/*=============================================================================
    Copyright (c) 2001-2007 Joel de Guzman
    Copyright (c) 2009-2011 Christopher Schmidt

    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)
==============================================================================*/

//#define BOOST_PP_VARIADICS

#ifndef BOOST_FUSION_ADAPTED_STRUCT_ADAPT_STRUCT_HPP
#define BOOST_FUSION_ADAPTED_STRUCT_ADAPT_STRUCT_HPP

#include <boost/fusion/support/config.hpp>

#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/empty.hpp>
#include <boost/preprocessor/variadic.hpp>
#include <boost/type_traits/add_reference.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/type_traits/add_const.hpp>
#include <boost/type_traits/remove_const.hpp>

#include <boost/fusion/adapted/struct/detail/extension.hpp>
#include <boost/fusion/adapted/struct/detail/adapt_base.hpp>
#include <boost/fusion/adapted/struct/detail/at_impl.hpp>
#include <boost/fusion/adapted/struct/detail/is_view_impl.hpp>
#include <boost/fusion/adapted/struct/detail/is_sequence_impl.hpp>
#include <boost/fusion/adapted/struct/detail/value_at_impl.hpp>
#include <boost/fusion/adapted/struct/detail/category_of_impl.hpp>
#include <boost/fusion/adapted/struct/detail/size_impl.hpp>
#include <boost/fusion/adapted/struct/detail/begin_impl.hpp>
#include <boost/fusion/adapted/struct/detail/end_impl.hpp>
#include <boost/fusion/adapted/struct/detail/value_of_impl.hpp>
#include <boost/fusion/adapted/struct/detail/deref_impl.hpp>

//TODO: Write a variadic version full : with variadic also directly to provide the fields.
#if BOOST_PP_VARIADICS

#define BOOST_FUSION_ADAPT_STRUCT_FILLER_0(...)                                 \
    ((BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), (__VA_ARGS__)))                      \
    BOOST_FUSION_ADAPT_STRUCT_FILLER_1
#define BOOST_FUSION_ADAPT_STRUCT_FILLER_1(...)                                 \
    ((BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), (__VA_ARGS__)))                      \
    BOOST_FUSION_ADAPT_STRUCT_FILLER_0

#define BOOST_FUSION_ADAPT_STRUCT_FILLER_0_END
#define BOOST_FUSION_ADAPT_STRUCT_FILLER_1_END

#else

#define BOOST_FUSION_ADAPT_STRUCT_FILLER_0(X, Y)                                \
    ((2, (X, Y))) BOOST_FUSION_ADAPT_STRUCT_FILLER_1
#define BOOST_FUSION_ADAPT_STRUCT_FILLER_1(X, Y)                                \
    ((2, (X, Y))) BOOST_FUSION_ADAPT_STRUCT_FILLER_0
#define BOOST_FUSION_ADAPT_STRUCT_FILLER_0_END
#define BOOST_FUSION_ADAPT_STRUCT_FILLER_1_END

#endif

#define BOOST_FUSION_ADAPT_STRUCT_C(TEMPLATE_PARAMS_SEQ, NAME_SEQ, I, ATTRIBUTE)\
    BOOST_FUSION_ADAPT_STRUCT_C_BASE(                                           \
        TEMPLATE_PARAMS_SEQ,                                                    \
        NAME_SEQ,                                                               \
        I,                                                                      \
        BOOST_PP_EMPTY,                                                         \
        BOOST_PP_TUPLE_ELEM(2, 1, ATTRIBUTE),                                   \
        BOOST_PP_TUPLE_ELEM(2, 0, ATTRIBUTE))

#define BOOST_FUSION_ADAPT_TPL_STRUCT(TEMPLATE_PARAMS_SEQ,NAME_SEQ, ATTRIBUTES) \
    BOOST_FUSION_ADAPT_STRUCT_BASE(                                             \
        (1)TEMPLATE_PARAMS_SEQ,                                                 \
        (1)NAME_SEQ,                                                            \
        struct_tag,                                                             \
        0,                                                                      \
        ((0,0)) BOOST_PP_CAT(                                                   \
            BOOST_FUSION_ADAPT_STRUCT_FILLER_0 ATTRIBUTES,_END),                \
        BOOST_FUSION_ADAPT_STRUCT_C)

#define BOOST_FUSION_ADAPT_STRUCT(NAME, ATTRIBUTES)                             \
    BOOST_FUSION_ADAPT_STRUCT_BASE(                                             \
        (0),                                                                    \
        (0)(NAME),                                                              \
        struct_tag,                                                             \
        0,                                                                      \
        BOOST_PP_CAT( BOOST_FUSION_ADAPT_STRUCT_FILLER_0(0,0)ATTRIBUTES,_END),  \
        BOOST_FUSION_ADAPT_STRUCT_C)

#define BOOST_FUSION_ADAPT_STRUCT_AS_VIEW(NAME, ATTRIBUTES)                     \
    BOOST_FUSION_ADAPT_STRUCT_BASE(                                             \
        (0),                                                                    \
        (0)(NAME),                                                              \
        struct_tag,                                                             \
        1,                                                                      \
        BOOST_PP_CAT(BOOST_FUSION_ADAPT_STRUCT_FILLER_0(0,0)ATTRIBUTES,_END),   \
        BOOST_FUSION_ADAPT_STRUCT_C)

#endif