685 lines
20 KiB
Solidity
685 lines
20 KiB
Solidity
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// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.15;
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import "./IERC5773.sol";
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import "./library/MultiAssetLib.sol";
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import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
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import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
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import "@openzeppelin/contracts/utils/Address.sol";
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import "@openzeppelin/contracts/utils/Strings.sol";
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import "@openzeppelin/contracts/utils/Context.sol";
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contract MultiAssetToken is Context, IERC721, IERC5773 {
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using MultiAssetLib for uint256;
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using MultiAssetLib for uint64[];
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using MultiAssetLib for uint128[];
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using Address for address;
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using Strings for uint256;
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// Token name
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string private _name;
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// Token symbol
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string private _symbol;
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// Mapping from token ID to owner address
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mapping(uint256 => address) private _owners;
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// Mapping owner address to token count
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mapping(address => uint256) private _balances;
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// Mapping from token ID to approved address
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mapping(uint256 => address) private _tokenApprovals;
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// Mapping from owner to operator approvals
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mapping(address => mapping(address => bool)) private _operatorApprovals;
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// Mapping from token ID to approved address for assets
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mapping(uint256 => address) internal _tokenApprovalsForAssets;
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// Mapping from owner to operator approvals for assets
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mapping(address => mapping(address => bool))
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internal _operatorApprovalsForAssets;
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//mapping of uint64 Ids to asset object
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mapping(uint64 => string) internal _assets;
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//mapping of tokenId to new asset, to asset to be replaced
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mapping(uint256 => mapping(uint64 => uint64)) private _assetReplacements;
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//mapping of tokenId to all assets
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mapping(uint256 => uint64[]) internal _activeAssets;
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//mapping of tokenId to an array of asset priorities
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mapping(uint256 => uint64[]) internal _activeAssetPriorities;
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//Double mapping of tokenId to active assets
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mapping(uint256 => mapping(uint64 => bool)) private _tokenAssets;
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//mapping of tokenId to all assets by priority
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mapping(uint256 => uint64[]) internal _pendingAssets;
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constructor(string memory name_, string memory symbol_) {
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_name = name_;
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_symbol = symbol_;
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}
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////////////////////////////////////////
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// ERC-721 COMPLIANCE
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////////////////////////////////////////
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function supportsInterface(bytes4 interfaceId) public view returns (bool) {
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return
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interfaceId == type(IERC5773).interfaceId ||
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interfaceId == type(IERC721).interfaceId ||
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interfaceId == type(IERC165).interfaceId;
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}
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function balanceOf(
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address owner
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) public view virtual override returns (uint256) {
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require(
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owner != address(0),
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"ERC721: address zero is not a valid owner"
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);
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return _balances[owner];
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}
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function ownerOf(
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uint256 tokenId
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) public view virtual override returns (address) {
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address owner = _owners[tokenId];
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require(
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owner != address(0),
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"ERC721: owner query for nonexistent token"
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);
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return owner;
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}
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function name() public view virtual returns (string memory) {
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return _name;
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}
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function symbol() public view virtual returns (string memory) {
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return _symbol;
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}
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function approve(address to, uint256 tokenId) public virtual {
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address owner = ownerOf(tokenId);
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require(to != owner, "MultiAsset: approval to current owner");
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require(
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_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
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"MultiAsset: approve caller is not owner nor approved for all"
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);
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_approve(to, tokenId);
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}
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function approveForAssets(address to, uint256 tokenId) external virtual {
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address owner = ownerOf(tokenId);
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require(to != owner, "MultiAsset: approval to current owner");
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require(
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_msgSender() == owner ||
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isApprovedForAllForAssets(owner, _msgSender()),
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"MultiAsset: approve caller is not owner nor approved for all"
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);
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_approveForAssets(to, tokenId);
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}
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function getApproved(
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uint256 tokenId
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) public view virtual override returns (address) {
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require(
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_exists(tokenId),
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"MultiAsset: approved query for nonexistent token"
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);
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return _tokenApprovals[tokenId];
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}
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function getApprovedForAssets(
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uint256 tokenId
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) public view virtual returns (address) {
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require(
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_exists(tokenId),
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"MultiAsset: approved query for nonexistent token"
