{ "fileName": "GSNRecipient.sol", "contractName": "GSNRecipientUpgradeSafe", "source": "pragma solidity ^0.6.0;\n\nimport \"./IRelayRecipient.sol\";\nimport \"./IRelayHub.sol\";\nimport \"./Context.sol\";\nimport \"../Initializable.sol\";\n\n/**\n * @dev Base GSN recipient contract: includes the {IRelayRecipient} interface\n * and enables GSN support on all contracts in the inheritance tree.\n *\n * TIP: This contract is abstract. The functions {IRelayRecipient-acceptRelayedCall},\n * {_preRelayedCall}, and {_postRelayedCall} are not implemented and must be\n * provided by derived contracts. See the\n * xref:ROOT:gsn-strategies.adoc#gsn-strategies[GSN strategies] for more\n * information on how to use the pre-built {GSNRecipientSignature} and\n * {GSNRecipientERC20Fee}, or how to write your own.\n */\nabstract contract GSNRecipientUpgradeSafe is Initializable, IRelayRecipient, ContextUpgradeSafe {\n function __GSNRecipient_init() internal initializer {\n __Context_init_unchained();\n __GSNRecipient_init_unchained();\n }\n\n function __GSNRecipient_init_unchained() internal initializer {\n\n _relayHub = 0xD216153c06E857cD7f72665E0aF1d7D82172F494;\n\n }\n\n // Default RelayHub address, deployed on mainnet and all testnets at the same address\n address private _relayHub ;\n\n uint256 constant private _RELAYED_CALL_ACCEPTED = 0;\n uint256 constant private _RELAYED_CALL_REJECTED = 11;\n\n // How much gas is forwarded to postRelayedCall\n uint256 constant internal _POST_RELAYED_CALL_MAX_GAS = 100000;\n\n /**\n * @dev Emitted when a contract changes its {IRelayHub} contract to a new one.\n */\n event RelayHubChanged(address indexed oldRelayHub, address indexed newRelayHub);\n\n /**\n * @dev Returns the address of the {IRelayHub} contract for this recipient.\n */\n function getHubAddr() public view override returns (address) {\n return _relayHub;\n }\n\n /**\n * @dev Switches to a new {IRelayHub} instance. This method is added for future-proofing: there's no reason to not\n * use the default instance.\n *\n * IMPORTANT: After upgrading, the {GSNRecipient} will no longer be able to receive relayed calls from the old\n * {IRelayHub} instance. Additionally, all funds should be previously withdrawn via {_withdrawDeposits}.\n */\n function _upgradeRelayHub(address newRelayHub) internal virtual {\n address currentRelayHub = _relayHub;\n require(newRelayHub != address(0), \"GSNRecipient: new RelayHub is the zero address\");\n require(newRelayHub != currentRelayHub, \"GSNRecipient: new RelayHub is the current one\");\n\n emit RelayHubChanged(currentRelayHub, newRelayHub);\n\n _relayHub = newRelayHub;\n }\n\n /**\n * @dev Returns the version string of the {IRelayHub} for which this recipient implementation was built. If\n * {_upgradeRelayHub} is used, the new {IRelayHub} instance should be compatible with this version.\n */\n // This function is view for future-proofing, it may require reading from\n // storage in the future.\n function relayHubVersion() public view returns (string memory) {\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n return \"1.0.0\";\n }\n\n /**\n * @dev Withdraws the recipient's deposits in `RelayHub`.\n *\n * Derived contracts should expose this in an external interface with proper access control.\n */\n function _withdrawDeposits(uint256 amount, address payable payee) internal virtual {\n IRelayHub(_relayHub).withdraw(amount, payee);\n }\n\n // Overrides for Context's functions: when called from RelayHub, sender and\n // data require some pre-processing: the actual sender is stored at the end\n // of the call data, which in turns means it needs to be removed from it\n // when handling said data.\n\n /**\n * @dev Replacement for msg.sender. Returns the actual sender of a transaction: msg.sender for regular transactions,\n * and the end-user for GSN relayed calls (where msg.sender is actually `RelayHub`).\n *\n * IMPORTANT: Contracts derived from {GSNRecipient} should never use `msg.sender`, and use {_msgSender} instead.\n */\n function _msgSender() internal view virtual override returns (address payable) {\n if (msg.sender != _relayHub) {\n return msg.sender;\n } else {\n return _getRelayedCallSender();\n }\n }\n\n /**\n * @dev Replacement for msg.data. Returns the actual calldata of a transaction: msg.data for regular transactions,\n * and a reduced version for GSN relayed calls (where msg.data contains additional information).\n *\n * IMPORTANT: Contracts derived from {GSNRecipient} should never use `msg.data`, and use {_msgData} instead.\n */\n function _msgData() internal view virtual override returns (bytes memory) {\n if (msg.sender != _relayHub) {\n return msg.data;\n } else {\n return _getRelayedCallData();\n }\n }\n\n // Base implementations for pre and post relayedCall: only RelayHub can invoke them, and data is forwarded to the\n // internal hook.\n\n /**\n * @dev See `IRelayRecipient.preRelayedCall`.\n *\n * This function should not be overriden directly, use `_preRelayedCall` instead.\n *\n * * Requirements:\n *\n * - the caller must be the `RelayHub` contract.\n */\n function preRelayedCall(bytes memory context) public virtual override returns (bytes32) {\n require(msg.sender == getHubAddr(), \"GSNRecipient: caller is not RelayHub\");\n return _preRelayedCall(context);\n }\n\n /**\n * @dev See `IRelayRecipient.preRelayedCall`.\n *\n * Called by `GSNRecipient.preRelayedCall`, which asserts the caller is the `RelayHub` contract. Derived contracts\n * must implement this function with any relayed-call preprocessing they may wish to do.\n *\n */\n function _preRelayedCall(bytes memory context) internal virtual returns (bytes32);\n\n /**\n * @dev See `IRelayRecipient.postRelayedCall`.\n *\n * This function should not be overriden directly, use `_postRelayedCall` instead.\n *\n * * Requirements:\n *\n * - the caller must be the `RelayHub` contract.\n */\n function postRelayedCall(bytes memory context, bool success, uint256 actualCharge, bytes32 preRetVal) public virtual override {\n require(msg.sender == getHubAddr(), \"GSNRecipient: caller is not RelayHub\");\n _postRelayedCall(context, success, actualCharge, preRetVal);\n }\n\n /**\n * @dev See `IRelayRecipient.postRelayedCall`.\n *\n * Called by `GSNRecipient.postRelayedCall`, which asserts the caller is the `RelayHub` contract. Derived contracts\n * must implement this function with any relayed-call postprocessing they may wish to do.