{ "contractName": "ECDSA", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.8.7+commit.e28d00a7\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Elliptic Curve Digital Signature Algorithm (ECDSA) operations. These functions can be used to verify that a message was signed by the holder of the private keys of a given address.\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/utils/cryptography/ECDSA.sol\":\"ECDSA\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0xaf159a8b1923ad2a26d516089bceca9bdeaeacd04be50983ea00ba63070f08a3\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6f2cf1c531122bc7ca96b8c8db6a60deae60441e5223065e792553d4849b5638\",\"dweb:/ipfs/QmPBdJmBBABMDCfyDjCbdxgiqRavgiSL88SYPGibgbPas9\"]},\"@openzeppelin/contracts/utils/cryptography/ECDSA.sol\":{\"keccak256\":\"0xdb7f5c28fc61cda0bd8ab60ce288e206b791643bcd3ba464a70cbec18895a2f5\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bf52bdf22a33263f5ca6227a35faeac3b81e7d2c692fbcc6a079d488710c5900\",\"dweb:/ipfs/QmcmsjkP4yq3UhiJbvyzwufaY2EKh1zhHaRK8ATag2cpD2\"]}},\"version\":1}", "bytecode": "0x60566037600b82828239805160001a607314602a57634e487b7160e01b600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212207672b568d753a5637ab794d2c0eaaf501f28235d504690cb445b257d2ae61e9764736f6c63430008070033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212207672b568d753a5637ab794d2c0eaaf501f28235d504690cb445b257d2ae61e9764736f6c63430008070033", "immutableReferences": {}, "sourceMap": "369:8375:57:-:0;;;;;;;;;;;;;;;-1:-1:-1;;;369:8375:57;;;;;;;;;;;;;;;;;", "deployedSourceMap": "369:8375:57:-:0;;;;;;;;", "source": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../Strings.sol\";\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSA {\n enum RecoverError {\n NoError,\n InvalidSignature,\n InvalidSignatureLength,\n InvalidSignatureS,\n InvalidSignatureV\n }\n\n function _throwError(RecoverError error) private pure {\n if (error == RecoverError.NoError) {\n return; // no error: do nothing\n } else if (error == RecoverError.InvalidSignature) {\n revert(\"ECDSA: invalid signature\");\n } else if (error == RecoverError.InvalidSignatureLength) {\n revert(\"ECDSA: invalid signature length\");\n } else if (error == RecoverError.InvalidSignatureS) {\n revert(\"ECDSA: invalid signature 's' value\");\n } else if (error == RecoverError.InvalidSignatureV) {\n revert(\"ECDSA: invalid signature 'v' value\");\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature` or error string. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n *\n * Documentation for signature generation:\n * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n *\n * _Available since v4.3._\n */\n function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n if (signature.length == 65) {\n bytes32 r;\n bytes32 s;\n uint8 v;\n // ecrecover takes the signature parameters, and the only way to get them\n // currently is to use assembly.\n /// @solidity memory-safe-assembly\n assembly {\n r := mload(add(signature, 0x20))\n s := mload(add(signature, 0x40))\n v := byte(0, mload(add(signature, 0x60)))\n }\n return tryRecover(hash, v, r, s);\n } else {\n return (address(0), RecoverError.InvalidSignatureLength);\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature`. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n */\n function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, signature);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n *\n * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address, RecoverError) {\n bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);\n uint8 v = uint8((uint256(vs) >> 255) + 27);\n return tryRecover(hash, v, r, s);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n *\n * _Available since v4.2._\n */\n function recover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n * `r` and `s` signature fields separately.\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address, RecoverError) {\n // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most\n // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n //\n // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n // these malleable signatures as well.\n if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n return (address(0), RecoverError.InvalidSignatureS);\n }\n if (v != 27 && v != 28) {\n return (address(0), RecoverError.InvalidSignatureV);\n }\n\n // If the signature is valid (and not malleable), return the signer address\n address signer = ecrecover(hash, v, r, s);\n if (signer == address(0)) {\n return (address(0), RecoverError.InvalidSignature);\n }\n\n return (signer, RecoverError.NoError);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `v`,\n * `r` and `s` signature fields separately.\n */\n function recover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {\n // 32 is the length in bytes of hash,\n // enforced by the type signature above\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from `s`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n\", Strings.toString(s.length), s));\n }\n\n /**\n * @dev Returns an Ethereum Signed Typed Data, created from a\n * `domainSeparator` and a `structHash`. This produces hash corresponding\n * to the one signed with the\n * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n * JSON-RPC method as part of EIP-712.\n *\n * See {recover}.\n */\n function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash));\n }\n}\n", "sourcePath": "@openzeppelin/contracts/utils/cryptography/ECDSA.sol", "ast": { "absolutePath": "@openzeppelin/contracts/utils/cryptography/ECDSA.sol", "exportedSymbols": { "ECDSA": [ 12122 ], "Strings": [ 11734 ] }, "id": 12123, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 11736, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "112:23:57" }, { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "file": "../Strings.sol", "id": 11737, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 12123, "sourceUnit": 11735, "src": "137:24:57", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 11738, "nodeType": "StructuredDocumentation", "src": "163:205:57", "text": " @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n These functions can be used to verify that a message was signed by the holder\n of the private keys of a given address." }, "fullyImplemented": true, "id": 12122, "linearizedBaseContracts": [ 12122 ], "name": "ECDSA", "nameLocation": "377:5:57", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "ECDSA.RecoverError", "id": 11744, "members": [ { "id": 11739, "name": "NoError", "nameLocation": "417:7:57", "nodeType": "EnumValue", "src": "417:7:57" }, { "id": 11740, "name": "InvalidSignature", "nameLocation": "434:16:57", "nodeType": "EnumValue", "src": "434:16:57" }, { "id": 11741, "name": "InvalidSignatureLength", "nameLocation": "460:22:57", "nodeType": "EnumValue", "src": "460:22:57" }, { "id": 11742, "name": "InvalidSignatureS", "nameLocation": "492:17:57", "nodeType": "EnumValue", "src": "492:17:57" }, { "id": 11743, "name": "InvalidSignatureV", "nameLocation": "519:17:57", "nodeType": "EnumValue", "src": "519:17:57" } ], "name": "RecoverError", "nameLocation": "394:12:57", "nodeType": "EnumDefinition", "src": "389:153:57" }, { "body": { "id": 11797, "nodeType": "Block", "src": "602:577:57", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11753, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11750, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "616:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11751, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "625:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11752, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "NoError", "nodeType": "MemberAccess", "referencedDeclaration": 11739, "src": "625:20:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "616:29:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11759, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11756, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "712:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11757, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "721:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11758, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignature", "nodeType": "MemberAccess", "referencedDeclaration": 11740, "src": "721:29:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "712:38:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11768, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11765, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "821:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11766, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "830:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11767, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureLength", "nodeType": "MemberAccess", "referencedDeclaration": 11741, "src": "830:35:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "821:44:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11777, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11774, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "943:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11775, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "952:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11776, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureS", "nodeType": "MemberAccess", "referencedDeclaration": 11742, "src": "952:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "943:39:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11786, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11783, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "1063:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11784, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "1072:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11785, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureV", "nodeType": "MemberAccess", "referencedDeclaration": 11743, "src": "1072:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "1063:39:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11792, "nodeType": "IfStatement", "src": "1059:114:57", "trueBody": { "id": 11791, "nodeType": "Block", "src": "1104:69:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202776272076616c7565", "id": 11788, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1125:36:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" }, "value": "ECDSA: invalid signature 'v' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" } ], "id": 11787, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "1118:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11789, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1118:44:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11790, "nodeType": "ExpressionStatement", "src": "1118:44:57" } ] } }, "id": 11793, "nodeType": "IfStatement", "src": "939:234:57", "trueBody": { "id": 11782, "nodeType": "Block", "src": "984:69:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202773272076616c7565", "id": 11779, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1005:36:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" }, "value": "ECDSA: invalid signature 's' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" } ], "id": 11778, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "998:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11780, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "998:44:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11781, "nodeType": "ExpressionStatement", "src": "998:44:57" } ] } }, "id": 11794, "nodeType": "IfStatement", "src": "817:356:57", "trueBody": { "id": 11773, "nodeType": "Block", "src": "867:66:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265206c656e677468", "id": 11770, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "888:33:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1669ff3ba3cdf64474e1193492d05b8434e29b0b495e60095eb5f5c8ec14ce77", "typeString": "literal_string \"ECDSA: invalid signature length\"" }, "value": "ECDSA: invalid signature length" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1669ff3ba3cdf64474e1193492d05b8434e29b0b495e60095eb5f5c8ec14ce77", "typeString": "literal_string \"ECDSA: invalid signature length\"" } ], "id": 11769, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "881:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11771, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "881:41:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11772, "nodeType": "ExpressionStatement", "src": "881:41:57" } ] } }, "id": 11795, "nodeType": "IfStatement", "src": "708:465:57", "trueBody": { "id": 11764, "nodeType": "Block", "src": "752:59:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265", "id": 11761, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "773:26:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" }, "value": "ECDSA: invalid signature" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" } ], "id": 11760, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "766:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11762, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "766:34:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11763, "nodeType": "ExpressionStatement", "src": "766:34:57" } ] } }, "id": 11796, "nodeType": "IfStatement", "src": "612:561:57", "trueBody": { "id": 11755, "nodeType": "Block", "src": "647:55:57", "statements": [ { "functionReturnParameters": 11749, "id": 11754, "nodeType": "Return", "src": "661:7:57" } ] } } ] }, "id": 11798, "implemented": true, "kind": "function", "modifiers": [], "name": "_throwError", "nameLocation": "557:11:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11748, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11747, "mutability": "mutable", "name": "error", "nameLocation": "582:5:57", "nodeType": "VariableDeclaration", "scope": 11798, "src": "569:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11746, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11745, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "569:12:57" }, "referencedDeclaration": 11744, "src": "569:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "568:20:57" }, "returnParameters": { "id": 11749, "nodeType": "ParameterList", "parameters": [], "src": "602:0:57" }, "scope": 12122, "src": "548:631:57", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 11843, "nodeType": "Block", "src": "2347:626:57", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11814, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 11811, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11803, "src": "2361:9:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 11812, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2361:16:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "3635", "id": 11813, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2381:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_65_by_1", "typeString": "int_const 65" }, "value": "65" }, "src": "2361:22:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 11841, "nodeType": "Block", "src": "2886:81:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 11835, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2916:1:57", "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": 