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);
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return _tokenApprovalsForAssets[tokenId];
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}
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function setApprovalForAll(
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address operator,
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bool approved
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) public virtual override {
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_setApprovalForAll(_msgSender(), operator, approved);
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}
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function isApprovedForAll(
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address owner,
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address operator
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) public view virtual override returns (bool) {
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return _operatorApprovals[owner][operator];
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}
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function setApprovalForAllForAssets(
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address operator,
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bool approved
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) public virtual override {
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_setApprovalForAllForAssets(_msgSender(), operator, approved);
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}
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function isApprovedForAllForAssets(
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address owner,
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address operator
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) public view virtual returns (bool) {
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return _operatorApprovalsForAssets[owner][operator];
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}
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function transferFrom(
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address from,
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address to,
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uint256 tokenId
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) public virtual override {
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//solhint-disable-next-line max-line-length
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require(
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_isApprovedOrOwner(_msgSender(), tokenId),
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"MultiAsset: transfer caller is not owner nor approved"
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);
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_transfer(from, to, tokenId);
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}
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function safeTransferFrom(
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address from,
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address to,
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uint256 tokenId
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) public virtual override {
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safeTransferFrom(from, to, tokenId, "");
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}
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function safeTransferFrom(
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address from,
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address to,
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uint256 tokenId,
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bytes memory data
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) public virtual override {
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require(
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_isApprovedOrOwner(_msgSender(), tokenId),
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"MultiAsset: transfer caller is not owner nor approved"
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);
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_safeTransfer(from, to, tokenId, data);
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}
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function _safeTransfer(
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address from,
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address to,
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uint256 tokenId,
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bytes memory data
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) internal virtual {
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_transfer(from, to, tokenId);
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require(
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_checkOnERC721Received(from, to, tokenId, data),
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"MultiAsset: transfer to non ERC721 Receiver implementer"
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);
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}
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function _exists(uint256 tokenId) internal view virtual returns (bool) {
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return _owners[tokenId] != address(0);
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}
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function _isApprovedOrOwner(
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address spender,
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uint256 tokenId
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) internal view virtual returns (bool) {
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require(
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_exists(tokenId),
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"MultiAsset: approved query for nonexistent token"
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);
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address owner = ownerOf(tokenId);
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return (spender == owner ||
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isApprovedForAll(owner, spender) ||
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getApproved(tokenId) == spender);
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}
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function _isApprovedForAssetsOrOwner(
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address user,
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uint256 tokenId
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) internal view virtual returns (bool) {
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require(
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_exists(tokenId),
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"MultiAsset: approved query for nonexistent token"
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);
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address owner = ownerOf(tokenId);
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return (user == owner ||
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isApprovedForAllForAssets(owner, user) ||
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getApprovedForAssets(tokenId) == user);
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}
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function _safeMint(address to, uint256 tokenId) internal virtual {
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_safeMint(to, tokenId, "");
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}
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function _safeMint(
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address to,
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uint256 tokenId,
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bytes memory data
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) internal virtual {
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_mint(to, tokenId);
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require(
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_checkOnERC721Received(address(0), to, tokenId, data),
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"MultiAsset: transfer to non ERC721 Receiver implementer"
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);
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}
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function _mint(address to, uint256 tokenId) internal virtual {
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require(to != address(0), "MultiAsset: mint to the zero address");
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require(!_exists(tokenId), "MultiAsset: token already minted");
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_beforeTokenTransfer(address(0), to, tokenId);
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_balances[to] += 1;
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_owners[tokenId] = to;
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emit Transfer(address(0), to, tokenId);
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_afterTokenTransfer(address(0), to, tokenId);
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}
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function _burn(uint256 tokenId) internal virtual {
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// WARNING: If you intend to allow the reminting of a burned token, you
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// might want to clean the assets for the token, that is:
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// _pendingAssets, _activeAssets, _assetReplacements
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// _activeAssetPriorities and _tokenAssets.
