{ "contractName": "Relay", "abi": [ { "constant": true, "inputs": [], "name": "HEIGHT_INTERVAL", "outputs": [ { "name": "", "type": "uint32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "inputs": [ { "name": "_genesisHeader", "type": "bytes" }, { "name": "_height", "type": "uint256" }, { "name": "_periodStart", "type": "bytes32" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_first", "type": "bytes32" }, { "indexed": true, "name": "_last", "type": "bytes32" } ], "name": "Extension", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_from", "type": "bytes32" }, { "indexed": true, "name": "_to", "type": "bytes32" }, { "indexed": true, "name": "_gcd", "type": "bytes32" } ], "name": "Reorg", "type": "event" }, { "constant": false, "inputs": [ { "name": "_anchor", "type": "bytes" }, { "name": "_headers", "type": "bytes" } ], "name": "addHeaders", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_oldPeriodStartHeader", "type": "bytes" }, { "name": "_oldPeriodEndHeader", "type": "bytes" }, { "name": "_headers", "type": "bytes" } ], "name": "addHeadersWithRetarget", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "_digest", "type": "bytes32" } ], "name": "findHeight", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_digest", "type": "bytes32" }, { "name": "_offset", "type": "uint256" } ], "name": "findAncestor", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_ancestor", "type": "bytes32" }, { "name": "_descendant", "type": "bytes32" }, { "name": "_limit", "type": "uint256" } ], "name": "isAncestor", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_ancestor", "type": "bytes32" }, { "name": "_currentBest", "type": "bytes" }, { "name": "_newBest", "type": "bytes" }, { "name": "_limit", "type": "uint256" } ], "name": "markNewHeaviest", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "_ancestor", "type": "bytes32" }, { "name": "_left", "type": "bytes32" }, { "name": "_right", "type": "bytes32" }, { "name": "_limit", "type": "uint256" } ], "name": "isMostRecentAncestor", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_ancestor", "type": "bytes32" }, { "name": "_left", "type": "bytes" }, { "name": "_right", "type": "bytes" } ], "name": "heaviestFromAncestor", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getCurrentEpochDifficulty", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getPrevEpochDifficulty", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getRelayGenesis", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getBestKnownDigest", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getLastReorgCommonAncestor", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.10+commit.5a6ea5b1\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":true,\"inputs\":[],\"name\":\"getCurrentEpochDifficulty\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getBestKnownDigest\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getPrevEpochDifficulty\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_ancestor\",\"type\":\"bytes32\"},{\"name\":\"_left\",\"type\":\"bytes32\"},{\"name\":\"_right\",\"type\":\"bytes32\"},{\"name\":\"_limit\",\"type\":\"uint256\"}],\"name\":\"isMostRecentAncestor\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_digest\",\"type\":\"bytes32\"},{\"name\":\"_offset\",\"type\":\"uint256\"}],\"name\":\"findAncestor\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_digest\",\"type\":\"bytes32\"}],\"name\":\"findHeight\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_anchor\",\"type\":\"bytes\"},{\"name\":\"_headers\",\"type\":\"bytes\"}],\"name\":\"addHeaders\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"HEIGHT_INTERVAL\",\"outputs\":[{\"name\":\"\",\"type\":\"uint32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_ancestor\",\"type\":\"bytes32\"},{\"name\":\"_currentBest\",\"type\":\"bytes\"},{\"name\":\"_newBest\",\"type\":\"bytes\"},{\"name\":\"_limit\",\"type\":\"uint256\"}],\"name\":\"markNewHeaviest\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_oldPeriodStartHeader\",\"type\":\"bytes\"},{\"name\":\"_oldPeriodEndHeader\",\"type\":\"bytes\"},{\"name\":\"_headers\",\"type\":\"bytes\"}],\"name\":\"addHeadersWithRetarget\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_ancestor\",\"type\":\"bytes32\"},{\"name\":\"_left\",\"type\":\"bytes\"},{\"name\":\"_right\",\"type\":\"bytes\"}],\"name\":\"heaviestFromAncestor\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_ancestor\",\"type\":\"bytes32\"},{\"name\":\"_descendant\",\"type\":\"bytes32\"},{\"name\":\"_limit\",\"type\":\"uint256\"}],\"name\":\"isAncestor\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getLastReorgCommonAncestor\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getRelayGenesis\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"name\":\"_genesisHeader\",\"type\":\"bytes\"},{\"name\":\"_height\",\"type\":\"uint256\"},{\"name\":\"_periodStart\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"_first\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"_last\",\"type\":\"bytes32\"}],\"name\":\"Extension\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"_from\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"_to\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"_gcd\",\"type\":\"bytes32\"}],\"name\":\"Reorg\",\"type\":\"event\"}],\"devdoc\":{\"methods\":{\"addHeaders(bytes,bytes)\":{\"details\":\"We check integrity and consistency of the header chain\",\"params\":{\"_anchor\":\"The header immediately preceeding the new chain\",\"_headers\":\"A tightly-packed list of 80-byte Bitcoin headers\"},\"return\":\"True if successfully written, error otherwise\"},\"addHeadersWithRetarget(bytes,bytes,bytes)\":{\"details\":\"Checks the retarget, the heights, and the linkage\",\"params\":{\"_headers\":\"A tightly-packed list of 80-byte Bitcoin headers\",\"_oldPeriodEndHeader\":\"The last header in the difficulty period being closed\",\"_oldPeriodStartHeader\":\"The first header in the difficulty period being closed\"},\"return\":\"True if successfully written, error otherwise\"},\"constructor\":{\"details\":\"We don't check this AT ALL really. Don't use relays with bad genesis\",\"params\":{\"_genesisHeader\":\"The starting header\",\"_height\":\"The starting height\",\"_periodStart\":\"The hash of the first header in the genesis epoch\"}},\"findAncestor(bytes32,uint256)\":{\"details\":\"Will fail if the header is unknown\",\"params\":{\"_digest\":\"The header digest to search for\"},\"return\":\"The height of the header, or error if unknown\"},\"findHeight(bytes32)\":{\"details\":\"Will fail if the header is unknown\",\"params\":{\"_digest\":\"The header digest to search for\"},\"return\":\"The height of the header, or error if unknown\"},\"getBestKnownDigest()\":{\"details\":\"This updated only by calling markNewHeaviest\",\"return\":\"The hash of the best marked chain tip\"},\"getCurrentEpochDifficulty()\":{\"details\":\"This is updated when a new heavist header has a new diff\",\"return\":\"The difficulty of the bestKnownDigest\"},\"getLastReorgCommonAncestor()\":{\"details\":\"This is updated only by calling markNewHeaviest\",\"return\":\"The hash of the shared ancestor of the most recent fork\"},\"getPrevEpochDifficulty()\":{\"details\":\"This is updated when a difficulty change is accepted\",\"return\":\"The difficulty of the previous epoch\"},\"getRelayGenesis()\":{\"details\":\"This is an initialization parameter\",\"return\":\"The hash of the first block of the relay\"},\"heaviestFromAncestor(bytes32,bytes,bytes)\":{\"details\":\"Does not support reorgs above 2017 blocks (:\",\"params\":{\"_ancestor\":\"The prospective shared ancestor\",\"_left\":\"A chain tip\",\"_right\":\"A chain tip\"},\"return\":\"true if it is the most recent common ancestor within _limit, false otherwise\"},\"isAncestor(bytes32,bytes32,uint256)\":{\"details\":\"Limit the amount of lookups (and thus gas usage) with _limit\",\"params\":{\"_ancestor\":\"The prospective ancestor\",\"_descendant\":\"The descendant to check\",\"_limit\":\"The maximum number of blocks to check\"},\"return\":\"true if ancestor is at most limit blocks lower than descendant, otherwise false\"},\"isMostRecentAncestor(bytes32,bytes32,bytes32,uint256)\":{\"details\":\"Limit the amount of lookups (and thus gas usage) with _limit\",\"params\":{\"_ancestor\":\"The prospective shared ancestor\",\"_left\":\"A chain tip\",\"_limit\":\"The maximum number of blocks to check\",\"_right\":\"A chain tip\"},\"return\":\"true if it is the most recent common ancestor within _limit, false otherwise\"},\"markNewHeaviest(bytes32,bytes,bytes,uint256)\":{\"details\":\"We don't check this AT ALL really. Don't use relays with bad genesis\",\"params\":{\"_ancestor\":\"The digest of the most recent common ancestor\",\"_currentBest\":\"The 80-byte header referenced by bestKnownDigest\",\"_limit\":\"Limit the amount of traversal of the chain\",\"_newBest\":\"The 80-byte header to mark as the new best\"},\"return\":\"True if successfully updates bestKnownDigest, error otherwise\"}}},\"userdoc\":{\"methods\":{\"addHeaders(bytes,bytes)\":{\"notice\":\"Adds headers to storage after validating\"},\"addHeadersWithRetarget(bytes,bytes,bytes)\":{\"notice\":\"Adds headers to storage, performs additional validation of retarget\"},\"constructor\":\"Gives a starting point for the relay\",\"findAncestor(bytes32,uint256)\":{\"notice\":\"Finds an ancestor for a block by its digest\"},\"findHeight(bytes32)\":{\"notice\":\"Finds the height of a header by its digest\"},\"getBestKnownDigest()\":{\"notice\":\"Getter for bestKnownDigest\"},\"getCurrentEpochDifficulty()\":{\"notice\":\"Getter for currentEpochDiff\"},\"getLastReorgCommonAncestor()\":{\"notice\":\"Getter for relayGenesis\"},\"getPrevEpochDifficulty()\":{\"notice\":\"Getter for prevEpochDiff\"},\"getRelayGenesis()\":{\"notice\":\"Getter for relayGenesis\"},\"heaviestFromAncestor(bytes32,bytes,bytes)\":{\"notice\":\"Decides which header is heaviest from the ancestor\"},\"isAncestor(bytes32,bytes32,uint256)\":{\"notice\":\"Checks if a digest is an ancestor of the current one\"},\"isMostRecentAncestor(bytes32,bytes32,bytes32,uint256)\":{\"notice\":\"Checks if a digest is an ancestor of the current one\"},\"markNewHeaviest(bytes32,bytes,bytes,uint256)\":{\"notice\":\"Gives a starting point for the relay\"}}}},\"settings\":{\"compilationTarget\":{\"/home/james/devel/relays/solidity/contracts/Relay.sol\":\"Relay\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/home/james/devel/relays/solidity/contracts/Relay.sol\":{\"keccak256\":\"0x91f24dd17a8c00da7ab462b64fd6820df7060156d4e2b6d79bf5b4538f265c33\",\"urls\":[\"bzzr://2e2736b7a8b6275451afb9d606392c14be20d51224c2265a21efef6c4e4bb338\",\"dweb:/ipfs/QmZZQCPHUdCyCZfRhpMQBRjKR8k7VDAwNaRo9BRYBWbDm2\"]},\"@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol\":{\"keccak256\":\"0xc63829e9d674bb7bb98b264aff17add28db3c19d3ee0ef49531663491af8b087\",\"urls\":[\"bzzr://9a76af9995e01cb82228d6827801929b4697eb83fc60b44faa00d5e62c69ee2d\",\"dweb:/ipfs/QmYRRfdW9qyerUaEyHSEi7LY7WymkKUQQ61YQdxVorGdNW\"]},\"@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol\":{\"keccak256\":\"0x16296b4a97cdac10bb9cd4666d29310fe25897b7644dc04ad053ae09d4aeea9c\",\"urls\":[\"bzzr://27b097b56c0dc070a4e80572e01ffc28d26d83490f56fe0947a4d62ab09e1c48\",\"dweb:/ipfs/QmXwiQCVL8MS3R2NDWwTozngTjrD3SmWmZ6fbNGgQiwdDd\"]},\"@summa-tx/bitcoin-spv-sol/contracts/SafeMath.sol\":{\"keccak256\":\"0x22d34c04c68c2a77ee83e2ef3756f6e6bad6ad675560d777e612315d7eb83935\",\"urls\":[\"bzzr://a3312aa9977669832679852788efb21430fa70e5779243861ac6400fdc72f3de\",\"dweb:/ipfs/QmWADdVTCSyvtgb76AxFFkAr9h9jbY57Mj5X6xiEqCqmMu\"]},\"@summa-tx/bitcoin-spv-sol/contracts/ValidateSPV.sol\":{\"keccak256\":\"0x1b26b6ec30dcf0adb9cd7a8035a6cf0a565e8e12f0adf9f0ccda1f6b78e453c1\",\"urls\":[\"bzzr://ac9acd02674dcf17e3d6b58322efbfb42111dac4332cd9ee31ba9c7b8aa9fb47\",\"dweb:/ipfs/QmcwStYYD1NMVRzwcRP4v6eCscbMLdpjp45itWnfBaVnkf\"]}},\"version\":1}", "bytecode": "0x60806040523480156200001157600080fd5b506040516200205a3803806200205a833981810160405260608110156200003757600080fd5b8101908080516401000000008111156200005057600080fd5b820160208101848111156200006457600080fd5b81516401000000008111828201871017156200007f57600080fd5b5050602082015160409092015181519194509192506050146200010357604080517f08c379a000000000000000000000000000000000000000000000000000000000815260206004820152600f60248201527f53746f70206265696e672064756d620000000000000000000000000000000000604482015290519081900360640190fd5b60006200011b84620001f260201b6200127e1760201c565b905062ffffff8216156200017b576040517f08c379a000000000000000000000000000000000000000000000000000000000815260040180806020018281038252603d8152602001806200201d603d913960400191505060405180910390fd5b600081815560018290556002829055818152600460205260409020839055620001b76107e08406846200035d60201b620017061790919060201c565b6004600084815260200190815260200160002081905550620001e484620003d560201b620016231760201c565b600555506200067692505050565b600062000355600280846040518082805190602001908083835b602083106200022d5780518252601f1990920191602091820191016200020c565b51815160209384036101000a60001901801990921691161790526040519190930194509192505080830381855afa1580156200026d573d6000803e3d6000fd5b5050506040513d60208110156200028357600080fd5b50516040805160208181019390935281518082038401815290820191829052805190928291908401908083835b60208310620002d15780518252601f199092019160209182019101620002b0565b51815160209384036101000a60001901801990921691161790526040519190930194509192505080830381855afa15801562000311573d6000803e3d6000fd5b5050506040513d60208110156200032757600080fd5b5051604080516020818101939093528151808203840181529082019091529062001763620003fe821b17901c565b90505b919050565b600082821115620003cf57604080517f08c379a000000000000000000000000000000000000000000000000000000000815260206004820152601d60248201527f556e646572666c6f7720647572696e67207375627472616374696f6e2e000000604482015290519081900360640190fd5b50900390565b600062000355620003ef836001600160e01b036200041e16565b6001600160e01b036200049e16565b805160009082906200041557506000905062000358565b50506020015190565b60006060620004406048600385620004d660201b620013cc179092919060201c565b9050600083604b815181106200045257fe5b016020015160f81c905060006200048562000476846001600160e01b036200059016565b6001600160e01b036200062216565b6002199290920160ff166101000a909102949350505050565b600062000355827bffff00000000000000000000000000000000000000000000000000006200066260201b620017c21790919060201c565b6060818301845110156200054b57604080517f08c379a000000000000000000000000000000000000000000000000000000000815260206004820152601360248201527f536c696365206f7574206f6620626f756e647300000000000000000000000000604482015290519081900360640190fd5b604051905081604082010160405281815282840181038360208601018381015b8082101562000586578151838301526020820191506200056b565b5050509392505050565b60608082516040519080825280601f01601f191660200182016040528015620005c0576020820181803883390190505b50905060005b83518110156200061b57838181518110620005dd57fe5b602001015160f81c60f81b826001838751030381518110620005fb57fe5b60200101906001600160f81b031916908160001a905350600101620005c6565b5092915050565b600080805b83518110156200061b578060010184510360080260020a8482815181106200064b57fe5b016020015160f81c02919091019060010162000627565b60008183816200066e57fe5b049392505050565b61199780620006866000396000f3fe608060405234801561001057600080fd5b50600436106100ea5760003560e01c806370d53c181161008c578063b25b9b0011610066578063b25b9b001461044e578063b985621a14610513578063c58242cd1461053c578063e3d8d8d814610544576100ea565b806370d53c181461025a57806374c3a3a91461027b5780637fa637fc14610340576100ea565b80632e4f161a116100c85780632e4f161a1461011957806330017b3b1461015c57806360b5c3901461017f57806365da41b91461019c576100ea565b8063113764be146100ef5780631910d973146101095780632b97be2414610111575b600080fd5b6100f761054c565b60408051918252519081900360200190f35b6100f7610552565b6100f7610558565b6101486004803603608081101561012f57600080fd5b508035906020810135906040810135906060013561055e565b604080519115158252519081900360200190f35b6100f76004803603604081101561017257600080fd5b5080359060200135610577565b6100f76004803603602081101561019557600080fd5b503561058c565b610148600480360360408110156101b257600080fd5b810190602081018135600160201b8111156101cc57600080fd5b8201836020820111156101de57600080fd5b803590602001918460018302840111600160201b831117156101ff57600080fd5b919390929091602081019035600160201b81111561021c57600080fd5b82018360208201111561022e57600080fd5b803590602001918460018302840111600160201b8311171561024f57600080fd5b50909250905061059f565b610262610614565b6040805163ffffffff9092168252519081900360200190f35b6101486004803603608081101561029157600080fd5b81359190810190604081016020820135600160201b8111156102b257600080fd5b8201836020820111156102c457600080fd5b803590602001918460018302840111600160201b831117156102e557600080fd5b919390929091602081019035600160201b81111561030257600080fd5b82018360208201111561031457600080fd5b803590602001918460018302840111600160201b8311171561033557600080fd5b919350915035610619565b6101486004803603606081101561035657600080fd5b810190602081018135600160201b81111561037057600080fd5b82018360208201111561038257600080fd5b803590602001918460018302840111600160201b831117156103a357600080fd5b919390929091602081019035600160201b8111156103c057600080fd5b8201836020820111156103d257600080fd5b803590602001918460018302840111600160201b831117156103f357600080fd5b919390929091602081019035600160201b81111561041057600080fd5b82018360208201111561042257600080fd5b803590602001918460018302840111600160201b8311171561044357600080fd5b50909250905061069c565b6100f76004803603606081101561046457600080fd5b81359190810190604081016020820135600160201b81111561048557600080fd5b82018360208201111561049757600080fd5b803590602001918460018302840111600160201b831117156104b857600080fd5b919390929091602081019035600160201b8111156104d557600080fd5b8201836020820111156104e757600080fd5b803590602001918460018302840111600160201b8311171561050857600080fd5b509092509050610745565b6101486004803603606081101561052957600080fd5b50803590602081013590604001356107c5565b6100f76107dc565b6100f76107e2565b60055490565b60015490565b60065490565b600061056c858585856107e8565b90505b949350505050565b60006105838383610899565b90505b92915050565b600061059782610915565b90505b919050565b600061056c85858080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525050604080516020601f89018190048102820181019092528781529250879150869081908401838280828437600092018290525092506109c0915050565b600481565b60006106918787878080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525050604080516020601f8b018190048102820181019092528981529250899150889081908401838280828437600092019190915250889250610cb8915050565b979650505050505050565b600061069187878080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525050604080516020601f8b01819004810282018101909252898152925089915088908190840183828082843760009201919091525050604080516020601f8a018190048102820181019092528881529250889150879081908401838280828437600092019190915250610e7392505050565b60006107bb8686868080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525050604080516020601f8a01819004810282018101909252888152925088915087908190840183828082843760009201919091525061108692505050565b9695505050505050565b60006107d28484846111d1565b90505b9392505050565b60025490565b60005490565b600083851480156107f857508285145b156108055750600161056f565b8383818160005b868110156108605789831461082e576000838152600360205260409020549294505b898214610848576000828152600360205260409020549193505b61085981600163ffffffff61122616565b905061080c565b508284141561087657600094505050505061056f565b80821461088a57600094505050505061056f565b50600198975050505050505050565b600082815b838110156108cf5760009182526003602052604090912054906108c881600163ffffffff61122616565b905061089e565b5080610583576040805162461bcd60e51b815260206004820152601060248201526f2ab735b737bbb71030b731b2b9ba37b960811b604482015290519081900360640190fd5b60008082815b60058110156109825760008281526004602052604090205492508261095057600091825260036020526040909120549061096a565b610960838263ffffffff61122616565b935050505061059a565b61097b81600163ffffffff61122616565b905061091b565b506040805162461bcd60e51b815260206004820152600d60248201526c556e6b6e6f776e20626c6f636b60981b604482015290519081900360640190fd5b60008060606000806109d18861127e565b905060006109ef6109ea8983605063ffffffff6113cc16565b61145f565b905060006109fc83610915565b90508780610a11575081610a0f8b61145f565b145b610a4c5760405162461bcd60e51b81526004018080602001828103825260248152602001806118ef6024913960400191505060405180910390fd5b6050895181610a5757fe5b0615610a945760405162461bcd60e51b815260040180806020018281038252602b8152602001806117fc602b913960400191505060405180910390fd5b60005b60508a5181610aa257fe5b04811015610c7457610acd610abe82605063ffffffff6114b816565b8b90605063ffffffff6113cc16565b9550610ae2826001830163ffffffff61122616565b9650610aed8661127e565b600081815260036020526040902054909550610bb25782610b34610b2f8760405160200180828152602001915050604051602081830303815290604052611528565b6115b5565b1115610b87576040805162461bcd60e51b815260206004820152601b60248201527f48656164657220776f726b20697320696e73756666696369656e740000000000604482015290519081900360640190fd5b600085815260036020526040902084905560048706610bb25760008581526004602052604090208790555b82610bbc8761145f565b14610c0e576040805162461bcd60e51b815260206004820152601b60248201527f546172676574206368616e67656420756e65787065637465646c790000000000604482015290519081900360640190fd5b610c1e868563ffffffff6115f216565b610c595760405162461bcd60e51b81526004018080602001828103825260268152602001806117d66026913960400191505060405180910390fd5b849350610c6d81600163ffffffff61122616565b9050610a97565b5083610c7f8b61127e565b6040517ff90e4f1d9cd0dd55e339411cbc9b152482307c3a23ed64715e4a2858f641a3f590600090a35060019998505050505050505050565b600080610cc48461127e565b90506000610cd18661127e565b90506001548114610d29576040805162461bcd60e51b815260206004820181905260248201527f50617373656420696e2062657374206973206e6f742062657374206b6e6f776e604482015290519081900360640190fd5b600082815260036020526040902054610d7f576040805162461bcd60e51b81526020600482015260136024820152722732bb903132b9ba1034b9903ab735b737bbb760691b604482015290519081900360640190fd5b610d8d8760015484876107e8565b610dc85760405162461bcd60e51b815260040180806020018281038252602981526020018061193a6029913960400191505060405180910390fd5b81610dd4888888611086565b14610e105760405162461bcd60e51b815260040180806020018281038252603381526020018061188c6033913960400191505060405180910390fd5b600182905560028790556000610e2586611623565b90506005548114610e365760058190555b8783837f26300f292d9603532a1503495d83156db6cb60433e0802cd3b8763b57f1d14d260405160405180910390a4506001979650505050505050565b600080610e87610e828661127e565b610915565b90506000610e97610e828661127e565b90506107e081066107df14610edd5760405162461bcd60e51b815260040180806020018281038252603d81526020018061184f603d913960400191505060405180910390fd5b610eef826107df63ffffffff61122616565b8114610f2c5760405162461bcd60e51b81526004018080602001828103825260288152602001806118276028913960400191505060405180910390fd5b610f3585611623565b610f3e87611623565b14610f7a5760405162461bcd60e51b81526004018080602001828103825260278152602001806119136027913960400191505060405180910390fd5b6060610f8f856000605063ffffffff6113cc16565b90506000610f9c8261145f565b90506000610fcf610fac8a61145f565b610fb58b611636565b63ffffffff16610fc48b611636565b63ffffffff1661164c565b90508181831614611027576040805162461bcd60e51b815260206004820152601960248201527f496e76616c69642072657461726765742070726f766964656400000000000000604482015290519081900360640190fd5b60006110328a611623565b90508060065414158015611061575061105e6107e0611052600154610915565b9063ffffffff61170616565b85115b1561106c5760068190555b611078898960016109c0565b9a9950505050505050505050565b60008061109285610915565b905060006110a2610e828661127e565b905060006110b2610e828661127e565b90508282101580156110c45750828110155b6110ff5760405162461bcd60e51b81526004018080602001828103825260308152602001806118bf6030913960400191505060405180910390fd5b600061111b6107e08506611052866107e063ffffffff61122616565b905080831081831081158261112d5750805b156111485761113b8961127e565b96505050505050506107d5565b818015611153575080155b156111615761113b8861127e565b81801561116b5750805b1561118f5783851015611186576111818861127e565b61113b565b61113b8961127e565b6111ad61119b89611623565b6107e0865b069063ffffffff6114b816565b6111c26111b98b611623565b6107e0886111a0565b10156111865761113b8861127e565b600082815b8381101561121a57858214156111f1576001925050506107d5565b600091825260036020526040909120549061121381600163ffffffff61122616565b90506111d6565b50600095945050505050565b81810182811015610586576040805162461bcd60e51b815260206004820152601960248201527f4f766572666c6f7720647572696e67206164646974696f6e2e00000000000000604482015290519081900360640190fd5b6000610597600280846040518082805190602001908083835b602083106112b65780518252601f199092019160209182019101611297565b51815160209384036101000a60001901801990921691161790526040519190930194509192505080830381855afa1580156112f5573d6000803e3d6000fd5b5050506040513d602081101561130a57600080fd5b50516040805160208181019390935281518082038401815290820191829052805190928291908401908083835b602083106113565780518252601f199092019160209182019101611337565b51815160209384036101000a60001901801990921691161790526040519190930194509192505080830381855afa158015611395573d6000803e3d6000fd5b5050506040513d60208110156113aa57600080fd5b5051604080516020818101939093528151808203909301835281019052611763565b60608183018451101561141c576040805162461bcd60e51b8152602060048201526013602482015272536c696365206f7574206f6620626f756e647360681b604482015290519081900360640190fd5b604051905081604082010160405281815282840181038360208601018381015b808210156114555781518383015260208201915061143c565b5050509392505050565b60006060611476836048600363ffffffff6113cc16565b9050600083604b8151811061148757fe5b016020015160f81c9050600061149f610b2f84611528565b6002199290920160ff166101000a909102949350505050565b6000826114c757506000610586565b50818102818382816114d557fe5b0414610586576040805162461bcd60e51b815260206004820152601f60248201527f4f766572666c6f7720647572696e67206d756c7469706c69636174696f6e2e00604482015290519081900360640190fd5b60608082516040519080825280601f01601f191660200182016040528015611557576020820181803883390190505b50905060005b83518110156115ae5783818151811061157257fe5b602001015160f81c60f81b82600183875103038151811061158f57fe5b60200101906001600160f81b031916908160001a90535060010161155d565b5092915050565b600080805b83518110156115ae578060010184510360080260020a8482815181106115dc57fe5b016020015160f81c0291909101906001016115ba565b60008061160661160185611781565b611763565b9050828114611619576000915050610586565b5060019392505050565b60006105976116318361145f565b611796565b6000610597610b2f611647846117ad565b611528565b60008061165f838563ffffffff61170616565b905061167562127500600463ffffffff6117c216565b8110156116935761169062127500600463ffffffff6117c216565b90505b6116a762127500600463ffffffff6114b816565b8111156116c5576116c262127500600463ffffffff6114b816565b90505b60006116ea826116de886201000063ffffffff6117c216565b9063ffffffff6114b816565b90506107bb620100006116de836212750063ffffffff6117c216565b60008282111561175d576040805162461bcd60e51b815260206004820152601d60248201527f556e646572666c6f7720647572696e67207375627472616374696f6e2e000000604482015290519081900360640190fd5b50900390565b8051600090829061177857506000905061059a565b50506020015190565b6060610597826004602063ffffffff6113cc16565b600061059761ffff60d01b8363ffffffff6117c216565b6060610597826044600463ffffffff6113cc16565b60008183816117cd57fe5b04939250505056fe4865616465727320646f206e6f7420666f726d206120636f6e73697374656e7420636861696e486561646572206172726179206c656e677468206d75737420626520646976697369626c652062792038304d7573742070726f766964652065786163746c79203120646966666963756c747920706572696f644d7573742070726f7669646520746865206c61737420686561646572206f662074686520636c6f73696e6720646966666963756c747920706572696f644e65772062657374206861736820646f6573206e6f742068617665206d6f726520776f726b207468616e2070726576696f7573412064657363656e64616e74206865696768742069732062656c6f772074686520616e636573746f7220686569676874556e6578706563746564207265746172676574206f6e2065787465726e616c2063616c6c506572696f642068656164657220646966666963756c7469657320646f206e6f74206d61746368416e636573746f72206d75737420626520686561766965737420636f6d6d6f6e20616e636573746f72a265627a7a723058205f089265a488047a1b1e7040391bfe58c8b76be351ea3dede18a0c0a9acb946264736f6c634300050a0032506572696f64207374617274206861736820646f6573206e6f74206861766520776f726b2e2048696e743a2077726f6e672062797465206f726465723f", "deployedBytecode": "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", "sourceMap": "2004:21184:3:-;;;2996:740;8:9:-1;5:2;;;30:1;27;20:12;5:2;2996:740:3;;;;;;;;;;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;2996:740:3;;;;;;19:11:-1;14:3;11:20;8:2;;;44:1;41;34:12;8:2;62:21;;123:4;114:14;;138:31;;;135:2;;;182:1;179;172:12;135:2;213:10;;261:11;244:29;;285:43;;;282:58;-1:-1;233:115;230:2;;;361:1;358;351:12;230:2;-1:-1;;2996:740:3;;;;;;;;;3101:21;;2996:740;;-1:-1:-1;2996:740:3;;-1:-1:-1;3126:2:3;3101:27;3093:55;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3158:22;3183:24;:14;:22;;;;;:24;;:::i;:::-;3158:49;-1:-1:-1;3262:66:3;3239:90;;:104;3218:203;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3432:12;:29;;;3471:15;:32;;;3513:23;:40;;;3563:27;;;:11;:27;;;;;:37;;;3638:27;3660:4;3593:7;3650:14;3638:7;:11;;;;;;:27;;;;:::i;:::-;3610:11;:25;3622:12;3610:25;;;;;;;;;;;:55;;;;3695:34;:14;:32;;;;;:34;;:::i;:::-;3676:16;:53;-1:-1:-1;2004:21184:3;;-1:-1:-1;;;2004:21184:3;4750:156:5;4807:7;4833:66;4850:36;4874:10;4881:2;4874:10;;;;;;;;;;;;;36:153:-1;66:2;61:3;58:11;36:153;;176:10;;164:23;;-1:-1;;139:12;;;;98:2;89:12;;;;114;36:153;;;299:10;344;;263:2;259:12;;;254:3;250:22;-1:-1;;246:30;311:9;;295:26;;;340:21;;377:20;365:33;;4874:10:5;;;;;;;-1:-1:-1;263:2;;-1:-1;;4874:10:5;;;;;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;4874:10:5;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;4874:10:5;4857:28;;;4874:10;4857:28;;;;;;;;;26:21:-1;;;22:32;;6:49;;4857:28:5;;;;;;;4850:36;;4857:28;;;;4850:36;;;;;4857:28;4850:36;36:153:-1;66:2;61:3;58:11;36:153;;176:10;;164:23;;-1:-1;;139:12;;;;98:2;89:12;;;;114;36:153;;;299:10;344;;263:2;259:12;;;254:3;250:22;-1:-1;;246:30;311:9;;295:26;;;340:21;;377:20;365:33;;4850:36:5;;;;;;;-1:-1:-1;263:2;;-1:-1;;4850:36:5;;;;;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;4850:36:5;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;4850:36:5;4833:54;;;4850:36;4833:54;;;;;;;;;26:21:-1;;;22:32;;6:49;;4833:54:5;;;;;;;:64;;;;;:66;;:::i;:::-;4826:73;;4750:156;;;;:::o;2288:160:7:-;2348:7;2381:2;2375;:8;;2367:50;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;2434:7:7;;;2288:160::o;23489:148:5:-;23561:7;23587:43;23607:22;23621:7;-1:-1:-1;;;;;23607:13:5;:22;:::i;:::-;-1:-1:-1;;;;;23587:19:5;:43;:::i;15955:303:6:-;16108:26;;16019:14;;16086:7;;16104:72;;-1:-1:-1;16162:3:6;;-1:-1:-1;16155:10:6;;16104:72;-1:-1:-1;;16238:2:6;16225:16;16219:23;;16195:57::o;20858:316:5:-;20926:7;20945:15;20963:20;20977:2;20981:1;20963:7;:13;;;;;;:20;;;;;:::i;:::-;20945:38;;20993:8;21010:7;21018:2;21010:11;;;;;;;;;;;;;;;-1:-1:-1;21032:17:5;21052:34;21064:21;21082:2;-1:-1:-1;;;;;21064:17:5;:21;:::i;:::-;-1:-1:-1;;;;;21052:11:5;:34;:::i;:::-;-1:-1:-1;;21113:6:5;;;;21096:23;;21150:3;:16;21137:30;;;;20858:316;-1:-1:-1;;;;20858:316:5:o;21554:178::-;21623:7;21700:25;21717:7;379:58;21700:16;;;;;;:25;;;;:::i;10345:819:6:-;10432:16;10495:7;10486:6;:16;10468:6;:13;:35;;10460:67;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;10664:4;10658:11;10651:18;;10713:7;10708:2;10703:3;10699:12;10695:26;10689:4;10682:40;10747:7;10742:3;10735:20;10874:6;10866;10862:19;10857:3;10853:29;10950:6;10945:2;10937:6;10933:15;10929:28;10994:7;10989:3;10985:17;10896:252;11025:3;11020;11017:12;10896:252;;;11129:3;11123:10;11116:4;11111:3;11107:14;11100:34;11064:2;11059:3;11055:12;11048:19;;10896:252;;;10900:116;;10547:611;;;;;;:::o;1595:278:5:-;1662:12;1686:22;1721:2;:9;1711:20;;;;;;;;;;;;;;;;;;;;;;;;;21:6:-1;;104:10;1711:20:5;87:34:-1;135:17;;-1:-1;1711:20:5;-1:-1:-1;1686:45:5;-1:-1:-1;1747:6:5;1742:98;1763:2;:9;1759:1;:13;1742:98;;;1824:2;1827:1;1824:5;;;;;;;;;;;;;;;;1793:9;1819:1;1815;1803:2;:9;:13;:17;1793:28;;;;;;;;;;;:36;-1:-1:-1;;;;;1793:36:5;;;;;;;;-1:-1:-1;1774:3:5;;1742:98;;;-1:-1:-1;1857:9:5;1595:278;-1:-1:-1;;1595:278:5:o;3429:268::-;3490:7;;;3535:131;3556:2;:9;3552:1;:13;3535:131;;;3646:1;3650;3646:5;3633:2;:9;:19;3628:1;:25;3622:1;:32;3612:2;3615:1;3612:5;;;;;;;;;;;;;;3606:49;3596:59;;;;;3567:3;;3535:131;;1865:301:7;1925:7;2157:2;2152;:7;;;;;;;1865:301;-1:-1:-1;;;1865:301:7:o;2004:21184:3:-;;;;;;;", "deployedSourceMap": "2004:21184:3:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;2004:21184:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;21954:107;;;:::i;:::-;;;;;;;;;;;;;;;;22778:99;;;:::i;22241:101::-;;;:::i;18722:242::-;;;;;;13:3:-1;8;5:12;2:2;;;30:1;27;20:12;2:2;-1:-1;18722:242:3;;;;;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;12362:143;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;12362:143:3;;;;;;;:::i;11398:113::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;11398:113:3;;:::i;6901:154::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;6901:154:3;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;6901:154:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;6901:154:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;6901:154:3;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;6901:154:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;6901:154:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;-1:-1;6901:154:3;;-1:-1:-1;6901:154:3;-1:-1:-1;6901:154:3;:::i;2272:42::-;;;:::i;:::-;;;;;;;;;;;;;;;;;;;16407:259;;;;;;13:3:-1;8;5:12;2:2;;;30:1;27;20:12;2:2;16407:259:3;;;;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;16407:259:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;16407:259:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;16407:259:3;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;16407:259:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;16407:259:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;16407:259:3;;-1:-1:-1;16407:259:3;-1:-1:-1;16407:259:3;;:::i;7611:286::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;7611:286:3;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;7611:286:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;7611:286:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;7611:286:3;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;7611:286:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;7611:286:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;7611:286:3;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;7611:286:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;7611:286:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;-1:-1;7611:286:3;;-1:-1:-1;7611:286:3;-1:-1:-1;7611:286:3;:::i;21538:227::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;21538:227:3;;;;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;21538:227:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;21538:227:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;21538:227:3;;;;;;;;;;;-1:-1:-1;;;5:28;;2:2;;;46:1;43;36:12;2:2;21538:227:3;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;21538:227:3;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;-1:-1;;;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;-1:-1;21538:227:3;;-1:-1:-1;21538:227:3;-1:-1:-1;21538:227:3;:::i;13853:172::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;13853:172:3;;;;;;;;;;;;:::i;23071:115::-;;;:::i;22509:93::-;;;:::i;21954:107::-;22038:16;;21954:107;:::o;22778:99::-;22855:15;;22778:99;:::o;22241:101::-;22322:13;;22241:101;:::o;18722:242::-;18879:4;18902:55;18924:9;18935:5;18942:6;18950;18902:21;:55::i;:::-;18895:62;;18722:242;;;;;;;:::o;12362:143::-;12441:7;12467:31;12481:7;12490;12467:13;:31::i;:::-;12460:38;;12362:143;;;;;:::o;11398:113::-;11458:7;11484:20;11496:7;11484:11;:20::i;:::-;11477:27;;11398:113;;;;:::o;6901:154::-;6988:4;7011:37;7023:7;;7011:37;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;30:3:-1;22:6;14;1:33;99:1;81:16;;74:27;;;;-1:-1;;7011:37:3;;;;137:4:-1;7011:37:3;;;;;;;;;;;;;;;;;;-1:-1:-1;7032:8:3;;-1:-1:-1;7032:8:3;;;;7011:37;;7032:8;;;;7011:37;1:33:-1;99:1;81:16;;74:27;;;-1:-1;99:1;-1:-1;7011:11:3;;-1:-1:-1;;7011:37:3:i;2272:42::-;2313:1;2272:42;:::o;16407:259::-;16577:4;16600:59;16617:9;16628:12;;16600:59;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;30:3:-1;22:6;14;1:33;99:1;81:16;;74:27;;;;-1:-1;;16600:59:3;;;;137:4:-1;16600:59:3;;;;;;;;;;;;;;;;;;-1:-1:-1;16642:8:3;;-1:-1:-1;16642:8:3;;;;16600:59;;16642:8;;;;16600:59;1:33:-1;99:1;81:16;;74:27;;;;-1:-1;16652:6:3;;-1:-1:-1;16600:16:3;;-1:-1:-1;;16600:59:3:i;:::-;16593:66;16407:259;-1:-1:-1;;;;;;;16407:259:3:o;7611:286::-;7790:4;7813:77;7837:21;;7813:77;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;30:3:-1;22:6;14;1:33;99:1;81:16;;74:27;;;;-1:-1;;7813:77:3;;;;137:4:-1;7813:77:3;;;;;;;;;;;;;;;;;;-1:-1:-1;7860:19:3;;-1:-1:-1;7860:19:3;;;;7813:77;;7860:19;;;;7813:77;1:33:-1;99:1;81:16;;74:27;;;;-1:-1;;7813:77:3;;;;137:4:-1;7813:77:3;;;;;;;;;;;;;;;;;;-1:-1:-1;7881:8:3;;-1:-1:-1;7881:8:3;;;;7813:77;;7881:8;;;;7813:77;1:33:-1;99:1;81:16;;74:27;;;;-1:-1;7813:23:3;;-1:-1:-1;;;7813:77:3:i;21538:227::-;21685:7;21711:47;21733:9;21744:5;;21711:47;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;30:3:-1;22:6;14;1:33;99:1;81:16;;74:27;;;;-1:-1;;21711:47:3;;;;137:4:-1;21711:47:3;;;;;;;;;;;;;;;;;;-1:-1:-1;21751:6:3;;-1:-1:-1;21751:6:3;;;;21711:47;;21751:6;;;;21711:47;1:33:-1;99:1;81:16;;74:27;;;;-1:-1;21711:21:3;;-1:-1:-1;;;21711:47:3:i;:::-;21704:54;21538:227;-1:-1:-1;;;;;;21538:227:3:o;13853:172::-;13952:4;13975:43;13987:9;13998:11;14011:6;13975:11;:43::i;:::-;13968:50;;13853:172;;;;;;:::o;23071:115::-;23156:23;;23071:115;:::o;22509:93::-;22557:7;22583:12;22509:93;:::o;17153:1082::-;17311:4;17375:5;17362:9;:18;:41;;;;;17397:6;17384:9;:19;17362:41;17358:83;;;-1:-1:-1;17426:4:3;17419:11;;17358:83;17474:5;17513:6;17474:5;17513:6;17451:20;17602:413;17625:6;17621:1;:10;17602:413;;;17678:9;17665;:22;17661:163;;17771:24;;;;:13;:24;;;;;;17722:9;;-1:-1:-1;17661:163:3;17855:9;17841:10;:23;17837:168;;17951:25;;;;:13;:25;;;;;;17900:10;;-1:-1:-1;17837:168:3;17637:8;:1;17643;17637:8;:5;:8;:::i;:::-;17633:12;;17602:413;;;;18044:13;18028:12;:29;18024:50;;;18067:5;18060:12;;;;;;;;18024:50;18149:10;18136:9;:23;18132:44;;18169:5;18162:12;;;;;;;;18132:44;-1:-1:-1;18224:4:3;;17153:1082;-1:-1:-1;;;;;;;;17153:1082:3:o;11770:333::-;11850:7;11888;11850;11905:106;11929:7;11925:1;:11;11905:106;;;11977:23;;;;:13;:23;;;;;;;;11942:8;:1;11948;11942:8;:5;:8;:::i;:::-;11938:12;;11905:106;;;-1:-1:-1;12028:22:3;12020:51;;;;;-1:-1:-1;;;12020:51:3;;;;;;;;;;;;-1:-1:-1;;;12020:51:3;;;;;;;;;;;;;;10683:457;10744:7;;10811;10744;10828:273;10852:19;10848:23;;10828:273;;;10911:21;;;;:11;:21;;;;;;;-1:-1:-1;10950:12:3;10946:145;;10993:23;;;;:13;:23;;;;;;;;10946:145;;;11062:14;:7;11074:1;11062:14;:11;:14;:::i;:::-;11055:21;;;;;;;10946:145;10877:8;:1;10883;10877:8;:5;:8;:::i;:::-;10873:12;;10828:273;;;-1:-1:-1;11110:23:3;;;-1:-1:-1;;;11110:23:3;;;;;;;;;;;;-1:-1:-1;;;11110:23:3;;;;;;;;;;;;;;4234:2282;4334:4;4350:15;4375:20;4405:22;4437:23;4463:17;:7;:15;:17::i;:::-;4437:43;-1:-1:-1;4491:15:3;4509:37;:21;:8;4491:15;4527:2;4509:21;:14;:21;:::i;:::-;:35;:37::i;:::-;4491:55;;4556:21;4580:28;4592:15;4580:11;:28::i;:::-;4556:52;;4669:9;:47;;;;4709:7;4682:23;:7;:21;:23::i;:::-;:34;4669:47;4648:121;;;;-1:-1:-1;;;4648:121:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;4805:2;4787:8;:15;:20;;;;;;:25;4779:81;;;;-1:-1:-1;;;4779:81:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;5115:9;5110:1294;5152:2;5134:8;:15;:20;;;;;;5130:1;:24;5110:1294;;;5194:29;5209:9;:1;5215:2;5209:9;:5;:9;:::i;:::-;5194:8;;5220:2;5194:29;:14;:29;:::i;:::-;5184:39;-1:-1:-1;5247:24:3;:13;5269:1;5265:5;;5247:24;:17;:24;:::i;:::-;5237:34;;5302:17;:7;:15;:17::i;:::-;5561:1;5520:29;;;:13;:29;;;;;;5285:34;;-1:-1:-1;5516:560:3;;5682:7;5612:66;:52;5629:14;5612:32;;;;;;;;;;;;;;;49:4:-1;39:7;30;26:21;22:32;13:7;6:49;5612:32:3;;;:50;:52::i;:::-;:64;:66::i;:::-;:77;;5583:158;;;;;-1:-1:-1;;;5583:158:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;5759:29;;;;:13;:29;;;;;:47;;;2313:1;5828:7;:25;5824:238;;6006:27;;;;:11;:27;;;;;:37;;;5824:238;6195:7;6168:23;:7;:21;:23::i;:::-;:34;6160:74;;;;;-1:-1:-1;;;6160:74:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;6256:47;:7;6287:15;6256:47;:30;:47;:::i;:::-;6248:98;;;;-1:-1:-1;;;6248:98:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6379:14;;-1:-1:-1;5160:8:3;:1;5166;5160:8;:5;:8;:::i;:::-;5156:12;;5110:1294;;;;6473:14;6442:17;:7;:15;:17::i;:::-;6419:69;;;;;;;-1:-1:-1;6505:4:3;;4234:2282;-1:-1:-1;;;;;;;;;4234:2282:3:o;14618:1196::-;14785:4;14801:22;14826:18;:8;:16;:18::i;:::-;14801:43;;14854:26;14883:22;:12;:20;:22::i;:::-;14854:51;;14945:15;;14923:18;:37;14915:82;;;;;-1:-1:-1;;;14915:82:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;15069:1;15028:29;;;:13;:29;;;;;;15007:100;;;;;-1:-1:-1;;;15007:100:3;;;;;;;;;;;;-1:-1:-1;;;15007:100:3;;;;;;;;;;;;;;;15138:73;15160:9;15171:15;;15188:14;15204:6;15138:21;:73::i;:::-;15117:152;;;;-1:-1:-1;;;15117:152:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;15360:14;15300:56;15322:9;15333:12;15347:8;15300:21;:56::i;:::-;:74;15279:163;;;;-1:-1:-1;;;15279:163:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;15453:15;:32;;;15495:23;:35;;;-1:-1:-1;15560:28:3;:8;:26;:28::i;:::-;15541:47;;15614:16;;15602:8;:28;15598:84;;15644:16;:27;;;15598:84;15776:9;15748:14;15716:18;15697:89;;;;;;;;;;-1:-1:-1;15803:4:3;;14618:1196;-1:-1:-1;;;;;;;14618:1196:3:o;8453:1993::-;8627:4;8697:20;8720:44;8732:31;:21;:29;:31::i;:::-;8720:11;:44::i;:::-;8697:67;;8774:18;8795:42;8807:29;:19;:27;:29::i;8795:42::-;8774:63;-1:-1:-1;8948:4:3;8774:63;8935:17;8956:4;8935:25;8914:124;;;;-1:-1:-1;;;8914:124:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;9083:22;:12;9100:4;9083:22;:16;:22;:::i;:::-;9069:10;:36;9048:114;;;;-1:-1:-1;;;9048:114:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;9238:39;:19;:37;:39::i;:::-;9193:41;:21;:39;:41::i;:::-;:84;9172:161;;;;-1:-1:-1;;;9172:161:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;9438:28;9469:21;:8;9484:1;9487:2;9469:21;:14;:21;:::i;:::-;9438:52;;9500:21;9524:31;:15;:29;:31::i;:::-;9500:55;;9565:23;9591:193;9631:37;:21;:35;:37::i;:::-;9682:40;:21;:38;:40::i;:::-;9591:193;;9736:38;:19;:36;:38::i;:::-;9591:193;;:26;:193::i;:::-;9565:219;;9852:13;9832:15;9816:13;:31;9815:50;9794:113;;;;;-1:-1:-1;;;9794:113:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;10117:16;10136:41;:21;:39;:41::i;:::-;10117:60;;10208:8;10191:13;;:25;;:80;;;;;10233:38;10266:4;10233:28;10245:15;;10233:11;:28::i;:::-;:32;:38;:32;:38;:::i;:::-;10220:10;:51;10191:80;10187:133;;;10285:13;:24;;;10187:133;10391:48;10403:19;10424:8;10434:4;10391:11;:48::i;:::-;10384:55;8453:1993;-1:-1:-1;;;;;;;;;;8453:1993:3:o;19367:1768::-;19511:7;19530:23;19556:22;19568:9;19556:11;:22::i;:::-;19530:48;;19588:19;19610:28;19622:15;:5;:13;:15::i;19610:28::-;19588:50;;19648:20;19671:29;19683:16;:6;:14;:16::i;19671:29::-;19648:52;;19747:15;19732:11;:30;;:65;;;;;19782:15;19766:12;:31;;19732:65;19711:151;;;;-1:-1:-1;;;19711:151:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;19970:30;20003:53;20051:4;20033:15;:22;20003:25;:15;20023:4;20003:25;:19;:25;:::i;:53::-;19970:86;-1:-1:-1;20087:36:3;;;20155:37;;;20532:14;;20087:36;20532:32;;;20550:14;20532:32;20528:63;;;20574:15;:5;:13;:15::i;:::-;20567:22;;;;;;;;;;20528:63;20604:13;:32;;;;;20622:14;20621:15;20604:32;20600:64;;;20646:16;:6;:14;:16::i;20600:64::-;20677:13;:31;;;;;20694:14;20677:31;20673:456;;;20746:12;20731:11;:27;;:64;;20779:16;:6;:14;:16::i;:::-;20731:64;;;20761:15;:5;:13;:15::i;20673:456::-;20947:53;20973:26;:6;:24;:26::i;:::-;20963:4;20948:12;:19;;;20947:53;:25;:53;:::i;:::-;20876:51;20901:25;:5;:23;:25::i;:::-;20891:4;20877:11;:18;;20876:51;20875:125;20871:248;;;21027:16;:6;:14;:16::i;12960:438::-;13060:4;13095:11;13060:4;13181:189;13205:6;13201:1;:10;13181:189;;;13257:9;13245:8;:21;13241:71;;;13293:4;13286:11;;;;;;13241:71;13336:23;;;;:13;:23;;;;;;;;13217:8;:1;13223;13217:8;:5;:8;:::i;:::-;13213:12;;13181:189;;;-1:-1:-1;13386:5:3;;12960:438;-1:-1:-1;;;;;12960:438:3:o;2520:172:7:-;2605:7;;;2630;;;;2622:45;;;;;-1:-1:-1;;;2622:45:7;;;;;;;;;;;;;;;;;;;;;;;;;;;4750:156:5;4807:7;4833:66;4850:36;4874:10;4881:2;4874:10;;;;;;;;;;;;;36:153:-1;66:2;61:3;58:11;36:153;;176:10;;164:23;;-1:-1;;139:12;;;;98:2;89:12;;;;114;36:153;;;299:10;344;;263:2;259:12;;;254:3;250:22;-1:-1;;246:30;311:9;;295:26;;;340:21;;377:20;365:33;;4874:10:5;;;;;;;-1:-1:-1;263:2;;-1:-1;;4874:10:5;;;;;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;4874:10:5;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;4874:10:5;4857:28;;;4874:10;4857:28;;;;;;;;;26:21:-1;;;22:32;;6:49;;4857:28:5;;;;;;;4850:36;;4857:28;;;;4850:36;;;;;4857:28;4850:36;36:153:-1;66:2;61:3;58:11;36:153;;176:10;;164:23;;-1:-1;;139:12;;;;98:2;89:12;;;;114;36:153;;;299:10;344;;263:2;259:12;;;254:3;250:22;-1:-1;;246:30;311:9;;295:26;;;340:21;;377:20;365:33;;4850:36:5;;;;;;;-1:-1:-1;263:2;;-1:-1;;4850:36:5;;;;;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;4850:36:5;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;4850:36:5;4833:54;;;4850:36;4833:54;;;;;;;;;26:21:-1;;;22:32;;;6:49;;4833:54:5;;;;:64;:66::i;10345:819:6:-;10432:16;10495:7;10486:6;:16;10468:6;:13;:35;;10460:67;;;;;-1:-1:-1;;;10460:67:6;;;;;;;;;;;;-1:-1:-1;;;10460:67:6;;;;;;;;;;;;;;;10664:4;10658:11;10651:18;;10713:7;10708:2;10703:3;10699:12;10695:26;10689:4;10682:40;10747:7;10742:3;10735:20;10874:6;10866;10862:19;10857:3;10853:29;10950:6;10945:2;10937:6;10933:15;10929:28;10994:7;10989:3;10985:17;10896:252;11025:3;11020;11017:12;10896:252;;;11129:3;11123:10;11116:4;11111:3;11107:14;11100:34;11064:2;11059:3;11055:12;11048:19;;10896:252;;;10900:116;;10547:611;;;;;;:::o;20858:316:5:-;20926:7;20945:15;20963:20;:7;20977:2;20981:1;20963:20;:13;:20;:::i;:::-;20945:38;;20993:8;21010:7;21018:2;21010:11;;;;;;;;;;;;;;;-1:-1:-1;21032:17:5;21052:34;21064:21;21082:2;21064:17;:21::i;21052:34::-;-1:-1:-1;;21113:6:5;;;;21096:23;;21150:3;:16;21137:30;;;;20858:316;-1:-1:-1;;;;20858:316:5:o;1317:456:7:-;1377:9;1619:7;1615:46;;-1:-1:-1;1649:1:7;1642:8;;1615:46;-1:-1:-1;1675:7:7;;;1680:2;1675;:7;:2;1700:6;;;;;:12;1692:56;;;;;-1:-1:-1;;;1692:56:7;;;;;;;;;;;;;;;;;;;;;;;;;;;1595:278:5;1662:12;1686:22;1721:2;:9;1711:20;;;;;;;;;;;;;;;;;;;;;;;;;21:6:-1;;104:10;1711:20:5;87:34:-1;135:17;;-1:-1;1711:20:5;-1:-1:-1;1686:45:5;-1:-1:-1;1747:6:5;1742:98;1763:2;:9;1759:1;:13;1742:98;;;1824:2;1827:1;1824:5;;;;;;;;;;;;;;;;1793:9;1819:1;1815;1803:2;:9;:13;:17;1793:28;;;;;;;;;;;:36;-1:-1:-1;;;;;1793:36:5;;;;;;;;-1:-1:-1;1774:3:5;;1742:98;;;-1:-1:-1;1857:9:5;1595:278;-1:-1:-1;;1595:278:5:o;3429:268::-;3490:7;;;3535:131;3556:2;:9;3552:1;:13;3535:131;;;3646:1;3650;3646:5;3633:2;:9;:19;3628:1;:25;3622:1;:32;3612:2;3615:1;3612:5;;;;;;;;;;;;;;3606:49;3596:59;;;;;3567:3;;3535:131;;9306:391:8;9410:4;9473:17;9493:40;:28;:7;:26;:28::i;:::-;:38;:40::i;:::-;9473:60;;9635:17;9622:9;:30;9618:51;;9662:5;9655:12;;;;;9618:51;-1:-1:-1;9686:4:8;;9306:391;-1:-1:-1;;;9306:391:8:o;23489:148:5:-;23561:7;23587:43;23607:22;23621:7;23607:13;:22::i;:::-;23587:19;:43::i;23095:170::-;23166:6;23198:59;23210:46;23228:27;23247:7;23228:18;:27::i;:::-;23210:17;:46::i;26130:920::-;26286:7;;26328:37;:16;26349:15;26328:37;:20;:37;:::i;:::-;26305:60;-1:-1:-1;26464:22:5;486:20;26484:1;26464:22;:19;:22;:::i;:::-;26449:12;:37;26445:105;;;26517:22;486:20;26537:1;26517:22;:19;:22;:::i;:::-;26502:37;;26445:105;26578:22;486:20;26598:1;26578:22;:19;:22;:::i;:::-;26563:12;:37;26559:105;;;26631:22;486:20;26651:1;26631:22;:19;:22;:::i;:::-;26616:37;;26559:105;26921:17;26941:44;26972:12;26941:26;:15;26961:5;26941:26;:19;:26;:::i;:::-;:30;:44;:30;:44;:::i;:::-;26921:64;-1:-1:-1;27002:41:5;27037:5;27002:30;26921:64;486:20;27002:30;:13;:30;:::i;2288:160:7:-;2348:7;2381:2;2375;:8;;2367:50;;;;;-1:-1:-1;;;2367:50:7;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;2434:7:7;;;2288:160::o;15955:303:6:-;16108:26;;16019:14;;16086:7;;16104:72;;-1:-1:-1;16162:3:6;;-1:-1:-1;16155:10:6;;16104:72;-1:-1:-1;;16238:2:6;16225:16;16219:23;;16195:57::o;21991:131:5:-;22064:12;22095:20;:7;22109:1;22112:2;22095:20;:13;:20;:::i;21554:178::-;21623:7;21700:25;-1:-1:-1;;;21717:7:5;21700:25;:16;:25;:::i;22757:131::-;22830:12;22861:20;:7;22875:2;22879:1;22861:20;:13;:20;:::i;1865:301:7:-;1925:7;2157:2;2152;:7;;;;;;;1865:301;-1:-1:-1;;;1865:301:7:o", "source": "pragma solidity ^0.5.10;\n\n/** @title Relay */\n/** @author Summa (https://summa.one) */\n\nimport {SafeMath} from \"@summa-tx/bitcoin-spv-sol/contracts/SafeMath.sol\";\nimport {BytesLib} from \"@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol\";\nimport {BTCUtils} from \"@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol\";\nimport {ValidateSPV} from \"@summa-tx/bitcoin-spv-sol/contracts/ValidateSPV.sol\";\n\ninterface IRelay {\n\n event Extension(bytes32 indexed _first, bytes32 indexed _last);\n event Reorg(bytes32 indexed _from, bytes32 indexed _to, bytes32 indexed _gcd);\n\n function isMostRecentAncestor(\n bytes32 _ancestor,\n bytes32 _left,\n bytes32 _right,\n uint256 _limit\n ) external view returns (bool);\n\n function getCurrentEpochDifficulty() external view returns (uint256);\n function getPrevEpochDifficulty() external view returns (uint256);\n function getRelayGenesis() external view returns (bytes32);\n function getBestKnownDigest() external view returns (bytes32);\n function getLastReorgCommonAncestor() external view returns (bytes32);\n\n function findHeight(bytes32 _digest) external view returns (uint256);\n\n function findAncestor(bytes32 _digest, uint256 _offset) external view returns (bytes32);\n\n function isAncestor(bytes32 _ancestor, bytes32 _descendant, uint256 _limit) external view returns (bool);\n\n function heaviestFromAncestor(\n bytes32 _ancestor,\n bytes calldata _left,\n bytes calldata _right\n ) external view returns (bytes32);\n\n function addHeaders(bytes calldata _anchor, bytes calldata _headers) external returns (bool);\n\n function addHeadersWithRetarget(\n bytes calldata _oldPeriodStartHeader,\n bytes calldata _oldPeriodEndHeader,\n bytes calldata _headers\n ) external returns (bool);\n\n function markNewHeaviest(\n bytes32 _ancestor,\n bytes calldata _currentBest,\n bytes calldata _newBest,\n uint256 _limit\n ) external returns (bool);\n}\n\ncontract Relay is IRelay {\n using SafeMath for uint256;\n using BytesLib for bytes;\n using BTCUtils for bytes;\n using ValidateSPV for bytes;\n\n // How often do we store the height?\n // A higher number incurs less storage cost, but more lookup cost\n uint32 public constant HEIGHT_INTERVAL = 4;\n\n bytes32 internal relayGenesis;\n bytes32 internal bestKnownDigest;\n bytes32 internal lastReorgCommonAncestor;\n mapping (bytes32 => bytes32) internal previousBlock;\n mapping (bytes32 => uint256) internal blockHeight;\n\n uint256 internal currentEpochDiff;\n uint256 internal prevEpochDiff;\n\n\n /// @notice Gives a starting point for the relay\n /// @dev We don't check this AT ALL really. Don't use relays with bad genesis\n /// @param _genesisHeader The starting header\n /// @param _height The starting height\n /// @param _periodStart The hash of the first header in the genesis epoch\n constructor(bytes memory _genesisHeader, uint256 _height, bytes32 _periodStart) public {\n require(_genesisHeader.length == 80, \"Stop being dumb\");\n bytes32 _genesisDigest = _genesisHeader.hash256();\n\n require(\n _periodStart & bytes32(0x0000000000000000000000000000000000000000000000000000000000ffffff) == bytes32(0),\n \"Period start hash does not have work. Hint: wrong byte order?