78 lines
2.3 KiB
Plaintext
78 lines
2.3 KiB
Plaintext
|
/*=============================================================================
|
||
|
|
Copyright (c) 2001-2011 Joel de Guzman
|
||
|
|
|
||
|
|
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)
|
||
|
|
==============================================================================*/
|
||
|
|
#if !defined(FUSION_IS_SEQUENCE_05052005_1002)
|
||
|
|
#define FUSION_IS_SEQUENCE_05052005_1002
|
||
|
|
|
||
|
|
#include <boost/fusion/support/config.hpp>
|
||
|
|
#include <boost/fusion/support/sequence_base.hpp>
|
||
|
|
#include <boost/fusion/support/tag_of.hpp>
|
||
|
|
#include <boost/mpl/is_sequence.hpp>
|
||
|
|
#include <boost/mpl/or.hpp>
|
||
|
|
#include <boost/mpl/bool.hpp>
|
||
|
|
#include <boost/type_traits/is_convertible.hpp>
|
||
|
|
#include <boost/type_traits/is_same.hpp>
|
||
|
|
|
||
|
|
namespace boost { namespace fusion
|
||
|
|
{
|
||
|
|
// Special tags:
|
||
|
|
struct non_fusion_tag;
|
||
|
|
struct boost_tuple_tag; // boost::tuples::tuple tag
|
||
|
|
struct boost_array_tag; // boost::array tag
|
||
|
|
struct mpl_sequence_tag; // mpl sequence tag
|
||
|
|
struct std_pair_tag; // std::pair tag
|
||
|
|
|
||
|
|
namespace extension
|
||
|
|
{
|
||
|
|
template <typename T>
|
||
|
|
struct is_sequence_impl
|
||
|
|
{
|
||
|
|
template <typename Sequence>
|
||
|
|
struct apply
|
||
|
|
: is_convertible<Sequence, fusion::detail::from_sequence_convertible_type>
|
||
|
|
{};
|
||
|
|
};
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct is_sequence_impl<non_fusion_tag>
|
||
|
|
{
|
||
|
|
template <typename T>
|
||
|
|
struct apply : mpl::false_ {};
|
||
|
|
};
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct is_sequence_impl<boost_tuple_tag>;
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct is_sequence_impl<boost_array_tag>;
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct is_sequence_impl<mpl_sequence_tag>;
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct is_sequence_impl<std_pair_tag>;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace traits
|
||
|
|
{
|
||
|
|
template <typename T>
|
||
|
|
struct is_sequence
|
||
|
|
: mpl::bool_<
|
||
|
|
(bool)extension::is_sequence_impl<
|
||
|
|
typename fusion::detail::tag_of<T>::type
|
||
|
|
>::template apply<T>::type::value
|
||
|
|
>
|
||
|
|
{};
|
||
|
|
|
||
|
|
template <typename Sequence, typename Enable = void>
|
||
|
|
struct is_native_fusion_sequence
|
||
|
|
: is_convertible<Sequence, fusion::detail::from_sequence_convertible_type>
|
||
|
|
{};
|
||
|
|
}
|
||
|
|
}}
|
||
|
|
|
||
|
|
#endif
|