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Viewing changes to include/builtin-boost/boost/range/detail/difference_type.hpp

Tags: upstream-0.15.3+svn20934
Import upstream version 0.15.3+svn20934

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include/builtin-boost/boost/range/detail/difference_type.hpp
 
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// Boost.Range library
 
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//
 
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//  Copyright Thorsten Ottosen 2003-2004. Use, modification and
 
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//  distribution is subject to the Boost Software License, Version
 
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//  1.0. (See accompanying file LICENSE_1_0.txt or copy at
 
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//  http://www.boost.org/LICENSE_1_0.txt)
 
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//
 
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// For more information, see http://www.boost.org/libs/range/
 
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//
 
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#ifndef BOOST_RANGE_DETAIL_DIFFERENCE_TYPE_HPP
 
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#define BOOST_RANGE_DETAIL_DIFFERENCE_TYPE_HPP
 
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#include <boost/range/detail/common.hpp>
 
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#include <boost/iterator/iterator_traits.hpp>
 
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//////////////////////////////////////////////////////////////////////////////
 
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// missing partial specialization  workaround.
 
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//////////////////////////////////////////////////////////////////////////////
 
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namespace boost 
 
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{
 
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    namespace range_detail 
 
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    {        
 
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        template< typename T >
 
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        struct range_difference_type_;
 
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        template<>
 
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        struct range_difference_type_<std_container_>
 
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        {
 
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            template< typename C >
 
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            struct pts
 
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            {
 
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                typedef BOOST_DEDUCED_TYPENAME C::difference_type type;
 
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            };
 
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        };
 
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        template<>
 
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        struct range_difference_type_<std_pair_>
 
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        {
 
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            template< typename P >
 
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            struct pts
 
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            {
 
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                typedef BOOST_RANGE_DEDUCED_TYPENAME boost::iterator_difference< BOOST_DEDUCED_TYPENAME P::first_type>::type type;                
 
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            };
 
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        };
 
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        template<>
 
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        struct range_difference_type_<array_>
 
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        {
 
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            template< typename A >
 
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            struct pts
 
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            {
 
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                typedef std::ptrdiff_t type;
 
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            };
 
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        };
 
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        template<>
 
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        struct range_difference_type_<char_array_>
 
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        { 
 
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            template< typename A >
 
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            struct pts
 
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            {
 
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                typedef std::ptrdiff_t type;
 
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            };
 
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        };
 
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        template<>
 
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        struct range_difference_type_<char_ptr_>
 
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        {
 
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            template< typename S >
 
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            struct pts
 
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            {
 
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                typedef std::ptrdiff_t type;
 
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            };         
 
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        };
 
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        template<>
 
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        struct range_difference_type_<const_char_ptr_>
 
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        {
 
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            template< typename S >
 
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            struct pts
 
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            {
 
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                typedef std::ptrdiff_t type;
 
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            };         
 
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        };
 
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        template<>
 
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        struct range_difference_type_<wchar_t_ptr_>
 
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        {
 
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            template< typename S >
 
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            struct pts
 
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            {
 
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                typedef std::ptrdiff_t type;
 
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            };         
 
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        };
 
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        template<>
 
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        struct range_difference_type_<const_wchar_t_ptr_>
 
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        {
 
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            template< typename S >
 
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            struct pts
 
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            {
 
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                typedef std::ptrdiff_t type;
 
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            };         
 
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        };
 
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    } 
 
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    template< typename C >
 
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    class range_difference
 
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    {
 
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        typedef BOOST_RANGE_DEDUCED_TYPENAME range_detail::range<C>::type c_type;
 
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    public:
 
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        typedef BOOST_RANGE_DEDUCED_TYPENAME range_detail::range_difference_type_<c_type>::BOOST_NESTED_TEMPLATE pts<C>::type type; 
 
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    };
 
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}
 
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#endif
 
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