353 lines
22 KiB
Plaintext
353 lines
22 KiB
Plaintext
///////////////////////////////////////////////////////////////////////////////
|
|
/// \file impl.hpp
|
|
/// Contains definition of transform<> and transform_impl<> helpers.
|
|
//
|
|
// Copyright 2008 Eric Niebler. 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_PROTO_TRANSFORM_IMPL_HPP_EAN_04_03_2008
|
|
#define BOOST_PROTO_TRANSFORM_IMPL_HPP_EAN_04_03_2008
|
|
|
|
#include <boost/config.hpp>
|
|
#include <boost/mpl/bool.hpp>
|
|
#include <boost/type_traits/add_const.hpp>
|
|
#include <boost/type_traits/add_reference.hpp>
|
|
#include <boost/proto/proto_fwd.hpp>
|
|
#include <boost/proto/detail/any.hpp>
|
|
#include <boost/proto/detail/static_const.hpp>
|
|
|
|
#if defined(_MSC_VER)
|
|
# pragma warning(push)
|
|
# pragma warning(disable : 4714) // function 'xxx' marked as __forceinline not inlined
|
|
#endif
|
|
|
|
namespace boost { namespace proto
|
|
{
|
|
namespace envns_
|
|
{
|
|
////////////////////////////////////////////////////////////////////////////////////////////
|
|
struct key_not_found
|
|
{};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////
|
|
// empty_env
|
|
struct empty_env
|
|
{
|
|
typedef void proto_environment_;
|
|
|
|
template<typename OtherTag, typename OtherValue = key_not_found>
|
|
struct lookup
|
|
{
|
|
typedef OtherValue type;
|
|
typedef
|
|
typename add_reference<typename add_const<OtherValue>::type>::type
|
|
const_reference;
|
|
};
|
|
|
|
key_not_found operator[](detail::any) const
|
|
{
|
|
return key_not_found();
|
|
}
|
|
|
|
template<typename T>
|
|
T const &at(detail::any, T const &t) const
|
|
{
|
|
return t;
|
|
}
|
|
};
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////
|
|
// is_env
|
|
template<typename T, typename Void>
|
|
struct is_env
|
|
: mpl::false_
|
|
{};
|
|
|
|
template<typename T>
|
|
struct is_env<T, typename T::proto_environment_>
|
|
: mpl::true_
|
|
{};
|
|
|
|
template<typename T>
|
|
struct is_env<T &, void>
|
|
: is_env<T>
|
|
{};
|
|
|
|
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
|
|
|
|
/// INTERNAL ONLY
|
|
///
|
|
#define BOOST_PROTO_TRANSFORM_(PrimitiveTransform, X) \
|
|
BOOST_PROTO_CALLABLE() \
|
|
typedef X proto_is_transform_; \
|
|
typedef PrimitiveTransform transform_type; \
|
|
\
|
|
template<typename Sig> \
|
|
struct result \
|
|
{ \
|
|
typedef typename boost::proto::detail::apply_transform<Sig>::result_type type; \
|
|
}; \
|
|
\
|
|
template<typename Expr> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr &)>::result_type \
|
|
operator ()(Expr &e) const \
|
|
{ \
|
|
boost::proto::empty_state s = 0; \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &)>::result_type \
|
|
operator ()(Expr const &e) const \
|
|
{ \
|
|
boost::proto::empty_state s = 0; \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr &, State &)>::result_type \
|
|
operator ()(Expr &e, State &s) const \
|
|
{ \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr &, State &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &, State &)>::result_type \
|
|
operator ()(Expr const &e, State &s) const \
|
|
{ \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &, State &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr &, State const &)>::result_type \
|
|
operator ()(Expr &e, State const &s) const \
|
|
{ \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr &, State const &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>::result_type \
|
|
operator ()(Expr const &e, State const &s) const \
|
|
{ \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State, typename Data> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr &, State &, Data &)>::result_type \
|
|
operator ()(Expr &e, State &s, Data &d) const \
|
|
{ \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr &, State &, Data &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State, typename Data> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &, State &, Data &)>::result_type \
|
|
operator ()(Expr const &e, State &s, Data &d) const \
|
|
{ \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &, State &, Data &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State, typename Data> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr &, State const &, Data &)>::result_type \
|
|
operator ()(Expr &e, State const &s, Data &d) const \
|
|
{ \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr &, State const &, Data &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State, typename Data> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &, State const &, Data &)>::result_type \
|
|
operator ()(Expr const &e, State const &s, Data &d) const \
|
|
{ \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &, State const &, Data &)>()(e, s, d); \
|
|
} \
|
|
/**/
|
|
|
|
#else
|
|
|
|
/// INTERNAL ONLY
|
|
///
|
|
#define BOOST_PROTO_TRANSFORM_(PrimitiveTransform, X) \
|
|
BOOST_PROTO_CALLABLE() \
|
|
typedef X proto_is_transform_; \
|
|
typedef PrimitiveTransform transform_type; \
|
|
\
|
|
template<typename Sig> \
|
|
struct result \
|
|
{ \
|
|
typedef typename boost::proto::detail::apply_transform<Sig>::result_type type; \
|
|
}; \
|
|
\
|
|
template<typename Expr> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &)>::result_type \
|
|
operator ()(Expr &&e) const \
|
|
{ \
|
|
boost::proto::empty_state s = 0; \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>::result_type \
|
|
operator ()(Expr &&e, State &&s) const \
|
|
{ \
|
|
boost::proto::empty_env d; \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>()(e, s, d); \
|
|
} \
|
|
\
|
|
template<typename Expr, typename State, typename Data> \
|
|
BOOST_FORCEINLINE \
|
|
typename boost::proto::detail::apply_transform<transform_type(Expr const &, State const &, Data const &)>::result_type \
|
|
operator ()(Expr &&e, State &&s, Data &&d) const \
|
|
{ \
|
|
return boost::proto::detail::apply_transform<transform_type(Expr const &, State const &, Data const &)>()(e, s, d); \
|
|
} \
|
|
/**/
|
|
|
|
#endif
|
|
|
|
#define BOOST_PROTO_TRANSFORM(PrimitiveTransform) \
|
|
BOOST_PROTO_TRANSFORM_(PrimitiveTransform, void) \
|
|
/**/
|
|
|
|
namespace detail
|
|
{
|
|
template<typename Sig>
|
|
struct apply_transform;
|
|
|
|
template<typename PrimitiveTransform, typename Expr>
|
|
struct apply_transform<PrimitiveTransform(Expr)>
|
|
: PrimitiveTransform::template impl<Expr, empty_state, empty_env>
|
|
{};
|
|
|
|
template<typename PrimitiveTransform, typename Expr, typename State>
|
|
struct apply_transform<PrimitiveTransform(Expr, State)>
|
|
: PrimitiveTransform::template impl<Expr, State, empty_env>
|
|
{};
|
|
|
|
template<typename PrimitiveTransform, typename Expr, typename State, typename Data>
|
|
struct apply_transform<PrimitiveTransform(Expr, State, Data)>
|
|
: PrimitiveTransform::template impl<Expr, State, Data>
|
|
{};
|
|
}
|
|
|
|
template<typename PrimitiveTransform, typename X>
|
|
struct transform
|
|
{
|
|
BOOST_PROTO_TRANSFORM_(PrimitiveTransform, X)
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl
|
|
{
|
|
typedef Expr const expr;
|
|
typedef Expr const &expr_param;
|
|
typedef State const state;
|
|
typedef State const &state_param;
|
|
typedef Data const data;
|
|
typedef Data const &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr &, State, Data>
|
|
{
|
|
typedef Expr expr;
|
|
typedef Expr &expr_param;
|
|
typedef State const state;
|
|
typedef State const &state_param;
|
|
typedef Data const data;
|
|
typedef Data const &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr, State &, Data>
|
|
{
|
|
typedef Expr const expr;
|
|
typedef Expr const &expr_param;
|
|
typedef State state;
|
|
typedef State &state_param;
|
|
typedef Data const data;
|
|
typedef Data const &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr, State, Data &>
|
|
{
|
|
typedef Expr const expr;
|
|
typedef Expr const &expr_param;
|
|
typedef State const state;
|
|
typedef State const &state_param;
|
|
typedef Data data;
|
|
typedef Data &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr &, State &, Data>
|
|
{
|
|
typedef Expr expr;
|
|
typedef Expr &expr_param;
|
|
typedef State state;
|
|
typedef State &state_param;
|
|
typedef Data const data;
|
|
typedef Data const &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr &, State, Data &>
|
|
{
|
|
typedef Expr expr;
|
|
typedef Expr &expr_param;
|
|
typedef State const state;
|
|
typedef State const &state_param;
|
|
typedef Data data;
|
|
typedef Data &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr, State &, Data &>
|
|
{
|
|
typedef Expr const expr;
|
|
typedef Expr const &expr_param;
|
|
typedef State state;
|
|
typedef State &state_param;
|
|
typedef Data data;
|
|
typedef Data &data_param;
|
|
};
|
|
|
|
template<typename Expr, typename State, typename Data>
|
|
struct transform_impl<Expr &, State &, Data &>
|
|
{
|
|
typedef Expr expr;
|
|
typedef Expr &expr_param;
|
|
typedef State state;
|
|
typedef State &state_param;
|
|
typedef Data data;
|
|
typedef Data &data_param;
|
|
};
|
|
|
|
}} // namespace boost::proto
|
|
|
|
#if defined(_MSC_VER)
|
|
# pragma warning(pop)
|
|
#endif
|
|
|
|
#endif
|