feat: initial commit for wtf-contract v2

2026-08-30 23:16:04 +08:00
commit f2769993b5
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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/ERC165.sol)
+
+pragma solidity ^0.8.20;
+
+import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
+import {Initializable} from "@openzeppelin/contracts/proxy/utils/Initializable.sol";
+
+/**
+ * @dev Implementation of the {IERC165} interface.
+ *
+ * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
+ * for the additional interface id that will be supported. For example:
+ *
+ * ```solidity
+ * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
+ *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
+ * }
+ * ```
+ */
+abstract contract ERC165Upgradeable is Initializable, IERC165 {
+    function __ERC165_init() internal onlyInitializing {
+    }
+
+    function __ERC165_init_unchained() internal onlyInitializing {
+    }
+    /// @inheritdoc IERC165
+    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
+        return interfaceId == type(IERC165).interfaceId;
+    }
+}
+