зеркало из https://github.com/mozilla/gecko-dev.git
Bug 916632 (insanity::pkix::ScopedPtr), Part 1: Add insanity::pkix::ScopedPtr, r=cviecco
--HG-- extra : rebase_source : 57180ed742a0ae16ea662ce2fdf1f79bad0f8dda extra : source : e92633f954bcff92b47621337b3c8d8ad83ac543
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* Copyright 2013 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef insanity_pkix__ScopedPtr_h
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#define insanity_pkix__ScopedPtr_h
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namespace insanity { namespace pkix {
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// Similar to boost::scoped_ptr and std::unique_ptr. Does not support copying
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// or assignment.
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template <typename T, void (*Destroyer)(T*)>
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class ScopedPtr
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{
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public:
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explicit ScopedPtr(T* value = nullptr) : mValue(value) { }
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~ScopedPtr()
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{
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if (mValue) {
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Destroyer(mValue);
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}
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}
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void operator=(T* newValue)
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{
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if (mValue) {
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Destroyer(mValue);
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}
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mValue = newValue;
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}
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T& operator*() const { return *mValue; }
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T* operator->() const { return mValue; }
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operator bool() const { return mValue; }
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T* get() const { return mValue; }
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T* release()
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{
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T* result = mValue;
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mValue = nullptr;
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return result;
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}
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void reset() { *this = nullptr; }
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protected:
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T* mValue;
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ScopedPtr(const ScopedPtr&) /* = delete */;
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void operator=(const ScopedPtr&) /* = delete */;
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};
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} } // namespace insanity::pkix
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#endif // insanity_pkix__ScopedPtr_h
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