| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // scoped_nsobject supports RAII for Objective-C objects. |
| // The idea and code of scoped_nsobject originally comes from |
| // chromium base/scoped_nsobject.h. |
| // See http://src.chromium.org/viewvc/chrome/trunk/src/base/scoped_nsobject.h?revision=29399 |
| |
| #ifndef MOZC_BASE_SCOPED_NSOBJECT_H_ |
| #define MOZC_BASE_SCOPED_NSOBJECT_H_ |
| |
| #import <Foundation/Foundation.h> |
| |
| #include "base/port.h" |
| |
| template<typename NST> |
| class scoped_nsobject { |
| public: |
| typedef NST* element_type; |
| |
| explicit scoped_nsobject(NST* object = nil) |
| : object_(object) { |
| } |
| |
| ~scoped_nsobject() { |
| [object_ release]; |
| } |
| |
| void reset(NST* object = nil) { |
| // We intentionally do not check that object != object_ as the caller must |
| // already have an ownership claim over whatever it gives to scoped_nsobject |
| // and scoped_cftyperef, whether it's in the constructor or in a call to |
| // reset(). In either case, it relinquishes that claim and the scoper |
| // assumes it. |
| [object_ release]; |
| object_ = object; |
| } |
| |
| bool operator==(NST* that) const { |
| return object_ == that; |
| } |
| |
| bool operator!=(NST* that) const { |
| return object_ != that; |
| } |
| |
| operator NST*() const { |
| return object_; |
| } |
| |
| NST* get() const { |
| return object_; |
| } |
| |
| void swap(scoped_nsobject& that) { |
| NST* temp = that.object_; |
| that.object_ = object_; |
| object_ = temp; |
| } |
| |
| // scoped_nsobject<>::release() is like scoped_ptr<>::release. It is NOT |
| // a wrapper for [object_ release]. To force a scoped_nsobject<> object to |
| // call [object_ release], use scoped_nsobject<>::reset(). |
| NST* release() { |
| NST* temp = object_; |
| object_ = nil; |
| return temp; |
| } |
| |
| private: |
| NST* object_; |
| |
| DISALLOW_COPY_AND_ASSIGN(scoped_nsobject); |
| }; |
| |
| |
| #endif // MOZC_BASE_SCOPED_NSOBJECT_H_ |