// Boost.TypeErasure library
|
//
|
// Copyright 2011 Steven Watanabe
|
//
|
// 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)
|
//
|
// $Id$
|
|
#if !defined(BOOST_PP_IS_ITERATING)
|
|
#ifndef BOOST_TYPE_ERASURE_DETAIL_REBIND_PLACEHOLDERS_HPP_INCLUDED
|
#define BOOST_TYPE_ERASURE_DETAIL_REBIND_PLACEHOLDERS_HPP_INCLUDED
|
|
#include <boost/mpl/eval_if.hpp>
|
#include <boost/mpl/identity.hpp>
|
#include <boost/mpl/at.hpp>
|
#include <boost/mpl/has_key.hpp>
|
#include <boost/mpl/not.hpp>
|
#include <boost/mpl/or.hpp>
|
#include <boost/mpl/assert.hpp>
|
#include <boost/preprocessor/cat.hpp>
|
#include <boost/preprocessor/iteration/iterate.hpp>
|
#include <boost/preprocessor/repetition/enum.hpp>
|
#include <boost/preprocessor/repetition/enum_params.hpp>
|
#include <boost/preprocessor/repetition/enum_trailing_params.hpp>
|
#include <boost/type_erasure/config.hpp>
|
#include <boost/type_erasure/detail/meta.hpp>
|
#include <boost/type_erasure/is_placeholder.hpp>
|
|
namespace boost {
|
namespace type_erasure {
|
|
template<class F>
|
struct deduced;
|
|
namespace detail {
|
|
template<class T, class Bindings>
|
struct rebind_placeholders
|
{
|
typedef void type;
|
};
|
|
template<class T>
|
struct identity
|
{
|
typedef T type;
|
};
|
|
template<class PrimitiveConcept, class Sig>
|
struct vtable_adapter;
|
|
#ifdef BOOST_TYPE_ERASURE_USE_MP11
|
|
template<class T, class Bindings>
|
using rebind_placeholders_t = typename rebind_placeholders<T, Bindings>::type;
|
|
template<class T, class Bindings>
|
using rebind_one_placeholder = ::boost::mp11::mp_second< ::boost::mp11::mp_map_find<Bindings, T> >;
|
|
template<class T>
|
struct rebind_placeholders_in_argument_impl
|
{
|
template<class Bindings>
|
using apply = ::boost::type_erasure::detail::eval_if<
|
::boost::mp11::mp_map_contains<Bindings, T>::value,
|
::boost::type_erasure::detail::rebind_one_placeholder,
|
::boost::type_erasure::detail::first,
|
T,
|
Bindings
|
>;
|
};
|
|
template<class T, class Bindings>
|
using rebind_placeholders_in_argument_t = typename ::boost::type_erasure::detail::rebind_placeholders_in_argument_impl<T>::template apply<Bindings>;
|
|
template<class T, class Bindings>
|
using rebind_placeholders_in_argument = ::boost::mpl::identity< ::boost::type_erasure::detail::rebind_placeholders_in_argument_t<T, Bindings> >;
|
|
template<class T>
|
struct rebind_placeholders_in_argument_impl<T&>
|
{
|
template<class Bindings>
|
using apply = rebind_placeholders_in_argument_t<T, Bindings>&;
|
};
|
|
template<class T>
|
struct rebind_placeholders_in_argument_impl<T&&>
|
{
|
template<class Bindings>
|
using apply = rebind_placeholders_in_argument_t<T, Bindings>&&;
|
};
|
|
template<class T>
|
struct rebind_placeholders_in_argument_impl<const T>
|
{
|
template<class Bindings>
|
using apply = rebind_placeholders_in_argument_t<T, Bindings> const;
|
};
|
|
template<class F, class Bindings>
|
using rebind_placeholders_in_deduced =
|
typename ::boost::type_erasure::deduced<
|
::boost::type_erasure::detail::rebind_placeholders_t<F, Bindings>
|
>::type;
|
|
template<class F, class Bindings>
|
using rebind_deduced_placeholder =
|
::boost::mp11::mp_second<
|
::boost::mp11::mp_map_find<Bindings, ::boost::type_erasure::deduced<F> >
|
>;
|
|
template<class F>
|
struct rebind_placeholders_in_argument_impl<
|
::boost::type_erasure::deduced<F>
|
>
|
{
|
template<class Bindings>
|
using apply = ::boost::type_erasure::detail::eval_if<
|
::boost::mp11::mp_map_contains<Bindings, ::boost::type_erasure::deduced<F> >::value,
|
::boost::type_erasure::detail::rebind_deduced_placeholder,
|
::boost::type_erasure::detail::rebind_placeholders_in_deduced,
|
F,
|
Bindings
|
>;
|
};
|
|
template<class R, class... T>
|
struct rebind_placeholders_in_argument_impl<R(T...)>
|
{
|
template<class Bindings>
|
using apply =
|
rebind_placeholders_in_argument_t<R, Bindings>
|
(rebind_placeholders_in_argument_t<T, Bindings>...);
|
};
|
|
template<class R, class C, class... T>
|
struct rebind_placeholders_in_argument_impl<R (C::*)(T...)>
|
{
|
template<class Bindings>
|
using apply =
|
rebind_placeholders_in_argument_t<R, Bindings>
|
(rebind_placeholders_in_argument_t<C, Bindings>::*)
|
(rebind_placeholders_in_argument_t<T, Bindings>...);
|
};
|
|
template<class R, class C, class... T>
|
struct rebind_placeholders_in_argument_impl<R (C::*)(T...) const>
|
{
|
template<class Bindings>
|
using apply =
|
rebind_placeholders_in_argument_t<R, Bindings>
|
(rebind_placeholders_in_argument_t<C, Bindings>::*)
|
(rebind_placeholders_in_argument_t<T, Bindings>...) const;
|
};
|
|
template<template<class...> class T, class... U, class Bindings>
|
struct rebind_placeholders<T<U...>, Bindings>
|
{
|
typedef ::boost::type_erasure::detail::make_mp_list<Bindings> xBindings;
|
typedef T<rebind_placeholders_in_argument_t<U, xBindings>...> type;
|
};
|
|
template<class PrimitiveConcept, class Sig, class Bindings>
|
struct rebind_placeholders<vtable_adapter<PrimitiveConcept, Sig>, Bindings>
|
{
|
typedef ::boost::type_erasure::detail::make_mp_list<Bindings> xBindings;
|
typedef vtable_adapter<
|
rebind_placeholders_t<PrimitiveConcept, xBindings>,
|
rebind_placeholders_in_argument_t<Sig, xBindings>
|
> type;
|
};
|
|
#else
|
|
template<class T, class Bindings>
|
struct rebind_placeholders_in_argument
|
{
|
BOOST_MPL_ASSERT((boost::mpl::or_<
|
::boost::mpl::not_< ::boost::type_erasure::is_placeholder<T> >,
|
::boost::mpl::has_key<Bindings, T>
|
>));
|
typedef typename ::boost::mpl::eval_if<
|
::boost::type_erasure::is_placeholder<T>,
|
::boost::mpl::at<Bindings, T>,
|
::boost::type_erasure::detail::identity<T>
|
>::type type;
|
};
|
|
template<class PrimitiveConcept, class Sig, class Bindings>
|
struct rebind_placeholders<vtable_adapter<PrimitiveConcept, Sig>, Bindings>
|
{
|
typedef vtable_adapter<
|
typename rebind_placeholders<PrimitiveConcept, Bindings>::type,
|
typename rebind_placeholders_in_argument<Sig, Bindings>::type
|
> type;
|
};
|
|
template<class T, class Bindings>
|
struct rebind_placeholders_in_argument<T&, Bindings>
|
{
|
typedef typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
T,
|
Bindings
|
>::type& type;
|
};
|
|
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
|
|
template<class T, class Bindings>
|
struct rebind_placeholders_in_argument<T&&, Bindings>
|
{
|
typedef typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
T,
|
Bindings
|
>::type&& type;
|
};
|
|
#endif
|
|
template<class T, class Bindings>
|
struct rebind_placeholders_in_argument<const T, Bindings>
|
{
|
typedef const typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
T,
|
Bindings
|
>::type type;
|
};
|
|
template<class F, class Bindings>
|
struct rebind_placeholders_in_deduced
|
{
|
typedef typename ::boost::type_erasure::deduced<
|
typename ::boost::type_erasure::detail::rebind_placeholders<F, Bindings>::type
|
>::type type;
|
};
|
|
template<class F, class Bindings>
|
struct rebind_placeholders_in_argument<
|
::boost::type_erasure::deduced<F>,
|
Bindings
|
>
|
{
|
typedef typename ::boost::mpl::eval_if<
|
::boost::mpl::has_key<Bindings, ::boost::type_erasure::deduced<F> >,
|
::boost::mpl::at<Bindings, ::boost::type_erasure::deduced<F> >,
|
::boost::type_erasure::detail::rebind_placeholders_in_deduced<
|
F,
|
Bindings
|
>
|
>::type type;
|
};
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
|
|
template<template<class...> class T, class... U, class Bindings>
|
struct rebind_placeholders<T<U...>, Bindings>
|
{
|
typedef T<typename rebind_placeholders_in_argument<U, Bindings>::type...> type;
|
};
|
|
template<class R, class... T, class Bindings>
|
struct rebind_placeholders_in_argument<R(T...), Bindings>
|
{
|
typedef typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
R,
|
Bindings
|
>::type type(typename rebind_placeholders_in_argument<T, Bindings>::type...);
|
};
|
|
template<class R, class C, class... T, class Bindings>
|
struct rebind_placeholders_in_argument<R (C::*)(T...), Bindings>
|
{
|
typedef typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
R,
|
Bindings
|
>::type (rebind_placeholders_in_argument<C, Bindings>::type::*type)
|
(typename rebind_placeholders_in_argument<T, Bindings>::type...);
|
};
|
|
template<class R, class C, class... T, class Bindings>
|
struct rebind_placeholders_in_argument<R (C::*)(T...) const, Bindings>
|
{
|
typedef typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
R,
|
Bindings
|
>::type (rebind_placeholders_in_argument<C, Bindings>::type::*type)
|
(typename rebind_placeholders_in_argument<T, Bindings>::type...) const;
|
};
|
|
#else
|
|
#define BOOST_PP_FILENAME_1 <boost/type_erasure/detail/rebind_placeholders.hpp>
|
#define BOOST_PP_ITERATION_LIMITS (0, BOOST_TYPE_ERASURE_MAX_ARITY)
|
#include BOOST_PP_ITERATE()
|
|
#endif
|
|
#endif
|
|
}
|
}
|
}
|
|
#endif
|
|
#else
|
|
#define N BOOST_PP_ITERATION()
|
#define BOOST_TYPE_ERASURE_REBIND(z, n, data) \
|
typename rebind_placeholders_in_argument<BOOST_PP_CAT(data, n), Bindings>::type
|
|
#if N != 0
|
|
template<template<BOOST_PP_ENUM_PARAMS(N, class T)> class T,
|
BOOST_PP_ENUM_PARAMS(N, class T), class Bindings>
|
struct rebind_placeholders<T<BOOST_PP_ENUM_PARAMS(N, T)>, Bindings>
|
{
|
typedef T<BOOST_PP_ENUM(N, BOOST_TYPE_ERASURE_REBIND, T)> type;
|
};
|
|
#endif
|
|
template<class R
|
BOOST_PP_ENUM_TRAILING_PARAMS(N, class T), class Bindings>
|
struct rebind_placeholders_in_argument<R(BOOST_PP_ENUM_PARAMS(N, T)), Bindings>
|
{
|
typedef typename ::boost::type_erasure::detail::rebind_placeholders_in_argument<
|
R,
|
Bindings
|
>::type type(BOOST_PP_ENUM(N, BOOST_TYPE_ERASURE_REBIND, T));
|
};
|
|
#undef BOOST_TYPE_ERASURE_REBIND
|
#undef N
|
|
#endif
|
