{ "contractName": "Address", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.6.6+commit.6c089d02\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Collection of functions related to the address type\",\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/utils/Address.sol\":\"Address\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/utils/Address.sol\":{\"keccak256\":\"0x5f7da58ee3d9faa9b8999a93d49c8ff978f1afc88ae9bcfc6f9cbb44da011c2b\",\"urls\":[\"bzz-raw://4f089d954b3ecaa26949412fe63e9a184b056562c6c13dd4a0529a5d9a2e685a\",\"dweb:/ipfs/QmVK5iCNAMcEJQxT59bsC5E53JQASDQPU6khHox3d5ZXCn\"]}},\"version\":1}", "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220e65de85ca8df4b11293f2d8330dbb5af6406685bc9a084a9209e0e4597539f5464736f6c63430006060033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220e65de85ca8df4b11293f2d8330dbb5af6406685bc9a084a9209e0e4597539f5464736f6c63430006060033", "immutableReferences": {}, "sourceMap": "93:2512:76:-:0;;132:2:-1;166:7;155:9;146:7;137:37;255:7;249:14;246:1;241:23;235:4;232:33;222:2;;269:9;222:2;293:9;290:1;283:20;323:4;314:7;306:22;347:7;338;331:24", "deployedSourceMap": "93:2512:76:-:0;;;;;;12:1:-1;9;2:12", "source": "pragma solidity ^0.6.2;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n // for accounts without code, i.e. `keccak256('')`\n bytes32 codehash;\n bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n // solhint-disable-next-line no-inline-assembly\n assembly { codehash := extcodehash(account) }\n return (codehash != accountHash && codehash != 0x0);\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n (bool success, ) = recipient.call{ value: amount }(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n}\n", "sourcePath": "@openzeppelin/contracts/utils/Address.sol", "ast": { "absolutePath": "@openzeppelin/contracts/utils/Address.sol", "exportedSymbols": { "Address": [ 12393 ] }, "id": 12394, "nodeType": "SourceUnit", "nodes": [ { "id": 12331, "literals": [ "solidity", "^", "0.6", ".2" ], "nodeType": "PragmaDirective", "src": "0:23:76" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 12332, "nodeType": "StructuredDocumentation", "src": "25:67:76", "text": "@dev Collection of functions related to the address type" }, "fullyImplemented": true, "id": 12393, "linearizedBaseContracts": [ 12393 ], "name": "Address", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 12357, "nodeType": "Block", "src": "751:544:76", "statements": [ { "assignments": [ 12341 ], "declarations": [ { "constant": false, "id": 12341, "mutability": "mutable", "name": "codehash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12357, "src": "1003:16:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12340, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1003:7:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 12342, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1003:16:76" }, { "assignments": [ 12344 ], "declarations": [ { "constant": false, "id": 12344, "mutability": "mutable", "name": "accountHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12357, "src": "1029:19:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12343, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1029:7:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 12346, "initialValue": { "argumentTypes": null, "hexValue": "307863356432343630313836663732333363393237653764623264636337303363306535303062363533636138323237336237626661643830343564383561343730", "id": 12345, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1051:66:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_89477152217924674838424037953991966239322087453347756267410168184682657981552_by_1", "typeString": "int_const 8947...(69 digits omitted)...1552" }, "value": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470" }, "nodeType": "VariableDeclarationStatement", "src": "1029:88:76" }, { "AST": { "nodeType": "YulBlock", "src": "1192:36:76", "statements": [ { "nodeType": "YulAssignment", "src": "1194:32:76", "value": { "arguments": [ { "name": "account", "nodeType": "YulIdentifier", "src": "1218:7:76" } ], "functionName": { "name": "extcodehash", "nodeType": "YulIdentifier", "src": "1206:11:76" }, "nodeType": "YulFunctionCall", "src": "1206:20:76" }, "variableNames": [ { "name": "codehash", "nodeType": "YulIdentifier", "src": "1194:8:76" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 12335, "isOffset": false, "isSlot": false, "src": "1218:7:76", "valueSize": 1 }, { "declaration": 12341, "isOffset": false, "isSlot": false, "src": "1194:8:76", "valueSize": 1 } ], "id": 12347, "nodeType": "InlineAssembly", "src": "1183:45:76" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 12354, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 12350, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 12348, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12341, "src": "1245:8:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 12349, "name": "accountHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12344, "src": "1257:11:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "1245:23:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 12353, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 12351, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12341, "src": "1272:8:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "307830", "id": 12352, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1284:3:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0x0" }, "src": "1272:15:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1245:42:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 12355, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1244:44:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 12339, "id": 12356, "nodeType": "Return", "src": "1237:51:76" } ] }, "documentation": { "id": 12333, "nodeType": "StructuredDocumentation", "src": "115:565:76", "text": "@dev Returns true if `account` is a contract.\n * [IMPORTANT]\n====\nIt is unsafe to assume that an address for which this function returns\nfalse is an externally-owned account (EOA) and not a contract.