{ "contractName": "ReentrancyGuard", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.4.24+commit.e67f0147\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"@aragon/os/contracts/common/ReentrancyGuard.sol\":\"ReentrancyGuard\"},\"evmVersion\":\"byzantium\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":10000},\"remappings\":[]},\"sources\":{\"@aragon/os/contracts/common/ReentrancyGuard.sol\":{\"keccak256\":\"0x2b2014de57620aedded6365e742e17b9a23492d754e48dfeefa56f7e5bcf5645\",\"urls\":[\"bzzr://1aa2b79808ccb14b6c2d68f9283bd40300877c749b44edf0f66d78f0c1d17708\"]},\"@aragon/os/contracts/common/UnstructuredStorage.sol\":{\"keccak256\":\"0xe0d627fc7a7716409389f34cfe49366ba7871309d3a73262ec9608ef73e47591\",\"urls\":[\"bzzr://9742204494402cdecc66b266f0e420fcfe2677ba710db7651c40f96a63940bef\"]}},\"version\":1}", "bytecode": "0x6080604052348015600f57600080fd5b50603580601d6000396000f3006080604052600080fd00a165627a7a723058207bf6597c251fe5e280cb4ecb7a41339597de1cbfc1fe51470c3bc0a351d9990a0029", "deployedBytecode": "0x6080604052600080fd00a165627a7a723058207bf6597c251fe5e280cb4ecb7a41339597de1cbfc1fe51470c3bc0a351d9990a0029", "sourceMap": "116:821:33:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;116:821:33;;;;;;;", "deployedSourceMap": "116:821:33:-;;;;;", "source": "/*\n * SPDX-License-Identitifer: MIT\n */\n\npragma solidity ^0.4.24;\n\nimport \"../common/UnstructuredStorage.sol\";\n\n\ncontract ReentrancyGuard {\n using UnstructuredStorage for bytes32;\n\n /* Hardcoded constants to save gas\n bytes32 internal constant REENTRANCY_MUTEX_POSITION = keccak256(\"aragonOS.reentrancyGuard.mutex\");\n */\n bytes32 private constant REENTRANCY_MUTEX_POSITION = 0xe855346402235fdd185c890e68d2c4ecad599b88587635ee285bce2fda58dacb;\n\n string private constant ERROR_REENTRANT = \"REENTRANCY_REENTRANT_CALL\";\n\n modifier nonReentrant() {\n // Ensure mutex is unlocked\n require(!REENTRANCY_MUTEX_POSITION.getStorageBool(), ERROR_REENTRANT);\n\n // Lock mutex before function call\n REENTRANCY_MUTEX_POSITION.setStorageBool(true);\n\n // Perform function call\n _;\n\n // Unlock mutex after function call\n REENTRANCY_MUTEX_POSITION.setStorageBool(false);\n }\n}\n", "sourcePath": "@aragon/os/contracts/common/ReentrancyGuard.sol", "ast": { "absolutePath": "@aragon/os/contracts/common/ReentrancyGuard.sol", "exportedSymbols": { "ReentrancyGuard": [ 6539 ] }, "id": 6540, "nodeType": "SourceUnit", "nodes": [ { "id": 6504, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "44:24:33" }, { "absolutePath": "@aragon/os/contracts/common/UnstructuredStorage.sol", "file": "../common/UnstructuredStorage.sol", "id": 6505, "nodeType": "ImportDirective", "scope": 6540, "sourceUnit": 6938, "src": "70:43:33", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [], 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"typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 6509, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "340:7:33", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": { "argumentTypes": null, "hexValue": "307865383535333436343032323335666464313835633839306536386432633465636164353939623838353837363335656532383562636532666461353864616362", "id": 6510, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "393:66:33", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_105087124458853841390171415992387591928788234697064850153887443616718040652491_by_1", "typeString": "int_const 1050...(70 digits omitted)...2491" }, "value": "0xe855346402235fdd185c890e68d2c4ecad599b88587635ee285bce2fda58dacb" }, "visibility": "private" }, { "constant": true, "id": 6514, "name": "ERROR_REENTRANT", "nodeType": "VariableDeclaration", "scope": 6539, "src": "466:69:33", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_memory", "typeString": "string" }, "typeName": { "id": 6512, "name": "string", "nodeType": "ElementaryTypeName", "src": "466:6:33", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": { "argumentTypes": null, "hexValue": "5245454e5452414e43595f5245454e5452414e545f43414c4c", "id": 6513, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "508:27:33", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_93b2455b3a825682ce89cca764505383e472c2457989cfc22050e4efb70a0da3", "typeString": "literal_string \"REENTRANCY_REENTRANT_CALL\"" }, "value": "REENTRANCY_REENTRANT_CALL" }, "visibility": "private" }, { "body": { "id": 6537, "nodeType": "Block", "src": "566:369:33", "statements": 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