FM / type_erasure

/usr/include/boost/type_erasure

Name	Size	Mode	Actions
detail/	-	0755	rm
any.hpp	104285	0644	edit dl rm
any_cast.hpp	5492	0644	edit dl rm
binding.hpp	9045	0644	edit dl rm
binding_of.hpp	763	0644	edit dl rm
builtin.hpp	4318	0644	edit dl rm
call.hpp	21940	0644	edit dl rm
callable.hpp	13126	0644	edit dl rm
check_match.hpp	8181	0644	edit dl rm
concept_interface.hpp	1876	0644	edit dl rm
concept_of.hpp	1456	0644	edit dl rm
config.hpp	862	0644	edit dl rm
constructible.hpp	5344	0644	edit dl rm
deduced.hpp	1575	0644	edit dl rm
derived.hpp	927	0644	edit dl rm
dynamic_any_cast.hpp	8239	0644	edit dl rm
dynamic_binding.hpp	1099	0644	edit dl rm
exception.hpp	848	0644	edit dl rm
free.hpp	22187	0644	edit dl rm
is_empty.hpp	605	0644	edit dl rm
is_placeholder.hpp	830	0644	edit dl rm
is_subconcept.hpp	5377	0644	edit dl rm
iterator.hpp	9799	0644	edit dl rm
member.hpp	16813	0644	edit dl rm
operators.hpp	23235	0644	edit dl rm
param.hpp	9026	0644	edit dl rm
placeholder.hpp	2107	0644	edit dl rm
placeholder_of.hpp	1480	0644	edit dl rm
rebind_any.hpp	2018	0644	edit dl rm
register_binding.hpp	6431	0644	edit dl rm
relaxed.hpp	2646	0644	edit dl rm
require_match.hpp	7418	0644	edit dl rm
same_type.hpp	942	0644	edit dl rm
static_binding.hpp	831	0644	edit dl rm
tuple.hpp	17723	0644	edit dl rm
typeid_of.hpp	1866	0644	edit dl rm

Edit: /usr/include/boost/type_erasure/free.hpp (22187B)

// Boost.TypeErasure library
//
// Copyright 2012 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)
//
// $Id$

#ifndef BOOST_TYPE_ERASURE_FREE_HPP_INCLUDED
#define BOOST_TYPE_ERASURE_FREE_HPP_INCLUDED

#include <boost/detail/workaround.hpp>
#include <boost/preprocessor/repetition/enum.hpp>
#include <boost/preprocessor/repetition/enum_trailing.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/enum_shifted_params.hpp>
#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
#include <boost/preprocessor/repetition/enum_binary_params.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/control/if.hpp>
#include <boost/preprocessor/punctuation/is_begin_parens.hpp>
#include <boost/vmd/is_empty.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/type_traits/remove_cv.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/next.hpp>
#include <boost/type_erasure/detail/macro.hpp>
#include <boost/type_erasure/detail/const.hpp>
#include <boost/type_erasure/config.hpp>
#include <boost/type_erasure/derived.hpp>
#include <boost/type_erasure/rebind_any.hpp>
#include <boost/type_erasure/param.hpp>
#include <boost/type_erasure/is_placeholder.hpp>
#include <boost/type_erasure/call.hpp>
#include <boost/type_erasure/concept_interface.hpp>

#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || \
    defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
    defined(BOOST_TYPE_ERASURE_DOXYGEN) || \
    BOOST_WORKAROUND(BOOST_MSVC, == 1800)

namespace boost {
namespace type_erasure {
namespace detail {

template<BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_TYPE_ERASURE_MAX_ARITY, class T, void)>
struct first_placeholder {
    typedef typename ::boost::mpl::eval_if<is_placeholder<T0>,
        ::boost::mpl::identity<T0>,
        first_placeholder<BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_TYPE_ERASURE_MAX_ARITY, T)>
    >::type type;
};

template<>
struct first_placeholder<> {};

template<BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_TYPE_ERASURE_MAX_ARITY, class T, void)>
struct first_placeholder_index :
    ::boost::mpl::eval_if<is_placeholder<T0>,
        ::boost::mpl::int_<0>,
        ::boost::mpl::next<first_placeholder_index<BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_TYPE_ERASURE_MAX_ARITY, T)> >
    >::type
{};

