@windfallswap/periphery

{ "contractName": "ERC20", "abi": [ { "inputs": [ { "internalType": "uint256", "name": "_totalSupply", "type": "uint256" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "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": [], "name": "DOMAIN_SEPARATOR", "outputs": [ { "internalType": "bytes32", "name": "", "type": "bytes32" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "PERMIT_TYPEHASH", "outputs": [ { "internalType": "bytes32", "name": "", "type": "bytes32" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "", "type": "address" }, { "internalType": "address", "name": "", "type": "address" } ], "name": "allowance", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "decimals", "outputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "", "type": "address" } ], "name": "nonces", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "symbol", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "totalSupply", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "approve", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" }, { "internalType": "uint256", "name": "deadline", "type": "uint256" }, { "internalType": "uint8", "name": "v", "type": "uint8" }, { "internalType": "bytes32", "name": "r", "type": "bytes32" }, { "internalType": "bytes32", "name": "s", "type": "bytes32" } ], "name": "permit", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.6.6+commit.6c089d02\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_totalSupply\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"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\":[],\"name\":\"DOMAIN_SEPARATOR\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"PERMIT_TYPEHASH\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"nonces\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"deadline\",\"type\":\"uint256\"},{\"internalType\":\"uint8\",\"name\":\"v\",\"type\":\"uint8\"},{\"internalType\":\"bytes32\",\"name\":\"r\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"s\",\"type\":\"bytes32\"}],\"name\":\"permit\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/D/defi/windfall/windfallswap-periphery/contracts/test/ERC20.sol\":\"ERC20\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":999999},\"remappings\":[]},\"sources\":{\"/D/defi/windfall/windfallswap-periphery/contracts/libraries/SafeMath.sol\":{\"keccak256\":\"0x977f38b601109ee7a0c1b70a32e08b7aecf5b4672bdea39fa6b7fec810943b80\",\"urls\":[\"bzz-raw://50296b94e299cd690f4a7966a93ac6ac58128080b0a14fdb1c2e07d71b50930c\",\"dweb:/ipfs/QmSCqtcNbmcXUekQk2NYGDQcWt34sASe6ru1v2FLBX9coc\"]},\"/D/defi/windfall/windfalls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"source": "pragma solidity =0.6.6;\r\n\r\nimport '../libraries/SafeMath.sol';\r\n\r\ncontract ERC20 {\r\n using SafeMath for uint;\r\n\r\n string public constant name = 'Test Token';\r\n string public constant symbol = 'TT';\r\n uint8 public constant decimals = 18;\r\n uint public totalSupply;\r\n mapping(address => uint) public balanceOf;\r\n mapping(address => mapping(address => uint)) public allowance;\r\n\r\n bytes32 public DOMAIN_SEPARATOR;\r\n // keccak256(\"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)\");\r\n bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;\r\n mapping(address => uint) public nonces;\r\n\r\n event Approval(address indexed owner, address indexed spender, uint value);\r\n event Transfer(address indexed from, address indexed to, uint value);\r\n\r\n constructor(uint _totalSupply) public {\r\n uint chainId;\r\n assembly {\r\n chainId := chainid()\r\n }\r\n DOMAIN_SEPARATOR = keccak256(\r\n abi.encode(\r\n keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),\r\n keccak256(bytes(name)),\r\n keccak256(bytes('1')),\r\n chainId,\r\n address(this)\r\n )\r\n );\r\n _mint(msg.sender, _totalSupply);\r\n }\r\n\r\n function _mint(address to, uint value) internal {\r\n totalSupply = totalSupply.add(value);\r\n balanceOf[to] = balanceOf[to].add(value);\r\n emit Transfer(address(0), to, value);\r\n }\r\n\r\n function _burn(address from, uint value) internal {\r\n balanceOf[from] = balanceOf[from].sub(value);\r\n totalSupply = totalSupply.sub(value);\r\n emit Transfer(from, address(0), value);\r\n }\r\n\r\n function _approve(address owner, address spender, uint value) private {\r\n allowance[owner][spender] = value;\r\n emit Approval(owner, spender, value);\r\n }\r\n\r\n function _transfer(address from, address to, uint value) private {\r\n balanceOf[from] = balanceOf[from].sub(value);\r\n balanceOf[to] = balanceOf[to].add(value);\r\n emit Transfer(from, to, value);\r\n }\r\n\r\n function approve(address spender, uint value) external returns (bool) {\r\n _approve(msg.sender, spender, value);\r\n return true;\r\n }\r\n\r\n function transfer(address to, uint value) external returns (bool) {\r\n _transfer(msg.sender, to, value);\r\n return true;\r\n }\r\n\r\n function transferFrom(address from, address to, uint value) external returns (bool) {\r\n if (allowance[from][msg.sender] != uint(-1)) {\r\n allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);\r\n }\r\n _transfer(from, to, value);\r\n return true;\r\n }\r\n\r\n function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {\r\n require(deadline >= block.timestamp, 'EXPIRED');\r\n bytes32 digest = keccak256(\r\n abi.encodePacked(\r\n '\\x19\\x01',\r\n DOMAIN_SEPARATOR,\r\n keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))\r\n )\r\n );\r\n address recoveredAddress = ecrecover(digest, v, r, s);\r\n require(recoveredAddress != address(0) && recoveredAddress == owner, 'INVALID_SIGNATURE');\r\n _approve(owner, spender, value);\r\n }\r\n}\r\n", "sourcePath": "D:/defi/windfall/windfallswap-periphery/contracts/test/ERC20.sol", "ast": { "absolutePath": "/D/defi/windfall/windfallswap-periphery/contracts/test/ERC20.sol", "exportedSymbols": { "ERC20": [ 4278 ] }, "id": 4279, "nodeType": "SourceUnit", "nodes": [ { "id": 3883, "literals": [ "solidity", "=", "0.6", ".6" ], "nodeType": "PragmaDirective", "src": "0:23:10" }, { "absolutePath": "/D/defi/windfall/windfallswap-periphery/contracts/libraries/SafeMath.sol", "file": "../libraries/SafeMath.sol", "id": 3884, "nodeType": "ImportDirective", "scope": 4279, "sourceUnit": 2888, "src": "27:35:10", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "id": 4278, "linearizedBaseContracts": [ 4278 ], "name": "ERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 3887, "libraryName": { "contractScope": null, "id": 