// Boost.Range library
//
//  Copyright Thorsten Ottosen 2003-2004. Use, modification and
//  distribution is subject to 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)
//
// For more information, see http://www.boost.org/libs/range/
//

#ifndef BOOST_RANGE_DETAIL_COMMON_HPP
#define BOOST_RANGE_DETAIL_COMMON_HPP

#if defined(_MSC_VER)
# pragma once
#endif

#include <boost/range/config.hpp>
#include <boost/range/detail/sfinae.hpp>
#include <boost/type_traits/is_void.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/int.hpp>
#include <cstddef>

//////////////////////////////////////////////////////////////////////////////
// missing partial specialization  workaround.
//////////////////////////////////////////////////////////////////////////////

namespace boost {
namespace range_detail {
// 1 = std containers
// 2 = std::pair
// 3 = const std::pair
// 4 = array
// 5 = const array
// 6 = char array
// 7 = wchar_t array
// 8 = char*
// 9 = const char*
// 10 = whar_t*
// 11 = const wchar_t*
// 12 = string

typedef mpl::int_<1>::type    std_container_;
typedef mpl::int_<2>::type    std_pair_;
typedef mpl::int_<3>::type    const_std_pair_;
typedef mpl::int_<4>::type    array_;
typedef mpl::int_<5>::type    const_array_;
typedef mpl::int_<6>::type    char_array_;
typedef mpl::int_<7>::type    wchar_t_array_;
typedef mpl::int_<8>::type    char_ptr_;
typedef mpl::int_<9>::type    const_char_ptr_;
typedef mpl::int_<10>::type   wchar_t_ptr_;
typedef mpl::int_<11>::type   const_wchar_t_ptr_;
typedef mpl::int_<12>::type   string_;

template< typename C >
struct range_helper
{
    static C* c;
    static C  ptr;

    BOOST_STATIC_CONSTANT( bool, is_pair_                = sizeof( boost::range_detail::is_pair_impl( c ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_char_ptr_            = sizeof( boost::range_detail::is_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_const_char_ptr_      = sizeof( boost::range_detail::is_const_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_wchar_t_ptr_         = sizeof( boost::range_detail::is_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_const_wchar_t_ptr_   = sizeof( boost::range_detail::is_const_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_char_array_          = sizeof( boost::range_detail::is_char_array_impl( ptr ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_wchar_t_array_       = sizeof( boost::range_detail::is_wchar_t_array_impl( ptr ) ) == sizeof( yes_type ) );
    BOOST_STATIC_CONSTANT( bool, is_string_              = (is_const_char_ptr_ || is_const_wchar_t_ptr_));
    BOOST_STATIC_CONSTANT( bool, is_array_               = boost::is_array<C>::value );

};

template< typename C >
class range
{
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_pair_,
            boost::range_detail::std_pair_,
            void >::type pair_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_array_,
            boost::range_detail::array_,
            pair_t >::type array_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_string_,
            boost::range_detail::string_,
            array_t >::type string_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_char_ptr_,
            boost::range_detail::const_char_ptr_,
            string_t >::type const_char_ptr_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_ptr_,
            boost::range_detail::char_ptr_,
            const_char_ptr_t >::type char_ptr_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_wchar_t_ptr_,
            boost::range_detail::const_wchar_t_ptr_,
            char_ptr_t >::type const_wchar_ptr_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_ptr_,
            boost::range_detail::wchar_t_ptr_,
            const_wchar_ptr_t >::type wchar_ptr_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_array_,
            boost::range_detail::wchar_t_array_,
            wchar_ptr_t >::type wchar_array_t;
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_array_,
            boost::range_detail::char_array_,
            wchar_array_t >::type char_array_t;
  public:
    typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::is_void<char_array_t>::value,
            boost::range_detail::std_container_,
            char_array_t >::type type;
}; // class 'range'
}
}

#endif
