forked from DecentralizedClimateFoundation/DCIPs
75 lines
2.9 KiB
Solidity
75 lines
2.9 KiB
Solidity
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// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.0;
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import "./ERC3525.sol";
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import "./interface/IERC3525SlotApprovable.sol";
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abstract contract ERC3525SlotApprovable is ERC3525, IERC3525SlotApprovable {
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// @dev owner => slot => operator => approved
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mapping(address => mapping(uint256 => mapping(address => bool)))
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private _slotApprovals;
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function setApprovalForSlot( address owner_, uint256 slot_, address operator_, bool approved_) external payable virtual override {
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require(
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_msgSender() == owner_ || isApprovedForAll(owner_, _msgSender()),
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"ERC3525SlotApprovable: caller is not owner nor approved for all"
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);
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_setApprovalForSlot(owner_, slot_, operator_, approved_);
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}
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function isApprovedForSlot( address owner_, uint256 slot_, address operator_) public view virtual override returns (bool) {
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return _slotApprovals[owner_][slot_][operator_];
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}
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function approve(address to_, uint256 tokenId_) public virtual override(IERC721, ERC721) {
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address owner = ERC721.ownerOf(tokenId_);
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uint256 slot = ERC3525.slotOf(tokenId_);
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require(to_ != owner, "ERC3525: approval to current owner");
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require(
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_msgSender() == owner ||
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ERC721.isApprovedForAll(owner, _msgSender()) ||
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ERC3525SlotApprovable.isApprovedForSlot(
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owner,
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slot,
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_msgSender()
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),
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"ERC3525: caller is not owner nor approved"
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);
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_approve(to_, tokenId_);
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}
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function approve(uint256 tokenId_, address to_, uint256 value_) external payable virtual override(IERC3525, ERC3525) {
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address owner = ERC721.ownerOf(tokenId_);
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require(to_ != owner, "ERC3525: approval to current owner");
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require(
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_isApprovedOrOwner(_msgSender(), tokenId_),
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"ERC3525: caller is not owner nor approved"
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);
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_approveValue(tokenId_, to_, value_);
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}
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function _setApprovalForSlot( address owner_, uint256 slot_, address operator_, bool approved_) internal virtual {
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require(owner_ != operator_, "ERC3525SlotApprovable: approve to owner");
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_slotApprovals[owner_][slot_][operator_] = approved_;
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emit ApprovalForSlot(owner_, slot_, operator_, approved_);
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}
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function _isApprovedOrOwner(address operator_, uint256 tokenId_) internal view virtual override returns (bool) {
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require(
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_exists(tokenId_),
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"ERC3525: operator query for nonexistent token"
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);
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address owner = ERC721.ownerOf(tokenId_);
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uint256 slot = ERC3525.slotOf(tokenId_);
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return (operator_ == owner ||
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getApproved(tokenId_) == operator_ ||
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ERC721.isApprovedForAll(owner, operator_) ||
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ERC3525SlotApprovable.isApprovedForSlot(owner, slot, operator_));
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}
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}
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