\");\n\n relayGenesis = _genesisDigest;\n bestKnownDigest = _genesisDigest;\n lastReorgCommonAncestor = _genesisDigest;\n blockHeight[_genesisDigest] = _height;\n blockHeight[_periodStart] = _height.sub(_height % 2016);\n\n currentEpochDiff = _genesisHeader.extractDifficulty();\n }\n\n /// @notice Adds headers to storage after validating\n /// @dev We check integrity and consistency of the header chain\n /// @param _anchor The header immediately preceeding the new chain\n /// @param _headers A tightly-packed list of new 80-byte Bitcoin headers to record\n /// @param _internal True if called internally from addHeadersWithRetarget, false otherwise\n /// @return True if successfully written, error otherwise\n function _addHeaders(bytes memory _anchor, bytes memory _headers, bool _internal) internal returns (bool) {\n uint256 _height;\n bytes memory _header;\n bytes32 _currentDigest;\n bytes32 _previousDigest = _anchor.hash256();\n\n uint256 _target = _headers.slice(0, 80).extractTarget();\n uint256 _anchorHeight = _findHeight(_previousDigest); /* NB: errors if unknown */\n\n require(\n _internal || _anchor.extractTarget() == _target,\n \"Unexpected retarget on external call\");\n require(_headers.length % 80 == 0, \"Header array length must be divisible by 80\");\n\n /*\n NB:\n 1. check that the header has sufficient work\n 2. check that headers are in a coherent chain (no retargets, hash links good)\n 3. Store the block connection\n 4. Store the height\n */\n for (uint256 i = 0; i < _headers.length / 80; i = i.add(1)) {\n _header = _headers.slice(i.mul(80), 80);\n _height = _anchorHeight.add(i + 1);\n _currentDigest = _header.hash256();\n\n /*\n NB:\n if the block is already authenticated, we don't need to a work check\n Or write anything to state. This saves gas\n */\n if (previousBlock[_currentDigest] == bytes32(0)) {\n require(\n abi.encodePacked(_currentDigest).reverseEndianness().bytesToUint() <= _target,\n \"Header work is insufficient\");\n previousBlock[_currentDigest] = _previousDigest;\n if (_height % HEIGHT_INTERVAL == 0) {\n /*\n NB: We store the height only every 4th header to save gas\n */\n blockHeight[_currentDigest] = _height;\n }\n }\n\n /* NB: we do still need to make chain level checks tho */\n require(_header.extractTarget() == _target, \"Target changed unexpectedly\");\n require(_header.validateHeaderPrevHash(_previousDigest), \"Headers do not form a consistent chain\");\n\n _previousDigest = _currentDigest;\n }\n\n emit Extension(\n _anchor.hash256(),\n _currentDigest);\n return true;\n }\n\n /// @notice Adds headers to storage after validating\n /// @dev We check integrity and consistency of the header chain\n /// @param _anchor The header immediately preceeding the new chain\n /// @param _headers A tightly-packed list of 80-byte Bitcoin headers\n /// @return True if successfully written, error otherwise\n function addHeaders(bytes calldata _anchor, bytes calldata _headers) external returns (bool) {\n return _addHeaders(_anchor, _headers, false);\n }\n\n /// @notice Adds headers to storage, performs additional validation of retarget\n /// @dev Checks the retarget, the heights, and the linkage\n /// @param _oldPeriodStartHeader The first header in the difficulty period being closed\n /// @param _oldPeriodEndHeader The last header in the difficulty period being closed\n /// @param _headers A tightly-packed list of 80-byte Bitcoin headers\n /// @return True if successfully written, error otherwise\n function addHeadersWithRetarget(\n bytes calldata _oldPeriodStartHeader,\n bytes calldata _oldPeriodEndHeader,\n bytes calldata _headers\n ) external returns (bool) {\n return _addHeadersWithRetarget(_oldPeriodStartHeader, _oldPeriodEndHeader, _headers);\n }\n\n /// @notice Adds headers to storage, performs additional validation of retarget\n /// @dev Checks the retarget, the heights, and the linkage\n /// @param _oldPeriodStartHeader The first header in the difficulty period being closed\n /// @param _oldPeriodEndHeader The last header in the difficulty period being closed\n /// @param _headers A tightly-packed list of 80-byte Bitcoin headers\n /// @return True if successfully written, error otherwise\n function _addHeadersWithRetarget(\n bytes memory _oldPeriodStartHeader,\n bytes memory _oldPeriodEndHeader,\n bytes memory _headers\n ) internal returns (bool) {\n /* NB: requires that both blocks are known */\n uint256 _startHeight = _findHeight(_oldPeriodStartHeader.hash256());\n uint256 _endHeight = _findHeight(_oldPeriodEndHeader.hash256());\n\n /* NB: retargets should happen at 2016 block intervals */\n require(\n _endHeight % 2016 == 2015,\n \"Must provide the last header of the closing difficulty period\");\n require(\n _endHeight == _startHeight.add(2015),\n \"Must provide exactly 1 difficulty period\");\n require(\n _oldPeriodStartHeader.extractDifficulty() == _oldPeriodEndHeader.extractDifficulty(),\n \"Period header difficulties do not match\");\n\n /* NB: This comparison looks weird because header nBits encoding truncates targets */\n bytes memory _newPeriodStart = _headers.slice(0, 80);\n uint256 _actualTarget = _newPeriodStart.extractTarget();\n uint256 _expectedTarget = BTCUtils.retargetAlgorithm(\n _oldPeriodStartHeader.extractTarget(),\n _oldPeriodStartHeader.extractTimestamp(),\n _oldPeriodEndHeader.extractTimestamp()\n );\n require(\n (_actualTarget & _expectedTarget) == _actualTarget,\n \"Invalid retarget provided\");\n\n // If the current known prevEpochDiff doesn't match, and this old period is near the chaintip/\n // update the stored prevEpochDiff\n // Don't update if this is a deep past epoch\n uint256 _oldDiff = _oldPeriodStartHeader.extractDifficulty();\n if (prevEpochDiff != _oldDiff && _endHeight > _findHeight(bestKnownDigest).sub(2016)) {\n prevEpochDiff = _oldDiff;\n }\n\n // Pass all but the first through to be added\n return _addHeaders(_oldPeriodEndHeader, _headers, true);\n }\n\n /// @notice Finds the height of a header by its digest\n /// @dev Will fail if the header is unknown\n /// @param _digest The header digest to search for\n /// @return The height of the header\n function _findHeight(bytes32 _digest) internal view returns (uint256) {\n uint256 _height = 0;\n bytes32 _current = _digest;\n for (uint256 i = 0; i < HEIGHT_INTERVAL + 1; i = i.add(1)) {\n _height = blockHeight[_current];\n if (_height == 0) {\n _current = previousBlock[_current];\n } else {\n return _height.add(i);\n }\n }\n revert(\"Unknown block\");\n }\n\n /// @notice Finds the height of a header by its digest\n /// @dev Will fail if the header is unknown\n /// @param _digest The header digest to search for\n /// @return The height of the header, or error if unknown\n function findHeight(bytes32 _digest) external view returns (uint256) {\n return _findHeight(_digest);\n }\n\n /// @notice Finds an ancestor for a block by its digest\n /// @dev Will fail if the header is unknown\n /// @param _digest The header digest to search for\n /// @return The height of the header, or error if unknown\n function _findAncestor(bytes32 _digest, uint256 _offset) internal view returns (bytes32) {\n bytes32 _current = _digest;\n for (uint256 i = 0; i < _offset; i = i.add(1)) {\n _current = previousBlock[_current];\n }\n require(_current != bytes32(0), \"Unknown ancestor\");\n return _current;\n }\n\n /// @notice Finds an ancestor for a block by its digest\n /// @dev Will fail if the header is unknown\n /// @param _digest The header digest to search for\n /// @return The height of the header, or error if unknown\n function findAncestor(bytes32 _digest, uint256 _offset) external view returns (bytes32) {\n return _findAncestor(_digest, _offset);\n }\n\n /// @notice Checks if a digest is an ancestor of the current one\n /// @dev Limit the amount of lookups (and thus gas usage) with _limit\n /// @param _ancestor The prospective ancestor\n /// @param _descendant The descendant to check\n /// @param _limit The maximum number of blocks to check\n /// @return true if ancestor is at most limit blocks lower than descendant, otherwise false\n function _isAncestor(bytes32 _ancestor, bytes32 _descendant, uint256 _limit) internal view returns (bool) {\n bytes32 _current = _descendant;\n /* NB: 200 gas/read, so gas is capped at ~200 * limit */\n for (uint256 i = 0; i < _limit; i = i.add(1)) {\n if (_current == _ancestor) {\n return true;\n }\n _current = previousBlock[_current];\n }\n return false;\n }\n\n /// @notice Checks if a digest is an ancestor of the current one\n /// @dev Limit the amount of lookups (and thus gas usage) with _limit\n /// @param _ancestor The prospective ancestor\n /// @param _descendant The descendant to check\n /// @param _limit The maximum number of blocks to check\n /// @return true if ancestor is at most limit blocks lower than descendant, otherwise false\n function isAncestor(bytes32 _ancestor, bytes32 _descendant, uint256 _limit) external view returns (bool) {\n return _isAncestor(_ancestor, _descendant, _limit);\n }\n\n /// @notice Gives a starting point for the relay\n /// @dev We don't check this AT ALL really. Don't use relays with bad genesis\n /// @param _ancestor The digest of the most recent common ancestor\n /// @param _currentBest The 80-byte header referenced by bestKnownDigest\n /// @param _newBest The 80-byte header to mark as the new best\n /// @param _limit Limit the amount of traversal of the chain\n /// @return True if successfully updates bestKnownDigest, error otherwise\n function _markNewHeaviest(\n bytes32 _ancestor,\n bytes memory _currentBest,\n bytes memory _newBest,\n uint256 _limit\n ) internal returns (bool) {\n bytes32 _newBestDigest = _newBest.hash256();\n bytes32 _currentBestDigest = _currentBest.hash256();\n require(_currentBestDigest == bestKnownDigest, \"Passed in best is not best known\");\n require(\n previousBlock[_newBestDigest] != bytes32(0),\n \"New best is unknown\");\n require(\n _isMostRecentAncestor(_ancestor, bestKnownDigest, _newBestDigest, _limit),\n \"Ancestor must be heaviest common ancestor\");\n require(\n _heaviestFromAncestor(_ancestor, _currentBest, _newBest) == _newBestDigest,\n \"New best hash does not have more work than previous\");\n\n bestKnownDigest = _newBestDigest;\n lastReorgCommonAncestor = _ancestor;\n\n uint256 _newDiff = _newBest.extractDifficulty();\n if (_newDiff != currentEpochDiff) {\n currentEpochDiff = _newDiff;\n }\n\n emit Reorg(\n _currentBestDigest,\n _newBestDigest,\n _ancestor);\n return true;\n }\n\n /// @notice Gives a starting point for the relay\n /// @dev We don't check this AT ALL really. Don't use relays with bad genesis\n /// @param _ancestor The digest of the most recent common ancestor\n /// @param _currentBest The 80-byte header referenced by bestKnownDigest\n /// @param _newBest The 80-byte header to mark as the new best\n /// @param _limit Limit the amount of traversal of the chain\n /// @return True if successfully updates bestKnownDigest, error otherwise\n function markNewHeaviest(\n bytes32 _ancestor,\n bytes calldata _currentBest,\n bytes calldata _newBest,\n uint256 _limit\n ) external returns (bool) {\n return _markNewHeaviest(_ancestor, _currentBest, _newBest, _limit);\n }\n\n /// @notice Checks if a digest is an ancestor of the current one\n /// @dev Limit the amount of lookups (and thus gas usage) with _limit\n /// @param _ancestor The prospective shared ancestor\n /// @param _left A chain tip\n /// @param _right A chain tip\n /// @param _limit The maximum number of blocks to check\n /// @return true if it is the most recent common ancestor within _limit, false otherwise\n function _isMostRecentAncestor(\n bytes32 _ancestor,\n bytes32 _left,\n bytes32 _right,\n uint256 _limit\n ) internal view returns (bool) {\n /* NB: sure why not */\n if (_ancestor == _left && _ancestor == _right) {\n return true;\n }\n\n bytes32 _leftCurrent = _left;\n bytes32 _rightCurrent = _right;\n bytes32 _leftPrev = _left;\n bytes32 _rightPrev = _right;\n\n for(uint256 i = 0; i < _limit; i = i.add(1)) {\n if (_leftPrev != _ancestor) {\n _leftCurrent = _leftPrev; // cheap\n _leftPrev = previousBlock[_leftPrev]; // expensive\n }\n if (_rightPrev != _ancestor) {\n _rightCurrent = _rightPrev; // cheap\n _rightPrev = previousBlock[_rightPrev]; // expensive\n }\n }\n if (_leftCurrent == _rightCurrent) {return false;} /* NB: If the same, they're a nearer ancestor */\n if (_leftPrev != _rightPrev) {return false;} /* NB: Both must be ancestor */\n return true;\n }\n\n /// @notice Checks if a digest is an ancestor of the current one\n /// @dev Limit the amount of lookups (and thus gas usage) with _limit\n /// @param _ancestor The prospective shared ancestor\n /// @param _left A chain tip\n /// @param _right A chain tip\n /// @param _limit The maximum number of blocks to check\n /// @return true if it is the most recent common ancestor within _limit, false otherwise\n function isMostRecentAncestor(\n bytes32 _ancestor,\n bytes32 _left,\n bytes32 _right,\n uint256 _limit\n ) external view returns (bool) {\n return _isMostRecentAncestor(_ancestor, _left, _right, _limit);\n }\n\n /// @notice Decides which header is heaviest from the ancestor\n /// @dev Does not support reorgs above 2017 blocks (:\n /// @param _ancestor The prospective shared ancestor\n /// @param _left A chain tip\n /// @param _right A chain tip\n /// @return true if it is the most recent common ancestor within _limit, false otherwise\n function _heaviestFromAncestor(\n bytes32 _ancestor,\n bytes memory _left,\n bytes memory _right\n ) internal view returns (bytes32) {\n uint256 _ancestorHeight = _findHeight(_ancestor);\n uint256 _leftHeight = _findHeight(_left.hash256());\n uint256 _rightHeight = _findHeight(_right.hash256());\n\n require(\n _leftHeight >= _ancestorHeight && _rightHeight >= _ancestorHeight,\n \"A descendant height is below the ancestor height\");\n\n /* NB: we can shortcut if one block is in a new difficulty window and the other isn't */\n uint256 _nextPeriodStartHeight = _ancestorHeight.add(2016).sub(_ancestorHeight % 2016);\n bool _leftInPeriod = _leftHeight < _nextPeriodStartHeight;\n bool _rightInPeriod = _rightHeight < _nextPeriodStartHeight;\n\n /*\n NB:\n 1. Left is in a new window, right is in the old window. Left is heavier\n 2. Right is in a new window, left is in the old window. Right is heavier\n 3. Both are in the same window, choose the higher one\n 4. They're in different new windows. Choose the heavier one\n */\n if (!_leftInPeriod && _rightInPeriod) {return _left.hash256();}\n if (_leftInPeriod && !_rightInPeriod) {return _right.hash256();}\n if (_leftInPeriod && _rightInPeriod) {\n return _leftHeight >= _rightHeight ? _left.hash256() : _right.hash256();\n } else { // if (!_leftInPeriod && !_rightInPeriod) {\n if (((_leftHeight % 2016).mul(_left.extractDifficulty())) <\n (_rightHeight % 2016).mul(_right.extractDifficulty())) {\n return _right.hash256();\n } else {\n return _left.hash256();\n }\n }\n }\n\n /// @notice Decides which header is heaviest from the ancestor\n /// @dev Does not support reorgs above 2017 blocks (:\n /// @param _ancestor The prospective shared ancestor\n /// @param _left A chain tip\n /// @param _right A chain tip\n /// @return true if it is the most recent common ancestor within _limit, false otherwise\n function heaviestFromAncestor(\n bytes32 _ancestor,\n bytes calldata _left,\n bytes calldata _right\n ) external view returns (bytes32) {\n return _heaviestFromAncestor(_ancestor, _left, _right);\n }\n\n /// @notice Getter for currentEpochDiff\n /// @dev This is updated when a new heavist header has a new diff\n /// @return The difficulty of the bestKnownDigest\n function getCurrentEpochDifficulty() external view returns (uint256) {\n return currentEpochDiff;\n }\n /// @notice Getter for prevEpochDiff\n /// @dev This is updated when a difficulty change is accepted\n /// @return The difficulty of the previous epoch\n function getPrevEpochDifficulty() external view returns (uint256) {\n return prevEpochDiff;\n }\n\n /// @notice Getter for relayGenesis\n /// @dev This is an initialization parameter\n /// @return The hash of the first block of the relay\n function getRelayGenesis() public view returns (bytes32) {\n return relayGenesis;\n }\n\n /// @notice Getter for bestKnownDigest\n /// @dev This updated only by calling markNewHeaviest\n /// @return The hash of the best marked chain tip\n function getBestKnownDigest() public view returns (bytes32) {\n return bestKnownDigest;\n }\n\n /// @notice Getter for relayGenesis\n /// @dev This is updated only by calling markNewHeaviest\n /// @return The hash of the shared ancestor of the most recent fork\n function getLastReorgCommonAncestor() public view returns (bytes32) {\n return lastReorgCommonAncestor;\n }\n}\n", "sourcePath": "/home/james/devel/relays/solidity/contracts/Relay.sol", "ast": { "absolutePath": "/home/james/devel/relays/solidity/contracts/Relay.sol", "exportedSymbols": { "IRelay": [ 1166 ], "Relay": [ 2252 ] }, "id": 2253, "nodeType": "SourceUnit", "nodes": [ { "id": 1034, "literals": [ "solidity", "^", "0.5", ".10" ], "nodeType": "PragmaDirective", "src": "0:24:3" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/SafeMath.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/SafeMath.sol", "id": 1036, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 4367, "src": "88:74:3", "symbolAliases": [ { "foreign": 1035, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol", "id": 1038, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 4270, "src": "163:74:3", "symbolAliases": [ { "foreign": 1037, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol", "id": 1040, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 4083, "src": "238:74:3", "symbolAliases": [ { "foreign": 1039, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/ValidateSPV.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/ValidateSPV.sol", "id": 1042, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 5009, "src": "313:80:3", "symbolAliases": [ { "foreign": 1041, "local": null } ], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "interface", "documentation": null, "fullyImplemented": false, "id": 1166, "linearizedBaseContracts": [ 1166 ], "name": "IRelay", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": null, "id": 1048, "name": "Extension", "nodeType": "EventDefinition", "parameters": { "id": 1047, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1044, "indexed": true, "name": "_first", "nodeType": "VariableDeclaration", "scope": 1048, "src": "435:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1043, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "435:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1046, "indexed": true, "name": "_last", "nodeType": "VariableDeclaration", "scope": 1048, "src": "459:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1045, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "459:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "434:47:3" }, "src": "419:63:3" }, { "anonymous": false, "documentation": null, "id": 1056, "name": "Reorg", "nodeType": "EventDefinition", "parameters": { "id": 1055, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1050, "indexed": true, "name": "_from", "nodeType": "VariableDeclaration", "scope": 1056, "src": "499:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1049, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "499:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1052, "indexed": true, "name": "_to", "nodeType": "VariableDeclaration", "scope": 1056, "src": "522:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1051, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "522:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1054, "indexed": true, "name": "_gcd", "nodeType": "VariableDeclaration", "scope": 1056, "src": "543:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1053, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "543:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "498:66:3" }, "src": "487:78:3" }, { "body": null, "documentation": null, "id": 1069, "implemented": false, "kind": "function", "modifiers": [], "name": "isMostRecentAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1065, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1058, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1069, "src": "610:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1057, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "610:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1060, "name": "_left", "nodeType": "VariableDeclaration", "scope": 1069, "src": "637:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1059, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "637:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1062, "name": "_right", "nodeType": "VariableDeclaration", "scope": 1069, "src": "660:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1061, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "660:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1064, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1069, "src": "684:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1063, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "684:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "600:104:3" }, "returnParameters": { "id": 1068, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1067, "name": "", "nodeType": "VariableDeclaration", "scope": 1069, "src": "728:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1066, "name": "bool", "nodeType": "ElementaryTypeName", "src": "728:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "727:6:3" }, "scope": 1166, "src": "571:163:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1074, "implemented": false, "kind": "function", "modifiers": [], "name": "getCurrentEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 1070, "nodeType": "ParameterList", "parameters": [], "src": "774:2:3" }, "returnParameters": { "id": 1073, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1072, "name": "", "nodeType": "VariableDeclaration", "scope": 1074, "src": "800:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1071, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "800:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "799:9:3" }, "scope": 1166, "src": "740:69:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1079, "implemented": false, "kind": "function", "modifiers": [], "name": "getPrevEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 1075, "nodeType": "ParameterList", "parameters": [], "src": "845:2:3" }, "returnParameters": { "id": 1078, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1077, "name": "", "nodeType": "VariableDeclaration", "scope": 1079, "src": "871:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1076, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "871:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "870:9:3" }, "scope": 1166, "src": "814:66:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1084, "implemented": false, "kind": "function", "modifiers": [], "name": "getRelayGenesis", "nodeType": "FunctionDefinition", "parameters": { "id": 1080, "nodeType": "ParameterList", "parameters": [], "src": "909:2:3" }, "returnParameters": { "id": 1083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1082, "name": "", "nodeType": "VariableDeclaration", "scope": 1084, "src": "935:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1081, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "935:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "934:9:3" }, "scope": 1166, "src": "885:59:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1089, "implemented": false, "kind": "function", "modifiers": [], "name": "getBestKnownDigest", "nodeType": "FunctionDefinition", "parameters": { "id": 1085, "nodeType": "ParameterList", "parameters": [], "src": "976:2:3" }, "returnParameters": { "id": 1088, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1087, "name": "", "nodeType": "VariableDeclaration", "scope": 1089, "src": "1002:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1086, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1002:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1001:9:3" }, "scope": 1166, "src": "949:62:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1094, "implemented": false, "kind": "function", "modifiers": [], "name": "getLastReorgCommonAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1090, "nodeType": "ParameterList", "parameters": [], "src": "1051:2:3" }, "returnParameters": { "id": 1093, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1092, "name": "", "nodeType": "VariableDeclaration", "scope": 1094, "src": "1077:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1091, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1077:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1076:9:3" }, "scope": 1166, "src": "1016:70:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1101, "implemented": false, "kind": "function", "modifiers": [], "name": "findHeight", "nodeType": "FunctionDefinition", "parameters": { "id": 1097, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1096, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1101, "src": "1112:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1095, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1112:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1111:17:3" }, "returnParameters": { "id": 1100, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1099, "name": "", "nodeType": "VariableDeclaration", "scope": 1101, "src": "1152:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1098, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1152:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1151:9:3" }, "scope": 1166, "src": "1092:69:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1110, "implemented": false, "kind": "function", "modifiers": [], "name": "findAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1106, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1103, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1110, "src": "1189:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1102, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1189:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1105, "name": "_offset", "nodeType": "VariableDeclaration", "scope": 1110, "src": "1206:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1104, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1206:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1188:34:3" }, "returnParameters": { "id": 1109, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1108, "name": "", "nodeType": "VariableDeclaration", "scope": 1110, "src": "1246:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1107, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1246:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1245:9:3" }, "scope": 1166, "src": "1167:88:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1121, "implemented": false, "kind": "function", "modifiers": [], "name": "isAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1117, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1112, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1281:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1111, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1281:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1114, "name": "_descendant", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1300:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1113, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1300:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1116, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1321:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1115, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1321:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1280:56:3" }, "returnParameters": { "id": 1120, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1119, "name": "", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1360:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1118, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1360:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1359:6:3" }, "scope": 1166, "src": "1261:105:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1132, "implemented": false, "kind": "function", "modifiers": [], "name": "heaviestFromAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1128, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1123, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1411:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1122, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1411:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1125, "name": "_left", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1438:20:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1124, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1438:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1127, "name": "_right", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1468:21:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1126, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1468:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1401:94:3" }, "returnParameters": { "id": 1131, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1130, "name": "", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1519:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1129, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1519:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1518:9:3" }, "scope": 1166, "src": "1372:156:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1141, "implemented": false, "kind": "function", "modifiers": [], "name": "addHeaders", "nodeType": "FunctionDefinition", "parameters": { "id": 1137, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1134, "name": "_anchor", "nodeType": "VariableDeclaration", "scope": 1141, "src": "1554:22:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1133, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1554:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1136, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1141, "src": "1578:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1135, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1578:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1553:49:3" }, "returnParameters": { "id": 1140, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1139, "name": "", "nodeType": "VariableDeclaration", "scope": 1141, "src": "1621:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1138, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1621:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1620:6:3" }, "scope": 1166, "src": "1534:93:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1152, "implemented": false, "kind": "function", "modifiers": [], "name": "addHeadersWithRetarget", "nodeType": "FunctionDefinition", "parameters": { "id": 1148, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1143, "name": "_oldPeriodStartHeader", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1674:36:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1142, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1674:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1145, "name": "_oldPeriodEndHeader", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1720:34:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1144, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1720:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1147, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1764:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1146, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1764:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1664:129:3" }, "returnParameters": { "id": 1151, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1150, "name": "", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1812:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1149, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1812:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1811:6:3" }, "scope": 1166, "src": "1633:185:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1165, "implemented": false, "kind": "function", "modifiers": [], "name": "markNewHeaviest", "nodeType": "FunctionDefinition", "parameters": { "id": 1161, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1154, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1858:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1153, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1858:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1156, "name": "_currentBest", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1885:27:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1155, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1885:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1158, "name": "_newBest", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1922:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1157, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1922:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1160, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1955:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1159, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1955:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1848:127:3" }, "returnParameters": { "id": 1164, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1163, "name": "", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1994:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1162, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1994:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1993:6:3" }, "scope": 1166, "src": "1824:176:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" } ], "scope": 2253, "src": "395:1607:3" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 1167, "name": "IRelay", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1166, "src": "2022:6:3", "typeDescriptions": { "typeIdentifier": "t_contract$_IRelay_$1166", "typeString": "contract IRelay" } }, "id": 1168, "nodeType": "InheritanceSpecifier", "src": "2022:6:3" } ], "contractDependencies": [ 1166 ], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "id": 2252, "linearizedBaseContracts": [ 2252, 1166 ], "name": "Relay", "nodeType": "ContractDefinition", "nodes": [ { "id": 1171, "libraryName": { "contractScope": null, "id": 1169, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4366, "src": "2041:8:3", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$4366", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "2035:27:3", "typeName": { "id": 1170, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2054:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 1174, "libraryName": { "contractScope": null, "id": 1172, "name": "BytesLib", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4269, "src": "2073:8:3", "typeDescriptions": { "typeIdentifier": "t_contract$_BytesLib_$4269", "typeString": "library BytesLib" } }, "nodeType": "UsingForDirective", "src": "2067:25:3", "typeName": { "id": 1173, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2086:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "id": 1177, "libraryName": { "contractScope": null, "id": 1175, "name": "BTCUtils", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4082, "src": "2103:8:3", "typeDescriptions": { "typeIdentifier": "t_contract$_BTCUtils_$4082", "typeString": "library BTCUtils" } }, "nodeType": "UsingForDirective", "src": "2097:25:3", "typeName": { "id": 1176, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2116:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "id": 1180, "libraryName": { "contractScope": null, "id": 1178, "name": "ValidateSPV", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5008, "src": "2133:11:3", "typeDescriptions": { "typeIdentifier": "t_contract$_ValidateSPV_$5008", "typeString": "library ValidateSPV" } }, "nodeType": "UsingForDirective", "src": "2127:28:3", "typeName": { "id": 1179, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2149:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "constant": true, "id": 1183, "name": "HEIGHT_INTERVAL", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2272:42:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "typeName": { "id": 1181, "name": "uint32", "nodeType": "ElementaryTypeName", "src": "2272:6:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "value": { "argumentTypes": null, "hexValue": "34", "id": 1182, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2313:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_4_by_1", "typeString": "int_const 4" }, "value": "4" }, "visibility": "public" }, { "constant": false, "id": 1185, "name": "relayGenesis", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2321:29:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1184, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2321:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1187, "name": "bestKnownDigest", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2356:32:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1186, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2356:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1189, "name": "lastReorgCommonAncestor", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2394:40:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1188, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2394:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1193, "name": "previousBlock", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2440:51:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" }, "typeName": { "id": 1192, "keyType": { "id": 1190, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2449:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "2440:28:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" }, "valueType": { "id": 1191, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2460:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1197, "name": "blockHeight", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2497:49:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" }, "typeName": { "id": 1196, "keyType": { "id": 1194, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2506:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "2497:28:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" }, "valueType": { "id": 1195, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2517:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1199, "name": "currentEpochDiff", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2553:33:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1198, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2553:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1201, "name": "prevEpochDiff", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2592:30:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1200, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2592:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "body": { "id": 1272, "nodeType": "Block", "src": "3083:653:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1214, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1211, "name": "_genesisHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1203, "src": "3101:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1212, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3101:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "3830", "id": 1213, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3126:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" }, "src": "3101:27:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "53746f70206265696e672064756d62", "id": 1215, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3130:17:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_54f9a5f9e9dfa58d8856435ba6e7418b795ac217ba9b784a12213c7ba6375b05", "typeString": "literal_string \"Stop being dumb\"" }, "value": "Stop being dumb" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_54f9a5f9e9dfa58d8856435ba6e7418b795ac217ba9b784a12213c7ba6375b05", "typeString": "literal_string \"Stop being dumb\"" } ], "id": 1210, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "3093:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1216, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3093:55:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1217, "nodeType": "ExpressionStatement", "src": "3093:55:3" }, { "assignments": [ 1219 ], "declarations": [ { "constant": false, "id": 1219, "name": "_genesisDigest", "nodeType": "VariableDeclaration", "scope": 1272, "src": "3158:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1218, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3158:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1223, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1220, "name": "_genesisHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1203, "src": "3183:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1221, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "3183:22:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1222, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3183:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "3158:49:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1233, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1229, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1225, "name": "_periodStart", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1207, "src": "3239:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "307830303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030666666666666", "id": 1227, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3262:66:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_16777215_by_1", "typeString": "int_const 16777215" }, "value": "0x0000000000000000000000000000000000000000000000000000000000ffffff" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_16777215_by_1", "typeString": "int_const 16777215" } ], "id": 1226, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "3254:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1228, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3254:75:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3239:90:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1231, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3341:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1230, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "3333:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1232, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3333:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3239:104:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "506572696f64207374617274206861736820646f6573206e6f74206861766520776f726b2e2048696e743a2077726f6e672062797465206f726465723f", "id": 1234, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3357:63:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c63e0adf63c0728a57e27fbecf3408104165ff577e498d3d8684c7fbae01d26d", "typeString": "literal_string \"Period start hash does not have work. Hint: wrong byte order?\"" }, "value": "Period start hash does not have work. Hint: wrong byte order?" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c63e0adf63c0728a57e27fbecf3408104165ff577e498d3d8684c7fbae01d26d", "typeString": "literal_string \"Period start hash does not have work. Hint: wrong byte order?\"" } ], "id": 1224, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "3218:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1235, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3218:203:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1236, "nodeType": "ExpressionStatement", "src": "3218:203:3" }, { "expression": { "argumentTypes": null, "id": 1239, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1237, "name": "relayGenesis", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1185, "src": "3432:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1238, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3447:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3432:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1240, "nodeType": "ExpressionStatement", "src": "3432:29:3" }, { "expression": { "argumentTypes": null, "id": 1243, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1241, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "3471:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1242, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3489:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3471:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1244, "nodeType": "ExpressionStatement", "src": "3471:32:3" }, { "expression": { "argumentTypes": null, "id": 1247, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1245, "name": "lastReorgCommonAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1189, "src": "3513:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1246, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3539:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3513:40:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1248, "nodeType": "ExpressionStatement", "src": "3513:40:3" }, { "expression": { "argumentTypes": null, "id": 1253, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1249, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "3563:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1251, "indexExpression": { "argumentTypes": null, "id": 1250, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3575:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3563:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1252, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1205, "src": "3593:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3563:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1254, "nodeType": "ExpressionStatement", "src": "3563:37:3" }, { "expression": { "argumentTypes": null, "id": 1264, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1255, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "3610:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1257, "indexExpression": { "argumentTypes": null, "id": 1256, "name": "_periodStart", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1207, "src": "3622:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3610:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1262, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1260, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1205, "src": "3650:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 1261, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3660:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "3650:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 1258, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1205, "src": "3638:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1259, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4340, "src": "3638:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1263, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3638:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3610:55:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1265, "nodeType": "ExpressionStatement", "src": "3610:55:3" }, { "expression": { "argumentTypes": null, "id": 1270, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1266, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "3676:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1267, "name": "_genesisHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1203, "src": "3695:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1268, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "3695:32:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1269, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3695:34:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3676:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1271, "nodeType": "ExpressionStatement", "src": "3676:53:3" } ] }, "documentation": "@notice Gives a starting point for the relay\n @dev We don't check this AT ALL really. Don't use relays with bad genesis\n @param _genesisHeader The starting header\n @param _height The starting height\n @param _periodStart The hash of the first header in the genesis epoch", "id": 1273, "implemented": true, "kind": "constructor", "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 1208, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1203, "name": "_genesisHeader", "nodeType": "VariableDeclaration", "scope": 1273, "src": "3008:27:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1202, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3008:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1205, "name": "_height", "nodeType": "VariableDeclaration", "scope": 1273, "src": "3037:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1204, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3037:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1207, "name": "_periodStart", "nodeType": "VariableDeclaration", "scope": 1273, "src": "3054:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1206, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3054:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "3007:68:3" }, "returnParameters": { "id": 1209, "nodeType": "ParameterList", "parameters": [], "src": "3083:0:3" }, "scope": 2252, "src": "2996:740:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 1453, "nodeType": "Block", "src": "4340:2176:3", "statements": [ { "assignments": [ 1285 ], "declarations": [ { "constant": false, "id": 1285, "name": "_height", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4350:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1284, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4350:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1286, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "4350:15:3" }, { "assignments": [ 1288 ], "declarations": [ { "constant": false, "id": 1288, "name": "_header", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4375:20:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1287, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4375:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 1289, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "4375:20:3" }, { "assignments": [ 1291 ], "declarations": [ { "constant": false, "id": 1291, "name": "_currentDigest", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4405:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1290, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4405:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1292, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "4405:22:3" }, { "assignments": [ 1294 ], "declarations": [ { "constant": false, "id": 1294, "name": "_previousDigest", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4437:23:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1293, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4437:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1298, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1295, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1275, "src": "4463:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1296, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "4463:15:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1297, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4463:17:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "4437:43:3" }, { "assignments": [ 