forked from boostorg/range
127 lines
3.4 KiB
C++
Executable File
127 lines
3.4 KiB
C++
Executable File
// 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_SUB_RANGE_HPP
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#define BOOST_RANGE_SUB_RANGE_HPP
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#include <boost/range/config.hpp>
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#include <boost/range/iterator_range.hpp>
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#include <boost/range/result_iterator.hpp>
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#include <boost/range/reverse_result_iterator.hpp>
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#include <boost/range/size_type.hpp>
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#include <boost/range/difference_type.hpp>
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//#include <boost/range/rbegin.hpp>
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//#include <boost/range/rend.hpp>
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namespace boost
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{
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template< class Range >
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class sub_range : public iterator_range< BOOST_DEDUCED_TYPENAME result_iterator_of<Range>::type >
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{
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typedef BOOST_DEDUCED_TYPENAME result_iterator_of<Range>::type iterator_t;
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typedef iterator_range< iterator_t > base;
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public:
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using base::iterator;
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using base::const_iterator;
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using base::value_type;
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typedef BOOST_DEDUCED_TYPENAME difference_type_of<Range>::type difference_type;
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typedef BOOST_DEDUCED_TYPENAME size_type_of<Range>::type size_type;
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public:
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template< class Range2 >
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sub_range( Range2& r ) : base( r )
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{ }
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template< class Range2 >
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sub_range( const Range2& r ) : base( r )
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{ }
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template< class Iter >
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sub_range( Iter first, Iter last ) :
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base( first, last )
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{ }
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template< class Range2 >
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sub_range& operator=( Range2& r )
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{
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base::operator=( r );
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return *this;
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}
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template< class Range2 >
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sub_range& operator=( const Range2& r )
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{
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base::operator=( r );
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return *this;
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}
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size_type size() const
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{
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//
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// performance discontinuity problem!!
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//
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return base::size();
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}
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};
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/*
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template< class Range >
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class reverse_sub_range : public iterator_range< BOOST_DEDUCED_TYPENAME reverse_result_iterator_of<Range>::type >
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{
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typedef BOOST_DEDUCED_TYPENAME reverse_result_iterator_of<Range>::type
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iterator_t;
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typedef iterator_range<iterator_t> base;
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public:
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using base::iterator;
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using base::const_iterator;
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using base::value_type;
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using base::difference_type;
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using base::size_type;
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public:
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template< class Range2 >
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reverse_sub_range( Range2& r ) : base( rbegin( r ), rend( r ) )
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{ }
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template< class Range2 >
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reverse_sub_range( const Range2& r ) : base( rbegin( r ), rend( r ) )
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{ }
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template< class Iter >
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reverse_sub_range( Iter first, Iter last ) :
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base( iterator_t( last ), iterator_t( first ) )
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{ }
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template< class Range2 >
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sub_range& operator=( Range2& r )
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{
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base::operator=( r );
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return *this;
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}
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template< class Range2 >
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sub_range& operator=( const Range2& r )
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{
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base::operator=( r );
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return *this;
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}
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};
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*/
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} // namespace 'boost'
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#endif
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