{ "contractName": "ApproveAndCall", "abi": [ { "constant": false, "inputs": [ { "internalType": "address", "name": "_token", "type": "address" }, { "internalType": "uint256", "name": "_amount", "type": "uint256" }, { "internalType": "address", "name": "_contract", "type": "address" }, { "internalType": "bytes", "name": "_callData", "type": "bytes" } ], "name": "approveAndCall", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.17+commit.d19bba13\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"_token\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"_amount\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"_contract\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"_callData\",\"type\":\"bytes\"}],\"name\":\"approveAndCall\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{},\"title\":\"Approve this contract to spend your ERC-20 tokens, and then you can call various contracts without an additional approval step.\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/home/circleci/repo/contracts/tokens/ERC20/ApproveAndCall.sol\":\"ApproveAndCall\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":2000000},\"remappings\":[]},\"sources\":{\"/home/circleci/repo/contracts/proxies/CallContract.sol\":{\"keccak256\":\"0x5b891896d85a8937da32acd5af2d4b2d3fd8f5fbae639540d54ed972d05304b4\",\"urls\":[\"bzz-raw://982e6db3cc9a612ab3ecd4a404ed15255429e857ebf0bb96b404dedb83313dc1\",\"dweb:/ipfs/Qmeh7ezyMrD4q62edq1oLdR93NuTr8GYwE4XKE62T125Mt\"]},\"/home/circleci/repo/contracts/tokens/ERC20/ApproveAndCall.sol\":{\"keccak256\":\"0xcb38adf4a5902a0500b1d9f525dcad2bb2db98b4c207122b34db9c7f4dda0ee1\",\"urls\":[\"bzz-raw://9fcdc775615ee13eea82f79c3031c15bf4ebc4864f19ccd5a59d0f2b110aa1cb\",\"dweb:/ipfs/QmWCNB5AoCBSPuryBm9CakKPbMUJQJDp4veoBLDL4PKsmq\"]},\"@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0xe5bb0f57cff3e299f360052ba50f1ea0fff046df2be070b6943e0e3c3fdad8a9\",\"urls\":[\"bzz-raw://59fd025151435da35faa8093a5c7a17de02de9d08ad27275c5cdf05050820d91\",\"dweb:/ipfs/QmQMvwEcPhoRXzbXyrdoeRtvLoifUW9Qh7Luho7bmUPRkc\"]}},\"version\":1}", "bytecode": "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", "deployedBytecode": "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", "sourceMap": "300:725:21:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;300:725:21;;;;;;;", "deployedSourceMap": "300:725:21:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;300:725:21;;;;;;;;;;;;;;;;;;;363:660;;;;;;13:3:-1;8;5:12;2:2;;;30:1;27;20:12;2:2;363:660:21;;;;;;;;;;;;;;;;;;;;;;;;;;;;;21:11:-1;5:28;;2:2;;;46:1;43;36:12;2:2;363:660:21;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;363:660:21;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;39:11;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;363:660:21;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;30:3:-1;22:6;14;1:33;99:1;81:16;;74:27;;;;-1:-1;363:660:21;;-1:-1:-1;363:660:21;;-1:-1:-1;;;;;363:660:21:i;:::-;;;553:63;;;;;;581:10;553:63;;;;601:4;553:63;;;;;;;;;;;;:27;;;;;;:63;;;;;;;;;;;;;;-1:-1:-1;553:27:21;:63;;;5:2:-1;;;;30:1;27;20:12;5:2;553:63:21;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;553:63:21;;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;;669:42:21;;;;;;:22;:42;;;;;;;;;;;;;;;:22;;;;;;:42;;;;;553:63;;669:42;;;;;;;;-1:-1:-1;669:22:21;:42;;;5:2:-1;;;;30:1;27;20:12;5:2;669:42:21;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;669:42:21;;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;717:29:21;;-1:-1:-1;717:15:21;;;733:9;744:1;717:29;:15;:29;:::i;:::-;865:39;;;;;;898:4;865:39;;;;;;850:12;;865:24;;;;;;:39;;;;;;;;;;;;;;;:24;:39;;;5:2:-1;;;;30:1;27;20:12;5:2;865:39:21;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;865:39:21;;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;865:39:21;;-1:-1:-1;913:11:21;;910:109;;968:44;;;;;;992:10;968:44;;;;;;;;;;;;:23;;;;;;:44;;;;;;;;;;;;;;-1:-1:-1;968:23:21;:44;;;5:2:-1;;;;30:1;27;20:12;5:2;968:44:21;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;968:44:21;;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;;910:109:21;363:660;;;;;:::o;398:479:7:-;505:11;786:1;757;717:9;711:16;665:2;654:9;650:18;631:9;612;599:3;585:228;575:238;;832:6;824:48;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;398:479;;;;:::o", "source": "pragma solidity ^0.5.0;\n\nimport '@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol';\nimport '../../proxies/CallContract.sol';\n\n/**\n * @title Approve this contract to spend your ERC-20 tokens, and then\n * you can call various contracts without an additional approval step.\n */\ncontract ApproveAndCall\n{\n using CallContract for address;\n\n function approveAndCall(\n address _token,\n uint _amount,\n address _contract,\n bytes memory _callData\n ) public\n {\n // First move tokens from the user into this contract\n IERC20(_token).transferFrom(msg.sender, address(this), _amount);\n\n // Approve spending and call the contract\n IERC20(_token).approve(_contract, _amount);\n _contract._call(_callData, 0);\n\n // Check for any unspent tokens, this is only applicable if the _contract is not predictable\n uint balance = IERC20(_token).balanceOf(address(this));\n if(balance > 0)\n {\n // Refund the remainder\n IERC20(_token).transfer(msg.sender, balance);\n }\n }\n}\n", "sourcePath": "/home/circleci/repo/contracts/tokens/ERC20/ApproveAndCall.sol", "ast": { "absolutePath": "/home/circleci/repo/contracts/tokens/ERC20/ApproveAndCall.sol", "exportedSymbols": { "ApproveAndCall": [ 1815 ] }, "id": 1816, "nodeType": "SourceUnit", "nodes": [ { "id": 1745, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:21" }, { "absolutePath": "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol", "file": "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol", "id": 1746, "nodeType": "ImportDirective", "scope": 1816, "sourceUnit": 2180, "src": "25:83:21", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/circleci/repo/contracts/proxies/CallContract.sol", "file": "../../proxies/CallContract.sol", "id": 1747, "nodeType": "ImportDirective", "scope": 1816, "sourceUnit": 1330, "src": "109:40:21", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": "@title Approve this contract to spend your ERC-20 tokens, and then\nyou can call various contracts without an additional approval step.", "fullyImplemented": true, "id": 1815, "linearizedBaseContracts": [ 1815 ], "name": "ApproveAndCall", "nodeType": "ContractDefinition", "nodes": [ { "id": 1750, "libraryName": { "contractScope": null, "id": 1748, "name": "CallContract", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1329, "src": "334:12:21", "typeDescriptions": { "typeIdentifier": "t_contract$_CallContract_$1329", "typeString": "library