11834, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2908:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11833, "name": "address", "nodeType": "ElementaryTypeName", "src": "2908:7:57", "typeDescriptions": {} } }, "id": 11836, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2908:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 11837, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "2920:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11838, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureLength", "nodeType": "MemberAccess", "referencedDeclaration": 11741, "src": "2920:35:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 11839, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "2907:49:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11810, "id": 11840, "nodeType": "Return", "src": "2900:56:57" } ] }, "id": 11842, "nodeType": "IfStatement", "src": "2357:610:57", "trueBody": { "id": 11832, "nodeType": "Block", "src": "2385:495:57", "statements": [ { "assignments": [ 11816 ], "declarations": [ { "constant": false, "id": 11816, "mutability": "mutable", "name": "r", "nameLocation": "2407:1:57", "nodeType": "VariableDeclaration", "scope": 11832, "src": "2399:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11815, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2399:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 11817, "nodeType": "VariableDeclarationStatement", "src": "2399:9:57" }, { "assignments": [ 11819 ], "declarations": [ { "constant": false, "id": 11819, "mutability": "mutable", "name": "s", "nameLocation": "2430:1:57", "nodeType": "VariableDeclaration", "scope": 11832, "src": "2422:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11818, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2422:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 11820, "nodeType": "VariableDeclarationStatement", "src": "2422:9:57" }, { "assignments": [ 11822 ], "declarations": [ { "constant": false, "id": 11822, "mutability": "mutable", "name": "v", "nameLocation": "2451:1:57", "nodeType": "VariableDeclaration", "scope": 11832, "src": "2445:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 11821, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "2445:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 11823, "nodeType": "VariableDeclarationStatement", "src": "2445:7:57" }, { "AST": { "nodeType": "YulBlock", "src": "2653:171:57", "statements": [ { "nodeType": "YulAssignment", "src": "2671:32:57", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2686:9:57" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2697:4:57", "type": "", "value": "0x20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2682:3:57" }, "nodeType": "YulFunctionCall", "src": "2682:20:57" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2676:5:57" }, "nodeType": "YulFunctionCall", "src": "2676:27:57" }, "variableNames": [ { "name": "r", "nodeType": "YulIdentifier", "src": "2671:1:57" } ] }, { "nodeType": "YulAssignment", "src": "2720:32:57", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2735:9:57" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2746:4:57", "type": "", "value": "0x40" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2731:3:57" }, "nodeType": "YulFunctionCall", "src": "2731:20:57" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2725:5:57" }, "nodeType": "YulFunctionCall", "src": "2725:27:57" }, "variableNames": [ { "name": "s", "nodeType": "YulIdentifier", "src": "2720:1:57" } ] }, { "nodeType": "YulAssignment", "src": "2769:41:57", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "2779:1:57", "type": "", "value": "0" }, { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2792:9:57" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2803:4:57", "type": "", "value": "0x60" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2788:3:57" }, "nodeType": "YulFunctionCall", "src": "2788:20:57" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2782:5:57" }, "nodeType": "YulFunctionCall", "src": "2782:27:57" } ], "functionName": { "name": "byte", "nodeType": "YulIdentifier", "src": "2774:4:57" }, "nodeType": "YulFunctionCall", "src": "2774:36:57" }, "variableNames": [ { "name": "v", "nodeType": "YulIdentifier", "src": "2769:1:57" } ] } ] }, "documentation": "@solidity memory-safe-assembly", "evmVersion": "london", "externalReferences": [ { "declaration": 11816, "isOffset": false, "isSlot": false, "src": "2671:1:57", "valueSize": 1 }, { "declaration": 11819, "isOffset": false, "isSlot": false, "src": "2720:1:57", "valueSize": 1 }, { "declaration": 11803, "isOffset": false, "isSlot": false, "src": "2686:9:57", "valueSize": 1 }, { "declaration": 11803, "isOffset": false, "isSlot": false, "src": "2735:9:57", "valueSize": 1 }, { "declaration": 11803, "isOffset": false, "isSlot": false, "src": "2792:9:57", "valueSize": 1 }, { "declaration": 11822, "isOffset": false, "isSlot": false, "src": "2769:1:57", "valueSize": 1 } ], "id": 11824, "nodeType": "InlineAssembly", "src": "2644:180:57" }, { "expression": { "arguments": [ { "id": 11826, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11801, "src": "2855:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11827, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11822, "src": "2861:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 11828, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11816, "src": "2864:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11829, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11819, "src": "2867:1:57", "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": 11825, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 12029, "src": "2844:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11830, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2844:25:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11810, "id": 11831, "nodeType": "Return", "src": "2837:32:57" } ] } } ] }, "documentation": { "id": 11799, "nodeType": "StructuredDocumentation", "src": "1185:1053:57", "text": " @dev Returns the address that signed a hashed message (`hash`) with\n `signature` or error string. This address can then be used for verification purposes.\n The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n this function rejects them by requiring the `s` value to be in the lower\n half order, and the `v` value to be either 27 or 28.\n IMPORTANT: `hash` _must_ be the result of a hash operation for the\n verification to be secure: it is possible to craft signatures that\n recover to arbitrary addresses for non-hashed data. A safe way to ensure\n this is by receiving a hash of the original message (which may otherwise\n be too long), and then calling {toEthSignedMessageHash} on it.\n Documentation for signature generation:\n - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n _Available since v4.3._" }, "id": 11844, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "2252:10:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11804, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11801, "mutability": "mutable", "name": "hash", "nameLocation": "2271:4:57", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2263:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11800, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2263:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11803, "mutability": "mutable", "name": "signature", "nameLocation": "2290:9:57", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2277:22:57", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 11802, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2277:5:57", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "2262:38:57" }, "returnParameters": { "id": 11810, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11806, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2324:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11805, "name": "address", "nodeType": "ElementaryTypeName", "src": "2324:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11809, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2333:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11808, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11807, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "2333:12:57" }, "referencedDeclaration": 11744, "src": "2333:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "2323:23:57" }, "scope": 12122, "src": "2243:730:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 11870, "nodeType": "Block", "src": "3846:140:57", "statements": [ { "assignments": [ 11855, 11858 ], "declarations": [ { "constant": false, "id": 11855, "mutability": "mutable", "name": "recovered", "nameLocation": "3865:9:57", "nodeType": "VariableDeclaration", "scope": 11870, "src": "3857:17:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11854, "name": "address", "nodeType": "ElementaryTypeName", "src": "3857:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11858, "mutability": "mutable", "name": "error", "nameLocation": "3889:5:57", "nodeType": "VariableDeclaration", "scope": 11870, "src": "3876:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11857, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11856, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "3876:12:57" }, "referencedDeclaration": 11744, "src": "3876:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 11863, "initialValue": { "arguments": [ { "id": 11860, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11847, "src": "3909:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11861, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11849, "src": "3915:9:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11859, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 11844, "src": "3898:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,bytes memory) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11862, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3898:27:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "3856:69:57" }, { "expression": { "arguments": [ { "id": 11865, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11858, "src": "3947:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } ], "id": 11864, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11798, "src": "3935:11:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$11744_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 11866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3935:18:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11867, "nodeType": "ExpressionStatement", "src": "3935:18:57" }, { "expression": { "id": 11868, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11855, "src": "3970:9:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11853, "id": 11869, "nodeType": "Return", "src": "3963:16:57" } ] }, "documentation": { "id": 11845, "nodeType": "StructuredDocumentation", "src": "2979:775:57", "text": " @dev Returns the address that signed a hashed message (`hash`) with\n `signature`. This address can then be used for verification purposes.\n The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n this function rejects them by requiring the `s` value to be in the lower\n half order, and the `v` value to be either 27 or 28.\n IMPORTANT: `hash` _must_ be the result of a hash operation for the\n verification to be secure: it is possible to craft signatures that\n recover to arbitrary addresses for non-hashed data. A safe way to ensure\n this is by receiving a hash of the original message (which may otherwise\n be too long), and then calling {toEthSignedMessageHash} on it." }, "id": 11871, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "3768:7:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11850, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11847, "mutability": "mutable", "name": "hash", "nameLocation": "3784:4:57", "nodeType": "VariableDeclaration", "scope": 11871, "src": "3776:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11846, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3776:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11849, "mutability": "mutable", "name": "signature", "nameLocation": "3803:9:57", "nodeType": "VariableDeclaration", "scope": 11871, "src": "3790:22:57", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 11848, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3790:5:57", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3775:38:57" }, "returnParameters": { "id": 11853, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11852, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11871, "src": "3837:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11851, "name": "address", "nodeType": "ElementaryTypeName", "src": "3837:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "3836:9:57" }, "scope": 12122, "src": "3759:227:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 11917, "nodeType": "Block", "src": "4373:203:57", "statements": [ { "assignments": [ 11887 ], "declarations": [ { "constant": false, "id": 11887, "mutability": "mutable", "name": "s", "nameLocation": "4391:1:57", "nodeType": "VariableDeclaration", "scope": 11917, "src": "4383:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11886, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4383:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 11894, "initialValue": { "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 11893, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11888, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11878, "src": "4395:2:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "arguments": [ { "hexValue": "307837666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666", "id": 11891, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4408:66:57", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819967_by_1", "typeString": "int_const 5789...(69 digits omitted)...9967" }, "value": "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819967_by_1", "typeString": "int_const 5789...