{ "contractName": "SatWeiPriceFeed", "abi": [ { "inputs": [], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "constant": true, "inputs": [], "name": "isOwner", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [], "name": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "_tbtcSystemAddress", "type": "address" }, { "internalType": "contract IMedianizer", "name": "_ETHBTCPriceFeed", "type": "address" } ], "name": "initialize", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "getPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getWorkingEthBtcFeed", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "contract IMedianizer", "name": "_newEthBtcFeed", "type": "address" } ], "name": "addEthBtcFeed", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.17+commit.d19bba13\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"contract IMedianizer\",\"name\":\"_newEthBtcFeed\",\"type\":\"address\"}],\"name\":\"addEthBtcFeed\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getPrice\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getWorkingEthBtcFeed\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"_tbtcSystemAddress\",\"type\":\"address\"},{\"internalType\":\"contract IMedianizer\",\"name\":\"_ETHBTCPriceFeed\",\"type\":\"address\"}],\"name\":\"initialize\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isOwner\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Used ETH/USD medianizer values converted to sat/wei.\",\"methods\":{\"addEthBtcFeed(address)\":{\"details\":\"IMedianizer must be active in order to add.\"},\"getPrice()\":{\"details\":\"This does not account for any 'Flippening' event.\",\"return\":\"The price of one satoshi in wei.\"},\"getWorkingEthBtcFeed()\":{\"return\":\"The address of the first Active Medianizer. address(0) if none found\"},\"initialize(address,address)\":{\"params\":{\"_ETHBTCPriceFeed\":\"The ETHBTC price feed address.\",\"_tbtcSystemAddress\":\"Address of the `TBTCSystem` contract. Used for access control.\"}},\"isOwner()\":{\"details\":\"Returns true if the caller is the current owner.\"},\"owner()\":{\"details\":\"Returns the address of the current owner.\"},\"renounceOwnership()\":{\"details\":\"Leaves the contract without owner. It will not be possible to call `onlyOwner` functions anymore. Can only be called by the current owner. * > Note: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner.\"},\"transferOwnership(address)\":{\"details\":\"Transfers ownership of the contract to a new account (`newOwner`). Can only be called by the current owner.\"}}},\"userdoc\":{\"methods\":{\"addEthBtcFeed(address)\":{\"notice\":\"Add _newEthBtcFeed to internal ethBtcFeeds array.\"},\"getPrice()\":{\"notice\":\"Get the current price of 1 satoshi in wei.\"},\"getWorkingEthBtcFeed()\":{\"notice\":\"Get the first active Medianizer contract from the ethBtcFeeds array.\"},\"initialize(address,address)\":{\"notice\":\"Initialises the addresses of the ETHBTC price feeds.\"}},\"notice\":\"satoshi/wei price 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"source": "pragma solidity 0.5.17;\n\nimport {SafeMath} from \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\nimport \"openzeppelin-solidity/contracts/ownership/Ownable.sol\";\nimport \"../external/IMedianizer.sol\";\nimport \"../interfaces/ISatWeiPriceFeed.sol\";\n\n/// @notice satoshi/wei price feed.\n/// @dev Used ETH/USD medianizer values converted to sat/wei.\ncontract SatWeiPriceFeed is Ownable, ISatWeiPriceFeed {\n using SafeMath for uint256;\n\n bool private _initialized = false;\n address internal tbtcSystemAddress;\n\n IMedianizer[] private ethBtcFeeds;\n\n constructor() public {\n // solium-disable-previous-line no-empty-blocks\n }\n\n /// @notice Initialises the addresses of the ETHBTC price feeds.\n /// @param _tbtcSystemAddress Address of the `TBTCSystem` contract. Used for access control.\n /// @param _ETHBTCPriceFeed The ETHBTC price feed address.\n function initialize(\n address _tbtcSystemAddress,\n IMedianizer _ETHBTCPriceFeed\n ) external onlyOwner {\n require(!_initialized, \"Already initialized.\");\n tbtcSystemAddress = _tbtcSystemAddress;\n ethBtcFeeds.push(_ETHBTCPriceFeed);\n _initialized = true;\n }\n\n /// @notice Get the current price of 1 satoshi in wei.\n /// @dev This does not account for any 'Flippening' event.\n /// @return The price of one satoshi in wei.\n function getPrice() external view onlyTbtcSystem returns (uint256) {\n bool ethBtcActive = false;\n uint256 ethBtc = 0;\n\n for (uint256 i = 0; i < ethBtcFeeds.length; i++) {\n (ethBtc, ethBtcActive) = ethBtcFeeds[i].peek();\n if (ethBtcActive) {\n break;\n }\n }\n\n require(ethBtcActive, \"Price feed offline\");\n\n // convert eth/btc to sat/wei\n // We typecast down to uint128, because the first 128 bits of\n // the medianizer value is unrelated to the price.