DCIPs/assets/eip-5700/erc1155/ERC1155Binder.sol

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// SPDX-License-Identifier: CC0-1.0
pragma solidity ^0.8.16;
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC1155Bindable} from "../interfaces/IERC1155Bindable.sol";
import {IERC1155Binder} from "../interfaces/IERC1155Binder.sol";
/// @title ERC-1155 Binder Reference Implementation
contract ERC1155Binder is IERC1155Binder {
struct Bindable {
address tokenAddress;
uint256 tokenId;
}
/// @notice Checks for an owner if an address is an authorized operator.
mapping(address => mapping(address => bool)) public _isApprovedForAll;
/// @notice Tracks ownership of bound assets.
mapping(uint256 => address) _ownerOf;
/// @dev EIP-165 identifiers for all supported interfaces.
bytes4 private constant _ERC165_INTERFACE_ID = 0x01ffc9a7;
bytes4 private constant _ERC1155_BINDER_INTERFACE_ID = 0x2ac2d2bc;
bytes4 private constant _ERC1155_BINDABLE_INTERFACE_ID = 0xd92c3ff0;
/// @inheritdoc IERC1155Binder
function isApprovedForAll(address owner, address operator) external view override returns (bool) {
return _isApprovedForAll[owner][operator];
}
/// @inheritdoc IERC1155Binder
function ownerOf(uint256 id) public view returns (address) {
return _ownerOf[id];
}
/// @inheritdoc IERC1155Binder
function onERC1155Bind(
address operator,
address from,
address to,
uint256 tokenId,
uint256 amount,
uint256 bindId,
bytes calldata data
) public returns (bytes4) {
return IERC1155Binder.onERC1155Bind.selector;
}
/// @inheritdoc IERC1155Binder
function onERC1155BatchBind(
address operator,
address from,
address to,
uint256[] calldata tokenIds,
uint256[] calldata amounts,
uint256[] calldata bindIds,
bytes calldata data
) public returns (bytes4) {
return IERC1155Binder.onERC1155BatchBind.selector;
}
/// @inheritdoc IERC1155Binder
function onERC1155Unbind(
address operator,
address from,
address to,
uint256 tokenId,
uint256 amount,
uint256 bindId,
bytes calldata data
) public returns (bytes4) {
return IERC1155Binder.onERC1155Unbind.selector;
}
/// @inheritdoc IERC1155Binder
function onERC1155BatchUnbind(
address operator,
address from,
address to,
uint256[] calldata tokenIds,
uint256[] calldata amounts,
uint256[] calldata bindIds,
bytes calldata data
) public returns (bytes4) {
return IERC1155Binder.onERC1155BatchUnbind.selector;
}
function supportsInterface(bytes4 id) external pure returns (bool) {
return id == _ERC165_INTERFACE_ID || id == _ERC1155_BINDER_INTERFACE_ID;
}
/// @notice Mints a new asset identified by `id` to address `to`.
function _mint(address to, uint256 id) internal {
if (to == address(0)) {
revert ReceiverInvalid();
}
if (_ownerOf[id] != address(0)) {
revert AssetAlreadyMinted();
}
_ownerOf[id] = to;
}
}