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88 lines
3.4 KiB
88 lines
3.4 KiB
1 year ago
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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import {IERC1155Receiver} from "../IERC1155Receiver.sol";
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import {IERC1155Errors} from "../../../interfaces/draft-IERC6093.sol";
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/**
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* @dev Library that provide common ERC-1155 utility functions.
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*
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* See https://eips.ethereum.org/EIPS/eip-1155[ERC-1155].
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*/
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library ERC1155Utils {
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/**
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* @dev Performs an acceptance check for the provided `operator` by calling {IERC1155-onERC1155Received}
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* on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`).
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*
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* The acceptance call is not executed and treated as a no-op if the target address is doesn't contain code (i.e. an EOA).
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* Otherwise, the recipient must implement {IERC1155Receiver-onERC1155Received} and return the acceptance magic value to accept
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* the transfer.
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*/
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function checkOnERC1155Received(
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address operator,
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address from,
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address to,
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uint256 id,
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uint256 value,
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bytes memory data
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) internal {
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if (to.code.length > 0) {
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try IERC1155Receiver(to).onERC1155Received(operator, from, id, value, data) returns (bytes4 response) {
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if (response != IERC1155Receiver.onERC1155Received.selector) {
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// Tokens rejected
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revert IERC1155Errors.ERC1155InvalidReceiver(to);
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}
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} catch (bytes memory reason) {
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if (reason.length == 0) {
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// non-IERC1155Receiver implementer
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revert IERC1155Errors.ERC1155InvalidReceiver(to);
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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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}
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}
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/**
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* @dev Performs a batch acceptance check for the provided `operator` by calling {IERC1155-onERC1155BatchReceived}
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* on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`).
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*
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* The acceptance call is not executed and treated as a no-op if the target address is doesn't contain code (i.e. an EOA).
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* Otherwise, the recipient must implement {IERC1155Receiver-onERC1155Received} and return the acceptance magic value to accept
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* the transfer.
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*/
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function checkOnERC1155BatchReceived(
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address operator,
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address from,
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address to,
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uint256[] memory ids,
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uint256[] memory values,
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bytes memory data
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) internal {
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if (to.code.length > 0) {
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try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, values, data) returns (
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bytes4 response
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) {
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if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
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// Tokens rejected
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revert IERC1155Errors.ERC1155InvalidReceiver(to);
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}
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} catch (bytes memory reason) {
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if (reason.length == 0) {
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// non-IERC1155Receiver implementer
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revert IERC1155Errors.ERC1155InvalidReceiver(to);
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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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}
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}
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}
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