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5d8dd5d148
- move headers to include directory - delete some incidentally committed things svn path=/branches/cmake-bringup/; revision=49546
134 lines
3.5 KiB
C++
134 lines
3.5 KiB
C++
/*
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* Copyright (c) 1997-1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Copyright (c) 1999
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* Boris Fomitchev
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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#ifndef _STLP_AUTO_PTR_H
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#define _STLP_AUTO_PTR_H
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_STLP_BEGIN_NAMESPACE
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// implementation primitive
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class __ptr_base {
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public:
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void* _M_p;
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void __set(const volatile void* p) { _M_p = __CONST_CAST(void*,p); }
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void __set(void* p) { _M_p = p; }
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};
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template <class _Tp>
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class auto_ptr_ref {
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public:
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__ptr_base& _M_r;
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_Tp* const _M_p;
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auto_ptr_ref(__ptr_base& __r, _Tp* __p) : _M_r(__r), _M_p(__p) { }
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_Tp* release() const { _M_r.__set(__STATIC_CAST(void*, 0)); return _M_p; }
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private:
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//explicitely defined as private to avoid warnings:
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typedef auto_ptr_ref<_Tp> _Self;
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_Self& operator = (_Self const&);
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};
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template<class _Tp>
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class auto_ptr : public __ptr_base {
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public:
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typedef _Tp element_type;
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typedef auto_ptr<_Tp> _Self;
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_Tp* release() _STLP_NOTHROW {
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_Tp* __px = this->get();
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this->_M_p = 0;
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return __px;
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}
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void reset(_Tp* __px = 0) _STLP_NOTHROW {
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_Tp* __pt = this->get();
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if (__px != __pt)
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delete __pt;
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this->__set(__px);
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}
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_Tp* get() const _STLP_NOTHROW
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#if !defined (__GNUC__) || (__GNUC__ > 2)
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{ return __STATIC_CAST(_Tp*, _M_p); }
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#else
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{ return __REINTERPRET_CAST(_Tp*, _M_p); }
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#endif
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#if !defined (_STLP_NO_ARROW_OPERATOR)
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_Tp* operator->() const _STLP_NOTHROW {
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_STLP_VERBOSE_ASSERT(get() != 0, _StlMsg_AUTO_PTR_NULL)
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return get();
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}
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#endif
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_Tp& operator*() const _STLP_NOTHROW {
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_STLP_VERBOSE_ASSERT(get() != 0, _StlMsg_AUTO_PTR_NULL)
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return *get();
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}
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explicit auto_ptr(_Tp* __px = 0) _STLP_NOTHROW { this->__set(__px); }
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#if defined (_STLP_MEMBER_TEMPLATES)
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# if !defined (_STLP_NO_TEMPLATE_CONVERSIONS)
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template<class _Tp1> auto_ptr(auto_ptr<_Tp1>& __r) _STLP_NOTHROW {
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_Tp* __conversionCheck = __r.release();
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this->__set(__conversionCheck);
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}
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# endif
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template<class _Tp1> auto_ptr<_Tp>& operator=(auto_ptr<_Tp1>& __r) _STLP_NOTHROW {
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_Tp* __conversionCheck = __r.release();
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reset(__conversionCheck);
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return *this;
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}
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#endif
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auto_ptr(_Self& __r) _STLP_NOTHROW { this->__set(__r.release()); }
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_Self& operator=(_Self& __r) _STLP_NOTHROW {
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reset(__r.release());
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return *this;
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}
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~auto_ptr() _STLP_NOTHROW { /* boris : reset(0) might be better */ delete this->get(); }
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auto_ptr(auto_ptr_ref<_Tp> __r) _STLP_NOTHROW
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{ this->__set(__r.release()); }
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_Self& operator=(auto_ptr_ref<_Tp> __r) _STLP_NOTHROW {
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reset(__r.release());
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return *this;
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}
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#if defined(_STLP_MEMBER_TEMPLATES) && !defined(_STLP_NO_TEMPLATE_CONVERSIONS)
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template<class _Tp1> operator auto_ptr_ref<_Tp1>() _STLP_NOTHROW
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{ return auto_ptr_ref<_Tp1>(*this, this->get()); }
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template<class _Tp1> operator auto_ptr<_Tp1>() _STLP_NOTHROW
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{ return auto_ptr<_Tp1>(release()); }
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#else
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operator auto_ptr_ref<_Tp>() _STLP_NOTHROW
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{ return auto_ptr_ref<_Tp>(*this, this->get()); }
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#endif
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};
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_STLP_END_NAMESPACE
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#endif /* _STLP_AUTO_PTR_H */
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// Local Variables:
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// mode:C++
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// End:
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