| // 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/type_traits/detail/ice_or.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_ = (boost::type_traits::ice_or<is_const_char_ptr_, is_const_wchar_t_ptr_>::value )); |
| 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 |
| |