{ "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "spender", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "spender", "type": "address" } ], "name": "allowance", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "approve", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "account", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "totalSupply", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "recipient", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transfer", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "sender", "type": "address" }, { "internalType": "address", "name": "recipient", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" } ], "bytecode": { "object": "0x", "sourceMap": "", "linkReferences": {} }, "deployedBytecode": { "object": "0x", "sourceMap": "", "linkReferences": {} }, "methodIdentifiers": { "allowance(address,address)": "dd62ed3e", "approve(address,uint256)": "095ea7b3", "balanceOf(address)": "70a08231", "totalSupply()": "18160ddd", "transfer(address,uint256)": "a9059cbb", "transferFrom(address,address,uint256)": "23b872dd" }, "ast": { "absolutePath": "node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol", "id": 27518, "exportedSymbols": { "IERC20": [ 27517 ] }, "nodeType": "SourceUnit", "src": "33:2671:27", "nodes": [ { "id": 27441, "nodeType": "PragmaDirective", "src": "33:31:27", "literals": [ "solidity", ">=", "0.6", ".0", "<", "0.8", ".0" ] }, { "id": 27517, "nodeType": "ContractDefinition", "src": "137:2566:27", "nodes": [ { "id": 27448, "nodeType": "FunctionDefinition", "src": "231:55:27", "documentation": { "id": 27443, "nodeType": "StructuredDocumentation", "src": "160:66:27", "text": " @dev Returns the amount of tokens in existence." }, "functionSelector": "18160ddd", "implemented": false, "kind": "function", "modifiers": [], "name": "totalSupply", "parameters": { "id": 27444, "nodeType": "ParameterList", "parameters": [], "src": "251:2:27" }, "returnParameters": { "id": 27447, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27446, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 27448, "src": "277:7:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27445, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "277:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "276:9:27" }, "scope": 27517, "stateMutability": "view", "virtual": false, "visibility": "external" }, { "id": 27456, "nodeType": "FunctionDefinition", "src": "369:68:27", "documentation": { "id": 27449, "nodeType": "StructuredDocumentation", "src": "292:72:27", "text": " @dev Returns the amount of tokens owned by `account`." }, "functionSelector": "70a08231", "implemented": false, "kind": "function", "modifiers": [], "name": "balanceOf", "parameters": { "id": 27452, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27451, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "scope": 27456, "src": "388:15:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27450, "name": "address", "nodeType": "ElementaryTypeName", "src": "388:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "387:17:27" }, "returnParameters": { "id": 27455, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27454, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 27456, "src": "428:7:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27453, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "428:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "427:9:27" }, "scope": 27517, "stateMutability": "view", "virtual": false, "visibility": "external" }, { "id": 27466, "nodeType": "FunctionDefinition", "src": "657:77:27", "documentation": { "id": 27457, "nodeType": "StructuredDocumentation", "src": "443:209:27", "text": " @dev Moves `amount` tokens from the caller's account to `recipient`.\n Returns a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event." }, "functionSelector": "a9059cbb", "implemented": false, "kind": "function", "modifiers": [], "name": "transfer", "parameters": { "id": 27462, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27459, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 27466, "src": "675:17:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27458, "name": "address", "nodeType": "ElementaryTypeName", "src": "675:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27461, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 27466, "src": "694:14:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27460, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "694:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "674:35:27" }, "returnParameters": { "id": 27465, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27464, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 27466, "src": "728:4:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 27463, "name": "bool", "nodeType": "ElementaryTypeName", "src": "728:4:27", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "727:6:27" }, "scope": 27517, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "id": 27476, "nodeType": "FunctionDefinition", "src": "1009:83:27", "documentation": { "id": 27467, "nodeType": "StructuredDocumentation", "src": "740:264:27", "text": " @dev Returns the remaining number of tokens that `spender` will be\n allowed to spend on behalf of `owner` through {transferFrom}. This is\n zero by default.\n This value changes when {approve} or {transferFrom} are called." }, "functionSelector": "dd62ed3e", "implemented": false, "kind": "function", "modifiers": [], "name": "allowance", "parameters": { "id": 27472, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27469, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 27476, "src": "1028:13:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27468, "name": "address", "nodeType": "ElementaryTypeName", "src": "1028:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27471, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 27476, "src": "1043:15:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27470, "name": "address", "nodeType": "ElementaryTypeName", "src": "1043:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1027:32:27" }, "returnParameters": { "id": 27475, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27474, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 27476, "src": "1083:7:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27473, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1083:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1082:9:27" }, "scope": 27517, "stateMutability": "view", "virtual": false, "visibility": "external" }, { "id": 27486, "nodeType": "FunctionDefinition", "src": "1745:74:27", "documentation": { "id": 27477, "nodeType": "StructuredDocumentation", "src": "1098:642:27", "text": " @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n Returns a boolean value indicating whether the operation succeeded.