{ "contractName": "EnumerableSet", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.7.6+commit.7338295f\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Library for managing https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive types. Sets have the following properties: - Elements are added, removed, and checked for existence in constant time (O(1)). - Elements are enumerated in O(n). No guarantees are made on the ordering. ``` contract Example { // Add the library methods using EnumerableSet for EnumerableSet.AddressSet; // Declare a set state variable EnumerableSet.AddressSet private mySet; } ``` As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) and `uint256` (`UintSet`) are supported.\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/utils/EnumerableSet.sol\":\"EnumerableSet\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":1000000},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/utils/EnumerableSet.sol\":{\"keccak256\":\"0xae0992eb1ec30fd1ecdf2e04a6036decfc9797bf11dc1ec84b546b74318d5ec2\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://3b61f99a64e999682ad7bfbb3a1c762a20a0a5b30f9f2011693fa857969af61f\",\"dweb:/ipfs/QmZystFY76wkWCf7V3yKh3buZuKVKbswiE7y6yU62kk3zi\"]}},\"version\":1}", "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212205ee0e7b82594236d819f23d5f92a013aeac048b8742b69c45d9411f4676515e164736f6c63430007060033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212205ee0e7b82594236d819f23d5f92a013aeac048b8742b69c45d9411f4676515e164736f6c63430007060033", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "753:8598:36:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "753:8598:36:-:0;;;;;;;;", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.6.0 <0.8.0;\n\n/**\n * @dev Library for managing\n * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\n * types.\n *\n * Sets have the following properties:\n *\n * - Elements are added, removed, and checked for existence in constant time\n * (O(1)).\n * - Elements are enumerated in O(n). No guarantees are made on the ordering.\n *\n * ```\n * contract Example {\n * // Add the library methods\n * using EnumerableSet for EnumerableSet.AddressSet;\n *\n * // Declare a set state variable\n * EnumerableSet.AddressSet private mySet;\n * }\n * ```\n *\n * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)\n * and `uint256` (`UintSet`) are supported.\n */\nlibrary EnumerableSet {\n // To implement this library for multiple types with as little code\n // repetition as possible, we write it in terms of a generic Set type with\n // bytes32 values.\n // The Set implementation uses private functions, and user-facing\n // implementations (such as AddressSet) are just wrappers around the\n // underlying Set.\n // This means that we can only create new EnumerableSets for types that fit\n // in bytes32.\n\n struct Set {\n // Storage of set values\n bytes32[] _values;\n\n // Position of the value in the `values` array, plus 1 because index 0\n // means a value is not in the set.\n mapping (bytes32 => uint256) _indexes;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function _add(Set storage set, bytes32 value) private returns (bool) {\n if (!_contains(set, value)) {\n set._values.push(value);\n // The value is stored at length-1, but we add 1 to all indexes\n // and use 0 as a sentinel value\n set._indexes[value] = set._values.length;\n return true;\n } else {\n return false;\n }\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function _remove(Set storage set, bytes32 value) private returns (bool) {\n // We read and store the value's index to prevent multiple reads from the same storage slot\n uint256 valueIndex = set._indexes[value];\n\n if (valueIndex != 0) { // Equivalent to contains(set, value)\n // To delete an element from the _values array in O(1), we swap the element to delete with the last one in\n // the array, and then remove the last element (sometimes called as 'swap and pop').\n // This modifies the order of the array, as noted in {at}.\n\n uint256 toDeleteIndex = valueIndex - 1;\n uint256 lastIndex = set._values.length - 1;\n\n // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs\n // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.\n\n bytes32 lastvalue = set._values[lastIndex];\n\n // Move the last value to the index where the value to delete is\n set._values[toDeleteIndex] = lastvalue;\n // Update the index for the moved value\n set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based\n\n // Delete the slot where the moved value was stored\n set._values.pop();\n\n // Delete the index for the deleted slot\n delete set._indexes[value];\n\n return true;\n } else {\n return false;\n }\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function _contains(Set storage set, bytes32 value) private view returns (bool) {\n return set._indexes[value] != 0;\n }\n\n /**\n * @dev Returns the number of values on the set. O(1).