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1688 lines
67 KiB
JSON
1688 lines
67 KiB
JSON
3 years ago
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{
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"source": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n */\nlibrary Counters {\n struct Counter {\n // This variable should never be directly accessed by users of the library: interactions must be restricted to\n // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n // this feature: see https://github.com/ethereum/solidity/issues/4637\n uint256 _value; // default: 0\n }\n\n function current(Counter storage counter) internal view returns (uint256) {\n return counter._value;\n }\n\n function increment(Counter storage counter) internal {\n unchecked {\n counter._value += 1;\n }\n }\n\n function decrement(Counter storage counter) internal {\n uint256 value = counter._value;\n require(value > 0, \"Counter: decrement overflow\");\n unchecked {\n counter._value = value - 1;\n }\n }\n\n function reset(Counter storage counter) internal {\n counter._value = 0;\n }\n}\n",
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"expression": {
|
||
|
|
"id": 1613,
|
||
|
|
"isConstant": false,
|
||
|
|
"isLValue": false,
|
||
|
|
"isPure": false,
|
||
|
|
"lValueRequested": false,
|
||
|
|
"leftHandSide": {
|
||
|
|
"expression": {
|
||
|
|
"id": 1609,
|
||
|
|
"name": "counter",
|
||
|
|
"nodeType": "Identifier",
|
||
|
|
"overloadedDeclarations": [],
|
||
|
|
"referencedDeclaration": 1606,
|
||
|
|
"src": "1368:7:8",
|
||
|
|
"typeDescriptions": {
|
||
|
|
"typeIdentifier": "t_struct$_Counter_$1549_storage_ptr",
|
||
|
|
"typeString": "struct Counters.Counter storage pointer"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"id": 1611,
|
||
|
|
"isConstant": false,
|
||
|
|
"isLValue": true,
|
||
|
|
"isPure": false,
|
||
|
|
"lValueRequested": true,
|
||
|
|
"memberName": "_value",
|
||
|
|
"nodeType": "MemberAccess",
|
||
|
|
"referencedDeclaration": 1548,
|
||
|
|
"src": "1368:14:8",
|
||
|
|
"typeDescriptions": {
|
||
|
|
"typeIdentifier": "t_uint256",
|
||
|
|
"typeString": "uint256"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"nodeType": "Assignment",
|
||
|
|
"operator": "=",
|
||
|
|
"rightHandSide": {
|
||
|
|
"hexValue": "30",
|
||
|
|
"id": 1612,
|
||
|
|
"isConstant": false,
|
||
|
|
"isLValue": false,
|
||
|
|
"isPure": true,
|
||
|
|
"kind": "number",
|
||
|
|
"lValueRequested": false,
|
||
|
|
"nodeType": "Literal",
|
||
|
|
"src": "1385:1:8",
|
||
|
|
"typeDescriptions": {
|
||
|
|
"typeIdentifier": "t_rational_0_by_1",
|
||
|
|
"typeString": "int_const 0"
|
||
|
|
},
|
||
|
|
"value": "0"
|
||
|
|
},
|
||
|
|
"src": "1368:18:8",
|
||
|
|
"typeDescriptions": {
|
||
|
|
"typeIdentifier": "t_uint256",
|
||
|
|
"typeString": "uint256"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"id": 1614,
|
||
|
|
"nodeType": "ExpressionStatement",
|
||
|
|
"src": "1368:18:8"
|
||
|
|
}
|
||
|
|
]
|
||
|
|
},
|
||
|
|
"id": 1616,
|
||
|
|
"implemented": true,
|
||
|
|
"kind": "function",
|
||
|
|
"modifiers": [],
|
||
|
|
"name": "reset",
|
||
|
|
"nameLocation": "1318:5:8",
|
||
|
|
"nodeType": "FunctionDefinition",
|
||
|
|
"parameters": {
|
||
|
|
"id": 1607,
|
||
|
|
"nodeType": "ParameterList",
|
||
|
|
"parameters": [
|
||
|
|
{
|
||
|
|
"constant": false,
|
||
|
|
"id": 1606,
|
||
|
|
"mutability": "mutable",
|
||
|
|
"name": "counter",
|
||
|
|
"nameLocation": "1340:7:8",
|
||
|
|
"nodeType": "VariableDeclaration",
|
||
|
|
"scope": 1616,
|
||
|
|
"src": "1324:23:8",
|
||
|
|
"stateVariable": false,
|
||
|
|
"storageLocation": "storage",
|
||
|
|
"typeDescriptions": {
|
||
|
|
"typeIdentifier": "t_struct$_Counter_$1549_storage_ptr",
|
||
|
|
"typeString": "struct Counters.Counter"
|
||
|
|
},
|
||
|
|
"typeName": {
|
||
|
|
"id": 1605,
|
||
|
|
"nodeType": "UserDefinedTypeName",
|
||
|
|
"pathNode": {
|
||
|
|
"id": 1604,
|
||
|
|
"name": "Counter",
|
||
|
|
"nodeType": "IdentifierPath",
|
||
|
|
"referencedDeclaration": 1549,
|
||
|
|
"src": "1324:7:8"
|
||
|
|
},
|
||
|
|
"referencedDeclaration": 1549,
|
||
|
|
"src": "1324:7:8",
|
||
|
|
"typeDescriptions": {
|
||
|
|
"typeIdentifier": "t_struct$_Counter_$1549_storage_ptr",
|
||
|
|
"typeString": "struct Counters.Counter"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
"visibility": "internal"
|
||
|
|
}
|
||
|
|
],
|
||
|
|
"src": "1323:25:8"
|
||
|
|
},
|
||
|
|
"returnParameters": {
|
||
|
|
"id": 1608,
|
||
|
|
"nodeType": "ParameterList",
|
||
|
|
"parameters": [],
|
||
|
|
"src": "1358:0:8"
|
||
|
|
},
|
||
|
|
"scope": 1617,
|
||
|
|
"src": "1309:84:8",
|
||
|
|
"stateMutability": "nonpayable",
|
||
|
|
"virtual": false,
|
||
|
|
"visibility": "internal"
|
||
|
|
}
|
||
|
|
],
|
||
|
|
"scope": 1618,
|
||
|
|
"src": "424:971:8",
|
||
|
|
"usedErrors": []
|
||
|
|
}
|
||
|
|
],
|
||
|
|
"src": "87:1309:8"
|
||
|
|
},
|
||
|
|
"compiler": {
|
||
|
|
"name": "solc",
|
||
|
|
"version": "0.8.11+commit.d7f03943.Emscripten.clang"
|
||
|
|
},
|
||
|
|
"networks": {},
|
||
|
|
"schemaVersion": "3.4.4",
|
||
|
|
"updatedAt": "2021-12-29T22:14:28.599Z",
|
||
|
|
"devdoc": {
|
||
|
|
"author": "Matt Condon (@shrugs)",
|
||
|
|
"details": "Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number of elements in a mapping, issuing ERC721 ids, or counting request ids. Include with `using Counters for Counters.Counter;`",
|
||
|
|
"kind": "dev",
|
||
|
|
"methods": {},
|
||
|
|
"title": "Counters",
|
||
|
|
"version": 1
|
||
|
|
},
|
||
|
|
"userdoc": {
|
||
|
|
"kind": "user",
|
||
|
|
"methods": {},
|
||
|
|
"version": 1
|
||
|
|
}
|
||
|
|
}
|