1 // Copyright (c) 2013 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 SCOPED_REFPTR_H_ 6 #define SCOPED_REFPTR_H_ 7 8 // Stub scoped_refptr<T> class that supports an implicit cast to T*. 9 template <class T> 10 class scoped_refptr { 11 public: 12 typedef T element_type; 13 scoped_refptr() : ptr_(0) {} 14 scoped_refptr(T* p) : ptr_(p) {} 15 scoped_refptr(const scoped_refptr<T>& r) : ptr_(r.ptr_) {} 16 17 template <typename U> 18 scoped_refptr(const scoped_refptr<U>& r) 19 : ptr_(r.get()) {} 20 21 ~scoped_refptr() {} 22 23 T* get() const { return ptr_; } 24 operator T*() const { return ptr_; } 25 T* operator->() const { return ptr_; } 26 27 scoped_refptr<T>& operator=(T* p) { 28 ptr_ = p; 29 return *this; 30 } 31 scoped_refptr<T>& operator=(const scoped_refptr<T>& r) { 32 return *this = r.ptr_; 33 } 34 template <typename U> 35 scoped_refptr<T>& operator=(const scoped_refptr<U>& r) { 36 return *this = r.get(); 37 } 38 39 protected: 40 T* ptr_; 41 }; 42 43 #endif // SCOPED_REFPTR_H_ 44
