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55 lines
1.9 KiB
55 lines
1.9 KiB
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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/**
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* @dev Helper library for emitting standardized panic codes.
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*
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* ```solidity
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* contract Example {
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* using Panic for uint256;
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*
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* // Use any of the declared internal constants
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* function foo() { Panic.GENERIC.panic(); }
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*
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* // Alternatively
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* function foo() { Panic.panic(Panic.GENERIC); }
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* }
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* ```
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*
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* Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil].
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*/
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// slither-disable-next-line unused-state
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library Panic {
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/// @dev generic / unspecified error
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uint256 internal constant GENERIC = 0x00;
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/// @dev used by the assert() builtin
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uint256 internal constant ASSERT = 0x01;
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/// @dev arithmetic underflow or overflow
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uint256 internal constant UNDER_OVERFLOW = 0x11;
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/// @dev division or modulo by zero
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uint256 internal constant DIVISION_BY_ZERO = 0x12;
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/// @dev enum conversion error
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uint256 internal constant ENUM_CONVERSION_ERROR = 0x21;
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/// @dev invalid encoding in storage
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uint256 internal constant STORAGE_ENCODING_ERROR = 0x22;
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/// @dev empty array pop
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uint256 internal constant EMPTY_ARRAY_POP = 0x31;
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/// @dev array out of bounds access
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uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32;
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/// @dev resource error (too large allocation or too large array)
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uint256 internal constant RESOURCE_ERROR = 0x41;
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/// @dev calling invalid internal function
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uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51;
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/// @dev Reverts with a panic code. Recommended to use with
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/// the internal constants with predefined codes.
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function panic(uint256 code) internal pure {
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/// @solidity memory-safe-assembly
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assembly {
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mstore(0x00, 0x4e487b71)
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mstore(0x20, code)
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revert(0x1c, 0x24)
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}
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}
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}
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