76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/*==============================================================================
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Copyright (c) 2005-2010 Joel de Guzman
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Copyright (c) 2011 Thomas Heller
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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_CALL_HPP
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#define BOOST_PHOENIX_CORE_CALL_HPP
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#include <boost/phoenix/core/limits.hpp>
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#include <boost/phoenix/core/environment.hpp>
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#include <boost/proto/proto_fwd.hpp>
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#include <boost/proto/traits.hpp>
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#include <boost/proto/transform/impl.hpp>
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namespace boost { namespace phoenix
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{
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namespace detail
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{
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template <
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typename Fun
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, typename Expr
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, typename State
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, typename Data
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, long Arity = proto::arity_of<Expr>::value
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>
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struct call_impl;
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template <typename Fun, typename Expr, typename State, typename Data>
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struct call_impl<Fun, Expr, State, Data, 0>
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: proto::transform_impl<Expr, State, Data>
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{
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typedef
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typename boost::phoenix::result_of::context<State, Data>::type
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context_type;
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typedef
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typename boost::result_of<
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Fun(Expr, context_type)
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>::type
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result_type;
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result_type operator()(
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typename call_impl::expr_param e
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, typename call_impl::state_param s
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, typename call_impl::data_param d
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) const
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{
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return Fun()(e, boost::phoenix::context(s, d));
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}
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};
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}
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template <typename Fun, typename Dummy = void>
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struct call
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: proto::transform<call<Fun> >
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{
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template <typename Expr, typename State, typename Data>
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struct impl
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: detail::call_impl<Fun, Expr, State, Data>
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{};
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};
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#include <boost/phoenix/core/detail/call.hpp>
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}
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namespace proto
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{
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template <typename Fun, typename Dummy>
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struct is_callable<phoenix::call<Fun, Dummy> > : mpl::true_ {};
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}
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}
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#endif
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