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address owner = ownerOf(tokenId);
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_beforeTokenTransfer(owner, address(0), tokenId);
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// Clear approvals
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_approve(address(0), tokenId);
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_approveForAssets(address(0), tokenId);
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_balances[owner] -= 1;
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delete _owners[tokenId];
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emit Transfer(owner, address(0), tokenId);
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_afterTokenTransfer(owner, address(0), tokenId);
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}
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function _transfer(
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address from,
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address to,
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uint256 tokenId
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) internal virtual {
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require(
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ownerOf(tokenId) == from,
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"MultiAsset: transfer from incorrect owner"
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);
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require(to != address(0), "MultiAsset: transfer to the zero address");
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_beforeTokenTransfer(from, to, tokenId);
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// Clear approvals from the previous owner
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_approve(address(0), tokenId);
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_approveForAssets(address(0), tokenId);
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_balances[from] -= 1;
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_balances[to] += 1;
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_owners[tokenId] = to;
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emit Transfer(from, to, tokenId);
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_afterTokenTransfer(from, to, tokenId);
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}
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function _approve(address to, uint256 tokenId) internal virtual {
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_tokenApprovals[tokenId] = to;
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emit Approval(ownerOf(tokenId), to, tokenId);
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}
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function _approveForAssets(address to, uint256 tokenId) internal virtual {
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_tokenApprovalsForAssets[tokenId] = to;
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emit ApprovalForAssets(ownerOf(tokenId), to, tokenId);
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}
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function _setApprovalForAll(
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address owner,
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address operator,
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bool approved
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) internal virtual {
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require(owner != operator, "MultiAsset: approve to caller");
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_operatorApprovals[owner][operator] = approved;
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emit ApprovalForAll(owner, operator, approved);
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}
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function _setApprovalForAllForAssets(
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address owner,
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address operator,
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bool approved
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) internal virtual {
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require(owner != operator, "MultiAsset: approve to caller");
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_operatorApprovalsForAssets[owner][operator] = approved;
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emit ApprovalForAllForAssets(owner, operator, approved);
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}
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function _checkOnERC721Received(
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address from,
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address to,
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uint256 tokenId,
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bytes memory data
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) private returns (bool) {
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if (to.isContract()) {
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try
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IERC721Receiver(to).onERC721Received(
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_msgSender(),
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from,
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tokenId,
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data
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)
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returns (bytes4 retval) {
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return retval == IERC721Receiver.onERC721Received.selector;
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} catch (bytes memory reason) {
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if (reason.length == 0) {
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revert(
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"MultiAsset: transfer to non ERC721 Receiver implementer"
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);
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} else {
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/// @solidity memory-safe-assembly
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assembly {
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revert(add(32, reason), mload(reason))
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}
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}
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}
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} else {
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return true;
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}
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}
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function _beforeTokenTransfer(
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address from,
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address to,
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uint256 tokenId
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) internal virtual {}
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function _afterTokenTransfer(
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address from,
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address to,
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uint256 tokenId
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) internal virtual {}
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////////////////////////////////////////
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// ASSETS
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////////////////////////////////////////
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function acceptAsset(
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uint256 tokenId,
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uint256 index,
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uint64 assetId
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) external virtual {
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require(
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index < _pendingAssets[tokenId].length,
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"MultiAsset: index out of bounds"
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);
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require(
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_isApprovedForAssetsOrOwner(_msgSender(), tokenId),
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"MultiAsset: not owner or approved"
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);
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require(
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assetId == _pendingAssets[tokenId][index],
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"MultiAsset: Unexpected asset"
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);
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_beforeAcceptAsset(tokenId, index, assetId);
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uint64 replacesId = _assetReplacements[tokenId][assetId];
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uint256 replaceIndex;
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bool replacefound;
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if (replacesId != uint64(0))
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(replaceIndex, replacefound) = _activeAssets[tokenId].indexOf(
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replacesId
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);
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if (replacefound) {
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// We don't want to remove and then push a new asset.
