is_object.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_TYPE_TRAITS_IS_OBJECT_HPP
#define TETL_TYPE_TRAITS_IS_OBJECT_HPP
 
#include <etl/_config/all.hpp>
 
#include <etl/_type_traits/bool_constant.hpp>
#include <etl/_type_traits/is_array.hpp>
#include <etl/_type_traits/is_class.hpp>
#include <etl/_type_traits/is_scalar.hpp>
#include <etl/_type_traits/is_union.hpp>
 
namespace etl {
 
/// \brief If T is an object type (that is any possibly cv-qualified type other
/// than function, reference, or void types), provides the member constant value
/// equal true. For any other type, value is false.
template <typename T>
struct is_object;
 
#if __has_builtin(__is_object)
template <typename T>
struct is_object : bool_constant<__is_object(T)> { };
 
template <typename T>
inline constexpr bool is_object_v = __is_object(T);
 
#else
 
template <typename T>
struct is_object : bool_constant<is_scalar_v<T> or is_array_v<T> or is_union_v<T> or is_class_v<T> > { };
 
template <typename T>
inline constexpr bool is_object_v = is_object<T>::value;
 
#endif
} // namespace etl
 
#endif // TETL_TYPE_TRAITS_IS_OBJECT_HPP