\n *\n */\n function _postRelayedCall(bytes memory context, bool success, uint256 actualCharge, bytes32 preRetVal) internal virtual;\n\n /**\n * @dev Return this in acceptRelayedCall to proceed with the execution of a relayed call. Note that this contract\n * will be charged a fee by RelayHub\n */\n function _approveRelayedCall() internal pure returns (uint256, bytes memory) {\n return _approveRelayedCall(\"\");\n }\n\n /**\n * @dev See `GSNRecipient._approveRelayedCall`.\n *\n * This overload forwards `context` to _preRelayedCall and _postRelayedCall.\n */\n function _approveRelayedCall(bytes memory context) internal pure returns (uint256, bytes memory) {\n return (_RELAYED_CALL_ACCEPTED, context);\n }\n\n /**\n * @dev Return this in acceptRelayedCall to impede execution of a relayed call. No fees will be charged.\n */\n function _rejectRelayedCall(uint256 errorCode) internal pure returns (uint256, bytes memory) {\n return (_RELAYED_CALL_REJECTED + errorCode, \"\");\n }\n\n /*\n * @dev Calculates how much RelayHub will charge a recipient for using `gas` at a `gasPrice`, given a relayer's\n * `serviceFee`.\n */\n function _computeCharge(uint256 gas, uint256 gasPrice, uint256 serviceFee) internal pure returns (uint256) {\n // The fee is expressed as a percentage. E.g. a value of 40 stands for a 40% fee, so the recipient will be\n // charged for 1.4 times the spent amount.\n return (gas * gasPrice * (100 + serviceFee)) / 100;\n }\n\n function _getRelayedCallSender() private pure returns (address payable result) {\n // We need to read 20 bytes (an address) located at array index msg.data.length - 20. In memory, the array\n // is prefixed with a 32-byte length value, so we first add 32 to get the memory read index. However, doing\n // so would leave the address in the upper 20 bytes of the 32-byte word, which is inconvenient and would\n // require bit shifting. We therefore subtract 12 from the read index so the address lands on the lower 20\n // bytes. This can always be done due to the 32-byte prefix.\n\n // The final memory read index is msg.data.length - 20 + 32 - 12 = msg.data.length. Using inline assembly is the\n // easiest/most-efficient way to perform this operation.\n\n // These fields are not accessible from assembly\n bytes memory array = msg.data;\n uint256 index = msg.data.length;\n\n // solhint-disable-next-line no-inline-assembly\n assembly {\n // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those.\n result := and(mload(add(array, index)), 0xffffffffffffffffffffffffffffffffffffffff)\n }\n return result;\n }\n\n function _getRelayedCallData() private pure returns (bytes memory) {\n // RelayHub appends the sender address at the end of the calldata, so in order to retrieve the actual msg.data,\n // we must strip the last 20 bytes (length of an address type) from it.\n\n uint256 actualDataLength = msg.data.length - 20;\n bytes memory actualData = new bytes(actualDataLength);\n\n for (uint256 i = 0; i < actualDataLength; ++i) {\n actualData[i] = msg.data[i];\n }\n\n return actualData;\n }\n\n uint256[49] private __gap;\n}\n", "sourcePath": "contracts/GSN/GSNRecipient.sol", "sourceMap": "", "deployedSourceMap": "", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "oldRelayHub", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newRelayHub", "type": "address" } ], "name": "RelayHubChanged", "type": "event" }, { "inputs": [ { "internalType": "address", "name": "relay", "type": "address" }, { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "bytes", "name": "encodedFunction", "type": "bytes" }, { "internalType": "uint256", "name": "transactionFee", "type": "uint256" }, { "internalType": "uint256", "name": "gasPrice", "type": "uint256" }, { "internalType": "uint256", "name": "gasLimit", "type": "uint256" }, { "internalType": "uint256", "name": "nonce", "type": "uint256" }, { "internalType": "bytes", "name": "approvalData", "type": "bytes" }, { "internalType": "uint256", "name": "maxPossibleCharge", "type": "uint256" } ], "name": "acceptRelayedCall", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" }, { "internalType": "bytes", "name": "", "type": "bytes" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getHubAddr", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "bytes", "name": "context", "type": "bytes" }, { "internalType": "bool", "name": "success", "type": "bool" }, { "internalType": "uint256", "name": "actualCharge", "type": "uint256" }, { "internalType": "bytes32", "name": "preRetVal", "type": "bytes32" } ], "name": "postRelayedCall", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "bytes", "name": "context", "type": "bytes" } ], "name": "preRelayedCall", "outputs": [ { "internalType": "bytes32", "name": "", "type": "bytes32" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "relayHubVersion", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" } ], "ast": { "absolutePath": "contracts/GSN/GSNRecipient.sol", "exportedSymbols": { "GSNRecipientUpgradeSafe": [ 425 ] }, "id": 426, "nodeType": "SourceUnit", "nodes": [ { "id": 46, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:1" }, { "absolutePath": "contracts/GSN/IRelayRecipient.sol", "file": "./IRelayRecipient.sol", "id": 47, "nodeType": "ImportDirective", "scope": 426, "sourceUnit": 1335, "src": "25:31:1", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/GSN/IRelayHub.sol", "file": "./IRelayHub.sol", "id": 48, "nodeType": "ImportDirective", "scope": 426, "sourceUnit": 1279, "src": "57:25:1", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/GSN/Context.sol", "file": "./Context.sol", 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The functions {IRelayRecipient-acceptRelayedCall},\n {_preRelayedCall}, and {_postRelayedCall} are not implemented and must be\nprovided by derived contracts. See the\nxref:ROOT:gsn-strategies.adoc#gsn-strategies[GSN strategies] for more\ninformation on how to use the pre-built {GSNRecipientSignature} and\n{GSNRecipientERC20Fee}, or how to write your own." }, "fullyImplemented": false, "id": 425, "linearizedBaseContracts": [ 425, 44, 1334, 1407 ], "name": "GSNRecipientUpgradeSafe", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 68, "nodeType": "Block", "src": "854:84:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 62, "name": "__Context_init_unchained", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19, "src": "864:24:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 63, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "864:26:1", 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"@dev Returns the address of the {IRelayHub} contract for this recipient." }, "functionSelector": "74e861d6", "id": 107, "implemented": true, "kind": "function", "modifiers": [], "name": "getHubAddr", "nodeType": "FunctionDefinition", "overrides": { "id": 100, "nodeType": "OverrideSpecifier", "overrides": [], "src": "1759:8:1" }, "parameters": { "id": 99, "nodeType": "ParameterList", "parameters": [], "src": "1744:2:1" }, "returnParameters": { "id": 103, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 102, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 107, "src": "1777:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 101, "name": "address", "nodeType": "ElementaryTypeName", "src": "1777:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1776:9:1" }, "scope": 425, "src": "1725:94:1", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "body": { "id": 143, "nodeType": "Block", "src": "2288:339:1", "statements": [ { "assignments": [ 114 ], "declarations": [ { "constant": false, "id": 114, "mutability": "mutable", "name": "currentRelayHub", "nodeType": "VariableDeclaration", "overrides": null, "scope": 143, "src": "2298:23:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 113, "name": "address", "nodeType": "ElementaryTypeName", "src": "2298:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 116, "initialValue": { "argumentTypes": null, "id": 115, "name": "_relayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 81, "src": "2324:9:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "2298:35:1" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 123, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 118, "name": "newRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "2351:11:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 121, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2374:1:1", "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": 120, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2366:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 119, "name": "address", "nodeType": "ElementaryTypeName", "src": "2366:7:1", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 122, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2366:10:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "2351:25:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "47534e526563697069656e743a206e65772052656c617948756220697320746865207a65726f2061646472657373", "id": 124, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2378:48:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_6f491055395682510b2d42bd98bb3e1d6b09e7412a20297798e6a1eaf3a959fc", "typeString": "literal_string \"GSNRecipient: new RelayHub is the zero address\"" }, "value": "GSNRecipient: new RelayHub is the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_6f491055395682510b2d42bd98bb3e1d6b09e7412a20297798e6a1eaf3a959fc", "typeString": "literal_string \"GSNRecipient: new RelayHub is the zero address\"" } ], "id": 117, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2343:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 125, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2343:84:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 126, "nodeType": "ExpressionStatement", "src": "2343:84:1" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 130, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 128, "name": "newRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "2445:11:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 129, "name": "currentRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 114, "src": "2460:15:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2445:30:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "47534e526563697069656e743a206e65772052656c6179487562206973207468652063757272656e74206f6e65", "id": 131, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2477:47:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_a813abdd30d501e1e20e9af7c88309a559a778de193d0ada7263f2d66933ec3e", "typeString": "literal_string \"GSNRecipient: new RelayHub is the current one\"" }, "value": "GSNRecipient: new RelayHub is the current one" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a813abdd30d501e1e20e9af7c88309a559a778de193d0ada7263f2d66933ec3e", "typeString": "literal_string \"GSNRecipient: new RelayHub is the current one\"" } ], "id": 127, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2437:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 132, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2437:88:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 133, "nodeType": "ExpressionStatement", "src": "2437:88:1" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 135, "name": "currentRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 114, "src": "2557:15:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 136, "name": "newRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "2574:11:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 134, "name": "RelayHubChanged", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 97, "src": "2541:15:1", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$returns$__$", "typeString": "function (address,address)" } }, "id": 137, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2541:45:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 138, "nodeType": "EmitStatement", "src": "2536:50:1" }, { "expression": { "argumentTypes": null, "id": 141, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 139, "name": "_relayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 81, "src": "2597:9:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 140, "name": "newRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "2609:11:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2597:23:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 142, "nodeType": "ExpressionStatement", "src": "2597:23:1" } ] }, "documentation": { "id": 108, "nodeType": "StructuredDocumentation", "src": "1825:394:1", "text": "@dev Switches to a new {IRelayHub} instance. This method is added for future-proofing: there's no reason to not\nuse the default instance.