// 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_SIZE_HPP | |
#define BOOST_RANGE_SIZE_HPP | |
#if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
# pragma once | |
#endif | |
#include <boost/range/config.hpp> | |
#include <boost/range/begin.hpp> | |
#include <boost/range/end.hpp> | |
#include <boost/range/difference_type.hpp> | |
#include <boost/assert.hpp> | |
namespace boost | |
{ | |
namespace range_detail | |
{ | |
template<class SinglePassRange> | |
inline BOOST_DEDUCED_TYPENAME range_difference<SinglePassRange>::type | |
range_calculate_size(const SinglePassRange& rng) | |
{ | |
BOOST_ASSERT( (boost::end(rng) - boost::begin(rng)) >= 0 && | |
"reachability invariant broken!" ); | |
return boost::end(rng) - boost::begin(rng); | |
} | |
} | |
template<class SinglePassRange> | |
inline BOOST_DEDUCED_TYPENAME range_difference<SinglePassRange>::type | |
size(const SinglePassRange& rng) | |
{ | |
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ | |
!BOOST_WORKAROUND(__GNUC__, < 3) \ | |
/**/ | |
using namespace range_detail; | |
#endif | |
return range_calculate_size(rng); | |
} | |
} // namespace 'boost' | |
#endif |