1 // Created by: DAUTRY Philippe
2 // Copyright (c) 1997-1999 Matra Datavision
3 // Copyright (c) 1999-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _TDF_LabelMapHasher_HeaderFile
17 #define _TDF_LabelMapHasher_HeaderFile
19 #include <TDF_Label.hxx>
21 //! A label hasher for label maps.
22 class TDF_LabelMapHasher
26 //! Returns a HasCode value for the Key <K> in the range 0..Upper.
27 static Standard_Integer HashCode(const TDF_Label& aLab, const Standard_Integer Upper)
29 return ::HashCode((Standard_Address)aLab.myLabelNode, Upper);
32 //! Returns True when the two keys are the same. Two
33 //! same keys must have the same hashcode, the
34 //! contrary is not necessary.
35 static Standard_Boolean IsEqual(const TDF_Label& aLab1, const TDF_Label& aLab2)
37 return aLab1.IsEqual(aLab2);
41 #endif // _TDF_LabelMapHasher_HeaderFile