// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once

#include "pw_assert/config.h"  // For PW_ASSERT_ENABLE_DEBUG
#include "pw_preprocessor/compiler.h"
#include "pw_preprocessor/util.h"

PW_EXTERN_C_START

PW_NO_RETURN void pw_assert_HandleFailure(void);

PW_EXTERN_C_END

// A header- and constexpr-safe version of PW_CHECK().
//
// If the given condition is false, crash the system. Otherwise, do nothing.
// The condition is guaranteed to be evaluated. This assert implementation is
// guaranteed to be constexpr-safe.
//
// IMPORTANT: Unlike the PW_CHECK_*() suite of macros, this API captures no
// rich information like line numbers, the file, expression arguments, or the
// stringified expression. Use these macros only when absolutely necessary --
// in headers, constexr contexts, or in rare cases where the call site overhead
// of a full PW_CHECK must be avoided. Use PW_CHECK_*() whenever possible.
#define PW_ASSERT(condition)     \
  do {                           \
    if (!(condition)) {          \
      pw_assert_HandleFailure(); \
    }                            \
  } while (0)

// A header- and constexpr-safe version of PW_DCHECK().
//
// Same as PW_ASSERT(), except that if PW_ASSERT_ENABLE_DEBUG == 1, the assert
// is disabled and condition is not evaluated.
//
// IMPORTANT: Unlike the PW_CHECK_*() suite of macros, this API captures no
// rich information like line numbers, the file, expression arguments, or the
// stringified expression. Use these macros only when absolutely necessary --
// in headers, constexr contexts, or in rare cases where the call site overhead
// of a full PW_CHECK must be avoided. Use PW_DCHECK_*() whenever possible.
#define PW_DASSERT(condition)                            \
  do {                                                   \
    if ((PW_ASSERT_ENABLE_DEBUG == 1) && !(condition)) { \
      pw_assert_HandleFailure();                         \
    }                                                    \
  } while (0)