blob: 0e9477adb08bf1d190f00a9e79eb77a24ff850dc [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
#ifdef __cpp_inline_variables
#define PW_INLINE_VARIABLE inline
#endif // __cpp_inline_variables
// Mark functions as constexpr if the relaxed constexpr rules are supported.
#if __cpp_constexpr >= 201304L
#define PW_CONSTEXPR_FUNCTION constexpr
#endif // __cpp_constexpr >= 201304L
// This is an adapter for supporting static_assert with a single argument in
// C++11 or C++14. Macros don't correctly parse commas in template expressions,
// so the static_assert arguments are passed to an overloaded C++ function. The
// full stringified static_assert arguments are used as the message.
#if __cpp_static_assert < 201411L
#define static_assert(...) \
static_assert(::pw::polyfill::internal::StaticAssertExpression(__VA_ARGS__), \
namespace pw {
namespace polyfill {
namespace internal {
constexpr bool StaticAssertExpression(bool expression) { return expression; }
constexpr bool StaticAssertExpression(bool expression, const char*) {
return expression;
} // namespace internal
} // namespace polyfill
} // namespace pw
#endif // __cpp_static_assert < 201411L