| /* |
| * Copyright (c) 2019, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file includes macros for static assert for C++03. |
| */ |
| |
| #ifndef OPENTHREAD_STATIC_ASSERT_HPP_ |
| #define OPENTHREAD_STATIC_ASSERT_HPP_ |
| |
| #ifdef __cplusplus |
| |
| /** |
| * Some compilers such as Keil MDK-ARM does not support __COUNTER__ macro. |
| */ |
| #ifndef __COUNTER__ |
| #define __COUNTER__ __LINE__ |
| #endif |
| |
| namespace ot { |
| |
| template <int> struct StaticAssertError; |
| template <> struct StaticAssertError<true> |
| { |
| StaticAssertError(...); |
| }; |
| |
| } // namespace ot |
| |
| #define __OT_STATIC_ASSERT_ERROR(aError, aLine) aError##aLine |
| #define _OT_STATIC_ASSERT_ERROR(aLine) __OT_STATIC_ASSERT_ERROR(StaticAssertError, aLine) |
| |
| /** |
| * This macro does static assert. |
| * |
| * @param[in] aExpression An expression to assert. |
| * @param[in] aMessage A message to describe what is wrong when @p aExpression is false. |
| * |
| */ |
| #define OT_STATIC_ASSERT(aExpression, aMessage) \ |
| enum \ |
| { \ |
| _OT_STATIC_ASSERT_ERROR(__COUNTER__) = sizeof(ot::StaticAssertError<(aExpression) != 0>(aMessage)), \ |
| } |
| |
| #endif // __cplusplus |
| |
| #endif // OPENTHREAD_STATIC_ASSERT_HPP_ |