New directory tree, with preprocessor/ inside interpretor/.

[Faustine.git] / interpretor / preprocessor / faust-0.9.47mr3 / compiler / tlib / occurrences.hh

diff --git a/interpretor/preprocessor/faust-0.9.47mr3/compiler/tlib/occurrences.hh b/interpretor/preprocessor/faust-0.9.47mr3/compiler/tlib/occurrences.hh
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+/************************************************************************
+ ************************************************************************
+    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