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openzeppelin-contracts/contracts/token/ERC721/extensions/ERC721Burnable.sol
github-actions[bot] 932fddf69a Release v5.0.0 (#4662)
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Francisco Giordano <fg@frang.io>
2023-10-05 14:58:30 -03:00

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Solidity

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/ERC721Burnable.sol)
pragma solidity ^0.8.20;
import {ERC721} from "../ERC721.sol";
import {Context} from "../../../utils/Context.sol";
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be burned (destroyed).
*/
abstract contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
// Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
// (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
_update(address(0), tokenId, _msgSender());
}
}