73 lines
997 B
C++
73 lines
997 B
C++
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// Copyright (c) 1994 James Clark
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// See the file COPYING for copying permission.
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#ifndef Ptr_DEF_INCLUDED
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#define Ptr_DEF_INCLUDED 1
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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template<class T>
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Ptr<T>::Ptr(T *ptr) : ptr_(ptr)
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{
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if (ptr_)
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ptr_->ref();
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}
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template<class T>
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Ptr<T>::~Ptr()
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{
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if (ptr_) {
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if (ptr_->unref())
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delete ptr_;
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ptr_ = 0;
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}
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}
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template<class T>
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Ptr<T>::Ptr(const Ptr<T> &p)
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: ptr_(p.ptr_)
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{
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if (p.ptr_)
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p.ptr_->ref();
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}
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template<class T>
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Ptr<T> &Ptr<T>::operator=(const Ptr<T> &p)
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{
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if (p.ptr_)
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p.ptr_->ref();
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if (ptr_ && ptr_->unref())
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delete ptr_;
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ptr_ = p.ptr_;
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return *this;
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}
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template<class T>
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Ptr<T> &Ptr<T>::operator=(T *p)
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{
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if (p)
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p->ref();
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if (ptr_ && ptr_->unref())
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delete ptr_;
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ptr_ = p;
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return *this;
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}
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template<class T>
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void Ptr<T>::clear()
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{
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if (ptr_) {
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if (ptr_->unref())
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delete ptr_;
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ptr_ = 0;
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}
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}
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#ifdef SP_NAMESPACE
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}
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#endif
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#endif /* not Ptr_DEF_INCLUDED */
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