{ "contractName": "Address", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.6.11+commit.5ef660b1\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Collection of functions related to the address type\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"openzeppelin-solidity/contracts/utils/Address.sol\":\"Address\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"openzeppelin-solidity/contracts/utils/Address.sol\":{\"keccak256\":\"0x934dbc549a8df514456047ad1c6ab257127a03f4109272834c30e596bbe10d1d\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://33cf247ade00a28c632dfe2c2521e1952f467c6081b89375c34b1eb297441d9b\",\"dweb:/ipfs/QmYGNAHCtN1m3QDynteTeVCfwFZBZRpGJNMjxwVBUifnfB\"]}},\"version\":1}", "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220f0ff336eb001927c37953e881a79a05a5b3c2e9266bef3d0aae892141900c0c264736f6c634300060b0033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220f0ff336eb001927c37953e881a79a05a5b3c2e9266bef3d0aae892141900c0c264736f6c634300060b0033", "immutableReferences": {}, "sourceMap": "126:2512:121:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "126:2512:121:-:0;;;;;;;;", "source": "// SPDX-License-Identifier: MIT\n\npragma 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-solidity/contracts/utils/Address.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/utils/Address.sol", "exportedSymbols": { "Address": [ 39509 ] }, "id": 39510, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 39447, "literals": [ "solidity", "^", "0.6", ".2" ], "nodeType": "PragmaDirective", "src": "33:23:121" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 39448, "nodeType": "StructuredDocumentation", "src": "58:67:121", "text": " @dev Collection of functions related to the address type" }, "fullyImplemented": true, "id": 39509, "linearizedBaseContracts": [ 39509 ], "name": "Address", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 39473, "nodeType": "Block", "src": "784:544:121", "statements": [ { "assignments": [ 39457 ], "declarations": [ { "constant": false, "id": 39457, "mutability": "mutable", "name": "codehash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39473, "src": "1036:16:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 39456, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1036:7:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 39458, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1036:16:121" }, { "assignments": [ 39460 ], "declarations": [ { "constant": false, "id": 39460, "mutability": "mutable", "name": "accountHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39473, "src": "1062:19:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 39459, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1062:7:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 39462, "initialValue": { "argumentTypes": null, "hexValue": "307863356432343630313836663732333363393237653764623264636337303363306535303062363533636138323237336237626661643830343564383561343730", "id": 39461, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1084:66:121", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_89477152217924674838424037953991966239322087453347756267410168184682657981552_by_1", "typeString": "int_const 8947...(69 digits omitted)...1552" }, "value": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470" }, "nodeType": "VariableDeclarationStatement", "src": "1062:88:121" }, { "AST": { "nodeType": "YulBlock", "src": "1225:36:121", "statements": [ { "nodeType": "YulAssignment", "src": "1227:32:121", "value": { "arguments": [ { "name": "account", "nodeType": "YulIdentifier", "src": "1251:7:121" } ], "functionName": { "name": "extcodehash", "nodeType": "YulIdentifier", "src": "1239:11:121" }, "nodeType": "YulFunctionCall", "src": "1239:20:121" }, "variableNames": [ { "name": "codehash", "nodeType": "YulIdentifier", "src": "1227:8:121" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 39451, "isOffset": false, "isSlot": false, "src": "1251:7:121", "valueSize": 1 }, { "declaration": 39457, "isOffset": false, "isSlot": false, "src": "1227:8:121", "valueSize": 1 } ], "id": 39463, "nodeType": "InlineAssembly", "src": "1216:45:121" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 39470, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 39466, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 39464, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39457, "src": "1278:8:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 39465, "name": "accountHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39460, "src": "1290:11:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "1278:23:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 39469, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 39467, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39457, "src": "1305:8:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "307830", "id": 39468, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1317:3:121", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0x0" }, "src": "1305:15:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1278:42:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 39471, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1277:44:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 39455, "id": 39472, "nodeType": "Return", "src": "1270:51:121" } ] }, "documentation": { "id": 39449, "nodeType": "StructuredDocumentation", "src": "148:565:121", "text": " @dev Returns true if `account` is a contract.\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 Among others, `isContract` will return false for the following\n types 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": 39474, "implemented": true, "kind": "function", "modifiers": [], "name": "isContract", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 39452, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 39451, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39474, "src": "738:15:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 39450, "name": "address", "nodeType": "ElementaryTypeName", "src": "738:7:121", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "737:17:121" }, "returnParameters": { "id": 39455, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 39454, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39474, "src": "778:4:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 39453, "name": "bool", "nodeType": "ElementaryTypeName", "src": "778:4:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "777:6:121" }, "scope": 39509, "src": "718:610:121", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 39507, "nodeType": "Block", "src": "2316:320:121", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 39489, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 39485, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "2342:4:121", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$39509", "typeString": "library Address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Address_$39509", "typeString": "library Address" } ], "id": 39484, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2334:7:121", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 39483, "name": "address", "nodeType": "ElementaryTypeName", "src": "2334:7:121", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 39486, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2334:13:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 39487, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balance", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2334:21:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 