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|---|
| /* |
| * 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 _CPP_MEMORY |
| #define _CPP_MEMORY 1 |
| |
| #pragma GCC system_header |
| |
| #include <bits/stl_algobase.h> |
| #include <bits/stl_alloc.h> |
| #include <bits/stl_construct.h> |
| #include <bits/stl_iterator_base_types.h> //for iterator_traits |
| #include <bits/stl_tempbuf.h> |
| #include <bits/stl_uninitialized.h> |
| #include <bits/stl_raw_storage_iter.h> |
| |
| namespace std |
| { |
| |
| template<class _Tp1> struct auto_ptr_ref { |
| _Tp1* _M_ptr; |
| auto_ptr_ref(_Tp1* __p) : _M_ptr(__p) {} |
| }; |
| |
| 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()) {} |
| |
| template <class _Tp1> auto_ptr(auto_ptr<_Tp1>& __a) __STL_NOTHROW |
| : _M_ptr(__a.release()) {} |
| |
| auto_ptr& operator=(auto_ptr& __a) __STL_NOTHROW { |
| reset(__a.release()); |
| return *this; |
| } |
| |
| template <class _Tp1> |
| auto_ptr& operator=(auto_ptr<_Tp1>& __a) __STL_NOTHROW { |
| reset(__a.release()); |
| return *this; |
| } |
| |
| // 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. |
| 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<_Tp>(this->release()); } |
| template <class _Tp1> operator auto_ptr<_Tp1>() __STL_NOTHROW |
| { return auto_ptr<_Tp1>(this->release()); } |
| }; |
| |
| } // namespace std |
| |
| #endif /* _CPP_MEMORY */ |
| |
| |
| // Local Variables: |
| // mode:C++ |
| // End: |