\n * IMPORTANT: After upgrading, the {GSNRecipient} will no longer be able to receive relayed calls from the old\n{IRelayHub} instance. Additionally, all funds should be previously withdrawn via {_withdrawDeposits}." }, "id": 144, "implemented": true, "kind": "function", "modifiers": [], "name": "_upgradeRelayHub", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 111, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 110, "mutability": "mutable", "name": "newRelayHub", "nodeType": "VariableDeclaration", "overrides": null, "scope": 144, "src": "2250:19:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 109, "name": "address", "nodeType": "ElementaryTypeName", "src": "2250:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2249:21:1" }, "returnParameters": { "id": 112, "nodeType": "ParameterList", "parameters": [], "src": "2288:0:1" }, "scope": 425, "src": "2224:403:1", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 154, "nodeType": "Block", "src": "3036:164:1", "statements": [ { "expression": { "argumentTypes": null, "id": 150, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "3046:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_GSNRecipientUpgradeSafe_$425", "typeString": "contract GSNRecipientUpgradeSafe" } }, "id": 151, "nodeType": "ExpressionStatement", "src": "3046:4:1" }, { "expression": { "argumentTypes": null, "hexValue": "312e302e30", "id": 152, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3186:7:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_06c015bd22b4c69690933c1058878ebdfef31f9aaae40bbe86d8a09fe1b2972c", "typeString": "literal_string \"1.0.0\"" }, "value": "1.0.0" }, "functionReturnParameters": 149, "id": 153, "nodeType": "Return", "src": "3179:14:1" } ] }, "documentation": { "id": 145, "nodeType": "StructuredDocumentation", "src": "2633:227:1", "text": "@dev Returns the version string of the {IRelayHub} for which this recipient implementation was built. If\n{_upgradeRelayHub} is used, the new {IRelayHub} instance should be compatible with this version." }, "functionSelector": "ad61ccd5", "id": 155, "implemented": true, "kind": "function", "modifiers": [], "name": "relayHubVersion", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 146, "nodeType": "ParameterList", "parameters": [], "src": "2997:2:1" }, "returnParameters": { "id": 149, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 148, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 155, "src": "3021:13:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 147, "name": "string", "nodeType": "ElementaryTypeName", "src": "3021:6:1", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "3020:15:1" }, "scope": 425, "src": "2973:227:1", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "body": { "id": 171, "nodeType": "Block", "src": "3471:61:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 167, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 158, "src": "3511:6:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 168, "name": "payee", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 160, "src": "3519:5:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 164, "name": "_relayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 81, "src": "3491:9:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 163, "name": "IRelayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1278, "src": "3481:9:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IRelayHub_$1278_$", "typeString": "type(contract IRelayHub)" } }, "id": 165, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3481:20:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IRelayHub_$1278", "typeString": "contract IRelayHub" } }, "id": 166, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "withdraw", "nodeType": "MemberAccess", "referencedDeclaration": 1121, "src": "3481:29:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_uint256_$_t_address_payable_$returns$__$", "typeString": "function (uint256,address payable) external" } }, "id": 169, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3481:44:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 170, "nodeType": "ExpressionStatement", "src": "3481:44:1" } ] }, "documentation": { "id": 156, "nodeType": "StructuredDocumentation", "src": "3206:177:1", "text": "@dev Withdraws the recipient's deposits in `RelayHub`.\n * Derived contracts should expose this in an external interface with proper access control." }, "id": 172, "implemented": true, "kind": "function", "modifiers": [], "name": "_withdrawDeposits", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 161, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 158, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 172, "src": "3415:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 157, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3415:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 160, "mutability": "mutable", "name": "payee", "nodeType": "VariableDeclaration", "overrides": null, "scope": 172, "src": "3431:21:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 159, "name": "address", "nodeType": "ElementaryTypeName", "src": "3431:15:1", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "value": null, "visibility": "internal" } ], "src": "3414:39:1" }, "returnParameters": { "id": 162, "nodeType": "ParameterList", "parameters": [], "src": "3471:0:1" }, "scope": 425, "src": "3388:144:1", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "baseFunctions": [ 28 ], "body": { "id": 192, "nodeType": "Block", "src": "4237:148:1", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 182, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 179, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "4251:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 180, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4251:10:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 181, "name": "_relayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 81, "src": "4265:9:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "4251:23:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 190, "nodeType": "Block", "src": "4324:55:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 187, "name": "_getRelayedCallSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 376, "src": "4345:21:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$__$returns$_t_address_payable_$", "typeString": "function () pure returns (address payable)" } }, "id": 188, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4345:23:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "functionReturnParameters": 178, "id": 189, "nodeType": "Return", "src": "4338:30:1" } ] }, "id": 191, "nodeType": "IfStatement", "src": "4247:132:1", "trueBody": { "id": 186, "nodeType": "Block", "src": "4276:42:1", "statements": [ { "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 183, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "4297:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 184, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4297:10:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "functionReturnParameters": 178, "id": 185, "nodeType": "Return", "src": "4290:17:1" } ] } } ] }, "documentation": { "id": 173, "nodeType": "StructuredDocumentation", "src": "3808:345:1", "text": "@dev Replacement for msg.sender. Returns the actual sender of a transaction: msg.sender for regular transactions,\nand the end-user for GSN relayed calls (where msg.sender is actually `RelayHub`).\n * IMPORTANT: Contracts derived from {GSNRecipient} should never use `msg.sender`, and use {_msgSender} instead." }, "id": 193, "implemented": true, "kind": "function", "modifiers": [], "name": "_msgSender", "nodeType": "FunctionDefinition", "overrides": { "id": 175, "nodeType": "OverrideSpecifier", "overrides": [], "src": "4202:8:1" }, "parameters": { "id": 174, "nodeType": "ParameterList", "parameters": [], "src": "4177:2:1" }, "returnParameters": { "id": 178, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 177, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 193, "src": "4220:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 176, "name": "address", "nodeType": "ElementaryTypeName", "src": "4220:15:1", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "value": null, "visibility": "internal" } ], "src": "4219:17:1" }, "scope": 425, "src": "4158:227:1", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "baseFunctions": [ 39 ], "body": { "id": 213, "nodeType": "Block", "src": "4821:144:1", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 203, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 200, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "4835:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 201, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4835:10:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 202, "name": "_relayHub", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 81, "src": "4849:9:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "4835:23:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 211, "nodeType": "Block", "src": "4906:53:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 208, "name": "_getRelayedCallData", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 420, "src": "4927:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 209, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4927:21:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 199, "id": 210, "nodeType": "Return", "src": "4920:28:1" } ] }, "id": 212, "nodeType": "IfStatement", "src": "4831:128:1", "trueBody": { "id": 207, "nodeType": "Block", "src": "4860:40:1", "statements": [ { "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 204, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "4881:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 205, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4881:8:1", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "functionReturnParameters": 199, "id": 206, "nodeType": "Return", "src": "4874:15:1" } ] } } ] }, "documentation": { "id": 194, "nodeType": "StructuredDocumentation", "src": "4391:351:1", "text": "@dev Replacement for msg.data. Returns the actual calldata of a transaction: msg.data for regular transactions,\nand a reduced version for GSN relayed calls (where msg.data contains additional information).\n * IMPORTANT: Contracts derived from {GSNRecipient} should never use `msg.data`, and use {_msgData} instead." }, "id": 214, "implemented": true, "kind": "function", "modifiers": [], "name": "_msgData", "nodeType": "FunctionDefinition", "overrides": { "id": 196, "nodeType": "OverrideSpecifier", "overrides": [], "src": "4789:8:1" }, "parameters": { "id": 195, "nodeType": "ParameterList", "parameters": [], "src": "4764:2:1" }, "returnParameters": { "id": 199, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 198, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 214, "src": "4807:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 197, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4807:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "4806:14:1" }, "scope": 425, "src": "4747:218:1", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "baseFunctions": [ 1321 ], "body": { "id": 236, "nodeType": "Block", "src": "5449:133:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 228, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 224, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "5467:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 225, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5467:10:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 226, "name": "getHubAddr", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 107, "src": "5481:10:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 227, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5481:12:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "5467:26:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "47534e526563697069656e743a2063616c6c6572206973206e6f742052656c6179487562", "id": 229, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5495:38:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5a8631418fdde7d8bd9088d1be86b076bc07c8b187afcea36c0a6e10c88ab53", "typeString": "literal_string \"GSNRecipient: caller is not RelayHub\"" }, "value": "GSNRecipient: caller is not RelayHub" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c5a8631418fdde7d8bd9088d1be86b076bc07c8b187afcea36c0a6e10c88ab53", "typeString": "literal_string \"GSNRecipient: caller is not RelayHub\"" } ], "id": 223, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "5459:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 230, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5459:75:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 231, "nodeType": "ExpressionStatement", "src": "5459:75:1" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 233, "name": "context", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 217, "src": "5567:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 232, "name": "_preRelayedCall", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 245, "src": "5551:15:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) returns (bytes32)" } }, "id": 234, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5551:24:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 222, "id": 235, "nodeType": "Return", "src": "5544:31:1" } ] }, "documentation": { "id": 215, "nodeType": "StructuredDocumentation", "src": "5112:244:1", "text": "@dev See `IRelayRecipient.preRelayedCall`.\n * This function should not be overriden directly, use `_preRelayedCall` instead.