{ "fileName": "Create2.sol", "contractName": "Create2", "source": "pragma solidity ^0.6.0;\n\n/**\n * @dev Helper to make usage of the `CREATE2` EVM opcode easier and safer.\n * `CREATE2` can be used to compute in advance the address where a smart\n * contract will be deployed, which allows for interesting new mechanisms known\n * as 'counterfactual interactions'.\n *\n * See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more\n * information.\n */\nlibrary Create2 {\n /**\n * @dev Deploys a contract using `CREATE2`. The address where the contract\n * will be deployed can be known in advance via {computeAddress}.\n *\n * The bytecode for a contract can be obtained from Solidity with\n * `type(contractName).creationCode`.\n *\n * Requirements:\n *\n * - `bytecode` must not be empty.\n * - `salt` must have not been used for `bytecode` already.\n * - the factory must have a balance of at least `amount`.\n * - if `amount` is non-zero, `bytecode` must have a `payable` constructor.\n */\n function deploy(uint256 amount, bytes32 salt, bytes memory bytecode) internal returns (address) {\n address addr;\n require(address(this).balance >= amount, \"Create2: insufficient balance\");\n require(bytecode.length != 0, \"Create2: bytecode length is zero\");\n // solhint-disable-next-line no-inline-assembly\n assembly {\n addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt)\n }\n require(addr != address(0), \"Create2: Failed on deploy\");\n return addr;\n }\n\n /**\n * @dev Returns the address where a contract will be stored if deployed via {deploy}. Any change in the\n * `bytecodeHash` or `salt` will result in a new destination address.\n */\n function computeAddress(bytes32 salt, bytes32 bytecodeHash) internal view returns (address) {\n return computeAddress(salt, bytecodeHash, address(this));\n }\n\n /**\n * @dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at\n * `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}.\n */\n function computeAddress(bytes32 salt, bytes32 bytecodeHash, address deployer) internal pure returns (address) {\n bytes32 _data = keccak256(\n abi.encodePacked(bytes1(0xff), deployer, salt, bytecodeHash)\n );\n return address(bytes20(_data << 96));\n }\n}\n", "sourcePath": "contracts/utils/Create2.sol", "sourceMap": "393:2018:101:-: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": "393:2018:101:-:0;;;;;;12:1:-1;9;2:12", "abi": [], "ast": { "absolutePath": "contracts/utils/Create2.sol", "exportedSymbols": { "Create2": [ 14182 ] }, "id": 14183, "nodeType": "SourceUnit", "nodes": [ { "id": 14074, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:101" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 14075, "nodeType": "StructuredDocumentation", "src": "25:367:101", "text": "@dev Helper to make usage of the `CREATE2` EVM opcode easier and safer.\n`CREATE2` can be used to compute in advance the address where a smart\ncontract will be deployed, which allows for interesting new mechanisms known\nas 'counterfactual interactions'.\n * See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more\ninformation." }, "fullyImplemented": true, "id": 14182, "linearizedBaseContracts": [ 14182 ], "name": "Create2", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 14122, "nodeType": "Block", "src": "1076:439:101", "statements": [ { "assignments": [ 14088 ], "declarations": [ { "constant": false, "id": 14088, "mutability": "mutable", "name": "addr", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14122, "src": "1086:12:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": 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The address where the contract\nwill be deployed can be known in advance via {computeAddress}.\n * The bytecode for a contract can be obtained from Solidity with\n`type(contractName).creationCode`.\n * Requirements:\n * - `bytecode` must not be empty.\n- `salt` must have not been used for `bytecode` already.\n- the factory must have a balance of at least `amount`.\n- if `amount` is non-zero, `bytecode` must have a `payable` constructor." }, "id": 14123, "implemented": true, "kind": "function", "modifiers": [], "name": "deploy", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 14083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14078, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14123, "src": "996:14:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 14077, "name": 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where a contract will be stored if deployed via {deploy}. Any change in the\n`bytecodeHash` or `salt` will result in a new destination address." }, "id": 14143, "implemented": true, "kind": "function", "modifiers": [], "name": "computeAddress", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 14129, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14126, "mutability": "mutable", "name": "salt", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14143, "src": "1743:12:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14125, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1743:7:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14128, "mutability": "mutable", "name": "bytecodeHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14143, "src": "1757:20:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14127, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1757:7:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1742:36:101" }, "returnParameters": { "id": 14132, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14131, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14143, "src": "1802:7:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14130, "name": "address", "nodeType": "ElementaryTypeName", "src": "1802:7:101", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1801:9:101" }, "scope": 14182, "src": "1719:165:101", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 14180, "nodeType": "Block", "src": "2237:172:101", "statements": [ { "assignments": [ 14156 ], "declarations": [ { "constant": false, "id": 14156, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14180, "src": "2247:13:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14155, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2247:7:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 14169, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30786666", "id": 14162, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2310:4:101", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_255_by_1", "typeString": "int_const 255" }, "value": "0xff" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_255_by_1", "typeString": "int_const 255" } ], "id": 14161, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2303:6:101", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes1_$", "typeString": "type(bytes1)" }, "typeName": { "id": 14160, "name": "bytes1", "nodeType": "ElementaryTypeName", "src": "2303:6:101", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 14163, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2303:12:101", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, { "argumentTypes": null, "id": 14164, "name": "deployer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14150, "src": "2317:8:101", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 14165, "name": "salt", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14146, "src": "2327:4:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 14166, "name": "bytecodeHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14148, "src": "2333:12:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes1", "typeString": "bytes1" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 14158, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "2286:3:101", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 14159, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2286:16:101", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 14167, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2286:60:101", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 14157, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -8, "src": "2263:9:101", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 14168, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2263:93:101", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "2247:109:101" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 14176, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 14174, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 14156, "src": "2389:5:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "<<", "rightExpression": { "argumentTypes": null, "hexValue": "3936", "id": 14175, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2398:2:101", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_96_by_1", "typeString": "int_const 96" }, "value": "96" }, "src": "2389:11:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 14173, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2381:7:101", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes20_$", "typeString": "type(bytes20)" }, "typeName": { "id": 14172, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "2381:7:101", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 14177, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2381:20:101", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 14171, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2373:7:101", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 14170, "name": "address", "nodeType": "ElementaryTypeName", "src": "2373:7:101", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 14178, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2373:29:101", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "functionReturnParameters": 14154, "id": 14179, "nodeType": "Return", "src": "2366:36:101" } ] }, "documentation": { "id": 14144, "nodeType": "StructuredDocumentation", "src": "1890:232:101", "text": "@dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at\n`deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}." }, "id": 14181, "implemented": true, "kind": "function", "modifiers": [], "name": "computeAddress", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 14151, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14146, "mutability": "mutable", "name": "salt", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14181, "src": "2151:12:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14145, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2151:7:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14148, "mutability": "mutable", "name": "bytecodeHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14181, "src": "2165:20:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 14147, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2165:7:101", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 14150, "mutability": "mutable", "name": "deployer", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14181, "src": "2187:16:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14149, "name": "address", "nodeType": "ElementaryTypeName", "src": "2187:7:101", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2150:54:101" }, "returnParameters": { "id": 14154, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 14153, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 14181, "src": "2228:7:101", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14152, "name": "address", "nodeType": "ElementaryTypeName", "src": "2228:7:101", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2227:9:101" }, "scope": 14182, "src": "2127:282:101", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 14183, "src": "393:2018:101" } ], "src": "0:2412:101" }, "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212209c4a8cf7fbe5611bcfaa23c0f22d0da0c47d258b2a842f52d98da165452ada8c64736f6c63430006070033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212209c4a8cf7fbe5611bcfaa23c0f22d0da0c47d258b2a842f52d98da165452ada8c64736f6c63430006070033", "compiler": { "name": "solc", "version": "0.6.7+commit.b8d736ae.Emscripten.clang", "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "petersburg" } }