34 lines
1016 B
Solidity
34 lines
1016 B
Solidity
/*
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Copyright 2020 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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pragma experimental ABIEncoderV2;
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interface ICloneFactory {
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function clone(address prototype) external returns (address proxy);
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}
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// introduction of proxy mode design: https://docs.openzeppelin.com/upgrades/2.8/
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// minimum implementation of transparent proxy: https://eips.ethereum.org/EIPS/eip-1167
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contract CloneFactory is ICloneFactory {
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function clone(address prototype) external override returns (address proxy) {
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bytes20 targetBytes = bytes20(prototype);
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assembly {
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let clone := mload(0x40)
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mstore(clone, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
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mstore(add(clone, 0x14), targetBytes)
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mstore(
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add(clone, 0x28),
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0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
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)
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proxy := create(0, clone, 0x37)
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}
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return proxy;
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}
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}
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