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
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    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
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 ************************************************************************
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/*****************************************************************************
    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__

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