Make ERC721._approve internal

(cherry picked from commit df8acac20a)
4 years ago · 1f9c970929
parent 5b42f7aee6
commit 1f9c970929
1 changed files with 6 additions and 1 deletions
--- a/contracts/token/ERC721/ERC721.sol
+++ b/contracts/token/ERC721/ERC721.sol
@ -449,7 +449,12 @@ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable
        return (retval == _ERC721_RECEIVED);
    }

-    function _approve(address to, uint256 tokenId) private {
+    /**
+     * @dev Approve `to` to operate on `tokenId`
+     *
+     * Emits an {Approval} event.
+     */
+    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
    }