}
}
}

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_QUALIFIED_ID(seq, N) \
    BOOST_TYPE_ERASURE_QUALIFIED_NAME(seq)<R(BOOST_PP_ENUM_PARAMS(N, T))>

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_UNQUALIFIED_PARAM_TYPE(z, n, data) \
    typename ::boost::remove_cv<typename ::boost::remove_reference<BOOST_PP_CAT(T, n)>::type>::type

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_PARAM_TYPE(z, n, data)                      \
    typename ::boost::mpl::eval_if_c<(_boost_type_erasure_free_p_idx::value == n), \
        ::boost::type_erasure::detail::maybe_const_this_param<BOOST_PP_CAT(T, n), Base>,    \
        ::boost::type_erasure::as_param<Base, BOOST_PP_CAT(T, n)>           \
    >::type BOOST_PP_CAT(t, n)

#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_FORWARD_I(z, n, data) ::std::forward<BOOST_PP_CAT(T, n)>(BOOST_PP_CAT(t, n))
/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_FORWARD(n) BOOST_PP_ENUM(n, BOOST_TYPE_ERASURE_FREE_FORWARD_I, ~)
/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_FORWARD_PARAM_I(z, n, data) \
    ::std::forward<typename ::boost::mpl::eval_if_c<(_boost_type_erasure_free_p_idx::value == n), \
        ::boost::type_erasure::detail::maybe_const_this_param<BOOST_PP_CAT(T, n), Base>,    \
        ::boost::type_erasure::as_param<Base, BOOST_PP_CAT(T, n)>           \
    >::type>(BOOST_PP_CAT(t, n))

#else

#define BOOST_TYPE_ERASURE_FREE_FORWARD(n) BOOST_PP_ENUM_PARAMS(n, t)
#define BOOST_TYPE_ERASURE_FREE_FORWARD_PARAM_I(z, n, data) BOOST_PP_CAT(t, n)

#endif

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_II(qual_name, concept_name, function_name, N)  \
    BOOST_TYPE_ERASURE_OPEN_NAMESPACE(qual_name)                        \
                                                                        \
    template<class Sig>                                                 \
    struct concept_name;                                                \
                                                                        \
    template<class R BOOST_PP_ENUM_TRAILING_PARAMS(N, class T)>         \
    struct concept_name<R(BOOST_PP_ENUM_PARAMS(N, T))> {                \
        static R apply(BOOST_PP_ENUM_BINARY_PARAMS(N, T, t))            \
        { return function_name(BOOST_TYPE_ERASURE_FREE_FORWARD(N)); }   \
    };                                                                  \
                                                                        \
    template<BOOST_PP_ENUM_PARAMS(N, class T)>                          \
    struct concept_name<void(BOOST_PP_ENUM_PARAMS(N, T))> {             \
        static void apply(BOOST_PP_ENUM_BINARY_PARAMS(N, T, t))         \
        { function_name(BOOST_TYPE_ERASURE_FREE_FORWARD(N)); }          \
    };                                                                  \
                                                                        \
    BOOST_TYPE_ERASURE_CLOSE_NAMESPACE(qual_name)                       \
                                                                        \
    namespace boost {                                                   \
    namespace type_erasure {                                            \
                                                                        \
    template<class R BOOST_PP_ENUM_TRAILING_PARAMS(N, class T), class Base> \
    struct concept_interface<                                           \
        BOOST_TYPE_ERASURE_FREE_QUALIFIED_ID(qual_name, N),             \
        Base,                                                           \
        typename ::boost::type_erasure::detail::first_placeholder<      \
            BOOST_PP_ENUM(N, BOOST_TYPE_ERASURE_FREE_UNQUALIFIED_PARAM_TYPE, ~)>::type  \
    > : Base {                                                          \
        typedef typename ::boost::type_erasure::detail::first_placeholder_index<    \
            BOOST_PP_ENUM(N, BOOST_TYPE_ERASURE_FREE_UNQUALIFIED_PARAM_TYPE, ~)>::type  \
            _boost_type_erasure_free_p_idx;                             \
        friend typename ::boost::type_erasure::rebind_any<Base, R>::type function_name(  \
            BOOST_PP_ENUM(N, BOOST_TYPE_ERASURE_FREE_PARAM_TYPE, ~))    \
        {                                                               \
            return ::boost::type_erasure::call(                         \
                BOOST_TYPE_ERASURE_FREE_QUALIFIED_ID(qual_name, N)()    \
                BOOST_PP_ENUM_TRAILING(N, BOOST_TYPE_ERASURE_FREE_FORWARD_PARAM_I, ~)); \
        }                                                               \
    };                                                                  \
                                                                        \
    }                                                                   \
    }

