restruct contract repo

2020-10-23 01:16:52 +08:00
parent 5f10f065e4
commit e8182dd1a1
53 changed files with 775 additions and 2575 deletions
--- a/contracts/lib/CloneFactory.sol
+++ b/contracts/lib/CloneFactory.sol
@@ -0,0 +1,33 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+interface ICloneFactory {
+    function clone(address prototype) external returns (address proxy);
+}
+
+// introduction of proxy mode design: https://docs.openzeppelin.com/upgrades/2.8/
+// minimum implementation of transparent proxy: https://eips.ethereum.org/EIPS/eip-1167
+
+contract CloneFactory is ICloneFactory {
+    function clone(address prototype) external override returns (address proxy) {
+        bytes20 targetBytes = bytes20(prototype);
+        assembly {
+            let clone := mload(0x40)
+            mstore(clone, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
+            mstore(add(clone, 0x14), targetBytes)
+            mstore(
+                add(clone, 0x28),
+                0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
+            )
+            proxy := create(0, clone, 0x37)
+        }
+        return proxy;
+    }
+}