138 lines
3.5 KiB
C++
Executable File
138 lines
3.5 KiB
C++
Executable File
// Boost.Range library
|
|
//
|
|
// Copyright Thorsten Ottosen 2003-2004. Use, modification and
|
|
// distribution is subject to the Boost Software License, Version
|
|
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
// For more information, see http://www.boost.org/libs/range/
|
|
//
|
|
|
|
#ifndef BOOST_RANGE_BEGIN_HPP
|
|
#define BOOST_RANGE_BEGIN_HPP
|
|
|
|
#if defined(_MSC_VER)
|
|
# pragma once
|
|
#endif
|
|
|
|
#include <boost/range/config.hpp>
|
|
|
|
#include <boost/range/iterator.hpp>
|
|
#include <boost/config.hpp>
|
|
#include <boost/config/workaround.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
|
|
#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
|
|
namespace range_detail
|
|
{
|
|
#endif
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// primary template
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
template< typename C >
|
|
BOOST_CONSTEXPR inline BOOST_DEDUCED_TYPENAME range_iterator<C>::type
|
|
range_begin( C& c )
|
|
{
|
|
//
|
|
// If you get a compile-error here, it is most likely because
|
|
// you have not implemented range_begin() properly in
|
|
// the namespace of C
|
|
//
|
|
return c.begin();
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// pair
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
template< typename Iterator >
|
|
BOOST_CONSTEXPR inline Iterator range_begin( const std::pair<Iterator,Iterator>& p )
|
|
{
|
|
return p.first;
|
|
}
|
|
|
|
template< typename Iterator >
|
|
BOOST_CONSTEXPR inline Iterator range_begin( std::pair<Iterator,Iterator>& p )
|
|
{
|
|
return p.first;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// array
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
//
|
|
// May this be discarded? Or is it needed for bad compilers?
|
|
//
|
|
template< typename T, std::size_t sz >
|
|
BOOST_CONSTEXPR inline const T* range_begin( const T (&a)[sz] ) BOOST_NOEXCEPT
|
|
{
|
|
return a;
|
|
}
|
|
|
|
template< typename T, std::size_t sz >
|
|
BOOST_CONSTEXPR inline T* range_begin( T (&a)[sz] ) BOOST_NOEXCEPT
|
|
{
|
|
return a;
|
|
}
|
|
|
|
|
|
#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
|
|
} // namespace 'range_detail'
|
|
#endif
|
|
|
|
// Use a ADL namespace barrier to avoid ambiguity with other unqualified
|
|
// calls. This is particularly important with C++0x encouraging
|
|
// unqualified calls to begin/end.
|
|
namespace range_adl_barrier
|
|
{
|
|
|
|
template< class T >
|
|
#if !BOOST_WORKAROUND(BOOST_GCC, < 40700)
|
|
BOOST_CONSTEXPR
|
|
#endif
|
|
inline BOOST_DEDUCED_TYPENAME range_iterator<T>::type begin( T& r )
|
|
{
|
|
#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
|
|
using namespace range_detail;
|
|
#endif
|
|
return range_begin( r );
|
|
}
|
|
|
|
template< class T >
|
|
#if !BOOST_WORKAROUND(BOOST_GCC, < 40700)
|
|
BOOST_CONSTEXPR
|
|
#endif
|
|
inline BOOST_DEDUCED_TYPENAME range_iterator<const T>::type begin( const T& r )
|
|
{
|
|
#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
|
|
using namespace range_detail;
|
|
#endif
|
|
return range_begin( r );
|
|
}
|
|
|
|
} // namespace range_adl_barrier
|
|
} // namespace boost
|
|
|
|
namespace boost
|
|
{
|
|
namespace range_adl_barrier
|
|
{
|
|
template< class T >
|
|
inline BOOST_DEDUCED_TYPENAME range_iterator<const T>::type
|
|
const_begin( const T& r )
|
|
{
|
|
return boost::range_adl_barrier::begin( r );
|
|
}
|
|
} // namespace range_adl_barrier
|
|
|
|
using namespace range_adl_barrier;
|
|
} // namespace boost
|
|
|
|
#endif
|
|
|