Fix .gitignore: stop tracking ignored files

2026-05-26 19:26:33 +00:00 · 2025-07-27 10:39:02 +05:30
parent b42747e9a3
commit 3a87ef0576
625 changed files with 88566 additions and 63 deletions
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v4.9.0) (utils/introspection/ERC1820Implementer.sol)
+
+pragma solidity ^0.8.0;
+
+import "./IERC1820Implementer.sol";
+
+/**
+ * @dev Implementation of the {IERC1820Implementer} interface.
+ *
+ * Contracts may inherit from this and call {_registerInterfaceForAddress} to
+ * declare their willingness to be implementers.
+ * {IERC1820Registry-setInterfaceImplementer} should then be called for the
+ * registration to be complete.
+ *
+ * CAUTION: This file is deprecated as of v4.9 and will be removed in the next major release.
+ */
+contract ERC1820Implementer is IERC1820Implementer {
+    bytes32 private constant _ERC1820_ACCEPT_MAGIC = keccak256("ERC1820_ACCEPT_MAGIC");
+
+    mapping(bytes32 => mapping(address => bool)) private _supportedInterfaces;
+
+    /**
+     * @dev See {IERC1820Implementer-canImplementInterfaceForAddress}.
+     */
+    function canImplementInterfaceForAddress(
+        bytes32 interfaceHash,
+        address account
+    ) public view virtual override returns (bytes32) {
+        return _supportedInterfaces[interfaceHash][account] ? _ERC1820_ACCEPT_MAGIC : bytes32(0x00);
+    }
+
+    /**
+     * @dev Declares the contract as willing to be an implementer of
+     * `interfaceHash` for `account`.
+     *
+     * See {IERC1820Registry-setInterfaceImplementer} and
+     * {IERC1820Registry-interfaceHash}.
+     */
+    function _registerInterfaceForAddress(bytes32 interfaceHash, address account) internal virtual {
+        _supportedInterfaces[interfaceHash][account] = true;
+    }
+}