Chris@16: // Boost.Range library
Chris@16: //
Chris@16: //  Copyright Thorsten Ottosen 2003-2004. Use, modification and
Chris@16: //  distribution is subject to the Boost Software License, Version
Chris@16: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // For more information, see http://www.boost.org/libs/range/
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_RANGE_CONST_ITERATOR_HPP
Chris@16: #define BOOST_RANGE_CONST_ITERATOR_HPP
Chris@16: 
Chris@101: #if defined(_MSC_VER)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/range/config.hpp>
Chris@16: 
Chris@101: #include <boost/range/range_fwd.hpp>
Chris@16: #include <boost/range/detail/extract_optional_type.hpp>
Chris@16: #include <boost/type_traits/remove_const.hpp>
Chris@101: #include <boost/type_traits/remove_reference.hpp>
Chris@16: #include <cstddef>
Chris@16: #include <utility>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:     //////////////////////////////////////////////////////////////////////////
Chris@16:     // default
Chris@16:     //////////////////////////////////////////////////////////////////////////
Chris@16:     
Chris@101:     namespace range_detail
Chris@101:     {
Chris@16: 
Chris@101: BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( const_iterator )
Chris@16: 
Chris@101: template< typename C >
Chris@101: struct range_const_iterator
Chris@101:         : extract_const_iterator<C>
Chris@101: {};
Chris@16: 
Chris@101: //////////////////////////////////////////////////////////////////////////
Chris@101: // pair
Chris@101: //////////////////////////////////////////////////////////////////////////
Chris@101: 
Chris@101: template< typename Iterator >
Chris@101: struct range_const_iterator<std::pair<Iterator,Iterator> >
Chris@101: {
Chris@101:     typedef Iterator type;
Chris@101: };
Chris@101: 
Chris@101: //////////////////////////////////////////////////////////////////////////
Chris@101: // array
Chris@101: //////////////////////////////////////////////////////////////////////////
Chris@101: 
Chris@101: template< typename T, std::size_t sz >
Chris@101: struct range_const_iterator< T[sz] >
Chris@101: {
Chris@101:     typedef const T* type;
Chris@101: };
Chris@101: 
Chris@101:     } // namespace range_detail
Chris@101: 
Chris@101: template<typename C, typename Enabler=void>
Chris@101: struct range_const_iterator
Chris@101:         : range_detail::range_const_iterator<
Chris@101:             BOOST_DEDUCED_TYPENAME remove_reference<C>::type
Chris@101:         >
Chris@101: {
Chris@101: };
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: 
Chris@16: #endif