\n * Among others, `isContract` will return false for the following\ntypes of addresses:\n * - an externally-owned account\n - a contract in construction\n - an address where a contract will be created\n - an address where a contract lived, but was destroyed\n====" }, "id": 12358, "implemented": true, "kind": "function", "modifiers": [], "name": "isContract", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12336, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12335, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12358, "src": "705:15:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12334, "name": "address", "nodeType": "ElementaryTypeName", "src": "705:7:76", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "704:17:76" }, "returnParameters": { "id": 12339, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12338, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12358, "src": "745:4:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12337, "name": "bool", "nodeType": "ElementaryTypeName", "src": "745:4:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "744:6:76" }, "scope": 12393, "src": "685:610:76", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 12391, "nodeType": "Block", "src": "2283:320:76", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 12373, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12369, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "2309:4:76", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$12393", "typeString": "library Address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Address_$12393", "typeString": "library Address" } ], "id": 12368, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2301:7:76", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 12367, "name": "address", "nodeType": "ElementaryTypeName", "src": "2301:7:76", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 12370, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2301:13:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12371, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balance", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2301:21:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 12372, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12363, "src": "2326:6:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2301:31:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20696e73756666696369656e742062616c616e6365", "id": 12374, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2334:31:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_5597a22abd0ef5332f8053862eb236db7590f17e2b93a53f63a103becfb561f9", "typeString": "literal_string \"Address: insufficient balance\"" }, "value": "Address: insufficient balance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_5597a22abd0ef5332f8053862eb236db7590f17e2b93a53f63a103becfb561f9", "typeString": "literal_string \"Address: insufficient balance\"" } ], "id": 12366, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2293:7:76", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 12375, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2293:73:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12376, "nodeType": "ExpressionStatement", "src": "2293:73:76" }, { "assignments": [ 12378, null ], "declarations": [ { "constant": false, "id": 12378, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12391, "src": "2455:12:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12377, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2455:4:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, null ], "id": 12385, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "", "id": 12383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2505:2:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 12379, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12361, "src": "2473:9:76", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "id": 12380, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2473:14:76", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 12382, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "names": [ "value" ], "nodeType": "FunctionCallOptions", "options": [ { "argumentTypes": null, "id": 12381, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12363, "src": "2496:6:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "src": "2473:31:76", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 12384, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2473:35:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "2454:54:76" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12387, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12378, "src": "2526:7:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": 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"referencedDeclaration": -18, "src": "2518:7:76", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 12389, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2518:78:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12390, "nodeType": "ExpressionStatement", "src": "2518:78:76" } ] }, "documentation": { "id": 12359, "nodeType": "StructuredDocumentation", "src": "1301:906:76", "text": "@dev Replacement for Solidity's `transfer`: sends `amount` wei to\n`recipient`, forwarding all available gas and reverting on errors.\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\nof certain opcodes, possibly making contracts go over the 2300 gas limit\nimposed by `transfer`, making them unable to receive funds via\n`transfer`. {sendValue} removes this limitation.