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garray.h

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00001 /*
00002     Crystal Space utility library: vector class interface
00003     Copyright (C) 1998,1999,2000 by Andrew Zabolotny <bit@eltech.ru>
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 #ifndef __CS_GARRAY_H__
00021 #define __CS_GARRAY_H__
00022 
00023 #include "csutil/array.h"
00024 
00039 template <class T>
00040 class csDirtyAccessArray : public csArray<T>
00041 {
00042 private:
00043   int RefCount;
00044 
00045 public:
00050   csDirtyAccessArray (int ilimit = 0, int ithreshold = 0)
00051         : csArray<T> (ilimit, ithreshold)
00052   {
00053     RefCount = 0;
00054   }
00055 
00056   // Reference counting.
00057   void IncRef () { RefCount++; }
00058 
00059   // Reference counting. Delete array when reference reaches 0.
00060   void DecRef ()
00061   {
00062     if (RefCount == 1) { DeleteAll (); }
00063     RefCount--;
00064   }
00065 
00067   T* GetArray ()
00068   {
00069     if (Length () > 0)
00070       return &Get (0);
00071     else
00072       return 0;
00073   }
00074 
00076   const T* GetArray () const
00077   {
00078     if (Length () > 0)
00079       return &Get (0);
00080     else
00081       return 0;
00082   }
00083 
00089   T* GetArrayCopy ()
00090   {
00091     if (Length () > 0)
00092     {
00093       T* copy = new T [Length ()];
00094       memcpy (copy, &Get (0), sizeof (T) * Length ());
00095       return copy;
00096     }
00097     else
00098       return 0;
00099   }
00100 };
00101 
00102 #endif // __CS_GARRAY_H__
00103 

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