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+// Boost.Bimap
+//
+// Copyright (c) 2006-2007 Matias Capeletto
+//
+// 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)
+
+/// \file unconstrained_set_of.hpp
+/// \brief Include support for set constrains for the bimap container
+
+#ifndef BOOST_BIMAP_UNCONSTRAINED_SET_OF_HPP
+#define BOOST_BIMAP_UNCONSTRAINED_SET_OF_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER>=1200)
+#pragma once
+#endif
+
+#include <boost/config.hpp>
+
+#include <boost/bimap/detail/user_interface_config.hpp>
+
+#include <boost/mpl/bool.hpp>
+
+#include <boost/concept_check.hpp>
+
+#include <boost/bimap/detail/concept_tags.hpp>
+
+#include <boost/bimap/tags/support/value_type_of.hpp>
+
+#include <boost/bimap/detail/generate_index_binder.hpp>
+#include <boost/bimap/detail/generate_view_binder.hpp>
+#include <boost/bimap/detail/generate_relation_binder.hpp>
+
+#include <boost/bimap/views/unconstrained_map_view.hpp>
+#include <boost/bimap/views/unconstrained_set_view.hpp>
+
+namespace boost {
+namespace bimaps {
+
+/// \brief Set Type Specification
+/**
+This struct is used to specify a set specification.
+It is not a container, it is just a metaprogramming facility to
+express the type of a set. Generally, this specification will
+be used in other place to create a container.
+The first parameter is the type of the objects in the set.
+
+\code
+
+using namespace support;
+
+BOOST_STATIC_ASSERT( is_set_type_of< unconstrained_set_of<Type> >::value )
+
+\endcode
+
+See also unconstrained_set_of_relation.
+                                                                        **/
+
+template
+<
+    class KeyType
+>
+struct unconstrained_set_of : public ::boost::bimaps::detail::set_type_of_tag
+{
+    /// User type, can be tagged
+    typedef KeyType user_type;
+
+    /// Type of the object that will be stored in the container
+    typedef BOOST_DEDUCED_TYPENAME ::boost::bimaps::tags::support::
+        value_type_of<user_type>::type value_type;
+
+    struct lazy_concept_checked
+    {
+        BOOST_CLASS_REQUIRE ( value_type,
+                              boost, AssignableConcept );
+
+        typedef unconstrained_set_of type;
+    };
+
+    BOOST_BIMAP_GENERATE_INDEX_BINDER_FAKE
+
+    BOOST_BIMAP_GENERATE_MAP_VIEW_BINDER(
+
+        // binds to
+        views::unconstrained_map_view
+    )
+
+    BOOST_BIMAP_GENERATE_SET_VIEW_BINDER(
+
+        // binds to
+        views::unconstrained_set_view
+    )
+
+    typedef mpl::bool_<true> mutable_key;
+};
+
+/// \brief Set Of Relation Specification
+/**
+This struct is similar to unconstrained_set_of but it is bind
+logically to a relation. It is used in the bimap instantiation to
+specify the desired type of the main view.
+
+See also unconstrained_set_of, is_set_type_of_relation.
+                                                                **/
+
+struct unconstrained_set_of_relation : public ::boost::bimaps::detail::set_type_of_relation_tag
+{
+
+    BOOST_BIMAP_GENERATE_RELATION_BINDER_0CP(
+
+        // binds to
+        unconstrained_set_of
+    )
+
+    typedef mpl::bool_<true>  left_mutable_key;
+    typedef mpl::bool_<true> right_mutable_key;
+};
+
+#ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
+
+namespace detail {
+
+template<class T>
+struct is_unconstrained_set_of :
+    ::boost::mpl::false_ {};
+
+template<class T>
+struct is_unconstrained_set_of< unconstrained_set_of<T> > :
+    ::boost::mpl::true_ {};
+
+} // namespace detail
+
+#endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
+
+} // namespace bimaps
+} // namespace boost
+
+
+/** \struct boost::bimaps::detail::is_unconstrained_set_of
+\brief Trait to check if a type is unconstrained_set_of.
+\code
+template< class T >
+struct is_unconstrained_set_of;
+\endcode
+                                                                            **/
+
+
+#endif // BOOST_BIMAP_UNCONSTRAINED_SET_OF_HPP
+