williamr@2: // Boost.Range library
williamr@2: //
williamr@2: //  Copyright Thorsten Ottosen 2003-2004. Use, modification and
williamr@2: //  distribution is subject to the Boost Software License, Version
williamr@2: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
williamr@2: //  http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: // For more information, see http://www.boost.org/libs/range/
williamr@2: //
williamr@2: 
williamr@2: #ifndef BOOST_RANGE_DETAIL_COMMON_HPP
williamr@2: #define BOOST_RANGE_DETAIL_COMMON_HPP
williamr@2: 
williamr@2: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
williamr@2: # pragma once
williamr@2: #endif
williamr@2: 
williamr@2: #include <boost/range/config.hpp>
williamr@2: #include <boost/range/detail/sfinae.hpp>
williamr@2: #include <boost/type_traits/is_void.hpp>
williamr@2: #include <boost/type_traits/detail/ice_or.hpp>
williamr@2: #include <boost/mpl/if.hpp>
williamr@2: #include <boost/mpl/int.hpp>
williamr@2: #include <cstddef>
williamr@2: 
williamr@2: //////////////////////////////////////////////////////////////////////////////
williamr@2: // missing partial specialization  workaround.
williamr@2: //////////////////////////////////////////////////////////////////////////////
williamr@2: 
williamr@2: namespace boost 
williamr@2: {
williamr@2:     namespace range_detail 
williamr@2:     {        
williamr@2:         // 1 = std containers
williamr@2:         // 2 = std::pair
williamr@2:         // 3 = const std::pair
williamr@2:         // 4 = array
williamr@2:         // 5 = const array
williamr@2:         // 6 = char array
williamr@2:         // 7 = wchar_t array
williamr@2:         // 8 = char*
williamr@2:         // 9 = const char*
williamr@2:         // 10 = whar_t*
williamr@2:         // 11 = const wchar_t*
williamr@2:         // 12 = string
williamr@2:         
williamr@2:         typedef mpl::int_<1>::type    std_container_;
williamr@2:         typedef mpl::int_<2>::type    std_pair_;
williamr@2:         typedef mpl::int_<3>::type    const_std_pair_;
williamr@2:         typedef mpl::int_<4>::type    array_;
williamr@2:         typedef mpl::int_<5>::type    const_array_;
williamr@2:         typedef mpl::int_<6>::type    char_array_;
williamr@2:         typedef mpl::int_<7>::type    wchar_t_array_;
williamr@2:         typedef mpl::int_<8>::type    char_ptr_;
williamr@2:         typedef mpl::int_<9>::type    const_char_ptr_;
williamr@2:         typedef mpl::int_<10>::type   wchar_t_ptr_;
williamr@2:         typedef mpl::int_<11>::type   const_wchar_t_ptr_;
williamr@2:         typedef mpl::int_<12>::type   string_;
williamr@2:         
williamr@2:         template< typename C >
williamr@2:         struct range_helper
williamr@2:         {
williamr@2:             static C* c;
williamr@2:             static C  ptr;
williamr@2: 
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_pair_                = sizeof( boost::range_detail::is_pair_impl( c ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_char_ptr_            = sizeof( boost::range_detail::is_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_const_char_ptr_      = sizeof( boost::range_detail::is_const_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_wchar_t_ptr_         = sizeof( boost::range_detail::is_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_const_wchar_t_ptr_   = sizeof( boost::range_detail::is_const_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_char_array_          = sizeof( boost::range_detail::is_char_array_impl( ptr ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_wchar_t_array_       = sizeof( boost::range_detail::is_wchar_t_array_impl( ptr ) ) == sizeof( yes_type ) );
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_string_              = (boost::type_traits::ice_or<is_const_char_ptr_, is_const_wchar_t_ptr_>::value ));
williamr@2:             BOOST_STATIC_CONSTANT( bool, is_array_               = boost::is_array<C>::value );
williamr@2:             
williamr@2:         };
williamr@2:         
williamr@2:         template< typename C >
williamr@2:         class range
williamr@2:         {
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_pair_,
williamr@2:                                                                   boost::range_detail::std_pair_,
williamr@2:                                                                   void >::type pair_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_array_,
williamr@2:                                                                     boost::range_detail::array_,
williamr@2:                                                                     pair_t >::type array_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_string_,
williamr@2:                                                                     boost::range_detail::string_,
williamr@2:                                                                     array_t >::type string_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_char_ptr_,
williamr@2:                                                                     boost::range_detail::const_char_ptr_,
williamr@2:                                                                     string_t >::type const_char_ptr_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_ptr_,
williamr@2:                                                                     boost::range_detail::char_ptr_,
williamr@2:                                                                     const_char_ptr_t >::type char_ptr_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_wchar_t_ptr_,
williamr@2:                                                                     boost::range_detail::const_wchar_t_ptr_,
williamr@2:                                                                     char_ptr_t >::type const_wchar_ptr_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_ptr_,
williamr@2:                                                                     boost::range_detail::wchar_t_ptr_,
williamr@2:                                                                     const_wchar_ptr_t >::type wchar_ptr_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_array_,
williamr@2:                                                                     boost::range_detail::wchar_t_array_,
williamr@2:                                                                     wchar_ptr_t >::type wchar_array_t;
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_array_,
williamr@2:                                                                     boost::range_detail::char_array_,
williamr@2:                                                                     wchar_array_t >::type char_array_t;
williamr@2:         public:
williamr@2:             typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::is_void<char_array_t>::value,
williamr@2:                                                                     boost::range_detail::std_container_,
williamr@2:                                                                     char_array_t >::type type;  
williamr@2:         }; // class 'range' 
williamr@2:     }
williamr@2: }
williamr@2:         
williamr@2: #endif