\n */\n function _length(Set storage set) private view returns (uint256) {\n return set._values.length;\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function _at(Set storage set, uint256 index) private view returns (bytes32) {\n require(set._values.length > index, \"EnumerableSet: index out of bounds\");\n return set._values[index];\n }\n\n // Bytes32Set\n\n struct Bytes32Set {\n Set _inner;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n return _add(set._inner, value);\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n return _remove(set._inner, value);\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {\n return _contains(set._inner, value);\n }\n\n /**\n * @dev Returns the number of values in the set. O(1).\n */\n function length(Bytes32Set storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {\n return _at(set._inner, index);\n }\n\n // AddressSet\n\n struct AddressSet {\n Set _inner;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function add(AddressSet storage set, address value) internal returns (bool) {\n return _add(set._inner, bytes32(uint256(value)));\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function remove(AddressSet storage set, address value) internal returns (bool) {\n return _remove(set._inner, bytes32(uint256(value)));\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function contains(AddressSet storage set, address value) internal view returns (bool) {\n return _contains(set._inner, bytes32(uint256(value)));\n }\n\n /**\n * @dev Returns the number of values in the set. O(1).\n */\n function length(AddressSet storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function at(AddressSet storage set, uint256 index) internal view returns (address) {\n return address(uint256(_at(set._inner, index)));\n }\n\n\n // UintSet\n\n struct UintSet {\n Set _inner;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function add(UintSet storage set, uint256 value) internal returns (bool) {\n return _add(set._inner, bytes32(value));\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function remove(UintSet storage set, uint256 value) internal returns (bool) {\n return _remove(set._inner, bytes32(value));\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function contains(UintSet storage set, uint256 value) internal view returns (bool) {\n return _contains(set._inner, bytes32(value));\n }\n\n /**\n * @dev Returns the number of values on the set. O(1).\n */\n function length(UintSet storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function at(UintSet storage set, uint256 index) internal view returns (uint256) {\n return uint256(_at(set._inner, index));\n }\n}\n", "sourcePath": "@openzeppelin/contracts/utils/EnumerableSet.sol", "ast": { "absolutePath": "@openzeppelin/contracts/utils/EnumerableSet.sol", "exportedSymbols": { "EnumerableSet": [ 7756 ] }, "id": 7757, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 7278, "literals": [ "solidity", ">=", "0.6", ".0", "<", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:31:36" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 7279, "nodeType": "StructuredDocumentation", "src": "66:686:36", "text": " @dev Library for managing\n https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\n types.\n Sets have the following properties:\n - Elements are added, removed, and checked for existence in constant time\n (O(1)).\n - Elements are enumerated in O(n). No guarantees are made on the ordering.\n ```\n contract Example {\n // Add the library methods\n using EnumerableSet for EnumerableSet.AddressSet;\n // Declare a set state variable\n EnumerableSet.AddressSet private mySet;\n }\n ```\n As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)\n and `uint256` (`UintSet`) are supported." }, "fullyImplemented": true, "id": 7756, "linearizedBaseContracts": [ 7756 ], "name": "EnumerableSet", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "EnumerableSet.Set", "id": 7287, "members": [ { "constant": false, "id": 7282, "mutability": "mutable", "name": "_values", "nodeType": "VariableDeclaration", "scope": 7287, "src": "1275:17:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_bytes32_$dyn_storage_ptr", "typeString": "bytes32[]" }, "typeName": { "baseType": { "id": 7280, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1275:7:36", 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O(1).\n Returns true if the value was removed from the set, that is if it was\n present." }, "id": 7501, "implemented": true, "kind": "function", "modifiers": [], "name": "remove", "nodeType": "FunctionDefinition", "parameters": { "id": 7490, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7487, "mutability": "mutable", "name": "set", "nodeType": "VariableDeclaration", "scope": 7501, "src": "5200:22:36", "stateVariable": false, "storageLocation": "storage", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" }, "typeName": { "id": 7486, "name": "Bytes32Set", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7467, "src": "5200:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" } }, "visibility": "internal" }, { "constant": false, "id": 7489, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 7501, "src": "5224:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 