\n return uint256(10**28).div(uint256(uint128(ethBtc)));\n }\n\n /// @notice Get the first active Medianizer contract from the ethBtcFeeds array.\n /// @return The address of the first Active Medianizer. address(0) if none found\n function getWorkingEthBtcFeed() external view returns (address) {\n bool ethBtcActive;\n\n for (uint256 i = 0; i < ethBtcFeeds.length; i++) {\n (, ethBtcActive) = ethBtcFeeds[i].peek();\n if (ethBtcActive) {\n return address(ethBtcFeeds[i]);\n }\n }\n return address(0);\n }\n\n /// @notice Add _newEthBtcFeed to internal ethBtcFeeds array.\n /// @dev IMedianizer must be active in order to add.\n function addEthBtcFeed(IMedianizer _newEthBtcFeed) external onlyTbtcSystem {\n bool ethBtcActive;\n (, ethBtcActive) = _newEthBtcFeed.peek();\n require(ethBtcActive, \"Cannot add inactive feed\");\n ethBtcFeeds.push(_newEthBtcFeed);\n }\n\n /// @notice Function modifier ensures modified function is only called by tbtcSystemAddress.\n modifier onlyTbtcSystem() {\n require(\n msg.sender == tbtcSystemAddress,\n \"Caller must be tbtcSystem contract\"\n );\n _;\n }\n}\n", "sourcePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/price-feed/SatWeiPriceFeed.sol", "ast": { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/price-feed/SatWeiPriceFeed.sol", "exportedSymbols": { "SatWeiPriceFeed": [ 5728 ] }, "id": 5729, "nodeType": "SourceUnit", "nodes": [ { "id": 5527, "literals": [ "solidity", "0.5", ".17" ], "nodeType": "PragmaDirective", "src": "0:23:13" }, { "absolutePath": "openzeppelin-solidity/contracts/math/SafeMath.sol", "file": "openzeppelin-solidity/contracts/math/SafeMath.sol", "id": 5529, "nodeType": "ImportDirective", "scope": 5729, "sourceUnit": 16856, "src": "25:75:13", "symbolAliases": [ { "foreign": 5528, "local": null } ], "unitAlias": "" }, { "absolutePath": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "file": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "id": 5530, "nodeType": "ImportDirective", "scope": 5729, "sourceUnit": 16967, "src": "101:63:13", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/external/IMedianizer.sol", "file": "../external/IMedianizer.sol", "id": 5531, "nodeType": "ImportDirective", "scope": 5729, "sourceUnit": 5434, "src": "165:37:13", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/interfaces/ISatWeiPriceFeed.sol", "file": "../interfaces/ISatWeiPriceFeed.sol", "id": 5532, "nodeType": "ImportDirective", "scope": 5729, "sourceUnit": 5448, "src": "203:44:13", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 5533, "name": "Ownable", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 16966, "src": "375:7:13", "typeDescriptions": { "typeIdentifier": "t_contract$_Ownable_$16966", "typeString": "contract Ownable" } }, "id": 5534, "nodeType": "InheritanceSpecifier", "src": "375:7:13" }, { "arguments": null, "baseName": { "contractScope": null, "id": 5535, "name": "ISatWeiPriceFeed", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5447, "src": "384:16:13", "typeDescriptions": { "typeIdentifier": "t_contract$_ISatWeiPriceFeed_$5447", "typeString": "contract ISatWeiPriceFeed" } }, "id": 5536, "nodeType": "InheritanceSpecifier", "src": "384:16:13" } ], "contractDependencies": [ 5447, 16966 ], "contractKind": "contract", "documentation": "@notice satoshi/wei price feed.\n @dev Used ETH/USD medianizer values converted to sat/wei.", "fullyImplemented": true, "id": 5728, "linearizedBaseContracts": [ 5728, 5447, 16966 ], "name": "SatWeiPriceFeed", "nodeType": "ContractDefinition", "nodes": [ { "id": 5539, "libraryName": { "contractScope": null, "id": 5537, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 16855, "src": "413:8:13", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$16855", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "407:27:13", "typeName": { "id": 5538, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "426:7:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 5542, "name": "_initialized", "nodeType": "VariableDeclaration", "scope": 5728, "src": "440:33:13", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5540, "name": "bool", "nodeType": "ElementaryTypeName", "src": "440:4:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": { "argumentTypes": null, "hexValue": "66616c7365", "id": 5541, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "468:5:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "visibility": "private" }, { "constant": false, "id": 5544, "name": "tbtcSystemAddress", "nodeType": "VariableDeclaration", "scope": 5728, "src": "479:34:13", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5543, "name": "address", "nodeType": "ElementaryTypeName", "src": "479:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5547, "name": "ethBtcFeeds", "nodeType": "VariableDeclaration", "scope": 