39488, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39479, "src": "2359:6:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2334:31:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20696e73756666696369656e742062616c616e6365", "id": 39490, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2367:31:121", "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": 39482, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2326:7:121", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 39491, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2326:73:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 39492, "nodeType": "ExpressionStatement", "src": "2326:73:121" }, { "assignments": [ 39494, null ], "declarations": [ { "constant": false, "id": 39494, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39507, "src": "2488:12:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 39493, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2488:4:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, null ], "id": 39501, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "", "id": 39499, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2538:2:121", "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": 39495, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39477, "src": "2506:9:121", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "id": 39496, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2506:14:121", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 39498, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "names": [ "value" ], "nodeType": "FunctionCallOptions", "options": [ { "argumentTypes": null, "id": 39497, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39479, "src": "2529:6:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "src": "2506:31:121", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 39500, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2506:35:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "2487:54:121" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 39503, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39494, "src": "2559:7:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20756e61626c6520746f2073656e642076616c75652c20726563697069656e74206d61792068617665207265766572746564", "id": 39504, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2568:60:121", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" }, "value": "Address: unable to send value, recipient may have reverted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" } ], "id": 39502, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2551:7:121", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 39505, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2551:78:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 39506, "nodeType": "ExpressionStatement", "src": "2551:78:121" } ] }, "documentation": { "id": 39475, "nodeType": "StructuredDocumentation", "src": "1334:906:121", "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\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 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\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]." }, "id": 39508, "implemented": true, "kind": "function", "modifiers": [], "name": "sendValue", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 39480, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 39477, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39508, "src": "2264:25:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 39476, "name": "address", "nodeType": "ElementaryTypeName", "src": "2264:15:121", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 39479, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39508, "src": "2291:14:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 39478, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2291:7:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2263:43:121" }, "returnParameters": { "id": 39481, "nodeType": "ParameterList", "parameters": [], "src": "2316:0:121" }, "scope": 39509, "src": "2245:391:121", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" } ], "scope": 39510, "src": "126:2512:121" } ], "src": "33:2606:121" }, "legacyAST": { "absolutePath": "openzeppelin-solidity/contracts/utils/Address.sol", "exportedSymbols": { "Address": [ 39509 ] }, "id": 39510, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 39447, "literals": [ "solidity", "^", "0.6", ".2" ], "nodeType": "PragmaDirective", "src": "33:23:121" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 39448, "nodeType": "StructuredDocumentation", "src": "58:67:121", "text": " @dev Collection of functions related to the address type" }, "fullyImplemented": true, "id": 39509, "linearizedBaseContracts": [ 39509 ], "name": "Address", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 39473, "nodeType": "Block", "src": "784:544:121", "statements": [ { "assignments": [ 39457 ], "declarations": [ { "constant": false, "id": 39457, "mutability": "mutable", "name": "codehash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39473, "src": "1036:16:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 39456, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1036:7:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 39458, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1036:16:121" }, { "assignments": [ 39460 ], "declarations": [ { "constant": false, "id": 39460, "mutability": "mutable", "name": "accountHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39473, "src": "1062:19:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 39459, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1062:7:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 39462, "initialValue": { "argumentTypes": null, "hexValue": "307863356432343630313836663732333363393237653764623264636337303363306535303062363533636138323237336237626661643830343564383561343730", "id": 39461, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1084:66:121", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_89477152217924674838424037953991966239322087453347756267410168184682657981552_by_1", "typeString": "int_const 8947...(69 digits omitted)...1552" }, "value": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470" }, "nodeType": "VariableDeclarationStatement", "src": "1062:88:121" }, { "AST": { "nodeType": "YulBlock", "src": "1225:36:121", "statements": [ { "nodeType": "YulAssignment", "src": "1227:32:121", "value": { "arguments": [ { "name": "account", "nodeType": "YulIdentifier", "src": "1251:7:121" } ], "functionName": { "name": "extcodehash", "nodeType": "YulIdentifier", "src": "1239:11:121" }, "nodeType": "YulFunctionCall", "src": "1239:20:121" }, "variableNames": [ { "name": "codehash", "nodeType": "YulIdentifier", "src": "1227:8:121" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 39451, "isOffset": false, "isSlot": false, "src": "1251:7:121", "valueSize": 1 }, { "declaration": 39457, "isOffset": false, "isSlot": false, "src": "1227:8:121", "valueSize": 1 } ], "id": 39463, "nodeType": "InlineAssembly", "src": "1216:45:121" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 39470, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 39466, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 39464, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39457, "src": "1278:8:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 39465, "name": "accountHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39460, "src": "1290:11:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "1278:23:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 39469, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 39467, "name": "codehash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39457, "src": "1305:8:121", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "307830", "id": 39468, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1317:3:121", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0x0" }, "src": "1305:15:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1278:42:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 39471, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1277:44:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 39455, "id": 39472, "nodeType": "Return", "src": "1270:51:121" } ] }, "documentation": { "id": 39449, "nodeType": "StructuredDocumentation", "src": "148:565:121", "text": " @dev Returns true if `account` is a contract.