mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-04-26 17:03:43 +02:00
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
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* Copyright (c)2013-2020 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2024-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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/****/
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#ifndef ZT_SCOPEDPTR_HPP
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#define ZT_SCOPEDPTR_HPP
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#include "Constants.hpp"
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#include "TriviallyCopyable.hpp"
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namespace ZeroTier {
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/**
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* Simple scoped pointer
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*
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* This is used in the core to avoid requiring C++11 and because auto_ptr is weird.
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*/
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template<typename T>
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class ScopedPtr : public TriviallyCopyable
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{
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public:
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explicit ZT_INLINE ScopedPtr(T *const p) noexcept : _p(p) {}
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ZT_INLINE ~ScopedPtr() { delete _p; }
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ZT_INLINE T *operator->() const noexcept { return _p; }
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ZT_INLINE T &operator*() const noexcept { return *_p; }
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explicit ZT_INLINE operator bool() const noexcept { return (_p != (T *)0); }
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ZT_INLINE T *ptr() const noexcept { return _p; }
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ZT_INLINE void swap(const ScopedPtr &p) noexcept
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{
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T *const tmp = _p;
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_p = p._p;
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p._p = tmp;
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}
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ZT_INLINE bool operator==(const ScopedPtr &p) const noexcept { return (_p == p._p); }
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ZT_INLINE bool operator!=(const ScopedPtr &p) const noexcept { return (_p != p._p); }
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ZT_INLINE bool operator==(T *const p) const noexcept { return (_p == p); }
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ZT_INLINE bool operator!=(T *const p) const noexcept { return (_p != p); }
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private:
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ZT_INLINE ScopedPtr() noexcept {}
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ZT_INLINE ScopedPtr(const ScopedPtr &p) noexcept : _p(nullptr) {}
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ZT_INLINE ScopedPtr &operator=(const ScopedPtr &p) noexcept { return *this; }
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T *const _p;
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};
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} // namespace ZeroTier
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namespace std {
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template<typename T>
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ZT_INLINE void swap(ZeroTier::ScopedPtr<T> &a,ZeroTier::ScopedPtr<T> &b) noexcept { a.swap(b); }
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}
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#endif
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