891d173705
* Adding V08 contracts * Removing LibSafeMathV08 * Apply suggestions from code review Co-authored-by: duncancmt <1207590+duncancmt@users.noreply.github.com>
43 lines
1.5 KiB
Solidity
43 lines
1.5 KiB
Solidity
// SPDX-License-Identifier: Apache-2.0
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/*
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Copyright 2020 ZeroEx Intl.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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pragma solidity ^0.8;
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library LibRichErrorsV08 {
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// bytes4(keccak256("Error(string)"))
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bytes4 internal constant STANDARD_ERROR_SELECTOR = 0x08c379a0;
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/// @dev ABI encode a standard, string revert error payload.
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/// This is the same payload that would be included by a `revert(string)`
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/// solidity statement. It has the function signature `Error(string)`.
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/// @param message The error string.
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/// @return The ABI encoded error.
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function StandardError(string memory message) internal pure returns (bytes memory) {
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return abi.encodeWithSelector(STANDARD_ERROR_SELECTOR, bytes(message));
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}
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/// @dev Reverts an encoded rich revert reason `errorData`.
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/// @param errorData ABI encoded error data.
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function rrevert(bytes memory errorData) internal pure {
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assembly ("memory-safe") {
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revert(add(errorData, 0x20), mload(errorData))
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}
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}
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}
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