60205944bb
* Clean code - using type().interfaceId to improve readeability of ERC165 registration - hardcoding some keccak256 that are otherwise computed at construction. * hardcode keccak256 result * Improve code readeability using try/catch * Remove hardcoded hash tests show that solc 0.8.0 does the optimization as expected * Use try/catch to improve readability * ERC165Checker: Do not revert when returndata is empty + new test * Address PR comments * improve testing of ERC721Receiver errors * put back comment about invalid interface id * coverage does not support 0.8.1. Reverting back to 0.8.0 * bubble all data with length > 0 if onERC721Receive fails. * Fix test: revert without message trigger is bubble with the default message * using enum object to improve readability
40 lines
1.1 KiB
Solidity
40 lines
1.1 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.0;
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import "../token/ERC721/IERC721Receiver.sol";
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contract ERC721ReceiverMock is IERC721Receiver {
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enum Error {
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None,
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RevertWithMessage,
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RevertWithoutMessage,
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Panic
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}
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bytes4 private immutable _retval;
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Error private immutable _error;
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event Received(address operator, address from, uint256 tokenId, bytes data, uint256 gas);
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constructor (bytes4 retval, Error error) {
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_retval = retval;
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_error = error;
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}
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function onERC721Received(address operator, address from, uint256 tokenId, bytes memory data)
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public override returns (bytes4)
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{
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if (_error == Error.RevertWithMessage) {
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revert("ERC721ReceiverMock: reverting");
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} else if (_error == Error.RevertWithoutMessage) {
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revert();
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} else if (_error == Error.Panic) {
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uint256 a = uint256(0) / uint256(0);
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a;
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}
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emit Received(operator, from, tokenId, data, gasleft());
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return _retval;
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}
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}
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