1300 ], "declarations": [ { "constant": false, "id": 1300, "name": "_target", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4491:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1299, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4491:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1308, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1303, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4524:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, { "argumentTypes": null, "hexValue": "3830", "id": 1304, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4527:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1301, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "4509:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1302, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "slice", "nodeType": "MemberAccess", "referencedDeclaration": 4133, "src": "4509:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1305, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4509:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1306, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "4509:35:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1307, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4509:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "4491:55:3" }, { "assignments": [ 1310 ], "declarations": [ { "constant": false, "id": 1310, "name": "_anchorHeight", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4556:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1309, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4556:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1314, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1312, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "4592:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1311, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "4580:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1313, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4580:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "4556:52:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1322, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1316, "name": "_internal", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1279, "src": "4669:9:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1321, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1317, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1275, "src": "4682:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1318, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "4682:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1319, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4682:23:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1320, "name": "_target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1300, "src": "4709:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "4682:34:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "4669:47:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "556e6578706563746564207265746172676574206f6e2065787465726e616c2063616c6c", "id": 1323, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4730:38:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c33296853216f4d74abe3a6fbf840e018f81995cd8c40108858eaa3d5148cebc", "typeString": "literal_string \"Unexpected retarget on external call\"" }, "value": "Unexpected retarget on external call" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c33296853216f4d74abe3a6fbf840e018f81995cd8c40108858eaa3d5148cebc", "typeString": "literal_string \"Unexpected retarget on external call\"" } ], "id": 1315, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "4648:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1324, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4648:121:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1325, "nodeType": "ExpressionStatement", "src": "4648:121:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1332, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1330, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1327, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "4787:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1328, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4787:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "3830", "id": 1329, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4805:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" }, "src": "4787:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1331, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4811:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "4787:25:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "486561646572206172726179206c656e677468206d75737420626520646976697369626c65206279203830", "id": 1333, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4814:45:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_64951f0822ebc61755f01c687a3aabd90c37a5b5a62d0764ef2ec9edb60caca4", "typeString": "literal_string \"Header array length must be divisible by 80\"" }, "value": "Header array length must be divisible by 80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_64951f0822ebc61755f01c687a3aabd90c37a5b5a62d0764ef2ec9edb60caca4", "typeString": "literal_string \"Header array length must be divisible by 80\"" } ], "id": 1326, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "4779:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1334, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4779:81:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1335, "nodeType": "ExpressionStatement", "src": "4779:81:3" }, { "body": { "id": 1442, "nodeType": "Block", "src": "5170:1234:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1362, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1353, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "5184:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "3830", "id": 1358, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5215:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1356, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5209:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1357, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "mul", "nodeType": "MemberAccess", "referencedDeclaration": 4305, "src": "5209:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1359, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5209:9:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "3830", "id": 1360, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5220:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1354, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "5194:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1355, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "slice", "nodeType": "MemberAccess", "referencedDeclaration": 4133, "src": "5194:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1361, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5194:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "5184:39:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1363, "nodeType": "ExpressionStatement", "src": "5184:39:3" }, { "expression": { "argumentTypes": null, "id": 1371, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1364, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1285, "src": "5237:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1369, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1367, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5265:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 1368, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5269:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "5265:5:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 1365, "name": "_anchorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1310, "src": "5247:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1366, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "5247:17:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1370, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5247:24:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5237:34:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1372, "nodeType": "ExpressionStatement", "src": "5237:34:3" }, { "expression": { "argumentTypes": null, "id": 1377, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1373, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5285:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1374, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "5302:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1375, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "5302:15:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1376, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5302:17:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "5285:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1378, "nodeType": "ExpressionStatement", "src": "5285:34:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1385, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1379, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "5520:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1381, "indexExpression": { "argumentTypes": null, "id": 1380, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5534:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5520:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5561:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1382, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "5553:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1384, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5553:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "5520:43:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1420, "nodeType": "IfStatement", "src": "5516:560:3", "trueBody": { "id": 1419, "nodeType": "Block", "src": "5565:511:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1396, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1389, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5629:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 1387, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5010, "src": "5612:3:3", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 1388, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5612:16:3", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 1390, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5612:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1391, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "reverseEndianness", "nodeType": "MemberAccess", "referencedDeclaration": 2579, "src": "5612:50:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes memory)" } }, "id": 1392, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5612:52:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1393, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "bytesToUint", "nodeType": "MemberAccess", "referencedDeclaration": 2726, "src": "5612:64:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1394, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5612:66:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "id": 1395, "name": "_target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1300, "src": "5682:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5612:77:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "48656164657220776f726b20697320696e73756666696369656e74", "id": 1397, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5711:29:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_577a884d824749cadf11f1d13d4dc4655ad406f62456ad5e910541517ce4d497", "typeString": "literal_string \"Header work is insufficient\"" }, "value": "Header work is insufficient" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_577a884d824749cadf11f1d13d4dc4655ad406f62456ad5e910541517ce4d497", "typeString": "literal_string \"Header work is insufficient\"" } ], "id": 1386, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "5583:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1398, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5583:158:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1399, "nodeType": "ExpressionStatement", "src": "5583:158:3" }, { "expression": { "argumentTypes": null, "id": 1404, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1400, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "5759:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1402, "indexExpression": { "argumentTypes": null, "id": 1401, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5773:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5759:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1403, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "5791:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "5759:47:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1405, "nodeType": "ExpressionStatement", "src": "5759:47:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1410, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1408, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1406, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1285, "src": "5828:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "id": 1407, "name": "HEIGHT_INTERVAL", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1183, "src": "5838:15:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "src": "5828:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1409, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5857:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "5828:30:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1418, "nodeType": "IfStatement", "src": "5824:238:3", "trueBody": { "id": 1417, "nodeType": "Block", "src": "5860:202:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1415, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1411, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "6006:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1413, "indexExpression": { "argumentTypes": null, "id": 1412, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "6018:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6006:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1414, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1285, "src": "6036:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6006:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1416, "nodeType": "ExpressionStatement", "src": "6006:37:3" } ] } } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1426, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1422, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "6168:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1423, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "6168:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1424, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6168:23:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1425, "name": "_target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1300, "src": "6195:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6168:34:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "546172676574206368616e67656420756e65787065637465646c79", "id": 1427, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6204:29:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_7512beb8d719892f726a7e4249334e5ee85f327ca3e7b9c917a97c9e30ad0aa4", "typeString": "literal_string \"Target changed unexpectedly\"" }, "value": "Target changed unexpectedly" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_7512beb8d719892f726a7e4249334e5ee85f327ca3e7b9c917a97c9e30ad0aa4", "typeString": "literal_string \"Target changed unexpectedly\"" } ], "id": 1421, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "6160:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1428, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6160:74:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1429, "nodeType": "ExpressionStatement", "src": "6160:74:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1433, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "6287:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 1431, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "6256:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1432, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "validateHeaderPrevHash", "nodeType": "MemberAccess", "referencedDeclaration": 5007, "src": "6256:30:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_bytes32_$returns$_t_bool_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,bytes32) pure returns (bool)" } }, "id": 1434, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6256:47:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4865616465727320646f206e6f7420666f726d206120636f6e73697374656e7420636861696e", "id": 1435, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6305:40:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_09edac151df9e4894b9dc57d4b428f162596747b62bb7347fd3851a717f60df7", "typeString": "literal_string \"Headers do not form a consistent chain\"" }, "value": "Headers do not form a consistent chain" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_09edac151df9e4894b9dc57d4b428f162596747b62bb7347fd3851a717f60df7", "typeString": "literal_string \"Headers do not form a consistent chain\"" } ], "id": 1430, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "6248:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1436, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6248:98:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1437, "nodeType": "ExpressionStatement", "src": "6248:98:3" }, { "expression": { "argumentTypes": null, "id": 1440, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1438, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "6361:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1439, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "6379:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "6361:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1441, "nodeType": "ExpressionStatement", "src": "6361:32:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1345, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1340, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5130:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1344, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1341, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "5134:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1342, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5134:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "/", "rightExpression": { "argumentTypes": null, "hexValue": "3830", "id": 1343, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5152:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" }, "src": "5134:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5130:24:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1443, "initializationExpression": { "assignments": [ 1337 ], "declarations": [ { "constant": false, "id": 1337, "name": "i", "nodeType": "VariableDeclaration", "scope": 1443, "src": "5115:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1336, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5115:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1339, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1338, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5127:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "5115:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1351, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1346, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5156:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1349, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5166:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1347, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5160:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1348, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "5160:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1350, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5160:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5156:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1352, "nodeType": "ExpressionStatement", "src": "5156:12:3" }, "nodeType": "ForStatement", "src": "5110:1294:3" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1445, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1275, "src": "6442:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1446, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "6442:15:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1447, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6442:17:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1448, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "6473:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1444, "name": "Extension", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1048, "src": "6419:9:3", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_bytes32_$returns$__$", "typeString": "function (bytes32,bytes32)" } }, "id": 1449, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6419:69:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1450, "nodeType": "EmitStatement", "src": "6414:74:3" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1451, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "6505:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1283, "id": 1452, "nodeType": "Return", "src": "6498:11:3" } ] }, "documentation": "@notice Adds headers to storage after validating\n @dev We check integrity and consistency of the header chain\n @param _anchor The header immediately preceeding the new chain\n @param _headers A tightly-packed list of new 80-byte Bitcoin headers to record\n @param _internal True if called internally from addHeadersWithRetarget, false otherwise\n @return True if successfully written, error otherwise", "id": 1454, "implemented": true, "kind": "function", "modifiers": [], "name": "_addHeaders", "nodeType": "FunctionDefinition", "parameters": { "id": 1280, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1275, "name": "_anchor", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4255:20:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1274, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4255:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1277, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4277:21:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1276, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4277:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1279, "name": "_internal", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4300:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1278, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4300:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4254:61:3" }, "returnParameters": { "id": 1283, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1282, "name": "", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4334:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1281, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4334:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4333:6:3" }, "scope": 2252, "src": "4234:2282:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1469, "nodeType": "Block", "src": "6994:61:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1464, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1456, "src": "7023:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1465, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1458, "src": "7032:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "hexValue": "66616c7365", "id": 1466, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "7042:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 1463, "name": "_addHeaders", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1454, "src": "7011:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_bool_$returns$_t_bool_$", "typeString": "function (bytes memory,bytes memory,bool) returns (bool)" } }, "id": 1467, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7011:37:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1462, "id": 1468, "nodeType": "Return", "src": "7004:44:3" } ] }, "documentation": "@notice Adds headers to storage after validating\n @dev We check integrity and consistency of the header chain\n @param _anchor The header immediately preceeding the new chain\n @param _headers A tightly-packed list of 80-byte Bitcoin headers\n @return True if successfully written, error otherwise", "id": 1470, "implemented": true, "kind": "function", "modifiers": [], "name": "addHeaders", "nodeType": "FunctionDefinition", "parameters": { "id": 1459, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1456, "name": "_anchor", "nodeType": "VariableDeclaration", "scope": 1470, "src": "6921:22:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1455, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6921:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1458, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1470, "src": "6945:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1457, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6945:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "6920:49:3" }, "returnParameters": { "id": 1462, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1461, "name": "", "nodeType": "VariableDeclaration", "scope": 1470, "src": "6988:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1460, "name": "bool", "nodeType": "ElementaryTypeName", "src": "6988:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "6987:6:3" }, "scope": 2252, "src": "6901:154:3", "stateMutability": "nonpayable", "superFunction": 1141, "visibility": "external" }, { "body": { "id": 1487, "nodeType": "Block", "src": "7796:101:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1482, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1472, "src": "7837:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1483, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1474, "src": "7860:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1484, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1476, "src": "7881:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "id": 1481, "name": "_addHeadersWithRetarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1615, "src": "7813:23:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (bytes memory,bytes memory,bytes memory) returns (bool)" } }, "id": 1485, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7813:77:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1480, "id": 1486, "nodeType": "Return", "src": "7806:84:3" } ] }, "documentation": "@notice Adds headers to storage, performs additional validation of retarget\n @dev Checks the retarget, the heights, and the linkage\n @param _oldPeriodStartHeader The first header in the difficulty period being closed\n @param _oldPeriodEndHeader The last header in the difficulty period being closed\n @param _headers A tightly-packed list of 80-byte Bitcoin headers\n @return True if successfully written, error otherwise", "id": 1488, "implemented": true, "kind": "function", "modifiers": [], "name": "addHeadersWithRetarget", "nodeType": "FunctionDefinition", "parameters": { "id": 1477, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1472, "name": "_oldPeriodStartHeader", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7652:36:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1471, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7652:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1474, "name": "_oldPeriodEndHeader", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7698:34:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1473, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7698:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1476, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7742:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1475, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7742:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "7642:129:3" }, "returnParameters": { "id": 1480, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1479, "name": "", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7790:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1478, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7790:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "7789:6:3" }, "scope": 2252, "src": "7611:286:3", "stateMutability": "nonpayable", "superFunction": 1152, "visibility": "external" }, { "body": { "id": 1614, "nodeType": "Block", "src": "8633:1813:3", "statements": [ { "assignments": [ 1500 ], "declarations": [ { "constant": false, "id": 1500, "name": "_startHeight", "nodeType": "VariableDeclaration", "scope": 1614, "src": "8697:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1499, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8697:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1506, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1502, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "8732:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1503, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "8732:29:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1504, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8732:31:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1501, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "8720:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1505, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8720:44:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "8697:67:3" }, { "assignments": [ 1508 ], "declarations": [ { "constant": false, "id": 1508, "name": "_endHeight", "nodeType": "VariableDeclaration", "scope": 1614, "src": "8774:18:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1507, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8774:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1514, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1510, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "8807:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1511, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "8807:27:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1512, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8807:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1509, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "8795:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1513, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8795:42:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "8774:63:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1520, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1518, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1516, "name": "_endHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1508, "src": "8935:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 1517, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8948:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "8935:17:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "32303135", "id": 1519, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8956:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2015_by_1", "typeString": "int_const 2015" }, "value": "2015" }, "src": "8935:25:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4d7573742070726f7669646520746865206c61737420686561646572206f662074686520636c6f73696e6720646966666963756c747920706572696f64", "id": 1521, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8974:63:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_7bce8283552532854aff5aeca68cfd1afcae4f19a96f4f0f9a36c4ae487d1db8", "typeString": "literal_string \"Must provide the last header of the closing difficulty period\"" }, "value": "Must provide the last header of the closing difficulty period" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_7bce8283552532854aff5aeca68cfd1afcae4f19a96f4f0f9a36c4ae487d1db8", "typeString": "literal_string \"Must provide the last header of the closing difficulty period\"" } ], "id": 1515, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "8914:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1522, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8914:124:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1523, "nodeType": "ExpressionStatement", "src": "8914:124:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1530, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1525, "name": "_endHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1508, "src": "9069:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "32303135", "id": 1528, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9100:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2015_by_1", "typeString": "int_const 2015" }, "value": "2015" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2015_by_1", "typeString": "int_const 2015" } ], "expression": { "argumentTypes": null, "id": 1526, "name": "_startHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1500, "src": "9083:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1527, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "9083:16:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1529, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9083:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9069:36:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4d7573742070726f766964652065786163746c79203120646966666963756c747920706572696f64", "id": 1531, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9119:42:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_67c7c738a8cf54313c844b3267d6767c493dfc5af7d7c931a36a94b2d81f8e3e", "typeString": "literal_string \"Must provide exactly 1 difficulty period\"" }, "value": "Must provide exactly 1 difficulty period" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_67c7c738a8cf54313c844b3267d6767c493dfc5af7d7c931a36a94b2d81f8e3e", "typeString": "literal_string \"Must provide exactly 1 difficulty period\"" } ], "id": 1524, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "9048:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1532, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9048:114:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1533, "nodeType": "ExpressionStatement", "src": "9048:114:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1541, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1535, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "9193:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1536, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "9193:39:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1537, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9193:41:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1538, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "9238:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1539, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "9238:37:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1540, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9238:39:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9193:84:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "506572696f642068656164657220646966666963756c7469657320646f206e6f74206d61746368", "id": 1542, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9291:41:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c6456ff224d25c664f0efff0894b66e1bf05b6cd6fdb6e7d6c08db546c000032", "typeString": "literal_string \"Period header difficulties do not match\"" }, "value": "Period header difficulties do not match" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c6456ff224d25c664f0efff0894b66e1bf05b6cd6fdb6e7d6c08db546c000032", "typeString": "literal_string \"Period header difficulties do not match\"" } ], "id": 1534, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "9172:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1543, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9172:161:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1544, "nodeType": "ExpressionStatement", "src": "9172:161:3" }, { "assignments": [ 1546 ], "declarations": [ { "constant": false, "id": 1546, "name": "_newPeriodStart", "nodeType": "VariableDeclaration", "scope": 1614, "src": "9438:28:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1545, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "9438:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 1552, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1549, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9484:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, { "argumentTypes": null, "hexValue": "3830", "id": 1550, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9487:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1547, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1494, "src": "9469:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1548, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "slice", "nodeType": "MemberAccess", "referencedDeclaration": 4133, "src": "9469:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1551, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9469:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "9438:52:3" }, { "assignments": [ 1554 ], "declarations": [ { "constant": false, "id": 1554, "name": "_actualTarget", "nodeType": "VariableDeclaration", "scope": 1614, "src": "9500:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1553, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9500:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1558, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1555, "name": "_newPeriodStart", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1546, "src": "9524:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1556, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "9524:29:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1557, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9524:31:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "9500:55:3" }, { "assignments": [ 1560 ], "declarations": [ { "constant": false, "id": 1560, "name": "_expectedTarget", "nodeType": "VariableDeclaration", "scope": 1614, "src": "9565:23:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1559, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9565:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1573, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1563, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "9631:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1564, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "9631:35:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1565, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9631:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1566, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "9682:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1567, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTimestamp", "nodeType": "MemberAccess", "referencedDeclaration": 3850, "src": "9682:38:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint32)" } }, "id": 1568, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9682:40:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1569, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "9736:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1570, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTimestamp", "nodeType": "MemberAccess", "referencedDeclaration": 3850, "src": "9736:36:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint32)" } }, "id": 1571, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9736:38:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint32", "typeString": "uint32" }, { "typeIdentifier": "t_uint32", "typeString": "uint32" } ], "expression": { "argumentTypes": null, "id": 1561, "name": "BTCUtils", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4082, "src": "9591:8:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_BTCUtils_$4082_$", "typeString": "type(library BTCUtils)" } }, "id": 1562, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "retargetAlgorithm", "nodeType": "MemberAccess", "referencedDeclaration": 4081, "src": "9591:26:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256,uint256) pure returns (uint256)" } }, "id": 1572, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9591:193:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "9565:219:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1580, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1577, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1575, "name": "_actualTarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1554, "src": "9816:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "argumentTypes": null, "id": 1576, "name": "_expectedTarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1560, "src": "9832:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9816:31:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 1578, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "9815:33:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1579, "name": "_actualTarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1554, "src": "9852:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9815:50:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "496e76616c69642072657461726765742070726f7669646564", "id": 1581, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9879:27:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_88fb068d9d9bb4cb430555f47426ce90db05a008971325835664896da5946718", "typeString": "literal_string \"Invalid retarget provided\"" }, "value": "Invalid retarget provided" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_88fb068d9d9bb4cb430555f47426ce90db05a008971325835664896da5946718", "typeString": "literal_string \"Invalid retarget provided\"" } ], "id": 1574, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "9794:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1582, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9794:113:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1583, "nodeType": "ExpressionStatement", "src": "9794:113:3" }, { "assignments": [ 1585 ], "declarations": [ { "constant": false, "id": 1585, "name": "_oldDiff", "nodeType": "VariableDeclaration", "scope": 1614, "src": "10117:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1584, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10117:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1589, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1586, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "10136:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1587, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "10136:39:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1588, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10136:41:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "10117:60:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1601, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1592, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1590, "name": "prevEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1201, "src": "10191:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 1591, "name": "_oldDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1585, "src": "10208:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10191:25:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1600, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1593, "name": "_endHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1508, "src": "10220:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "32303136", "id": 1598, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10266:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1595, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "10245:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1594, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "10233:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1596, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10233:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1597, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4340, "src": "10233:32:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1599, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10233:38:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10220:51:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "10191:80:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1607, "nodeType": "IfStatement", "src": "10187:133:3", "trueBody": { "id": 1606, "nodeType": "Block", "src": "10273:47:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1604, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1602, "name": "prevEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1201, "src": "10285:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1603, "name": "_oldDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1585, "src": "10301:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10285:24:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1605, "nodeType": "ExpressionStatement", "src": "10285:24:3" } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1609, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "10403:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 1610, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1494, "src": "10424:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "hexValue": "74727565", "id": 1611, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "10434:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 1608, "name": "_addHeaders", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1454, "src": "10391:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_bool_$returns$_t_bool_$", "typeString": "function (bytes memory,bytes memory,bool) returns (bool)" } }, "id": 1612, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10391:48:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1498, "id": 1613, "nodeType": "Return", "src": "10384:55:3" } ] }, "documentation": "@notice Adds headers to storage, performs additional validation of retarget\n @dev Checks the retarget, the heights, and the linkage\n @param _oldPeriodStartHeader The first header in the difficulty period being closed\n @param _oldPeriodEndHeader The last header in the difficulty period being closed\n @param _headers A tightly-packed list of 80-byte Bitcoin headers\n @return True if successfully written, error otherwise", "id": 1615, "implemented": true, "kind": "function", "modifiers": [], "name": "_addHeadersWithRetarget", "nodeType": "FunctionDefinition", "parameters": { "id": 1495, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1490, "name": "_oldPeriodStartHeader", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8495:34:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1489, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8495:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1492, "name": "_oldPeriodEndHeader", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8539:32:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1491, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8539:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1494, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8581:21:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1493, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8581:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "8485:123:3" }, "returnParameters": { "id": 1498, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1497, "name": "", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8627:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1496, "name": "bool", "nodeType": "ElementaryTypeName", "src": "8627:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "8626:6:3" }, "scope": 2252, "src": "8453:1993:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1675, "nodeType": "Block", "src": "10753:387:3", "statements": [ { "assignments": [ 1623 ], "declarations": [ { "constant": false, "id": 1623, "name": "_height", "nodeType": "VariableDeclaration", "scope": 1675, "src": "10763:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1622, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10763:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1625, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1624, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10781:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "10763:19:3" }, { "assignments": [ 1627 ], "declarations": [ { "constant": false, "id": 1627, "name": "_current", "nodeType": "VariableDeclaration", "scope": 1675, "src": "10792:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1626, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "10792:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1629, "initialValue": { "argumentTypes": null, "id": 1628, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1617, "src": "10811:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "10792:26:3" }, { "body": { "id": 1669, "nodeType": "Block", "src": "10887:214:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1650, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1646, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1623, "src": "10901:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1647, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "10911:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1649, "indexExpression": { "argumentTypes": null, "id": 1648, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1627, "src": "10923:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10911:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10901:31:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1651, "nodeType": "ExpressionStatement", "src": "10901:31:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1654, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1652, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1623, "src": "10950:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1653, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10961:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "10950:12:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 1667, "nodeType": "Block", "src": "11037:54:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1664, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "11074:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 1662, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1623, "src": "11062:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1663, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "11062:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1665, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11062:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 1621, "id": 1666, "nodeType": "Return", "src": "11055:21:3" } ] }, "id": 1668, "nodeType": "IfStatement", "src": "10946:145:3", "trueBody": { "id": 