(69 digits omitted)...9967" } ], "id": 11890, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4400:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 11889, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4400:7:57", "typeDescriptions": {} } }, "id": 11892, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4400:75:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "4395:80:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "4383:92:57" }, { "assignments": [ 11896 ], "declarations": [ { "constant": false, "id": 11896, "mutability": "mutable", "name": "v", "nameLocation": "4491:1:57", "nodeType": "VariableDeclaration", "scope": 11917, "src": "4485:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 11895, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "4485:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 11909, "initialValue": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11907, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11904, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 11901, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11878, "src": "4510:2:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 11900, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4502:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 11899, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4502:7:57", "typeDescriptions": {} } }, "id": 11902, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4502:11:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">>", "rightExpression": { "hexValue": "323535", "id": 11903, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4517:3:57", "typeDescriptions": { "typeIdentifier": "t_rational_255_by_1", "typeString": "int_const 255" }, "value": "255" }, "src": "4502:18:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 11905, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "4501:20:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "3237", "id": 11906, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4524:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "4501:25:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11898, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4495:5:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint8_$", "typeString": "type(uint8)" }, "typeName": { "id": 11897, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "4495:5:57", "typeDescriptions": {} } }, "id": 11908, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4495:32:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "VariableDeclarationStatement", "src": "4485:42:57" }, { "expression": { "arguments": [ { "id": 11911, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11874, "src": "4555:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11912, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11896, "src": "4561:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 11913, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "4564:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11914, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11887, "src": "4567:1:57", "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": 11910, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 12029, "src": "4544:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11915, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4544:25:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11885, "id": 11916, "nodeType": "Return", "src": "4537:32:57" } ] }, "documentation": { "id": 11872, "nodeType": "StructuredDocumentation", "src": "3992:243:57", "text": " @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n _Available since v4.3._" }, "id": 11918, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "4249:10:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11879, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11874, "mutability": "mutable", "name": "hash", "nameLocation": "4277:4:57", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4269:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11873, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4269:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11876, "mutability": "mutable", "name": "r", "nameLocation": "4299:1:57", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4291:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11875, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4291:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11878, "mutability": "mutable", "name": "vs", "nameLocation": "4318:2:57", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4310:10:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11877, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4310:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "4259:67:57" }, "returnParameters": { "id": 11885, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11881, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4350:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11880, "name": "address", "nodeType": "ElementaryTypeName", "src": "4350:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11884, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4359:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11883, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11882, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "4359:12:57" }, "referencedDeclaration": 11744, "src": "4359:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "4349:23:57" }, "scope": 12122, "src": "4240:336:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 11947, "nodeType": "Block", "src": "4857:136:57", "statements": [ { "assignments": [ 11931, 11934 ], "declarations": [ { "constant": false, "id": 11931, "mutability": "mutable", "name": "recovered", "nameLocation": "4876:9:57", "nodeType": "VariableDeclaration", "scope": 11947, "src": "4868:17:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11930, "name": "address", "nodeType": "ElementaryTypeName", "src": "4868:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11934, "mutability": "mutable", "name": "error", "nameLocation": "4900:5:57", "nodeType": "VariableDeclaration", "scope": 11947, "src": "4887:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11933, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11932, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "4887:12:57" }, "referencedDeclaration": 11744, "src": "4887:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 11940, "initialValue": { "arguments": [ { "id": 11936, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11921, "src": "4920:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11937, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11923, "src": "4926:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11938, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11925, "src": "4929:2:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 11935, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 11918, "src": "4909:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11939, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4909:23:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "4867:65:57" }, { "expression": { "arguments": [ { "id": 11942, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11934, "src": "4954:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } ], "id": 11941, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11798, "src": "4942:11:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$11744_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 11943, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4942:18:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11944, "nodeType": "ExpressionStatement", "src": "4942:18:57" }, { "expression": { "id": 11945, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11931, "src": "4977:9:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11929, "id": 11946, "nodeType": "Return", "src": "4970:16:57" } ] }, "documentation": { "id": 11919, "nodeType": "StructuredDocumentation", "src": "4582:154:57", "text": " @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n _Available since v4.2._" }, "id": 11948, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "4750:7:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11926, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11921, "mutability": "mutable", "name": "hash", "nameLocation": "4775:4:57", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4767:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11920, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4767:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11923, "mutability": "mutable", "name": "r", "nameLocation": "4797:1:57", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4789:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11922, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4789:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11925, "mutability": "mutable", "name": "vs", "nameLocation": "4816:2:57", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4808:10:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11924, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4808:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "4757:67:57" }, "returnParameters": { "id": 11929, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11928, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4848:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11927, "name": "address", "nodeType": "ElementaryTypeName", "src": "4848:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "4847:9:57" }, "scope": 12122, "src": "4741:252:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12028, "nodeType": "Block", "src": "5316:1454:57", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11970, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 11967, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11957, "src": "6212:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 11966, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6204:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 11965, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6204:7:57", "typeDescriptions": {} } }, "id": 11968, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6204:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "hexValue": "307837464646464646464646464646464646464646464646464646464646464646463544353736453733353741343530314444464539324634363638314232304130", "id": 11969, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6217:66:57", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926418782139537452191302581570759080747168_by_1", "typeString": "int_const 5789...(69 digits omitted)...7168" }, "value": "0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0" }, "src": "6204:79:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11980, "nodeType": "IfStatement", "src": "6200:161:57", "trueBody": { "id": 11979, "nodeType": "Block", "src": "6285:76:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 11973, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6315:1:57", "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": 11972, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6307:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11971, "name": "address", "nodeType": "ElementaryTypeName", "src": "6307:7:57", "typeDescriptions": {} } }, "id": 11974, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6307:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 11975, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6319:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11976, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureS", "nodeType": "MemberAccess", "referencedDeclaration": 11742, "src": "6319:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 11977, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6306:44:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 11978, "nodeType": "Return", "src": "6299:51:57" } ] } }, { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 11987, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 11983, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11981, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11953, "src": "6374:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3237", "id": 11982, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6379:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "6374:7:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 11986, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11984, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11953, "src": "6385:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3238", "id": 11985, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6390:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_28_by_1", "typeString": "int_const 28" }, "value": "28" }, "src": "6385:7:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "6374:18:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11997, "nodeType": "IfStatement", "src": "6370:100:57", "trueBody": { "id": 11996, "nodeType": "Block", "src": "6394:76:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 11990, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6424:1:57", "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": 11989, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6416:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11988, "name": "address", "nodeType": "ElementaryTypeName", "src": "6416:7:57", "typeDescriptions": {} } }, "id": 11991, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6416:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 11992, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6428:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11993, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureV", "nodeType": "MemberAccess", "referencedDeclaration": 11743, "src": "6428:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 11994, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6415:44:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 11995, "nodeType": "Return", "src": "6408:51:57" } ] } }, { "assignments": [ 11999 ], "declarations": [ { "constant": false, "id": 11999, "mutability": "mutable", "name": "signer", "nameLocation": "6572:6:57", "nodeType": "VariableDeclaration", "scope": 12028, "src": "6564:14:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11998, "name": "address", "nodeType": "ElementaryTypeName", "src": "6564:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 12006, "initialValue": { "arguments": [ { "id": 12001, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11951, "src": "6591:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12002, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11953, "src": "6597:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 12003, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11955, "src": "6600:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12004, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11957, "src": "6603:1:57", "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": 12000, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967290, "src": "6581:9:57", "typeDescriptions": { "typeIdentifier": "t_function_ecrecover_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 12005, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6581:24:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "6564:41:57" }, { "condition": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 12012, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 12007, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11999, "src": "6619:6:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 12010, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6637:1:57", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 12009, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6629:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 12008, "name": "address", "nodeType": "ElementaryTypeName", "src": "6629:7:57", "typeDescriptions": {} } }, "id": 12011, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6629:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "6619:20:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 12022, "nodeType": "IfStatement", "src": "6615:101:57", "trueBody": { "id": 12021, "nodeType": "Block", "src": "6641:75:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 12015, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6671:1:57", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 12014, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6663:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 12013, "name": "address", "nodeType": "ElementaryTypeName", "src": "6663:7:57", "typeDescriptions": {} } }, "id": 12016, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6663:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 12017, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6675:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 12018, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignature", "nodeType": "MemberAccess", "referencedDeclaration": 11740, "src": "6675:29:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 12019, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6662:43:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 12020, "nodeType": "Return", "src": "6655:50:57" } ] } }, { "expression": { "components": [ { "id": 12023, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11999, "src": "6734:6:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 12024, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6742:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 12025, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "NoError", "nodeType": "MemberAccess", "referencedDeclaration": 11739, "src": "6742:20:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 12026, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6733:30:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 12027, "nodeType": "Return", "src": "6726:37:57" } ] }, "documentation": { "id": 11949, "nodeType": "StructuredDocumentation", "src": "4999:163:57", "text": " @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n `r` and `s` signature fields separately.