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Clone.sol
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Clone.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
contract CloneTool {
function createClone(address target) internal returns (address result) {
bytes20 targetBytes = bytes20(target);
assembly {
let clone := mload(0x40)
mstore(
clone,
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
)
mstore(add(clone, 0x14), targetBytes)
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
result := create(0, clone, 0x37)
}
}
function isClone(
address target,
address query
) internal view returns (bool result) {
bytes20 targetBytes = bytes20(target);
assembly {
let clone := mload(0x40)
mstore(
clone,
0x363d3d373d3d3d363d7300000000000000000000000000000000000000000000
)
mstore(add(clone, 0xa), targetBytes)
mstore(
add(clone, 0x1e),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
let other := add(clone, 0x40)
extcodecopy(query, other, 0, 0x2d)
result := and(
eq(mload(clone), mload(other)),
eq(mload(add(clone, 0xd)), mload(add(other, 0xd)))
)
}
}
}
contract WattingDeploy {
uint256 public a = 100;
}
contract NormalFactory {
// 79,515 gas
function newContract() external returns (address) {
WattingDeploy metaCoin = new WattingDeploy();
return address(metaCoin);
}
}
contract CloneFactory is CloneTool {
// 41,493 gas
function cloneContract(address libraryAddress) external returns (address) {
address metaCoin = createClone(libraryAddress);
return metaCoin;
}
}
contract Create2Factory {
bytes creationCode;
function initBytecode() external {
creationCode = type(WattingDeploy).creationCode;
}
// 93,031 gas
function create2Contract(uint _salt) external payable returns (address) {
address addr;
bytes memory bytecode = creationCode;
assembly {
addr := create2(0, add(bytecode, 32), mload(bytecode), _salt)
if iszero(extcodesize(addr)) {
revert(0, 0)
}
}
return addr;
}
}