Optimize ERC721 _isApprovedOrOwner function (#3248)

62eb4568 · Amirhossein Banavi · GitHub · f8bfa560 · 62eb4568
Unverified Commit 62eb4568 authored Mar 09, 2022 by Amirhossein Banavi Committed by GitHub Mar 08, 2022
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ERC721.sol contracts/token/ERC721/ERC721.sol +1 -1

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--- a/contracts/token/ERC721/ERC721.sol
+++ b/contracts/token/ERC721/ERC721.sol
@@ -232,7 +232,7 @@ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
-        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
+        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**