/*=============================================================================
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Copyright (c) 2001-2007 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef BOOST_PHOENIX_CORE_DETAIL_MEMBER_VARIABLE_HPP
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#define BOOST_PHOENIX_CORE_DETAIL_MEMBER_VARIABLE_HPP
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#include <boost/proto/detail/decltype.hpp>
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#include <boost/type_traits/remove_pointer.hpp>
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable: 4180) // qualifier applied to function type has no meaning; ignored
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#endif
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namespace boost { namespace phoenix { namespace detail {
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template <typename RT, typename MP>
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struct member_variable
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{
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template <typename Sig>
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struct result;
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template <typename This, typename Class>
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struct result<This(Class)>
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: result<This(Class const &)>
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{};
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template <typename This, typename Class>
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struct result<This(Class &)>
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{
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typedef typename boost::mpl::if_c<
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boost::is_const<
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typename boost::remove_pointer<
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typename boost::remove_reference<Class>::type
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>::type
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>::value
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, const RT&
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, RT&
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>::type
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type;
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};
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member_variable(MP mp_)
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: mp(mp_) {}
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template <typename Class>
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RT& operator()(Class& obj) const
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{
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BOOST_PROTO_USE_GET_POINTER();
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typedef typename proto::detail::class_member_traits<MP>::class_type class_type;
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return (BOOST_PROTO_GET_POINTER(class_type, obj)->*mp);
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}
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template <typename Class>
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RT& operator()(Class* obj) const
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{
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return obj->*mp;
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}
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template <typename Class>
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RT const& operator()(Class const& obj) const
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{
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BOOST_PROTO_USE_GET_POINTER();
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typedef typename proto::detail::class_member_traits<MP>::class_type class_type;
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return (BOOST_PROTO_GET_POINTER(class_type, obj)->*mp);
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}
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template <typename Class>
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RT const& operator()(Class const* obj) const
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{
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return obj->*mp;
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}
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MP mp;
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};
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}}}
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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#endif
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