\n _Available since v4.3._" }, "id": 12029, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "5176:10:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11958, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11951, "mutability": "mutable", "name": "hash", "nameLocation": "5204:4:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5196:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11950, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5196:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11953, "mutability": "mutable", "name": "v", "nameLocation": "5224:1:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5218:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 11952, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "5218:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 11955, "mutability": "mutable", "name": "r", "nameLocation": "5243:1:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5235:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11954, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5235:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11957, "mutability": "mutable", "name": "s", "nameLocation": "5262:1:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5254:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11956, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5254:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "5186:83:57" }, "returnParameters": { "id": 11964, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11960, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5293:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11959, "name": "address", "nodeType": "ElementaryTypeName", "src": "5293:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11963, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5302:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11962, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11961, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "5302:12:57" }, "referencedDeclaration": 11744, "src": "5302:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "5292:23:57" }, "scope": 12122, "src": "5167:1603:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12061, "nodeType": "Block", "src": "7035:138:57", "statements": [ { "assignments": [ 12044, 12047 ], "declarations": [ { "constant": false, "id": 12044, "mutability": "mutable", "name": "recovered", "nameLocation": "7054:9:57", "nodeType": "VariableDeclaration", "scope": 12061, "src": "7046:17:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12043, "name": "address", "nodeType": "ElementaryTypeName", "src": "7046:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 12047, "mutability": "mutable", "name": "error", "nameLocation": "7078:5:57", "nodeType": "VariableDeclaration", "scope": 12061, "src": "7065:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 12046, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 12045, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "7065:12:57" }, "referencedDeclaration": 11744, "src": "7065:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 12054, "initialValue": { "arguments": [ { "id": 12049, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12032, "src": "7098:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12050, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12034, "src": "7104:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 12051, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12036, "src": "7107:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12052, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12038, "src": "7110:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 12048, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 12029, "src": "7087:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 12053, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7087:25:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "7045:67:57" }, { "expression": { "arguments": [ { "id": 12056, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12047, "src": "7134:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } ], "id": 12055, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11798, "src": "7122:11:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$11744_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 12057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7122:18:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12058, "nodeType": "ExpressionStatement", "src": "7122:18:57" }, { "expression": { "id": 12059, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12044, "src": "7157:9:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 12042, "id": 12060, "nodeType": "Return", "src": "7150:16:57" } ] }, "documentation": { "id": 12030, "nodeType": "StructuredDocumentation", "src": "6776:122:57", "text": " @dev Overload of {ECDSA-recover} that receives the `v`,\n `r` and `s` signature fields separately." }, "id": 12062, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "6912:7:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12039, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12032, "mutability": "mutable", "name": "hash", "nameLocation": "6937:4:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6929:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12031, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6929:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 12034, "mutability": "mutable", "name": "v", "nameLocation": "6957:1:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6951:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 12033, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "6951:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 12036, "mutability": "mutable", "name": "r", "nameLocation": "6976:1:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6968:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12035, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6968:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 12038, "mutability": "mutable", "name": "s", "nameLocation": "6995:1:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6987:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12037, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6987:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "6919:83:57" }, "returnParameters": { "id": 12042, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12041, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12062, "src": "7026:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12040, "name": "address", "nodeType": "ElementaryTypeName", "src": "7026:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "7025:9:57" }, "scope": 12122, "src": "6903:270:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12078, "nodeType": "Block", "src": "7541:187:57", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a3332", "id": 12073, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7679:34:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, "value": "\u0019Ethereum Signed Message:\n32" }, { "id": 12074, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12065, "src": "7715:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 12071, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "7662:3:57", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12072, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "7662:16:57", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 12075, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7662:58:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 12070, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "7652:9:57", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 12076, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7652:69:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 12069, "id": 12077, "nodeType": "Return", "src": "7645:76:57" } ] }, "documentation": { "id": 12063, "nodeType": "StructuredDocumentation", "src": "7179:279:57", "text": " @dev Returns an Ethereum Signed Message, created from a `hash`. This\n produces hash corresponding to the one signed with the\n https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n JSON-RPC method as part of EIP-191.\n See {recover}." }, "id": 12079, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "nameLocation": "7472:22:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12066, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12065, "mutability": "mutable", "name": "hash", "nameLocation": "7503:4:57", "nodeType": "VariableDeclaration", "scope": 12079, "src": "7495:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12064, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7495:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "7494:14:57" }, "returnParameters": { "id": 12069, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12068, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12079, "src": "7532:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12067, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7532:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "7531:9:57" }, "scope": 12122, "src": "7463:265:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12100, "nodeType": "Block", "src": "8093:116:57", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a", "id": 12090, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8137:32:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_9af2d9c228f6cfddaa6d1e5b94e0bce4ab16bd9a472a2b7fbfd74ebff4c720b4", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a\"" }, "value": "\u0019Ethereum Signed Message:\n" }, { "arguments": [ { "expression": { "id": 12093, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12082, "src": "8188:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 12094, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "8188:8:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 12091, "name": "Strings", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11734, "src": "8171:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Strings_$11734_$", "typeString": "type(library Strings)" } }, "id": 12092, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "toString", "nodeType": "MemberAccess", "referencedDeclaration": 11596, "src": "8171:16:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$returns$_t_string_memory_ptr_$", "typeString": "function (uint256) pure returns (string memory)" } }, "id": 12095, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8171:26:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, { "id": 12096, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12082, "src": "8199:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_9af2d9c228f6cfddaa6d1e5b94e0bce4ab16bd9a472a2b7fbfd74ebff4c720b4", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a\"" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "id": 12088, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "8120:3:57", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12089, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "8120:16:57", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 12097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8120:81:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 12087, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "8110:9:57", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 12098, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8110:92:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 12086, "id": 12099, "nodeType": "Return", "src": "8103:99:57" } ] }, "documentation": { "id": 12080, "nodeType": "StructuredDocumentation", "src": "7734:274:57", "text": " @dev Returns an Ethereum Signed Message, created from `s`. This\n produces hash corresponding to the one signed with the\n https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n JSON-RPC method as part of EIP-191.\n See {recover}." }, "id": 12101, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "nameLocation": "8022:22:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12082, "mutability": "mutable", "name": "s", "nameLocation": "8058:1:57", "nodeType": "VariableDeclaration", "scope": 12101, "src": "8045:14:57", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 12081, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8045:5:57", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "8044:16:57" }, "returnParameters": { "id": 12086, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12085, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12101, "src": "8084:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12084, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8084:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8083:9:57" }, "scope": 12122, "src": "8013:196:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12120, "nodeType": "Block", "src": "8650:92:57", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "1901", "id": 12114, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8694:10:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, "value": "\u0019\u0001" }, { "id": 12115, "name": "domainSeparator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12104, "src": "8706:15:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12116, "name": "structHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12106, "src": "8723:10:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 12112, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "8677:3:57", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12113, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "8677:16:57", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 12117, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8677:57:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 12111, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "8667:9:57", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 12118, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8667:68:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 12110, "id": 12119, "nodeType": "Return", "src": "8660:75:57" } ] }, "documentation": { "id": 12102, "nodeType": "StructuredDocumentation", "src": "8215:328:57", "text": " @dev Returns an Ethereum Signed Typed Data, created from a\n `domainSeparator` and a `structHash`. This produces hash corresponding\n to the one signed with the\n https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n JSON-RPC method as part of EIP-712.\n See {recover}." }, "id": 12121, "implemented": true, "kind": "function", "modifiers": [], "name": "toTypedDataHash", "nameLocation": "8557:15:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12107, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12104, "mutability": "mutable", "name": "domainSeparator", "nameLocation": "8581:15:57", "nodeType": "VariableDeclaration", "scope": 12121, "src": "8573:23:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12103, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8573:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 12106, "mutability": "mutable", "name": "structHash", "nameLocation": "8606:10:57", "nodeType": "VariableDeclaration", "scope": 12121, "src": "8598:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12105, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8598:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8572:45:57" }, "returnParameters": { "id": 12110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12109, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12121, "src": "8641:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12108, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8641:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8640:9:57" }, "scope": 12122, "src": "8548:194:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 12123, "src": "369:8375:57", "usedErrors": [] } ], "src": "112:8633:57" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/utils/cryptography/ECDSA.sol", "exportedSymbols": { "ECDSA": [ 12122 ], "Strings": [ 11734 ] }, "id": 12123, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 11736, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "112:23:57" }, { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "file": "../Strings.sol", "id": 11737, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 12123, "sourceUnit": 11735, "src": "137:24:57", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 11738, "nodeType": "StructuredDocumentation", "src": "163:205:57", "text": " @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n These functions can be used to verify that a message was signed by the holder\n of the private keys of a given address." }, "fullyImplemented": true, "id": 12122, "linearizedBaseContracts": [ 12122 ], "name": "ECDSA", "nameLocation": "377:5:57", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "ECDSA.RecoverError", "id": 11744, "members": [ { "id": 11739, "name": "NoError", "nameLocation": "417:7:57", "nodeType": "EnumValue", "src": "417:7:57" }, { "id": 11740, "name": "InvalidSignature", "nameLocation": "434:16:57", "nodeType": "EnumValue", "src": "434:16:57" }, { "id": 11741, "name": "InvalidSignatureLength", "nameLocation": "460:22:57", "nodeType": "EnumValue", "src": "460:22:57" }, { "id": 11742, "name": "InvalidSignatureS", "nameLocation": "492:17:57", "nodeType": "EnumValue", "src": "492:17:57" }, { "id": 11743, "name": "InvalidSignatureV", "nameLocation": "519:17:57", "nodeType": "EnumValue", "src": "519:17:57" } ], "name": "RecoverError", "nameLocation": "394:12:57", "nodeType": "EnumDefinition", "src": "389:153:57" }, { "body": { "id": 11797, "nodeType": "Block", "src": "602:577:57", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11753, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11750, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "616:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11751, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "625:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11752, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "NoError", "nodeType": "MemberAccess", "referencedDeclaration": 11739, "src": "625:20:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "616:29:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11759, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11756, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "712:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11757, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "721:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11758, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignature", "nodeType": "MemberAccess", "referencedDeclaration": 11740, "src": "721:29:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "712:38:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11768, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11765, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "821:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11766, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "830:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11767, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureLength", "nodeType": "MemberAccess", "referencedDeclaration": 11741, "src": "830:35:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "821:44:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11777, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11774, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "943:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11775, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "952:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11776, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureS", "nodeType": "MemberAccess", "referencedDeclaration": 11742, "src": "952:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "943:39:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "id": 11786, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11783, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11747, "src": "1063:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 11784, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "1072:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11785, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureV", "nodeType": "MemberAccess", "referencedDeclaration": 11743, "src": "1072:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "src": "1063:39:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11792, "nodeType": "IfStatement", "src": "1059:114:57", "trueBody": { "id": 11791, "nodeType": "Block", "src": "1104:69:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202776272076616c7565", "id": 11788, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1125:36:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" }, "value": "ECDSA: invalid signature 'v' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" } ], "id": 11787, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "1118:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11789, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1118:44:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11790, "nodeType": "ExpressionStatement", "src": "1118:44:57" } ] } }, "id": 11793, "nodeType": "IfStatement", "src": "939:234:57", "trueBody": { "id": 11782, "nodeType": "Block", "src": "984:69:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202773272076616c7565", "id": 11779, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1005:36:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" }, "value": "ECDSA: invalid signature 's' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" } ], "id": 11778, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "998:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11780, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "998:44:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11781, "nodeType": "ExpressionStatement", "src": "998:44:57" } ] } }, "id": 11794, "nodeType": "IfStatement", "src": "817:356:57", "trueBody": { "id": 11773, "nodeType": "Block", "src": "867:66:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265206c656e677468", "id": 11770, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "888:33:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1669ff3ba3cdf64474e1193492d05b8434e29b0b495e60095eb5f5c8ec14ce77", "typeString": "literal_string \"ECDSA: invalid signature length\"" }, "value": "ECDSA: invalid signature length" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1669ff3ba3cdf64474e1193492d05b8434e29b0b495e60095eb5f5c8ec14ce77", "typeString": "literal_string \"ECDSA: invalid signature length\"" } ], "id": 11769, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "881:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11771, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "881:41:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11772, "nodeType": "ExpressionStatement", "src": "881:41:57" } ] } }, "id": 11795, "nodeType": "IfStatement", "src": "708:465:57", "trueBody": { "id": 11764, "nodeType": "Block", "src": "752:59:57", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265", "id": 11761, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "773:26:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" }, "value": "ECDSA: invalid signature" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" } ], "id": 11760, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "766:6:57", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 11762, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "766:34:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11763, "nodeType": "ExpressionStatement", "src": "766:34:57" } ] } }, "id": 11796, "nodeType": "IfStatement", "src": "612:561:57", "trueBody": { "id": 11755, "nodeType": "Block", "src": "647:55:57", "statements": [ { "functionReturnParameters": 11749, "id": 11754, "nodeType": "Return", "src": "661:7:57" } ] } } ] }, "id": 11798, "implemented": true, "kind": "function", "modifiers": [], "name": "_throwError", "nameLocation": "557:11:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11748, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11747, "mutability": "mutable", "name": "error", "nameLocation": "582:5:57", "nodeType": "VariableDeclaration", "scope": 11798, "src": "569:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11746, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11745, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "569:12:57" }, "referencedDeclaration": 11744, "src": "569:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "568:20:57" }, "returnParameters": { "id": 11749, "nodeType": "ParameterList", "parameters": [], "src": "602:0:57" }, "scope": 12122, "src": "548:631:57", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 11843, "nodeType": "Block", "src": "2347:626:57", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11814, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 11811, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11803, "src": "2361:9:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 11812, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2361:16:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "3635", "id": 11813, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2381:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_65_by_1", "typeString": "int_const 65" }, "value": "65" }, "src": "2361:22:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 11841, "nodeType": "Block", "src": "2886:81:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 11835, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2916:1:57", "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": 11834, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2908:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11833, "name": "address", "nodeType": "ElementaryTypeName", "src": "2908:7:57", "typeDescriptions": {} } }, "id": 11836, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2908:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 11837, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "2920:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11838, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureLength", "nodeType": "MemberAccess", "referencedDeclaration": 11741, "src": "2920:35:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 11839, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "2907:49:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11810, "id": 11840, "nodeType": "Return", "src": "2900:56:57" } ] }, "id": 11842, "nodeType": "IfStatement", "src": "2357:610:57", "trueBody": { "id": 11832, "nodeType": "Block", "src": "2385:495:57", "statements": [ { "assignments": [ 11816 ], "declarations": [ { "constant": false, "id": 11816, "mutability": "mutable", "name": "r", "nameLocation": "2407:1:57", "nodeType": "VariableDeclaration", "scope": 11832, "src": "2399:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11815, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2399:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 11817, "nodeType": "VariableDeclarationStatement", "src": "2399:9:57" }, { "assignments": [ 11819 ], "declarations": [ { "constant": false, "id": 11819, "mutability": "mutable", "name": "s", "nameLocation": "2430:1:57", "nodeType": "VariableDeclaration", "scope": 11832, "src": "2422:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11818, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2422:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 11820, "nodeType": "VariableDeclarationStatement", "src": "2422:9:57" }, { "assignments": [ 11822 ], "declarations": [ { "constant": false, "id": 11822, "mutability": "mutable", "name": "v", "nameLocation": "2451:1:57", "nodeType": "VariableDeclaration", "scope": 11832, "src": "2445:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 11821, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "2445:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 11823, "nodeType": "VariableDeclarationStatement", "src": "2445:7:57" }, { "AST": { "nodeType": "YulBlock", "src": "2653:171:57", "statements": [ { "nodeType": "YulAssignment", "src": "2671:32:57", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2686:9:57" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2697:4:57", "type": "", "value": "0x20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2682:3:57" }, "nodeType": "YulFunctionCall", "src": "2682:20:57" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2676:5:57" }, "nodeType": "YulFunctionCall", "src": "2676:27:57" }, "variableNames": [ { "name": "r", "nodeType": "YulIdentifier", "src": "2671:1:57" } ] }, { "nodeType": "YulAssignment", "src": "2720:32:57", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2735:9:57" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2746:4:57", "type": "", "value": "0x40" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2731:3:57" }, "nodeType": "YulFunctionCall", "src": "2731:20:57" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2725:5:57" }, "nodeType": "YulFunctionCall", "src": "2725:27:57" }, "variableNames": [ { "name": "s", "nodeType": "YulIdentifier", "src": "2720:1:57" } ] }, { "nodeType": "YulAssignment", "src": "2769:41:57", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "2779:1:57", "type": "", "value": "0" }, { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2792:9:57" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2803:4:57", "type": "", "value": "0x60" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2788:3:57" }, "nodeType": "YulFunctionCall", "src": "2788:20:57" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2782:5:57" }, "nodeType": "YulFunctionCall", "src": "2782:27:57" } ], "functionName": { "name": "byte", "nodeType": "YulIdentifier", "src": "2774:4:57" }, "nodeType": "YulFunctionCall", "src": "2774:36:57" }, "variableNames": [ { "name": "v", "nodeType": "YulIdentifier", "src": "2769:1:57" } ] } ] }, "documentation": "@solidity memory-safe-assembly", "evmVersion": "london", "externalReferences": [ { "declaration": 11816, "isOffset": false, "isSlot": false, "src": "2671:1:57", "valueSize": 1 }, { "declaration": 11819, "isOffset": false, "isSlot": false, "src": "2720:1:57", "valueSize": 1 }, { "declaration": 11803, "isOffset": false, "isSlot": false, "src": "2686:9:57", "valueSize": 1 }, { "declaration": 11803, "isOffset": false, "isSlot": false, "src": "2735:9:57", "valueSize": 1 }, { "declaration": 11803, "isOffset": false, "isSlot": false, "src": "2792:9:57", "valueSize": 1 }, { "declaration": 11822, "isOffset": false, "isSlot": false, "src": "2769:1:57", "valueSize": 1 } ], "id": 11824, "nodeType": "InlineAssembly", "src": "2644:180:57" }, { "expression": { "arguments": [ { "id": 11826, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11801, "src": "2855:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11827, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11822, "src": "2861:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 11828, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11816, "src": "2864:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11829, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11819, "src": "2867:1:57", "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": 11825, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 12029, "src": "2844:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11830, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2844:25:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11810, "id": 11831, "nodeType": "Return", "src": "2837:32:57" } ] } } ] }, "documentation": { "id": 11799, "nodeType": "StructuredDocumentation", "src": "1185:1053:57", "text": " @dev Returns the address that signed a hashed message (`hash`) with\n `signature` or error string. This address can then be used for verification purposes.\n The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n this function rejects them by requiring the `s` value to be in the lower\n half order, and the `v` value to be either 27 or 28.\n IMPORTANT: `hash` _must_ be the result of a hash operation for the\n verification to be secure: it is possible to craft signatures that\n recover to arbitrary addresses for non-hashed data. A safe way to ensure\n this is by receiving a hash of the original message (which may otherwise\n be too long), and then calling {toEthSignedMessageHash} on it.\n Documentation for signature generation:\n - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n _Available since v4.3._" }, "id": 11844, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "2252:10:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11804, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11801, "mutability": "mutable", "name": "hash", "nameLocation": "2271:4:57", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2263:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11800, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2263:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11803, "mutability": "mutable", "name": "signature", "nameLocation": "2290:9:57", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2277:22:57", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 11802, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2277:5:57", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "2262:38:57" }, "returnParameters": { "id": 11810, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11806, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2324:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11805, "name": "address", "nodeType": "ElementaryTypeName", "src": "2324:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11809, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11844, "src": "2333:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11808, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11807, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "2333:12:57" }, "referencedDeclaration": 11744, "src": "2333:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "2323:23:57" }, "scope": 12122, "src": "2243:730:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 11870, "nodeType": "Block", "src": "3846:140:57", "statements": [ { "assignments": [ 11855, 11858 ], "declarations": [ { "constant": false, "id": 11855, "mutability": "mutable", "name": "recovered", "nameLocation": "3865:9:57", "nodeType": "VariableDeclaration", "scope": 11870, "src": "3857:17:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11854, "name": "address", "nodeType": "ElementaryTypeName", "src": "3857:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11858, "mutability": "mutable", "name": "error", "nameLocation": "3889:5:57", "nodeType": "VariableDeclaration", "scope": 11870, "src": "3876:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11857, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11856, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "3876:12:57" }, "referencedDeclaration": 11744, "src": "3876:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 11863, "initialValue": { "arguments": [ { "id": 11860, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11847, "src": "3909:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11861, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11849, "src": "3915:9:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11859, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 11844, "src": "3898:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,bytes memory) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11862, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3898:27:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "3856:69:57" }, { "expression": { "arguments": [ { "id": 11865, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11858, "src": "3947:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } ], "id": 11864, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11798, "src": "3935:11:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$11744_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 11866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3935:18:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11867, "nodeType": "ExpressionStatement", "src": "3935:18:57" }, { "expression": { "id": 11868, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11855, "src": "3970:9:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11853, "id": 11869, "nodeType": "Return", "src": "3963:16:57" } ] }, "documentation": { "id": 11845, "nodeType": "StructuredDocumentation", "src": "2979:775:57", "text": " @dev Returns the address that signed a hashed message (`hash`) with\n `signature`. This address can then be used for verification purposes.\n The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n this function rejects them by requiring the `s` value to be in the lower\n half order, and the `v` value to be either 27 or 28.\n IMPORTANT: `hash` _must_ be the result of a hash operation for the\n verification to be secure: it is possible to craft signatures that\n recover to arbitrary addresses for non-hashed data. A safe way to ensure\n this is by receiving a hash of the original message (which may otherwise\n be too long), and then calling {toEthSignedMessageHash} on it." }, "id": 11871, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "3768:7:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11850, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11847, "mutability": "mutable", "name": "hash", "nameLocation": "3784:4:57", "nodeType": "VariableDeclaration", "scope": 11871, "src": "3776:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11846, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3776:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11849, "mutability": "mutable", "name": "signature", "nameLocation": "3803:9:57", "nodeType": "VariableDeclaration", "scope": 11871, "src": "3790:22:57", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 11848, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3790:5:57", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3775:38:57" }, "returnParameters": { "id": 11853, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11852, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11871, "src": "3837:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11851, "name": "address", "nodeType": "ElementaryTypeName", "src": "3837:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "3836:9:57" }, "scope": 12122, "src": "3759:227:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 11917, "nodeType": "Block", "src": "4373:203:57", "statements": [ { "assignments": [ 11887 ], "declarations": [ { "constant": false, "id": 11887, "mutability": "mutable", "name": "s", "nameLocation": "4391:1:57", "nodeType": "VariableDeclaration", "scope": 11917, "src": "4383:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11886, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4383:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 11894, "initialValue": { "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 11893, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11888, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11878, "src": "4395:2:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "arguments": [ { "hexValue": "307837666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666", "id": 11891, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4408:66:57", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819967_by_1", "typeString": "int_const 5789...(69 digits omitted)...9967" }, "value": "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819967_by_1", "typeString": "int_const 5789...(69 digits omitted)...9967" } ], "id": 11890, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4400:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 11889, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4400:7:57", "typeDescriptions": {} } }, "id": 11892, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4400:75:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "4395:80:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "4383:92:57" }, { "assignments": [ 11896 ], "declarations": [ { "constant": false, "id": 11896, "mutability": "mutable", "name": "v", "nameLocation": "4491:1:57", "nodeType": "VariableDeclaration", "scope": 11917, "src": "4485:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 11895, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "4485:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 11909, "initialValue": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11907, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11904, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 11901, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11878, "src": "4510:2:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 11900, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4502:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 11899, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4502:7:57", "typeDescriptions": {} } }, "id": 11902, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4502:11:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">>", "rightExpression": { "hexValue": "323535", "id": 11903, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4517:3:57", "typeDescriptions": { "typeIdentifier": "t_rational_255_by_1", "typeString": "int_const 255" }, "value": "255" }, "src": "4502:18:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 11905, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "4501:20:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "3237", "id": 11906, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4524:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "4501:25:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11898, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4495:5:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint8_$", "typeString": "type(uint8)" }, "typeName": { "id": 11897, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "4495:5:57", "typeDescriptions": {} } }, "id": 11908, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4495:32:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "VariableDeclarationStatement", "src": "4485:42:57" }, { "expression": { "arguments": [ { "id": 11911, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11874, "src": "4555:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11912, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11896, "src": "4561:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 11913, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "4564:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11914, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11887, "src": "4567:1:57", "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": 11910, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 12029, "src": "4544:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11915, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4544:25:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11885, "id": 11916, "nodeType": "Return", "src": "4537:32:57" } ] }, "documentation": { "id": 11872, "nodeType": "StructuredDocumentation", "src": "3992:243:57", "text": " @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n _Available since v4.3._" }, "id": 11918, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "4249:10:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11879, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11874, "mutability": "mutable", "name": "hash", "nameLocation": "4277:4:57", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4269:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11873, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4269:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11876, "mutability": "mutable", "name": "r", "nameLocation": "4299:1:57", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4291:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11875, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4291:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11878, "mutability": "mutable", "name": "vs", "nameLocation": "4318:2:57", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4310:10:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11877, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4310:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "4259:67:57" }, "returnParameters": { "id": 11885, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11881, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4350:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11880, "name": "address", "nodeType": "ElementaryTypeName", "src": "4350:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11884, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11918, "src": "4359:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11883, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11882, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "4359:12:57" }, "referencedDeclaration": 11744, "src": "4359:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "4349:23:57" }, "scope": 12122, "src": "4240:336:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 11947, "nodeType": "Block", "src": "4857:136:57", "statements": [ { "assignments": [ 11931, 11934 ], "declarations": [ { "constant": false, "id": 11931, "mutability": "mutable", "name": "recovered", "nameLocation": "4876:9:57", "nodeType": "VariableDeclaration", "scope": 11947, "src": "4868:17:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11930, "name": "address", "nodeType": "ElementaryTypeName", "src": "4868:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11934, "mutability": "mutable", "name": "error", "nameLocation": "4900:5:57", "nodeType": "VariableDeclaration", "scope": 11947, "src": "4887:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11933, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11932, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "4887:12:57" }, "referencedDeclaration": 11744, "src": "4887:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 11940, "initialValue": { "arguments": [ { "id": 11936, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11921, "src": "4920:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11937, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11923, "src": "4926:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 11938, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11925, "src": "4929:2:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 11935, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 11918, "src": "4909:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 11939, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4909:23:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "4867:65:57" }, { "expression": { "arguments": [ { "id": 11942, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11934, "src": "4954:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } ], "id": 11941, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11798, "src": "4942:11:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$11744_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 11943, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4942:18:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11944, "nodeType": "ExpressionStatement", "src": "4942:18:57" }, { "expression": { "id": 11945, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11931, "src": "4977:9:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11929, "id": 11946, "nodeType": "Return", "src": "4970:16:57" } ] }, "documentation": { "id": 11919, "nodeType": "StructuredDocumentation", "src": "4582:154:57", "text": " @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n _Available since v4.2._" }, "id": 11948, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "4750:7:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11926, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11921, "mutability": "mutable", "name": "hash", "nameLocation": "4775:4:57", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4767:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11920, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4767:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11923, "mutability": "mutable", "name": "r", "nameLocation": "4797:1:57", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4789:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11922, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4789:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11925, "mutability": "mutable", "name": "vs", "nameLocation": "4816:2:57", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4808:10:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11924, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4808:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "4757:67:57" }, "returnParameters": { "id": 11929, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11928, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 11948, "src": "4848:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11927, "name": "address", "nodeType": "ElementaryTypeName", "src": "4848:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "4847:9:57" }, "scope": 12122, "src": "4741:252:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12028, "nodeType": "Block", "src": "5316:1454:57", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11970, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 11967, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11957, "src": "6212:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 11966, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6204:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 11965, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6204:7:57", "typeDescriptions": {} } }, "id": 11968, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6204:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "hexValue": "307837464646464646464646464646464646464646464646464646464646464646463544353736453733353741343530314444464539324634363638314232304130", "id": 11969, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6217:66:57", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926418782139537452191302581570759080747168_by_1", "typeString": "int_const 5789...(69 digits omitted)...7168" }, "value": "0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0" }, "src": "6204:79:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11980, "nodeType": "IfStatement", "src": "6200:161:57", "trueBody": { "id": 11979, "nodeType": "Block", "src": "6285:76:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 11973, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6315:1:57", "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": 11972, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6307:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11971, "name": "address", "nodeType": "ElementaryTypeName", "src": "6307:7:57", "typeDescriptions": {} } }, "id": 11974, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6307:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 11975, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6319:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11976, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureS", "nodeType": "MemberAccess", "referencedDeclaration": 11742, "src": "6319:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 11977, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6306:44:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 11978, "nodeType": "Return", "src": "6299:51:57" } ] } }, { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 11987, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 11983, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11981, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11953, "src": "6374:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3237", "id": 11982, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6379:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "6374:7:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 11986, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 11984, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11953, "src": "6385:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3238", "id": 11985, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6390:2:57", "typeDescriptions": { "typeIdentifier": "t_rational_28_by_1", "typeString": "int_const 28" }, "value": "28" }, "src": "6385:7:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "6374:18:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11997, "nodeType": "IfStatement", "src": "6370:100:57", "trueBody": { "id": 11996, "nodeType": "Block", "src": "6394:76:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 11990, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6424:1:57", "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": 11989, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6416:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11988, "name": "address", "nodeType": "ElementaryTypeName", "src": "6416:7:57", "typeDescriptions": {} } }, "id": 11991, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6416:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 11992, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6428:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 11993, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureV", "nodeType": "MemberAccess", "referencedDeclaration": 11743, "src": "6428:30:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 11994, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6415:44:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 11995, "nodeType": "Return", "src": "6408:51:57" } ] } }, { "assignments": [ 11999 ], "declarations": [ { "constant": false, "id": 11999, "mutability": "mutable", "name": "signer", "nameLocation": "6572:6:57", "nodeType": "VariableDeclaration", "scope": 12028, "src": "6564:14:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11998, "name": "address", "nodeType": "ElementaryTypeName", "src": "6564:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 12006, "initialValue": { "arguments": [ { "id": 12001, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11951, "src": "6591:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12002, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11953, "src": "6597:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 12003, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11955, "src": "6600:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12004, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11957, "src": "6603:1:57", "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": 12000, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967290, "src": "6581:9:57", "typeDescriptions": { "typeIdentifier": "t_function_ecrecover_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 12005, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6581:24:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "6564:41:57" }, { "condition": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 12012, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 12007, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11999, "src": "6619:6:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 12010, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6637:1:57", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 12009, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6629:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 12008, "name": "address", "nodeType": "ElementaryTypeName", "src": "6629:7:57", "typeDescriptions": {} } }, "id": 12011, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6629:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "6619:20:57", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 12022, "nodeType": "IfStatement", "src": "6615:101:57", "trueBody": { "id": 12021, "nodeType": "Block", "src": "6641:75:57", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 12015, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6671:1:57", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 12014, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6663:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 12013, "name": "address", "nodeType": "ElementaryTypeName", "src": "6663:7:57", "typeDescriptions": {} } }, "id": 12016, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6663:10:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 12017, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6675:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 12018, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignature", "nodeType": "MemberAccess", "referencedDeclaration": 11740, "src": "6675:29:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 12019, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6662:43:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 12020, "nodeType": "Return", "src": "6655:50:57" } ] } }, { "expression": { "components": [ { "id": 12023, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11999, "src": "6734:6:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 12024, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "6742:12:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$11744_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 12025, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "NoError", "nodeType": "MemberAccess", "referencedDeclaration": 11739, "src": "6742:20:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "id": 12026, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6733:30:57", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 11964, "id": 12027, "nodeType": "Return", "src": "6726:37:57" } ] }, "documentation": { "id": 11949, "nodeType": "StructuredDocumentation", "src": "4999:163:57", "text": " @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n `r` and `s` signature fields separately.