blob: 36f232b784d72e3921f2d1162fa64382e3b28b6c [file] [log] [blame]
// 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
// 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 <algorithm>
#include <type_traits>
// Compares the provided value to nullptr and returns it. This is intended to be
// used as part of another statement.
#define CHECK_NOTNULL(value) \
::pw::log::CheckNotNull("", __LINE__, #value " != nullptr", value)
// In release builds, DCHECK_NOTNULL simply passes along the value.
// DCHECK_NOTNULL must not be used as a standalone expression, since the result
// would be unused on release builds. Use DCHECK_NE instead.
//#define DCHECK_NOTNULL(value) value
#define DCHECK_NOTNULL(value) \
::pw::log::DCheckNotNull("", __LINE__, #value " != nullptr", value)
namespace pw::log {
template <typename T>
constexpr T CheckNotNull(const char* /* file */,
unsigned /* line */,
const char* /* message */,
T&& value) {
"CHECK_NOTNULL statements cannot be passed nullptr");
if (value == nullptr) {
return std::forward<T>(value);
// DCHECK_NOTNULL cannot be used in standalone expressions, so add a
// [[nodiscard]] attribute to prevent this in debug builds. Standalone
// DCHECK_NOTNULL statements in release builds trigger an unused-value warning.
template <typename T>
[[nodiscard]] constexpr T DCheckNotNull(const char* file,
unsigned line,
const char* message,
T&& value) {
return CheckNotNull<T>(file, line, message, std::forward<T>(value));
} // namespace pw::log
// Assert stubs
#define CHECK(...)
#define CHECK_EQ(...)
#define CHECK_GE(...)
#define CHECK_GT(...)
#define CHECK_LE(...)
#define CHECK_LT(...)