{ "fileName": "SafeERC20.sol", "contractName": "SafeERC20", "source": "pragma solidity ^0.6.0;\n\nimport \"./IERC20.sol\";\nimport \"../../math/SafeMath.sol\";\nimport \"../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using SafeMath for uint256;\n using Address for address;\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n // solhint-disable-next-line max-line-length\n require((value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves.\n\n // A Solidity high level call has three parts:\n // 1. The target address is checked to verify it contains contract code\n // 2. The call itself is made, and success asserted\n // 3. The return value is decoded, which in turn checks the size of the returned data.\n // solhint-disable-next-line max-line-length\n require(address(token).isContract(), \"SafeERC20: call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = address(token).call(data);\n require(success, \"SafeERC20: low-level call failed\");\n\n if (returndata.length > 0) { // Return data is optional\n // solhint-disable-next-line max-line-length\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n", "sourcePath": "contracts/token/ERC20/SafeERC20.sol", "sourceMap": "574:3195:84:-:0;;132:2:-1;166:7;155:9;146:7;137:37;255:7;249:14;246:1;241:23;235:4;232:33;222:2;;269:9;222:2;293:9;290:1;283:20;323:4;314:7;306:22;347:7;338;331:24", "deployedSourceMap": "574:3195:84:-:0;;;;;;12:1:-1;9;2:12", "abi": [], "ast": { "absolutePath": "contracts/token/ERC20/SafeERC20.sol", "exportedSymbols": { "SafeERC20": [ 11090 ] }, "id": 11091, "nodeType": "SourceUnit", "nodes": [ { "id": 10864, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:84" }, { "absolutePath": "contracts/token/ERC20/IERC20.sol", "file": "./IERC20.sol", "id": 10865, "nodeType": "ImportDirective", "scope": 11091, "sourceUnit": 10863, "src": "25:22:84", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 10866, "nodeType": "ImportDirective", "scope": 11091, "sourceUnit": 3153, "src": "48:33:84", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 10867, "nodeType": "ImportDirective", "scope": 11091, "sourceUnit": 13938, "src": "82:33:84", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 10868, "nodeType": "StructuredDocumentation", "src": "117:456:84", "text": "@title SafeERC20\n@dev Wrappers around ERC20 operations that throw on failure (when the token\ncontract returns false). Tokens that return no value (and instead revert or\nthrow on failure) are also supported, non-reverting calls are assumed to be\nsuccessful.\nTo use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,\nwhich allows you to call the safe operations as `token.safeTransfer(...)`, etc." }, "fullyImplemented": true, "id": 11090, "linearizedBaseContracts": [ 11090 ], "name": "SafeERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 10871, "libraryName": { "contractScope": null, "id": 10869, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3152, "src": "604:8:84", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$3152", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "598:27:84", "typeName": { "id": 10870, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "617:7:84", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 10874, "libraryName": { "contractScope": null, "id": 10872, "name": "Address", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 13937, "src": "636:7:84", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$13937", "typeString": "library Address" } }, "nodeType": "UsingForDirective", "src": "630:26:84", "typeName": { "id": 10873, "name": "address", "nodeType": "ElementaryTypeName", "src": "648:7:84", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "body": { "id": 10895, "nodeType": "Block", "src": "734:103:84", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 10884, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10876, "src": "764:5:84", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 10887, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10876, "src": "794:5:84", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" } }, "id": 10888, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 10811, "src": "794:14:84", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 10889, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "794:23:84", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "argumentTypes": null, "id": 10890, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10878, "src": "819:2:84", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 10891, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10880, "src": "823:5:84", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 10885, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "771:3:84", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 10886, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "771:22:84", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 10892, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "771:58:84", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 10883, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11089, "src": "744:19:84", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$10862_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 10893, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "744:86:84", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 10894, "nodeType": "ExpressionStatement", "src": "744:86:84" } ] }, "documentation": null, "id": 10896, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransfer", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 10881, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10876, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10896, "src": "684:12:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" }, "typeName": { "contractScope": null, "id": 10875, "name": "IERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10862, "src": "684:6:84", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 10878, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10896, "src": "698:10:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 10877, "name": "address", "nodeType": "ElementaryTypeName", "src": "698:7:84", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 10880, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10896, "src": "710:13:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 10879, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "710:7:84", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "683:41:84" }, "returnParameters": { "id": 10882, "nodeType": "ParameterList", "parameters": [], "src": "734:0:84" }, "scope": 11090, "src": "662:175:84", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 10920, "nodeType": "Block", "src": "933:113:84", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 10908, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10898, "src": "963:5:84", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 10911, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10898, "src": "993:5:84", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" } }, "id": 10912, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transferFrom", "nodeType": "MemberAccess", "referencedDeclaration": 10843, "src": "993:18:84", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,address,uint256) external returns (bool)" } }, "id": 10913, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "993:27:84", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "argumentTypes": null, "id": 10914, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10900, "src": "1022:4:84", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 10915, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10902, "src": "1028:2:84", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 10916, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10904, "src": "1032:5:84", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 10909, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "970:3:84", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 10910, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "970:22:84", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 10917, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "970:68:84", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 10907, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11089, "src": "943:19:84", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$10862_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 10918, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "943:96:84", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 10919, "nodeType": "ExpressionStatement", "src": "943:96:84" } ] }, "documentation": null, "id": 10921, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 10905, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10898, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10921, "src": "869:12:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" }, "typeName": { "contractScope": null, "id": 10897, "name": "IERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10862, "src": "869:6:84", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$10862", "typeString": "contract IERC20" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 10900, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10921, "src": "883:12:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 10899, "name": "address", "nodeType": "ElementaryTypeName", "src": "883:7:84", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 10902, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10921, "src": "897:10:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 10901, "name": "address", "nodeType": "ElementaryTypeName", "src": "897:7:84", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 10904, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10921, "src": "909:13:84", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 10903, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "909:7:84", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "868:55:84" }, "returnParameters": { "id": 10906, "nodeType": "ParameterList", "parameters": [], "src": "933:0:84" }, "scope": 11090, "src": "843:203:84", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 10962, "nodeType": "Block", "src": "1128:537:84", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 10946, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 10933, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 10931, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10927, "src": "1417:5:84", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 10932, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1426:1:84", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1417:10:84", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 10934, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1416:12:84", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 10944, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 10939, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -28, "src": "1457:4:84", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$11090", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$11090", "typeString": "library SafeERC20" } ], "id": 10938, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1449:7:84", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 10937, "name": "address", "nodeType": "ElementaryTypeName", "src": "1449:7:84", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 10940, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1449:13:84", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } 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