\n IMPORTANT: Beware that changing an allowance with this method brings the risk\n that someone may use both the old and the new allowance by unfortunate\n transaction ordering. One possible solution to mitigate this race\n condition is to first reduce the spender's allowance to 0 and set the\n desired value afterwards:\n https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n Emits an {Approval} event." }, "functionSelector": "095ea7b3", "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "parameters": { "id": 27482, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27479, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 27486, "src": "1762:15:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27478, "name": "address", "nodeType": "ElementaryTypeName", "src": "1762:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27481, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 27486, "src": "1779:14:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27480, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1779:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1761:33:27" }, "returnParameters": { "id": 27485, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27484, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 27486, "src": "1813:4:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 27483, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1813:4:27", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "1812:6:27" }, "scope": 27517, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "id": 27498, "nodeType": "FunctionDefinition", "src": "2126:97:27", "documentation": { "id": 27487, "nodeType": "StructuredDocumentation", "src": "1825:296:27", "text": " @dev Moves `amount` tokens from `sender` to `recipient` using the\n allowance mechanism. `amount` is then deducted from the caller's\n allowance.\n Returns a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event." }, "functionSelector": "23b872dd", "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "parameters": { "id": 27494, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27489, "mutability": "mutable", "name": "sender", "nodeType": "VariableDeclaration", "scope": 27498, "src": "2148:14:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27488, "name": "address", "nodeType": "ElementaryTypeName", "src": "2148:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27491, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 27498, "src": "2164:17:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27490, "name": "address", "nodeType": "ElementaryTypeName", "src": "2164:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27493, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 27498, "src": "2183:14:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27492, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2183:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2147:51:27" }, "returnParameters": { "id": 27497, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27496, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 27498, "src": "2217:4:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 27495, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2217:4:27", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "2216:6:27" }, "scope": 27517, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "id": 27507, "nodeType": "EventDefinition", "src": "2392:72:27", "anonymous": false, "documentation": { "id": 27499, "nodeType": "StructuredDocumentation", "src": "2229:158:27", "text": " @dev Emitted when `value` tokens are moved from one account (`from`) to\n another (`to`).\n Note that `value` may be zero." }, "name": "Transfer", "parameters": { "id": 27506, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27501, "indexed": true, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 27507, "src": "2407:20:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27500, "name": "address", "nodeType": "ElementaryTypeName", "src": "2407:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27503, "indexed": true, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 27507, "src": "2429:18:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27502, "name": "address", "nodeType": "ElementaryTypeName", "src": "2429:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27505, "indexed": false, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 27507, "src": "2449:13:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27504, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2449:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2406:57:27" } }, { "id": 27516, "nodeType": "EventDefinition", "src": "2623:78:27", "anonymous": false, "documentation": { "id": 27508, "nodeType": "StructuredDocumentation", "src": "2470:148:27", "text": " @dev Emitted when the allowance of a `spender` for an `owner` is set by\n a call to {approve}. `value` is the new allowance." }, "name": "Approval", "parameters": { "id": 27515, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 27510, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 27516, "src": "2638:21:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27509, "name": "address", "nodeType": "ElementaryTypeName", "src": "2638:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27512, "indexed": true, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 27516, "src": "2661:23:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 27511, "name": "address", "nodeType": "ElementaryTypeName", "src": "2661:7:27", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 27514, "indexed": false, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 27516, "src": "2686:13:27", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 27513, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2686:7:27", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2637:63:27" } } ], "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "interface", "documentation": { "id": 27442, "nodeType": "StructuredDocumentation", "src": "66:70:27", "text": " @dev Interface of the ERC20 standard as defined in the EIP." }, "fullyImplemented": false, "linearizedBaseContracts": [ 27517 ], "name": "IERC20", "scope": 27518 } ], "license": "MIT" }, "id": 27 }