FM / flatten

/usr/include/boost/fusion/view/flatten_view/

/usr/include/boost/fusion/view/flatten_view

Name	Size	Mode	Actions
flatten_view.hpp	3917	0644	edit dl rm
flatten_view_iterator.hpp	6645	0644	edit dl rm

Edit: /usr/include/boost/fusion/view/flatten_view/flatten_view.hpp (3917B)

/*==============================================================================
    Copyright (c) 2013 Jamboree

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)
==============================================================================*/
#ifndef BOOST_FUSION_FLATTEN_VIEW_HPP_INCLUDED
#define BOOST_FUSION_FLATTEN_VIEW_HPP_INCLUDED

#include <boost/fusion/support/config.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/single_view.hpp>
#include <boost/fusion/support/detail/access.hpp>
#include <boost/fusion/support/is_view.hpp>
#include <boost/fusion/support/category_of.hpp>
#include <boost/fusion/support/sequence_base.hpp>
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>
#include <boost/fusion/view/flatten_view/flatten_view_iterator.hpp>

namespace boost { namespace fusion
{
    struct forward_traversal_tag;
    struct flatten_view_tag;

template <typename Sequence>
    struct flatten_view
      : sequence_base<flatten_view<Sequence> >
    {
        typedef flatten_view_tag fusion_tag;
        typedef fusion_sequence_tag tag; // this gets picked up by MPL
        typedef mpl::true_ is_view;
        typedef forward_traversal_tag category;

typedef Sequence sequence_type;
        typedef typename result_of::begin<Sequence>::type first_type;
        typedef typename result_of::end<Sequence>::type last_type;

BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
        explicit flatten_view(Sequence& seq)
          : seq(seq)
        {}

BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
        first_type first() const { return fusion::begin(seq); }
        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
        last_type last() const { return fusion::end(seq); }

typename mpl::if_<traits::is_view<Sequence>, Sequence, Sequence&>::type seq;
    };
}}

namespace boost { namespace fusion { namespace extension
{
    template<>
    struct begin_impl<flatten_view_tag>
    {
        template<typename Sequence>
        struct apply
        {
            typedef typename Sequence::first_type first_type;

typedef typename
                    result_of::begin<
                        mpl::single_view<
                            typename Sequence::sequence_type> >::type
            root_iterator;

typedef
                detail::seek_descent<root_iterator, first_type>
            seek_descent;

typedef typename seek_descent::type type;

BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
            static inline
            type call(Sequence& seq)
            {
                return seek_descent::apply(root_iterator(), seq.first());
            }
        };
    };

template<>
    struct end_impl<flatten_view_tag>
    {
        template<typename Sequence>
        struct apply
        {
            typedef typename Sequence::last_type last_type;

typedef typename
                    result_of::end<
                        mpl::single_view<
                            typename Sequence::sequence_type> >::type
            type;

BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
            static inline
            type call(Sequence&)
            {
                return type();
            }
        };
    };

template<>
    struct size_impl<flatten_view_tag>
    {
        template <typename Sequence>
        struct apply
          : result_of::distance
            <
                typename result_of::begin<Sequence>::type
              , typename result_of::end<Sequence>::type
            >
        {};
    };

template<>
    struct empty_impl<flatten_view_tag>
    {
        template <typename Sequence>
        struct apply
          : result_of::empty<typename Sequence::sequence_type>
        {};
    };
}}}

#endif

/*============================================================================== Copyright (c) 2013 Jamboree 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) ==============================================================================*/ #ifndef BOOST_FUSION_FLATTEN_VIEW_HPP_INCLUDED #define BOOST_FUSION_FLATTEN_VIEW_HPP_INCLUDED #include #include #include #include #include #include #include #include #include #include namespace boost { namespace fusion { struct forward_traversal_tag; struct flatten_view_tag; template struct flatten_view : sequence_base > { typedef flatten_view_tag fusion_tag; typedef fusion_sequence_tag tag; // this gets picked up by MPL typedef mpl::true_ is_view; typedef forward_traversal_tag category; typedef Sequence sequence_type; typedef typename result_of::begin::type first_type; typedef typename result_of::end::type last_type; BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED explicit flatten_view(Sequence& seq) : seq(seq) {} BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED first_type first() const { return fusion::begin(seq); } BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED last_type last() const { return fusion::end(seq); } typename mpl::if_, Sequence, Sequence&>::type seq; }; }} namespace boost { namespace fusion { namespace extension { template<> struct begin_impl { template struct apply { typedef typename Sequence::first_type first_type; typedef typename result_of::begin< mpl::single_view< typename Sequence::sequence_type> >::type root_iterator; typedef detail::seek_descent seek_descent; typedef typename seek_descent::type type; BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED static inline type call(Sequence& seq) { return seek_descent::apply(root_iterator(), seq.first()); } }; }; template<> struct end_impl { template struct apply { typedef typename Sequence::last_type last_type; typedef typename result_of::end< mpl::single_view< typename Sequence::sequence_type> >::type type; BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED static inline type call(Sequence&) { return type(); } }; }; template<> struct size_impl { template struct apply : result_of::distance < typename result_of::begin::type , typename result_of::end::type > {}; }; template<> struct empty_impl { template struct apply : result_of::empty {}; }; }}} #endif