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_auto_ptr.h
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1/*
2 * Copyright (c) 1997-1999
3 * Silicon Graphics Computer Systems, Inc.
4 *
5 * Copyright (c) 1999
6 * Boris Fomitchev
7 *
8 * This material is provided "as is", with absolutely no warranty expressed
9 * or implied. Any use is at your own risk.
10 *
11 * Permission to use or copy this software for any purpose is hereby granted
12 * without fee, provided the above notices are retained on all copies.
13 * Permission to modify the code and to distribute modified code is granted,
14 * provided the above notices are retained, and a notice that the code was
15 * modified is included with the above copyright notice.
16 *
17 */
18
19#ifndef _STLP_AUTO_PTR_H
20#define _STLP_AUTO_PTR_H
21
23// implementation primitive
25public:
26 void* _M_p;
27 void __set(const volatile void* p) { _M_p = __CONST_CAST(void*,p); }
28 void __set(void* p) { _M_p = p; }
29};
30
31template <class _Tp>
33public:
35 _Tp* const _M_p;
36
37 auto_ptr_ref(__ptr_base& __r, _Tp* __p) : _M_r(__r), _M_p(__p) { }
38
39 _Tp* release() const { _M_r.__set(__STATIC_CAST(void*, 0)); return _M_p; }
40
41private:
42 //explicitely defined as private to avoid warnings:
45};
46
47template<class _Tp>
48class auto_ptr : public __ptr_base {
49public:
50 typedef _Tp element_type;
52
54 _Tp* __px = this->get();
55 this->_M_p = 0;
56 return __px;
57 }
58
59 void reset(_Tp* __px = 0) _STLP_NOTHROW {
60 _Tp* __pt = this->get();
61 if (__px != __pt)
62 delete __pt;
63 this->__set(__px);
64 }
65
67#if !defined (__GNUC__) || (__GNUC__ > 2)
68 { return __STATIC_CAST(_Tp*, _M_p); }
69#else
70 { return __REINTERPRET_CAST(_Tp*, _M_p); }
71#endif
72
73#if !defined (_STLP_NO_ARROW_OPERATOR)
75 _STLP_VERBOSE_ASSERT(get() != 0, _StlMsg_AUTO_PTR_NULL)
76 return get();
77 }
78#endif
80 _STLP_VERBOSE_ASSERT(get() != 0, _StlMsg_AUTO_PTR_NULL)
81 return *get();
82 }
83
84 explicit auto_ptr(_Tp* __px = 0) _STLP_NOTHROW { this->__set(__px); }
85
86#if defined (_STLP_MEMBER_TEMPLATES)
87# if !defined (_STLP_NO_TEMPLATE_CONVERSIONS)
88 template<class _Tp1> auto_ptr(auto_ptr<_Tp1>& __r) _STLP_NOTHROW {
89 _Tp* __conversionCheck = __r.release();
90 this->__set(__conversionCheck);
91 }
92# endif
93 template<class _Tp1> auto_ptr<_Tp>& operator=(auto_ptr<_Tp1>& __r) _STLP_NOTHROW {
94 _Tp* __conversionCheck = __r.release();
95 reset(__conversionCheck);
96 return *this;
97 }
98#endif
99
100 auto_ptr(_Self& __r) _STLP_NOTHROW { this->__set(__r.release()); }
101
103 reset(__r.release());
104 return *this;
105 }
106
107 ~auto_ptr() _STLP_NOTHROW { /* boris : reset(0) might be better */ delete this->get(); }
108
110 { this->__set(__r.release()); }
111
113 reset(__r.release());
114 return *this;
115 }
116
117#if defined(_STLP_MEMBER_TEMPLATES) && !defined(_STLP_NO_TEMPLATE_CONVERSIONS)
118 template<class _Tp1> operator auto_ptr_ref<_Tp1>() _STLP_NOTHROW
119 { return auto_ptr_ref<_Tp1>(*this, this->get()); }
120 template<class _Tp1> operator auto_ptr<_Tp1>() _STLP_NOTHROW
121 { return auto_ptr<_Tp1>(release()); }
122#else
124 { return auto_ptr_ref<_Tp>(*this, this->get()); }
125#endif
126};
128
129#endif /* _STLP_AUTO_PTR_H */
130
131// Local Variables:
132// mode:C++
133// End:
#define _STLP_VERBOSE_ASSERT(expr, diagnostic)
Definition: _debug.h:439
#define _STLP_NOTHROW
Definition: _intel.h:35
void __set(void *p)
Definition: _auto_ptr.h:28
void * _M_p
Definition: _auto_ptr.h:26
void __set(const volatile void *p)
Definition: _auto_ptr.h:27
__ptr_base & _M_r
Definition: _auto_ptr.h:34
auto_ptr_ref(__ptr_base &__r, _Tp *__p)
Definition: _auto_ptr.h:37
_Tp *const _M_p
Definition: _auto_ptr.h:35
auto_ptr_ref< _Tp > _Self
Definition: _auto_ptr.h:43
_Tp * release() const
Definition: _auto_ptr.h:39
_Self & operator=(_Self const &)
_Self & operator=(_Self &__r) _STLP_NOTHROW
Definition: _auto_ptr.h:102
auto_ptr< _Tp > _Self
Definition: _auto_ptr.h:51
_Tp * operator->() const _STLP_NOTHROW
Definition: _auto_ptr.h:74
auto_ptr(_Tp *__px=0) _STLP_NOTHROW
Definition: _auto_ptr.h:84
auto_ptr(_Self &__r) _STLP_NOTHROW
Definition: _auto_ptr.h:100
_Tp element_type
Definition: _auto_ptr.h:50
void reset(_Tp *__px=0) _STLP_NOTHROW
Definition: _auto_ptr.h:59
auto_ptr(auto_ptr_ref< _Tp > __r) _STLP_NOTHROW
Definition: _auto_ptr.h:109
_Tp * get() const _STLP_NOTHROW
Definition: _auto_ptr.h:66
_Tp & operator*() const _STLP_NOTHROW
Definition: _auto_ptr.h:79
_Self & operator=(auto_ptr_ref< _Tp > __r) _STLP_NOTHROW
Definition: _auto_ptr.h:112
~auto_ptr() _STLP_NOTHROW
Definition: _auto_ptr.h:107
_Tp * release() _STLP_NOTHROW
Definition: _auto_ptr.h:53
#define __REINTERPRET_CAST(__x, __y)
Definition: features.h:586
#define __STATIC_CAST(__x, __y)
Definition: features.h:585
#define __CONST_CAST(__x, __y)
Definition: features.h:584
#define _STLP_BEGIN_NAMESPACE
Definition: features.h:501
#define _STLP_END_NAMESPACE
Definition: features.h:503
GLboolean reset
Definition: glext.h:5666
GLfloat GLfloat p
Definition: glext.h:8902
#define const
Definition: zconf.h:233