\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n * IMPORTANT: because control is transferred to `recipient`, care must be\ntaken to not create reentrancy vulnerabilities. Consider using\n{ReentrancyGuard} or the\nhttps://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]." }, "id": 12392, "implemented": true, "kind": "function", "modifiers": [], "name": "sendValue", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12364, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12361, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12392, "src": "2231:25:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 12360, "name": "address", "nodeType": "ElementaryTypeName", "src": "2231:15:76", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12363, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12392, "src": "2258:14:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12362, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2258:7:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2230:43:76" }, "returnParameters": { "id": 12365, "nodeType": "ParameterList", "parameters": [], "src": "2283:0:76" }, "scope": 12393, "src": "2212:391:76", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" } ], "scope": 12394, "src": "93:2512:76" } ], "src": "0:2606:76" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/utils/Address.sol", "exportedSymbols": { "Address": [ 12393 ] }, "id": 12394, "nodeType": "SourceUnit", "nodes": [ { "id": 12331, "literals": [ "solidity", "^", "0.6", ".2" ], "nodeType": "PragmaDirective", "src": "0:23:76" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 12332, "nodeType": "StructuredDocumentation", "src": "25:67:76", "text": "@dev Collection of functions related to the address type" }, "fullyImplemented": true, "id": 12393, "linearizedBaseContracts": [ 12393 ], "name": "Address", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 12357, "nodeType": "Block", "src": "751:544:76", "statements": [ { "assignments": [ 12341 ], "declarations": [ { "constant": false, "id": 12341, "mutability": "mutable", "name": "codehash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12357, "src": "1003:16:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12340, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1003:7:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 12342, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1003:16:76" }, { "assignments": [ 12344 ], "declarations": [ { "constant": false, "id": 12344, "mutability": "mutable", "name": "accountHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12357, "src": "1029:19:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12343, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1029:7:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 12346, "initialValue": { "argumentTypes": null, "hexValue": "307863356432343630313836663732333363393237653764623264636337303363306535303062363533636138323237336237626661643830343564383561343730", "id": 12345, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1051:66:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_89477152217924674838424037953991966239322087453347756267410168184682657981552_by_1", "typeString": "int_const 8947...(69 digits omitted)...1552" }, "value": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470" }, "nodeType": "VariableDeclarationStatement", "src": "1029:88:76" }, { "AST": { "nodeType": "YulBlock", "src": "1192:36:76", "statements": [ { "nodeType": "YulAssignment", "src": "1194:32:76", "value": { "arguments": [ { "name": "account", "nodeType": "YulIdentifier", "src": "1218:7:76" } ], "functionName": { "name": "extcodehash", "nodeType": "YulIdentifier", "src": "1206:11:76" }, "nodeType": "YulFunctionCall", "src": "1206:20:76" }, "variableNames": [ { "name": "codehash", "nodeType": "YulIdentifier", "src": "1194:8:76" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 12335, "isOffset": false, "isSlot": false, "src": "1218:7:76", "valueSize": 1 }, { "declaration": 12341, "isOffset": false, "isSlot": false, "src": "1194:8:76", "valueSize": 1 } ], "id": 12347, "nodeType": "InlineAssembly", "src": "1183:45:76" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 12354, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 12350, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 12348, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12341, "src": "1245:8:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 12349, "name": "accountHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12344, "src": "1257:11:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "1245:23:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 12353, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 12351, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12341, "src": "1272:8:76", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "307830", "id": 12352, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1284:3:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0x0" }, "src": "1272:15:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1245:42:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 12355, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1244:44:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 12339, "id": 12356, "nodeType": "Return", "src": "1237:51:76" } ] }, "documentation": { "id": 12333, "nodeType": "StructuredDocumentation", "src": "115:565:76", "text": "@dev Returns true if `account` is a contract.\n * [IMPORTANT]\n====\nIt is unsafe to assume that an address for which this function returns\nfalse is an externally-owned account (EOA) and not a contract.\n * Among others, `isContract` will return false for the following\ntypes of addresses:\n * - an externally-owned account\n - a contract in construction\n - an address where a contract will be created\n - an address where a contract lived, but was destroyed\n====" }, "id": 12358, "implemented": true, "kind": "function", "modifiers": [], "name": "isContract", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12336, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12335, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12358, "src": "705:15:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12334, "name": "address", "nodeType": "ElementaryTypeName", "src": "705:7:76", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "704:17:76" }, "returnParameters": { "id": 12339, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12338, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12358, "src": "745:4:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12337, "name": "bool", "nodeType": "ElementaryTypeName", "src": "745:4:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "744:6:76" }, "scope": 12393, "src": "685:610:76", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 12391, "nodeType": "Block", "src": "2283:320:76", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 