54de4dca6a92b55c6c2a4f69e126b36573f4b2ab
[Faustine.git] / interpretor / faust-0.9.47mr3 / compiler / headers / occurrences.hh
1 /************************************************************************
2 ************************************************************************
3 FAUST compiler
4 Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
5 ---------------------------------------------------------------------
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 ************************************************************************
20 ************************************************************************/
21
22 #ifndef __OCCURENCES__
23 #define __OCCURENCES__
24
25 #include "tlib.hh"
26
27 /**
28 * Count subtree occurences
29 * Count the number of occurences of each subtree of a root tree.
30 */
31
32 class Occurrences
33 {
34 Tree fKey; // specific property key
35
36 public:
37 Occurrences(Tree root); // count the occurrences of each subtree of root
38 int getCount(Tree t); // return the number of occurrences of t in root
39
40 private:
41 Tree specificKey(Tree root); // specific key for occurences counting in root
42 void countOccurrences(Tree t); // increment the occurrences of t and its subtrees
43 void setCount(Tree t, int c); // set the number of occurrences of t
44 };
45
46 #endif