7488, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5224:7:36", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "5199:39:36" }, "returnParameters": { "id": 7493, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7492, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 7501, "src": "5257:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7491, "name": "bool", "nodeType": "ElementaryTypeName", "src": "5257:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "5256:6:36" }, "scope": 7756, "src": "5184:129:36", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 7517, "nodeType": "Block", "src": "5480:52:36", "statements": [ { "expression": { "arguments": [ { "expression": { "id": 7512, "name": "set", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7504, "src": "5507:3:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set storage pointer" } }, "id": 7513, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "_inner", "nodeType": "MemberAccess", "referencedDeclaration": 7466, "src": "5507:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" } }, { "id": 7514, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7506, "src": "5519:5:36", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 7511, "name": "_contains", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7426, "src": "5497:9:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_Set_$7287_storage_ptr_$_t_bytes32_$returns$_t_bool_$", "typeString": "function (struct EnumerableSet.Set storage pointer,bytes32) view returns (bool)" } }, "id": 7515, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5497:28:36", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 7510, "id": 7516, "nodeType": "Return", "src": "5490:35:36" } ] }, "documentation": { "id": 7502, "nodeType": "StructuredDocumentation", "src": "5319:70:36", "text": " @dev Returns true if the value is in the set. O(1)." }, "id": 7518, "implemented": true, "kind": "function", "modifiers": [], "name": "contains", "nodeType": "FunctionDefinition", "parameters": { "id": 7507, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7504, "mutability": "mutable", "name": "set", "nodeType": "VariableDeclaration", "scope": 7518, "src": "5412:22:36", "stateVariable": false, "storageLocation": "storage", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" }, "typeName": { "id": 7503, "name": "Bytes32Set", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7467, "src": "5412:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" } }, "visibility": "internal" }, { "constant": false, "id": 7506, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 7518, "src": "5436:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 7505, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5436:7:36", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "5411:39:36" }, "returnParameters": { "id": 7510, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7509, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 7518, "src": "5474:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7508, "name": "bool", "nodeType": "ElementaryTypeName", "src": "5474:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "5473:6:36" }, "scope": 7756, "src": "5394:138:36", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 7531, "nodeType": "Block", "src": "5685:43:36", "statements": [ { "expression": { "arguments": [ { "expression": { "id": 7527, "name": "set", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7521, "src": "5710:3:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set storage pointer" } }, "id": 7528, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "_inner", "nodeType": "MemberAccess", "referencedDeclaration": 7466, "src": "5710:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" } ], "id": 7526, "name": "_length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7439, "src": "5702:7:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_Set_$7287_storage_ptr_$returns$_t_uint256_$", "typeString": "function (struct EnumerableSet.Set storage pointer) view returns (uint256)" } }, "id": 7529, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5702:19:36", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 7525, "id": 7530, "nodeType": "Return", "src": "5695:26:36" } ] }, "documentation": { "id": 7519, "nodeType": "StructuredDocumentation", "src": "5538:70:36", "text": " @dev Returns the number of values in the set. O(1)." }, "id": 7532, "implemented": true, "kind": "function", "modifiers": [], "name": "length", "nodeType": "FunctionDefinition", "parameters": { "id": 7522, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7521, "mutability": "mutable", "name": "set", "nodeType": "VariableDeclaration", "scope": 7532, "src": "5629:22:36", "stateVariable": false, "storageLocation": "storage", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" }, "typeName": { "id": 7520, "name": "Bytes32Set", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7467, "src": "5629:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" } }, "visibility": "internal" } ], "src": "5628:24:36" }, "returnParameters": { "id": 7525, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7524, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 