mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-30 21:36:03 +08:00
4f647814ce
2000-07-03 Benjamin Kosnik <bkoz@purist.soma.redhat.com> * bits/std_memory.h: Revert. From-SVN: r34858
129 lines
3.4 KiB
C++
129 lines
3.4 KiB
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 _CPP_MEMORY
|
|
#define _CPP_MEMORY 1
|
|
|
|
#include <bits/stl_algobase.h>
|
|
#include <bits/stl_alloc.h>
|
|
#include <bits/stl_construct.h>
|
|
#include <bits/stl_iterator_base.h> //for iterator_traits
|
|
#include <bits/stl_tempbuf.h>
|
|
#include <bits/stl_uninitialized.h>
|
|
#include <bits/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 {
|
|
reset(__a.release());
|
|
return *this;
|
|
}
|
|
|
|
#ifdef __STL_MEMBER_TEMPLATES
|
|
template <class _Tp1>
|
|
auto_ptr& operator=(auto_ptr<_Tp1>& __a) __STL_NOTHROW {
|
|
reset(__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<_Tp>(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 /* _CPP_MEMORY */
|
|
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|