|
|
|
|
|
|
|
|
|
|
|
pragma solidity ^0.8.0; |
|
|
|
import "./IERC165.sol"; |
|
|
|
|
|
* @dev Implementation of the {IERC165} interface. |
|
* |
|
* Contracts that want to implement ERC165 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); |
|
* } |
|
* ``` |
|
* |
|
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. |
|
*/ |
|
abstract contract ERC165 is IERC165 { |
|
|
|
* @dev See {IERC165-supportsInterface}. |
|
*/ |
|
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { |
|
return interfaceId == type(IERC165).interfaceId; |
|
} |
|
} |
|
|