blob: 1952550da01bc476460b20c9a1cdc1caa63cbf2e [file] [log] [blame]
// 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 NDNBOOST_RANGE_SIZE_HPP
#define NDNBOOST_RANGE_SIZE_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <ndnboost/range/config.hpp>
#include <ndnboost/range/begin.hpp>
#include <ndnboost/range/end.hpp>
#include <ndnboost/range/size_type.hpp>
#include <ndnboost/assert.hpp>
namespace ndnboost
{
namespace range_detail
{
template<class SinglePassRange>
inline NDNBOOST_DEDUCED_TYPENAME range_size<const SinglePassRange>::type
range_calculate_size(const SinglePassRange& rng)
{
NDNBOOST_ASSERT( (ndnboost::end(rng) - ndnboost::begin(rng)) >= 0 &&
"reachability invariant broken!" );
return ndnboost::end(rng) - ndnboost::begin(rng);
}
}
template<class SinglePassRange>
inline NDNBOOST_DEDUCED_TYPENAME range_size<const SinglePassRange>::type
size(const SinglePassRange& rng)
{
#if !NDNBOOST_WORKAROUND(__BORLANDC__, NDNBOOST_TESTED_AT(0x564)) && \
!NDNBOOST_WORKAROUND(__GNUC__, < 3) \
/**/
using namespace range_detail;
#endif
return range_calculate_size(rng);
}
} // namespace 'boost'
#endif