{ "contractName": "ECRecovery", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f30073000000000000000000000000000000000000000030146080604052600080fd00a165627a7a723058209ec450206e877ff0553a50291ad69176fbccf0e1c44a3bca4dfd10b78f38dfee0029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fd00a165627a7a723058209ec450206e877ff0553a50291ad69176fbccf0e1c44a3bca4dfd10b78f38dfee0029", "sourceMap": "272:1857:65:-;;132:2:-1;166:7;155:9;146:7;137:37;252:7;246:14;243:1;238:23;232:4;229:33;270:1;265:20;;;;222:63;;265:20;274:9;222:63;;298:9;295:1;288:20;328:4;319:7;311:22;352:7;343;336:24", "deployedSourceMap": "272:1857:65:-;;;;;;;;", "source": "pragma solidity 0.4.24;\n\n// Using ECRecovery from open-zeppelin@ad12381549c4c0711c2f3310e9fb1f65d51c299c + added personalRecover function\n// See https://github.com/OpenZeppelin/openzeppelin-solidity/blob/ad12381549c4c0711c2f3310e9fb1f65d51c299c/contracts/ECRecovery.sol\n\n\nlibrary ECRecovery {\n /**\n * @dev Recover signer address from a personal signed message by using his signature\n * @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n * @param sig bytes signature, the signature is generated using web3.personal.sign()\n */\n function personalRecover(bytes32 hash, bytes sig) internal pure returns (address) {\n return recover(toEthSignedMessageHash(hash), sig);\n }\n\n /**\n * @dev Recover signer address from a message by using his signature\n * @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n * @param sig bytes signature, the signature is generated using web3.eth.sign()\n */\n function recover(bytes32 hash, bytes sig) internal pure returns (address) {\n bytes32 r;\n bytes32 s;\n uint8 v;\n\n //Check the signature length\n if (sig.length != 65) {\n return (address(0));\n }\n\n // Divide the signature in r, s and v variables\n assembly {\n r := mload(add(sig, 32))\n s := mload(add(sig, 64))\n v := byte(0, mload(add(sig, 96)))\n }\n\n // Version of signature should be 27 or 28, but 0 and 1 are also possible versions\n if (v < 27) {\n v += 27;\n }\n\n // If the version is correct return the signer address\n if (v != 27 && v != 28) {\n return (address(0));\n } else {\n return ecrecover(hash, v, r, s);\n }\n }\n\n /**\n * toEthSignedMessageHash\n * @dev prefix a bytes32 value with \"\\x19Ethereum Signed Message:\"\n * @dev and hash the result\n */\n function toEthSignedMessageHash(bytes32 hash)\n internal\n pure\n returns (bytes32)\n {\n // 32 is the length in bytes of hash,\n // enforced by the type signature above\n return keccak256(abi.encodePacked(\n \"\\x19Ethereum Signed Message:\\n32\",\n hash\n ));\n }\n}\n", "sourcePath": "@aragon/ppf-contracts/contracts/open-zeppelin/ECRecovery.sol", "ast": { "absolutePath": "@aragon/ppf-contracts/contracts/open-zeppelin/ECRecovery.sol", "exportedSymbols": { "ECRecovery": [ 14985 ] }, "id": 14986, "nodeType": "SourceUnit", "nodes": [ { "id": 14889, "literals": [ "solidity", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:23:65" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": null, "fullyImplemented": true, "id": 14985, "linearizedBaseContracts": [ 14985 ], "name": "ECRecovery", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 14905, "nodeType": "Block", "src": "670:60:65", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 14900, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14891, "src": "714:4:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 14899, "name": "toEthSignedMessageHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14984, "src": "691:22:65", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$returns$_t_bytes32_$", "typeString": "function (bytes32) pure returns (bytes32)" } }, "id": 14901, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "691:28:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14902, "name": "sig", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14893, "src": "721:3:65", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 14898, "name": "recover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14968, "src": "683:7:65", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$", "typeString": "function (bytes32,bytes memory) pure returns (address)" } }, "id": 14903, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "683:42:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14897, "id": 14904, "nodeType": "Return", "src": "676:49:65" } ] }, "documentation": "@dev Recover signer address from a personal signed message by using his signature\n@param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n@param sig bytes signature, the signature is generated using web3.personal.sign()", "id": 14906, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "personalRecover", "nodeType": "FunctionDefinition", "parameters": { "id": 14894, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14891, "name": "hash", "nodeType": "VariableDeclaration", "scope": 14906, "src": "613:12:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14890, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "613:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14893, "name": "sig", "nodeType": "VariableDeclaration", "scope": 14906, "src": "627:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 14892, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "627:5:65", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "612:25:65" }, "payable": false, "returnParameters": { "id": 14897, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14896, "name": "", "nodeType": "VariableDeclaration", "scope": 14906, "src": "661:7:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14895, "name": "address", "nodeType": "ElementaryTypeName", "src": "661:7:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "660:9:65" }, "scope": 14985, "src": "588:142:65", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 14967, "nodeType": "Block", "src": "1080:621:65", "statements": [ { "assignments": [], "declarations": [ { "constant": false, "id": 14916, "name": "r", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1086:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14915, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1086:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 14917, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1086:9:65" }, { "assignments": [], "declarations": [ { "constant": false, "id": 14919, "name": "s", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1101:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14918, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1101:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 14920, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1101:9:65" }, { "assignments": [], "declarations": [ { "constant": false, "id": 14922, "name": "v", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1116:7:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 14921, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1116:5:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": null, "visibility": "internal" } ], "id": 14923, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1116:7:65" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 14927, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 