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/* mySTL memory.hpp
*
* Copyright (C) 2003 Sawtooth Consulting Ltd.
*
* This file is part of yaSSL.
*
* yaSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* yaSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/* mySTL memory implements auto_ptr
*
*/
#ifndef mySTL_MEMORY_HPP
#define mySTL_MEMORY_HPP
#ifdef _MSC_VER
// disable operator-> warning for builtins
#pragma warning(disable:4284)
#endif
namespace mySTL {
template<typename T>
struct auto_ptr_ref {
T* ptr_;
explicit auto_ptr_ref(T* p) : ptr_(p) {}
};
template<typename T>
class auto_ptr {
T* ptr_;
public:
explicit auto_ptr(T* p = 0) : ptr_(p) {}
~auto_ptr()
{
delete ptr_;
}
auto_ptr(auto_ptr& other) : ptr_(other.release()) {}
auto_ptr& operator=(auto_ptr& that)
{
if (this != &that) {
delete ptr_;
ptr_ = that.release();
}
return *this;
}
T* operator->() const
{
return ptr_;
}
T& operator*() const
{
return *ptr_;
}
T* get() const
{
return ptr_;
}
T* release()
{
T* tmp = ptr_;
ptr_ = 0;
return tmp;
}
void reset(T* p = 0)
{
if (ptr_ != p) {
delete ptr_;
ptr_ = p;
}
}
// auto_ptr_ref conversions
auto_ptr(auto_ptr_ref<T> ref) : ptr_(ref.ptr_) {}
auto_ptr& operator=(auto_ptr_ref<T> ref)
{
if (this->ptr_ != ref.ptr_) {
delete ptr_;
ptr_ = ref.ptr_;
}
return *this;
}
template<typename T2>
operator auto_ptr<T2>()
{
return auto_ptr<T2>(this->release());
}
template<typename T2>
operator auto_ptr_ref<T2>()
{
return auto_ptr_ref<T2>(this->release());
}
};
} // namespace mySTL
#endif // mySTL_MEMORY_HPP
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