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143 lines
3.5 KiB
143 lines
3.5 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_BEGIN_HPP |
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#define BOOST_RANGE_BEGIN_HPP |
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#if defined(_MSC_VER) && (_MSC_VER >= 1200) |
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# pragma once |
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#endif |
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#include <boost/range/config.hpp> |
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#ifdef BOOST_NO_FUNCTION_TEMPLATE_ORDERING |
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#include <boost/range/detail/begin.hpp> |
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#else |
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#include <boost/range/iterator.hpp> |
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namespace boost |
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{ |
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#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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!BOOST_WORKAROUND(__GNUC__, < 3) \ |
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/**/ |
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namespace range_detail |
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{ |
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#endif |
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////////////////////////////////////////////////////////////////////// |
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// primary template |
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////////////////////////////////////////////////////////////////////// |
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template< typename C > |
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inline BOOST_DEDUCED_TYPENAME range_iterator<C>::type |
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range_begin( C& c ) |
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{ |
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// |
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// If you get a compile-error here, it is most likely because |
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// you have not implemented range_begin() properly in |
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// the namespace of C |
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// |
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return c.begin(); |
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} |
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////////////////////////////////////////////////////////////////////// |
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// pair |
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////////////////////////////////////////////////////////////////////// |
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template< typename Iterator > |
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inline Iterator range_begin( const std::pair<Iterator,Iterator>& p ) |
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{ |
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return p.first; |
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} |
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template< typename Iterator > |
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inline Iterator range_begin( std::pair<Iterator,Iterator>& p ) |
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{ |
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return p.first; |
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} |
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////////////////////////////////////////////////////////////////////// |
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// array |
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////////////////////////////////////////////////////////////////////// |
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// |
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// May this be discarded? Or is it needed for bad compilers? |
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// |
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template< typename T, std::size_t sz > |
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inline const T* range_begin( const T (&a)[sz] ) |
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{ |
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return a; |
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} |
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template< typename T, std::size_t sz > |
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inline T* range_begin( T (&a)[sz] ) |
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{ |
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return a; |
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} |
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#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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!BOOST_WORKAROUND(__GNUC__, < 3) \ |
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/**/ |
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} // namespace 'range_detail' |
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#endif |
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// Use a ADL namespace barrier to avoid ambiguity with other unqualified |
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// calls. This is particularly important with C++0x encouraging |
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// unqualified calls to begin/end. |
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namespace range_adl_barrier |
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{ |
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template< class T > |
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inline BOOST_DEDUCED_TYPENAME range_iterator<T>::type begin( T& r ) |
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{ |
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#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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!BOOST_WORKAROUND(__GNUC__, < 3) \ |
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/**/ |
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using namespace range_detail; |
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#endif |
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return range_begin( r ); |
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} |
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template< class T > |
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inline BOOST_DEDUCED_TYPENAME range_iterator<const T>::type begin( const T& r ) |
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{ |
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#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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!BOOST_WORKAROUND(__GNUC__, < 3) \ |
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/**/ |
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using namespace range_detail; |
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#endif |
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return range_begin( r ); |
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} |
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} // namespace range_adl_barrier |
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} // namespace boost |
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#endif // BOOST_NO_FUNCTION_TEMPLATE_ORDERING |
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namespace boost |
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{ |
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namespace range_adl_barrier |
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{ |
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template< class T > |
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inline BOOST_DEDUCED_TYPENAME range_iterator<const T>::type |
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const_begin( const T& r ) |
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{ |
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return boost::range_adl_barrier::begin( r ); |
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} |
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} // namespace range_adl_barrier |
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using namespace range_adl_barrier; |
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} // namespace boost |
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#endif |
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