New directory tree, with preprocessor/ inside interpretor/.

[Faustine.git] / interpretor / preprocessor / faust-0.9.47mr3 / compiler / headers / contextor.hh

diff --git a/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/contextor.hh b/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/contextor.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.
+ ************************************************************************
+ ************************************************************************/
+
+/*****************************************************************************
+       HISTORY
+       22/01/05 : corrected bug on bool signals cached in float variables
+*****************************************************************************/
+
+
+#include <stdio.h>
+#include <iostream>
+#include <sstream>
+#include <vector>
+#include <assert.h>
+
+#ifndef __CONTEXTOR__
+#define __CONTEXTOR__
+
+/**
+ *     An automatic stack of contexts
+ *
+ */
+class contextor
+{
+       static int      top;
+       static int      pile[1024];
+
+ public:
+       contextor(int n)        { top=0; pile[top]=n; } // contructor to be called only once at the
+                                                                                               // top level to initialize the stack
+
+       contextor()             { assert(top >= 0 && top < 1023); int n = pile[top++]; pile[top] = n;}
+       ~contextor()            {top--; }
+
+       void set(int n) { pile[top] = n; }
+       int get()       { return pile[top]; }
+};
+
+#endif