\n _Available since v4.3._" }, "id": 12029, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "5176:10:57", "nodeType": "FunctionDefinition", "parameters": { "id": 11958, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11951, "mutability": "mutable", "name": "hash", "nameLocation": "5204:4:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5196:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11950, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5196:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11953, "mutability": "mutable", "name": "v", "nameLocation": "5224:1:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5218:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 11952, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "5218:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 11955, "mutability": "mutable", "name": "r", "nameLocation": "5243:1:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5235:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11954, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5235:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 11957, "mutability": "mutable", "name": "s", "nameLocation": "5262:1:57", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5254:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 11956, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5254:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "5186:83:57" }, "returnParameters": { "id": 11964, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11960, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5293:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11959, "name": "address", "nodeType": "ElementaryTypeName", "src": "5293:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 11963, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12029, "src": "5302:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 11962, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 11961, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "5302:12:57" }, "referencedDeclaration": 11744, "src": "5302:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "5292:23:57" }, "scope": 12122, "src": "5167:1603:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12061, "nodeType": "Block", "src": "7035:138:57", "statements": [ { "assignments": [ 12044, 12047 ], "declarations": [ { "constant": false, "id": 12044, "mutability": "mutable", "name": "recovered", "nameLocation": "7054:9:57", "nodeType": "VariableDeclaration", "scope": 12061, "src": "7046:17:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12043, "name": "address", "nodeType": "ElementaryTypeName", "src": "7046:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 12047, "mutability": "mutable", "name": "error", "nameLocation": "7078:5:57", "nodeType": "VariableDeclaration", "scope": 12061, "src": "7065:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 12046, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 12045, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 11744, "src": "7065:12:57" }, "referencedDeclaration": 11744, "src": "7065:12:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 12054, "initialValue": { "arguments": [ { "id": 12049, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12032, "src": "7098:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12050, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12034, "src": "7104:1:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 12051, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12036, "src": "7107:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12052, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12038, "src": "7110:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 12048, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 11844, 11918, 12029 ], "referencedDeclaration": 12029, "src": "7087:10:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 12053, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7087:25:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$11744_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "7045:67:57" }, { "expression": { "arguments": [ { "id": 12056, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12047, "src": "7134:5:57", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$11744", "typeString": "enum ECDSA.RecoverError" } ], "id": 12055, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11798, "src": "7122:11:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$11744_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 12057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7122:18:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12058, "nodeType": "ExpressionStatement", "src": "7122:18:57" }, { "expression": { "id": 12059, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12044, "src": "7157:9:57", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 12042, "id": 12060, "nodeType": "Return", "src": "7150:16:57" } ] }, "documentation": { "id": 12030, "nodeType": "StructuredDocumentation", "src": "6776:122:57", "text": " @dev Overload of {ECDSA-recover} that receives the `v`,\n `r` and `s` signature fields separately." }, "id": 12062, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "6912:7:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12039, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12032, "mutability": "mutable", "name": "hash", "nameLocation": "6937:4:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6929:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12031, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6929:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 12034, "mutability": "mutable", "name": "v", "nameLocation": "6957:1:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6951:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 12033, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "6951:5:57", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 12036, "mutability": "mutable", "name": "r", "nameLocation": "6976:1:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6968:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12035, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6968:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 12038, "mutability": "mutable", "name": "s", "nameLocation": "6995:1:57", "nodeType": "VariableDeclaration", "scope": 12062, "src": "6987:9:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12037, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6987:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "6919:83:57" }, "returnParameters": { "id": 12042, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12041, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12062, "src": "7026:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12040, "name": "address", "nodeType": "ElementaryTypeName", "src": "7026:7:57", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "7025:9:57" }, "scope": 12122, "src": "6903:270:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12078, "nodeType": "Block", "src": "7541:187:57", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a3332", "id": 12073, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7679:34:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, "value": "\u0019Ethereum Signed Message:\n32" }, { "id": 12074, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12065, "src": "7715:4:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 12071, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "7662:3:57", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12072, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "7662:16:57", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 12075, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7662:58:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 12070, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "7652:9:57", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 12076, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7652:69:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 12069, "id": 12077, "nodeType": "Return", "src": "7645:76:57" } ] }, "documentation": { "id": 12063, "nodeType": "StructuredDocumentation", "src": "7179:279:57", "text": " @dev Returns an Ethereum Signed Message, created from a `hash`. This\n produces hash corresponding to the one signed with the\n https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n JSON-RPC method as part of EIP-191.\n See {recover}." }, "id": 12079, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "nameLocation": "7472:22:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12066, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12065, "mutability": "mutable", "name": "hash", "nameLocation": "7503:4:57", "nodeType": "VariableDeclaration", "scope": 12079, "src": "7495:12:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12064, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7495:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "7494:14:57" }, "returnParameters": { "id": 12069, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12068, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12079, "src": "7532:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12067, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7532:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "7531:9:57" }, "scope": 12122, "src": "7463:265:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12100, "nodeType": "Block", "src": "8093:116:57", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a", "id": 12090, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8137:32:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_9af2d9c228f6cfddaa6d1e5b94e0bce4ab16bd9a472a2b7fbfd74ebff4c720b4", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a\"" }, "value": "\u0019Ethereum Signed Message:\n" }, { "arguments": [ { "expression": { "id": 12093, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12082, "src": "8188:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 12094, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "8188:8:57", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 12091, "name": "Strings", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11734, "src": "8171:7:57", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Strings_$11734_$", "typeString": "type(library Strings)" } }, "id": 12092, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "toString", "nodeType": "MemberAccess", "referencedDeclaration": 11596, "src": "8171:16:57", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$returns$_t_string_memory_ptr_$", "typeString": "function (uint256) pure returns (string memory)" } }, "id": 12095, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8171:26:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, { "id": 12096, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12082, "src": "8199:1:57", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_9af2d9c228f6cfddaa6d1e5b94e0bce4ab16bd9a472a2b7fbfd74ebff4c720b4", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a\"" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "id": 12088, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "8120:3:57", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12089, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "8120:16:57", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 12097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8120:81:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 12087, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "8110:9:57", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 12098, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8110:92:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 12086, "id": 12099, "nodeType": "Return", "src": "8103:99:57" } ] }, "documentation": { "id": 12080, "nodeType": "StructuredDocumentation", "src": "7734:274:57", "text": " @dev Returns an Ethereum Signed Message, created from `s`. This\n produces hash corresponding to the one signed with the\n https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n JSON-RPC method as part of EIP-191.\n See {recover}." }, "id": 12101, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "nameLocation": "8022:22:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12082, "mutability": "mutable", "name": "s", "nameLocation": "8058:1:57", "nodeType": "VariableDeclaration", "scope": 12101, "src": "8045:14:57", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 12081, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8045:5:57", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "8044:16:57" }, "returnParameters": { "id": 12086, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12085, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12101, "src": "8084:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12084, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8084:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8083:9:57" }, "scope": 12122, "src": "8013:196:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 12120, "nodeType": "Block", "src": "8650:92:57", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "1901", "id": 12114, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8694:10:57", "typeDescriptions": { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, "value": "\u0019\u0001" }, { "id": 12115, "name": "domainSeparator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12104, "src": "8706:15:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 12116, "name": "structHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12106, "src": "8723:10:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 12112, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "8677:3:57", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12113, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "8677:16:57", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 12117, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8677:57:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 12111, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "8667:9:57", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 12118, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8667:68:57", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 12110, "id": 12119, "nodeType": "Return", "src": "8660:75:57" } ] }, "documentation": { "id": 12102, "nodeType": "StructuredDocumentation", "src": "8215:328:57", "text": " @dev Returns an Ethereum Signed Typed Data, created from a\n `domainSeparator` and a `structHash`. This produces hash corresponding\n to the one signed with the\n https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n JSON-RPC method as part of EIP-712.\n See {recover}." }, "id": 12121, "implemented": true, "kind": "function", "modifiers": [], "name": "toTypedDataHash", "nameLocation": "8557:15:57", "nodeType": "FunctionDefinition", "parameters": { "id": 12107, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12104, "mutability": "mutable", "name": "domainSeparator", "nameLocation": "8581:15:57", "nodeType": "VariableDeclaration", "scope": 12121, "src": "8573:23:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12103, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8573:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 12106, "mutability": "mutable", "name": "structHash", "nameLocation": "8606:10:57", "nodeType": "VariableDeclaration", "scope": 12121, "src": "8598:18:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12105, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8598:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8572:45:57" }, "returnParameters": { "id": 12110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12109, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 12121, "src": "8641:7:57", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12108, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8641:7:57", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8640:9:57" }, "scope": 12122, "src": "8548:194:57", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 12123, "src": "369:8375:57", "usedErrors": [] } ], "src": "112:8633:57" }, "compiler": { "name": "solc", "version": "0.8.7+commit.e28d00a7.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.1.0", "updatedAt": "2023-03-16T16:54:15.280Z", "devdoc": { "details": "Elliptic Curve Digital Signature Algorithm (ECDSA) operations. These functions can be used to verify that a message was signed by the holder of the private keys of a given address.", "kind": "dev", "methods": {}, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }