{ "contractName": "Initializable", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.6.11+commit.5ef660b1\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Helper contract to support initializer functions. To use it, replace the constructor with a function that has the `initializer` modifier. WARNING: Unlike constructors, initializer functions must be manually invoked. This applies both to deploying an Initializable contract, as well as extending an Initializable contract via inheritance. WARNING: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or ensure that all initializers are idempotent, because this is not dealt with automatically as with constructors.\",\"kind\":\"dev\",\"methods\":{},\"stateVariables\":{\"initialized\":{\"details\":\"Indicates that the contract has been initialized.\"},\"initializing\":{\"details\":\"Indicates that the contract is in the process of being initialized.\"}},\"title\":\"Initializable\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol\":\"Initializable\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol\":{\"keccak256\":\"0x9bfec92e36234ecc99b5d37230acb6cd1f99560233753162204104a4897e8721\",\"urls\":[\"bzz-raw://5cf7c208583d4d046d75bd99f5507412ab01cce9dd9f802ce9768a416d93ea2f\",\"dweb:/ipfs/QmcQS1BBMPpVEkXP3qzwSjxHNrqDek8YeR7xbVWDC9ApC7\"]}},\"version\":1}", "bytecode": "0x6080604052348015600f57600080fd5b50603f80601d6000396000f3fe6080604052600080fdfea264697066735822122033a699659c173586d467e221d9e8e7b5e69bcf1e2536399cb2f52c738d48cff464736f6c634300060b0033", "deployedBytecode": "0x6080604052600080fdfea264697066735822122033a699659c173586d467e221d9e8e7b5e69bcf1e2536399cb2f52c738d48cff464736f6c634300060b0033", "immutableReferences": {}, "sourceMap": "657:1357:108:-:0;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "657:1357:108:-:0;;;;;", "source": "pragma solidity >=0.4.24 <0.7.0;\n\n\n/**\n * @title Initializable\n *\n * @dev Helper contract to support initializer functions. To use it, replace\n * the constructor with a function that has the `initializer` modifier.\n * WARNING: Unlike constructors, initializer functions must be manually\n * invoked. This applies both to deploying an Initializable contract, as well\n * as extending an Initializable contract via inheritance.\n * WARNING: When used with inheritance, manual care must be taken to not invoke\n * a parent initializer twice, or ensure that all initializers are idempotent,\n * because this is not dealt with automatically as with constructors.\n */\ncontract Initializable {\n\n /**\n * @dev Indicates that the contract has been initialized.\n */\n bool private initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private initializing;\n\n /**\n * @dev Modifier to use in the initializer function of a contract.\n */\n modifier initializer() {\n require(initializing || isConstructor() || !initialized, \"Contract instance has already been initialized\");\n\n bool isTopLevelCall = !initializing;\n if (isTopLevelCall) {\n initializing = true;\n initialized = true;\n }\n\n _;\n\n if (isTopLevelCall) {\n initializing = false;\n }\n }\n\n /// @dev Returns true if and only if the function is running in the constructor\n function isConstructor() private view returns (bool) {\n // extcodesize checks the size of the code stored in an address, and\n // address returns the current address. Since the code is still not\n // deployed when running a constructor, any checks on its code size will\n // yield zero, making it an effective way to detect if a contract is\n // under construction or not.\n address self = address(this);\n uint256 cs;\n assembly { cs := extcodesize(self) }\n return cs == 0;\n }\n\n // Reserved storage space to allow for layout changes in the future.\n uint256[50] private ______gap;\n}\n", "sourcePath": "@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol", "ast": { "absolutePath": "@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol", "exportedSymbols": { "Initializable": [ 37297 ] }, "id": 37298, "license": null, "nodeType": "SourceUnit", "nodes": [ { "id": 37224, "literals": [ "solidity", ">=", "0.4", ".24", "<", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "0:32:108" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 37225, "nodeType": "StructuredDocumentation", "src": "35:621:108", "text": " @title Initializable\n @dev Helper contract to support initializer functions. To use it, replace\n the constructor with a function that has the `initializer` modifier.\n WARNING: Unlike constructors, initializer functions must be manually\n invoked. This applies both to deploying an Initializable contract, as well\n as extending an Initializable contract via inheritance.\n WARNING: When used with inheritance, manual care must be taken to not invoke\n a parent initializer twice, or ensure that all initializers are idempotent,\n because this is not dealt with automatically as with constructors." }, "fullyImplemented": true, "id": 37297, "linearizedBaseContracts": [ 37297 ], "name": "Initializable", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "documentation": { "id": 37226, "nodeType": "StructuredDocumentation", "src": "685:69:108", "text": " @dev Indicates that the contract has been initialized." }, "id": 37228, "mutability": "mutable", "name": "initialized", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37297, "src": "757:24:108", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37227, "name": "bool", "nodeType": "ElementaryTypeName", "src": "757:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "private" }, { "constant": false, "documentation": { "id": 37229, "nodeType": "StructuredDocumentation", "src": "786:87:108", "text": " @dev Indicates that the contract is in the process of being initialized." }, "id": 37231, "mutability": "mutable", "name": "initializing", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37297, "src": "876:25:108", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37230, "name": "bool", "nodeType": "ElementaryTypeName", "src": "876:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "private" }, { "body": { "id": 