1661, "nodeType": "Block", "src": "10964:67:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1659, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1655, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1627, "src": "10982:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1656, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "10993:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1658, "indexExpression": { "argumentTypes": null, "id": 1657, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1627, "src": "11007:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10993:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "10982:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1660, "nodeType": "ExpressionStatement", "src": "10982:34:3" } ] } } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1638, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1634, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "10848:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "id": 1637, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1635, "name": "HEIGHT_INTERVAL", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1183, "src": "10852:15:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 1636, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10870:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "10852:19:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "src": "10848:23:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1670, "initializationExpression": { "assignments": [ 1631 ], "declarations": [ { "constant": false, "id": 1631, "name": "i", "nodeType": "VariableDeclaration", "scope": 1670, "src": "10833:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1630, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10833:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1633, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1632, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10845:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "10833:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1644, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1639, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "10873:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1642, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10883:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1640, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "10877:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1641, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "10877:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1643, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10877:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10873:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1645, "nodeType": "ExpressionStatement", "src": "10873:12:3" }, "nodeType": "ForStatement", "src": "10828:273:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "556e6b6e6f776e20626c6f636b", "id": 1672, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "11117:15:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_2fe269f479def214aa4213fc5a3676b42da06f3fe6bec66494b82d7cb74589b0", "typeString": "literal_string \"Unknown block\"" }, "value": "Unknown block" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_2fe269f479def214aa4213fc5a3676b42da06f3fe6bec66494b82d7cb74589b0", "typeString": "literal_string \"Unknown block\"" } ], "id": 1671, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 5028, 5029 ], "referencedDeclaration": 5029, "src": "11110:6:3", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 1673, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11110:23:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1674, "nodeType": "ExpressionStatement", "src": "11110:23:3" } ] }, "documentation": "@notice Finds the height of a header by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header", "id": 1676, "implemented": true, "kind": "function", "modifiers": [], "name": "_findHeight", "nodeType": "FunctionDefinition", "parameters": { "id": 1618, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1617, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1676, "src": "10704:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1616, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "10704:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "10703:17:3" }, "returnParameters": { "id": 1621, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1620, "name": "", "nodeType": "VariableDeclaration", "scope": 1676, "src": "10744:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1619, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10744:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "10743:9:3" }, "scope": 2252, "src": "10683:457:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1687, "nodeType": "Block", "src": "11467:44:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1684, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1678, "src": "11496:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1683, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "11484:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1685, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11484:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 1682, "id": 1686, "nodeType": "Return", "src": "11477:27:3" } ] }, "documentation": "@notice Finds the height of a header by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header, or error if unknown", "id": 1688, "implemented": true, "kind": "function", "modifiers": [], "name": "findHeight", "nodeType": "FunctionDefinition", "parameters": { "id": 1679, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1678, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1688, "src": "11418:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1677, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11418:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "11417:17:3" }, "returnParameters": { "id": 1682, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1681, "name": "", "nodeType": "VariableDeclaration", "scope": 1688, "src": "11458:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1680, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11458:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "11457:9:3" }, "scope": 2252, "src": "11398:113:3", "stateMutability": "view", "superFunction": 1101, "visibility": "external" }, { "body": { "id": 1734, "nodeType": "Block", "src": "11859:244:3", "statements": [ { "assignments": [ 1698 ], "declarations": [ { "constant": false, "id": 1698, "name": "_current", "nodeType": "VariableDeclaration", "scope": 1734, "src": "11869:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1697, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11869:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1700, "initialValue": { "argumentTypes": null, "id": 1699, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1690, "src": "11888:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "11869:26:3" }, { "body": { "id": 1721, "nodeType": "Block", "src": "11952:59:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1719, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1715, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "11966:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1716, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "11977:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1718, "indexExpression": { "argumentTypes": null, "id": 1717, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "11991:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "11977:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "11966:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1720, "nodeType": "ExpressionStatement", "src": "11966:34:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1707, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1705, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1702, "src": "11925:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 1706, "name": "_offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1692, "src": "11929:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "11925:11:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1722, "initializationExpression": { "assignments": [ 1702 ], "declarations": [ { "constant": false, "id": 1702, "name": "i", "nodeType": "VariableDeclaration", "scope": 1722, "src": "11910:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1701, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11910:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1704, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1703, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11922:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "11910:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1713, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1708, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1702, "src": "11938:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1711, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11948:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1709, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1702, "src": "11942:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1710, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "11942:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1712, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11942:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "11938:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1714, "nodeType": "ExpressionStatement", "src": "11938:12:3" }, "nodeType": "ForStatement", "src": "11905:106:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1728, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1724, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "12028:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1726, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "12048:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1725, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12040:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1727, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12040:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "12028:22:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "556e6b6e6f776e20616e636573746f72", "id": 1729, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "12052:18:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c461b76bf1480a8b20105a19184a1758b87ce3c97e130df422cacaf91904c3a2", "typeString": "literal_string \"Unknown ancestor\"" }, "value": "Unknown ancestor" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c461b76bf1480a8b20105a19184a1758b87ce3c97e130df422cacaf91904c3a2", "typeString": "literal_string \"Unknown ancestor\"" } ], "id": 1723, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "12020:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1730, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12020:51:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1731, "nodeType": "ExpressionStatement", "src": "12020:51:3" }, { "expression": { "argumentTypes": null, "id": 1732, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "12088:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 1696, "id": 1733, "nodeType": "Return", "src": "12081:15:3" } ] }, "documentation": "@notice Finds an ancestor for a block by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header, or error if unknown", "id": 1735, "implemented": true, "kind": "function", "modifiers": [], "name": "_findAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1693, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1690, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1735, "src": "11793:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1689, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11793:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1692, "name": "_offset", "nodeType": "VariableDeclaration", "scope": 1735, "src": "11810:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1691, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11810:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "11792:34:3" }, "returnParameters": { "id": 1696, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1695, "name": "", "nodeType": "VariableDeclaration", "scope": 1735, "src": "11850:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1694, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11850:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "11849:9:3" }, "scope": 2252, "src": "11770:333:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1749, "nodeType": "Block", "src": "12450:55:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1745, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1737, "src": "12481:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1746, "name": "_offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1739, "src": "12490:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1744, "name": "_findAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1735, "src": "12467:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_uint256_$returns$_t_bytes32_$", "typeString": "function (bytes32,uint256) view returns (bytes32)" } }, "id": 1747, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12467:31:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 1743, "id": 1748, "nodeType": "Return", "src": "12460:38:3" } ] }, "documentation": "@notice Finds an ancestor for a block by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header, or error if unknown", "id": 1750, "implemented": true, "kind": "function", "modifiers": [], "name": "findAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1740, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1737, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1750, "src": "12384:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1736, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "12384:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1739, "name": "_offset", "nodeType": "VariableDeclaration", "scope": 1750, "src": "12401:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1738, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12401:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "12383:34:3" }, "returnParameters": { "id": 1743, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1742, "name": "", "nodeType": "VariableDeclaration", "scope": 1750, "src": "12441:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1741, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "12441:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "12440:9:3" }, "scope": 2252, "src": "12362:143:3", "stateMutability": "view", "superFunction": 1110, "visibility": "external" }, { "body": { "id": 1796, "nodeType": "Block", "src": "13066:332:3", "statements": [ { "assignments": [ 1762 ], "declarations": [ { "constant": false, "id": 1762, "name": "_current", "nodeType": "VariableDeclaration", "scope": 1796, "src": "13076:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1761, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13076:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1764, "initialValue": { "argumentTypes": null, "id": 1763, "name": "_descendant", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1754, "src": "13095:11:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "13076:30:3" }, { "body": { "id": 1792, "nodeType": "Block", "src": "13227:143:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1781, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1779, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1762, "src": "13245:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1780, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "13257:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "13245:21:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1785, "nodeType": "IfStatement", "src": "13241:71:3", "trueBody": { "id": 1784, "nodeType": "Block", "src": "13268:44:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1782, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "13293:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1760, "id": 1783, "nodeType": "Return", "src": "13286:11:3" } ] } }, { "expression": { "argumentTypes": null, "id": 1790, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1786, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1762, "src": "13325:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1787, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "13336:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1789, "indexExpression": { "argumentTypes": null, "id": 1788, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1762, "src": "13350:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "13336:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "13325:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1791, "nodeType": "ExpressionStatement", "src": "13325:34:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1771, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1769, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1766, "src": "13201:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 1770, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1756, "src": "13205:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "13201:10:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1793, "initializationExpression": { "assignments": [ 1766 ], "declarations": [ { "constant": false, "id": 1766, "name": "i", "nodeType": "VariableDeclaration", "scope": 1793, "src": "13186:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1765, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "13186:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1768, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1767, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "13198:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "13186:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1777, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1772, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1766, "src": "13213:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1775, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "13223:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1773, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1766, "src": "13217:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1774, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "13217:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1776, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "13217:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "13213:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1778, "nodeType": "ExpressionStatement", "src": "13213:12:3" }, "nodeType": "ForStatement", "src": "13181:189:3" }, { "expression": { "argumentTypes": null, "hexValue": "66616c7365", "id": 1794, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "13386:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 1760, "id": 1795, "nodeType": "Return", "src": "13379:12:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective ancestor\n @param _descendant The descendant to check\n @param _limit The maximum number of blocks to check\n @return true if ancestor is at most limit blocks lower than descendant, otherwise false", "id": 1797, "implemented": true, "kind": "function", "modifiers": [], "name": "_isAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1757, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1752, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1797, "src": "12981:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1751, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "12981:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1754, "name": "_descendant", "nodeType": "VariableDeclaration", "scope": 1797, "src": "13000:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1753, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13000:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1756, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1797, "src": "13021:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1755, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "13021:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "12980:56:3" }, "returnParameters": { "id": 1760, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1759, "name": "", "nodeType": "VariableDeclaration", "scope": 1797, "src": "13060:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1758, "name": "bool", "nodeType": "ElementaryTypeName", "src": "13060:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "13059:6:3" }, "scope": 2252, "src": "12960:438:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1814, "nodeType": "Block", "src": "13958:67:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1809, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1799, "src": "13987:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1810, "name": "_descendant", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1801, "src": "13998:11:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1811, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1803, "src": "14011:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1808, "name": "_isAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1797, "src": "13975:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes32,uint256) view returns (bool)" } }, "id": 1812, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "13975:43:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1807, "id": 1813, "nodeType": "Return", "src": "13968:50:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective ancestor\n @param _descendant The descendant to check\n @param _limit The maximum number of blocks to check\n @return true if ancestor is at most limit blocks lower than descendant, otherwise false", "id": 1815, "implemented": true, "kind": "function", "modifiers": [], "name": "isAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1804, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1799, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13873:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1798, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13873:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1801, "name": "_descendant", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13892:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1800, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13892:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1803, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13913:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1802, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "13913:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "13872:56:3" }, "returnParameters": { "id": 1807, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1806, "name": "", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13952:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1805, "name": "bool", "nodeType": "ElementaryTypeName", "src": "13952:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "13951:6:3" }, "scope": 2252, "src": "13853:172:3", "stateMutability": "view", "superFunction": 1121, "visibility": "external" }, { "body": { "id": 1910, "nodeType": "Block", "src": "14791:1023:3", "statements": [ { "assignments": [ 1829 ], "declarations": [ { "constant": false, "id": 1829, "name": "_newBestDigest", "nodeType": "VariableDeclaration", "scope": 1910, "src": "14801:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1828, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "14801:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1833, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1830, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1821, "src": "14826:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "14826:16:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1832, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14826:18:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "14801:43:3" }, { "assignments": [ 1835 ], "declarations": [ { "constant": false, "id": 1835, "name": "_currentBestDigest", "nodeType": "VariableDeclaration", "scope": 1910, "src": "14854:26:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1834, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "14854:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1839, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1836, "name": "_currentBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1819, "src": "14883:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1837, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "14883:20:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1838, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14883:22:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "14854:51:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1843, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1841, "name": "_currentBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1835, "src": "14923:18:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1842, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "14945:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "14923:37:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "50617373656420696e2062657374206973206e6f742062657374206b6e6f776e", "id": 1844, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "14962:34:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_08d40782ec860529d1a49d4deccf329d686c48a4affb967e8f3fe896477d9012", "typeString": "literal_string \"Passed in best is not best known\"" }, "value": "Passed in best is not best known" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_08d40782ec860529d1a49d4deccf329d686c48a4affb967e8f3fe896477d9012", "typeString": "literal_string \"Passed in best is not best known\"" } ], "id": 1840, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "14915:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1845, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14915:82:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1846, "nodeType": "ExpressionStatement", "src": "14915:82:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1854, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1848, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "15028:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1850, "indexExpression": { "argumentTypes": null, "id": 1849, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15042:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "15028:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1852, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "15069:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1851, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "15061:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1853, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15061:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15028:43:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4e6577206265737420697320756e6b6e6f776e", "id": 1855, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15085:21:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_21175d40c2ebef79a732817277d464b099ad41722534bb4c1a81ec30c878b42d", "typeString": "literal_string \"New best is unknown\"" }, "value": "New best is unknown" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_21175d40c2ebef79a732817277d464b099ad41722534bb4c1a81ec30c878b42d", "typeString": "literal_string \"New best is unknown\"" } ], "id": 1847, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "15007:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1856, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15007:100:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1857, "nodeType": "ExpressionStatement", "src": "15007:100:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1860, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15160:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1861, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "15171:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1862, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15188:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1863, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1823, "src": "15204:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1859, "name": "_isMostRecentAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2035, "src": "15138:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes32,bytes32,uint256) view returns (bool)" } }, "id": 1864, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15138:73:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416e636573746f72206d75737420626520686561766965737420636f6d6d6f6e20616e636573746f72", "id": 1865, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15225:43:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_fcaf5361cb1b11aa6567d172fd21d0d1e008d17e89623abf194305ef538c3052", "typeString": "literal_string \"Ancestor must be heaviest common ancestor\"" }, "value": "Ancestor must be heaviest common ancestor" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_fcaf5361cb1b11aa6567d172fd21d0d1e008d17e89623abf194305ef538c3052", "typeString": "literal_string \"Ancestor must be heaviest common ancestor\"" } ], "id": 1858, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "15117:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15117:152:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1867, "nodeType": "ExpressionStatement", "src": "15117:152:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1875, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1870, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15322:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1871, "name": "_currentBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1819, "src": "15333:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 1872, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1821, "src": "15347:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1869, "name": "_heaviestFromAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2193, "src": "15300:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes32,bytes memory,bytes memory) view returns (bytes32)" } }, "id": 1873, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15300:56:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1874, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15360:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15300:74:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4e65772062657374206861736820646f6573206e6f742068617665206d6f726520776f726b207468616e2070726576696f7573", "id": 1876, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15388:53:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_9fd7a9403f83332e39cd942cb934228aad1aa94f9f120f93fcbad363acc5034e", "typeString": "literal_string \"New best hash does not have more work than previous\"" }, "value": "New best hash does not have more work than previous" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_9fd7a9403f83332e39cd942cb934228aad1aa94f9f120f93fcbad363acc5034e", "typeString": "literal_string \"New best hash does not have more work than previous\"" } ], "id": 1868, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "15279:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1877, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15279:163:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1878, "nodeType": "ExpressionStatement", "src": "15279:163:3" }, { "expression": { "argumentTypes": null, "id": 1881, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1879, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "15453:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1880, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15471:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15453:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1882, "nodeType": "ExpressionStatement", "src": "15453:32:3" }, { "expression": { "argumentTypes": null, "id": 1885, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1883, "name": "lastReorgCommonAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1189, "src": "15495:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1884, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15521:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15495:35:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1886, "nodeType": "ExpressionStatement", "src": "15495:35:3" }, { "assignments": [ 1888 ], "declarations": [ { "constant": false, "id": 1888, "name": "_newDiff", "nodeType": "VariableDeclaration", "scope": 1910, "src": "15541:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1887, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15541:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1892, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1889, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1821, "src": "15560:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1890, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "15560:26:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1891, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15560:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "15541:47:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1895, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1893, "name": "_newDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1888, "src": "15602:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 1894, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "15614:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "15602:28:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1901, "nodeType": "IfStatement", "src": "15598:84:3", "trueBody": { "id": 1900, "nodeType": "Block", "src": "15632:50:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1898, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1896, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "15644:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1897, "name": "_newDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1888, "src": "15663:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "15644:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1899, "nodeType": "ExpressionStatement", "src": "15644:27:3" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1903, "name": "_currentBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1835, "src": "15716:18:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1904, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15748:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1905, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15776:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1902, "name": "Reorg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1056, "src": "15697:5:3", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_bytes32_$_t_bytes32_$returns$__$", "typeString": "function (bytes32,bytes32,bytes32)" } }, "id": 1906, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15697:89:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1907, "nodeType": "EmitStatement", "src": "15692:94:3" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1908, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "15803:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1827, "id": 1909, "nodeType": "Return", "src": "15796:11:3" } ] }, "documentation": "@notice Gives a starting point for the relay\n @dev We don't check this AT ALL really. Don't use relays with bad genesis\n @param _ancestor The digest of the most recent common ancestor\n @param _currentBest The 80-byte header referenced by bestKnownDigest\n @param _newBest The 80-byte header to mark as the new best\n @param _limit Limit the amount of traversal of the chain\n @return True if successfully updates bestKnownDigest, error otherwise", "id": 1911, "implemented": true, "kind": "function", "modifiers": [], "name": "_markNewHeaviest", "nodeType": "FunctionDefinition", "parameters": { "id": 1824, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1817, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14653:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1816, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "14653:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1819, "name": "_currentBest", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14680:25:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1818, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "14680:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1821, "name": "_newBest", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14715:21:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1820, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "14715:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1823, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14746:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1822, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14746:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "14643:123:3" }, "returnParameters": { "id": 1827, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1826, "name": "", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14785:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1825, "name": "bool", "nodeType": "ElementaryTypeName", "src": "14785:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "14784:6:3" }, "scope": 2252, "src": "14618:1196:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1931, "nodeType": "Block", "src": "16583:83:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1925, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1913, "src": "16617:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1926, "name": "_currentBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1915, "src": "16628:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1927, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1917, "src": "16642:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1928, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1919, "src": "16652:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1924, "name": "_markNewHeaviest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1911, "src": "16600:16:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes memory,bytes memory,uint256) returns (bool)" } }, "id": 1929, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16600:59:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1923, "id": 1930, "nodeType": "Return", "src": "16593:66:3" } ] }, "documentation": "@notice Gives a starting point for the relay\n @dev We don't check this AT ALL really. Don't use relays with bad genesis\n @param _ancestor The digest of the most recent common ancestor\n @param _currentBest The 80-byte header referenced by bestKnownDigest\n @param _newBest The 80-byte header to mark as the new best\n @param _limit Limit the amount of traversal of the chain\n @return True if successfully updates bestKnownDigest, error otherwise", "id": 1932, "implemented": true, "kind": "function", "modifiers": [], "name": "markNewHeaviest", "nodeType": "FunctionDefinition", "parameters": { "id": 1920, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1913, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16441:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1912, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "16441:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1915, "name": "_currentBest", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16468:27:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1914, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "16468:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1917, "name": "_newBest", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16505:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1916, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "16505:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1919, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16538:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1918, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16538:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "16431:127:3" }, "returnParameters": { "id": 1923, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1922, "name": "", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16577:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1921, "name": "bool", "nodeType": "ElementaryTypeName", "src": "16577:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "16576:6:3" }, "scope": 2252, "src": "16407:259:3", "stateMutability": "nonpayable", "superFunction": 1165, "visibility": "external" }, { "body": { "id": 2034, "nodeType": "Block", "src": "17317:918:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1951, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1947, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1945, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17362:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1946, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1936, "src": "17375:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17362:18:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1950, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1948, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17384:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1949, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1938, "src": "17397:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17384:19:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "17362:41:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1955, "nodeType": "IfStatement", "src": "17358:83:3", "trueBody": { "id": 1954, "nodeType": "Block", "src": "17405:36:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1952, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "17426:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1944, "id": 1953, "nodeType": "Return", "src": "17419:11:3" } ] } }, { "assignments": [ 1957 ], "declarations": [ { "constant": false, "id": 1957, "name": "_leftCurrent", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17451:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1956, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17451:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1959, "initialValue": { "argumentTypes": null, "id": 1958, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1936, "src": "17474:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17451:28:3" }, { "assignments": [ 1961 ], "declarations": [ { "constant": false, "id": 1961, "name": "_rightCurrent", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17489:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1960, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17489:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1963, "initialValue": { "argumentTypes": null, "id": 1962, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1938, "src": "17513:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17489:30:3" }, { "assignments": [ 1965 ], "declarations": [ { "constant": false, "id": 1965, "name": "_leftPrev", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17529:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1964, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17529:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1967, "initialValue": { "argumentTypes": null, "id": 1966, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1936, "src": "17549:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17529:25:3" }, { "assignments": [ 1969 ], "declarations": [ { "constant": false, "id": 1969, "name": "_rightPrev", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17564:18:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1968, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17564:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1971, "initialValue": { "argumentTypes": null, "id": 1970, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1938, "src": "17585:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17564:27:3" }, { "body": { "id": 2016, "nodeType": "Block", "src": "17647:368:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1988, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1986, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17665:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 1987, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17678:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17665:22:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2000, "nodeType": "IfStatement", "src": "17661:163:3", "trueBody": { "id": 1999, "nodeType": "Block", "src": "17689:135:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1991, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1989, "name": "_leftCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1957, "src": "17707:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1990, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17722:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17707:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1992, "nodeType": "ExpressionStatement", "src": "17707:24:3" }, { "expression": { "argumentTypes": null, "id": 1997, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1993, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17759:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1994, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "17771:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1996, "indexExpression": { "argumentTypes": null, "id": 1995, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17785:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17771:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17759:36:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1998, "nodeType": "ExpressionStatement", "src": "17759:36:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 2003, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2001, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17841:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 2002, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17855:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17841:23:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2015, "nodeType": "IfStatement", "src": "17837:168:3", "trueBody": { "id": 2014, "nodeType": "Block", "src": "17866:139:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2006, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 2004, "name": "_rightCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1961, "src": "17884:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 2005, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17900:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17884:26:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2007, "nodeType": "ExpressionStatement", "src": "17884:26:3" }, { "expression": { "argumentTypes": null, "id": 2012, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 2008, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17938:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 2009, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "17951:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 2011, "indexExpression": { "argumentTypes": null, "id": 2010, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17965:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17951:25:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17938:38:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2013, "nodeType": "ExpressionStatement", "src": "17938:38:3" } ] } } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1978, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1976, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "17621:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 1977, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1940, "src": "17625:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "17621:10:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2017, "initializationExpression": { "assignments": [ 1973 ], "declarations": [ { "constant": false, "id": 1973, "name": "i", "nodeType": "VariableDeclaration", "scope": 2017, "src": "17606:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1972, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "17606:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1975, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1974, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17618:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "17606:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1984, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1979, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "17633:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1982, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17643:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1980, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "17637:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1981, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "17637:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1983, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17637:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "17633:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1985, "nodeType": "ExpressionStatement", "src": "17633:12:3" }, "nodeType": "ForStatement", "src": "17602:413:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 2020, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2018, "name": "_leftCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1957, "src": "18028:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 2019, "name": "_rightCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1961, "src": "18044:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "18028:29:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2024, "nodeType": "IfStatement", "src": "18024:50:3", "trueBody": { "id": 2023, "nodeType": "Block", "src": "18059:15:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "66616c7365", "id": 2021, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "18067:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 1944, "id": 2022, "nodeType": "Return", "src": "18060:12:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 2027, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2025, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "18136:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 2026, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "18149:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "18136:23:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2031, "nodeType": "IfStatement", "src": "18132:44:3", "trueBody": { "id": 2030, "nodeType": "Block", "src": "18161:15:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "66616c7365", "id": 2028, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "18169:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 1944, "id": 2029, "nodeType": "Return", "src": "18162:12:3" } ] } }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 2032, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "18224:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1944, "id": 2033, "nodeType": "Return", "src": "18217:11:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @param _limit The maximum number of blocks to check\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2035, "implemented": true, "kind": "function", "modifiers": [], "name": "_isMostRecentAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1941, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1934, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17193:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1933, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17193:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1936, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17220:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1935, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17220:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1938, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17243:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1937, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17243:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1940, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17267:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1939, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "17267:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "17183:104:3" }, "returnParameters": { "id": 1944, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1943, "name": "", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17311:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1942, "name": "bool", "nodeType": "ElementaryTypeName", "src": "17311:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "17310:6:3" }, "scope": 2252, "src": "17153:1082:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2055, "nodeType": "Block", "src": "18885:79:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2049, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2037, "src": "18924:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2050, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2039, "src": "18935:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2051, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2041, "src": "18942:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2052, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2043, "src": "18950:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2048, "name": "_isMostRecentAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2035, "src": "18902:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes32,bytes32,uint256) view returns (bool)" } }, "id": 2053, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18902:55:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 2047, "id": 2054, "nodeType": "Return", "src": "18895:62:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @param _limit The maximum number of blocks to check\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2056, "implemented": true, "kind": "function", "modifiers": [], "name": "isMostRecentAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2044, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2037, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18761:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2036, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "18761:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2039, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18788:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2038, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "18788:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2041, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18811:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2040, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "18811:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2043, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18835:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2042, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "18835:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "18751:104:3" }, "returnParameters": { "id": 2047, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2046, "name": "", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18879:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 2045, "name": "bool", "nodeType": "ElementaryTypeName", "src": "18879:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "18878:6:3" }, "scope": 2252, "src": "18722:242:3", "stateMutability": "view", "superFunction": 1069, "visibility": "external" }, { "body": { "id": 2192, "nodeType": "Block", "src": "19520:1615:3", "statements": [ { "assignments": [ 2068 ], "declarations": [ { "constant": false, "id": 2068, "name": "_ancestorHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19530:23:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2067, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19530:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2072, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2070, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2058, "src": "19568:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 2069, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "19556:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 2071, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19556:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19530:48:3" }, { "assignments": [ 2074 ], "declarations": [ { "constant": false, "id": 2074, "name": "_leftHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19588:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2073, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19588:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2080, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2076, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "19622:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2077, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "19622:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2078, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19622:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 2075, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "19610:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 2079, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19610:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19588:50:3" }, { "assignments": [ 2082 ], "declarations": [ { "constant": false, "id": 2082, "name": "_rightHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19648:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2081, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19648:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2088, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2084, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "19683:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2085, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "19683:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2086, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19683:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 2083, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "19671:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 2087, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19671:29:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19648:52:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2096, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2092, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2090, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "19732:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 2091, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "19747:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "19732:30:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2095, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2093, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "19766:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 2094, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "19782:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "19766:31:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "19732:65:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "412064657363656e64616e74206865696768742069732062656c6f772074686520616e636573746f7220686569676874", "id": 2097, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "19811:50:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_b58061f6326ff3d0324de253af04d745211e5ff4898fed03b468cbd3387ef7f2", "typeString": "literal_string \"A descendant height is below the ancestor height\"" }, "value": "A descendant height is below the ancestor height" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b58061f6326ff3d0324de253af04d745211e5ff4898fed03b468cbd3387ef7f2", "typeString": "literal_string \"A descendant height is below the ancestor height\"" } ], "id": 2089, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "19711:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 2098, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19711:151:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2099, "nodeType": "ExpressionStatement", "src": "19711:151:3" }, { "assignments": [ 2101 ], "declarations": [ { "constant": false, "id": 2101, "name": "_nextPeriodStartHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19970:30:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2100, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19970:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2111, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2109, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2107, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "20033:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 2108, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20051:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "20033:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "32303136", "id": 2104, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20023:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" } ], "expression": { "argumentTypes": null, "id": 2102, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "20003:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2103, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "20003:19:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2105, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20003:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2106, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4340, "src": "20003:29:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2110, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20003:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19970:86:3" }, { "assignments": [ 2113 ], "declarations": [ { "constant": false, "id": 2113, "name": "_leftInPeriod", "nodeType": "VariableDeclaration", "scope": 2192, "src": "20066:18:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 2112, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20066:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 2117, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2116, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2114, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "20087:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 2115, "name": "_nextPeriodStartHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2101, "src": "20101:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20087:36:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "VariableDeclarationStatement", "src": "20066:57:3" }, { "assignments": [ 2119 ], "declarations": [ { "constant": false, "id": 2119, "name": "_rightInPeriod", "nodeType": "VariableDeclaration", "scope": 2192, "src": "20133:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 2118, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20133:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 2123, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2122, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2120, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "20155:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 2121, "name": "_nextPeriodStartHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2101, "src": "20170:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20155:37:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "VariableDeclarationStatement", "src": "20133:59:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2127, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2125, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20532:14:3", "subExpression": { "argumentTypes": null, "id": 2124, "name": "_leftInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2113, "src": "20533:13:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 2126, "name": "_rightInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2119, "src": "20550:14:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "20532:32:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2133, "nodeType": "IfStatement", "src": "20528:63:3", "trueBody": { "id": 2132, "nodeType": "Block", "src": "20566:25:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2128, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "20574:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2129, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20574:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2130, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20574:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2131, "nodeType": "Return", "src": "20567:22:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2137, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2134, "name": "_leftInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2113, "src": "20604:13:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 2136, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20621:15:3", "subExpression": { "argumentTypes": null, "id": 2135, "name": "_rightInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2119, "src": "20622:14:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "20604:32:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2143, "nodeType": "IfStatement", "src": "20600:64:3", "trueBody": { "id": 2142, "nodeType": "Block", "src": "20638:26:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2138, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "20646:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2139, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20646:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20646:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2141, "nodeType": "Return", "src": "20639:23:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2146, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2144, "name": "_leftInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2113, "src": "20677:13:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 2145, "name": "_rightInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2119, "src": "20694:14:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "20677:31:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 2190, "nodeType": "Block", "src": "20812:317:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2178, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2164, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "20901:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2165, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "20901:23:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 2166, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20901:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2161, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2159, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "20877:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 2160, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20891:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "20877:18:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 2162, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "20876:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2163, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "mul", "nodeType": "MemberAccess", "referencedDeclaration": 4305, "src": "20876:24:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2167, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20876:51:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 2168, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "20875:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2174, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "20973:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2175, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "20973:24:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 2176, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20973:26:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2171, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2169, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "20948:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 2170, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20963:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "20948:19:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 2172, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "20947:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2173, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "mul", "nodeType": "MemberAccess", "referencedDeclaration": 4305, "src": "20947:25:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2177, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20947:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20875:125:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 2188, "nodeType": "Block", "src": "21064:55:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2184, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "21089:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2185, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "21089:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2186, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21089:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2187, "nodeType": "Return", "src": "21082:22:3" } ] }, "id": 2189, "nodeType": "IfStatement", "src": "20871:248:3", "trueBody": { "id": 2183, "nodeType": "Block", "src": "21002:56:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2179, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "21027:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2180, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "21027:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2181, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21027:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2182, "nodeType": "Return", "src": "21020:23:3" } ] } } ] }, "id": 2191, "nodeType": "IfStatement", "src": "20673:456:3", "trueBody": { "id": 2158, "nodeType": "Block", "src": "20710:96:3", "statements": [ { "expression": { "argumentTypes": null, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2149, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2147, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "20731:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 2148, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "20746:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20731:27:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2153, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "20779:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2154, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20779:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2155, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20779:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2156, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "Conditional", "src": "20731:64:3", "trueExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2150, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "20761:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2151, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20761:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2152, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20761:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2157, "nodeType": "Return", "src": "20724:71:3" } ] } } ] }, "documentation": "@notice Decides which header is heaviest from the ancestor\n @dev Does not support reorgs above 2017 blocks (:\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2193, "implemented": true, "kind": "function", "modifiers": [], "name": "_heaviestFromAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2063, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2058, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19407:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2057, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "19407:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2060, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19434:18:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2059, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "19434:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2062, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19462:19:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2061, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "19462:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "19397:90:3" }, "returnParameters": { "id": 2066, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2065, "name": "", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19511:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2064, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "19511:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "19510:9:3" }, "scope": 2252, "src": "19367:1768:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2210, "nodeType": "Block", "src": "21694:71:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2205, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2195, "src": "21733:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2206, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2197, "src": "21744:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 2207, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2199, "src": "21751:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "id": 2204, "name": "_heaviestFromAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2193, "src": "21711:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes32,bytes memory,bytes memory) view returns (bytes32)" } }, "id": 2208, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21711:47:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2203, "id": 2209, "nodeType": "Return", "src": "21704:54:3" } ] }, "documentation": "@notice Decides which header is heaviest from the ancestor\n @dev Does not support reorgs above 2017 blocks (:\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2211, "implemented": true, "kind": "function", "modifiers": [], "name": "heaviestFromAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2200, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2195, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21577:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2194, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "21577:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2197, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21604:20:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 2196, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "21604:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2199, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21634:21:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 2198, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "21634:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "21567:94:3" }, "returnParameters": { "id": 2203, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2202, "name": "", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21685:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2201, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "21685:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "21684:9:3" }, "scope": 2252, "src": "21538:227:3", "stateMutability": "view", "superFunction": 1132, "visibility": "external" }, { "body": { "id": 2218, "nodeType": "Block", "src": "22023:38:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2216, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "22038:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 2215, "id": 2217, "nodeType": "Return", "src": "22031:23:3" } ] }, "documentation": "@notice Getter for currentEpochDiff\n @dev This is updated when a new heavist header has a new diff\n @return The difficulty of the bestKnownDigest", "id": 2219, "implemented": true, "kind": "function", "modifiers": [], "name": "getCurrentEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 2212, "nodeType": "ParameterList", "parameters": [], "src": "21988:2:3" }, "returnParameters": { "id": 2215, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2214, "name": "", "nodeType": "VariableDeclaration", "scope": 2219, "src": "22014:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2213, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "22014:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "22013:9:3" }, "scope": 2252, "src": "21954:107:3", "stateMutability": "view", "superFunction": 1074, "visibility": "external" }, { "body": { "id": 2226, "nodeType": "Block", "src": "22307:35:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2224, "name": "prevEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1201, "src": "22322:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 2223, "id": 2225, "nodeType": "Return", "src": "22315:20:3" } ] }, "documentation": "@notice Getter for prevEpochDiff\n @dev This is updated when a difficulty change is accepted\n @return The difficulty of the previous epoch", "id": 2227, "implemented": true, "kind": "function", "modifiers": [], "name": "getPrevEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 2220, "nodeType": "ParameterList", "parameters": [], "src": "22272:2:3" }, "returnParameters": { "id": 2223, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2222, "name": "", "nodeType": "VariableDeclaration", "scope": 2227, "src": "22298:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2221, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "22298:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "22297:9:3" }, "scope": 2252, "src": "22241:101:3", "stateMutability": "view", "superFunction": 1079, "visibility": "external" }, { "body": { "id": 2234, "nodeType": "Block", "src": "22566:36:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2232, "name": "relayGenesis", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1185, "src": "22583:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2231, "id": 2233, "nodeType": "Return", "src": "22576:19:3" } ] }, "documentation": "@notice Getter for relayGenesis\n @dev This is an initialization parameter\n @return The hash of the first block of the relay", "id": 2235, "implemented": true, "kind": "function", "modifiers": [], "name": "getRelayGenesis", "nodeType": "FunctionDefinition", "parameters": { "id": 2228, "nodeType": "ParameterList", "parameters": [], "src": "22533:2:3" }, "returnParameters": { "id": 2231, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2230, "name": "", "nodeType": "VariableDeclaration", "scope": 2235, "src": "22557:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2229, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "22557:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "22556:9:3" }, "scope": 2252, "src": "22509:93:3", "stateMutability": "view", "superFunction": 1084, "visibility": "public" }, { "body": { "id": 2242, "nodeType": "Block", "src": "22838:39:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2240, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "22855:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2239, "id": 2241, "nodeType": "Return", "src": "22848:22:3" } ] }, "documentation": "@notice Getter for bestKnownDigest\n @dev This updated only by calling markNewHeaviest\n @return The hash of the best marked chain tip", "id": 2243, "implemented": true, "kind": "function", "modifiers": [], "name": "getBestKnownDigest", "nodeType": "FunctionDefinition", "parameters": { "id": 2236, "nodeType": "ParameterList", "parameters": [], "src": "22805:2:3" }, "returnParameters": { "id": 2239, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2238, "name": "", "nodeType": "VariableDeclaration", "scope": 2243, "src": "22829:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2237, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "22829:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "22828:9:3" }, "scope": 2252, "src": "22778:99:3", "stateMutability": "view", "superFunction": 1089, "visibility": "public" }, { "body": { "id": 2250, "nodeType": "Block", "src": "23139:47:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2248, "name": "lastReorgCommonAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1189, "src": "23156:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2247, "id": 2249, "nodeType": "Return", "src": "23149:30:3" } ] }, "documentation": "@notice Getter for relayGenesis\n @dev This is updated only by calling markNewHeaviest\n @return The hash of the shared ancestor of the most recent fork", "id": 2251, "implemented": true, "kind": "function", "modifiers": [], "name": "getLastReorgCommonAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2244, "nodeType": "ParameterList", "parameters": [], "src": "23106:2:3" }, "returnParameters": { "id": 2247, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2246, "name": "", "nodeType": "VariableDeclaration", "scope": 2251, "src": "23130:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2245, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "23130:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "23129:9:3" }, "scope": 2252, "src": "23071:115:3", "stateMutability": "view", "superFunction": 1094, "visibility": "public" } ], "scope": 2253, "src": "2004:21184:3" } ], "src": "0:23189:3" }, "legacyAST": { "absolutePath": "/home/james/devel/relays/solidity/contracts/Relay.sol", "exportedSymbols": { "IRelay": [ 1166 ], "Relay": [ 2252 ] }, "id": 2253, "nodeType": "SourceUnit", "nodes": [ { "id": 1034, "literals": [ "solidity", "^", "0.5", ".10" ], "nodeType": "PragmaDirective", "src": "0:24:3" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/SafeMath.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/SafeMath.sol", "id": 1036, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 4367, "src": "88:74:3", "symbolAliases": [ { "foreign": 1035, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol", "id": 1038, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 4270, "src": "163:74:3", "symbolAliases": [ { "foreign": 1037, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol", "id": 1040, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 4083, "src": "238:74:3", "symbolAliases": [ { "foreign": 1039, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/ValidateSPV.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/ValidateSPV.sol", "id": 1042, "nodeType": "ImportDirective", "scope": 2253, "sourceUnit": 5009, "src": "313:80:3", "symbolAliases": [ { "foreign": 1041, "local": null } ], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "interface", "documentation": null, "fullyImplemented": false, "id": 1166, "linearizedBaseContracts": [ 1166 ], "name": "IRelay", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": null, "id": 1048, "name": "Extension", "nodeType": "EventDefinition", "parameters": { "id": 1047, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1044, "indexed": true, "name": "_first", "nodeType": "VariableDeclaration", "scope": 1048, "src": "435:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1043, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "435:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1046, "indexed": true, "name": "_last", "nodeType": "VariableDeclaration", "scope": 1048, "src": "459:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1045, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "459:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "434:47:3" }, "src": "419:63:3" }, { "anonymous": false, "documentation": null, "id": 1056, "name": "Reorg", "nodeType": "EventDefinition", "parameters": { "id": 1055, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1050, "indexed": true, "name": "_from", "nodeType": "VariableDeclaration", "scope": 1056, "src": "499:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1049, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "499:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1052, "indexed": true, "name": "_to", "nodeType": "VariableDeclaration", "scope": 1056, "src": "522:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1051, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "522:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1054, "indexed": true, "name": "_gcd", "nodeType": "VariableDeclaration", "scope": 1056, "src": "543:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1053, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "543:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "498:66:3" }, "src": "487:78:3" }, { "body": null, "documentation": null, "id": 1069, "implemented": false, "kind": "function", "modifiers": [], "name": "isMostRecentAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1065, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1058, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1069, "src": "610:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1057, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "610:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1060, "name": "_left", "nodeType": "VariableDeclaration", "scope": 1069, "src": "637:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1059, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "637:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1062, "name": "_right", "nodeType": "VariableDeclaration", "scope": 1069, "src": "660:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1061, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "660:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1064, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1069, "src": "684:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1063, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "684:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "600:104:3" }, "returnParameters": { "id": 1068, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1067, "name": "", "nodeType": "VariableDeclaration", "scope": 1069, "src": "728:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1066, "name": "bool", "nodeType": "ElementaryTypeName", "src": "728:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "727:6:3" }, "scope": 1166, "src": "571:163:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1074, "implemented": false, "kind": "function", "modifiers": [], "name": "getCurrentEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 1070, "nodeType": "ParameterList", "parameters": [], "src": "774:2:3" }, "returnParameters": { "id": 1073, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1072, "name": "", "nodeType": "VariableDeclaration", "scope": 1074, "src": "800:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1071, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "800:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "799:9:3" }, "scope": 1166, "src": "740:69:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1079, "implemented": false, "kind": "function", "modifiers": [], "name": "getPrevEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 1075, "nodeType": "ParameterList", "parameters": [], "src": "845:2:3" }, "returnParameters": { "id": 1078, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1077, "name": "", "nodeType": "VariableDeclaration", "scope": 1079, "src": "871:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1076, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "871:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "870:9:3" }, "scope": 1166, "src": "814:66:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1084, "implemented": false, "kind": "function", "modifiers": [], "name": "getRelayGenesis", "nodeType": "FunctionDefinition", "parameters": { "id": 1080, "nodeType": "ParameterList", "parameters": [], "src": "909:2:3" }, "returnParameters": { "id": 1083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1082, "name": "", "nodeType": "VariableDeclaration", "scope": 1084, "src": "935:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1081, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "935:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "934:9:3" }, "scope": 1166, "src": "885:59:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1089, "implemented": false, "kind": "function", "modifiers": [], "name": "getBestKnownDigest", "nodeType": "FunctionDefinition", "parameters": { "id": 1085, "nodeType": "ParameterList", "parameters": [], "src": "976:2:3" }, "returnParameters": { "id": 1088, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1087, "name": "", "nodeType": "VariableDeclaration", "scope": 1089, "src": "1002:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1086, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1002:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1001:9:3" }, "scope": 1166, "src": "949:62:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1094, "implemented": false, "kind": "function", "modifiers": [], "name": "getLastReorgCommonAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1090, "nodeType": "ParameterList", "parameters": [], "src": "1051:2:3" }, "returnParameters": { "id": 1093, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1092, "name": "", "nodeType": "VariableDeclaration", "scope": 1094, "src": "1077:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1091, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1077:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1076:9:3" }, "scope": 1166, "src": "1016:70:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1101, "implemented": false, "kind": "function", "modifiers": [], "name": "findHeight", "nodeType": "FunctionDefinition", "parameters": { "id": 1097, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1096, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1101, "src": "1112:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1095, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1112:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1111:17:3" }, "returnParameters": { "id": 1100, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1099, "name": "", "nodeType": "VariableDeclaration", "scope": 1101, "src": "1152:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1098, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1152:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1151:9:3" }, "scope": 1166, "src": "1092:69:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1110, "implemented": false, "kind": "function", "modifiers": [], "name": "findAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1106, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1103, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1110, "src": "1189:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1102, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1189:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1105, "name": "_offset", "nodeType": "VariableDeclaration", "scope": 1110, "src": "1206:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1104, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1206:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1188:34:3" }, "returnParameters": { "id": 1109, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1108, "name": "", "nodeType": "VariableDeclaration", "scope": 1110, "src": "1246:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1107, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1246:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1245:9:3" }, "scope": 1166, "src": "1167:88:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1121, "implemented": false, "kind": "function", "modifiers": [], "name": "isAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1117, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1112, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1281:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1111, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1281:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1114, "name": "_descendant", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1300:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1113, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1300:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1116, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1321:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1115, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1321:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1280:56:3" }, "returnParameters": { "id": 1120, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1119, "name": "", "nodeType": "VariableDeclaration", "scope": 1121, "src": "1360:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1118, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1360:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1359:6:3" }, "scope": 1166, "src": "1261:105:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1132, "implemented": false, "kind": "function", "modifiers": [], "name": "heaviestFromAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1128, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1123, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1411:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1122, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1411:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1125, "name": "_left", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1438:20:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1124, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1438:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1127, "name": "_right", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1468:21:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1126, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1468:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1401:94:3" }, "returnParameters": { "id": 1131, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1130, "name": "", "nodeType": "VariableDeclaration", "scope": 1132, "src": "1519:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1129, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1519:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1518:9:3" }, "scope": 1166, "src": "1372:156:3", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1141, "implemented": false, "kind": "function", "modifiers": [], "name": "addHeaders", "nodeType": "FunctionDefinition", "parameters": { "id": 1137, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1134, "name": "_anchor", "nodeType": "VariableDeclaration", "scope": 1141, "src": "1554:22:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1133, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1554:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1136, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1141, "src": "1578:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1135, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1578:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1553:49:3" }, "returnParameters": { "id": 1140, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1139, "name": "", "nodeType": "VariableDeclaration", "scope": 1141, "src": "1621:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1138, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1621:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1620:6:3" }, "scope": 1166, "src": "1534:93:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1152, "implemented": false, "kind": "function", "modifiers": [], "name": "addHeadersWithRetarget", "nodeType": "FunctionDefinition", "parameters": { "id": 1148, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1143, "name": "_oldPeriodStartHeader", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1674:36:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1142, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1674:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1145, "name": "_oldPeriodEndHeader", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1720:34:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1144, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1720:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1147, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1764:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1146, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1764:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1664:129:3" }, "returnParameters": { "id": 1151, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1150, "name": "", "nodeType": "VariableDeclaration", "scope": 1152, "src": "1812:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1149, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1812:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1811:6:3" }, "scope": 1166, "src": "1633:185:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": null, "id": 1165, "implemented": false, "kind": "function", "modifiers": [], "name": "markNewHeaviest", "nodeType": "FunctionDefinition", "parameters": { "id": 1161, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1154, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1858:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1153, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1858:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1156, "name": "_currentBest", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1885:27:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1155, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1885:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1158, "name": "_newBest", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1922:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1157, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1922:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1160, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1955:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1159, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1955:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1848:127:3" }, "returnParameters": { "id": 1164, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1163, "name": "", "nodeType": "VariableDeclaration", "scope": 1165, "src": "1994:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1162, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1994:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1993:6:3" }, "scope": 1166, "src": "1824:176:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" } ], "scope": 2253, "src": "395:1607:3" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 1167, "name": "IRelay", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1166, "src": "2022:6:3", "typeDescriptions": { "typeIdentifier": "t_contract$_IRelay_$1166", "typeString": "contract IRelay" } }, "id": 1168, "nodeType": "InheritanceSpecifier", "src": "2022:6:3" } ], "contractDependencies": [ 1166 ], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "id": 2252, "linearizedBaseContracts": [ 2252, 1166 ], "name": "Relay", "nodeType": "ContractDefinition", "nodes": [ { "id": 1171, "libraryName": { "contractScope": null, "id": 1169, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4366, "src": "2041:8:3", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$4366", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "2035:27:3", "typeName": { "id": 1170, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2054:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 1174, "libraryName": { "contractScope": null, "id": 1172, "name": "BytesLib", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4269, "src": "2073:8:3", "typeDescriptions": { "typeIdentifier": "t_contract$_BytesLib_$4269", "typeString": "library BytesLib" } }, "nodeType": "UsingForDirective", "src": "2067:25:3", "typeName": { "id": 1173, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2086:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "id": 1177, "libraryName": { "contractScope": null, "id": 1175, "name": "BTCUtils", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4082, "src": "2103:8:3", "typeDescriptions": { "typeIdentifier": "t_contract$_BTCUtils_$4082", "typeString": "library BTCUtils" } }, "nodeType": "UsingForDirective", "src": "2097:25:3", "typeName": { "id": 1176, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2116:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "id": 1180, "libraryName": { "contractScope": null, "id": 1178, "name": "ValidateSPV", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5008, "src": "2133:11:3", "typeDescriptions": { "typeIdentifier": "t_contract$_ValidateSPV_$5008", "typeString": "library ValidateSPV" } }, "nodeType": "UsingForDirective", "src": "2127:28:3", "typeName": { "id": 1179, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2149:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "constant": true, "id": 1183, "name": "HEIGHT_INTERVAL", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2272:42:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "typeName": { "id": 1181, "name": "uint32", "nodeType": "ElementaryTypeName", "src": "2272:6:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "value": { "argumentTypes": null, "hexValue": "34", "id": 1182, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2313:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_4_by_1", "typeString": "int_const 4" }, "value": "4" }, "visibility": "public" }, { "constant": false, "id": 1185, "name": "relayGenesis", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2321:29:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1184, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2321:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1187, "name": "bestKnownDigest", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2356:32:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1186, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2356:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1189, "name": "lastReorgCommonAncestor", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2394:40:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1188, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2394:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1193, "name": "previousBlock", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2440:51:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" }, "typeName": { "id": 1192, "keyType": { "id": 1190, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2449:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "2440:28:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" }, "valueType": { "id": 1191, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2460:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1197, "name": "blockHeight", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2497:49:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" }, "typeName": { "id": 1196, "keyType": { "id": 1194, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2506:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "2497:28:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" }, "valueType": { "id": 1195, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2517:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1199, "name": "currentEpochDiff", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2553:33:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1198, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2553:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1201, "name": "prevEpochDiff", "nodeType": "VariableDeclaration", "scope": 2252, "src": "2592:30:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1200, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2592:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "body": { "id": 1272, "nodeType": "Block", "src": "3083:653:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1214, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1211, "name": "_genesisHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1203, "src": "3101:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1212, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3101:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "3830", "id": 1213, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3126:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" }, "src": "3101:27:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "53746f70206265696e672064756d62", "id": 1215, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3130:17:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_54f9a5f9e9dfa58d8856435ba6e7418b795ac217ba9b784a12213c7ba6375b05", "typeString": "literal_string \"Stop being dumb\"" }, "value": "Stop being dumb" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_54f9a5f9e9dfa58d8856435ba6e7418b795ac217ba9b784a12213c7ba6375b05", "typeString": "literal_string \"Stop being dumb\"" } ], "id": 1210, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "3093:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1216, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3093:55:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1217, "nodeType": "ExpressionStatement", "src": "3093:55:3" }, { "assignments": [ 1219 ], "declarations": [ { "constant": false, "id": 1219, "name": "_genesisDigest", "nodeType": "VariableDeclaration", "scope": 1272, "src": "3158:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1218, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3158:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1223, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1220, "name": "_genesisHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1203, "src": "3183:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1221, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "3183:22:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1222, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3183:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "3158:49:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1233, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1229, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1225, "name": "_periodStart", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1207, "src": "3239:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "307830303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030666666666666", "id": 1227, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3262:66:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_16777215_by_1", "typeString": "int_const 16777215" }, "value": "0x0000000000000000000000000000000000000000000000000000000000ffffff" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_16777215_by_1", "typeString": "int_const 16777215" } ], "id": 1226, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "3254:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1228, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3254:75:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3239:90:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1231, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3341:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1230, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "3333:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1232, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3333:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3239:104:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "506572696f64207374617274206861736820646f6573206e6f74206861766520776f726b2e2048696e743a2077726f6e672062797465206f726465723f", "id": 1234, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3357:63:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c63e0adf63c0728a57e27fbecf3408104165ff577e498d3d8684c7fbae01d26d", "typeString": "literal_string \"Period start hash does not have work. Hint: wrong byte order?\"" }, "value": "Period start hash does not have work. Hint: wrong byte order?" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c63e0adf63c0728a57e27fbecf3408104165ff577e498d3d8684c7fbae01d26d", "typeString": "literal_string \"Period start hash does not have work. Hint: wrong byte order?\"" } ], "id": 1224, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "3218:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1235, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3218:203:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1236, "nodeType": "ExpressionStatement", "src": "3218:203:3" }, { "expression": { "argumentTypes": null, "id": 1239, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1237, "name": "relayGenesis", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1185, "src": "3432:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1238, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3447:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3432:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1240, "nodeType": "ExpressionStatement", "src": "3432:29:3" }, { "expression": { "argumentTypes": null, "id": 1243, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1241, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "3471:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1242, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3489:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3471:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1244, "nodeType": "ExpressionStatement", "src": "3471:32:3" }, { "expression": { "argumentTypes": null, "id": 1247, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1245, "name": "lastReorgCommonAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1189, "src": "3513:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1246, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3539:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "3513:40:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1248, "nodeType": "ExpressionStatement", "src": "3513:40:3" }, { "expression": { "argumentTypes": null, "id": 1253, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1249, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "3563:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1251, "indexExpression": { "argumentTypes": null, "id": 1250, "name": "_genesisDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1219, "src": "3575:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3563:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1252, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1205, "src": "3593:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3563:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1254, "nodeType": "ExpressionStatement", "src": "3563:37:3" }, { "expression": { "argumentTypes": null, "id": 1264, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1255, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "3610:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1257, "indexExpression": { "argumentTypes": null, "id": 1256, "name": "_periodStart", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1207, "src": "3622:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3610:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1262, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1260, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1205, "src": "3650:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 1261, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3660:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "3650:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 1258, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1205, "src": "3638:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1259, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4340, "src": "3638:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1263, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3638:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3610:55:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1265, "nodeType": "ExpressionStatement", "src": "3610:55:3" }, { "expression": { "argumentTypes": null, "id": 1270, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1266, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "3676:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1267, "name": "_genesisHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1203, "src": "3695:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1268, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "3695:32:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1269, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3695:34:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3676:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1271, "nodeType": "ExpressionStatement", "src": "3676:53:3" } ] }, "documentation": "@notice Gives a starting point for the relay\n @dev We don't check this AT ALL really. Don't use relays with bad genesis\n @param _genesisHeader The starting header\n @param _height The starting height\n @param _periodStart The hash of the first header in the genesis epoch", "id": 1273, "implemented": true, "kind": "constructor", "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 1208, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1203, "name": "_genesisHeader", "nodeType": "VariableDeclaration", "scope": 1273, "src": "3008:27:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1202, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3008:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1205, "name": "_height", "nodeType": "VariableDeclaration", "scope": 1273, "src": "3037:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1204, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3037:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1207, "name": "_periodStart", "nodeType": "VariableDeclaration", "scope": 1273, "src": "3054:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1206, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3054:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "3007:68:3" }, "returnParameters": { "id": 1209, "nodeType": "ParameterList", "parameters": [], "src": "3083:0:3" }, "scope": 2252, "src": "2996:740:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 1453, "nodeType": "Block", "src": "4340:2176:3", "statements": [ { "assignments": [ 1285 ], "declarations": [ { "constant": false, "id": 1285, "name": "_height", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4350:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1284, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4350:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1286, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "4350:15:3" }, { "assignments": [ 1288 ], "declarations": [ { "constant": false, "id": 1288, "name": "_header", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4375:20:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1287, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4375:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 1289, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "4375:20:3" }, { "assignments": [ 1291 ], "declarations": [ { "constant": false, "id": 1291, "name": "_currentDigest", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4405:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1290, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4405:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1292, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "4405:22:3" }, { "assignments": [ 1294 ], "declarations": [ { "constant": false, "id": 1294, "name": "_previousDigest", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4437:23:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1293, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4437:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1298, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1295, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1275, "src": "4463:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1296, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "4463:15:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1297, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4463:17:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "4437:43:3" }, { "assignments": [ 1300 ], "declarations": [ { "constant": false, "id": 1300, "name": "_target", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4491:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1299, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4491:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1308, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1303, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4524:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, { "argumentTypes": null, "hexValue": "3830", "id": 1304, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4527:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1301, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "4509:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1302, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "slice", "nodeType": "MemberAccess", "referencedDeclaration": 4133, "src": "4509:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1305, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4509:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1306, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "4509:35:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1307, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4509:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "4491:55:3" }, { "assignments": [ 1310 ], "declarations": [ { "constant": false, "id": 1310, "name": "_anchorHeight", "nodeType": "VariableDeclaration", "scope": 1453, "src": "4556:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1309, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4556:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1314, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1312, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "4592:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1311, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "4580:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1313, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4580:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "4556:52:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1322, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1316, "name": "_internal", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1279, "src": "4669:9:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1321, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1317, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1275, "src": "4682:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1318, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "4682:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1319, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4682:23:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1320, "name": "_target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1300, "src": "4709:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "4682:34:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "4669:47:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "556e6578706563746564207265746172676574206f6e2065787465726e616c2063616c6c", "id": 1323, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4730:38:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c33296853216f4d74abe3a6fbf840e018f81995cd8c40108858eaa3d5148cebc", "typeString": "literal_string \"Unexpected retarget on external call\"" }, "value": "Unexpected retarget on external call" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c33296853216f4d74abe3a6fbf840e018f81995cd8c40108858eaa3d5148cebc", "typeString": "literal_string \"Unexpected retarget on external call\"" } ], "id": 1315, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "4648:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1324, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4648:121:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1325, "nodeType": "ExpressionStatement", "src": "4648:121:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1332, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1330, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1327, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "4787:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1328, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4787:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "3830", "id": 1329, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4805:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" }, "src": "4787:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1331, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4811:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "4787:25:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "486561646572206172726179206c656e677468206d75737420626520646976697369626c65206279203830", "id": 1333, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4814:45:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_64951f0822ebc61755f01c687a3aabd90c37a5b5a62d0764ef2ec9edb60caca4", "typeString": "literal_string \"Header array length must be divisible by 80\"" }, "value": "Header array length must be divisible by 80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_64951f0822ebc61755f01c687a3aabd90c37a5b5a62d0764ef2ec9edb60caca4", "typeString": "literal_string \"Header array length must be divisible by 80\"" } ], "id": 1326, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "4779:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1334, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4779:81:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1335, "nodeType": "ExpressionStatement", "src": "4779:81:3" }, { "body": { "id": 1442, "nodeType": "Block", "src": "5170:1234:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1362, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1353, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "5184:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "3830", "id": 1358, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5215:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1356, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5209:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1357, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "mul", "nodeType": "MemberAccess", "referencedDeclaration": 4305, "src": "5209:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1359, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5209:9:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "3830", "id": 1360, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5220:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1354, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "5194:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1355, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "slice", "nodeType": "MemberAccess", "referencedDeclaration": 4133, "src": "5194:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1361, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5194:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "5184:39:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1363, "nodeType": "ExpressionStatement", "src": "5184:39:3" }, { "expression": { "argumentTypes": null, "id": 1371, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1364, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1285, "src": "5237:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1369, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1367, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5265:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 1368, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5269:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "5265:5:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 1365, "name": "_anchorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1310, "src": "5247:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1366, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "5247:17:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1370, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5247:24:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5237:34:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1372, "nodeType": "ExpressionStatement", "src": "5237:34:3" }, { "expression": { "argumentTypes": null, "id": 1377, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1373, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5285:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1374, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "5302:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1375, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "5302:15:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1376, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5302:17:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "5285:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1378, "nodeType": "ExpressionStatement", "src": "5285:34:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1385, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1379, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "5520:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1381, "indexExpression": { "argumentTypes": null, "id": 1380, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5534:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5520:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5561:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1382, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "5553:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1384, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5553:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "5520:43:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1420, "nodeType": "IfStatement", "src": "5516:560:3", "trueBody": { "id": 1419, "nodeType": "Block", "src": "5565:511:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1396, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1389, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5629:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 1387, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5010, "src": "5612:3:3", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 1388, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5612:16:3", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 1390, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5612:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1391, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "reverseEndianness", "nodeType": "MemberAccess", "referencedDeclaration": 2579, "src": "5612:50:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes memory)" } }, "id": 1392, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5612:52:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1393, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "bytesToUint", "nodeType": "MemberAccess", "referencedDeclaration": 2726, "src": "5612:64:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1394, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5612:66:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "id": 1395, "name": "_target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1300, "src": "5682:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5612:77:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "48656164657220776f726b20697320696e73756666696369656e74", "id": 1397, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5711:29:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_577a884d824749cadf11f1d13d4dc4655ad406f62456ad5e910541517ce4d497", "typeString": "literal_string \"Header work is insufficient\"" }, "value": "Header work is insufficient" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_577a884d824749cadf11f1d13d4dc4655ad406f62456ad5e910541517ce4d497", "typeString": "literal_string \"Header work is insufficient\"" } ], "id": 1386, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "5583:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1398, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5583:158:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1399, "nodeType": "ExpressionStatement", "src": "5583:158:3" }, { "expression": { "argumentTypes": null, "id": 1404, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1400, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "5759:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1402, "indexExpression": { "argumentTypes": null, "id": 1401, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "5773:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5759:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1403, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "5791:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "5759:47:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1405, "nodeType": "ExpressionStatement", "src": "5759:47:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1410, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1408, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1406, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1285, "src": "5828:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "id": 1407, "name": "HEIGHT_INTERVAL", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1183, "src": "5838:15:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "src": "5828:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1409, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5857:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "5828:30:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1418, "nodeType": "IfStatement", "src": "5824:238:3", "trueBody": { "id": 1417, "nodeType": "Block", "src": "5860:202:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1415, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1411, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "6006:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1413, "indexExpression": { "argumentTypes": null, "id": 1412, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "6018:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6006:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1414, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1285, "src": "6036:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6006:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1416, "nodeType": "ExpressionStatement", "src": "6006:37:3" } ] } } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1426, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1422, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "6168:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1423, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "6168:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1424, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6168:23:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1425, "name": "_target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1300, "src": "6195:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6168:34:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "546172676574206368616e67656420756e65787065637465646c79", "id": 1427, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6204:29:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_7512beb8d719892f726a7e4249334e5ee85f327ca3e7b9c917a97c9e30ad0aa4", "typeString": "literal_string \"Target changed unexpectedly\"" }, "value": "Target changed unexpectedly" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_7512beb8d719892f726a7e4249334e5ee85f327ca3e7b9c917a97c9e30ad0aa4", "typeString": "literal_string \"Target changed unexpectedly\"" } ], "id": 1421, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "6160:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1428, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6160:74:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1429, "nodeType": "ExpressionStatement", "src": "6160:74:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1433, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "6287:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 1431, "name": "_header", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1288, "src": "6256:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1432, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "validateHeaderPrevHash", "nodeType": "MemberAccess", "referencedDeclaration": 5007, "src": "6256:30:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_bytes32_$returns$_t_bool_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,bytes32) pure returns (bool)" } }, "id": 1434, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6256:47:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4865616465727320646f206e6f7420666f726d206120636f6e73697374656e7420636861696e", "id": 1435, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6305:40:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_09edac151df9e4894b9dc57d4b428f162596747b62bb7347fd3851a717f60df7", "typeString": "literal_string \"Headers do not form a consistent chain\"" }, "value": "Headers do not form a consistent chain" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_09edac151df9e4894b9dc57d4b428f162596747b62bb7347fd3851a717f60df7", "typeString": "literal_string \"Headers do not form a consistent chain\"" } ], "id": 1430, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "6248:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1436, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6248:98:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1437, "nodeType": "ExpressionStatement", "src": "6248:98:3" }, { "expression": { "argumentTypes": null, "id": 1440, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1438, "name": "_previousDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1294, "src": "6361:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1439, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "6379:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "6361:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1441, "nodeType": "ExpressionStatement", "src": "6361:32:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1345, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1340, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5130:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1344, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1341, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1277, "src": "5134:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1342, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5134:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "/", "rightExpression": { "argumentTypes": null, "hexValue": "3830", "id": 1343, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5152:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" }, "src": "5134:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5130:24:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1443, "initializationExpression": { "assignments": [ 1337 ], "declarations": [ { "constant": false, "id": 1337, "name": "i", "nodeType": "VariableDeclaration", "scope": 1443, "src": "5115:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1336, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5115:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1339, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1338, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5127:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "5115:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1351, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1346, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5156:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1349, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5166:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1347, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1337, "src": "5160:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1348, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "5160:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1350, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5160:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5156:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1352, "nodeType": "ExpressionStatement", "src": "5156:12:3" }, "nodeType": "ForStatement", "src": "5110:1294:3" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1445, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1275, "src": "6442:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1446, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "6442:15:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1447, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6442:17:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1448, "name": "_currentDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1291, "src": "6473:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1444, "name": "Extension", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1048, "src": "6419:9:3", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_bytes32_$returns$__$", "typeString": "function (bytes32,bytes32)" } }, "id": 1449, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6419:69:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1450, "nodeType": "EmitStatement", "src": "6414:74:3" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1451, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "6505:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1283, "id": 1452, "nodeType": "Return", "src": "6498:11:3" } ] }, "documentation": "@notice Adds headers to storage after validating\n @dev We check integrity and consistency of the header chain\n @param _anchor The header immediately preceeding the new chain\n @param _headers A tightly-packed list of new 80-byte Bitcoin headers to record\n @param _internal True if called internally from addHeadersWithRetarget, false otherwise\n @return True if successfully written, error otherwise", "id": 1454, "implemented": true, "kind": "function", "modifiers": [], "name": "_addHeaders", "nodeType": "FunctionDefinition", "parameters": { "id": 1280, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1275, "name": "_anchor", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4255:20:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1274, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4255:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1277, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4277:21:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1276, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4277:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1279, "name": "_internal", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4300:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1278, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4300:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4254:61:3" }, "returnParameters": { "id": 1283, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1282, "name": "", "nodeType": "VariableDeclaration", "scope": 1454, "src": "4334:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1281, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4334:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4333:6:3" }, "scope": 2252, "src": "4234:2282:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1469, "nodeType": "Block", "src": "6994:61:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1464, "name": "_anchor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1456, "src": "7023:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1465, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1458, "src": "7032:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "hexValue": "66616c7365", "id": 1466, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "7042:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 1463, "name": "_addHeaders", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1454, "src": "7011:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_bool_$returns$_t_bool_$", "typeString": "function (bytes memory,bytes memory,bool) returns (bool)" } }, "id": 1467, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7011:37:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1462, "id": 1468, "nodeType": "Return", "src": "7004:44:3" } ] }, "documentation": "@notice Adds headers to storage after validating\n @dev We check integrity and consistency of the header chain\n @param _anchor The header immediately preceeding the new chain\n @param _headers A tightly-packed list of 80-byte Bitcoin headers\n @return True if successfully written, error otherwise", "id": 1470, "implemented": true, "kind": "function", "modifiers": [], "name": "addHeaders", "nodeType": "FunctionDefinition", "parameters": { "id": 1459, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1456, "name": "_anchor", "nodeType": "VariableDeclaration", "scope": 1470, "src": "6921:22:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1455, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6921:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1458, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1470, "src": "6945:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1457, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6945:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "6920:49:3" }, "returnParameters": { "id": 1462, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1461, "name": "", "nodeType": "VariableDeclaration", "scope": 1470, "src": "6988:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1460, "name": "bool", "nodeType": "ElementaryTypeName", "src": "6988:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "6987:6:3" }, "scope": 2252, "src": "6901:154:3", "stateMutability": "nonpayable", "superFunction": 1141, "visibility": "external" }, { "body": { "id": 1487, "nodeType": "Block", "src": "7796:101:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1482, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1472, "src": "7837:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1483, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1474, "src": "7860:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1484, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1476, "src": "7881:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "id": 1481, "name": "_addHeadersWithRetarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1615, "src": "7813:23:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (bytes memory,bytes memory,bytes memory) returns (bool)" } }, "id": 1485, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7813:77:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1480, "id": 1486, "nodeType": "Return", "src": "7806:84:3" } ] }, "documentation": "@notice Adds headers to storage, performs additional validation of retarget\n @dev Checks the retarget, the heights, and the linkage\n @param _oldPeriodStartHeader The first header in the difficulty period being closed\n @param _oldPeriodEndHeader The last header in the difficulty period being closed\n @param _headers A tightly-packed list of 80-byte Bitcoin headers\n @return True if successfully written, error otherwise", "id": 1488, "implemented": true, "kind": "function", "modifiers": [], "name": "addHeadersWithRetarget", "nodeType": "FunctionDefinition", "parameters": { "id": 1477, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1472, "name": "_oldPeriodStartHeader", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7652:36:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1471, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7652:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1474, "name": "_oldPeriodEndHeader", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7698:34:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1473, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7698:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1476, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7742:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1475, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7742:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "7642:129:3" }, "returnParameters": { "id": 1480, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1479, "name": "", "nodeType": "VariableDeclaration", "scope": 1488, "src": "7790:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1478, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7790:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "7789:6:3" }, "scope": 2252, "src": "7611:286:3", "stateMutability": "nonpayable", "superFunction": 1152, "visibility": "external" }, { "body": { "id": 1614, "nodeType": "Block", "src": "8633:1813:3", "statements": [ { "assignments": [ 1500 ], "declarations": [ { "constant": false, "id": 1500, "name": "_startHeight", "nodeType": "VariableDeclaration", "scope": 1614, "src": "8697:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1499, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8697:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1506, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1502, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "8732:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1503, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "8732:29:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1504, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8732:31:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1501, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "8720:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1505, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8720:44:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "8697:67:3" }, { "assignments": [ 1508 ], "declarations": [ { "constant": false, "id": 1508, "name": "_endHeight", "nodeType": "VariableDeclaration", "scope": 1614, "src": "8774:18:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1507, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8774:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1514, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1510, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "8807:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1511, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "8807:27:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1512, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8807:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1509, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "8795:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1513, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8795:42:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "8774:63:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1520, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1518, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1516, "name": "_endHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1508, "src": "8935:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 1517, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8948:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "8935:17:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "32303135", "id": 1519, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8956:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2015_by_1", "typeString": "int_const 2015" }, "value": "2015" }, "src": "8935:25:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4d7573742070726f7669646520746865206c61737420686561646572206f662074686520636c6f73696e6720646966666963756c747920706572696f64", "id": 1521, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8974:63:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_7bce8283552532854aff5aeca68cfd1afcae4f19a96f4f0f9a36c4ae487d1db8", "typeString": "literal_string \"Must provide the last header of the closing difficulty period\"" }, "value": "Must provide the last header of the closing difficulty period" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_7bce8283552532854aff5aeca68cfd1afcae4f19a96f4f0f9a36c4ae487d1db8", "typeString": "literal_string \"Must provide the last header of the closing difficulty period\"" } ], "id": 1515, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "8914:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1522, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8914:124:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1523, "nodeType": "ExpressionStatement", "src": "8914:124:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1530, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1525, "name": "_endHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1508, "src": "9069:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "32303135", "id": 1528, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9100:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2015_by_1", "typeString": "int_const 2015" }, "value": "2015" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2015_by_1", "typeString": "int_const 2015" } ], "expression": { "argumentTypes": null, "id": 1526, "name": "_startHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1500, "src": "9083:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1527, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "9083:16:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1529, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9083:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9069:36:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4d7573742070726f766964652065786163746c79203120646966666963756c747920706572696f64", "id": 1531, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9119:42:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_67c7c738a8cf54313c844b3267d6767c493dfc5af7d7c931a36a94b2d81f8e3e", "typeString": "literal_string \"Must provide exactly 1 difficulty period\"" }, "value": "Must provide exactly 1 difficulty period" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_67c7c738a8cf54313c844b3267d6767c493dfc5af7d7c931a36a94b2d81f8e3e", "typeString": "literal_string \"Must provide exactly 1 difficulty period\"" } ], "id": 1524, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "9048:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1532, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9048:114:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1533, "nodeType": "ExpressionStatement", "src": "9048:114:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1541, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1535, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "9193:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1536, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "9193:39:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1537, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9193:41:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1538, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "9238:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1539, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "9238:37:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1540, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9238:39:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9193:84:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "506572696f642068656164657220646966666963756c7469657320646f206e6f74206d61746368", "id": 1542, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9291:41:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c6456ff224d25c664f0efff0894b66e1bf05b6cd6fdb6e7d6c08db546c000032", "typeString": "literal_string \"Period header difficulties do not match\"" }, "value": "Period header difficulties do not match" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c6456ff224d25c664f0efff0894b66e1bf05b6cd6fdb6e7d6c08db546c000032", "typeString": "literal_string \"Period header difficulties do not match\"" } ], "id": 1534, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "9172:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1543, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9172:161:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1544, "nodeType": "ExpressionStatement", "src": "9172:161:3" }, { "assignments": [ 1546 ], "declarations": [ { "constant": false, "id": 1546, "name": "_newPeriodStart", "nodeType": "VariableDeclaration", "scope": 1614, "src": "9438:28:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1545, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "9438:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 1552, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1549, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9484:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, { "argumentTypes": null, "hexValue": "3830", "id": 1550, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9487:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" }, "value": "80" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, { "typeIdentifier": "t_rational_80_by_1", "typeString": "int_const 80" } ], "expression": { "argumentTypes": null, "id": 1547, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1494, "src": "9469:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1548, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "slice", "nodeType": "MemberAccess", "referencedDeclaration": 4133, "src": "9469:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1551, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9469:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "9438:52:3" }, { "assignments": [ 1554 ], "declarations": [ { "constant": false, "id": 