7532, "src": "5676:7:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7523, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5676:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "5675:9:36" }, "scope": 7756, "src": "5613:115:36", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 7548, "nodeType": "Block", "src": "6143:46:36", "statements": [ { "expression": { "arguments": [ { "expression": { "id": 7543, "name": "set", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7535, "src": "6164:3:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set storage pointer" } }, "id": 7544, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "_inner", "nodeType": "MemberAccess", "referencedDeclaration": 7466, "src": "6164:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" } }, { "id": 7545, "name": "index", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7537, "src": "6176:5:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7542, "name": "_at", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7464, "src": "6160:3:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_Set_$7287_storage_ptr_$_t_uint256_$returns$_t_bytes32_$", "typeString": "function (struct EnumerableSet.Set storage pointer,uint256) view returns (bytes32)" } }, "id": 7546, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6160:22:36", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 7541, "id": 7547, "nodeType": "Return", "src": "6153:29:36" } ] }, "documentation": { "id": 7533, "nodeType": "StructuredDocumentation", "src": "5733:322:36", "text": " @dev Returns the value stored at position `index` in the set. O(1).\n Note that there are no guarantees on the ordering of values inside the\n array, and it may change when more values are added or removed.\n Requirements:\n - `index` must be strictly less than {length}." }, "id": 7549, "implemented": true, "kind": "function", "modifiers": [], "name": "at", "nodeType": "FunctionDefinition", "parameters": { "id": 7538, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7535, "mutability": "mutable", "name": "set", "nodeType": "VariableDeclaration", "scope": 7549, "src": "6072:22:36", "stateVariable": false, "storageLocation": "storage", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" }, "typeName": { "id": 7534, "name": "Bytes32Set", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7467, "src": "6072:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Bytes32Set_$7467_storage_ptr", "typeString": "struct EnumerableSet.Bytes32Set" } }, "visibility": "internal" }, { "constant": false, "id": 7537, "mutability": "mutable", "name": "index", "nodeType": "VariableDeclaration", "scope": 7549, "src": "6096:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7536, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6096:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "6071:39:36" }, "returnParameters": { "id": 7541, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7540, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 7549, "src": "6134:7:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 7539, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6134:7:36", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "6133:9:36" }, "scope": 7756, "src": "6060:129:36", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "canonicalName": "EnumerableSet.AddressSet", "id": 7552, "members": [ { "constant": false, "id": 7551, "mutability": "mutable", "name": "_inner", "nodeType": "VariableDeclaration", "scope": 7552, "src": "6242:10:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_struct$_Set_$7287_storage_ptr", "typeString": "struct EnumerableSet.Set" }, "typeName": { "id": 7550, "name": "Set", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7287, "src": "6242:3:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Set_$7287_storage_ptr", "typeString": "struct EnumerableSet.Set" } }, "visibility": "internal" } ], "name": "AddressSet", "nodeType": "StructDefinition", "scope": 7756, "src": "6214:45:36", "visibility": "public" }, { "body": { "id": 7574, "nodeType": "Block", "src": "6505:65:36", "statements": [ { "expression": { "arguments": [ { "expression": { "id": 7563, "name": "set", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7555, "src": "6527:3:36", "typeDescriptions": { "typeIdentifier": "t_struct$_AddressSet_$7552_storage_ptr", "typeString": "struct EnumerableSet.AddressSet storage pointer" } }, "id": 7564, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "_inner", "nodeType": "MemberAccess", "referencedDeclaration": 7551, "src": "6527:10:36", "typeDescriptions": { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" } }, { "arguments": [ { "arguments": [ { "id": 7569, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7557, "src": "6555:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 7568, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6547:7:36", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 7567, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6547:7:36", "typeDescriptions": {} } }, "id": 