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/operators.hpp (23235B)

// 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)
//
// $Id$

#ifndef BOOST_TYPE_ERASURE_OPERATORS_HPP_INCLUDED
#define BOOST_TYPE_ERASURE_OPERATORS_HPP_INCLUDED

#include <iosfwd>
#include <boost/utility/enable_if.hpp>
#include <boost/type_erasure/detail/const.hpp>
#include <boost/type_erasure/call.hpp>
#include <boost/type_erasure/concept_interface.hpp>
#include <boost/type_erasure/placeholder.hpp>
#include <boost/type_erasure/concept_of.hpp>
#include <boost/type_erasure/derived.hpp>
#include <boost/type_erasure/rebind_any.hpp>
#include <boost/type_erasure/param.hpp>
#include <boost/type_erasure/check_match.hpp>
#include <boost/type_erasure/relaxed.hpp>
#include <boost/type_erasure/typeid_of.hpp>

namespace boost {
namespace type_erasure {

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_UNARY_INPLACE_OPERATOR(name, op)                         \
    template<class T = _self>                                                       \
    struct name                                                                     \
    {                                                                               \
        static void apply(T& arg) { op arg; }                                       \
    };                                                                              \
                                                                                    \
    template<class T, class Base>                                                   \
    struct concept_interface<name<T>, Base, T,                                      \
        typename ::boost::enable_if<                                                \
            detail::should_be_non_const<T, Base>                                    \
        >::type                                                                     \
    > : Base                                                                        \
    {                                                                               \
        typedef typename ::boost::type_erasure::derived<Base>::type _derived;       \
        _derived& operator op()                                                     \
        {                                                                           \
            ::boost::type_erasure::call(name<T>(), *this);                          \
            return static_cast<_derived&>(*this);                                   \
        }                                                                           \
        typename ::boost::type_erasure::rebind_any<Base, T>::type operator op(int)  \
        {                                                                           \
            typename ::boost::type_erasure::rebind_any<Base, T>::type result(       \
                static_cast<_derived&>(*this));                                     \
            ::boost::type_erasure::call(name<T>(), *this);                          \
            return result;                                                          \
        }                                                                           \
    };                                                                              \
                                                                                    \
    template<class T, class Base>                                                   \
    struct concept_interface<name<T>, Base, T,                                      \
        typename ::boost::enable_if<                                                \
            detail::should_be_const<T, Base>                                        \
        >::type                                                                     \
    > : Base                                                                        \
    {                                                                               \
        typedef typename ::boost::type_erasure::derived<Base>::type _derived;       \
        const _derived& operator op() const                                         \
        {                                                                           \
            ::boost::type_erasure::call(name<T>(), *this);                          \
            return static_cast<const _derived&>(*this);                             \
        }                                                                           \
        typename ::boost::type_erasure::rebind_any<Base, T>::type operator op(int) const \
        {                                                                           \
            typename ::boost::type_erasure::rebind_any<Base, T>::type result(       \
                static_cast<const _derived&>(*this));                               \
            ::boost::type_erasure::call(name<T>(), *this);                          \
            return result;                                                          \
        }                                                                           \
    };

/**
 * The @ref incrementable concept allow pre and
 * post increment on an @ref any.  The contained
 * type must provide a pre-increment operator.
 */
BOOST_TYPE_ERASURE_UNARY_INPLACE_OPERATOR(incrementable, ++)
/**
 * The @ref decrementable concept allow pre and
 * post decrement on an @ref any.  The contained
 * type must provide a pre-decrement operator.
 */
BOOST_TYPE_ERASURE_UNARY_INPLACE_OPERATOR(decrementable, --)

#undef BOOST_TYPE_ERASURE_UNARY_INPLACE_OPERATOR

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_UNARY_OPERATOR(name, op)                                     \
    template<class T = _self, class R = T>                                              \
    struct name                                                                         \
    {                                                                                   \
        static R apply(const T& arg) { return op arg; }                                 \
    };                                                                                  \
                                                                                        \
    template<class T, class R, class Base>                                              \
    struct concept_interface<name<T, R>, Base, T> : Base                                \
    {                                                                                   \
        typename ::boost::type_erasure::rebind_any<Base, R>::type operator op() const   \
        {                                                                               \
            return ::boost::type_erasure::call(name<T, R>(), *this);                    \
        }                                                                               \
    };

/**
 * The @ref complementable concept allow use of the bitwise
 * complement operator on an @ref any.
 */
BOOST_TYPE_ERASURE_UNARY_OPERATOR(complementable, ~)
/**
 * The @ref negatable concept allow use of the unary
 * minus operator on an @ref any.
 */
BOOST_TYPE_ERASURE_UNARY_OPERATOR(negatable, -)

#undef BOOST_TYPE_ERASURE_UNARY_OPERATOR

template<class R, class T = _self>
struct dereferenceable
{
    static R apply(const T& arg) { return *arg; }
};

/// \cond show_operators

template<class R, class T, class Base>
struct concept_interface<dereferenceable<R, T>, Base, T> : Base
{
    typename ::boost::type_erasure::rebind_any<Base, R>::type operator*() const
    {
        return ::boost::type_erasure::call(dereferenceable<R, T>(), *this);
    }
};

/// \endcond

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_BINARY_OPERATOR(name, op)                        \
    template<class T = _self, class U = T, class R = T>                     \
    struct name                                                             \
    {                                                                       \
        static R apply(const T& lhs, const U& rhs) { return lhs op rhs; }   \
    };                                                                      \
                                                                            \
    template<class T, class U, class R, class Base>                         \
    struct concept_interface<name<T, U, R>, Base, T> : Base                 \
    {                                                                       \
        friend typename rebind_any<Base, R>::type                           \
        operator op(const typename derived<Base>::type& lhs,                \
                    typename as_param<Base, const U&>::type rhs)            \
        {                                                                   \
            return ::boost::type_erasure::call(name<T, U, R>(), lhs, rhs);  \
        }                                                                   \
    };                                                                      \
                                                                            \
    template<class T, class U, class R, class Base>                         \
    struct concept_interface<                                               \
        name<T, U, R>,                                                      \
        Base,                                                               \
        U,                                                                  \
        typename ::boost::disable_if<                                       \
            ::boost::type_erasure::is_placeholder<T> >::type                \
    > : Base                                                                \
    {                                                                       \
        friend typename rebind_any<Base, R>::type                           \
        operator op(const T& lhs,                                           \
                    const typename derived<Base>::type& rhs)                \
        {                                                                   \
            return ::boost::type_erasure::call(name<T, U, R>(), lhs, rhs);  \
        }                                                                   \
    };

BOOST_TYPE_ERASURE_BINARY_OPERATOR(addable, +)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(subtractable, -)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(multipliable, *)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(dividable, /)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(modable, %)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(left_shiftable, <<)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(right_shiftable, >>)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(bitandable, &)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(bitorable, |)
BOOST_TYPE_ERASURE_BINARY_OPERATOR(bitxorable, ^)

#undef BOOST_TYPE_ERASURE_BINARY_OPERATOR

/** INTERNAL ONLY */
#define BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(name, op)                    \
    template<class T = _self, class U = T>                                  \
    struct name                                                             \
    {                                                                       \
        static void apply(T& lhs, const U& rhs) { lhs op rhs; }             \
    };                                                                      \
                                                                            \
    template<class T, class U, class Base>                                  \
    struct concept_interface<name<T, U>, Base, T,                           \
        typename ::boost::disable_if<                                       \
            ::boost::is_same<                                               \
                typename ::boost::type_erasure::placeholder_of<Base>::type, \
                const T&                                                    \
            >                                                               \
        >::type                                                             \
    > : Base                                                                \
    {                                                                       \
        friend typename detail::non_const_this_param<Base>::type&           \
        operator op(typename detail::non_const_this_param<Base>::type& lhs, \
                    typename as_param<Base, const U&>::type rhs)            \
        {                                                                   \
            ::boost::type_erasure::call(name<T, U>(),lhs, rhs);             \
            return lhs;                                                     \
        }                                                                   \
    };                                                                      \
                                                                            \
    template<class T, class U, class Base>                                  \
    struct concept_interface<                                               \
        name<T, U>,                                                         \
        Base,                                                               \
        U,                                                                  \
        typename ::boost::disable_if<                                       \
            ::boost::type_erasure::is_placeholder<T> >::type                \
    > : Base                                                                \
    {                                                                       \
        friend T&                                                           \
        operator op(T& lhs, const typename derived<Base>::type& rhs)        \
        {                                                                   \
            ::boost::type_erasure::call(name<T, U>(),lhs, rhs);             \
            return lhs;                                                     \
        }                                                                   \
    };

BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(add_assignable, +=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(subtract_assignable, -=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(multiply_assignable, *=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(divide_assignable, /=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(mod_assignable, %=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(left_shift_assignable, <<=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(right_shift_assignable, >>=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(bitand_assignable, &=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(bitor_assignable, |=)
BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR(bitxor_assignable, ^=)

#undef BOOST_TYPE_ERASURE_ASSIGNMENT_OPERATOR

template<class T = _self, class U = T>
struct equality_comparable
{
    static bool apply(const T& lhs, const U& rhs) { return lhs == rhs; }
};

/// \cond show_operators

template<class T, class U, class Base>
struct concept_interface<equality_comparable<T, U>, Base, T> : Base
{
    friend bool operator==(const typename derived<Base>::type& lhs,
                           typename as_param<Base, const U&>::type rhs)
    {
        if(::boost::type_erasure::check_match(equality_comparable<T, U>(), lhs, rhs)) {
            return ::boost::type_erasure::unchecked_call(equality_comparable<T, U>(), lhs, rhs);
        } else {
            return false;
        }
    }
    friend bool operator!=(const typename derived<Base>::type& lhs,
                           typename as_param<Base, const U&>::type rhs)
    {
        return !(lhs == rhs);
    }
};

template<class T, class U, class Base>
struct concept_interface<
    equality_comparable<T, U>,
    Base,
    U,
    typename ::boost::disable_if< ::boost::type_erasure::is_placeholder<T> >::type
> : Base
{
    friend bool operator==(const T& lhs, const typename derived<Base>::type& rhs)
    {
        return ::boost::type_erasure::call(equality_comparable<T, U>(), lhs, rhs);
    }
    friend bool operator!=(const T& lhs, const typename derived<Base>::type& rhs)
    {
        return !(lhs == rhs);
    }
};

/// \endcond

template<class T = _self, class U = T>
struct less_than_comparable
{
    static bool apply(const T& lhs, const U& rhs) { return lhs < rhs; }
};

namespace detail {

template<class F, class T, class U>
bool less_impl(const F& f, const T& lhs, const U& rhs, ::boost::mpl::true_)
{
    if(::boost::type_erasure::check_match(f, lhs, rhs)) {
        return ::boost::type_erasure::unchecked_call(f, lhs, rhs);
    } else {
        return ::boost::type_erasure::typeid_of(
            static_cast<const typename derived<T>::type&>(lhs)
        ).before(
            ::boost::type_erasure::typeid_of(
                static_cast<const typename derived<U>::type&>(rhs)
            )
        ) != false;
    }
}

template<class F, class T, class U>
bool less_impl(const F& f, const T& lhs, const U& rhs, ::boost::mpl::false_)
{
    return ::boost::type_erasure::call(f, lhs, rhs);
}

}

/// \cond show_operators

template<class T, class Base>
struct concept_interface<less_than_comparable<T, T>, Base, T> : Base
{
    friend bool operator<(const typename derived<Base>::type& lhs,
                          typename as_param<Base, const T&>::type rhs)
    {
        return ::boost::type_erasure::detail::less_impl(
            less_than_comparable<T, T>(),
            lhs, rhs,
            ::boost::type_erasure::is_relaxed<
                typename ::boost::type_erasure::concept_of<Base>::type>());
    }
    friend bool operator>=(const typename derived<Base>::type& lhs,
                           typename as_param<Base, const T&>::type rhs)
    {
        return !(lhs < rhs);
    }
    friend bool operator>(typename as_param<Base, const T&>::type lhs,
                          const typename derived<Base>::type& rhs)
    {
        return rhs < lhs;
    }
    friend bool operator<=(typename as_param<Base, const T&>::type lhs,
                          const typename derived<Base>::type& rhs)
    {
        return !(rhs < lhs);
    }
};

template<class T, class U, class Base>
struct concept_interface<less_than_comparable<T, U>, Base, T> : Base
{
    friend bool operator<(const typename derived<Base>::type& lhs,
                          typename as_param<Base, const U&>::type rhs)
    {
        return ::boost::type_erasure::call(less_than_comparable<T, U>(), lhs, rhs);
    }
    friend bool operator>=(const typename derived<Base>::type& lhs,
                           typename as_param<Base, const U&>::type rhs)
    {
        return !(lhs < rhs);
    }
    friend bool operator>(typename as_param<Base, const U&>::type lhs,
                          const typename derived<Base>::type& rhs)
    {
        return rhs < lhs;
    }
    friend bool operator<=(typename as_param<Base, const U&>::type lhs,
                          const typename derived<Base>::type& rhs)
    {
        return !(rhs < lhs);
    }
};

template<class T, class U, class Base>
struct concept_interface<
    less_than_comparable<T, U>,
    Base,
    U,
    typename ::boost::disable_if< ::boost::type_erasure::is_placeholder<T> >::type
> : Base
{
    friend bool operator<(const T& lhs, const typename derived<Base>::type& rhs)
    {
        return ::boost::type_erasure::call(less_than_comparable<T, U>(), lhs, rhs);
    }
    friend bool operator>=(const T& lhs, const typename derived<Base>::type& rhs)
    {
        return !(lhs < rhs);
    }
    friend bool operator>(const typename derived<Base>::type& lhs, const T& rhs)
    {
        return rhs < lhs;
    }
    friend bool operator<=(const typename derived<Base>::type& lhs, const T& rhs)
    {
        return !(rhs < lhs);
    }
};

/// \endcond

template<class R, class T = _self, class N = std::ptrdiff_t>
struct subscriptable
{
    static R apply(T& arg, const N& index) { return arg[index]; }
};

/// \cond show_operators

template<class R, class T, class N, class Base>
struct concept_interface<subscriptable<R, T, N>, Base, typename ::boost::remove_const<T>::type,
    typename ::boost::enable_if<
        ::boost::type_erasure::detail::should_be_non_const<T, Base>
    >::type
> : Base
{
    typename ::boost::type_erasure::rebind_any<Base, R>::type operator[](
        typename ::boost::type_erasure::as_param<Base, const N&>::type index)
    {
        return ::boost::type_erasure::call(subscriptable<R, T, N>(), *this, index);
    }
};

template<class R, class T, class N, class Base>
struct concept_interface<subscriptable<R, T, N>, Base, typename ::boost::remove_const<T>::type,
    typename ::boost::enable_if<
        ::boost::type_erasure::detail::should_be_const<T, Base>
    >::type
> : Base
{
    typename ::boost::type_erasure::rebind_any<Base, R>::type operator[](
        typename ::boost::type_erasure::as_param<Base, const N&>::type index) const
    {
        return ::boost::type_erasure::call(subscriptable<R, const T, N>(), *this, index);
    }
};

/// \endcond

/**
 * The @ref ostreamable concept allows an @ref any to be
 * written to a @c std::ostream.
 */
template<class Os = std::ostream, class T = _self>
struct ostreamable
{
    static void apply(Os& out, const T& arg) { out << arg; }
};

/// \cond show_operators

template<class Base, class Os, class T>
struct concept_interface<ostreamable<Os, T>, Base, Os> : Base
{
    friend typename detail::non_const_this_param<Base>::type&
    operator<<(typename detail::non_const_this_param<Base>::type& lhs,
               typename ::boost::type_erasure::as_param<Base, const T&>::type rhs)
    {
        ::boost::type_erasure::call(ostreamable<Os, T>(), lhs, rhs);
        return lhs;
    }
};

template<class Base, class Os, class T>
struct concept_interface<
    ostreamable<Os, T>,
    Base,
    T,
    typename ::boost::disable_if< ::boost::type_erasure::is_placeholder<Os> >::type
> : Base
{
    friend Os&
    operator<<(Os& lhs,
               const typename ::boost::type_erasure::derived<Base>::type& rhs)
    {
        ::boost::type_erasure::call(ostreamable<Os, T>(), lhs, rhs);
        return lhs;
    }
};

/// \endcond

/**
 * The @ref istreamable concept allows an @ref any to be
 * read from a @c std::istream.
 */
template<class Is = std::istream, class T = _self>
struct istreamable
{
    static void apply(Is& out, T& arg) { out >> arg; }
};

/// \cond show_operators

template<class Base, class Is, class T>
struct concept_interface<istreamable<Is, T>, Base, Is> : Base
{
    friend typename detail::non_const_this_param<Base>::type&
    operator>>(typename detail::non_const_this_param<Base>::type& lhs,
               typename ::boost::type_erasure::as_param<Base, T&>::type rhs)
    {
        ::boost::type_erasure::call(istreamable<Is, T>(), lhs, rhs);
        return lhs;
    }
};

template<class Base, class Is, class T>
struct concept_interface<
    istreamable<Is, T>,
    Base,
    T,
    typename ::boost::disable_if< ::boost::type_erasure::is_placeholder<Is> >::type
> : Base
{
    friend Is&
    operator>>(Is& lhs,
               typename ::boost::type_erasure::derived<Base>::type& rhs)
    {
        ::boost::type_erasure::call(istreamable<Is, T>(), lhs, rhs);
        return lhs;
    }
};

/// \endcond

}
}

#endif

cmd: