339 lines
11 KiB
C++
339 lines
11 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2006-2013
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/intrusive for documentation.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTRUSIVE_ANY_HOOK_HPP
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#define BOOST_INTRUSIVE_ANY_HOOK_HPP
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#include <boost/intrusive/detail/config_begin.hpp>
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#include <boost/intrusive/intrusive_fwd.hpp>
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#include <boost/intrusive/detail/any_node_and_algorithms.hpp>
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#include <boost/intrusive/options.hpp>
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#include <boost/intrusive/detail/generic_hook.hpp>
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#include <boost/intrusive/detail/mpl.hpp>
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#include <boost/intrusive/pointer_rebind.hpp>
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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namespace boost {
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namespace intrusive {
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//! Helper metafunction to define a \c \c any_base_hook that yields to the same
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//! type when the same options (either explicitly or implicitly) are used.
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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template<class ...Options>
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#else
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template<class O1 = void, class O2 = void, class O3 = void>
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#endif
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struct make_any_base_hook
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{
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/// @cond
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typedef typename pack_options
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< hook_defaults,
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#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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O1, O2, O3
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#else
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Options...
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#endif
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>::type packed_options;
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typedef generic_hook
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< AnyAlgorithm
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, any_node_traits<typename packed_options::void_pointer>
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, typename packed_options::tag
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, packed_options::link_mode
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, AnyBaseHookId
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> implementation_defined;
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/// @endcond
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typedef implementation_defined type;
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};
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//! Derive a class from this hook in order to store objects of that class
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//! in an intrusive container.
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//!
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//! The hook admits the following options: \c tag<>, \c void_pointer<> and
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//! \c link_mode<>.
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//!
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//! \c tag<> defines a tag to identify the node.
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//! The same tag value can be used in different classes, but if a class is
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//! derived from more than one \c any_base_hook, then each \c any_base_hook needs its
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//! unique tag.
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//!
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//! \c link_mode<> will specify the linking mode of the hook (\c normal_link, \c safe_link).
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//!
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//! \c void_pointer<> is the pointer type that will be used internally in the hook
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//! and the container configured to use this hook.
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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template<class ...Options>
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#else
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template<class O1, class O2, class O3>
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#endif
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class any_base_hook
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: public make_any_base_hook
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#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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<O1, O2, O3>
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#else
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<Options...>
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#endif
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::type
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{
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
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public:
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//! <b>Effects</b>: If link_mode is or \c safe_link
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//! initializes the node to an unlinked state.
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//!
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//! <b>Throws</b>: Nothing.
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any_base_hook();
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//! <b>Effects</b>: If link_mode is or \c safe_link
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//! initializes the node to an unlinked state. The argument is ignored.
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//!
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//! <b>Throws</b>: Nothing.
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//!
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//! <b>Rationale</b>: Providing a copy-constructor
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//! makes classes using the hook STL-compliant without forcing the
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//! user to do some additional work. \c swap can be used to emulate
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//! move-semantics.
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any_base_hook(const any_base_hook& );
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//! <b>Effects</b>: Empty function. The argument is ignored.
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//!
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//! <b>Throws</b>: Nothing.
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//!
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//! <b>Rationale</b>: Providing an assignment operator
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//! makes classes using the hook STL-compliant without forcing the
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//! user to do some additional work. \c swap can be used to emulate
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//! move-semantics.
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any_base_hook& operator=(const any_base_hook& );
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//! <b>Effects</b>: If link_mode is \c normal_link, the destructor does
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//! nothing (ie. no code is generated). If link_mode is \c safe_link and the
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//! object is stored in a container an assertion is raised.
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//!
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//! <b>Throws</b>: Nothing.
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~any_base_hook();
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//! <b>Precondition</b>: link_mode must be \c safe_link.
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//!
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//! <b>Returns</b>: true, if the node belongs to a container, false
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//! otherwise. This function can be used to test whether \c container::iterator_to
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//! will return a valid iterator.
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//!
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//! <b>Complexity</b>: Constant
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bool is_linked() const;
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#endif
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};
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//! Helper metafunction to define a \c \c any_member_hook that yields to the same
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//! type when the same options (either explicitly or implicitly) are used.
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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template<class ...Options>
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#else
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template<class O1 = void, class O2 = void, class O3 = void>
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#endif
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struct make_any_member_hook
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{
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/// @cond
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typedef typename pack_options
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< hook_defaults,
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#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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O1, O2, O3
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#else
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Options...
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#endif
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>::type packed_options;
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typedef generic_hook
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< AnyAlgorithm
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, any_node_traits<typename packed_options::void_pointer>
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, member_tag
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, packed_options::link_mode
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, NoBaseHookId
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> implementation_defined;
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/// @endcond
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typedef implementation_defined type;
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};
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//! Store this hook in a class to be inserted
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//! in an intrusive container.
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//!
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//! The hook admits the following options: \c void_pointer<> and
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//! \c link_mode<>.
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//!
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//! \c link_mode<> will specify the linking mode of the hook (\c normal_link or \c safe_link).