CallContract" } }, "nodeType": "UsingForDirective", "src": "328:31:21", "typeName": { "id": 1749, "name": "address", "nodeType": "ElementaryTypeName", "src": "351:7:21", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "body": { "id": 1813, "nodeType": "Block", "src": "489:534:21", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1765, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2263, "src": "581:3:21", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 1766, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "581:10:21", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1768, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2331, "src": "601:4:21", "typeDescriptions": { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } ], "id": 1767, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "593:7:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 1769, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "593:13:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1770, "name": "_amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1754, "src": "608:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1762, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "560:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1761, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "553:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1763, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "553:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1764, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transferFrom", "nodeType": "MemberAccess", "referencedDeclaration": 2162, "src": "553:27:21", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,address,uint256) external returns (bool)" } }, "id": 1771, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "553:63:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1772, "nodeType": "ExpressionStatement", "src": "553:63:21" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1777, "name": "_contract", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1756, "src": "692:9:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1778, "name": "_amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1754, "src": "703:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1774, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "676:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1773, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "669:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1775, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "669:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1776, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 2151, "src": "669:22:21", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 1779, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "669:42:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1780, "nodeType": "ExpressionStatement", "src": "669:42:21" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1784, "name": "_callData", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1758, "src": "733:9:21", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "hexValue": "30", "id": 1785, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "744:1:21", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "expression": { "argumentTypes": null, "id": 1781, "name": "_contract", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1756, "src": "717:9:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 1783, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "_call", "nodeType": "MemberAccess", "referencedDeclaration": 1305, "src": "717:15:21", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_uint256_$returns$__$bound_to$_t_address_$", "typeString": "function (address,bytes memory,uint256)" } }, "id": 1786, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "717:29:21", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1787, "nodeType": "ExpressionStatement", "src": "717:29:21" }, { "assignments": [ 1789 ], "declarations": [ { "constant": false, "id": 1789, "name": "balance", "nodeType": "VariableDeclaration", "scope": 1813, "src": "850:12:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1788, "name": "uint", "nodeType": "ElementaryTypeName", "src": "850:4:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1798, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1795, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2331, "src": "898:4:21", "typeDescriptions": { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } ], "id": 1794, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "890:7:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 1796, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "890:13:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1791, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "872:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1790, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "865:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1792, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "865:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1793, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balanceOf", "nodeType": "MemberAccess", "referencedDeclaration": 2124, "src": "865:24:21", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$returns$_t_uint256_$", "typeString": "function (address) view external returns (uint256)" } }, "id": 1797, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "865:39:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "850:54:21" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1801, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1799, "name": "balance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1789, "src": "913:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1800, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "923:1:21", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "913:11:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1812, "nodeType": "IfStatement", "src": "910:109:21", "trueBody": { "id": 1811, "nodeType": "Block", "src": "930:89:21", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1806, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2263, "src": "992:3:21", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 1807, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "992:10:21", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 