14924, "name": "sig", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14910, "src": "1167:3:65", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 14925, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1167:10:65", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "3635", "id": 14926, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1181:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_65_by_1", "typeString": "int_const 65" }, "value": "65" }, "src": "1167:16:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 14934, "nodeType": "IfStatement", "src": "1163:56:65", "trueBody": { "id": 14933, "nodeType": "Block", "src": "1185:34:65", "statements": [ { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 14929, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1209:1:65", "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": 14928, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1201:7:65", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 14930, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1201:10:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "id": 14931, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1200:12:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14914, "id": 14932, "nodeType": "Return", "src": "1193:19:65" } ] } }, { "externalReferences": [ { "r": { "declaration": 14916, "isOffset": false, "isSlot": false, "src": "1294:1:65", "valueSize": 1 } }, { "v": { "declaration": 14922, "isOffset": false, "isSlot": false, "src": "1356:1:65", "valueSize": 1 } }, { "sig": { "declaration": 14910, "isOffset": false, "isSlot": false, "src": "1309:3:65", "valueSize": 1 } }, { "s": { "declaration": 14919, "isOffset": false, "isSlot": false, "src": "1325:1:65", "valueSize": 1 } }, { "sig": { "declaration": 14910, "isOffset": false, "isSlot": false, "src": "1340:3:65", "valueSize": 1 } }, { "sig": { "declaration": 14910, "isOffset": false, "isSlot": false, "src": "1379:3:65", "valueSize": 1 } } ], "id": 14935, "nodeType": "InlineAssembly", "operations": "{\n r := mload(add(sig, 32))\n s := mload(add(sig, 64))\n v := byte(0, mload(add(sig, 96)))\n}", "src": "1277:213:65" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 14938, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 14936, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1492:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "hexValue": "3237", "id": 14937, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1496:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "1492:6:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 14944, "nodeType": "IfStatement", "src": "1488:34:65", "trueBody": { "id": 14943, "nodeType": "Block", "src": "1500:22:65", "statements": [ { "expression": { "argumentTypes": null, "id": 14941, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 14939, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1508:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "hexValue": "3237", "id": 14940, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1513:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "1508:7:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "id": 14942, "nodeType": "ExpressionStatement", "src": "1508:7:65" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 14951, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 14947, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 14945, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1591:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "3237", "id": 14946, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1596:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "1591:7:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 14950, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 14948, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1602:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "3238", "id": 14949, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1607:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_28_by_1", "typeString": "int_const 28" }, "value": "28" }, "src": "1602:7:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1591:18:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 14965, "nodeType": "Block", "src": "1651:46:65", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 14959, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14908, "src": "1676:4:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14960, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1682:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "argumentTypes": null, "id": 14961, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14916, "src": "1685:1:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14962, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14919, "src": "1688:1:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 14958, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15145, "src": "1666:9:65", "typeDescriptions": { "typeIdentifier": "t_function_ecrecover_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 14963, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1666:24:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14914, "id": 14964, "nodeType": "Return", "src": "1659:31:65" } ] }, "id": 14966, "nodeType": "IfStatement", "src": "1587:110:65", "trueBody": { "id": 14957, "nodeType": "Block", "src": "1611:34:65", "statements": [ { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 14953, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1635:1:65", "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": 14952, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1627:7:65", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 14954, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1627:10:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "id": 14955, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1626:12:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14914, "id": 14956, "nodeType": "Return", "src": "1619:19:65" } ] } } ] }, "documentation": "@dev Recover signer address from a message by using his signature\n@param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n@param sig bytes signature, the signature is generated using web3.eth.sign()", "id": 14968, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "recover", "nodeType": "FunctionDefinition", "parameters": { "id": 14911, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14908, "name": "hash", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1023:12:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14907, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1023:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14910, "name": "sig", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1037:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 14909, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1037:5:65", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1022:25:65" }, "payable": false, "returnParameters": { "id": 14914, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14913, "name": "", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1071:7:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14912, "name": "address", "nodeType": "ElementaryTypeName", "src": "1071:7:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1070:9:65" }, "scope": 