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94 lines
2.6 KiB
94 lines
2.6 KiB
// 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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