95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
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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_BEGIN_HPP
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#define BOOST_RANGE_DETAIL_BEGIN_HPP
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#include <boost/config.hpp> // BOOST_MSVC
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#include <boost/detail/workaround.hpp>
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#include <boost/range/iterator.hpp>
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#include <boost/range/detail/common.hpp>
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1310)
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# include <boost/range/value_type.hpp>
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#endif
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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_begin;
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//////////////////////////////////////////////////////////////////////
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// default
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//////////////////////////////////////////////////////////////////////
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template<>
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struct range_begin<std_container_>
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{
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template< typename C >
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static BOOST_RANGE_DEDUCED_TYPENAME range_iterator<C>::type fun( C& c )
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{
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return c.begin();
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};
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};
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//////////////////////////////////////////////////////////////////////
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// pair
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//////////////////////////////////////////////////////////////////////
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template<>
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struct range_begin<std_pair_>
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{
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template< typename P >
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static BOOST_RANGE_DEDUCED_TYPENAME range_iterator<P>::type fun( const P& p )
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{
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return p.first;
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}
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};
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//////////////////////////////////////////////////////////////////////
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// array
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//////////////////////////////////////////////////////////////////////
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template<>
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struct range_begin<array_>
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{
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#if !BOOST_WORKAROUND(BOOST_MSVC, < 1310)
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template< typename T, std::size_t sz >
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static T* fun( T BOOST_RANGE_ARRAY_REF()[sz] )
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{
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return boost_range_array;
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}
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#else
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template<typename T>
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static BOOST_RANGE_DEDUCED_TYPENAME range_value<T>::type* fun(T& t)
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{
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return t;
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}
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#endif
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};
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} // namespace 'range_detail'
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namespace range_adl_barrier
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{
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template< typename C >
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inline BOOST_RANGE_DEDUCED_TYPENAME range_iterator<C>::type
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begin( C& c )
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{
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return range_detail::range_begin< BOOST_RANGE_DEDUCED_TYPENAME range_detail::range<C>::type >::fun( c );
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}
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}
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} // namespace 'boost'
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#endif
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