121 lines
4.1 KiB
C++
121 lines
4.1 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file weakPointerToBase.h
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* @author drose
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* @date 2004-09-27
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*/
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#ifndef WEAKPOINTERTOBASE_H
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#define WEAKPOINTERTOBASE_H
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#include "pandabase.h"
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#include "pointerToBase.h"
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#include "weakPointerToVoid.h"
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/**
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* This is the base class for PointerTo and ConstPointerTo. Don't try to use
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* it directly; use either derived class instead.
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*/
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template <class T>
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class WeakPointerToBase : public WeakPointerToVoid {
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public:
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typedef T To;
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protected:
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constexpr WeakPointerToBase() noexcept = default;
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INLINE explicit WeakPointerToBase(To *ptr);
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INLINE WeakPointerToBase(const PointerToBase<T> ©);
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INLINE WeakPointerToBase(const WeakPointerToBase<T> ©);
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INLINE WeakPointerToBase(WeakPointerToBase<T> &&from) noexcept;
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template<class Y>
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INLINE WeakPointerToBase(const WeakPointerToBase<Y> &r);
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template<class Y>
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INLINE WeakPointerToBase(WeakPointerToBase<Y> &&r) noexcept;
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INLINE ~WeakPointerToBase();
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void reassign(To *ptr);
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INLINE void reassign(const PointerToBase<To> ©);
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INLINE void reassign(const WeakPointerToBase<To> ©);
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INLINE void reassign(WeakPointerToBase<To> &&from) noexcept;
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template<class Y>
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INLINE void reassign(const WeakPointerToBase<Y> ©);
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template<class Y>
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INLINE void reassign(WeakPointerToBase<Y> &&from) noexcept;
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INLINE void update_type(To *ptr);
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INLINE void lock_into(PointerToBase<To> &locked) const;
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// No assignment or retrieval functions are declared in WeakPointerToBase,
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// because we will have to specialize on const vs. non-const later.
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public:
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// These comparison functions are common to all things PointerTo, so they're
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// defined up here.
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#ifndef CPPPARSER
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INLINE bool operator == (const To *other) const;
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INLINE bool operator != (const To *other) const;
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INLINE bool operator > (const To *other) const;
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INLINE bool operator <= (const To *other) const;
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INLINE bool operator >= (const To *other) const;
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INLINE bool operator == (To *other) const;
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INLINE bool operator != (To *other) const;
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INLINE bool operator > (To *other) const;
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INLINE bool operator <= (To *other) const;
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INLINE bool operator >= (To *other) const;
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INLINE bool operator == (std::nullptr_t) const;
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INLINE bool operator != (std::nullptr_t) const;
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INLINE bool operator > (std::nullptr_t) const;
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INLINE bool operator <= (std::nullptr_t) const;
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INLINE bool operator >= (std::nullptr_t) const;
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INLINE bool operator == (const WeakPointerToBase<To> &other) const;
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INLINE bool operator != (const WeakPointerToBase<To> &other) const;
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INLINE bool operator > (const WeakPointerToBase<To> &other) const;
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INLINE bool operator <= (const WeakPointerToBase<To> &other) const;
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INLINE bool operator >= (const WeakPointerToBase<To> &other) const;
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INLINE bool operator == (const PointerToBase<To> &other) const;
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INLINE bool operator != (const PointerToBase<To> &other) const;
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INLINE bool operator > (const PointerToBase<To> &other) const;
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INLINE bool operator <= (const PointerToBase<To> &other) const;
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INLINE bool operator >= (const PointerToBase<To> &other) const;
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INLINE bool operator < (const To *other) const;
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INLINE bool operator < (std::nullptr_t) const;
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INLINE bool operator < (const WeakPointerToBase<To> &other) const;
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INLINE bool operator < (const PointerToBase<To> &other) const;
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#endif // CPPPARSER
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template<class Y>
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INLINE bool owner_before(const WeakPointerToBase<Y> &other) const noexcept;
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template<class Y>
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INLINE bool owner_before(const PointerToBase<Y> &other) const noexcept;
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// This is needed to be able to access the privates of other instantiations.
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template<typename Y> friend class WeakPointerToBase;
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PUBLISHED:
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INLINE void clear();
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INLINE void refresh() const;
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void output(std::ostream &out) const;
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};
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template<class T>
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INLINE std::ostream &operator <<(std::ostream &out, const WeakPointerToBase<T> &pointer) {
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pointer.output(out);
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return out;
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}
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#include "weakPointerToBase.I"
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#endif
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