\n * * Requirements:\n * - the caller must be the `RelayHub` contract." }, "functionSelector": "80274db7", "id": 237, "implemented": true, "kind": "function", "modifiers": [], "name": "preRelayedCall", "nodeType": "FunctionDefinition", "overrides": { "id": 219, "nodeType": "OverrideSpecifier", "overrides": [], "src": "5422:8:1" }, "parameters": { "id": 218, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 217, "mutability": "mutable", "name": "context", "nodeType": "VariableDeclaration", "overrides": null, "scope": 237, "src": "5385:20:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 216, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5385:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "5384:22:1" }, "returnParameters": { "id": 222, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 221, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 237, "src": "5440:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 220, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5440:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "5439:9:1" }, "scope": 425, "src": "5361:221:1", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "body": null, "documentation": { "id": 238, "nodeType": "StructuredDocumentation", "src": "5588:287:1", "text": "@dev See `IRelayRecipient.preRelayedCall`.\n * Called by `GSNRecipient.preRelayedCall`, which asserts the caller is the `RelayHub` contract. Derived contracts\nmust implement this function with any relayed-call preprocessing they may wish to do.\n " }, "id": 245, "implemented": false, "kind": "function", "modifiers": [], "name": "_preRelayedCall", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 241, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 240, "mutability": "mutable", "name": "context", "nodeType": "VariableDeclaration", "overrides": null, "scope": 245, "src": "5905:20:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 239, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5905:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "5904:22:1" }, "returnParameters": { "id": 244, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 243, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 245, "src": "5953:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 242, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5953:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "5952:9:1" }, "scope": 425, "src": "5880:82:1", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "baseFunctions": [ 1333 ], "body": { "id": 274, "nodeType": "Block", "src": "6345:161:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 263, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 259, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "6363:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 260, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6363:10:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 261, "name": "getHubAddr", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 107, "src": "6377:10:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 262, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6377:12:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "6363:26:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "47534e526563697069656e743a2063616c6c6572206973206e6f742052656c6179487562", "id": 264, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6391:38:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5a8631418fdde7d8bd9088d1be86b076bc07c8b187afcea36c0a6e10c88ab53", "typeString": "literal_string \"GSNRecipient: caller is not RelayHub\"" }, "value": "GSNRecipient: caller is not RelayHub" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c5a8631418fdde7d8bd9088d1be86b076bc07c8b187afcea36c0a6e10c88ab53", "typeString": "literal_string \"GSNRecipient: caller is not RelayHub\"" } ], "id": 258, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "6355:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 265, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6355:75:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 266, "nodeType": "ExpressionStatement", "src": "6355:75:1" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 268, "name": "context", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 248, "src": "6457:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 269, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 250, "src": "6466:7:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "id": 270, "name": "actualCharge", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 252, "src": "6475:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 271, "name": "preRetVal", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 254, "src": "6489:9:1", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 267, "name": "_postRelayedCall", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 287, "src": "6440:16:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes_memory_ptr_$_t_bool_$_t_uint256_$_t_bytes32_$returns$__$", "typeString": "function (bytes memory,bool,uint256,bytes32)" } }, "id": 272, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6440:59:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 273, "nodeType": "ExpressionStatement", "src": "6440:59:1" } ] }, "documentation": { "id": 246, "nodeType": "StructuredDocumentation", "src": "5968:246:1", "text": "@dev See `IRelayRecipient.postRelayedCall`.\n * This function should not be overriden directly, use `_postRelayedCall` instead.\n * * Requirements:\n * - the caller must be the `RelayHub` contract." }, "functionSelector": "e06e0e22", "id": 275, "implemented": true, "kind": "function", "modifiers": [], "name": "postRelayedCall", "nodeType": "FunctionDefinition", "overrides": { "id": 256, "nodeType": "OverrideSpecifier", "overrides": [], "src": "6336:8:1" }, "parameters": { "id": 255, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 248, "mutability": "mutable", "name": "context", "nodeType": "VariableDeclaration", "overrides": null, "scope": 275, "src": "6244:20:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 247, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6244:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 250, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 275, "src": "6266:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 249, "name": "bool", "nodeType": "ElementaryTypeName", "src": "6266:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 252, "mutability": "mutable", "name": "actualCharge", "nodeType": "VariableDeclaration", "overrides": null, "scope": 275, "src": "6280:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 251, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6280:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 254, "mutability": "mutable", "name": "preRetVal", "nodeType": "VariableDeclaration", "overrides": null, "scope": 275, "src": "6302:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 253, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6302:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "6243:77:1" }, "returnParameters": { "id": 257, "nodeType": "ParameterList", "parameters": [], "src": "6345:0:1" }, "scope": 425, "src": "6219:287:1", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "body": null, "documentation": { "id": 276, "nodeType": "StructuredDocumentation", "src": "6512:290:1", "text": "@dev See `IRelayRecipient.postRelayedCall`.