memory
资源名称:STL_doc.rar [点击查看]
上传用户:nizebo
上传日期:2022-05-14
资源大小:882k
文件大小:3k
源码类别:
STL
开发平台:
Visual C++
- /*
- * Copyright (c) 1997-1999
- * Silicon Graphics Computer Systems, Inc.
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. Silicon Graphics makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- */
- #ifndef __SGI_STL_MEMORY
- #define __SGI_STL_MEMORY
- #include <stl_algobase.h>
- #include <stl_alloc.h>
- #include <stl_construct.h>
- #include <stl_tempbuf.h>
- #include <stl_uninitialized.h>
- #include <stl_raw_storage_iter.h>
- __STL_BEGIN_NAMESPACE
- #if defined(__SGI_STL_USE_AUTO_PTR_CONVERSIONS) &&
- defined(__STL_MEMBER_TEMPLATES)
- template<class _Tp1> struct auto_ptr_ref {
- _Tp1* _M_ptr;
- auto_ptr_ref(_Tp1* __p) : _M_ptr(__p) {}
- };
- #endif
- template <class _Tp> class auto_ptr {
- private:
- _Tp* _M_ptr;
- public:
- typedef _Tp element_type;
- explicit auto_ptr(_Tp* __p = 0) __STL_NOTHROW : _M_ptr(__p) {}
- auto_ptr(auto_ptr& __a) __STL_NOTHROW : _M_ptr(__a.release()) {}
- #ifdef __STL_MEMBER_TEMPLATES
- template <class _Tp1> auto_ptr(auto_ptr<_Tp1>& __a) __STL_NOTHROW
- : _M_ptr(__a.release()) {}
- #endif /* __STL_MEMBER_TEMPLATES */
- auto_ptr& operator=(auto_ptr& __a) __STL_NOTHROW {
- if (&__a != this) {
- delete _M_ptr;
- _M_ptr = __a.release();
- }
- return *this;
- }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class _Tp1>
- auto_ptr& operator=(auto_ptr<_Tp1>& __a) __STL_NOTHROW {
- if (__a.get() != this->get()) {
- delete _M_ptr;
- _M_ptr = __a.release();
- }
- return *this;
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- // Note: The C++ standard says there is supposed to be an empty throw
- // specification here, but omitting it is standard conforming. Its
- // presence can be detected only if _Tp::~_Tp() throws, but (17.4.3.6/2)
- // this is prohibited.
- ~auto_ptr() { delete _M_ptr; }
- _Tp& operator*() const __STL_NOTHROW {
- return *_M_ptr;
- }
- _Tp* operator->() const __STL_NOTHROW {
- return _M_ptr;
- }
- _Tp* get() const __STL_NOTHROW {
- return _M_ptr;
- }
- _Tp* release() __STL_NOTHROW {
- _Tp* __tmp = _M_ptr;
- _M_ptr = 0;
- return __tmp;
- }
- void reset(_Tp* __p = 0) __STL_NOTHROW {
- if (__p != _M_ptr) {
- delete _M_ptr;
- _M_ptr = __p;
- }
- }
- // According to the C++ standard, these conversions are required. Most
- // present-day compilers, however, do not enforce that requirement---and,
- // in fact, most present-day compilers do not support the language
- // features that these conversions rely on.
- #if defined(__SGI_STL_USE_AUTO_PTR_CONVERSIONS) &&
- defined(__STL_MEMBER_TEMPLATES)
- public:
- auto_ptr(auto_ptr_ref<_Tp> __ref) __STL_NOTHROW
- : _M_ptr(__ref._M_ptr) {}
- auto_ptr& operator=(auto_ptr_ref<_Tp> __ref) __STL_NOTHROW {
- if (__ref._M_ptr != this->get()) {
- delete _M_ptr;
- _M_ptr = __ref._M_ptr;
- }
- return *this;
- }
- template <class _Tp1> operator auto_ptr_ref<_Tp1>() __STL_NOTHROW
- { return auto_ptr_ref<_Tp1>(this->release()); }
- template <class _Tp1> operator auto_ptr<_Tp1>() __STL_NOTHROW
- { return auto_ptr<_Tp1>(this->release()); }
- #endif /* auto ptr conversions && member templates */
- };
- __STL_END_NAMESPACE
- #endif /* __SGI_STL_MEMORY */
- // Local Variables:
- // mode:C++
- // End: