summaryrefslogtreecommitdiff
path: root/boost/intrusive/detail/generic_hook.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'boost/intrusive/detail/generic_hook.hpp')
-rw-r--r--boost/intrusive/detail/generic_hook.hpp209
1 files changed, 209 insertions, 0 deletions
diff --git a/boost/intrusive/detail/generic_hook.hpp b/boost/intrusive/detail/generic_hook.hpp
new file mode 100644
index 0000000..fc35610
--- /dev/null
+++ b/boost/intrusive/detail/generic_hook.hpp
@@ -0,0 +1,209 @@
+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2007-2009
+//
+// 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)
+//
+// See http://www.boost.org/libs/intrusive for documentation.
+//
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTRUSIVE_GENERIC_HOOK_HPP
+#define BOOST_INTRUSIVE_GENERIC_HOOK_HPP
+
+#include <boost/intrusive/detail/config_begin.hpp>
+#include <boost/intrusive/intrusive_fwd.hpp>
+#include <boost/intrusive/pointer_traits.hpp>
+#include <boost/intrusive/link_mode.hpp>
+#include <boost/intrusive/detail/utilities.hpp>
+#include <boost/intrusive/detail/mpl.hpp>
+#include <boost/intrusive/pointer_traits.hpp>
+#include <boost/static_assert.hpp>
+
+namespace boost {
+namespace intrusive {
+namespace detail {
+
+/// @cond
+
+enum
+{ NoBaseHook
+, ListBaseHook
+, SlistBaseHook
+, SetBaseHook
+, UsetBaseHook
+, SplaySetBaseHook
+, AvlSetBaseHook
+, BsSetBaseHook
+, AnyBaseHook
+};
+
+struct no_default_definer{};
+
+template <class Hook, unsigned int>
+struct default_definer;
+
+template <class Hook>
+struct default_definer<Hook, ListBaseHook>
+{ typedef Hook default_list_hook; };
+
+template <class Hook>
+struct default_definer<Hook, SlistBaseHook>
+{ typedef Hook default_slist_hook; };
+
+template <class Hook>
+struct default_definer<Hook, SetBaseHook>
+{ typedef Hook default_set_hook; };
+
+template <class Hook>
+struct default_definer<Hook, UsetBaseHook>
+{ typedef Hook default_uset_hook; };
+
+template <class Hook>
+struct default_definer<Hook, SplaySetBaseHook>
+{ typedef Hook default_splay_set_hook; };
+
+template <class Hook>
+struct default_definer<Hook, AvlSetBaseHook>
+{ typedef Hook default_avl_set_hook; };
+
+template <class Hook>
+struct default_definer<Hook, BsSetBaseHook>
+{ typedef Hook default_bs_set_hook; };
+
+template <class Hook>
+struct default_definer<Hook, AnyBaseHook>
+{ typedef Hook default_any_hook; };
+
+template <class Hook, unsigned int BaseHookType>
+struct make_default_definer
+{
+ typedef typename detail::if_c
+ < BaseHookType != 0
+ , default_definer<Hook, BaseHookType>
+ , no_default_definer>::type type;
+};
+
+template
+ < class GetNodeAlgorithms
+ , class Tag
+ , link_mode_type LinkMode
+ , int HookType
+ >
+struct make_node_holder
+{
+ typedef typename detail::if_c
+ <!detail::is_same<Tag, member_tag>::value
+ , detail::node_holder
+ < typename GetNodeAlgorithms::type::node
+ , Tag
+ , LinkMode
+ , HookType>
+ , typename GetNodeAlgorithms::type::node
+ >::type type;
+};
+
+/// @endcond
+
+template
+ < class GetNodeAlgorithms
+ , class Tag
+ , link_mode_type LinkMode
+ , int HookType
+ >
+class generic_hook
+ /// @cond
+
+ //If the hook is a base hook, derive generic hook from detail::node_holder
+ //so that a unique base class is created to convert from the node
+ //to the type. This mechanism will be used by base_hook_traits.
+ //
+ //If the hook is a member hook, generic hook will directly derive
+ //from the hook.
+ : public make_default_definer
+ < generic_hook<GetNodeAlgorithms, Tag, LinkMode, HookType>
+ , detail::is_same<Tag, default_tag>::value*HookType
+ >::type
+ , public make_node_holder<GetNodeAlgorithms, Tag, LinkMode, HookType>::type
+ /// @endcond
+{
+ /// @cond
+ typedef typename GetNodeAlgorithms::type node_algorithms;
+ typedef typename node_algorithms::node node;
+ typedef typename node_algorithms::node_ptr node_ptr;
+ typedef typename node_algorithms::const_node_ptr const_node_ptr;
+
+ public:
+ struct boost_intrusive_tags
+ {
+ static const int hook_type = HookType;
+ static const link_mode_type link_mode = LinkMode;
+ typedef Tag tag;
+ typedef typename GetNodeAlgorithms::type::node_traits node_traits;
+ static const bool is_base_hook = !detail::is_same<Tag, member_tag>::value;
+ static const bool safemode_or_autounlink =
+ (int)link_mode == (int)auto_unlink || (int)link_mode == (int)safe_link;
+ };
+
+ node_ptr this_ptr()
+ { return pointer_traits<node_ptr>::pointer_to(static_cast<node&>(*this)); }
+
+ const_node_ptr this_ptr() const
+ { return pointer_traits<const_node_ptr>::pointer_to(static_cast<const node&>(*this)); }
+
+ public:
+ /// @endcond
+
+ generic_hook()
+ {
+ if(boost_intrusive_tags::safemode_or_autounlink){
+ node_algorithms::init(this->this_ptr());
+ }
+ }
+
+ generic_hook(const generic_hook& )
+ {
+ if(boost_intrusive_tags::safemode_or_autounlink){
+ node_algorithms::init(this->this_ptr());
+ }
+ }
+
+ generic_hook& operator=(const generic_hook& )
+ { return *this; }
+
+ ~generic_hook()
+ {
+ destructor_impl
+ (*this, detail::link_dispatch<boost_intrusive_tags::link_mode>());
+ }
+
+ void swap_nodes(generic_hook &other)
+ {
+ node_algorithms::swap_nodes
+ (this->this_ptr(), other.this_ptr());
+ }
+
+ bool is_linked() const
+ {
+ //is_linked() can be only used in safe-mode or auto-unlink
+ BOOST_STATIC_ASSERT(( boost_intrusive_tags::safemode_or_autounlink ));
+ return !node_algorithms::unique(this->this_ptr());
+ }
+
+ void unlink()
+ {
+ BOOST_STATIC_ASSERT(( (int)boost_intrusive_tags::link_mode == (int)auto_unlink ));
+ node_algorithms::unlink(this->this_ptr());
+ node_algorithms::init(this->this_ptr());
+ }
+};
+
+} //namespace detail
+} //namespace intrusive
+} //namespace boost
+
+#include <boost/intrusive/detail/config_end.hpp>
+
+#endif //BOOST_INTRUSIVE_GENERIC_HOOK_HPP