--- /dev/null
+/************************************************************************
+ ************************************************************************
+ FAUST compiler
+ Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
+ ---------------------------------------------------------------------
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ ************************************************************************
+ ************************************************************************/
+
+#ifndef __OCCURENCES__
+#define __OCCURENCES__
+
+#include "tlib.hh"
+
+/**
+ * Count subtree occurences
+ * Count the number of occurences of each subtree of a root tree.
+ */
+
+class Occurrences
+{
+ Tree fKey; // specific property key
+
+ public:
+ Occurrences(Tree root); // count the occurrences of each subtree of root
+ int getCount(Tree t); // return the number of occurrences of t in root
+
+ private:
+ Tree specificKey(Tree root); // specific key for occurences counting in root
+ void countOccurrences(Tree t); // increment the occurrences of t and its subtrees
+ void setCount(Tree t, int c); // set the number of occurrences of t
+};
+
+#endif