{ "fileName": "Create2.sol", "contractName": "Create2", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.7.0;\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(uint256(_data));\n }\n}\n", "sourcePath": "contracts/utils/Create2.sol", "sourceMap": "426:2012:107:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "426:2012:107:-:0;;;;;;;;", "abi": [], "ast": { "absolutePath": "contracts/utils/Create2.sol", "exportedSymbols": { "Create2": [ 13054 ] }, "id": 13055, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 12948, "literals": [ "solidity", "^", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:107" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 12949, "nodeType": "StructuredDocumentation", "src": "58:367:107", "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\n contract will be deployed, which allows for interesting new mechanisms known\n as 'counterfactual interactions'.\n See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more\n information." }, "fullyImplemented": true, "id": 13054, "linearizedBaseContracts": [ 13054 ], "name": "Create2", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 12996, "nodeType": "Block", "src": "1109:439:107", "statements": [ { "assignments": [ 12962 ], "declarations": [ { "constant": false, "id": 12962, "mutability": "mutable", "name": "addr", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12996, "src": "1119:12:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12961, "name": "address", "nodeType": "ElementaryTypeName", 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The address where the contract\n will 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": 12997, "implemented": true, "kind": "function", "modifiers": [], "name": "deploy", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12957, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12952, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12997, "src": "1029:14:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12951, "name": 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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." }, "id": 13017, "implemented": true, "kind": "function", "modifiers": [], "name": "computeAddress", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 13003, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13000, "mutability": "mutable", "name": "salt", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13017, "src": "1776:12:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 12999, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1776:7:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 13002, "mutability": "mutable", "name": "bytecodeHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13017, "src": "1790:20:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13001, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1790:7:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "1775:36:107" }, "returnParameters": { "id": 13006, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13005, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13017, "src": "1835:7:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13004, "name": "address", "nodeType": "ElementaryTypeName", "src": "1835:7:107", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1834:9:107" }, "scope": 13054, "src": "1752:165:107", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 13052, "nodeType": "Block", "src": "2270:166:107", "statements": [ { "assignments": [ 13030 ], "declarations": [ { "constant": false, "id": 13030, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13052, "src": "2280:13:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13029, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2280:7:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "id": 13043, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30786666", "id": 13036, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2343:4:107", "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": 13035, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2336:6:107", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes1_$", "typeString": "type(bytes1)" }, "typeName": { "id": 13034, "name": "bytes1", "nodeType": "ElementaryTypeName", "src": "2336:6:107", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 13037, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2336:12:107", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, { "argumentTypes": null, "id": 13038, "name": "deployer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13024, "src": "2350:8:107", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 13039, "name": "salt", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13020, "src": "2360:4:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 13040, "name": "bytecodeHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13022, "src": "2366:12:107", "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": 13032, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "2319:3:107", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 13033, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2319:16:107", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 13041, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2319:60:107", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 13031, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -8, "src": "2296:9:107", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 13042, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2296:93:107", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "2280:109:107" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 13048, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13030, "src": "2422:5:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13047, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2414:7:107", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 13046, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2414:7:107", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 13049, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2414:14:107", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 13045, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2406:7:107", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 13044, "name": "address", "nodeType": "ElementaryTypeName", "src": "2406:7:107", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 13050, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2406:23:107", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "functionReturnParameters": 13028, "id": 13051, "nodeType": "Return", "src": "2399:30:107" } ] }, "documentation": { "id": 13018, "nodeType": "StructuredDocumentation", "src": "1923:232:107", "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": 13053, "implemented": true, "kind": "function", "modifiers": [], "name": "computeAddress", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 13025, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13020, "mutability": "mutable", "name": "salt", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13053, "src": "2184:12:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13019, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2184:7:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 13022, "mutability": "mutable", "name": "bytecodeHash", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13053, "src": "2198:20:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13021, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2198:7:107", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 13024, "mutability": "mutable", "name": "deployer", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13053, "src": "2220:16:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13023, "name": "address", "nodeType": "ElementaryTypeName", "src": "2220:7:107", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2183:54:107" }, "returnParameters": { "id": 13028, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13027, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 13053, "src": "2261:7:107", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13026, "name": "address", "nodeType": "ElementaryTypeName", "src": "2261:7:107", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2260:9:107" }, "scope": 13054, "src": "2160:276:107", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 13055, "src": "426:2012:107" } ], "src": "33:2406:107" }, "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220ba69cec8d4d933c1a3dad9b02c41591ee5b616148401ae56c68abe82fab56d4764736f6c63430007000033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220ba69cec8d4d933c1a3dad9b02c41591ee5b616148401ae56c68abe82fab56d4764736f6c63430007000033", "compiler": { "name": "solc", "version": "0.7.0+commit.9e61f92b.Emscripten.clang", "optimizer": { "enabled": false, "runs": 200 }, "evmVersion": "petersburg" } }