Imported Upstream version 1.49.0upstream/1.49.0

1 files changed, 230 insertions, 0 deletions

diff --git a/boost/bimap/unordered_set_of.hpp b/boost/bimap/unordered_set_of.hpp
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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 unordered_set_of.hpp
+/// \brief Include support for unordered_set constrains for the bimap container
+
+#ifndef BOOST_BIMAP_UNORDERED_SET_OF_HPP
+#define BOOST_BIMAP_UNORDERED_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 <functional>
+#include <boost/functional/hash.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/multi_index/hashed_index.hpp>
+
+#include <boost/bimap/views/unordered_map_view.hpp>
+#include <boost/bimap/views/unordered_set_view.hpp>
+
+namespace boost {
+namespace bimaps {
+
+/// \brief Set Type Specification
+/**
+This struct is used to specify an unordered_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.
+It has the same syntax that an tr1::unordered_set instantiation,
+except that the allocator cannot be specified. The rationale behind
+this difference is that the allocator is not part of the
+unordered_set type specification, rather it is a container
+configuration parameter.
+The first parameter is the type of the objects in the set, the
+second one is a Hash Functor that takes objects of this type, and
+the third one is a Functor that compares them for equality.
+Bimap binding metafunctions can be used with this class in
+the following way:
+
+\code
+using namespace support;
+
+BOOST_STATIC_ASSERT( is_set_type_of< unordered_set_of<Type> >::value )
+
+BOOST_STATIC_ASSERT
+(
+     is_same
+     <
+        unordered_set_of<Type,HashFunctor,EqualKey>::index_bind
+        <
+            KeyExtractor,
+            Tag
+
+        >::type,
+
+        hashed_unique< tag<Tag>, KeyExtractor, HashFunctor, EqualKey >
+
+    >::value
+)
+
+typedef bimap
+<
+    unordered_set_of<Type>, RightKeyType
+
+> bimap_with_left_type_as_unordered_set;
+
+BOOST_STATIC_ASSERT
+(
+    is_same
+    <
+        unordered_set_of<Type>::map_view_bind
+        <
+            member_at::left,
+            bimap_with_left_type_as_unordered_set
+
+        >::type,
+
+        unordered_map_view
+        <
+            member_at::left,
+            bimap_with_left_type_as_unordered_set
+        >
+
+    >::value
+)
+
+\endcode
+
+See also unordered_set_of_relation.
+                                                                        **/
+
+template
+<
+    class KeyType,
+    class HashFunctor   = hash< BOOST_DEDUCED_TYPENAME 
+        ::boost::bimaps::tags::support::value_type_of<KeyType>::type >,
+    class EqualKey      = std::equal_to< BOOST_DEDUCED_TYPENAME 
+        ::boost::bimaps::tags::support::value_type_of<KeyType>::type >
+>
+struct unordered_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;
+
+    /// Hash Functor that takes value_type objects
+    typedef HashFunctor     hasher;
+
+    /// Functor that compare two value_type objects for equality
+    typedef EqualKey        key_equal;
+
+    struct lazy_concept_checked
+    {
+        BOOST_CLASS_REQUIRE ( value_type,
+                              boost, AssignableConcept );
+
+        BOOST_CLASS_REQUIRE3( hasher, std::size_t, value_type,
+                              boost, UnaryFunctionConcept );
+
+        BOOST_CLASS_REQUIRE4( key_equal, bool, value_type, value_type,
+                              boost, BinaryFunctionConcept );
+
+        typedef unordered_set_of type; 
+    };
+
+    BOOST_BIMAP_GENERATE_INDEX_BINDER_2CP(
+
+        // binds to
+        multi_index::hashed_unique,
+
+        // with
+        hasher,
+        key_equal
+    )
+
+    BOOST_BIMAP_GENERATE_MAP_VIEW_BINDER(
+
+        // binds to
+        views::unordered_map_view
+    )
+
+    BOOST_BIMAP_GENERATE_SET_VIEW_BINDER(
+
+        // binds to
+        views::unordered_set_view
+    )
+
+    typedef mpl::bool_<false> mutable_key;
+};
+
+
+/// \brief Set Of Relation Specification
+/**
+This struct is similar to unordered_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. This struct implements internally
+a metafunction named bind_to that manages the quite complicated
+task of finding the right type of the set for the relation.
+
+\code
+template<class Relation>
+struct bind_to
+{
+    typedef -unspecified- type;
+};
+\endcode
+
+See also unordered_set_of, is_set_type_of_relation.
+                                                                **/
+
+template
+<
+    class HashFunctor   = hash< _relation >,
+    class EqualKey      = std::equal_to< _relation >
+>
+struct unordered_set_of_relation : public ::boost::bimaps::detail::set_type_of_relation_tag
+{
+    /// Hash Functor that takes value_type objects
+    typedef HashFunctor     hasher;
+
+    /// Functor that compare two value_type objects for equality
+    typedef EqualKey        key_equal;
+
+
+    BOOST_BIMAP_GENERATE_RELATION_BINDER_2CP(
+
+        // binds to
+        unordered_set_of,
+
+        // with
+        hasher,
+        key_equal
+    )
+
+    typedef mpl::bool_<false>  left_mutable_key;
+    typedef mpl::bool_<false> right_mutable_key;
+};
+
+
+} // namespace bimaps
+} // namespace boost
+
+
+#endif // BOOST_BIMAP_UNORDERED_SET_OF_HPP
+