5728, "src": "520:33:13", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_contract$_IMedianizer_$5433_$dyn_storage", "typeString": "contract IMedianizer[]" }, "typeName": { "baseType": { "contractScope": null, "id": 5545, "name": "IMedianizer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5433, "src": "520:11:13", "typeDescriptions": { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } }, "id": 5546, "length": null, "nodeType": "ArrayTypeName", "src": "520:13:13", "typeDescriptions": { "typeIdentifier": "t_array$_t_contract$_IMedianizer_$5433_$dyn_storage_ptr", "typeString": "contract IMedianizer[]" } }, "value": null, "visibility": "private" }, { "body": { "id": 5550, "nodeType": "Block", "src": "581:63:13", "statements": [] }, "documentation": null, "id": 5551, "implemented": true, "kind": "constructor", "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 5548, "nodeType": "ParameterList", "parameters": [], "src": "571:2:13" }, "returnParameters": { "id": 5549, "nodeType": "ParameterList", "parameters": [], "src": "581:0:13" }, "scope": 5728, "src": "560:84:13", "stateMutability": "nonpayable", "superFunction": 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"stateMutability": "view", "superFunction": 5441, "visibility": "external" }, { "body": { "id": 5685, "nodeType": "Block", "src": "2219:279:13", "statements": [ { "assignments": [ 5648 ], "declarations": [ { "constant": false, "id": 5648, "name": "ethBtcActive", "nodeType": "VariableDeclaration", "scope": 5685, "src": "2229:17:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5647, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2229:4:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 5649, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "2229:17:13" }, { "body": { "id": 5679, "nodeType": "Block", "src": "2306:159:13", "statements": [ { "expression": { "argumentTypes": null, "id": 5668, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, 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5667, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2339:21:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_bool_$", "typeString": "tuple(uint256,bool)" } }, "src": "2320:40:13", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5669, "nodeType": "ExpressionStatement", "src": "2320:40:13" }, { "condition": { "argumentTypes": null, "id": 5670, "name": "ethBtcActive", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5648, "src": "2378:12:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 5678, "nodeType": "IfStatement", "src": "2374:81:13", "trueBody": { "id": 5677, "nodeType": "Block", "src": "2392:63:13", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5672, "name": "ethBtcFeeds", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5547, "src": "2425:11:13", "typeDescriptions": { "typeIdentifier": "t_array$_t_contract$_IMedianizer_$5433_$dyn_storage", "typeString": "contract IMedianizer[] storage ref" } }, "id": 5674, "indexExpression": { "argumentTypes": null, "id": 5673, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5651, "src": "2437:1:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2425:14:13", "typeDescriptions": { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } ], "id": 5671, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2417:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5675, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2417:23:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 5646, "id": 5676, "nodeType": "Return", "src": "2410:30:13" } ] } } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5657, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5654, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5651, "src": "2277:1:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5655, "name": "ethBtcFeeds", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5547, "src": "2281:11:13", "typeDescriptions": { "typeIdentifier": "t_array$_t_contract$_IMedianizer_$5433_$dyn_storage", "typeString": "contract IMedianizer[] storage ref" } }, "id": 5656, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2281:18:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2277:22:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 5680, "initializationExpression": { "assignments": [ 5651 ], "declarations": [ { "constant": false, "id": 5651, "name": "i", "nodeType": "VariableDeclaration", "scope": 5680, "src": "2262:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5650, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2262:7:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 5653, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 5652, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2274:1:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "2262:13:13" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 