127 lines
3.1 KiB
C++
127 lines
3.1 KiB
C++
// scuArrayP.h -- implementation of AutoArrayPtr template
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 2000. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#if !defined(SLBSCU_ARRAYP_H)
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#define SLBSCU_ARRAYP_H
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namespace scu
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{
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// AutoArrayPtr is like std::auto_ptr but for arrays. It will
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// automatically release the array resource it owns.
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template<class T>
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class AutoArrayPtr
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{
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public:
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// Types
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typedef T ElementType;
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// C'tors/D'tors
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explicit
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AutoArrayPtr(T *p = 0) throw()
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: m_fOwns(p != 0),
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m_p(p)
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{}
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AutoArrayPtr(AutoArrayPtr<T> const &raap) throw()
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: m_fOwns(raap.m_fOwns),
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m_p(raap.Release())
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{}
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~AutoArrayPtr() throw()
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{
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if (m_fOwns)
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delete [] m_p;
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}
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// Operators
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AutoArrayPtr<T> &
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operator=(AutoArrayPtr<T> const &rhs) throw()
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{
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if (&rhs != this)
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{
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if (rhs.Get() != m_p)
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{
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if (m_fOwns)
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delete [] m_p;
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m_fOwns = rhs.m_fOwns;
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}
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else
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if (rhs.m_fOwns)
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m_fOwns = true;
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m_p = rhs.Release();
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}
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return *this;
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}
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T &
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operator*()
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{
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return *Get();
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}
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T const &
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operator*() const
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{
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return *Get();
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}
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T &
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operator[](size_t index)
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{
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return m_p[index];
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}
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T const &
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operator[](size_t index) const
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{
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return m_p[index];
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}
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// Operations
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T *
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Get() const throw()
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{
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return m_p;
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}
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T *
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Release() const throw()
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{
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// workaround function const.
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m_fOwns = false;
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return m_p;
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}
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// Predicates
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protected:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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private:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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bool mutable m_fOwns;
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T *m_p;
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};
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} // namespace scu
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#endif // SLBSCU_ARRAYP_H
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