DCIPs/assets/eip-6150/contracts/ERC6150ParentTransferable.sol

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// SPDX-License-Identifier: CC0-1.0
pragma solidity ^0.8.0;
import "./ERC6150.sol";
import "./interfaces/IERC6150ParentTransferable.sol";
abstract contract ERC6150ParentTransferable is
ERC6150,
IERC6150ParentTransferable
{
function transferParent(
uint256 newParentId,
uint256 tokenId
) public virtual override {
require(
_isApprovedOrOwner(_msgSender(), tokenId),
"ERC6150ParentTransferable: caller is not token owner nor approved"
);
if (newParentId != 0) {
require(
_exists(newParentId),
"ERC6150ParentTransferable: newParentId doesn't exists"
);
}
address owner = ownerOf(tokenId);
uint256 oldParentId = parentOf(tokenId);
_safeBurn(tokenId);
_safeMintWithParent(owner, newParentId, tokenId);
emit ParentTransferred(tokenId, oldParentId, newParentId);
}
function batchTransferParent(
uint256 newParentId,
uint256[] memory tokenIds
) public virtual override {
for (uint256 i = 0; i < tokenIds.length; i++) {
transferParent(tokenIds[i], newParentId);
}
}
}