boost/intrusive/any_hook.hpp
///////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2006-2013 // // 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_ANY_HOOK_HPP #define BOOST_INTRUSIVE_ANY_HOOK_HPP #include <boost/intrusive/detail/config_begin.hpp> #include <boost/intrusive/intrusive_fwd.hpp> #include <boost/intrusive/detail/utilities.hpp> #include <boost/intrusive/detail/any_node_and_algorithms.hpp> #include <boost/intrusive/options.hpp> #include <boost/intrusive/detail/generic_hook.hpp> #include <boost/intrusive/pointer_traits.hpp> namespace boost { namespace intrusive { /// @cond template<class VoidPointer> struct get_any_node_algo { typedef any_algorithms<VoidPointer> type; }; /// @endcond //! Helper metafunction to define a \c \c any_base_hook that yields to the same //! type when the same options (either explicitly or implicitly) are used. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class ...Options> #else template<class O1 = void, class O2 = void, class O3 = void> #endif struct make_any_base_hook { /// @cond typedef typename pack_options < hook_defaults, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3 #else Options... #endif >::type packed_options; typedef generic_hook < get_any_node_algo<typename packed_options::void_pointer> , typename packed_options::tag , packed_options::link_mode , AnyBaseHookId > implementation_defined; /// @endcond typedef implementation_defined type; }; //! Derive a class from this hook in order to store objects of that class //! in an intrusive container. //! //! The hook admits the following options: \c tag<>, \c void_pointer<> and //! \c link_mode<>. //! //! \c tag<> defines a tag to identify the node. //! The same tag value can be used in different classes, but if a class is //! derived from more than one \c any_base_hook, then each \c any_base_hook needs its //! unique tag. //! //! \c link_mode<> will specify the linking mode of the hook (\c normal_link, \c safe_link). //! //! \c void_pointer<> is the pointer type that will be used internally in the hook //! and the container configured to use this hook. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class ...Options> #else template<class O1, class O2, class O3> #endif class any_base_hook : public make_any_base_hook #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) <O1, O2, O3> #else <Options...> #endif ::type { #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) public: //! <b>Effects</b>: If link_mode is or \c safe_link //! initializes the node to an unlinked state. //! //! <b>Throws</b>: Nothing. any_base_hook(); //! <b>Effects</b>: If link_mode is or \c safe_link //! initializes the node to an unlinked state. The argument is ignored. //! //! <b>Throws</b>: Nothing. //! //! <b>Rationale</b>: Providing a copy-constructor //! makes classes using the hook STL-compliant without forcing the //! user to do some additional work. \c swap can be used to emulate //! move-semantics. any_base_hook(const any_base_hook& ); //! <b>Effects</b>: Empty function. The argument is ignored. //! //! <b>Throws</b>: Nothing. //! //! <b>Rationale</b>: Providing an assignment operator //! makes classes using the hook STL-compliant without forcing the //! user to do some additional work. \c swap can be used to emulate //! move-semantics. any_base_hook& operator=(const any_base_hook& ); //! <b>Effects</b>: If link_mode is \c normal_link, the destructor does //! nothing (ie. no code is generated). If link_mode is \c safe_link and the //! object is stored in a container an assertion is raised. //! //! <b>Throws</b>: Nothing. ~any_base_hook(); //! <b>Precondition</b>: link_mode must be \c safe_link. //! //! <b>Returns</b>: true, if the node belongs to a container, false //! otherwise. This function can be used to test whether \c container::iterator_to //! will return a valid iterator. //! //! <b>Complexity</b>: Constant bool is_linked() const; #endif }; //! Helper metafunction to define a \c \c any_member_hook that yields to the same //! type when the same options (either explicitly or implicitly) are used. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class ...Options> #else template<class O1 = void, class O2 = void, class O3 = void> #endif struct make_any_member_hook { /// @cond typedef typename pack_options < hook_defaults, #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) O1, O2, O3 #else Options... #endif >::type packed_options; typedef generic_hook < get_any_node_algo<typename packed_options::void_pointer> , member_tag , packed_options::link_mode , NoBaseHookId > implementation_defined; /// @endcond typedef implementation_defined type; }; //! Store this hook in a class to be inserted //! in an intrusive container. //! //! The hook admits the following options: \c void_pointer<> and //! \c link_mode<>. //! //! \c link_mode<> will specify the linking mode of the hook (\c normal_link or \c safe_link). //! //! \c void_pointer<> is the pointer type that will be used internally in the hook //! and the container configured to use this hook. #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) template<class ...Options> #else template<class O1, class O2, class O3> #endif class any_member_hook : public make_any_member_hook #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES) <O1, O2, O3> #else <Options...