3885, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2887, "src": "94:8:10", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$2887", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "88:24:10", "typeName": { "id": 3886, "name": "uint", "nodeType": "ElementaryTypeName", "src": "107:4:10", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": true, "functionSelector": "06fdde03", "id": 3890, "mutability": "constant", "name": "name", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "120:42:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 3888, "name": "string", "nodeType": "ElementaryTypeName", "src": "120:6:10", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": { "argumentTypes": null, "hexValue": "5465737420546f6b656e", "id": 3889, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "150:12:10", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_81e8ad438398ab0d4a2a7ecb159490c091bb27c67ace5181f70084e30fadaea2", "typeString": "literal_string \"Test Token\"" }, "value": "Test Token" }, "visibility": "public" }, { "constant": true, "functionSelector": "95d89b41", "id": 3893, "mutability": "constant", "name": "symbol", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "169:36:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 3891, "name": "string", "nodeType": "ElementaryTypeName", "src": "169:6:10", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": { "argumentTypes": null, "hexValue": "5454", "id": 3892, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "201:4:10", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_2ac50a34f0da9360cfd7e529a34ccdaa61aa98e2a0ac0928bf981af8e73352ba", "typeString": "literal_string \"TT\"" }, "value": "TT" }, "visibility": "public" }, { "constant": true, "functionSelector": "313ce567", "id": 3896, "mutability": "constant", "name": "decimals", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "212:35:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 3894, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "212:5:10", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "argumentTypes": null, "hexValue": "3138", "id": 3895, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "245:2:10", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_18_by_1", "typeString": "int_const 18" }, "value": "18" }, "visibility": "public" }, { "constant": false, "functionSelector": "18160ddd", "id": 3898, "mutability": "mutable", "name": "totalSupply", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "254:24:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3897, "name": "uint", "nodeType": "ElementaryTypeName", "src": "254:4:10", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "public" }, { "constant": false, "functionSelector": "70a08231", "id": 3902, "mutability": "mutable", "name": "balanceOf", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "285:41:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 3901, "keyType": { "id": 3899, "name": "address", "nodeType": "ElementaryTypeName", "src": "293:7:10", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "285:24:10", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 3900, "name": "uint", "nodeType": "ElementaryTypeName", "src": "304:4:10", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "public" }, { "constant": false, "functionSelector": "dd62ed3e", "id": 3908, "mutability": "mutable", "name": "allowance", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "333:61:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 3907, "keyType": { "id": 3903, "name": "address", "nodeType": "ElementaryTypeName", "src": "341:7:10", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "333:44:10", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 3906, "keyType": { "id": 3904, "name": "address", "nodeType": "ElementaryTypeName", "src": "360:7:10", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "352:24:10", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 3905, "name": "uint", "nodeType": "ElementaryTypeName", "src": "371:4:10", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "public" }, { "constant": false, "functionSelector": "3644e515", "id": 3910, "mutability": "mutable", "name": "DOMAIN_SEPARATOR", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "403:31:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 3909, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "403:7:10", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "public" }, { "constant": true, "functionSelector": "30adf81f", "id": 3913, "mutability": "constant", "name": "PERMIT_TYPEHASH", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "546:108:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 3911, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "546:7:10", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": { "argumentTypes": null, "hexValue": "307836653731656461653132623162393766346431663630333730666566313031303566613266616165303132363131346131363963363438343564363132366339", "id": 3912, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "588:66:10", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_49955707469362902507454157297736832118868343942642399513960811609542965143241_by_1", "typeString": "int_const 4995...(69 digits omitted)...3241" }, "value": "0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9" }, "visibility": "public" }, { "constant": false, "functionSelector": "7ecebe00", "id": 3917, "mutability": "mutable", "name": "nonces", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4278, "src": "661:38:10", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 3916, "keyType": { "id": 3914, "name": "address", "nodeType": "ElementaryTypeName", "src": "669:7:10", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "661:24:10", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 3915, "name": "uint", "nodeType": "ElementaryTypeName", "src": "680:4:10", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "public" }, { "anonymous": false, "documentation": null, "id": 3925, "name": "Approval", "nodeType": "EventDefinition", "parameters": { "id": 3924, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3919, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 3925, "src": "723:21:10", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3918, "name": "address", "nodeType": "ElementaryTypeName", "src": "723:7:10", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3921, "indexed": true, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "overrides": null, "scope": 3925, "src": "746:23:10", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address",