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// This way we also keep the priority of the original resource
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_activeAssets[tokenId][replaceIndex] = assetId;
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delete _tokenAssets[tokenId][replacesId];
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} else {
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// We use the current size as next priority, by default priorities would be [0,1,2...]
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_activeAssetPriorities[tokenId].push(
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uint64(_activeAssets[tokenId].length)
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);
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_activeAssets[tokenId].push(assetId);
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replacesId = uint64(0);
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}
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_pendingAssets[tokenId].removeItemByIndex(index);
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delete _assetReplacements[tokenId][assetId];
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emit AssetAccepted(tokenId, assetId, replacesId);
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_afterAcceptAsset(tokenId, index, assetId);
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}
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function rejectAsset(
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uint256 tokenId,
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uint256 index,
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uint64 assetId
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) external virtual {
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require(
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index < _pendingAssets[tokenId].length,
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"MultiAsset: index out of bounds"
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);
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require(
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_pendingAssets[tokenId].length > index,
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"MultiAsset: Pending asset index out of range"
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);
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require(
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_isApprovedForAssetsOrOwner(_msgSender(), tokenId),
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"MultiAsset: not owner or approved"
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);
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_beforeRejectAsset(tokenId, index, assetId);
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_pendingAssets[tokenId].removeItemByIndex(index);
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delete _tokenAssets[tokenId][assetId];
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delete _assetReplacements[tokenId][assetId];
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emit AssetRejected(tokenId, assetId);
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_afterRejectAsset(tokenId, index, assetId);
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}
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function rejectAllAssets(
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uint256 tokenId,
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uint256 maxRejections
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) external virtual {
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require(
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_isApprovedForAssetsOrOwner(_msgSender(), tokenId),
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"MultiAsset: not owner or approved"
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);
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uint256 len = _pendingAssets[tokenId].length;
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if (len > maxRejections) revert("Unexpected number of assets");
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_beforeRejectAllAssets(tokenId);
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for (uint256 i; i < len; ) {
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uint64 assetId = _pendingAssets[tokenId][i];
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delete _assetReplacements[tokenId][assetId];
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unchecked {
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++i;
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}
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}
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delete (_pendingAssets[tokenId]);
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emit AssetRejected(tokenId, uint64(0));
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_afterRejectAllAssets(tokenId);
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}
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function setPriority(
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uint256 tokenId,
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uint64[] memory priorities
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) external virtual {
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uint256 length = priorities.length;
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require(
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length == _activeAssets[tokenId].length,
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"MultiAsset: Bad priority list length"
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);
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require(
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_isApprovedForAssetsOrOwner(_msgSender(), tokenId),
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"MultiAsset: not owner or approved"
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);
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_beforeSetPriority(tokenId, priorities);
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_activeAssetPriorities[tokenId] = priorities;
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emit AssetPrioritySet(tokenId);
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_afterSetPriority(tokenId, priorities);
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}
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function getActiveAssets(
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uint256 tokenId
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) public view virtual returns (uint64[] memory) {
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return _activeAssets[tokenId];
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}
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function getPendingAssets(
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uint256 tokenId
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) public view virtual returns (uint64[] memory) {
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return _pendingAssets[tokenId];
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}
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function getActiveAssetPriorities(
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uint256 tokenId
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) public view virtual returns (uint64[] memory) {
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return _activeAssetPriorities[tokenId];
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}
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function getAssetReplacements(
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uint256 tokenId,
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uint64 newAssetId
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) public view virtual returns (uint64) {