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//!
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//! \c void_pointer<> is the pointer type that will be used internally in the hook
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//! and the container configured to use this hook.
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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template<class ...Options>
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#else
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template<class O1, class O2, class O3>
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#endif
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class any_member_hook
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: public make_any_member_hook
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#if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
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<O1, O2, O3>
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#else
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<Options...>
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#endif
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::type
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{
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#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
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public:
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//! <b>Effects</b>: If link_mode is or \c safe_link
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//! initializes the node to an unlinked state.
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//!
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//! <b>Throws</b>: Nothing.
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any_member_hook();
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//! <b>Effects</b>: If link_mode is or \c safe_link
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//! initializes the node to an unlinked state. The argument is ignored.
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//!
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//! <b>Throws</b>: Nothing.
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//!
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//! <b>Rationale</b>: Providing a copy-constructor
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//! makes classes using the hook STL-compliant without forcing the
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//! user to do some additional work. \c swap can be used to emulate
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//! move-semantics.
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any_member_hook(const any_member_hook& );
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//! <b>Effects</b>: Empty function. The argument is ignored.
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//!
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//! <b>Throws</b>: Nothing.
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//!
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//! <b>Rationale</b>: Providing an assignment operator
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//! makes classes using the hook STL-compliant without forcing the
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//! user to do some additional work. \c swap can be used to emulate
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//! move-semantics.
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any_member_hook& operator=(const any_member_hook& );
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//! <b>Effects</b>: If link_mode is \c normal_link, the destructor does
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//! nothing (ie. no code is generated). If link_mode is \c safe_link and the
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//! object is stored in a container an assertion is raised.
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//!
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//! <b>Throws</b>: Nothing.
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~any_member_hook();
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//! <b>Precondition</b>: link_mode must be \c safe_link.
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//!
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//! <b>Returns</b>: true, if the node belongs to a container, false
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//! otherwise. This function can be used to test whether \c container::iterator_to
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//! will return a valid iterator.
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//!
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//! <b>Complexity</b>: Constant
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bool is_linked() const;
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#endif
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};
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/// @cond
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namespace detail{
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BOOST_INTRUSIVE_INTERNAL_STATIC_BOOL_IS_TRUE(old_proto_value_traits_base_hook, hooktags::is_base_hook)
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//!This option setter specifies that the container
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//!must use the specified base hook
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template<class BasicHook, template <class> class NodeTraits>
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struct any_to_some_hook
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{
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typedef typename BasicHook::template pack<empty>::proto_value_traits old_proto_value_traits;
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template<class Base>
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struct pack : public Base
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{
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struct proto_value_traits
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{
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//proto_value_traits::hooktags::is_base_hook is used by get_value_traits
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//to detect base hooks, so mark it in case BasicHook has it.
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struct hooktags
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{
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static const bool is_base_hook = old_proto_value_traits_base_hook_bool_is_true
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<old_proto_value_traits>::value;
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};
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typedef old_proto_value_traits basic_hook_t;
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static const bool is_any_hook = true;
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template<class VoidPtr>
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struct node_traits_from_voidptr
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{ typedef NodeTraits<VoidPtr> type; };
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};
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};
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};
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} //namespace detail{
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/// @endcond
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//!This option setter specifies that
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//!any hook should behave as an slist hook
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template<class BasicHook>
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struct any_to_slist_hook
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/// @cond
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: public detail::any_to_some_hook<BasicHook, any_slist_node_traits>
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/// @endcond
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{};
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//!This option setter specifies that
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//!any hook should behave as an list hook
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template<class BasicHook>
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struct any_to_list_hook
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/// @cond
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: public detail::any_to_some_hook<BasicHook, any_list_node_traits>
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/// @endcond
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{};
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//!This option setter specifies that
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//!any hook should behave as a set hook
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template<class BasicHook>
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struct any_to_set_hook
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/// @cond
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: public detail::any_to_some_hook<BasicHook, any_rbtree_node_traits>
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/// @endcond
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{};
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//!This option setter specifies that
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//!any hook should behave as an avl_set hook
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template<class BasicHook>
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struct any_to_avl_set_hook
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/// @cond
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: public detail::any_to_some_hook<BasicHook, any_avltree_node_traits>
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/// @endcond
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{};
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//!This option setter specifies that any
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//!hook should behave as a bs_set hook
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template<class BasicHook>
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struct any_to_bs_set_hook
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/// @cond
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: public detail::any_to_some_hook<BasicHook, any_tree_node_traits>
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/// @endcond
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{};
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//!This option setter specifies that any hook
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//!should behave as an unordered set hook
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template<class BasicHook>
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struct any_to_unordered_set_hook
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/// @cond
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: public detail::any_to_some_hook<BasicHook, any_unordered_node_traits>
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/// @endcond
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{};
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} //namespace intrusive
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} //namespace boost
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#include <boost/intrusive/detail/config_end.hpp>
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#endif //BOOST_INTRUSIVE_ANY_HOOK_HPP
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