14985, "src": "1006:695:65", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 14983, "nodeType": "Block", "src": "1936:191:65", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a3332", "id": 14978, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2069:34:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string \"\u0019Ethereum Signed Message:\n32\"" }, "value": "\u0019Ethereum Signed Message:\n32" }, { "argumentTypes": null, "id": 14979, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14970, "src": "2111:4:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string \"\u0019Ethereum Signed Message:\n32\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 14976, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15140, "src": "2045:3:65", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 14977, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2045:16:65", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 14980, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2045:76:65", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 14975, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15147, "src": "2035:9:65", "typeDescriptions": { "typeIdentifier": "t_function_sha3_pure$__$returns$_t_bytes32_$", "typeString": "function () pure returns (bytes32)" } }, "id": 14981, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2035:87:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 14974, "id": 14982, "nodeType": "Return", "src": "2028:94:65" } ] }, "documentation": "toEthSignedMessageHash\n@dev prefix a bytes32 value with \"\\x19Ethereum Signed Message:\"\n@dev and hash the result", "id": 14984, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "toEthSignedMessageHash", "nodeType": "FunctionDefinition", "parameters": { "id": 14971, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14970, "name": "hash", "nodeType": "VariableDeclaration", "scope": 14984, "src": "1876:12:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14969, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1876:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1875:14:65" }, "payable": false, "returnParameters": { "id": 14974, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14973, "name": "", "nodeType": "VariableDeclaration", "scope": 14984, "src": "1925:7:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14972, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1925:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1924:9:65" }, "scope": 14985, "src": "1844:283:65", "stateMutability": "pure", "superFunction": null, "visibility": "internal" } ], "scope": 14986, "src": "272:1857:65" } ], "src": "0:2130:65" }, "legacyAST": { "absolutePath": "@aragon/ppf-contracts/contracts/open-zeppelin/ECRecovery.sol", "exportedSymbols": { "ECRecovery": [ 14985 ] }, "id": 14986, "nodeType": "SourceUnit", "nodes": [ { "id": 14889, "literals": [ "solidity", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:23:65" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": null, "fullyImplemented": true, "id": 14985, "linearizedBaseContracts": [ 14985 ], "name": "ECRecovery", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 14905, "nodeType": "Block", "src": "670:60:65", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 14900, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14891, "src": "714:4:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 14899, "name": "toEthSignedMessageHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14984, "src": "691:22:65", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$returns$_t_bytes32_$", "typeString": "function (bytes32) pure returns (bytes32)" } }, "id": 14901, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "691:28:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14902, "name": "sig", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14893, "src": "721:3:65", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 14898, "name": "recover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14968, "src": "683:7:65", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$", "typeString": "function (bytes32,bytes memory) pure returns (address)" } }, "id": 14903, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "683:42:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14897, "id": 14904, "nodeType": "Return", "src": "676:49:65" } ] }, "documentation": "@dev Recover signer address from a personal signed message by using his signature\n@param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n@param sig bytes signature, the signature is generated using web3.personal.sign()", "id": 14906, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "personalRecover", "nodeType": "FunctionDefinition", "parameters": { "id": 14894, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14891, "name": "hash", "nodeType": "VariableDeclaration", "scope": 14906, "src": "613:12:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14890, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "613:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14893, "name": "sig", "nodeType": "VariableDeclaration", "scope": 14906, "src": "627:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 14892, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "627:5:65", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "612:25:65" }, "payable": false, "returnParameters": { "id": 14897, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14896, "name": "", "nodeType": "VariableDeclaration", "scope": 14906, "src": "661:7:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14895, "name": "address", "nodeType": "ElementaryTypeName", "src": "661:7:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "660:9:65" }, "scope": 14985, "src": "588:142:65", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 14967, "nodeType": "Block", "src": "1080:621:65", "statements": [ { "assignments": [], "declarations": [ { "constant": false, "id": 14916, "name": "r", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1086:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14915, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1086:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 14917, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1086:9:65" }, { "assignments": [], "declarations": [ { "constant": false, "id": 14919, "name": "s", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1101:9:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14918, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1101:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 14920, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1101:9:65" }, { "assignments": [], "declarations": [ { "constant": false, "id": 14922, "name": "v", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1116:7:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 14921, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1116:5:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": null, "visibility": "internal" } ], "id": 