0,0 → 1,116 |
/* |
* 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. |
* |
*/ |
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#ifndef _CPP_MEMORY |
#define _CPP_MEMORY 1 |
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#pragma GCC system_header |
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#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> |
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namespace std |
{ |
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template<class _Tp1> struct auto_ptr_ref { |
_Tp1* _M_ptr; |
auto_ptr_ref(_Tp1* __p) : _M_ptr(__p) {} |
}; |
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template <class _Tp> class auto_ptr { |
private: |
_Tp* _M_ptr; |
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public: |
typedef _Tp element_type; |
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explicit auto_ptr(_Tp* __p = 0) __STL_NOTHROW : _M_ptr(__p) {} |
auto_ptr(auto_ptr& __a) __STL_NOTHROW : _M_ptr(__a.release()) {} |
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template <class _Tp1> auto_ptr(auto_ptr<_Tp1>& __a) __STL_NOTHROW |
: _M_ptr(__a.release()) {} |
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auto_ptr& operator=(auto_ptr& __a) __STL_NOTHROW { |
reset(__a.release()); |
return *this; |
} |
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template <class _Tp1> |
auto_ptr& operator=(auto_ptr<_Tp1>& __a) __STL_NOTHROW { |
reset(__a.release()); |
return *this; |
} |
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// 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; } |
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_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; |
} |
} |
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// 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) {} |
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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; |
} |
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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()); } |
}; |
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} // namespace std |
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#endif /* _CPP_MEMORY */ |
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// Local Variables: |
// mode:C++ |
// End: |