boost/container/detail/mpl.hpp
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2005-2013.
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_CONTAINER_DETAIL_MPL_HPP
#define BOOST_CONTAINER_CONTAINER_DETAIL_MPL_HPP
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
#include <boost/move/detail/type_traits.hpp>
#include <boost/intrusive/detail/mpl.hpp>
#include <cstddef>
namespace boost {
namespace container {
namespace dtl {
using boost::move_detail::integral_constant;
using boost::move_detail::true_type;
using boost::move_detail::false_type;
using boost::move_detail::enable_if_c;
using boost::move_detail::enable_if;
using boost::move_detail::enable_if_convertible;
using boost::move_detail::disable_if_c;
using boost::move_detail::disable_if;
using boost::move_detail::disable_if_convertible;
using boost::move_detail::is_convertible;
using boost::move_detail::if_c;
using boost::move_detail::if_;
using boost::move_detail::identity;
using boost::move_detail::bool_;
using boost::move_detail::true_;
using boost::move_detail::false_;
using boost::move_detail::yes_type;
using boost::move_detail::no_type;
using boost::move_detail::bool_;
using boost::move_detail::true_;
using boost::move_detail::false_;
using boost::move_detail::unvoid_ref;
using boost::move_detail::and_;
using boost::move_detail::or_;
using boost::move_detail::not_;
using boost::move_detail::enable_if_and;
using boost::move_detail::disable_if_and;
using boost::move_detail::enable_if_or;
using boost::move_detail::disable_if_or;
using boost::move_detail::remove_const;
template <class FirstType>
struct select1st
{
typedef FirstType type;
template<class T>
BOOST_CONTAINER_FORCEINLINE const type& operator()(const T& x) const
{ return x.first; }
template<class T>
BOOST_CONTAINER_FORCEINLINE type& operator()(T& x)
{ return const_cast<type&>(x.first); }
};
template<typename T>
struct void_t { typedef void type; };
template <class T, class=void>
struct is_transparent_base
{
static const bool value = false;
};
template <class T>
struct is_transparent_base<T, typename void_t<typename T::is_transparent>::type>
{
static const bool value = true;
};
template <class T>
struct is_transparent
: is_transparent_base<T>
{};
template <typename C, class /*Dummy*/, typename R>
struct enable_if_transparent
: boost::move_detail::enable_if_c<dtl::is_transparent<C>::value, R>
{};
#ifndef BOOST_CONTAINER_NO_CXX17_CTAD
// void_t (void_t for C++11)
template<typename...> using variadic_void_t = void;
// Trait to detect Allocator-like types.
template<typename Allocator, typename = void>
struct is_allocator
{
static const bool value = false;
};
template <typename T>
T&& ctad_declval();
template<typename Allocator>
struct is_allocator < Allocator,
variadic_void_t< typename Allocator::value_type
, decltype(ctad_declval<Allocator&>().allocate(size_t{})) >>
{
static const bool value = true;
};
template<class T>
using require_allocator_t = typename enable_if_c<is_allocator<T>::value, T>::type;
template<class T>
using require_nonallocator_t = typename enable_if_c<!is_allocator<T>::value, T>::type;
#endif
} //namespace dtl {
} //namespace container {
} //namespace boost {
#include <boost/container/detail/config_end.hpp>
#endif //#ifndef BOOST_CONTAINER_CONTAINER_DETAIL_MPL_HPP