160 lines
4.6 KiB
C++
160 lines
4.6 KiB
C++
// 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_SIZE_HPP
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#define BOOST_RANGE_DETAIL_SIZE_HPP
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#include <boost/config.hpp> // BOOST_MSVC
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#include <boost/detail/workaround.hpp>
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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# include <boost/range/detail/vc6/size.hpp>
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#else
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# include <boost/range/detail/implementation_help.hpp>
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# include <boost/range/detail/size_type.hpp>
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# include <boost/range/detail/common.hpp>
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# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
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# include <boost/range/detail/remove_extent.hpp>
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# endif
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# include <iterator>
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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_size_;
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//////////////////////////////////////////////////////////////////////
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// default
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//////////////////////////////////////////////////////////////////////
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template<>
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struct range_size_<std_container_>
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{
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template< typename C >
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static BOOST_RANGE_DEDUCED_TYPENAME C::size_type fun( const C& c )
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{
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return c.size();
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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_size_<std_pair_>
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{
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template< typename P >
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static BOOST_RANGE_DEDUCED_TYPENAME range_size<P>::type
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fun( const P& p )
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{
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return std::distance( p.first, p.second );
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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_size_<array_>
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{
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#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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template< typename T, std::size_t sz >
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static std::size_t fun( T BOOST_RANGE_ARRAY_REF()[sz] )
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{
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return sz;
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}
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#else
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template<typename T>
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static std::size_t fun(T& t)
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{
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return remove_extent<T>::size;
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}
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#endif
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};
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template<>
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struct range_size_<char_array_>
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{
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template< typename T, std::size_t sz >
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static std::size_t fun( T BOOST_RANGE_ARRAY_REF()[sz] )
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{
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return boost::range_detail::array_size( boost_range_array );
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}
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};
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template<>
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struct range_size_<wchar_t_array_>
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{
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template< typename T, std::size_t sz >
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static std::size_t fun( T BOOST_RANGE_ARRAY_REF()[sz] )
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{
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return boost::range_detail::array_size( boost_range_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_size_<char_ptr_>
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{
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static std::size_t fun( const char* s )
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{
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return boost::range_detail::str_size( s );
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}
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};
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template<>
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struct range_size_<const_char_ptr_>
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{
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static std::size_t fun( const char* s )
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{
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return boost::range_detail::str_size( s );
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}
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};
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template<>
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struct range_size_<wchar_t_ptr_>
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{
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static std::size_t fun( const wchar_t* s )
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{
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return boost::range_detail::str_size( s );
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}
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};
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template<>
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struct range_size_<const_wchar_t_ptr_>
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{
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static std::size_t fun( const wchar_t* s )
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{
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return boost::range_detail::str_size( s );
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}
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};
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} // namespace 'range_detail'
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template< typename C >
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BOOST_RANGE_DEDUCED_TYPENAME range_size<C>::type
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size( const C& c )
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{
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return range_detail::range_size_< BOOST_RANGE_DEDUCED_TYPENAME range_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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#endif
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