| // 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_CONST_ITERATOR_HPP |
| #define BOOST_RANGE_CONST_ITERATOR_HPP |
| |
| #if defined(_MSC_VER) |
| # pragma once |
| #endif |
| |
| #include <boost/range/config.hpp> |
| |
| #include <boost/range/range_fwd.hpp> |
| #include <boost/range/detail/extract_optional_type.hpp> |
| #include <boost/type_traits/remove_const.hpp> |
| #include <boost/type_traits/remove_reference.hpp> |
| #include <cstddef> |
| #include <utility> |
| |
| namespace boost |
| { |
| ////////////////////////////////////////////////////////////////////////// |
| // default |
| ////////////////////////////////////////////////////////////////////////// |
| |
| namespace range_detail |
| { |
| |
| BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( const_iterator ) |
| |
| template< typename C > |
| struct range_const_iterator |
| : extract_const_iterator<C> |
| {}; |
| |
| ////////////////////////////////////////////////////////////////////////// |
| // pair |
| ////////////////////////////////////////////////////////////////////////// |
| |
| template< typename Iterator > |
| struct range_const_iterator<std::pair<Iterator,Iterator> > |
| { |
| typedef Iterator type; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////// |
| // array |
| ////////////////////////////////////////////////////////////////////////// |
| |
| template< typename T, std::size_t sz > |
| struct range_const_iterator< T[sz] > |
| { |
| typedef const T* type; |
| }; |
| |
| } // namespace range_detail |
| |
| template<typename C, typename Enabler=void> |
| struct range_const_iterator |
| : range_detail::range_const_iterator< |
| BOOST_DEDUCED_TYPENAME remove_reference<C>::type |
| > |
| { |
| }; |
| |
| } // namespace boost |
| |
| |
| #endif |