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_I(namespace_name, concept_name, function_name, N)\
    BOOST_TYPE_ERASURE_FREE_II(namespace_name, concept_name, function_name, N)

#ifdef BOOST_TYPE_ERASURE_DOXYGEN

/**
 * \brief Defines a primitive concept for a free function.
 *
 * \param concept_name is the name of the concept to declare.
 *        If it is omitted it defaults to <code>has_ ## function_name</code>
 * \param function_name is the name of the function.
 *
 * The declaration of the concept is
 * \code
 * template<class Sig>
 * struct concept_name;
 * \endcode
 * where Sig is a function type giving the
 * signature of the function.
 *
 * This macro can only be used at namespace scope.
 *
 * Example:
 *
 * \code
 * BOOST_TYPE_ERASURE_FREE(to_string)
 * typedef has_to_string<std::string(_self const&)> to_string_concept;
 * \endcode
 *
 * In C++03, the macro can only be used in the global namespace and
 * is defined as:
 *
 * \code
 * #define BOOST_TYPE_ERASURE_FREE(qualified_name, function_name, N)
 * \endcode
 *
 * Example:
 *
 * \code
 * BOOST_TYPE_ERASURE_FREE((boost)(has_to_string), to_string, 1)
 * \endcode
 *
 * For backwards compatibility, this form is always accepted.
 */
#define BOOST_TYPE_ERASURE_FREE(concept_name, function_name)

#else

#define BOOST_TYPE_ERASURE_FREE(qualified_name, function_name, N)                           \
    BOOST_TYPE_ERASURE_FREE_I(                                                              \
        qualified_name,                                                                     \
        BOOST_PP_SEQ_ELEM(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(qualified_name)), qualified_name), \
        function_name,                                                                      \
        N)

#endif

#else

namespace boost {
namespace type_erasure {
    
template<int... N>
struct index_list {};

namespace detail {
    
template<class... T>
struct first_placeholder;

template<class T0, class... T>
struct first_placeholder<T0, T...> {
    typedef typename ::boost::mpl::eval_if<is_placeholder<T0>,
        ::boost::mpl::identity<T0>,
        first_placeholder<T...>
    >::type type;
};

template<>
struct first_placeholder<> {};

template<class... T>
struct first_placeholder_index;

template<class T0, class... T>
struct first_placeholder_index<T0, T...> :
    ::boost::mpl::eval_if<is_placeholder<T0>,
        ::boost::mpl::int_<0>,
        ::boost::mpl::next<first_placeholder_index<T...> >
    >::type
{};

template<class Sig>
struct transform_free_signature;

template<class T, int N>
struct push_back_index;

template<int... N, int X>
struct push_back_index<index_list<N...>, X>
{
    typedef index_list<N..., X> type;
};

template<int N>
struct make_index_list {
    typedef typename push_back_index<
        typename make_index_list<N-1>::type,
        N-1
    >::type type;
};

template<>
struct make_index_list<0> {
    typedef index_list<> type;
};

#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) && \
    !defined(BOOST_NO_CXX11_DECLTYPE)

template<int N>
using make_index_list_t = typename ::boost::type_erasure::detail::make_index_list<N>::type;

#if BOOST_WORKAROUND(BOOST_MSVC, == 1900)

template<class... T>
struct first_placeholder_index_ :
    ::boost::type_erasure::detail::first_placeholder_index<
        ::boost::remove_cv_t< ::boost::remove_reference_t<T> >...
    >
{};
template<class... T>
using first_placeholder_index_t =
    typename ::boost::type_erasure::detail::first_placeholder_index_<T...>::type;

#else

template<class... T>
using first_placeholder_index_t =
    typename ::boost::type_erasure::detail::first_placeholder_index<
        ::boost::remove_cv_t< ::boost::remove_reference_t<T> >...
    >::type;

#endif

template<class Base, class Tn, int I, class... T>
using free_param_t =
    typename ::boost::mpl::eval_if_c<(::boost::type_erasure::detail::first_placeholder_index_t<T...>::value == I),
            ::boost::type_erasure::detail::maybe_const_this_param<Tn, Base>, \
            ::boost::type_erasure::as_param<Base, Tn>
    >::type;

template<class Sig, class ID>
struct free_interface_chooser
{
    template<class Base, template<class> class C, template<class...> class F>
    using apply = Base;
};

template<class R, class... A>
struct free_interface_chooser<
    R(A...),
    typename ::boost::type_erasure::detail::first_placeholder<
        ::boost::remove_cv_t< ::boost::remove_reference_t<A> >...>::type>
{
    template<class Base, template<class> class C, template<class...> class F>
    using apply = F<R(A...), Base,
        ::boost::type_erasure::detail::make_index_list_t<sizeof...(A)> >;
};

template<class Sig, template<class> class C, template<class...> class F>
struct free_choose_interface {
    template<class Concept, class Base, class ID>
    using apply = typename free_interface_chooser<Sig, ID>::template apply<Base, C, F>;
};

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_I(concept_name, function_name)              \
template<class Sig>                                                         \
struct concept_name;                                                        \
                                                                            \
namespace boost_type_erasure_impl {                                         \
                                                                            \
template<class Sig, class Base, class Idx>                                  \
struct concept_name ## _free_interface;                                     \
template<class R, class... T, class Base, int... I>                         \
struct concept_name ## _free_interface<R(T...), Base, ::boost::type_erasure::index_list<I...> > : Base {\
    friend ::boost::type_erasure::rebind_any_t<Base, R>                     \
    function_name(                                                          \
        ::boost::type_erasure::detail::free_param_t<Base, T, I, T...>... t) \
    {                                                                       \
        return ::boost::type_erasure::call(                                 \
            concept_name<R(T...)>(),                                        \
            std::forward< ::boost::type_erasure::detail::free_param_t<Base, T, I, T...> >(t)...);\
    }                                                                       \
};                                                                          \
                                                                            \
template<class Sig>                                                         \
struct concept_name ## free;                                                \
                                                                            \
template<class R, class... T>                                               \
struct concept_name ## free<R(T...)> {                                      \
    static R apply(T... t)                                                  \
    { return function_name(std::forward<T>(t)...); }                        \
};                                                                          \
                                                                            \
template<class... T>                                                        \
struct concept_name ## free<void(T...)> {                                   \
    static void apply(T... t)                                               \
    { function_name(std::forward<T>(t)...); }                               \
};                                                                          \
                                                                            \
}                                                                           \
                                                                            \
template<class Sig>                                                         \
struct concept_name :                                                       \
    boost_type_erasure_impl::concept_name##free<Sig>                        \
{};                                                                         \
                                                                            \
template<class Sig>                                                         \
::boost::type_erasure::detail::free_choose_interface<Sig, concept_name,     \
    boost_type_erasure_impl::concept_name ## _free_interface>               \
boost_type_erasure_find_interface(concept_name<Sig>);

#define BOOST_TYPE_ERASURE_FREE_SIMPLE(name, ...) \
    BOOST_TYPE_ERASURE_FREE_I(has_ ## name, name)

#define BOOST_TYPE_ERASURE_FREE_NS_I(concept_name, name)  \
    BOOST_TYPE_ERASURE_FREE_I(concept_name, name)

#define BOOST_TYPE_ERASURE_FREE_NS(concept_name, name)      \
    BOOST_TYPE_ERASURE_OPEN_NAMESPACE(concept_name)         \
    BOOST_TYPE_ERASURE_FREE_NS_I(BOOST_PP_SEQ_ELEM(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(concept_name)), concept_name), name) \
    BOOST_TYPE_ERASURE_CLOSE_NAMESPACE(concept_name)

#define BOOST_TYPE_ERASURE_FREE_NAMED(concept_name, name, ...)  \
    BOOST_PP_IF(BOOST_PP_IS_BEGIN_PARENS(concept_name),         \
        BOOST_TYPE_ERASURE_FREE_NS,                             \
        BOOST_TYPE_ERASURE_FREE_I)                              \
    (concept_name, name)

#define BOOST_TYPE_ERASURE_FREE_CAT(x, y) x y

#define BOOST_TYPE_ERASURE_FREE(name, ...)              \
    BOOST_TYPE_ERASURE_FREE_CAT(                        \
        BOOST_PP_IF(BOOST_VMD_IS_EMPTY(__VA_ARGS__),    \
            BOOST_TYPE_ERASURE_FREE_SIMPLE,             \
            BOOST_TYPE_ERASURE_FREE_NAMED),             \
        (name, __VA_ARGS__))

#else

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_II(qual_name, concept_name, function_name)  \
    BOOST_TYPE_ERASURE_OPEN_NAMESPACE(qual_name)                        \
                                                                        \
    template<class Sig>                                                 \
    struct concept_name;                                                \
                                                                        \
    template<class R, class... T>                                       \
    struct concept_name<R(T...)> {                                      \
        static R apply(T... t)                                          \
        { return function_name(std::forward<T>(t)...); }                \
    };                                                                  \
                                                                        \
    template<class... T>                                                \
    struct concept_name<void(T...)> {                                   \
        static void apply(T... t)                                       \
        { function_name(std::forward<T>(t)...); }                       \
    };                                                                  \
                                                                        \
    BOOST_TYPE_ERASURE_CLOSE_NAMESPACE(qual_name)                       \
                                                                        \
    namespace boost {                                                   \
    namespace type_erasure {                                            \
                                                                        \
    template<class Sig, class Base, class Idx>                          \
    struct inject ## concept_name;                                      \
    template<class R, class... T, class Base, int... I>                 \
    struct inject ## concept_name<R(T...), Base, index_list<I...> > : Base {\
        typedef typename ::boost::type_erasure::detail::first_placeholder_index<    \
            typename ::boost::remove_cv<                                \
                typename ::boost::remove_reference<T>::type             \
            >::type...                                                  \
        >::type _boost_type_erasure_free_p_idx;                         \
        friend typename ::boost::type_erasure::rebind_any<Base, R>::type\
        function_name(                                                  \
            typename ::boost::mpl::eval_if_c<(_boost_type_erasure_free_p_idx::value == I), \
                ::boost::type_erasure::detail::maybe_const_this_param<T, Base>, \
                ::boost::type_erasure::as_param<Base, T>                \
            >::type... t)                                               \
       {                                                                \
            return ::boost::type_erasure::call(                         \
                BOOST_TYPE_ERASURE_QUALIFIED_NAME(qual_name)<R(T...)>(),\
                std::forward<typename ::boost::mpl::eval_if_c<(_boost_type_erasure_free_p_idx::value == I), \
                    ::boost::type_erasure::detail::maybe_const_this_param<T, Base>, \
                    ::boost::type_erasure::as_param<Base, T>            \
                >::type>(t)...);                                        \
        }                                                               \
    };                                                                  \
                                                                        \
    template<class R, class... T, class Base>                           \
    struct concept_interface<                                           \
        BOOST_TYPE_ERASURE_QUALIFIED_NAME(qual_name)<R(T...)>,          \
        Base,                                                           \
        typename ::boost::type_erasure::detail::first_placeholder<      \
            typename ::boost::remove_cv<typename ::boost::remove_reference<T>::type>::type...>::type  \
    > :  inject ## concept_name<R(T...), Base, typename ::boost::type_erasure::detail::make_index_list<sizeof...(T)>::type>\
    {};                                                                 \
                                                                        \
    }                                                                   \
    }

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_FREE_I(namespace_name, concept_name, function_name)              \
    BOOST_TYPE_ERASURE_FREE_II(namespace_name, concept_name, function_name)

#define BOOST_TYPE_ERASURE_FREE(qualified_name, function_name, ...)                         \
    BOOST_TYPE_ERASURE_FREE_I(                                                              \
        qualified_name,                                                                     \
        BOOST_PP_SEQ_ELEM(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(qualified_name)), qualified_name), \
        function_name)

#endif

}
}
}

#endif

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