14923, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1116:7:65" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 14927, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 14924, "name": "sig", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14910, "src": "1167:3:65", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 14925, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1167:10:65", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "3635", "id": 14926, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1181:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_65_by_1", "typeString": "int_const 65" }, "value": "65" }, "src": "1167:16:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 14934, "nodeType": "IfStatement", "src": "1163:56:65", "trueBody": { "id": 14933, "nodeType": "Block", "src": "1185:34:65", "statements": [ { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 14929, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1209:1:65", "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": 14928, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1201:7:65", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 14930, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1201:10:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "id": 14931, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1200:12:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14914, "id": 14932, "nodeType": "Return", "src": "1193:19:65" } ] } }, { "externalReferences": [ { "r": { "declaration": 14916, "isOffset": false, "isSlot": false, "src": "1294:1:65", "valueSize": 1 } }, { "v": { "declaration": 14922, "isOffset": false, "isSlot": false, "src": "1356:1:65", "valueSize": 1 } }, { "sig": { "declaration": 14910, "isOffset": false, "isSlot": false, "src": "1309:3:65", "valueSize": 1 } }, { "s": { "declaration": 14919, "isOffset": false, "isSlot": false, "src": "1325:1:65", "valueSize": 1 } }, { "sig": { "declaration": 14910, "isOffset": false, "isSlot": false, "src": "1340:3:65", "valueSize": 1 } }, { "sig": { "declaration": 14910, "isOffset": false, "isSlot": false, "src": "1379:3:65", "valueSize": 1 } } ], "id": 14935, "nodeType": "InlineAssembly", "operations": "{\n r := mload(add(sig, 32))\n s := mload(add(sig, 64))\n v := byte(0, mload(add(sig, 96)))\n}", "src": "1277:213:65" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 14938, "isConstant": false, "isLValue": false, "isPure": 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14941, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 14939, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1508:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "hexValue": "3237", "id": 14940, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1513:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "1508:7:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "id": 14942, "nodeType": "ExpressionStatement", "src": "1508:7:65" } ] } }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 14951, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 14947, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 14945, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1591:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "3237", "id": 14946, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1596:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "1591:7:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 14950, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 14948, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1602:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "3238", "id": 14949, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1607:2:65", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_28_by_1", "typeString": "int_const 28" }, "value": "28" }, "src": "1602:7:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1591:18:65", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 14965, "nodeType": "Block", "src": "1651:46:65", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 14959, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14908, "src": "1676:4:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14960, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14922, "src": "1682:1:65", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "argumentTypes": null, "id": 14961, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14916, "src": "1685:1:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14962, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14919, "src": "1688:1:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 14958, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15145, "src": "1666:9:65", "typeDescriptions": { "typeIdentifier": "t_function_ecrecover_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 14963, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1666:24:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14914, "id": 14964, "nodeType": "Return", "src": "1659:31:65" } ] }, "id": 14966, "nodeType": "IfStatement", "src": "1587:110:65", "trueBody": { "id": 14957, "nodeType": "Block", "src": "1611:34:65", "statements": [ { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 14953, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1635:1:65", "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": 14952, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1627:7:65", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 14954, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1627:10:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "id": 14955, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1626:12:65", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 14914, "id": 14956, "nodeType": "Return", "src": "1619:19:65" } ] } } ] }, "documentation": "@dev Recover signer address from a message by using his signature\n@param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n@param sig bytes signature, the signature is generated using web3.eth.sign()", "id": 14968, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "recover", "nodeType": "FunctionDefinition", "parameters": { "id": 14911, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14908, "name": "hash", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1023:12:65", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14907, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1023:7:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14910, "name": "sig", "nodeType": "VariableDeclaration", "scope": 14968, "src": "1037:9:65", "stateVariable": false, "storageLocation": 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false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2045:76:65", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 14975, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15147, "src": "2035:9:65", "typeDescriptions": { "typeIdentifier": "t_function_sha3_pure$__$returns$_t_bytes32_$", "typeString": "function () pure returns (bytes32)" } }, "id": 14981, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2035:87:65", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 14974, "id": 14982, "nodeType": "Return", "src": "2028:94:65" } ] }, "documentation": 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