1808, "name": "balance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1789, "src": "1004:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1803, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "975:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1802, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "968:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1804, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "968:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1805, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 2133, "src": "968:23:21", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 1809, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "968:44:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1810, "nodeType": "ExpressionStatement", "src": "968:44:21" } ] } } ] }, "documentation": null, "id": 1814, "implemented": true, "kind": "function", "modifiers": [], "name": "approveAndCall", "nodeType": "FunctionDefinition", "parameters": { "id": 1759, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1752, "name": "_token", "nodeType": "VariableDeclaration", "scope": 1814, "src": "392:14:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1751, "name": "address", "nodeType": "ElementaryTypeName", "src": "392:7:21", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1754, "name": "_amount", "nodeType": "VariableDeclaration", "scope": 1814, "src": "412:12:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1753, "name": "uint", "nodeType": "ElementaryTypeName", "src": "412:4:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1756, "name": "_contract", "nodeType": "VariableDeclaration", "scope": 1814, "src": "430:17:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1755, "name": "address", "nodeType": "ElementaryTypeName", "src": "430:7:21", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1758, "name": "_callData", "nodeType": "VariableDeclaration", "scope": 1814, "src": "453:22:21", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1757, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "453:5:21", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "386:93:21" }, "returnParameters": { "id": 1760, "nodeType": "ParameterList", "parameters": [], "src": "489:0:21" }, "scope": 1815, "src": "363:660:21", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 1816, "src": "300:725:21" } ], "src": "0:1026:21" }, "legacyAST": { "absolutePath": "/home/circleci/repo/contracts/tokens/ERC20/ApproveAndCall.sol", "exportedSymbols": { "ApproveAndCall": [ 1815 ] }, "id": 1816, "nodeType": "SourceUnit", "nodes": [ { "id": 1745, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:21" }, { "absolutePath": "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol", "file": "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol", "id": 1746, "nodeType": "ImportDirective", "scope": 1816, "sourceUnit": 2180, "src": "25:83:21", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/circleci/repo/contracts/proxies/CallContract.sol", "file": "../../proxies/CallContract.sol", "id": 1747, "nodeType": "ImportDirective", "scope": 1816, "sourceUnit": 1330, "src": "109:40:21", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": "@title Approve this contract to spend your ERC-20 tokens, and then\nyou can call various contracts without an additional approval step.", "fullyImplemented": true, "id": 1815, "linearizedBaseContracts": [ 1815 ], "name": "ApproveAndCall", "nodeType": "ContractDefinition", "nodes": [ { "id": 1750, "libraryName": { "contractScope": null, "id": 1748, "name": "CallContract", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1329, "src": "334:12:21", "typeDescriptions": { "typeIdentifier": "t_contract$_CallContract_$1329", "typeString": "library CallContract" } }, "nodeType": "UsingForDirective", "src": "328:31:21", "typeName": { "id": 1749, "name": "address", "nodeType": "ElementaryTypeName", "src": "351:7:21", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "body": { "id": 1813, "nodeType": "Block", "src": "489:534:21", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1765, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2263, "src": "581:3:21", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 1766, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "581:10:21", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1768, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2331, "src": "601:4:21", "typeDescriptions": { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } ], "id": 1767, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "593:7:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 1769, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "593:13:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1770, "name": "_amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1754, "src": "608:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1762, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "560:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1761, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "553:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1763, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "553:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1764, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transferFrom", "nodeType": "MemberAccess", "referencedDeclaration": 2162, "src": "553:27:21", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,address,uint256) external returns (bool)" } }, "id": 1771, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "553:63:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1772, "nodeType": "ExpressionStatement", "src": "553:63:21" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1777, "name": "_contract", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1756, "src": "692:9:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1778, "name": "_amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1754, "src": "703:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1774, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "676:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1773, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "669:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1775, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "669:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1776, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 2151, "src": "669:22:21", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 