\n * Called by `GSNRecipient.postRelayedCall`, which asserts the caller is the `RelayHub` contract. Derived contracts\nmust implement this function with any relayed-call postprocessing they may wish to do.\n " }, "id": 287, "implemented": false, "kind": "function", "modifiers": [], "name": "_postRelayedCall", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 285, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 278, "mutability": "mutable", "name": "context", "nodeType": "VariableDeclaration", "overrides": null, "scope": 287, "src": "6833:20:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 277, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6833:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 280, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 287, "src": "6855:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 279, "name": "bool", "nodeType": "ElementaryTypeName", "src": "6855:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 282, "mutability": "mutable", "name": "actualCharge", "nodeType": "VariableDeclaration", "overrides": null, "scope": 287, "src": "6869:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 281, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6869:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 284, "mutability": "mutable", "name": "preRetVal", "nodeType": "VariableDeclaration", "overrides": null, "scope": 287, "src": "6891:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 283, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6891:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "6832:77:1" }, "returnParameters": { "id": 286, "nodeType": "ParameterList", "parameters": [], "src": "6926:0:1" }, "scope": 425, "src": "6807:120:1", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 299, "nodeType": "Block", "src": "7185:47:1", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "", "id": 296, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7222:2:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "id": 295, "name": "_approveRelayedCall", "nodeType": "Identifier", "overloadedDeclarations": [ 300, 315 ], "referencedDeclaration": 315, "src": "7202:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$returns$_t_uint256_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) pure returns (uint256,bytes memory)" } }, "id": 297, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7202:23:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_bytes_memory_ptr_$", "typeString": "tuple(uint256,bytes memory)" } }, "functionReturnParameters": 294, "id": 298, "nodeType": "Return", "src": "7195:30:1" } ] }, "documentation": { "id": 288, "nodeType": "StructuredDocumentation", "src": "6933:170:1", "text": "@dev Return this in acceptRelayedCall to proceed with the execution of a relayed call. Note that this contract\nwill be charged a fee by RelayHub" }, "id": 300, "implemented": true, "kind": "function", "modifiers": [], "name": "_approveRelayedCall", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 289, "nodeType": "ParameterList", "parameters": [], "src": "7136:2:1" }, "returnParameters": { "id": 294, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 291, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 300, "src": "7162:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 290, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7162:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 293, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 300, "src": "7171:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 292, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7171:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "7161:23:1" }, "scope": 425, "src": "7108:124:1", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 314, "nodeType": "Block", "src": "7491:57:1", "statements": [ { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "id": 310, "name": "_RELAYED_CALL_ACCEPTED", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 84, "src": "7509:22:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 311, "name": "context", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 303, "src": "7533:7:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "id": 312, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7508:33:1", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_bytes_memory_ptr_$", "typeString": "tuple(uint256,bytes memory)" } }, "functionReturnParameters": 309, "id": 313, "nodeType": "Return", "src": "7501:40:1" } ] }, "documentation": { "id": 301, "nodeType": "StructuredDocumentation", "src": "7238:151:1", "text": "@dev See `GSNRecipient._approveRelayedCall`.\n * This overload forwards `context` to _preRelayedCall and _postRelayedCall." }, "id": 315, "implemented": true, "kind": "function", "modifiers": [], "name": "_approveRelayedCall", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 304, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 303, "mutability": "mutable", "name": "context", "nodeType": "VariableDeclaration", "overrides": null, "scope": 315, "src": "7423:20:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 302, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7423:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "7422:22:1" }, "returnParameters": { "id": 309, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 306, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 315, "src": "7468:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 305, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7468:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 308, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 315, "src": "7477:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 307, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7477:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "7467:23:1" }, "scope": 425, "src": "7394:154:1", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 331, "nodeType": "Block", "src": "7772:64:1", "statements": [ { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 327, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 325, "name": "_RELAYED_CALL_REJECTED", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 87, "src": "7790:22:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "argumentTypes": null, "id": 