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/*=============================================================================
Copyright (c) 2001-2007 Joel de Guzman
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_PHOENIX_CORE_DETAIL_MEMBER_VARIABLE_HPP
#define BOOST_PHOENIX_CORE_DETAIL_MEMBER_VARIABLE_HPP
#include <boost/proto/detail/decltype.hpp>
#include <boost/type_traits/remove_pointer.hpp>
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4180) // qualifier applied to function type has no meaning; ignored
#endif
namespace boost { namespace phoenix { namespace detail {
template <typename RT, typename MP>
struct member_variable
{
template <typename Sig>
struct result;
template <typename This, typename Class>
struct result<This(Class)>
: result<This(Class const &)>
{};
template <typename This, typename Class>
struct result<This(Class &)>
{
typedef typename boost::mpl::if_c<
boost::is_const<
typename boost::remove_pointer<
typename boost::remove_reference<Class>::type
>::type
>::value
, const RT&
, RT&
>::type
type;
};
member_variable(MP mp)
: mp(mp) {}
template <typename Class>
RT& operator()(Class& obj) const
{
BOOST_PROTO_USE_GET_POINTER();
typedef typename proto::detail::class_member_traits<MP>::class_type class_type;
return (BOOST_PROTO_GET_POINTER(class_type, obj)->*mp);
}
template <typename Class>
RT const& operator()(Class const& obj) const
{
BOOST_PROTO_USE_GET_POINTER();
typedef typename proto::detail::class_member_traits<MP>::class_type class_type;
return (BOOST_PROTO_GET_POINTER(class_type, obj)->*mp);
}
template <typename Class>
RT& operator()(Class* obj) const
{
return obj->*mp;
}
template <typename Class>
RT const& operator()(Class const* obj) const
{
return obj->*mp;
}
MP mp;
};
}}}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif
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