1779, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "669:42:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1780, "nodeType": "ExpressionStatement", "src": "669:42:21" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1784, "name": "_callData", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1758, "src": "733:9:21", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "hexValue": "30", "id": 1785, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "744:1:21", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "expression": { "argumentTypes": null, "id": 1781, "name": "_contract", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1756, "src": "717:9:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 1783, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "_call", "nodeType": "MemberAccess", "referencedDeclaration": 1305, "src": "717:15:21", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_uint256_$returns$__$bound_to$_t_address_$", "typeString": "function (address,bytes memory,uint256)" } }, "id": 1786, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "717:29:21", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1787, "nodeType": "ExpressionStatement", "src": "717:29:21" }, { "assignments": [ 1789 ], "declarations": [ { "constant": false, "id": 1789, "name": "balance", "nodeType": "VariableDeclaration", "scope": 1813, "src": "850:12:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1788, "name": "uint", "nodeType": "ElementaryTypeName", "src": "850:4:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1798, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1795, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2331, "src": "898:4:21", "typeDescriptions": { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_ApproveAndCall_$1815", "typeString": "contract ApproveAndCall" } ], "id": 1794, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "890:7:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 1796, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "890:13:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1791, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "872:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1790, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "865:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1792, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "865:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1793, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balanceOf", "nodeType": "MemberAccess", "referencedDeclaration": 2124, "src": "865:24:21", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$returns$_t_uint256_$", "typeString": "function (address) view external returns (uint256)" } }, "id": 1797, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "865:39:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "850:54:21" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1801, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1799, "name": "balance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1789, "src": "913:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1800, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "923:1:21", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "913:11:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1812, "nodeType": "IfStatement", "src": "910:109:21", "trueBody": { "id": 1811, "nodeType": "Block", "src": "930:89:21", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1806, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2263, "src": "992:3:21", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 1807, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "992:10:21", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 1808, "name": "balance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1789, "src": "1004:7:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1803, "name": "_token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1752, "src": "975:6:21", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1802, "name": "IERC20", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2179, "src": "968:6:21", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC20_$2179_$", "typeString": "type(contract IERC20)" } }, "id": 1804, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "968:14:21", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$2179", "typeString": "contract IERC20" } }, "id": 1805, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 2133, "src": "968:23:21", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 1809, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "968:44:21", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1810, "nodeType": "ExpressionStatement", "src": "968:44:21" } ] } } ] }, "documentation": null, "id": 1814, "implemented": true, "kind": "function", "modifiers": [], "name": "approveAndCall", "nodeType": "FunctionDefinition", "parameters": { "id": 1759, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1752, "name": "_token", "nodeType": "VariableDeclaration", "scope": 1814, "src": "392:14:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1751, "name": "address", "nodeType": "ElementaryTypeName", "src": "392:7:21", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1754, "name": "_amount", "nodeType": "VariableDeclaration", "scope": 1814, "src": "412:12:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1753, "name": "uint", "nodeType": "ElementaryTypeName", "src": "412:4:21", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1756, "name": "_contract", "nodeType": "VariableDeclaration", "scope": 1814, "src": "430:17:21", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1755, "name": "address", "nodeType": "ElementaryTypeName", "src": "430:7:21", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1758, "name": "_callData", "nodeType": "VariableDeclaration", "scope": 1814, "src": "453:22:21", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1757, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "453:5:21", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "386:93:21" }, "returnParameters": { "id": 1760, "nodeType": "ParameterList", "parameters": [], "src": "489:0:21" }, "scope": 1815, "src": "363:660:21", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 1816, "src": "300:725:21" } ], "src": "0:1026:21" }, "compiler": { "name": "solc", "version": "0.5.17+commit.d19bba13.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.0.23", "updatedAt": "2020-04-07T20:17:34.961Z", "devdoc": { "methods": {}, "title": "Approve this contract to spend your ERC-20 tokens, and then you can call various contracts without an additional approval step." }, "userdoc": { "methods": {} } }