\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 Among others, `isContract` will return false for the following\n types 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": 39474, "implemented": true, "kind": "function", "modifiers": [], "name": "isContract", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 39452, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 39451, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39474, "src": "738:15:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 39450, "name": "address", "nodeType": "ElementaryTypeName", "src": "738:7:121", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "737:17:121" }, "returnParameters": { "id": 39455, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 39454, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39474, "src": "778:4:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 39453, "name": "bool", "nodeType": "ElementaryTypeName", "src": "778:4:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "777:6:121" }, "scope": 39509, "src": "718:610:121", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 39507, "nodeType": "Block", "src": "2316:320:121", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 39489, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 39485, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "2342:4:121", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$39509", "typeString": "library Address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Address_$39509", "typeString": "library Address" } ], "id": 39484, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2334:7:121", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 39483, "name": "address", "nodeType": "ElementaryTypeName", "src": "2334:7:121", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 39486, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2334:13:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 39487, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balance", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2334:21:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 39488, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39479, "src": "2359:6:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2334:31:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20696e73756666696369656e742062616c616e6365", "id": 39490, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2367:31:121", "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": 39482, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2326:7:121", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 39491, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2326:73:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 39492, "nodeType": "ExpressionStatement", "src": "2326:73:121" }, { "assignments": [ 39494, null ], "declarations": [ { "constant": false, "id": 39494, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39507, "src": "2488:12:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 39493, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2488:4:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, null ], "id": 39501, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "", "id": 39499, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2538:2:121", "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": 39495, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39477, "src": "2506:9:121", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "id": 39496, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2506:14:121", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 39498, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "names": [ "value" ], "nodeType": "FunctionCallOptions", "options": [ { "argumentTypes": null, "id": 39497, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39479, "src": "2529:6:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "src": "2506:31:121", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 39500, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2506:35:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "2487:54:121" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 39503, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 39494, "src": "2559:7:121", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "416464726573733a20756e61626c6520746f2073656e642076616c75652c20726563697069656e74206d61792068617665207265766572746564", "id": 39504, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2568:60:121", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" }, "value": "Address: unable to send value, recipient may have reverted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" } ], "id": 39502, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2551:7:121", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 39505, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2551:78:121", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 39506, "nodeType": "ExpressionStatement", "src": "2551:78:121" } ] }, "documentation": { "id": 39475, "nodeType": "StructuredDocumentation", "src": "1334:906:121", "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\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 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\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]." }, "id": 39508, "implemented": true, "kind": "function", "modifiers": [], "name": "sendValue", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 39480, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 39477, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39508, "src": "2264:25:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 39476, "name": "address", "nodeType": "ElementaryTypeName", "src": "2264:15:121", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 39479, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 39508, "src": "2291:14:121", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 39478, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2291:7:121", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2263:43:121" }, "returnParameters": { "id": 39481, "nodeType": "ParameterList", "parameters": [], "src": "2316:0:121" }, "scope": 39509, "src": "2245:391:121", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" } ], "scope": 39510, "src": "126:2512:121" } ], "src": "33:2606:121" }, "compiler": { "name": "solc", "version": "0.6.11+commit.5ef660b1.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.2.0", "updatedAt": "2020-08-12T09:47:18.531Z", "devdoc": { "details": "Collection of functions related to the address type", "kind": "dev", "methods": {}, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }