{ "fileName": "ReentrancyGuard.sol", "contractName": "ReentrancyGuardUpgradeSafe", "source": "pragma solidity ^0.6.0;\nimport \"../Initializable.sol\";\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\ncontract ReentrancyGuardUpgradeSafe is Initializable {\n bool private _notEntered;\n\n\n function __ReentrancyGuard_init() internal initializer {\n __ReentrancyGuard_init_unchained();\n }\n\n function __ReentrancyGuard_init_unchained() internal initializer {\n\n\n // Storing an initial non-zero value makes deployment a bit more\n // expensive, but in exchange the refund on every call to nonReentrant\n // will be lower in amount. Since refunds are capped to a percetange of\n // the total transaction's gas, it is best to keep them low in cases\n // like this one, to increase the likelihood of the full refund coming\n // into effect.\n _notEntered = true;\n\n }\n\n\n /**\n * @dev Prevents a contract from calling itself, directly or indirectly.\n * Calling a `nonReentrant` function from another `nonReentrant`\n * function is not supported. It is possible to prevent this from happening\n * by making the `nonReentrant` function external, and make it call a\n * `private` function that does the actual work.\n */\n modifier nonReentrant() {\n // On the first call to nonReentrant, _notEntered will be true\n require(_notEntered, \"ReentrancyGuard: reentrant call\");\n\n // Any calls to nonReentrant after this point will fail\n _notEntered = false;\n\n _;\n\n // By storing the original value once again, a refund is triggered (see\n // https://eips.ethereum.org/EIPS/eip-2200)\n _notEntered = true;\n }\n\n uint256[49] private __gap;\n}\n", "sourcePath": "contracts/utils/ReentrancyGuard.sol", "sourceMap": "807:1562:105:-:0;;;;5:9:-1;2:2;;;27:1;24;17:12;2:2;807:1562:105;;;;;;;", "deployedSourceMap": "807:1562:105:-:0;;;12:1:-1;9;2:12", "abi": [], "ast": { "absolutePath": "contracts/utils/ReentrancyGuard.sol", "exportedSymbols": { "ReentrancyGuardUpgradeSafe": [ 15193 ] }, "id": 15194, "nodeType": "SourceUnit", "nodes": [ { "id": 15145, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:105" }, { "absolutePath": "contracts/Initializable.sol", "file": "../Initializable.sol", "id": 15146, "nodeType": "ImportDirective", "scope": 15194, "sourceUnit": 1408, "src": "24:30:105", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 15148, "name": "Initializable", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1407, "src": "846:13:105", "typeDescriptions": { "typeIdentifier": "t_contract$_Initializable_$1407", "typeString": "contract Initializable" } }, "id": 15149, "nodeType": "InheritanceSpecifier", "src": "846:13:105" } ], "contractDependencies": [ 1407 ], "contractKind": "contract", "documentation": { "id": 15147, "nodeType": "StructuredDocumentation", "src": "56:750:105", "text": "@dev Contract module that helps prevent reentrant calls to a function.\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\navailable, which can be applied to functions to make sure there are no nested\n(reentrant) calls to them.\n * Note that because there is a single `nonReentrant` guard, functions marked as\n`nonReentrant` may not call one another. This can be worked around by making\nthose functions `private`, and then adding `external` `nonReentrant` entry\npoints to them.\n * TIP: If you would like to learn more about reentrancy and alternative ways\nto protect against it, check out our blog post\nhttps://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]." }, "fullyImplemented": true, "id": 15193, "linearizedBaseContracts": [ 15193, 1407 ], "name": "ReentrancyGuardUpgradeSafe", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 15151, "mutability": "mutable", "name": "_notEntered", "nodeType": "VariableDeclaration", "overrides": null, "scope": 15193, "src": "866:24:105", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 15150, "name": "bool", "nodeType": "ElementaryTypeName", "src": "866:4:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "private" }, { "body": { "id": 15159, "nodeType": "Block", "src": "953:51:105", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 15156, "name": "__ReentrancyGuard_init_unchained", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15170, "src": "963:32:105", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 15157, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "963:34:105", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 15158, "nodeType": "ExpressionStatement", "src": "963:34:105" } ] }, "documentation": null, "id": 15160, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 15154, "modifierName": { "argumentTypes": null, "id": 15153, "name": "initializer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1380, "src": "941:11:105", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "941:11:105" } ], "name": "__ReentrancyGuard_init", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 15152, "nodeType": "ParameterList", "parameters": [], "src": "929:2:105" }, "returnParameters": { "id": 15155, "nodeType": "ParameterList", "parameters": [], "src": "953:0:105" }, "scope": 15193, "src": "898:106:105", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 15169, "nodeType": "Block", "src": "1075:450:105", "statements": [ { "expression": { "argumentTypes": null, "id": 15167, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 15165, "name": "_notEntered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15151, "src": "1499:11:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "74727565", "id": 