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Define ERC-4906 interfaceId in a private constant (#4560)

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Co-authored-by: Francisco Giordano <fg@frang.io>
This commit is contained in:
Hadrien Croubois
2023-09-02 06:31:59 +02:00
committed by GitHub
parent 00c5da2034
commit b7da617d8d
1 changed files with 5 additions and 1 deletions
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6
contracts/token/ERC721/extensions/ERC721URIStorage.sol
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@ -14,6 +14,10 @@ import {IERC165} from "../../../interfaces/IERC165.sol";
abstract contract ERC721URIStorage is IERC4906, ERC721 {
using Strings for uint256;
// Interface ID as defined in ERC-4906. This does not correspond to a traditional interface ID as ERC-4906 only
// defines events and does not include any external function.
bytes4 private constant ERC4906_INTERFACE_ID = bytes4(0x49064906);
// Optional mapping for token URIs
mapping(uint256 tokenId => string) private _tokenURIs;
@ -21,7 +25,7 @@ abstract contract ERC721URIStorage is IERC4906, ERC721 {
* @dev See {IERC165-supportsInterface}
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721, IERC165) returns (bool) {
return interfaceId == bytes4(0x49064906) || super.supportsInterface(interfaceId);
return interfaceId == ERC4906_INTERFACE_ID || super.supportsInterface(interfaceId);
}
/**