os_smart_ptr.h source code [clang_source_code/test/Analysis/os_smart

1	#ifndef _OS_SMART_POINTER_H
2	#define _OS_SMART_POINTER_H
3
4	#include "os_object_base.h"
5
6	namespace os {
7
8	template<class T>
9	struct smart_ptr {
10	smart_ptr() : pointer(nullptr) {}
11
12	explicit smart_ptr(T *&p) : pointer(p) {
13	if (pointer) {
14	_retain(pointer);
15	}
16	}
17
18	smart_ptr(smart_ptr const &rhs) : pointer(rhs.pointer) {
19	if (pointer) {
20	_retain(pointer);
21	}
22	}
23
24	smart_ptr & operator=(T *&rhs) {
25	smart_ptr(rhs).swap(*this);
26	return *this;
27	}
28
29	smart_ptr & operator=(smart_ptr &rhs) {
30	smart_ptr(rhs).swap(*this);
31	return *this;
32	}
33
34	~smart_ptr() {
35	if (pointer) {
36	_release(pointer);
37	}
38	}
39
40	void reset() {
41	smart_ptr().swap(*this);
42	}
43
44	T *get() const {
45	return pointer;
46	}
47
48	T ** get_for_out_param() {
49	reset();
50	return &pointer;
51	}
52
53	T * operator->() const {
54	return pointer;
55	}
56
57	explicit
58	operator bool() const {
59	return pointer != nullptr;
60	}
61
62	inline void
63	swap(smart_ptr &p) {
64	T *temp = pointer;
65	pointer = p.pointer;
66	p.pointer = temp;
67	}
68
69	static inline void
70	_retain(T *obj) {
71	obj->retain();
72	}
73
74	static inline void
75	_release(T *obj) {
76	obj->release();
77	}
78
79	static inline T *
80	_alloc() {
81	return new T;
82	}
83
84	T *pointer;
85	};
86	} // namespace os
87
88	#endif /* _OS_SMART_POINTER_H */
89

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