1554, "name": "_actualTarget", "nodeType": "VariableDeclaration", "scope": 1614, "src": "9500:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1553, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9500:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1558, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1555, "name": "_newPeriodStart", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1546, "src": "9524:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1556, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "9524:29:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1557, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9524:31:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "9500:55:3" }, { "assignments": [ 1560 ], "declarations": [ { "constant": false, "id": 1560, "name": "_expectedTarget", "nodeType": "VariableDeclaration", "scope": 1614, "src": "9565:23:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1559, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9565:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1573, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1563, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "9631:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1564, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTarget", "nodeType": "MemberAccess", "referencedDeclaration": 3777, "src": "9631:35:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1565, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9631:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1566, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "9682:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1567, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTimestamp", "nodeType": "MemberAccess", "referencedDeclaration": 3850, "src": "9682:38:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint32)" } }, "id": 1568, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9682:40:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1569, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "9736:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1570, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractTimestamp", "nodeType": "MemberAccess", "referencedDeclaration": 3850, "src": "9736:36:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint32)" } }, "id": 1571, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9736:38:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint32", "typeString": "uint32" }, { "typeIdentifier": "t_uint32", "typeString": "uint32" } ], "expression": { "argumentTypes": null, "id": 1561, "name": "BTCUtils", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4082, "src": "9591:8:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_BTCUtils_$4082_$", "typeString": "type(library BTCUtils)" } }, "id": 1562, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "retargetAlgorithm", "nodeType": "MemberAccess", "referencedDeclaration": 4081, "src": "9591:26:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256,uint256) pure returns (uint256)" } }, "id": 1572, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9591:193:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "9565:219:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1580, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1577, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1575, "name": "_actualTarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1554, "src": "9816:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "argumentTypes": null, "id": 1576, "name": "_expectedTarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1560, "src": "9832:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9816:31:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 1578, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "9815:33:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1579, "name": "_actualTarget", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1554, "src": "9852:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9815:50:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "496e76616c69642072657461726765742070726f7669646564", "id": 1581, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9879:27:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_88fb068d9d9bb4cb430555f47426ce90db05a008971325835664896da5946718", "typeString": "literal_string \"Invalid retarget provided\"" }, "value": "Invalid retarget provided" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_88fb068d9d9bb4cb430555f47426ce90db05a008971325835664896da5946718", "typeString": "literal_string \"Invalid retarget provided\"" } ], "id": 1574, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "9794:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1582, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9794:113:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1583, "nodeType": "ExpressionStatement", "src": "9794:113:3" }, { "assignments": [ 1585 ], "declarations": [ { "constant": false, "id": 1585, "name": "_oldDiff", "nodeType": "VariableDeclaration", "scope": 1614, "src": "10117:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1584, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10117:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1589, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1586, "name": "_oldPeriodStartHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1490, "src": "10136:21:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1587, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "10136:39:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1588, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10136:41:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "10117:60:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1601, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1592, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1590, "name": "prevEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1201, "src": "10191:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 1591, "name": "_oldDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1585, "src": "10208:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10191:25:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1600, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1593, "name": "_endHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1508, "src": "10220:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "32303136", "id": 1598, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10266:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1595, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "10245:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1594, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "10233:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1596, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10233:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1597, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4340, "src": "10233:32:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1599, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10233:38:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10220:51:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "10191:80:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1607, "nodeType": "IfStatement", "src": "10187:133:3", "trueBody": { "id": 1606, "nodeType": "Block", "src": "10273:47:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1604, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1602, "name": "prevEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1201, "src": "10285:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1603, "name": "_oldDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1585, "src": "10301:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10285:24:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1605, "nodeType": "ExpressionStatement", "src": "10285:24:3" } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1609, "name": "_oldPeriodEndHeader", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1492, "src": "10403:19:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 1610, "name": "_headers", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1494, "src": "10424:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "hexValue": "74727565", "id": 1611, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "10434:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 1608, "name": "_addHeaders", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1454, "src": "10391:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_bool_$returns$_t_bool_$", "typeString": "function (bytes memory,bytes memory,bool) returns (bool)" } }, "id": 1612, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10391:48:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1498, "id": 1613, "nodeType": "Return", "src": "10384:55:3" } ] }, "documentation": "@notice Adds headers to storage, performs additional validation of retarget\n @dev Checks the retarget, the heights, and the linkage\n @param _oldPeriodStartHeader The first header in the difficulty period being closed\n @param _oldPeriodEndHeader The last header in the difficulty period being closed\n @param _headers A tightly-packed list of 80-byte Bitcoin headers\n @return True if successfully written, error otherwise", "id": 1615, "implemented": true, "kind": "function", "modifiers": [], "name": "_addHeadersWithRetarget", "nodeType": "FunctionDefinition", "parameters": { "id": 1495, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1490, "name": "_oldPeriodStartHeader", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8495:34:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1489, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8495:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1492, "name": "_oldPeriodEndHeader", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8539:32:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1491, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8539:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1494, "name": "_headers", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8581:21:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1493, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8581:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "8485:123:3" }, "returnParameters": { "id": 1498, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1497, "name": "", "nodeType": "VariableDeclaration", "scope": 1615, "src": "8627:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1496, "name": "bool", "nodeType": "ElementaryTypeName", "src": "8627:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "8626:6:3" }, "scope": 2252, "src": "8453:1993:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1675, "nodeType": "Block", "src": "10753:387:3", "statements": [ { "assignments": [ 1623 ], "declarations": [ { "constant": false, "id": 1623, "name": "_height", "nodeType": "VariableDeclaration", "scope": 1675, "src": "10763:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1622, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10763:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1625, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1624, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10781:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "10763:19:3" }, { "assignments": [ 1627 ], "declarations": [ { "constant": false, "id": 1627, "name": "_current", "nodeType": "VariableDeclaration", "scope": 1675, "src": "10792:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1626, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "10792:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1629, "initialValue": { "argumentTypes": null, "id": 1628, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1617, "src": "10811:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "10792:26:3" }, { "body": { "id": 1669, "nodeType": "Block", "src": "10887:214:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1650, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1646, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1623, "src": "10901:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1647, "name": "blockHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1197, "src": "10911:11:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$", "typeString": "mapping(bytes32 => uint256)" } }, "id": 1649, "indexExpression": { "argumentTypes": null, "id": 1648, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1627, "src": "10923:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10911:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10901:31:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1651, "nodeType": "ExpressionStatement", "src": "10901:31:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1654, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1652, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1623, "src": "10950:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1653, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10961:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "10950:12:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 1667, "nodeType": "Block", "src": "11037:54:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1664, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "11074:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 1662, "name": "_height", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1623, "src": "11062:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1663, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "11062:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1665, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11062:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 1621, "id": 1666, "nodeType": "Return", "src": "11055:21:3" } ] }, "id": 1668, "nodeType": "IfStatement", "src": "10946:145:3", "trueBody": { "id": 1661, "nodeType": "Block", "src": "10964:67:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1659, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1655, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1627, "src": "10982:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1656, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "10993:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1658, "indexExpression": { "argumentTypes": null, "id": 1657, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1627, "src": "11007:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10993:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "10982:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1660, "nodeType": "ExpressionStatement", "src": "10982:34:3" } ] } } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1638, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1634, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "10848:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "id": 1637, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1635, "name": "HEIGHT_INTERVAL", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1183, "src": "10852:15:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 1636, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10870:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "10852:19:3", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "src": "10848:23:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1670, "initializationExpression": { "assignments": [ 1631 ], "declarations": [ { "constant": false, "id": 1631, "name": "i", "nodeType": "VariableDeclaration", "scope": 1670, "src": "10833:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1630, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10833:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1633, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1632, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10845:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "10833:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1644, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1639, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "10873:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1642, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10883:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1640, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1631, "src": "10877:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1641, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "10877:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1643, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10877:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "10873:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1645, "nodeType": "ExpressionStatement", "src": "10873:12:3" }, "nodeType": "ForStatement", "src": "10828:273:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "556e6b6e6f776e20626c6f636b", "id": 1672, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "11117:15:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_2fe269f479def214aa4213fc5a3676b42da06f3fe6bec66494b82d7cb74589b0", "typeString": "literal_string \"Unknown block\"" }, "value": "Unknown block" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_2fe269f479def214aa4213fc5a3676b42da06f3fe6bec66494b82d7cb74589b0", "typeString": "literal_string \"Unknown block\"" } ], "id": 1671, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 5028, 5029 ], "referencedDeclaration": 5029, "src": "11110:6:3", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 1673, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11110:23:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1674, "nodeType": "ExpressionStatement", "src": "11110:23:3" } ] }, "documentation": "@notice Finds the height of a header by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header", "id": 1676, "implemented": true, "kind": "function", "modifiers": [], "name": "_findHeight", "nodeType": "FunctionDefinition", "parameters": { "id": 1618, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1617, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1676, "src": "10704:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1616, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "10704:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "10703:17:3" }, "returnParameters": { "id": 1621, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1620, "name": "", "nodeType": "VariableDeclaration", "scope": 1676, "src": "10744:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1619, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10744:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "10743:9:3" }, "scope": 2252, "src": "10683:457:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1687, "nodeType": "Block", "src": "11467:44:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1684, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1678, "src": "11496:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1683, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "11484:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 1685, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11484:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 1682, "id": 1686, "nodeType": "Return", "src": "11477:27:3" } ] }, "documentation": "@notice Finds the height of a header by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header, or error if unknown", "id": 1688, "implemented": true, "kind": "function", "modifiers": [], "name": "findHeight", "nodeType": "FunctionDefinition", "parameters": { "id": 1679, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1678, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1688, "src": "11418:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1677, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11418:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "11417:17:3" }, "returnParameters": { "id": 1682, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1681, "name": "", "nodeType": "VariableDeclaration", "scope": 1688, "src": "11458:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1680, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11458:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "11457:9:3" }, "scope": 2252, "src": "11398:113:3", "stateMutability": "view", "superFunction": 1101, "visibility": "external" }, { "body": { "id": 1734, "nodeType": "Block", "src": "11859:244:3", "statements": [ { "assignments": [ 1698 ], "declarations": [ { "constant": false, "id": 1698, "name": "_current", "nodeType": "VariableDeclaration", "scope": 1734, "src": "11869:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1697, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11869:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1700, "initialValue": { "argumentTypes": null, "id": 1699, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1690, "src": "11888:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "11869:26:3" }, { "body": { "id": 1721, "nodeType": "Block", "src": "11952:59:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1719, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1715, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "11966:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1716, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "11977:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1718, "indexExpression": { "argumentTypes": null, "id": 1717, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "11991:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "11977:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "11966:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1720, "nodeType": "ExpressionStatement", "src": "11966:34:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1707, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1705, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1702, "src": "11925:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 1706, "name": "_offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1692, "src": "11929:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "11925:11:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1722, "initializationExpression": { "assignments": [ 1702 ], "declarations": [ { "constant": false, "id": 1702, "name": "i", "nodeType": "VariableDeclaration", "scope": 1722, "src": "11910:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1701, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11910:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1704, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1703, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11922:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "11910:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1713, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1708, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1702, "src": "11938:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1711, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11948:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1709, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1702, "src": "11942:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1710, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "11942:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1712, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11942:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "11938:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1714, "nodeType": "ExpressionStatement", "src": "11938:12:3" }, "nodeType": "ForStatement", "src": "11905:106:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1728, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1724, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "12028:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1726, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "12048:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1725, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12040:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1727, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12040:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "12028:22:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "556e6b6e6f776e20616e636573746f72", "id": 1729, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "12052:18:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c461b76bf1480a8b20105a19184a1758b87ce3c97e130df422cacaf91904c3a2", "typeString": "literal_string \"Unknown ancestor\"" }, "value": "Unknown ancestor" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c461b76bf1480a8b20105a19184a1758b87ce3c97e130df422cacaf91904c3a2", "typeString": "literal_string \"Unknown ancestor\"" } ], "id": 1723, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "12020:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1730, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12020:51:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1731, "nodeType": "ExpressionStatement", "src": "12020:51:3" }, { "expression": { "argumentTypes": null, "id": 1732, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1698, "src": "12088:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 1696, "id": 1733, "nodeType": "Return", "src": "12081:15:3" } ] }, "documentation": "@notice Finds an ancestor for a block by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header, or error if unknown", "id": 1735, "implemented": true, "kind": "function", "modifiers": [], "name": "_findAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1693, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1690, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1735, "src": "11793:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1689, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11793:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1692, "name": "_offset", "nodeType": "VariableDeclaration", "scope": 1735, "src": "11810:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1691, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11810:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "11792:34:3" }, "returnParameters": { "id": 1696, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1695, "name": "", "nodeType": "VariableDeclaration", "scope": 1735, "src": "11850:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1694, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "11850:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "11849:9:3" }, "scope": 2252, "src": "11770:333:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1749, "nodeType": "Block", "src": "12450:55:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1745, "name": "_digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1737, "src": "12481:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1746, "name": "_offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1739, "src": "12490:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1744, "name": "_findAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1735, "src": "12467:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_uint256_$returns$_t_bytes32_$", "typeString": "function (bytes32,uint256) view returns (bytes32)" } }, "id": 1747, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12467:31:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 1743, "id": 1748, "nodeType": "Return", "src": "12460:38:3" } ] }, "documentation": "@notice Finds an ancestor for a block by its digest\n @dev Will fail if the header is unknown\n @param _digest The header digest to search for\n @return The height of the header, or error if unknown", "id": 1750, "implemented": true, "kind": "function", "modifiers": [], "name": "findAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1740, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1737, "name": "_digest", "nodeType": "VariableDeclaration", "scope": 1750, "src": "12384:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1736, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "12384:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1739, "name": "_offset", "nodeType": "VariableDeclaration", "scope": 1750, "src": "12401:15:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1738, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12401:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "12383:34:3" }, "returnParameters": { "id": 1743, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1742, "name": "", "nodeType": "VariableDeclaration", "scope": 1750, "src": "12441:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1741, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "12441:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "12440:9:3" }, "scope": 2252, "src": "12362:143:3", "stateMutability": "view", "superFunction": 1110, "visibility": "external" }, { "body": { "id": 1796, "nodeType": "Block", "src": "13066:332:3", "statements": [ { "assignments": [ 1762 ], "declarations": [ { "constant": false, "id": 1762, "name": "_current", "nodeType": "VariableDeclaration", "scope": 1796, "src": "13076:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1761, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13076:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1764, "initialValue": { "argumentTypes": null, "id": 1763, "name": "_descendant", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1754, "src": "13095:11:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "13076:30:3" }, { "body": { "id": 1792, "nodeType": "Block", "src": "13227:143:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1781, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1779, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1762, "src": "13245:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1780, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "13257:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "13245:21:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1785, "nodeType": "IfStatement", "src": "13241:71:3", "trueBody": { "id": 1784, "nodeType": "Block", "src": "13268:44:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1782, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "13293:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1760, "id": 1783, "nodeType": "Return", "src": "13286:11:3" } ] } }, { "expression": { "argumentTypes": null, "id": 1790, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1786, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1762, "src": "13325:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1787, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "13336:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1789, "indexExpression": { "argumentTypes": null, "id": 1788, "name": "_current", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1762, "src": "13350:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "13336:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "13325:34:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1791, "nodeType": "ExpressionStatement", "src": "13325:34:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1771, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1769, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1766, "src": "13201:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 1770, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1756, "src": "13205:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "13201:10:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1793, "initializationExpression": { "assignments": [ 1766 ], "declarations": [ { "constant": false, "id": 1766, "name": "i", "nodeType": "VariableDeclaration", "scope": 1793, "src": "13186:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1765, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "13186:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1768, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1767, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "13198:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "13186:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1777, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1772, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1766, "src": "13213:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1775, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "13223:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1773, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1766, "src": "13217:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1774, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "13217:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1776, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "13217:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "13213:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1778, "nodeType": "ExpressionStatement", "src": "13213:12:3" }, "nodeType": "ForStatement", "src": "13181:189:3" }, { "expression": { "argumentTypes": null, "hexValue": "66616c7365", "id": 1794, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "13386:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 1760, "id": 1795, "nodeType": "Return", "src": "13379:12:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective ancestor\n @param _descendant The descendant to check\n @param _limit The maximum number of blocks to check\n @return true if ancestor is at most limit blocks lower than descendant, otherwise false", "id": 1797, "implemented": true, "kind": "function", "modifiers": [], "name": "_isAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1757, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1752, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1797, "src": "12981:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1751, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "12981:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1754, "name": "_descendant", "nodeType": "VariableDeclaration", "scope": 1797, "src": "13000:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1753, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13000:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1756, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1797, "src": "13021:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1755, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "13021:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "12980:56:3" }, "returnParameters": { "id": 1760, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1759, "name": "", "nodeType": "VariableDeclaration", "scope": 1797, "src": "13060:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1758, "name": "bool", "nodeType": "ElementaryTypeName", "src": "13060:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "13059:6:3" }, "scope": 2252, "src": "12960:438:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1814, "nodeType": "Block", "src": "13958:67:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1809, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1799, "src": "13987:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1810, "name": "_descendant", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1801, "src": "13998:11:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1811, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1803, "src": "14011:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1808, "name": "_isAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1797, "src": "13975:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes32,uint256) view returns (bool)" } }, "id": 1812, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "13975:43:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1807, "id": 1813, "nodeType": "Return", "src": "13968:50:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective ancestor\n @param _descendant The descendant to check\n @param _limit The maximum number of blocks to check\n @return true if ancestor is at most limit blocks lower than descendant, otherwise false", "id": 1815, "implemented": true, "kind": "function", "modifiers": [], "name": "isAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1804, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1799, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13873:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1798, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13873:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1801, "name": "_descendant", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13892:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1800, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "13892:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1803, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13913:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1802, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "13913:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "13872:56:3" }, "returnParameters": { "id": 1807, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1806, "name": "", "nodeType": "VariableDeclaration", "scope": 1815, "src": "13952:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1805, "name": "bool", "nodeType": "ElementaryTypeName", "src": "13952:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "13951:6:3" }, "scope": 2252, "src": "13853:172:3", "stateMutability": "view", "superFunction": 1121, "visibility": "external" }, { "body": { "id": 1910, "nodeType": "Block", "src": "14791:1023:3", "statements": [ { "assignments": [ 1829 ], "declarations": [ { "constant": false, "id": 1829, "name": "_newBestDigest", "nodeType": "VariableDeclaration", "scope": 1910, "src": "14801:22:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1828, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "14801:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1833, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1830, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1821, "src": "14826:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "14826:16:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1832, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14826:18:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "14801:43:3" }, { "assignments": [ 1835 ], "declarations": [ { "constant": false, "id": 1835, "name": "_currentBestDigest", "nodeType": "VariableDeclaration", "scope": 1910, "src": "14854:26:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1834, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "14854:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1839, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1836, "name": "_currentBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1819, "src": "14883:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1837, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "14883:20:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 1838, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14883:22:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "14854:51:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1843, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1841, "name": "_currentBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1835, "src": "14923:18:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1842, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "14945:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "14923:37:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "50617373656420696e2062657374206973206e6f742062657374206b6e6f776e", "id": 1844, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "14962:34:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_08d40782ec860529d1a49d4deccf329d686c48a4affb967e8f3fe896477d9012", "typeString": "literal_string \"Passed in best is not best known\"" }, "value": "Passed in best is not best known" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_08d40782ec860529d1a49d4deccf329d686c48a4affb967e8f3fe896477d9012", "typeString": "literal_string \"Passed in best is not best known\"" } ], "id": 1840, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "14915:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1845, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14915:82:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1846, "nodeType": "ExpressionStatement", "src": "14915:82:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1854, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1848, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "15028:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1850, "indexExpression": { "argumentTypes": null, "id": 1849, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15042:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "15028:29:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 1852, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "15069:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 1851, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "15061:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1853, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15061:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15028:43:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4e6577206265737420697320756e6b6e6f776e", "id": 1855, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15085:21:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_21175d40c2ebef79a732817277d464b099ad41722534bb4c1a81ec30c878b42d", "typeString": "literal_string \"New best is unknown\"" }, "value": "New best is unknown" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_21175d40c2ebef79a732817277d464b099ad41722534bb4c1a81ec30c878b42d", "typeString": "literal_string \"New best is unknown\"" } ], "id": 1847, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "15007:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1856, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15007:100:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1857, "nodeType": "ExpressionStatement", "src": "15007:100:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1860, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15160:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1861, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "15171:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1862, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15188:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1863, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1823, "src": "15204:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1859, "name": "_isMostRecentAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2035, "src": "15138:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes32,bytes32,uint256) view returns (bool)" } }, "id": 1864, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15138:73:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416e636573746f72206d75737420626520686561766965737420636f6d6d6f6e20616e636573746f72", "id": 1865, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15225:43:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_fcaf5361cb1b11aa6567d172fd21d0d1e008d17e89623abf194305ef538c3052", "typeString": "literal_string \"Ancestor must be heaviest common ancestor\"" }, "value": "Ancestor must be heaviest common ancestor" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_fcaf5361cb1b11aa6567d172fd21d0d1e008d17e89623abf194305ef538c3052", "typeString": "literal_string \"Ancestor must be heaviest common ancestor\"" } ], "id": 1858, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "15117:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15117:152:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1867, "nodeType": "ExpressionStatement", "src": "15117:152:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1875, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1870, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15322:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1871, "name": "_currentBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1819, "src": "15333:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 1872, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1821, "src": "15347:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1869, "name": "_heaviestFromAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2193, "src": "15300:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes32,bytes memory,bytes memory) view returns (bytes32)" } }, "id": 1873, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15300:56:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1874, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15360:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15300:74:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4e65772062657374206861736820646f6573206e6f742068617665206d6f726520776f726b207468616e2070726576696f7573", "id": 1876, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15388:53:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_9fd7a9403f83332e39cd942cb934228aad1aa94f9f120f93fcbad363acc5034e", "typeString": "literal_string \"New best hash does not have more work than previous\"" }, "value": "New best hash does not have more work than previous" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_9fd7a9403f83332e39cd942cb934228aad1aa94f9f120f93fcbad363acc5034e", "typeString": "literal_string \"New best hash does not have more work than previous\"" } ], "id": 1868, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "15279:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1877, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15279:163:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1878, "nodeType": "ExpressionStatement", "src": "15279:163:3" }, { "expression": { "argumentTypes": null, "id": 1881, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1879, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "15453:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1880, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15471:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15453:32:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1882, "nodeType": "ExpressionStatement", "src": "15453:32:3" }, { "expression": { "argumentTypes": null, "id": 1885, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1883, "name": "lastReorgCommonAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1189, "src": "15495:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1884, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15521:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "15495:35:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1886, "nodeType": "ExpressionStatement", "src": "15495:35:3" }, { "assignments": [ 1888 ], "declarations": [ { "constant": false, "id": 1888, "name": "_newDiff", "nodeType": "VariableDeclaration", "scope": 1910, "src": "15541:16:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1887, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15541:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1892, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 1889, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1821, "src": "15560:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1890, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "15560:26:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 1891, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15560:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "15541:47:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1895, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1893, "name": "_newDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1888, "src": "15602:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 1894, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "15614:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "15602:28:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1901, "nodeType": "IfStatement", "src": "15598:84:3", "trueBody": { "id": 1900, "nodeType": "Block", "src": "15632:50:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1898, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1896, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "15644:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1897, "name": "_newDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1888, "src": "15663:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "15644:27:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1899, "nodeType": "ExpressionStatement", "src": "15644:27:3" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1903, "name": "_currentBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1835, "src": "15716:18:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1904, "name": "_newBestDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1829, "src": "15748:14:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1905, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1817, "src": "15776:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 1902, "name": "Reorg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1056, "src": "15697:5:3", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_bytes32_$_t_bytes32_$returns$__$", "typeString": "function (bytes32,bytes32,bytes32)" } }, "id": 1906, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15697:89:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1907, "nodeType": "EmitStatement", "src": "15692:94:3" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1908, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "15803:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1827, "id": 1909, "nodeType": "Return", "src": "15796:11:3" } ] }, "documentation": "@notice Gives a starting point for the relay\n @dev We don't check this AT ALL really. Don't use relays with bad genesis\n @param _ancestor The digest of the most recent common ancestor\n @param _currentBest The 80-byte header referenced by bestKnownDigest\n @param _newBest The 80-byte header to mark as the new best\n @param _limit Limit the amount of traversal of the chain\n @return True if successfully updates bestKnownDigest, error otherwise", "id": 1911, "implemented": true, "kind": "function", "modifiers": [], "name": "_markNewHeaviest", "nodeType": "FunctionDefinition", "parameters": { "id": 1824, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1817, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14653:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1816, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "14653:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1819, "name": "_currentBest", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14680:25:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1818, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "14680:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1821, "name": "_newBest", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14715:21:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1820, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "14715:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1823, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14746:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1822, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14746:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "14643:123:3" }, "returnParameters": { "id": 1827, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1826, "name": "", "nodeType": "VariableDeclaration", "scope": 1911, "src": "14785:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1825, "name": "bool", "nodeType": "ElementaryTypeName", "src": "14785:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "14784:6:3" }, "scope": 2252, "src": "14618:1196:3", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1931, "nodeType": "Block", "src": "16583:83:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1925, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1913, "src": "16617:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1926, "name": "_currentBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1915, "src": "16628:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1927, "name": "_newBest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1917, "src": "16642:8:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 1928, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1919, "src": "16652:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1924, "name": "_markNewHeaviest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1911, "src": "16600:16:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes memory,bytes memory,uint256) returns (bool)" } }, "id": 1929, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16600:59:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1923, "id": 1930, "nodeType": "Return", "src": "16593:66:3" } ] }, "documentation": "@notice Gives a starting point for the relay\n @dev We don't check this AT ALL really. Don't use relays with bad genesis\n @param _ancestor The digest of the most recent common ancestor\n @param _currentBest The 80-byte header referenced by bestKnownDigest\n @param _newBest The 80-byte header to mark as the new best\n @param _limit Limit the amount of traversal of the chain\n @return True if successfully updates bestKnownDigest, error otherwise", "id": 1932, "implemented": true, "kind": "function", "modifiers": [], "name": "markNewHeaviest", "nodeType": "FunctionDefinition", "parameters": { "id": 1920, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1913, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16441:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1912, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "16441:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1915, "name": "_currentBest", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16468:27:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1914, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "16468:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1917, "name": "_newBest", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16505:23:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 1916, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "16505:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1919, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16538:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1918, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16538:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "16431:127:3" }, "returnParameters": { "id": 1923, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1922, "name": "", "nodeType": "VariableDeclaration", "scope": 1932, "src": "16577:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1921, "name": "bool", "nodeType": "ElementaryTypeName", "src": "16577:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "16576:6:3" }, "scope": 2252, "src": "16407:259:3", "stateMutability": "nonpayable", "superFunction": 1165, "visibility": "external" }, { "body": { "id": 2034, "nodeType": "Block", "src": "17317:918:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1951, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1947, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1945, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17362:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1946, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1936, "src": "17375:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17362:18:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1950, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1948, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17384:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 1949, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1938, "src": "17397:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17384:19:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "17362:41:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1955, "nodeType": "IfStatement", "src": "17358:83:3", "trueBody": { "id": 1954, "nodeType": "Block", "src": "17405:36:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 1952, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "17426:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1944, "id": 1953, "nodeType": "Return", "src": "17419:11:3" } ] } }, { "assignments": [ 1957 ], "declarations": [ { "constant": false, "id": 1957, "name": "_leftCurrent", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17451:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1956, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17451:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1959, "initialValue": { "argumentTypes": null, "id": 1958, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1936, "src": "17474:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17451:28:3" }, { "assignments": [ 1961 ], "declarations": [ { "constant": false, "id": 1961, "name": "_rightCurrent", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17489:21:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1960, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17489:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1963, "initialValue": { "argumentTypes": null, "id": 1962, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1938, "src": "17513:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17489:30:3" }, { "assignments": [ 1965 ], "declarations": [ { "constant": false, "id": 1965, "name": "_leftPrev", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17529:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1964, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17529:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1967, "initialValue": { "argumentTypes": null, "id": 1966, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1936, "src": "17549:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17529:25:3" }, { "assignments": [ 1969 ], "declarations": [ { "constant": false, "id": 1969, "name": "_rightPrev", "nodeType": "VariableDeclaration", "scope": 2034, "src": "17564:18:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1968, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17564:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 1971, "initialValue": { "argumentTypes": null, "id": 1970, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1938, "src": "17585:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "17564:27:3" }, { "body": { "id": 2016, "nodeType": "Block", "src": "17647:368:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 1988, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1986, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17665:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 1987, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17678:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17665:22:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2000, "nodeType": "IfStatement", "src": "17661:163:3", "trueBody": { "id": 1999, "nodeType": "Block", "src": "17689:135:3", "statements": [ { "expression": { "argumentTypes": null, "id": 1991, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1989, "name": "_leftCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1957, "src": "17707:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1990, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17722:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17707:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1992, "nodeType": "ExpressionStatement", "src": "17707:24:3" }, { "expression": { "argumentTypes": null, "id": 1997, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1993, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17759:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1994, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "17771:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 1996, "indexExpression": { "argumentTypes": null, "id": 1995, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "17785:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17771:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17759:36:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 1998, "nodeType": "ExpressionStatement", "src": "17759:36:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 2003, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2001, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17841:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 2002, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1934, "src": "17855:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17841:23:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2015, "nodeType": "IfStatement", "src": "17837:168:3", "trueBody": { "id": 2014, "nodeType": "Block", "src": "17866:139:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2006, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 2004, "name": "_rightCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1961, "src": "17884:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 2005, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17900:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17884:26:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2007, "nodeType": "ExpressionStatement", "src": "17884:26:3" }, { "expression": { "argumentTypes": null, "id": 2012, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 2008, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17938:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 2009, "name": "previousBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1193, "src": "17951:13:3", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes32_$", "typeString": "mapping(bytes32 => bytes32)" } }, "id": 2011, "indexExpression": { "argumentTypes": null, "id": 2010, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "17965:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17951:25:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "17938:38:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2013, "nodeType": "ExpressionStatement", "src": "17938:38:3" } ] } } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1978, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1976, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "17621:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 1977, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1940, "src": "17625:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "17621:10:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2017, "initializationExpression": { "assignments": [ 1973 ], "declarations": [ { "constant": false, "id": 1973, "name": "i", "nodeType": "VariableDeclaration", "scope": 2017, "src": "17606:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1972, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "17606:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1975, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1974, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17618:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "17606:13:3" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1984, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 1979, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "17633:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 1982, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17643:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "id": 1980, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "17637:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1981, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "17637:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 1983, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17637:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "17633:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1985, "nodeType": "ExpressionStatement", "src": "17633:12:3" }, "nodeType": "ForStatement", "src": "17602:413:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 2020, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2018, "name": "_leftCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1957, "src": "18028:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 2019, "name": "_rightCurrent", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1961, "src": "18044:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "18028:29:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2024, "nodeType": "IfStatement", "src": "18024:50:3", "trueBody": { "id": 2023, "nodeType": "Block", "src": "18059:15:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "66616c7365", "id": 2021, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "18067:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 1944, "id": 2022, "nodeType": "Return", "src": "18060:12:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 2027, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2025, "name": "_leftPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1965, "src": "18136:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 2026, "name": "_rightPrev", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1969, "src": "18149:10:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "18136:23:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2031, "nodeType": "IfStatement", "src": "18132:44:3", "trueBody": { "id": 2030, "nodeType": "Block", "src": "18161:15:3", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "66616c7365", "id": 2028, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "18169:5:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 1944, "id": 2029, "nodeType": "Return", "src": "18162:12:3" } ] } }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 2032, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "18224:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1944, "id": 2033, "nodeType": "Return", "src": "18217:11:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @param _limit The maximum number of blocks to check\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2035, "implemented": true, "kind": "function", "modifiers": [], "name": "_isMostRecentAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 1941, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1934, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17193:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1933, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17193:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1936, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17220:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1935, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17220:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1938, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17243:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 1937, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "17243:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1940, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17267:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1939, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "17267:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "17183:104:3" }, "returnParameters": { "id": 1944, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1943, "name": "", "nodeType": "VariableDeclaration", "scope": 2035, "src": "17311:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1942, "name": "bool", "nodeType": "ElementaryTypeName", "src": "17311:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "17310:6:3" }, "scope": 2252, "src": "17153:1082:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2055, "nodeType": "Block", "src": "18885:79:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2049, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2037, "src": "18924:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2050, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2039, "src": "18935:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2051, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2041, "src": "18942:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2052, "name": "_limit", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2043, "src": "18950:6:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2048, "name": "_isMostRecentAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2035, "src": "18902:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$_t_bytes32_$_t_uint256_$returns$_t_bool_$", "typeString": "function (bytes32,bytes32,bytes32,uint256) view returns (bool)" } }, "id": 2053, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18902:55:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 2047, "id": 2054, "nodeType": "Return", "src": "18895:62:3" } ] }, "documentation": "@notice Checks if a digest is an ancestor of the current one\n @dev Limit the amount of lookups (and thus gas usage) with _limit\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @param _limit The maximum number of blocks to check\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2056, "implemented": true, "kind": "function", "modifiers": [], "name": "isMostRecentAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2044, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2037, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18761:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2036, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "18761:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2039, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18788:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2038, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "18788:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2041, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18811:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2040, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "18811:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2043, "name": "_limit", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18835:14:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2042, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "18835:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "18751:104:3" }, "returnParameters": { "id": 2047, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2046, "name": "", "nodeType": "VariableDeclaration", "scope": 2056, "src": "18879:4:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 2045, "name": "bool", "nodeType": "ElementaryTypeName", "src": "18879:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "18878:6:3" }, "scope": 2252, "src": "18722:242:3", "stateMutability": "view", "superFunction": 1069, "visibility": "external" }, { "body": { "id": 2192, "nodeType": "Block", "src": "19520:1615:3", "statements": [ { "assignments": [ 2068 ], "declarations": [ { "constant": false, "id": 2068, "name": "_ancestorHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19530:23:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2067, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19530:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2072, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2070, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2058, "src": "19568:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 2069, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "19556:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 2071, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19556:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19530:48:3" }, { "assignments": [ 2074 ], "declarations": [ { "constant": false, "id": 2074, "name": "_leftHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19588:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2073, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19588:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2080, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2076, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "19622:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2077, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "19622:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2078, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19622:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 2075, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "19610:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 2079, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19610:28:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19588:50:3" }, { "assignments": [ 2082 ], "declarations": [ { "constant": false, "id": 2082, "name": "_rightHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19648:20:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2081, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19648:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2088, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2084, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "19683:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2085, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "19683:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2086, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19683:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 2083, "name": "_findHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1676, "src": "19671:11:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$", "typeString": "function (bytes32) view returns (uint256)" } }, "id": 2087, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19671:29:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19648:52:3" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2096, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2092, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2090, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "19732:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 2091, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "19747:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "19732:30:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2095, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2093, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "19766:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 2094, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "19782:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "19766:31:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "19732:65:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "412064657363656e64616e74206865696768742069732062656c6f772074686520616e636573746f7220686569676874", "id": 2097, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "19811:50:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_b58061f6326ff3d0324de253af04d745211e5ff4898fed03b468cbd3387ef7f2", "typeString": "literal_string \"A descendant height is below the ancestor height\"" }, "value": "A descendant height is below the ancestor height" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b58061f6326ff3d0324de253af04d745211e5ff4898fed03b468cbd3387ef7f2", "typeString": "literal_string \"A descendant height is below the ancestor height\"" } ], "id": 2089, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 5026, 5027 ], "referencedDeclaration": 5027, "src": "19711:7:3", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 2098, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19711:151:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2099, "nodeType": "ExpressionStatement", "src": "19711:151:3" }, { "assignments": [ 2101 ], "declarations": [ { "constant": false, "id": 2101, "name": "_nextPeriodStartHeight", "nodeType": "VariableDeclaration", "scope": 2192, "src": "19970:30:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2100, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19970:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 2111, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2109, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2107, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "20033:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 2108, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20051:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "20033:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "32303136", "id": 2104, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20023:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" } ], "expression": { "argumentTypes": null, "id": 2102, "name": "_ancestorHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2068, "src": "20003:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2103, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4365, "src": "20003:19:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2105, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20003:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2106, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4340, "src": "20003:29:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2110, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20003:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "19970:86:3" }, { "assignments": [ 2113 ], "declarations": [ { "constant": false, "id": 2113, "name": "_leftInPeriod", "nodeType": "VariableDeclaration", "scope": 2192, "src": "20066:18:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 2112, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20066:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 2117, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2116, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2114, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "20087:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 2115, "name": "_nextPeriodStartHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2101, "src": "20101:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20087:36:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "VariableDeclarationStatement", "src": "20066:57:3" }, { "assignments": [ 2119 ], "declarations": [ { "constant": false, "id": 2119, "name": "_rightInPeriod", "nodeType": "VariableDeclaration", "scope": 2192, "src": "20133:19:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 2118, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20133:4:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 2123, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2122, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2120, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "20155:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "id": 2121, "name": "_nextPeriodStartHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2101, "src": "20170:22:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20155:37:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "VariableDeclarationStatement", "src": "20133:59:3" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2127, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2125, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20532:14:3", "subExpression": { "argumentTypes": null, "id": 2124, "name": "_leftInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2113, "src": "20533:13:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 2126, "name": "_rightInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2119, "src": "20550:14:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "20532:32:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2133, "nodeType": "IfStatement", "src": "20528:63:3", "trueBody": { "id": 2132, "nodeType": "Block", "src": "20566:25:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2128, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "20574:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2129, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20574:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2130, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20574:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2131, "nodeType": "Return", "src": "20567:22:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2137, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2134, "name": "_leftInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2113, "src": "20604:13:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 2136, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20621:15:3", "subExpression": { "argumentTypes": null, "id": 2135, "name": "_rightInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2119, "src": "20622:14:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "20604:32:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 2143, "nodeType": "IfStatement", "src": "20600:64:3", "trueBody": { "id": 2142, "nodeType": "Block", "src": "20638:26:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2138, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "20646:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2139, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20646:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20646:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2141, "nodeType": "Return", "src": "20639:23:3" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2146, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2144, "name": "_leftInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2113, "src": "20677:13:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 2145, "name": "_rightInPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2119, "src": "20694:14:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "20677:31:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 2190, "nodeType": "Block", "src": "20812:317:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2178, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2164, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "20901:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2165, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "20901:23:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 2166, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20901:25:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2161, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2159, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "20877:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 2160, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20891:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "20877:18:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 2162, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "20876:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2163, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "mul", "nodeType": "MemberAccess", "referencedDeclaration": 4305, "src": "20876:24:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2167, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20876:51:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 2168, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "20875:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2174, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "20973:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2175, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "extractDifficulty", "nodeType": "MemberAccess", "referencedDeclaration": 3864, "src": "20973:24:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256)" } }, "id": 2176, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20973:26:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2171, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2169, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "20948:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "32303136", "id": 2170, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20963:4:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2016_by_1", "typeString": "int_const 2016" }, "value": "2016" }, "src": "20948:19:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 2172, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "20947:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2173, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "mul", "nodeType": "MemberAccess", "referencedDeclaration": 4305, "src": "20947:25:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2177, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20947:53:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20875:125:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 2188, "nodeType": "Block", "src": "21064:55:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2184, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "21089:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2185, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "21089:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2186, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21089:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2187, "nodeType": "Return", "src": "21082:22:3" } ] }, "id": 2189, "nodeType": "IfStatement", "src": "20871:248:3", "trueBody": { "id": 2183, "nodeType": "Block", "src": "21002:56:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2179, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "21027:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2180, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "21027:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2181, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21027:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2182, "nodeType": "Return", "src": "21020:23:3" } ] } } ] }, "id": 2191, "nodeType": "IfStatement", "src": "20673:456:3", "trueBody": { "id": 2158, "nodeType": "Block", "src": "20710:96:3", "statements": [ { "expression": { "argumentTypes": null, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2149, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2147, "name": "_leftHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2074, "src": "20731:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 2148, "name": "_rightHeight", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2082, "src": "20746:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "20731:27:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2153, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2062, "src": "20779:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2154, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20779:14:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2155, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20779:16:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2156, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "Conditional", "src": "20731:64:3", "trueExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 2150, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2060, "src": "20761:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2151, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "hash256", "nodeType": "MemberAccess", "referencedDeclaration": 2792, "src": "20761:13:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 2152, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20761:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2066, "id": 2157, "nodeType": "Return", "src": "20724:71:3" } ] } } ] }, "documentation": "@notice Decides which header is heaviest from the ancestor\n @dev Does not support reorgs above 2017 blocks (:\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2193, "implemented": true, "kind": "function", "modifiers": [], "name": "_heaviestFromAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2063, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2058, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19407:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2057, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "19407:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2060, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19434:18:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2059, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "19434:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2062, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19462:19:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2061, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "19462:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "19397:90:3" }, "returnParameters": { "id": 2066, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2065, "name": "", "nodeType": "VariableDeclaration", "scope": 2193, "src": "19511:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2064, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "19511:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "19510:9:3" }, "scope": 2252, "src": "19367:1768:3", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2210, "nodeType": "Block", "src": "21694:71:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2205, "name": "_ancestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2195, "src": "21733:9:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 2206, "name": "_left", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2197, "src": "21744:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, { "argumentTypes": null, "id": 2207, "name": "_right", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2199, "src": "21751:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "id": 2204, "name": "_heaviestFromAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2193, "src": "21711:21:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes32,bytes memory,bytes memory) view returns (bytes32)" } }, "id": 2208, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21711:47:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2203, "id": 2209, "nodeType": "Return", "src": "21704:54:3" } ] }, "documentation": "@notice Decides which header is heaviest from the ancestor\n @dev Does not support reorgs above 2017 blocks (:\n @param _ancestor The prospective shared ancestor\n @param _left A chain tip\n @param _right A chain tip\n @return true if it is the most recent common ancestor within _limit, false otherwise", "id": 2211, "implemented": true, "kind": "function", "modifiers": [], "name": "heaviestFromAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2200, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2195, "name": "_ancestor", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21577:17:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2194, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "21577:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2197, "name": "_left", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21604:20:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 2196, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "21604:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2199, "name": "_right", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21634:21:3", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 2198, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "21634:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "21567:94:3" }, "returnParameters": { "id": 2203, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2202, "name": "", "nodeType": "VariableDeclaration", "scope": 2211, "src": "21685:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2201, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "21685:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "21684:9:3" }, "scope": 2252, "src": "21538:227:3", "stateMutability": "view", "superFunction": 1132, "visibility": "external" }, { "body": { "id": 2218, "nodeType": "Block", "src": "22023:38:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2216, "name": "currentEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1199, "src": "22038:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 2215, "id": 2217, "nodeType": "Return", "src": "22031:23:3" } ] }, "documentation": "@notice Getter for currentEpochDiff\n @dev This is updated when a new heavist header has a new diff\n @return The difficulty of the bestKnownDigest", "id": 2219, "implemented": true, "kind": "function", "modifiers": [], "name": "getCurrentEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 2212, "nodeType": "ParameterList", "parameters": [], "src": "21988:2:3" }, "returnParameters": { "id": 2215, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2214, "name": "", "nodeType": "VariableDeclaration", "scope": 2219, "src": "22014:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2213, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "22014:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "22013:9:3" }, "scope": 2252, "src": "21954:107:3", "stateMutability": "view", "superFunction": 1074, "visibility": "external" }, { "body": { "id": 2226, "nodeType": "Block", "src": "22307:35:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2224, "name": "prevEpochDiff", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1201, "src": "22322:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 2223, "id": 2225, "nodeType": "Return", "src": "22315:20:3" } ] }, "documentation": "@notice Getter for prevEpochDiff\n @dev This is updated when a difficulty change is accepted\n @return The difficulty of the previous epoch", "id": 2227, "implemented": true, "kind": "function", "modifiers": [], "name": "getPrevEpochDifficulty", "nodeType": "FunctionDefinition", "parameters": { "id": 2220, "nodeType": "ParameterList", "parameters": [], "src": "22272:2:3" }, "returnParameters": { "id": 2223, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2222, "name": "", "nodeType": "VariableDeclaration", "scope": 2227, "src": "22298:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2221, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "22298:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "22297:9:3" }, "scope": 2252, "src": "22241:101:3", "stateMutability": "view", "superFunction": 1079, "visibility": "external" }, { "body": { "id": 2234, "nodeType": "Block", "src": "22566:36:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2232, "name": "relayGenesis", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1185, "src": "22583:12:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2231, "id": 2233, "nodeType": "Return", "src": "22576:19:3" } ] }, "documentation": "@notice Getter for relayGenesis\n @dev This is an initialization parameter\n @return The hash of the first block of the relay", "id": 2235, "implemented": true, "kind": "function", "modifiers": [], "name": "getRelayGenesis", "nodeType": "FunctionDefinition", "parameters": { "id": 2228, "nodeType": "ParameterList", "parameters": [], "src": "22533:2:3" }, "returnParameters": { "id": 2231, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2230, "name": "", "nodeType": "VariableDeclaration", "scope": 2235, "src": "22557:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2229, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "22557:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "22556:9:3" }, "scope": 2252, "src": "22509:93:3", "stateMutability": "view", "superFunction": 1084, "visibility": "public" }, { "body": { "id": 2242, "nodeType": "Block", "src": "22838:39:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2240, "name": "bestKnownDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1187, "src": "22855:15:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2239, "id": 2241, "nodeType": "Return", "src": "22848:22:3" } ] }, "documentation": "@notice Getter for bestKnownDigest\n @dev This updated only by calling markNewHeaviest\n @return The hash of the best marked chain tip", "id": 2243, "implemented": true, "kind": "function", "modifiers": [], "name": "getBestKnownDigest", "nodeType": "FunctionDefinition", "parameters": { "id": 2236, "nodeType": "ParameterList", "parameters": [], "src": "22805:2:3" }, "returnParameters": { "id": 2239, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2238, "name": "", "nodeType": "VariableDeclaration", "scope": 2243, "src": "22829:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2237, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "22829:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "22828:9:3" }, "scope": 2252, "src": "22778:99:3", "stateMutability": "view", "superFunction": 1089, "visibility": "public" }, { "body": { "id": 2250, "nodeType": "Block", "src": "23139:47:3", "statements": [ { "expression": { "argumentTypes": null, "id": 2248, "name": "lastReorgCommonAncestor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1189, "src": "23156:23:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 2247, "id": 2249, "nodeType": "Return", "src": "23149:30:3" } ] }, "documentation": "@notice Getter for relayGenesis\n @dev This is updated only by calling markNewHeaviest\n @return The hash of the shared ancestor of the most recent fork", "id": 2251, "implemented": true, "kind": "function", "modifiers": [], "name": "getLastReorgCommonAncestor", "nodeType": "FunctionDefinition", "parameters": { "id": 2244, "nodeType": "ParameterList", "parameters": [], "src": "23106:2:3" }, "returnParameters": { "id": 2247, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2246, "name": "", "nodeType": "VariableDeclaration", "scope": 2251, "src": "23130:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 2245, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "23130:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "23129:9:3" }, "scope": 2252, "src": "23071:115:3", "stateMutability": "view", "superFunction": 1094, "visibility": "public" } ], "scope": 2253, "src": "2004:21184:3" } ], "src": "0:23189:3" }, "compiler": { "name": "solc", "version": "0.5.10+commit.5a6ea5b1.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.0.23", "updatedAt": "2020-04-10T19:37:05.770Z", "devdoc": { "methods": { "addHeaders(bytes,bytes)": { "details": "We check integrity and consistency of the header chain", "params": { "_anchor": "The header immediately preceeding the new chain", "_headers": "A tightly-packed list of 80-byte Bitcoin headers" }, "return": "True if successfully written, error otherwise" }, "addHeadersWithRetarget(bytes,bytes,bytes)": { "details": "Checks the retarget, the heights, and the linkage", "params": { "_headers": "A tightly-packed list of 80-byte Bitcoin headers", "_oldPeriodEndHeader": "The last header in the difficulty period being closed", "_oldPeriodStartHeader": "The first header in the difficulty period being closed" }, "return": "True if successfully written, error otherwise" }, "constructor": { "details": "We don't check this AT ALL really. Don't use relays with bad genesis", "params": { "_genesisHeader": "The starting header", "_height": "The starting height", "_periodStart": "The hash of the first header in the genesis epoch" } }, "findAncestor(bytes32,uint256)": { "details": "Will fail if the header is unknown", "params": { "_digest": "The header digest to search for" }, "return": "The height of the header, or error if unknown" }, "findHeight(bytes32)": { "details": "Will fail if the header is unknown", "params": { "_digest": "The header digest to search for" }, "return": "The height of the header, or error if unknown" }, "getBestKnownDigest()": { "details": "This updated only by calling markNewHeaviest", "return": "The hash of the best marked chain tip" }, "getCurrentEpochDifficulty()": { "details": "This is updated when a new heavist header has a new diff", "return": "The difficulty of the bestKnownDigest" }, "getLastReorgCommonAncestor()": { "details": "This is updated only by calling markNewHeaviest", "return": "The hash of the shared ancestor of the most recent fork" }, "getPrevEpochDifficulty()": { "details": "This is updated when a difficulty change is accepted", "return": "The difficulty of the previous epoch" }, "getRelayGenesis()": { "details": "This is an initialization parameter", "return": "The hash of the first block of the relay" }, "heaviestFromAncestor(bytes32,bytes,bytes)": { "details": "Does not support reorgs above 2017 blocks (:", "params": { "_ancestor": "The prospective shared ancestor", "_left": "A chain tip", "_right": "A chain tip" }, "return": "true if it is the most recent common ancestor within _limit, false otherwise" }, "isAncestor(bytes32,bytes32,uint256)": { "details": "Limit the amount of lookups (and thus gas usage) with _limit", "params": { "_ancestor": "The prospective ancestor", "_descendant": "The descendant to check", "_limit": "The maximum number of blocks to check" }, "return": "true if ancestor is at most limit blocks lower than descendant, otherwise false" }, "isMostRecentAncestor(bytes32,bytes32,bytes32,uint256)": { "details": "Limit the amount of lookups (and thus gas usage) with _limit", "params": { "_ancestor": "The prospective shared ancestor", "_left": "A chain tip", "_limit": "The maximum number of blocks to check", "_right": "A chain tip" }, "return": "true if it is the most recent common ancestor within _limit, false otherwise" }, "markNewHeaviest(bytes32,bytes,bytes,uint256)": { "details": "We don't check this AT ALL really. Don't use relays with bad genesis", "params": { "_ancestor": "The digest of the most recent common ancestor", "_currentBest": "The 80-byte header referenced by bestKnownDigest", "_limit": "Limit the amount of traversal of the chain", "_newBest": "The 80-byte header to mark as the new best" }, "return": "True if successfully updates bestKnownDigest, error otherwise" } } }, "userdoc": { "methods": { "addHeaders(bytes,bytes)": { "notice": "Adds headers to storage after validating" }, "addHeadersWithRetarget(bytes,bytes,bytes)": { "notice": "Adds headers to storage, performs additional validation of retarget" }, "constructor": "Gives a starting point for the relay", "findAncestor(bytes32,uint256)": { "notice": "Finds an ancestor for a block by its digest" }, "findHeight(bytes32)": { "notice": "Finds the height of a header by its digest" }, "getBestKnownDigest()": { "notice": "Getter for bestKnownDigest" }, "getCurrentEpochDifficulty()": { "notice": "Getter for currentEpochDiff" }, "getLastReorgCommonAncestor()": { "notice": "Getter for relayGenesis" }, "getPrevEpochDifficulty()": { "notice": "Getter for prevEpochDiff" }, "getRelayGenesis()": { "notice": "Getter for relayGenesis" }, "heaviestFromAncestor(bytes32,bytes,bytes)": { "notice": "Decides which header is heaviest from the ancestor" }, "isAncestor(bytes32,bytes32,uint256)": { "notice": "Checks if a digest is an ancestor of the current one" }, "isMostRecentAncestor(bytes32,bytes32,bytes32,uint256)": { "notice": "Checks if a digest is an ancestor of the current one" }, "markNewHeaviest(bytes32,bytes,bytes,uint256)": { "notice": "Gives a starting point for the relay" } } } }