The Tor Browser / file comparison
comparison: ipc/chromium/src/base/scoped_nsobject.h
ipc/chromium/src/base/scoped_nsobject.h
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:88f479aa0fec |
|---|---|
| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_SCOPED_NSOBJECT_H_ | |
| 6 #define BASE_SCOPED_NSOBJECT_H_ | |
| 7 | |
| 8 #import <Foundation/Foundation.h> | |
| 9 #include "base/basictypes.h" | |
| 10 | |
| 11 // scoped_nsobject<> is patterned after scoped_ptr<>, but maintains ownership | |
| 12 // of an NSObject subclass object. Style deviations here are solely for | |
| 13 // compatibility with scoped_ptr<>'s interface, with which everyone is already | |
| 14 // familiar. | |
| 15 // | |
| 16 // When scoped_nsobject<> takes ownership of an object (in the constructor or | |
| 17 // in reset()), it takes over the caller's existing ownership claim. The | |
| 18 // caller must own the object it gives to scoped_nsobject<>, and relinquishes | |
| 19 // an ownership claim to that object. scoped_nsobject<> does not call | |
| 20 // -retain. | |
| 21 template<typename NST> | |
| 22 class scoped_nsobject { | |
| 23 public: | |
| 24 typedef NST* element_type; | |
| 25 | |
| 26 explicit scoped_nsobject(NST* object = nil) | |
| 27 : object_(object) { | |
| 28 } | |
| 29 | |
| 30 ~scoped_nsobject() { | |
| 31 [object_ release]; | |
| 32 } | |
| 33 | |
| 34 void reset(NST* object = nil) { | |
| 35 [object_ release]; | |
| 36 object_ = object; | |
| 37 } | |
| 38 | |
| 39 bool operator==(NST* that) const { | |
| 40 return object_ == that; | |
| 41 } | |
| 42 | |
| 43 bool operator!=(NST* that) const { | |
| 44 return object_ != that; | |
| 45 } | |
| 46 | |
| 47 operator NST*() const { | |
| 48 return object_; | |
| 49 } | |
| 50 | |
| 51 NST* get() const { | |
| 52 return object_; | |
| 53 } | |
| 54 | |
| 55 void swap(scoped_nsobject& that) { | |
| 56 NST* temp = that.object_; | |
| 57 that.object_ = object_; | |
| 58 object_ = temp; | |
| 59 } | |
| 60 | |
| 61 // scoped_nsobject<>::release() is like scoped_ptr<>::release. It is NOT | |
| 62 // a wrapper for [object_ release]. To force a scoped_nsobject<> object to | |
| 63 // call [object_ release], use scoped_nsobject<>::reset(). | |
| 64 NST* release() { | |
| 65 NST* temp = object_; | |
| 66 object_ = nil; | |
| 67 return temp; | |
| 68 } | |
| 69 | |
| 70 private: | |
| 71 NST* object_; | |
| 72 | |
| 73 DISALLOW_COPY_AND_ASSIGN(scoped_nsobject); | |
| 74 }; | |
| 75 | |
| 76 #endif // BASE_SCOPED_NSOBJECT_H_ |
