forked from boostorg/range
121 lines
3.1 KiB
C++
Executable File
121 lines
3.1 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_DETAIL_BEGIN_HPP
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#define BOOST_RANGE_DETAIL_BEGIN_HPP
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#include <boost/range/result_iterator.hpp>
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#include <boost/range/detail/common.hpp>
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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_CT_DEDUCED_TYPENAME result_iterator_of<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_CT_DEDUCED_TYPENAME result_iterator_of<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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template< typename T, std::size_t sz >
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static T* fun( T BOOST_ARRAY_REF[sz] )
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{
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return array;
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}
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};
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//////////////////////////////////////////////////////////////////////
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// string
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//////////////////////////////////////////////////////////////////////
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template<>
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struct range_begin<char_ptr_>
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{
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static char* fun( char* s )
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{
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return s;
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}
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};
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template<>
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struct range_begin<const_char_ptr_>
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{
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static const char* fun( const char* s )
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{
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return s;
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}
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};
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template<>
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struct range_begin<wchar_t_ptr_>
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{
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static wchar_t* fun( wchar_t* s )
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{
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return s;
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}
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};
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template<>
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struct range_begin<const_wchar_t_ptr_>
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{
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static const wchar_t* fun( const wchar_t* s )
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{
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return s;
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}
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};
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} // namespace 'range_traits_detail'
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template< typename C >
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inline BOOST_DEDUCED_TYPENAME result_iterator_of<C>::type
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begin( C& c )
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{
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return range_traits_detail::range_begin< BOOST_DEDUCED_TYPENAME range_traits_detail::range<C>::type >::fun( c );
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}
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} // namespace 'boost'
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#endif
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