/////////////////////////////////////////////////////////////////////////////// | |
// type_traits.hpp | |
// | |
// Copyright 2008 Eric Niebler. Distributed under 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) | |
#ifndef BOOST_XPRESSIVE_DETAIL_STATIC_TYPE_TRAITS_HPP_EAN_10_04_2005 | |
#define BOOST_XPRESSIVE_DETAIL_STATIC_TYPE_TRAITS_HPP_EAN_10_04_2005 | |
// MS compatible compilers support #pragma once | |
#if defined(_MSC_VER) && (_MSC_VER >= 1020) | |
# pragma once | |
#endif | |
#include <boost/mpl/bool.hpp> | |
#include <boost/iterator/iterator_traits.hpp> | |
#include <boost/type_traits/is_convertible.hpp> | |
#include <boost/xpressive/detail/detail_fwd.hpp> | |
namespace boost { namespace xpressive { namespace detail | |
{ | |
/////////////////////////////////////////////////////////////////////////////// | |
// is_static_xpression | |
// | |
template<typename T> | |
struct is_static_xpression | |
: mpl::false_ | |
{ | |
}; | |
template<typename Matcher, typename Next> | |
struct is_static_xpression<static_xpression<Matcher, Next> > | |
: mpl::true_ | |
{ | |
}; | |
template<typename Top, typename Next> | |
struct is_static_xpression<stacked_xpression<Top, Next> > | |
: mpl::true_ | |
{ | |
}; | |
////////////////////////////////////////////////////////////////////////// | |
// is_random | |
// | |
template<typename BidiIter> | |
struct is_random | |
: is_convertible | |
< | |
typename iterator_category<BidiIter>::type | |
, std::random_access_iterator_tag | |
> | |
{ | |
}; | |
}}} // namespace boost::xpressive::detail | |
#endif |