// 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) # pragma once #endif #include <boost/range/config.hpp> #include <boost/range/begin.hpp> #include <boost/range/end.hpp> #include <boost/range/size_type.hpp> #include <boost/range/detail/has_member_size.hpp> #include <boost/assert.hpp> #include <boost/cstdint.hpp> #include <boost/utility.hpp> namespace boost { namespace range_detail { template<class SinglePassRange> inline typename ::boost::enable_if< has_member_size<SinglePassRange>, typename range_size<const SinglePassRange>::type >::type range_calculate_size(const SinglePassRange& rng) { return rng.size(); } template<class SinglePassRange> inline typename disable_if< has_member_size<SinglePassRange>, typename range_size<const SinglePassRange>::type >::type range_calculate_size(const SinglePassRange& rng) { return std::distance(boost::begin(rng), boost::end(rng)); } } template<class SinglePassRange> inline typename range_size<const 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