37269, "nodeType": "Block", "src": "1010:313:108", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 37241, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 37238, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 37235, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1024:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 37236, "name": "isConstructor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37292, "src": "1040:13:108", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_bool_$", "typeString": "function () view returns (bool)" } }, "id": 37237, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1040:15:108", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1024:31:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "id": 37240, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "1059:12:108", "subExpression": { "argumentTypes": null, "id": 37239, "name": "initialized", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37228, "src": "1060:11:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1024:47:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "436f6e747261637420696e7374616e63652068617320616c7265616479206265656e20696e697469616c697a6564", "id": 37242, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1073:48:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_9fbba6c4dcac9134893b633b9564f36435b3f927c1d5fa152c5c14b20cecb1a4", "typeString": "literal_string \"Contract instance has already been initialized\"" }, "value": "Contract instance has already been initialized" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_9fbba6c4dcac9134893b633b9564f36435b3f927c1d5fa152c5c14b20cecb1a4", "typeString": "literal_string \"Contract instance has already been initialized\"" } ], "id": 37234, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "1016:7:108", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 37243, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1016:106:108", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 37244, "nodeType": "ExpressionStatement", "src": "1016:106:108" }, { "assignments": [ 37246 ], "declarations": [ { "constant": false, "id": 37246, "mutability": "mutable", "name": "isTopLevelCall", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37269, "src": "1129:19:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37245, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1129:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 37249, "initialValue": { "argumentTypes": null, "id": 37248, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "1151:13:108", "subExpression": { "argumentTypes": null, "id": 37247, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1152:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "VariableDeclarationStatement", "src": "1129:35:108" }, { "condition": { "argumentTypes": null, "id": 37250, "name": "isTopLevelCall", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37246, "src": "1174:14:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 37260, "nodeType": "IfStatement", "src": "1170:80:108", "trueBody": { "id": 37259, "nodeType": "Block", "src": "1190:60:108", "statements": [ { "expression": { "argumentTypes": null, "id": 37253, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 37251, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1198:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "74727565", "id": 37252, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1213:4:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "1198:19:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 37254, "nodeType": "ExpressionStatement", "src": "1198:19:108" }, { "expression": { "argumentTypes": null, "id": 37257, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 37255, "name": "initialized", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37228, "src": "1225:11:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "74727565", "id": 37256, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1239:4:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "1225:18:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 37258, "nodeType": "ExpressionStatement", "src": "1225:18:108" } ] } }, { "id": 37261, "nodeType": "PlaceholderStatement", "src": "1256:1:108" }, { "condition": { "argumentTypes": null, "id": 37262, "name": "isTopLevelCall", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37246, "src": "1268:14:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 37268, "nodeType": "IfStatement", "src": "1264:55:108", "trueBody": { "id": 37267, "nodeType": "Block", "src": "1284:35:108", "statements": [ { "expression": { "argumentTypes": null, "id": 37265, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 37263, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1292:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "66616c7365", "id": 37264, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1307:5:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "src": "1292:20:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 37266, "nodeType": "ExpressionStatement", "src": "1292:20:108" } ] } } ] }, "documentation": { "id": 37232, "nodeType": "StructuredDocumentation", "src": "906:78:108", "text": " @dev Modifier to use in the initializer function of a contract." }, "id": 37270, "name": "initializer", "nodeType": "ModifierDefinition", "overrides": null, "parameters": { "id": 37233, "nodeType": "ParameterList", "parameters": [], "src": "1007:2:108" }, "src": "987:336:108", "virtual": false, "visibility": "internal" }, { "body": { "id": 37291, "nodeType": "Block", "src": "1462:445:108", "statements": [ { "assignments": [ 37277 ], "declarations": [ { "constant": false, "id": 37277, "mutability": "mutable", "name": "self", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37291, "src": "1797:12:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 37276, "name": "address", "nodeType": "ElementaryTypeName", "src": "1797:7:108", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 37282, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 37280, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "1820:4:108", "typeDescriptions": { "typeIdentifier": "t_contract$_Initializable_$37297", "typeString": "contract Initializable" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Initializable_$37297", "typeString": "contract Initializable" } ], "id": 37279, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1812:7:108", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 37278, "name": "address", "nodeType": "ElementaryTypeName", "src": "1812:7:108", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 37281, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1812:13:108", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "1797:28:108" }, { "assignments": [ 37284 ], "declarations": [ { "constant": false, "id": 37284, "mutability": "mutable", "name": "cs", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37291, "src": "1831:10:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 37283, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1831:7:108", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 37285, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1831:10:108" }, { "AST": { "nodeType": "YulBlock", "src": "1856:27:108", "statements": [ { "nodeType": "YulAssignment", "src": "1858:23:108", "value": { "arguments": [ { "name": "self", "nodeType": "YulIdentifier", "src": "1876:4:108" } ], "functionName": { "name": "extcodesize", "nodeType": "YulIdentifier", "src": "1864:11:108" }, "nodeType": "YulFunctionCall", "src": "1864:17:108" }, "variableNames": [ { "name": "cs", "nodeType": "YulIdentifier", "src": "1858:2:108" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 37284, "isOffset": false, "isSlot": false, "src": "1858:2:108", "valueSize": 1 }, { "declaration": 37277, "isOffset": false, "isSlot": false, "src": "1876:4:108", "valueSize": 1 } ], "id": 37286, "nodeType": "InlineAssembly", "src": "1847:36:108" }, { "expression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 37289, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 37287, "name": "cs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37284, "src": "1895:2:108", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 37288, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1901:1:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1895:7:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 37275, "id": 37290, "nodeType": "Return", "src": "1888:14:108" } ] }, "documentation": { "id": 37271, "nodeType": "StructuredDocumentation", "src": "1327:79:108", "text": "@dev Returns true if and only if the function is running in the constructor" }, "id": 37292, "implemented": true, "kind": "function", "modifiers": [], "name": "isConstructor", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 37272, "nodeType": "ParameterList", "parameters": [], "src": "1431:2:108" }, "returnParameters": { "id": 37275, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 37274, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37292, "src": "1456:4:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37273, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1456:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1455:6:108" }, "scope": 37297, "src": "1409:498:108", "stateMutability": "view", "virtual": false, "visibility": "private" }, { "constant": false, "id": 37296, "mutability": "mutable", "name": "______gap", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37297, "src": "1982:29:108", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$50_storage", "typeString": "uint256[50]" }, "typeName": { "baseType": { "id": 37293, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1982:7:108", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 37295, "length": { "argumentTypes": null, "hexValue": "3530", "id": 37294, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1990:2:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_50_by_1", "typeString": "int_const 50" }, "value": "50" }, "nodeType": "ArrayTypeName", "src": "1982:11:108", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$50_storage_ptr", "typeString": "uint256[50]" } }, "value": null, "visibility": "private" } ], "scope": 37298, "src": "657:1357:108" } ], "src": "0:2015:108" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol", "exportedSymbols": { "Initializable": [ 37297 ] }, "id": 37298, "license": null, "nodeType": "SourceUnit", "nodes": [ { "id": 37224, "literals": [ "solidity", ">=", "0.4", ".24", "<", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "0:32:108" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 37225, "nodeType": "StructuredDocumentation", "src": "35:621:108", "text": " @title Initializable\n @dev Helper contract to support initializer functions. To use it, replace\n the constructor with a function that has the `initializer` modifier.\n WARNING: Unlike constructors, initializer functions must be manually\n invoked. This applies both to deploying an Initializable contract, as well\n as extending an Initializable contract via inheritance.\n WARNING: When used with inheritance, manual care must be taken to not invoke\n a parent initializer twice, or ensure that all initializers are idempotent,\n because this is not dealt with automatically as with constructors." }, "fullyImplemented": true, "id": 37297, "linearizedBaseContracts": [ 37297 ], "name": "Initializable", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "documentation": { "id": 37226, "nodeType": "StructuredDocumentation", "src": "685:69:108", "text": " @dev Indicates that the contract has been initialized." }, "id": 37228, "mutability": "mutable", "name": "initialized", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37297, "src": "757:24:108", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37227, "name": "bool", "nodeType": "ElementaryTypeName", "src": "757:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "private" }, { "constant": false, "documentation": { "id": 37229, "nodeType": "StructuredDocumentation", "src": "786:87:108", "text": " @dev Indicates that the contract is in the process of being initialized." }, "id": 37231, "mutability": "mutable", "name": "initializing", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37297, "src": "876:25:108", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37230, "name": "bool", "nodeType": "ElementaryTypeName", "src": "876:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "private" }, { "body": { "id": 37269, "nodeType": "Block", "src": "1010:313:108", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 37241, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 37238, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 37235, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1024:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 37236, "name": "isConstructor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37292, "src": "1040:13:108", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_bool_$", "typeString": "function () view returns (bool)" } }, "id": 37237, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1040:15:108", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1024:31:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "id": 37240, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "1059:12:108", "subExpression": { "argumentTypes": null, "id": 37239, "name": "initialized", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37228, "src": "1060:11:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1024:47:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "436f6e747261637420696e7374616e63652068617320616c7265616479206265656e20696e697469616c697a6564", "id": 37242, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1073:48:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_9fbba6c4dcac9134893b633b9564f36435b3f927c1d5fa152c5c14b20cecb1a4", "typeString": "literal_string \"Contract instance has already been initialized\"" }, "value": "Contract instance has already been initialized" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_9fbba6c4dcac9134893b633b9564f36435b3f927c1d5fa152c5c14b20cecb1a4", "typeString": "literal_string \"Contract instance has already been initialized\"" } ], "id": 37234, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "1016:7:108", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 37243, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1016:106:108", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 37244, "nodeType": "ExpressionStatement", "src": "1016:106:108" }, { "assignments": [ 37246 ], "declarations": [ { "constant": false, "id": 37246, "mutability": "mutable", "name": "isTopLevelCall", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37269, "src": "1129:19:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37245, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1129:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 37249, "initialValue": { "argumentTypes": null, "id": 37248, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "1151:13:108", "subExpression": { "argumentTypes": null, "id": 37247, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1152:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "VariableDeclarationStatement", "src": "1129:35:108" }, { "condition": { "argumentTypes": null, "id": 37250, "name": "isTopLevelCall", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37246, "src": "1174:14:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 37260, "nodeType": "IfStatement", "src": "1170:80:108", "trueBody": { "id": 37259, "nodeType": "Block", "src": "1190:60:108", "statements": [ { "expression": { "argumentTypes": null, "id": 37253, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 37251, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1198:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "74727565", "id": 37252, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1213:4:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "1198:19:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 37254, "nodeType": "ExpressionStatement", "src": "1198:19:108" }, { "expression": { "argumentTypes": null, "id": 37257, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 37255, "name": "initialized", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37228, "src": "1225:11:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "74727565", "id": 37256, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1239:4:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "1225:18:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 37258, "nodeType": "ExpressionStatement", "src": "1225:18:108" } ] } }, { "id": 37261, "nodeType": "PlaceholderStatement", "src": "1256:1:108" }, { "condition": { "argumentTypes": null, "id": 37262, "name": "isTopLevelCall", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37246, "src": "1268:14:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 37268, "nodeType": "IfStatement", "src": "1264:55:108", "trueBody": { "id": 37267, "nodeType": "Block", "src": "1284:35:108", "statements": [ { "expression": { "argumentTypes": null, "id": 37265, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 37263, "name": "initializing", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37231, "src": "1292:12:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "66616c7365", "id": 37264, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1307:5:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "src": "1292:20:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 37266, "nodeType": "ExpressionStatement", "src": "1292:20:108" } ] } } ] }, "documentation": { "id": 37232, "nodeType": "StructuredDocumentation", "src": "906:78:108", "text": " @dev Modifier to use in the initializer function of a contract." }, "id": 37270, "name": "initializer", "nodeType": "ModifierDefinition", "overrides": null, "parameters": { "id": 37233, "nodeType": "ParameterList", "parameters": [], "src": "1007:2:108" }, "src": "987:336:108", "virtual": false, "visibility": "internal" }, { "body": { "id": 37291, "nodeType": "Block", "src": "1462:445:108", "statements": [ { "assignments": [ 37277 ], "declarations": [ { "constant": false, "id": 37277, "mutability": "mutable", "name": "self", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37291, "src": "1797:12:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 37276, "name": "address", "nodeType": "ElementaryTypeName", "src": "1797:7:108", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 37282, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 37280, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "1820:4:108", "typeDescriptions": { "typeIdentifier": "t_contract$_Initializable_$37297", "typeString": "contract Initializable" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_Initializable_$37297", "typeString": "contract Initializable" } ], "id": 37279, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1812:7:108", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 37278, "name": "address", "nodeType": "ElementaryTypeName", "src": "1812:7:108", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 37281, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1812:13:108", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "1797:28:108" }, { "assignments": [ 37284 ], "declarations": [ { "constant": false, "id": 37284, "mutability": "mutable", "name": "cs", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37291, "src": "1831:10:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 37283, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1831:7:108", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 37285, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1831:10:108" }, { "AST": { "nodeType": "YulBlock", "src": "1856:27:108", "statements": [ { "nodeType": "YulAssignment", "src": "1858:23:108", "value": { "arguments": [ { "name": "self", "nodeType": "YulIdentifier", "src": "1876:4:108" } ], "functionName": { "name": "extcodesize", "nodeType": "YulIdentifier", "src": "1864:11:108" }, "nodeType": "YulFunctionCall", "src": "1864:17:108" }, "variableNames": [ { "name": "cs", "nodeType": "YulIdentifier", "src": "1858:2:108" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 37284, "isOffset": false, "isSlot": false, "src": "1858:2:108", "valueSize": 1 }, { "declaration": 37277, "isOffset": false, "isSlot": false, "src": "1876:4:108", "valueSize": 1 } ], "id": 37286, "nodeType": "InlineAssembly", "src": "1847:36:108" }, { "expression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 37289, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 37287, "name": "cs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 37284, "src": "1895:2:108", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 37288, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1901:1:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1895:7:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 37275, "id": 37290, "nodeType": "Return", "src": "1888:14:108" } ] }, "documentation": { "id": 37271, "nodeType": "StructuredDocumentation", "src": "1327:79:108", "text": "@dev Returns true if and only if the function is running in the constructor" }, "id": 37292, "implemented": true, "kind": "function", "modifiers": [], "name": "isConstructor", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 37272, "nodeType": "ParameterList", "parameters": [], "src": "1431:2:108" }, "returnParameters": { "id": 37275, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 37274, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37292, "src": "1456:4:108", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 37273, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1456:4:108", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1455:6:108" }, "scope": 37297, "src": "1409:498:108", "stateMutability": "view", "virtual": false, "visibility": "private" }, { "constant": false, "id": 37296, "mutability": "mutable", "name": "______gap", "nodeType": "VariableDeclaration", "overrides": null, "scope": 37297, "src": "1982:29:108", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$50_storage", "typeString": "uint256[50]" }, "typeName": { "baseType": { "id": 37293, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1982:7:108", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 37295, "length": { "argumentTypes": null, "hexValue": "3530", "id": 37294, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1990:2:108", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_50_by_1", "typeString": "int_const 50" }, "value": "50" }, "nodeType": "ArrayTypeName", "src": "1982:11:108", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$50_storage_ptr", "typeString": "uint256[50]" } }, "value": null, "visibility": "private" } ], "scope": 37298, "src": "657:1357:108" } ], "src": "0:2015:108" }, "compiler": { "name": "solc", "version": "0.6.11+commit.5ef660b1.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.2.0", "updatedAt": "2020-08-12T09:47:18.516Z", "devdoc": { "details": "Helper contract to support initializer functions. To use it, replace the constructor with a function that has the `initializer` modifier. WARNING: Unlike constructors, initializer functions must be manually invoked. This applies both to deploying an Initializable contract, as well as extending an Initializable contract via inheritance. WARNING: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or ensure that all initializers are idempotent, because this is not dealt with automatically as with constructors.", "kind": "dev", "methods": {}, "stateVariables": { "initialized": { "details": "Indicates that the contract has been initialized." }, "initializing": { "details": "Indicates that the contract is in the process of being initialized." } }, "title": "Initializable", "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }