123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128 |
- /*==============================================================================
- Copyright (c) 2005-2010 Joel de Guzman
- Copyright (c) 2011 Thomas Heller
- 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_CALL_HPP
- #define BOOST_PHOENIX_CORE_CALL_HPP
- #include <boost/phoenix/core/limits.hpp>
- #include <boost/phoenix/core/environment.hpp>
- #include <boost/proto/proto_fwd.hpp>
- #include <boost/proto/traits.hpp>
- #include <boost/proto/transform/impl.hpp>
- #ifndef BOOST_PHOENIX_NO_VARIADIC_CALL
- # include <boost/phoenix/core/detail/index_sequence.hpp>
- #endif
- namespace boost { namespace phoenix
- {
- namespace detail
- {
- template <
- typename Fun
- , typename Expr
- , typename State
- , typename Data
- , long Arity = proto::arity_of<Expr>::value
- >
- struct call_impl;
- template <typename Fun, typename Expr, typename State, typename Data>
- struct call_impl<Fun, Expr, State, Data, 0>
- : proto::transform_impl<Expr, State, Data>
- {
- typedef
- typename boost::phoenix::result_of::context<State, Data>::type
- context_type;
- typedef
- typename boost::result_of<
- Fun(Expr, context_type)
- >::type
- result_type;
- result_type operator()(
- typename call_impl::expr_param e
- , typename call_impl::state_param s
- , typename call_impl::data_param d
- ) const
- {
- return Fun()(e, boost::phoenix::context(s, d));
- }
- };
- #ifdef BOOST_PHOENIX_NO_VARIADIC_CALL
- #include <boost/phoenix/core/detail/cpp03/call.hpp>
- #else
- template <typename Fun, typename Expr, typename State, typename Data
- , typename Indices>
- struct call_impl_;
- template <typename Fun, typename Expr, typename State, typename Data
- , std::size_t... Indices>
- struct call_impl_<Fun, Expr, State, Data, index_sequence<Indices...> >
- : proto::transform_impl<Expr, State, Data>
- {
- typedef
- typename boost::phoenix::result_of::context<State, Data>::type
- context_type;
- template <std::size_t Index>
- struct result_of_expr
- {
- typedef
- typename proto::result_of::child_c<Expr, Index>::type
- type;
- };
- typedef
- typename boost::result_of<
- Fun(
- typename result_of_expr<Indices>::type...
- , context_type
- )
- >::type
- result_type;
- result_type operator()(
- typename call_impl_::expr_param e
- , typename call_impl_::state_param s
- , typename call_impl_::data_param d
- ) const
- {
- return
- Fun()(
- proto::child_c<Indices>(e)...
- , boost::phoenix::context(s, d)
- );
- }
- };
- template <typename Fun, typename Expr, typename State, typename Data, long Arity>
- struct call_impl
- : call_impl_<Fun, Expr, State, Data, typename make_index_sequence<Arity>::type>
- {
- };
- #endif
- }
- template <typename Fun, typename Dummy = void>
- struct call
- : proto::transform<call<Fun> >
- {
- template <typename Expr, typename State, typename Data>
- struct impl
- : detail::call_impl<Fun, Expr, State, Data>
- {};
- };
- }
- namespace proto
- {
- template <typename Fun, typename Dummy>
- struct is_callable<phoenix::call<Fun, Dummy> > : mpl::true_ {};
- }
- }
- #endif
|