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return _assetReplacements[tokenId][newAssetId];
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}
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function getAssetMetadata(
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uint256 tokenId,
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uint64 assetId
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) public view virtual returns (string memory) {
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if (!_tokenAssets[tokenId][assetId])
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revert("MultiAsset: Token does not have asset");
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return _assets[assetId];
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}
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function tokenURI(
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uint256 tokenId
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) public view virtual returns (string memory) {
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return "";
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}
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// To be implemented with custom guards
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function _addAssetEntry(uint64 id, string memory metadataURI) internal {
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require(id != uint64(0), "RMRK: Write to zero");
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require(bytes(_assets[id]).length == 0, "RMRK: asset already exists");
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_beforeAddAsset(id, metadataURI);
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_assets[id] = metadataURI;
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emit AssetSet(id);
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_afterAddAsset(id, metadataURI);
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}
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function _addAssetToToken(
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uint256 tokenId,
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uint64 assetId,
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uint64 replacesAssetWithId
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) internal {
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require(
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!_tokenAssets[tokenId][assetId],
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"MultiAsset: Asset already exists on token"
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);
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require(
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bytes(_assets[assetId]).length != 0,
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"MultiAsset: Asset not found in storage"
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);
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require(
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_pendingAssets[tokenId].length < 128,
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"MultiAsset: Max pending assets reached"
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);
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_beforeAddAssetToToken(tokenId, assetId, replacesAssetWithId);
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_tokenAssets[tokenId][assetId] = true;
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_pendingAssets[tokenId].push(assetId);
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if (replacesAssetWithId != uint64(0)) {
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_assetReplacements[tokenId][assetId] = replacesAssetWithId;
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}
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uint256[] memory tokenIds = new uint256[](1);
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tokenIds[0] = tokenId;
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emit AssetAddedToTokens(tokenIds, assetId, replacesAssetWithId);
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_afterAddAssetToToken(tokenId, assetId, replacesAssetWithId);
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}
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|
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// HOOKS
|
||
|
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|
||
|
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function _beforeAddAsset(
|
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|
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uint64 id,
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string memory metadataURI
|
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) internal virtual {}
|
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function _afterAddAsset(
|
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uint64 id,
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string memory metadataURI
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) internal virtual {}
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function _beforeAddAssetToToken(
|
||
|
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uint256 tokenId,
|
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uint64 assetId,
|
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uint64 replacesAssetWithId
|
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) internal virtual {}
|
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|
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|
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function _afterAddAssetToToken(
|
||
|
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uint256 tokenId,
|
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|
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uint64 assetId,
|
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|
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uint64 replacesAssetWithId
|
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) internal virtual {}
|
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|
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|
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|
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function _beforeAcceptAsset(
|
||
|
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uint256 tokenId,
|
||
|
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uint256 index,
|
||
|
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uint256 assetId
|
||
|
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) internal virtual {}
|
||
|
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|
||
|
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function _afterAcceptAsset(
|
||
|
|
uint256 tokenId,
|
||
|
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uint256 index,
|
||
|
|
uint256 assetId
|
||
|
|
) internal virtual {}
|
||
|
|
|
||
|
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function _beforeRejectAsset(
|
||
|
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uint256 tokenId,
|
||
|
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uint256 index,
|
||
|
|
uint256 assetId
|
||
|
|
) internal virtual {}
|
||
|
|
|
||
|
|
function _afterRejectAsset(
|
||
|
|
uint256 tokenId,
|
||
|
|
uint256 index,
|
||
|
|
uint256 assetId
|
||
|
|
) internal virtual {}
|
||
|
|
|
||
|
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function _beforeRejectAllAssets(uint256 tokenId) internal virtual {}
|
||
|
|
|
||
|
|
function _afterRejectAllAssets(uint256 tokenId) internal virtual {}
|
||
|
|
|
||
|
|
function _beforeSetPriority(
|
||
|
|
uint256 tokenId,
|
||
|
|
uint64[] memory priorities
|
||
|
|
) internal virtual {}
|
||
|
|
|
||
|
|
function _afterSetPriority(
|
||
|
|
uint256 tokenId,
|
||
|
|
uint64[] memory priorities
|
||
|
|
) internal virtual {}
|
||
|
|
}
|