12373, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12369, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "2309:4:76", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$12393", "typeString": "library Address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Address_$12393", "typeString": "library Address" } ], "id": 12368, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2301:7:76", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 12367, "name": "address", "nodeType": "ElementaryTypeName", "src": "2301:7:76", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 12370, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2301:13:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12371, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balance", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2301:21:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 12372, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12363, "src": "2326:6:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2301:31:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20696e73756666696369656e742062616c616e6365", "id": 12374, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2334:31:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_5597a22abd0ef5332f8053862eb236db7590f17e2b93a53f63a103becfb561f9", "typeString": "literal_string \"Address: insufficient balance\"" }, "value": "Address: insufficient balance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_5597a22abd0ef5332f8053862eb236db7590f17e2b93a53f63a103becfb561f9", "typeString": "literal_string \"Address: insufficient balance\"" } ], "id": 12366, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2293:7:76", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 12375, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2293:73:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12376, "nodeType": "ExpressionStatement", "src": "2293:73:76" }, { "assignments": [ 12378, null ], "declarations": [ { "constant": false, "id": 12378, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12391, "src": "2455:12:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12377, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2455:4:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, null ], "id": 12385, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "", "id": 12383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2505:2:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 12379, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12361, "src": "2473:9:76", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "id": 12380, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2473:14:76", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 12382, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "names": [ "value" ], "nodeType": "FunctionCallOptions", "options": [ { "argumentTypes": null, "id": 12381, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12363, "src": "2496:6:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "src": "2473:31:76", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 12384, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2473:35:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "2454:54:76" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12387, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12378, "src": "2526:7:76", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20756e61626c6520746f2073656e642076616c75652c20726563697069656e74206d61792068617665207265766572746564", "id": 12388, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2535:60:76", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" }, "value": "Address: unable to send value, recipient may have reverted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" } ], "id": 12386, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2518:7:76", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 12389, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2518:78:76", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12390, "nodeType": "ExpressionStatement", "src": "2518:78:76" } ] }, "documentation": { "id": 12359, "nodeType": "StructuredDocumentation", "src": "1301:906:76", "text": "@dev Replacement for Solidity's `transfer`: sends `amount` wei to\n`recipient`, forwarding all available gas and reverting on errors.\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\nof certain opcodes, possibly making contracts go over the 2300 gas limit\nimposed by `transfer`, making them unable to receive funds via\n`transfer`. {sendValue} removes this limitation.\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n * IMPORTANT: because control is transferred to `recipient`, care must be\ntaken to not create reentrancy vulnerabilities. Consider using\n{ReentrancyGuard} or the\nhttps://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]." }, "id": 12392, "implemented": true, "kind": "function", "modifiers": [], "name": "sendValue", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12364, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12361, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12392, "src": "2231:25:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 12360, "name": "address", "nodeType": "ElementaryTypeName", "src": "2231:15:76", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12363, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12392, "src": "2258:14:76", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12362, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2258:7:76", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2230:43:76" }, "returnParameters": { "id": 12365, "nodeType": "ParameterList", "parameters": [], "src": "2283:0:76" }, "scope": 12393, "src": "2212:391:76", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" } ], "scope": 12394, "src": "93:2512:76" } ], "src": "0:2606:76" }, "compiler": { "name": "solc", "version": "0.6.6+commit.6c089d02.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.1.0", "updatedAt": "2020-04-21T18:10:34.972Z", "devdoc": { "details": "Collection of functions related to the address type", "methods": {} }, "userdoc": { "methods": {} } }