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/relaxed.hpp (2646B)

// 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_RELAXED_HPP_INCLUDED
#define BOOST_TYPE_ERASURE_RELAXED_HPP_INCLUDED

#include <boost/mpl/vector.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/is_sequence.hpp>
#include <boost/mpl/find_if.hpp>
#include <boost/mpl/not.hpp>
#include <boost/mpl/end.hpp>
#include <boost/type_traits/is_same.hpp>

namespace boost {
namespace type_erasure {

template<class T>
struct is_relaxed;

namespace detail {

template<class T>
struct is_relaxed_impl :
    ::boost::mpl::not_<
        typename ::boost::is_same<
            typename ::boost::mpl::find_if<
                T,
                ::boost::type_erasure::is_relaxed< ::boost::mpl::_1>
            >::type,
            typename ::boost::mpl::end<T>::type
        >::type
    >::type
{};

}

/**
 * This special concept enables various useful default behavior that
 * makes @ref any act like an ordinary object.  By default @ref any
 * forwards all operations to the underlying type, and provides only
 * the operations that are specified in its @c Concept.
 *
 * In detail, @ref relaxed enables the following:
 * - A raw value can be assigned to an @ref any.  This will replace
 *   the value stored by the @ref any.  (But note that if @ref assignable
 *   is present, it takes priority.)
 * - assignment of @ref any uses the constructor if it can't
 *   use @ref assignable (either because @ref assignable is missing,
 *   or because the stored types do not match).
 * - default construction of @ref any is allowed and creates a null any.
 * - @ref equality_comparable "equality_comparable": If the types do not
 *   match, it will return false.
 * - @ref less_than_comparable "less_than_comparable": If the types do not
 *   match, the ordering will be according to
 *   @c std::type_info::before.
 * - if the arguments to any other function do not match, it will throw
 *   a @ref bad_function_call exception instead of having undefined
 *   behavior.
 */
struct relaxed : ::boost::mpl::vector0<> {};

/**
 * A metafunction indicating whether @c Concept
 * includes @ref relaxed.
 */
template<class Concept>
struct is_relaxed :
    ::boost::mpl::eval_if< ::boost::mpl::is_sequence<Concept>,
        ::boost::type_erasure::detail::is_relaxed_impl<Concept>,
        ::boost::mpl::false_
    >::type
{};

/** INTERNAL ONLY */
template<>
struct is_relaxed< ::boost::type_erasure::relaxed> :
    ::boost::mpl::true_
{};

}
}

#endif

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