Chris@16: /*==============================================================================
Chris@16:     Copyright (c) 2005-2010 Joel de Guzman
Chris@16:     Copyright (c) 2011 Thomas Heller
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #ifndef BOOST_PHOENIX_CORE_CALL_HPP
Chris@16: #define BOOST_PHOENIX_CORE_CALL_HPP
Chris@16: 
Chris@16: #include <boost/phoenix/core/limits.hpp>
Chris@16: #include <boost/phoenix/core/environment.hpp>
Chris@16: #include <boost/proto/proto_fwd.hpp>
Chris@16: #include <boost/proto/traits.hpp>
Chris@16: #include <boost/proto/transform/impl.hpp>
Chris@16: 
Chris@16: namespace boost { namespace phoenix
Chris@16: {
Chris@16:     namespace detail
Chris@16:     {
Chris@16:         template <
Chris@16:             typename Fun
Chris@16:           , typename Expr
Chris@16:           , typename State
Chris@16:           , typename Data
Chris@16:           , long Arity = proto::arity_of<Expr>::value
Chris@16:         >
Chris@16:         struct call_impl;
Chris@16:         
Chris@16:         template <typename Fun, typename Expr, typename State, typename Data>
Chris@16:         struct call_impl<Fun, Expr, State, Data, 0>
Chris@16:             : proto::transform_impl<Expr, State, Data>
Chris@16:         {
Chris@16:             typedef
Chris@16:                 typename boost::phoenix::result_of::context<State, Data>::type
Chris@16:                 context_type;
Chris@16:             
Chris@16:             typedef
Chris@16:                 typename boost::result_of<
Chris@16:                     Fun(Expr, context_type)
Chris@16:                 >::type
Chris@16:                 result_type;
Chris@16:             
Chris@16:             result_type operator()(
Chris@16:                 typename call_impl::expr_param e
Chris@16:               , typename call_impl::state_param s
Chris@16:               , typename call_impl::data_param d
Chris@16:             ) const
Chris@16:             {
Chris@16:                 return Fun()(e, boost::phoenix::context(s, d));
Chris@16:             }
Chris@16:         };
Chris@16:     }
Chris@16: 
Chris@16:     template <typename Fun, typename Dummy = void>
Chris@16:     struct call
Chris@16:         : proto::transform<call<Fun> >
Chris@16:     {
Chris@16:         template <typename Expr, typename State, typename Data>
Chris@16:         struct impl
Chris@16:             : detail::call_impl<Fun, Expr, State, Data>
Chris@16:         {};
Chris@16:     };
Chris@16: 
Chris@16:     #include <boost/phoenix/core/detail/call.hpp>
Chris@16: 
Chris@16: }
Chris@16:     namespace proto
Chris@16:     {
Chris@16:         template <typename Fun, typename Dummy>
Chris@16:         struct is_callable<phoenix::call<Fun, Dummy> > : mpl::true_ {};
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16: #endif