5659, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "2301:3:13", "subExpression": { "argumentTypes": null, "id": 5658, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5651, "src": "2301:1:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 5660, "nodeType": "ExpressionStatement", "src": "2301:3:13" }, "nodeType": "ForStatement", "src": "2257:208:13" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5682, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2489:1:13", "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": 5681, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2481:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5683, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2481:10:13", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "functionReturnParameters": 5646, "id": 5684, "nodeType": "Return", "src": "2474:17:13" } ] }, "documentation": "@notice Get the first active Medianizer contract from the ethBtcFeeds array.\n @return The address of the first Active Medianizer. address(0) if none found", "id": 5686, "implemented": true, "kind": "function", "modifiers": [], "name": "getWorkingEthBtcFeed", "nodeType": "FunctionDefinition", "parameters": { "id": 5643, "nodeType": "ParameterList", "parameters": [], "src": "2184:2:13" }, "returnParameters": { "id": 5646, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5645, "name": "", "nodeType": "VariableDeclaration", "scope": 5686, "src": "2210:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5644, "name": "address", "nodeType": "ElementaryTypeName", "src": "2210:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2209:9:13" }, "scope": 5728, "src": "2155:343:13", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": { "id": 5714, "nodeType": "Block", "src": "2702:185:13", "statements": [ { "assignments": [ 5694 ], "declarations": [ { "constant": false, "id": 5694, "name": "ethBtcActive", "nodeType": "VariableDeclaration", "scope": 5714, "src": "2712:17:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5693, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2712:4:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 5695, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "2712:17:13" }, { "expression": { "argumentTypes": null, "id": 5701, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "components": [ null, { "argumentTypes": null, "id": 5696, "name": "ethBtcActive", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5694, "src": "2742:12:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 5697, "isConstant": false, "isInlineArray": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "TupleExpression", "src": "2739:16:13", "typeDescriptions": { "typeIdentifier": "t_tuple$__$_t_bool_$", "typeString": "tuple(,bool)" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 5698, "name": "_newEthBtcFeed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5688, "src": "2758:14:13", "typeDescriptions": { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } }, "id": 5699, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "peek", "nodeType": "MemberAccess", "referencedDeclaration": 5432, "src": "2758:19:13", "typeDescriptions": { "typeIdentifier": "t_function_external_view$__$returns$_t_uint256_$_t_bool_$", "typeString": "function () view external returns (uint256,bool)" } }, "id": 5700, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2758:21:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_bool_$", "typeString": "tuple(uint256,bool)" } }, "src": "2739:40:13", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5702, "nodeType": "ExpressionStatement", "src": "2739:40:13" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5704, "name": "ethBtcActive", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5694, "src": "2797:12:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "43616e6e6f742061646420696e6163746976652066656564", "id": 5705, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2811:26:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_4973a1a6bce3b03a2fb578432748e4e8c87ac58dc28236886e6c6c2854cb675b", "typeString": "literal_string \"Cannot add inactive feed\"" }, "value": "Cannot add inactive feed" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_4973a1a6bce3b03a2fb578432748e4e8c87ac58dc28236886e6c6c2854cb675b", "typeString": "literal_string \"Cannot add inactive feed\"" } ], "id": 5703, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 18363, 18364 ], "referencedDeclaration": 18364, "src": "2789:7:13", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 