15166, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1513:4:105", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "1499:18:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 15168, "nodeType": "ExpressionStatement", "src": "1499:18:105" } ] }, "documentation": null, "id": 15170, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 15163, "modifierName": { "argumentTypes": null, "id": 15162, "name": "initializer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1380, "src": "1063:11:105", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "1063:11:105" } ], "name": "__ReentrancyGuard_init_unchained", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 15161, "nodeType": "ParameterList", "parameters": [], "src": "1051:2:105" }, "returnParameters": { "id": 15164, "nodeType": "ParameterList", "parameters": [], "src": "1075:0:105" }, "scope": 15193, "src": "1010:515:105", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 15187, "nodeType": "Block", "src": "1925:410:105", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 15174, "name": "_notEntered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15151, "src": "2014:11:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "5265656e7472616e637947756172643a207265656e7472616e742063616c6c", "id": 15175, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2027:33:105", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_ebf73bba305590e4764d5cb53b69bffd6d4d092d1a67551cb346f8cfcdab8619", "typeString": "literal_string \"ReentrancyGuard: reentrant call\"" }, "value": "ReentrancyGuard: reentrant call" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_ebf73bba305590e4764d5cb53b69bffd6d4d092d1a67551cb346f8cfcdab8619", "typeString": "literal_string \"ReentrancyGuard: reentrant call\"" } ], "id": 15173, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2006:7:105", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 15176, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2006:55:105", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 15177, "nodeType": "ExpressionStatement", "src": "2006:55:105" }, { "expression": { "argumentTypes": null, "id": 15180, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 15178, "name": "_notEntered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15151, "src": "2136:11:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "66616c7365", "id": 15179, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "2150:5:105", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "src": "2136:19:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 15181, "nodeType": "ExpressionStatement", "src": "2136:19:105" }, { "id": 15182, "nodeType": "PlaceholderStatement", "src": "2166:1:105" }, { "expression": { "argumentTypes": null, "id": 15185, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 15183, "name": "_notEntered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 15151, "src": "2310:11:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "74727565", "id": 15184, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "2324:4:105", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "2310:18:105", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 15186, "nodeType": "ExpressionStatement", "src": "2310:18:105" } ] }, "documentation": { "id": 15171, "nodeType": "StructuredDocumentation", "src": "1532:364:105", "text": "@dev Prevents a contract from calling itself, directly or indirectly.\nCalling a `nonReentrant` function from another `nonReentrant`\nfunction is not supported. It is possible to prevent this from happening\nby making the `nonReentrant` function external, and make it call a\n`private` function that does the actual work." }, "id": 15188, "name": "nonReentrant", "nodeType": "ModifierDefinition", "overrides": null, "parameters": { "id": 15172, "nodeType": "ParameterList", "parameters": [], "src": "1922:2:105" }, "src": "1901:434:105", "virtual": false, "visibility": "internal" }, { "constant": false, "id": 15192, "mutability": "mutable", "name": "__gap", "nodeType": "VariableDeclaration", "overrides": null, "scope": 15193, "src": "2341:25:105", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$49_storage", "typeString": "uint256[49]" }, "typeName": { "baseType": { "id": 15189, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2341:7:105", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 15191, "length": { "argumentTypes": null, "hexValue": "3439", "id": 15190, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2349:2:105", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_49_by_1", "typeString": "int_const 49" }, "value": "49" }, "nodeType": "ArrayTypeName", "src": "2341:11:105", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$49_storage_ptr", "typeString": "uint256[49]" } }, "value": null, "visibility": "private" } ], "scope": 15194, "src": "807:1562:105" } ], "src": "0:2370:105" }, "bytecode": "0x6080604052348015600f57600080fd5b50603f80601d6000396000f3fe6080604052600080fdfea26469706673582212207556fbd5e72a6d119bb852841ab3713b2731157f200eb95fc6cb70c71c239d9264736f6c63430006070033", "deployedBytecode": "0x6080604052600080fdfea26469706673582212207556fbd5e72a6d119bb852841ab3713b2731157f200eb95fc6cb70c71c239d9264736f6c63430006070033", "compiler": { "name": "solc", "version": "0.6.7+commit.b8d736ae.Emscripten.clang", "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "petersburg" } }