Merge branch 'solc-0.7' into solc-0.8

contracts/introspection/ERC165Checker.sol

@@ -40,6 +40,29 @@ library ERC165Checker {
             _supportsERC165Interface(account, interfaceId);
     }
 
+    /**
+     * @dev Returns a boolean array where each value corresponds to the
+     * interfaces passed in and whether they're supported or not. This allows
+     * you to batch check interfaces for a contract where your expectation
+     * is that some interfaces may not be supported.
+     *
+     * See {IERC165-supportsInterface}.
+     */
+    function getSupportedInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool[] memory) {
+        // an array of booleans corresponding to interfaceIds and whether they're supported or not
+        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);
+
+        // query support of ERC165 itself
+        if (supportsERC165(account)) {
+            // query support of each interface in interfaceIds
+            for (uint256 i = 0; i < interfaceIds.length; i++) {
+                interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
+            }
+        }
+
+        return interfaceIdsSupported;
+    }
+
     /**
      * @dev Returns true if `account` supports all the interfaces defined in
      * `interfaceIds`. Support for {IERC165} itself is queried automatically.