dexorder

lib_openzeppelin_contracts/contracts/utils/Panic.sol

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