326, "name": "errorCode", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 318, "src": "7815:9:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7790:34:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "", "id": 328, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7826:2:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "id": 329, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7789:40:1", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470_$", "typeString": "tuple(uint256,literal_string \"\")" } }, "functionReturnParameters": 324, "id": 330, "nodeType": "Return", "src": "7782:47:1" } ] }, "documentation": { "id": 316, "nodeType": "StructuredDocumentation", "src": "7554:120:1", "text": "@dev Return this in acceptRelayedCall to impede execution of a relayed call. No fees will be charged." }, "id": 332, "implemented": true, "kind": "function", "modifiers": [], "name": "_rejectRelayedCall", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 319, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 318, "mutability": "mutable", "name": "errorCode", "nodeType": "VariableDeclaration", "overrides": null, "scope": 332, "src": "7707:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 317, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7707:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7706:19:1" }, "returnParameters": { "id": 324, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 321, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 332, "src": "7749:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 320, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7749:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 323, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 332, "src": "7758:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 322, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "7758:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "7748:23:1" }, "scope": 425, "src": "7679:157:1", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 355, "nodeType": "Block", "src": "8101:233:1", "statements": [ { "expression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 353, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 350, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 345, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 343, "name": "gas", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 334, "src": "8285:3:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "argumentTypes": null, "id": 344, "name": "gasPrice", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 336, "src": "8291:8:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "8285:14:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 348, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "313030", "id": 346, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8303:3:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_100_by_1", "typeString": "int_const 100" }, "value": "100" }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "argumentTypes": null, "id": 347, "name": "serviceFee", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 338, "src": "8309:10:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "8303:16:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 349, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "8302:18:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "8285:35:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 351, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "8284:37:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "/", "rightExpression": { "argumentTypes": null, "hexValue": "313030", "id": 352, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8324:3:1", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_100_by_1", "typeString": "int_const 100" }, "value": "100" }, "src": "8284:43:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 342, "id": 354, "nodeType": "Return", "src": "8277:50:1" } ] }, "documentation": null, "id": 356, "implemented": true, "kind": "function", "modifiers": [], "name": "_computeCharge", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 339, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 334, "mutability": "mutable", "name": "gas", "nodeType": "VariableDeclaration", "overrides": null, "scope": 356, "src": "8018:11:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 333, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8018:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 336, "mutability": "mutable", "name": "gasPrice", "nodeType": "VariableDeclaration", "overrides": null, "scope": 356, "src": "8031:16:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 335, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8031:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 338, "mutability": "mutable", "name": "serviceFee", "nodeType": "VariableDeclaration", "overrides": null, "scope": 356, "src": "8049:18:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 337, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8049:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8017:51:1" }, "returnParameters": { "id": 342, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 341, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 356, "src": "8092:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 340, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8092:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8091:9:1" }, "scope": 425, "src": "7994:340:1", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 375, "nodeType": "Block", "src": "8419:1171:1", "statements": [ { "assignments": [ 362 ], "declarations": [ { "constant": false, "id": 362, "mutability": "mutable", "name": "array", "nodeType": "VariableDeclaration", "overrides": null, "scope": 375, "src": "9202:18:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 361, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "9202:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 365, "initialValue": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 363, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "9223:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 364, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "9223:8:1", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "nodeType": "VariableDeclarationStatement", "src": "9202:29:1" }, { "assignments": [ 367 ], "declarations": [ { "constant": false, "id": 367, "mutability": "mutable", "name": "index", "nodeType": "VariableDeclaration", "overrides": null, "scope": 375, "src": "9241:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, 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