--- /dev/null
+// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+// SALOME SALOMEGUI :
+// File : SVTK_Hash.h
+// Author : Roman NIKOLAEV
+
+#ifndef SVTK_HASH_H
+#define SVTK_HASH_H
+
+#include <vector>
+#include <NCollection_IndexedMap.hxx>
+#include <Standard_Integer.hxx>
+
+typedef std::vector<Standard_Integer> SVTK_ListOfInteger;
+
+class SVTK_Hasher {
+
+public:
+ static Standard_Integer HashCode(const std::vector<Standard_Integer> ids,
+ const Standard_Integer upper) {
+ Standard_Integer seed = ids.size();
+ for( Standard_Integer i = 0; i < (Standard_Integer) ids.size(); i++ ) {
+ Standard_Integer v = ids[i];
+ seed ^= v + 0x9e3779b9 + ( seed << 6 ) + ( seed >> 2 );
+ }
+ return ::HashCode(seed,upper);
+ }
+
+ static Standard_Boolean IsEqual(const SVTK_ListOfInteger& theKey1,
+ const SVTK_ListOfInteger& theKey2) {
+ return theKey1 == theKey2;
+ }
+};
+
+typedef NCollection_IndexedMap<SVTK_ListOfInteger,SVTK_Hasher> SVTK_IndexedMapOfIds;
+
+#endif // SVTK_HASH_H