5706, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2789:49:13", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5707, "nodeType": "ExpressionStatement", "src": "2789:49:13" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5711, "name": "_newEthBtcFeed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5688, "src": "2865:14:13", "typeDescriptions": { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } ], "expression": { "argumentTypes": null, "id": 5708, "name": "ethBtcFeeds", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5547, "src": "2848:11:13", "typeDescriptions": { "typeIdentifier": "t_array$_t_contract$_IMedianizer_$5433_$dyn_storage", "typeString": "contract IMedianizer[] storage ref" } }, "id": 5710, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "push", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2848:16:13", "typeDescriptions": { "typeIdentifier": "t_function_arraypush_nonpayable$_t_contract$_IMedianizer_$5433_$returns$_t_uint256_$", "typeString": "function (contract IMedianizer) returns (uint256)" } }, "id": 5712, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2848:32:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 5713, "nodeType": "ExpressionStatement", "src": "2848:32:13" } ] }, "documentation": "@notice Add _newEthBtcFeed to internal ethBtcFeeds array.\n @dev IMedianizer must be active in order to add.", "id": 5715, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 5691, "modifierName": { "argumentTypes": null, "id": 5690, "name": "onlyTbtcSystem", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5727, "src": "2687:14:13", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "2687:14:13" } ], "name": "addEthBtcFeed", "nodeType": "FunctionDefinition", "parameters": { "id": 5689, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5688, "name": "_newEthBtcFeed", "nodeType": "VariableDeclaration", "scope": 5715, "src": "2650:26:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" }, "typeName": { "contractScope": null, "id": 5687, "name": "IMedianizer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5433, "src": "2650:11:13", "typeDescriptions": { "typeIdentifier": "t_contract$_IMedianizer_$5433", "typeString": "contract IMedianizer" } }, "value": null, "visibility": "internal" } ], "src": "2649:28:13" }, "returnParameters": { "id": 5692, "nodeType": "ParameterList", "parameters": [], "src": "2702:0:13" }, "scope": 5728, "src": "2627:260:13", "stateMutability": "nonpayable", "superFunction": 5446, "visibility": "external" }, { "body": { "id": 5726, "nodeType": "Block", "src": "3016:140:13", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5721, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5718, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18360, "src": "3047:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5719, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3047:10:13", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5720, "name": "tbtcSystemAddress", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5544, "src": "3061:17:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "3047:31:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "43616c6c6572206d757374206265207462746353797374656d20636f6e7472616374", "id": 5722, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, 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"ethereum", "devdoc": { "details": "Used ETH/USD medianizer values converted to sat/wei.", "methods": { "addEthBtcFeed(address)": { "details": "IMedianizer must be active in order to add." }, "getPrice()": { "details": "This does not account for any 'Flippening' event.", "return": "The price of one satoshi in wei." }, "getWorkingEthBtcFeed()": { "return": "The address of the first Active Medianizer. address(0) if none found" }, "initialize(address,address)": { "params": { "_ETHBTCPriceFeed": "The ETHBTC price feed address.", "_tbtcSystemAddress": "Address of the `TBTCSystem` contract. Used for access control." } }, "isOwner()": { "details": "Returns true if the caller is the current owner." }, "owner()": { "details": "Returns the address of the current owner." }, "renounceOwnership()": { "details": "Leaves the contract without owner. It will not be possible to call `onlyOwner` functions anymore. Can only be called by the current owner. * > Note: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner." }, "transferOwnership(address)": { "details": "Transfers ownership of the contract to a new account (`newOwner`). Can only be called by the current owner." } } }, "userdoc": { "methods": { "addEthBtcFeed(address)": { "notice": "Add _newEthBtcFeed to internal ethBtcFeeds array." }, "getPrice()": { "notice": "Get the current price of 1 satoshi in wei." }, "getWorkingEthBtcFeed()": { "notice": "Get the first active Medianizer contract from the ethBtcFeeds array." }, "initialize(address,address)": { "notice": "Initialises the addresses of the ETHBTC price feeds." } }, "notice": "satoshi/wei price feed." } }