> #endif ::type { #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) public: //! <b>Effects</b>: If link_mode is or \c safe_link //! initializes the node to an unlinked state. //! //! <b>Throws</b>: Nothing. any_member_hook(); //! <b>Effects</b>: If link_mode is or \c safe_link //! initializes the node to an unlinked state. The argument is ignored. //! //! <b>Throws</b>: Nothing. //! //! <b>Rationale</b>: Providing a copy-constructor //! makes classes using the hook STL-compliant without forcing the //! user to do some additional work. \c swap can be used to emulate //! move-semantics. any_member_hook(const any_member_hook& ); //! <b>Effects</b>: Empty function. The argument is ignored. //! //! <b>Throws</b>: Nothing. //! //! <b>Rationale</b>: Providing an assignment operator //! makes classes using the hook STL-compliant without forcing the //! user to do some additional work. \c swap can be used to emulate //! move-semantics. any_member_hook& operator=(const any_member_hook& ); //! <b>Effects</b>: If link_mode is \c normal_link, the destructor does //! nothing (ie. no code is generated). If link_mode is \c safe_link and the //! object is stored in a container an assertion is raised. //! //! <b>Throws</b>: Nothing. ~any_member_hook(); //! <b>Precondition</b>: link_mode must be \c safe_link. //! //! <b>Returns</b>: true, if the node belongs to a container, false //! otherwise. This function can be used to test whether \c container::iterator_to //! will return a valid iterator. //! //! <b>Complexity</b>: Constant bool is_linked() const; #endif }; /// @cond namespace detail{ template<class ValueTraits> struct any_to_get_base_pointer_type { typedef typename pointer_traits<typename ValueTraits::hooktags::node_traits::node_ptr>::template rebind_pointer<void>::type type; }; template<class ValueTraits> struct any_to_get_member_pointer_type { typedef typename pointer_traits <typename ValueTraits::node_ptr>::template rebind_pointer<void>::type type; }; //!This option setter specifies that the container //!must use the specified base hook template<class BaseHook, template <class> class NodeTraits> struct any_to_some_hook { typedef typename BaseHook::template pack<empty>::proto_value_traits old_proto_value_traits; template<class Base> struct pack : public Base { struct proto_value_traits : public old_proto_value_traits { static const bool is_any_hook = true; typedef typename detail::eval_if_c < detail::internal_base_hook_bool_is_true<old_proto_value_traits>::value , any_to_get_base_pointer_type<old_proto_value_traits> , any_to_get_member_pointer_type<old_proto_value_traits> >::type void_pointer; typedef NodeTraits<void_pointer> node_traits; }; }; }; } //namespace detail{ /// @endcond //!This option setter specifies that //!any hook should behave as an slist hook template<class BaseHook> struct any_to_slist_hook /// @cond : public detail::any_to_some_hook<BaseHook, any_slist_node_traits> /// @endcond {}; //!This option setter specifies that //!any hook should behave as an list hook template<class BaseHook> struct any_to_list_hook /// @cond : public detail::any_to_some_hook<BaseHook, any_list_node_traits> /// @endcond {}; //!This option setter specifies that //!any hook should behave as a set hook template<class BaseHook> struct any_to_set_hook /// @cond : public detail::any_to_some_hook<BaseHook, any_rbtree_node_traits> /// @endcond {}; //!This option setter specifies that //!any hook should behave as an avl_set hook template<class BaseHook> struct any_to_avl_set_hook /// @cond : public detail::any_to_some_hook<BaseHook, any_avltree_node_traits> /// @endcond {}; //!This option setter specifies that any //!hook should behave as a bs_set hook template<class BaseHook> struct any_to_bs_set_hook /// @cond : public detail::any_to_some_hook<BaseHook, any_tree_node_traits> /// @endcond {}; //!This option setter specifies that any hook //!should behave as an unordered set hook template<class BaseHook> struct any_to_unordered_set_hook /// @cond : public detail::any_to_some_hook<BaseHook, any_unordered_node_traits> /// @endcond {}; } //namespace intrusive } //namespace boost #include <boost/intrusive/detail/config_end.hpp> #endif //BOOST_INTRUSIVE_ANY_HOOK_HPP