7570, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6547:14:36", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7566, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6539:7:36", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 7565, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6539:7:36", "typeDescriptions": {} } }, "id": 7571, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6539:23:36", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 7562, "name": "_add", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7328, "src": "6522:4:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_Set_$7287_storage_ptr_$_t_bytes32_$returns$_t_bool_$", "typeString": "function (struct EnumerableSet.Set storage pointer,bytes32) returns (bool)" } }, "id": 7572, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6522:41:36", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 7561, "id": 7573, "nodeType": "Return", "src": "6515:48:36" } ] }, "documentation": { "id": 7553, "nodeType": "StructuredDocumentation", "src": "6265:159:36", "text": " @dev Add a value to a set. 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O(1).\n Returns true if the value was added to the set, that is if it was not\n already present." }, "id": 7288, "name": "StructuredDocumentation", "src": "1476:159:36" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "set", "scope": 7328, "stateVariable": false, "storageLocation": "storage", "type": "struct EnumerableSet.Set", "visibility": "internal" }, "children": [ { "attributes": { "name": "Set", "referencedDeclaration": 7287, "type": "struct EnumerableSet.Set" }, "id": 7289, "name": "UserDefinedTypeName", "src": "1654:3:36" } ], "id": 7290, "name": "VariableDeclaration", "src": "1654:15:36" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "value", "scope": 7328, "stateVariable": false, "storageLocation": "default", "type": "bytes32", "visibility": "internal" }, "children": [ { "attributes": { "name": "bytes32", "type": "bytes32" }, "id": 7291, "name": "ElementaryTypeName", "src": "1671:7:36" } ], "id": 7292, "name": 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O(1).\n Returns true if the value was removed from the set, that is if it was\n present." }, "id": 7576, "name": "StructuredDocumentation", "src": "6576:157:36" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "set", "scope": 7598, "stateVariable": false, "storageLocation": "storage", "type": "struct EnumerableSet.AddressSet", "visibility": "internal" }, "children": [ { "attributes": { "name": "AddressSet", "referencedDeclaration": 7552, "type": "struct EnumerableSet.AddressSet" }, "id": 7577, "name": "UserDefinedTypeName", "src": "6754:10:36" } ], "id": 7578, "name": "VariableDeclaration", "src": "6754:22:36" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "value", "scope": 7598, "stateVariable": false, "storageLocation": "default", "type": "address", "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 7579, "name": "ElementaryTypeName", "src": "6778:7:36" } ], "id": 7580, "name": "VariableDeclaration", "src": "6778:13:36" } ], "id": 7581, "name": "ParameterList", "src": "6753:39:36" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "", "scope": 7598, "stateVariable": false, "storageLocation": "default", "type": "bool", "visibility": "internal" }, "children": [ { "attributes": { "name": "bool", "type": "bool" }, "id": 7582, "name": "ElementaryTypeName", "src": "6811:4:36" } ], "id": 7583, "name": "VariableDeclaration", "src": "6811:4:36" } ], "id": 7584, "name": "ParameterList", "src": "6810:6:36" }, { "children": [ { "attributes": { "functionReturnParameters": 7584 }, "children": [ { "attributes": { "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "tryCall": false, "type": "bool", "type_conversion": false }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "overloadedDeclarations": [ null ], "referencedDeclaration": 7408, "type": "function (struct EnumerableSet.Set storage pointer,bytes32) returns (bool)", "value": "_remove" }, "id": 7585, "name": "Identifier", "src": "6834:7:36" }, { "attributes": { "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "member_name": "_inner", "referencedDeclaration": 7551, "type": "struct EnumerableSet.Set storage ref" }, "children": [ { "attributes": { "overloadedDeclarations": [ null ], "referencedDeclaration": 7578, "type": "struct EnumerableSet.AddressSet storage pointer", "value": "set" }, "id": 7586, "name": "Identifier", "src": "6842:3:36" } ], "id": 7587, "name": "MemberAccess", "src": "6842:10:36" }, { "attributes": { "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "tryCall": false, "type": "bytes32", "type_conversion": true }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "type": "type(bytes32)" }, "children": [ { "attributes": { "name": "bytes32" }, "id": 7588, "name": "ElementaryTypeName", "src": "6854:7:36" } ], "id": 7589, "name": "ElementaryTypeNameExpression", "src": "6854:7:36" }, { "attributes": { "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "tryCall": false, "type": "uint256", "type_conversion": true }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "type": "type(uint256)" }, "children": [ { "attributes": { "name": "uint256" }, "id": 7590, "name": "ElementaryTypeName", "src": "6862:7:36" } ], "id": 7591, "name": "ElementaryTypeNameExpression", "src": "6862:7:36" }, { "attributes": { "overloadedDeclarations": [ null ], "referencedDeclaration": 7580, "type": "address", "value": "value" }, "id": 7592, "name": "Identifier", "src": "6870:5:36" } ], "id": 7593, "name": "FunctionCall", "src": "6862:14:36" } ], "id": 7594, "name": "FunctionCall", "src": "6854:23:36" } ], "id": 7595, "name": "FunctionCall", "src": "6834:44:36" } ], "id": 7596, "name": "Return", "src": "6827:51:36" } ], "id": 7597, "name": "Block", "src": "6817:68:36" } ], "id": 7598, "name": "FunctionDefinition", "src": "6738:147:36" }, { "attributes": { "implemented": true, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "contains", "scope": 7756, "stateMutability": "view", "virtual": false, "visibility": "internal" }, "children": [ { "attributes": { "text": " @dev Returns true if the value is in the set. 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O(1)." }, "id": 7622, "name": "StructuredDocumentation", "src": "7128:70:36" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "set", "scope": 7635, "stateVariable": false, "storageLocation": "storage", "type": "struct EnumerableSet.AddressSet", "visibility": "internal" }, "children": [ { "attributes": { "name": "AddressSet", "referencedDeclaration": 7552, "type": "struct EnumerableSet.AddressSet" }, "id": 7623, "name": "UserDefinedTypeName", "src": "7219:10:36" } ], "id": 7624, "name": "VariableDeclaration", "src": "7219:22:36" } ], "id": 7625, "name": "ParameterList", "src": "7218:24:36" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "", "scope": 7635, "stateVariable": false, "storageLocation": "default", "type": "uint256", "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 7626, "name": "ElementaryTypeName", "src": "7266:7:36" } ], "id": 7627, "name": "VariableDeclaration", "src": "7266:7:36" } ], "id": 7628, "name": "ParameterList", "src": "7265:9:36" }, { "children": [ { "attributes": { "functionReturnParameters": 7628 }, "children": [ { "attributes": { "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "tryCall": false, "type": "uint256", "type_conversion": false }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Set_$7287_storage", "typeString": "struct EnumerableSet.Set storage ref" } ], "overloadedDeclarations": [ null ], "referencedDeclaration": 7439, "type": "function (struct EnumerableSet.Set storage pointer) view returns (uint256)", "value": "_length" }, "id": 7629, "name": "Identifier", "src": "7292:7:36" }, { "attributes": { "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "member_name": "_inner", "referencedDeclaration": 7551, "type": "struct EnumerableSet.Set storage ref" }, "children": [ { "attributes": { "overloadedDeclarations": [ null ], "referencedDeclaration": 7624, "type": "struct EnumerableSet.AddressSet storage pointer", "value": "set" }, "id": 7630, "name": "Identifier", "src": "7300:3:36" } ], "id": 7631, "name": "MemberAccess", "src": "7300:10:36" } ], "id": 7632, "name": "FunctionCall", "src": "7292:19:36" } ], "id": 7633, "name": "Return", "src": "7285:26:36" } ], "id": 7634, "name": "Block", "src": "7275:43:36" } ], "id": 7635, "name": "FunctionDefinition", "src": "7203:115:36" }, { "attributes": { "implemented": true, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "at", "scope": 7756, "stateMutability": "view", "virtual": false, "visibility": "internal" }, "children": [ { "attributes": { "text": " @dev Returns the value stored at position `index` in the set. O(1).\n Note that there are no guarantees on the ordering of values inside the\n array, and it may change when more values are added or removed.\n Requirements:\n - `index` must be strictly less than {length}." }, "id": 7636, "name": "StructuredDocumentation", "src": "7323:322:36" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "set", "scope": 7658, "stateVariable": false, "storageLocation": "storage", "type": "struct EnumerableSet.AddressSet", "visibility": "internal" }, "children": [ { "attributes": { "name": "AddressSet", "referencedDeclaration": 7552, "type": "struct EnumerableSet.AddressSet" }, "id": 7637, "name": "UserDefinedTypeName", "src": "7662:10:36" } ], "id": 7638, "name": "VariableDeclaration", "src": "7662:22:36" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "index", "scope": 7658, "stateVariable": false, "storageLocation": "default", "type": "uint256", "visibility": "internal" }, "children": [ { 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Sets have the following properties: - Elements are added, removed, and checked for existence in constant time (O(1)). - Elements are enumerated in O(n). No guarantees are made on the ordering. ``` contract Example { // Add the library methods using EnumerableSet for EnumerableSet.AddressSet; // Declare a set state variable EnumerableSet.AddressSet private mySet; } ``` As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) and `uint256` (`UintSet`) are supported.", "kind": "dev", "methods": {}, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }