File:  [LON-CAPA] / capa / capa51 / pProj / Attic / capaFormulaParser.c
Revision 1.1: download - view: text, annotated - select for diffs
Tue Sep 28 21:26:21 1999 UTC (25 years, 1 month ago) by albertel
Branches: MAIN
CVS tags: HEAD
Initial revision

#ifndef lint
static char yysccsid[] = "@(#)yaccpar	1.9 (Berkeley) 02/21/93";
#endif
#define YYBYACC 1
#define YYMAJOR 1
#define YYMINOR 9
#define yyclearin (yychar=(-1))
#define yyerrok (yyerrflag=0)
#define YYRECOVERING (yyerrflag!=0)
#define yyparse fml_parse
#define yylex fml_lex
#define yyerror fml_error
#define yychar fml_char
#define yyval fml_val
#define yylval fml_lval
#define yydebug fml_debug
#define yynerrs fml_nerrs
#define yyerrflag fml_errflag
#define yyss fml_ss
#define yyssp fml_ssp
#define yyvs fml_vs
#define yyvsp fml_vsp
#define yylhs fml_lhs
#define yylen fml_len
#define yydefred fml_defred
#define yydgoto fml_dgoto
#define yysindex fml_sindex
#define yyrindex fml_rindex
#define yygindex fml_gindex
#define yytable fml_table
#define yycheck fml_check
#define yyname fml_name
#define yyrule fml_rule
#define YYPREFIX "fml_"
#line 8 "capaFormula.y"
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
#include "capaParser.h"   /* _symbol structure def */
#include "capaCommon.h"
#include "capaFunction.h"
#include "capaToken.h"

#ifdef __hpux
#include <stdlib.h>
#include <alloca.h>
#endif

#ifdef   FML_DBUG
#define  FMLDBUG_PR1(xx)        { printf(xx);    fflush(stdout); }
#define  FMLDBUG_PR2(xx,yy)     { printf(xx,yy); fflush(stdout); }
#define  FMLDBUG_PR3(xx,yy,zz)  { printf(xx,yy,zz); fflush(stdout); }
#else
#define  FMLDBUG_PR1(xx)        { }
#define  FMLDBUG_PR2(xx,yy)     { }
#define  FMLDBUG_PR3(xx,yy,zz)  { }
#endif

#define ADD_op          1
#define SUB_op          2
#define MUL_op          3
#define DIV_op          4
#define IDIV_op         5
#define NOT_DEFINED_op  9

#ifdef  YYSTYPE
#undef  YYSTYPE
#endif
#define YYSTYPE  Symbol_p

/* =============================================================== */

extern      int         Func_idx;
extern      Symbol      FuncStack[MAX_FUNC_NEST];

double      FormulaVal;
int         FormulaParseOK=1;

#line 81 "fma.tab.c"
#define F_NUMBER 257
#define V_ID 258
#define F_ID 259
#define EoI 260
#define F_ERROR 261
#define F_PLUS 262
#define F_MINUS 263
#define F_MULT 264
#define F_DIV 265
#define F_MOD 266
#define F_POW 267
#define F_LPAR 268
#define F_RPAR 269
#define F_COMMA 270
#define YYERRCODE 256
short fml_lhs[] = {                                        -1,
    0,    1,    1,    1,    1,    1,    2,    2,    2,    2,
    3,    3,    5,    5,    4,    4,    4,    4,    4,    4,
    4,
};
short fml_len[] = {                                         2,
    1,    3,    3,    1,    1,    1,    3,    3,    3,    1,
    3,    1,    3,    1,    3,    4,    1,    2,    2,    1,
    3,
};
short fml_defred[] = {                                      0,
    6,   20,   17,    0,    5,    0,    0,    0,    0,    0,
    0,    0,   12,    0,   19,   18,    0,    0,    0,    0,
    0,    0,    0,   15,    0,    0,   21,    0,    0,    0,
    0,    0,   11,   16,    0,    0,
};
short fml_dgoto[] = {                                       9,
   10,   11,   12,   13,   26,
};
short fml_sindex[] = {                                   -227,
    0,    0,    0, -266,    0, -219, -219, -227,    0, -241,
 -218, -262,    0, -245,    0,    0, -254, -219, -219, -219,
 -219, -219, -219,    0, -241, -244,    0, -218, -218, -262,
 -262, -262,    0,    0, -227, -241,
};
short fml_rindex[] = {                                      0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    7,
   33,    1,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0, -216,    0,    0,   37,   42,   10,
   19,   28,    0,    0,    0, -214,
};
short fml_gindex[] = {                                      0,
   -8,   39,   30,   -3,    0,
};
#define YYTABLESIZE 312
short fml_table[] = {                                      17,
   10,   14,   15,   16,   23,   25,    1,   18,   19,    7,
    1,    2,    3,    4,   27,    5,    6,    7,    8,   33,
   18,   19,    8,   24,   34,   35,   36,    9,    1,    2,
    3,    4,    4,    5,    6,    7,    2,    2,    3,    4,
    8,    3,    6,    7,    0,   20,   21,   22,    8,   30,
   31,   32,   14,   14,   13,   13,   28,   29,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,   10,   10,   10,   10,   10,    0,    0,   10,
   10,    7,    7,    7,    7,    7,    0,    0,    7,    7,
    8,    8,    8,    8,    8,    0,    0,    8,    8,    9,
    9,    9,    9,    9,    4,    4,    9,    9,    2,    2,
    0,    4,    4,    3,    3,    2,    2,    0,    0,    0,
    3,    3,
};
short fml_check[] = {                                       8,
    0,  268,    6,    7,  267,   14,    0,  262,  263,    0,
  256,  257,  258,  259,  269,  261,  262,  263,    0,   23,
  262,  263,  268,  269,  269,  270,   35,    0,  256,  257,
  258,  259,    0,  261,  262,  263,    0,  257,  258,  259,
  268,    0,  262,  263,   -1,  264,  265,  266,  268,   20,
   21,   22,  269,  270,  269,  270,   18,   19,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   -1,   -1,  262,  263,  264,  265,  266,   -1,   -1,  269,
  270,  262,  263,  264,  265,  266,   -1,   -1,  269,  270,
  262,  263,  264,  265,  266,   -1,   -1,  269,  270,  262,
  263,  264,  265,  266,  262,  263,  269,  270,  262,  263,
   -1,  269,  270,  262,  263,  269,  270,   -1,   -1,   -1,
  269,  270,
};
#define YYFINAL 9
#ifndef YYDEBUG
#define YYDEBUG 0
#endif
#define YYMAXTOKEN 270
#if YYDEBUG
char *fml_name[] = {
"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"F_NUMBER","V_ID","F_ID","EoI",
"F_ERROR","F_PLUS","F_MINUS","F_MULT","F_DIV","F_MOD","F_POW","F_LPAR","F_RPAR",
"F_COMMA",
};
char *fml_rule[] = {
"$accept : f_expr",
"f_expr : block",
"block : block F_PLUS term",
"block : block F_MINUS term",
"block : term",
"block : F_ERROR",
"block : error",
"term : term F_MULT basic_constr",
"term : term F_DIV basic_constr",
"term : term F_MOD basic_constr",
"term : basic_constr",
"basic_constr : basic_constr F_POW basic_item",
"basic_constr : basic_item",
"arg_list : arg_list F_COMMA block",
"arg_list : block",
"basic_item : F_ID F_LPAR F_RPAR",
"basic_item : F_ID F_LPAR arg_list F_RPAR",
"basic_item : V_ID",
"basic_item : F_MINUS basic_item",
"basic_item : F_PLUS basic_item",
"basic_item : F_NUMBER",
"basic_item : F_LPAR block F_RPAR",
};
#endif
#ifndef YYSTYPE
typedef int YYSTYPE;
#endif
#ifdef YYSTACKSIZE
#undef YYMAXDEPTH
#define YYMAXDEPTH YYSTACKSIZE
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 500
#define YYMAXDEPTH 500
#endif
#endif
int yydebug;
int yynerrs;
int yyerrflag;
int yychar;
short *yyssp;
YYSTYPE *yyvsp;
YYSTYPE yyval;
YYSTYPE yylval;
short yyss[YYSTACKSIZE];
YYSTYPE yyvs[YYSTACKSIZE];
#define yystacksize YYSTACKSIZE
#line 155 "capaFormula.y"
void
fml_error(char *msg)
{
  FormulaParseOK=0;
  printf("Error Parsing: %s\n",msg);
  
}
/* ---------------------------------------------------- */
Symbol *
f_symbol_pow(ap,bp) Symbol *ap; Symbol *bp;
{
  Symbol *cp;
  double  a, b;
  int     error = 0;
  
  cp = NULL;
  switch(ap->s_type) {
     case I_VAR:      a = (double)(ap->s_int);
         break;
     case I_CONSTANT: a = (double)(ap->s_int); capa_mfree((char *)ap);
         break;
     case R_VAR:      a = ap->s_real;
         break;
     case R_CONSTANT: a = ap->s_real;   capa_mfree((char *)ap);
         break;
     case S_VAR:
     case S_CONSTANT: 
     default:         error = 1;  break;
  }
  switch(bp->s_type) {
     case I_VAR:      b = (double)(bp->s_int);
         break;
     case I_CONSTANT: b = (double)(bp->s_int);  capa_mfree((char *)bp);
         break;
     case R_VAR:      b = bp->s_real;
         break;
     case R_CONSTANT: b = bp->s_real;   capa_mfree((char *)bp);
         break;
     case S_VAR:
     case S_CONSTANT: 
     default:         error = 1; break;
  }
  if (!error) {
    cp = (Symbol *)capa_malloc(sizeof(Symbol),1);
    cp->s_type = R_CONSTANT;
    cp->s_real = pow(a,b);
    
  }
  return (cp);
}

/* ============================================================================= */
#line 320 "fma.tab.c"
#define YYABORT goto yyabort
#define YYREJECT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR goto yyerrlab
int
yyparse()
{
    register int yym, yyn, yystate;
#if YYDEBUG
    register char *yys;
    extern char *getenv();

    if (yys = getenv("YYDEBUG"))
    {
        yyn = *yys;
        if (yyn >= '0' && yyn <= '9')
            yydebug = yyn - '0';
    }
#endif

    yynerrs = 0;
    yyerrflag = 0;
    yychar = (-1);

    yyssp = yyss;
    yyvsp = yyvs;
    *yyssp = yystate = 0;

yyloop:
    if (yyn = yydefred[yystate]) goto yyreduce;
    if (yychar < 0)
    {
        if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, reading %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
    }
    if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: state %d, shifting to state %d\n",
                    YYPREFIX, yystate, yytable[yyn]);
#endif
        if (yyssp >= yyss + yystacksize - 1)
        {
            goto yyoverflow;
        }
        *++yyssp = yystate = yytable[yyn];
        *++yyvsp = yylval;
        yychar = (-1);
        if (yyerrflag > 0)  --yyerrflag;
        goto yyloop;
    }
    if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
        yyn = yytable[yyn];
        goto yyreduce;
    }
    if (yyerrflag) goto yyinrecovery;
#ifdef lint
    goto yynewerror;
#endif
yynewerror:
    yyerror("syntax error");
#ifdef lint
    goto yyerrlab;
#endif
yyerrlab:
    ++yynerrs;
yyinrecovery:
    if (yyerrflag < 3)
    {
        yyerrflag = 3;
        for (;;)
        {
            if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: state %d, error recovery shifting\
 to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
#endif
                if (yyssp >= yyss + yystacksize - 1)
                {
                    goto yyoverflow;
                }
                *++yyssp = yystate = yytable[yyn];
                *++yyvsp = yylval;
                goto yyloop;
            }
            else
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: error recovery discarding state %d\n",
                            YYPREFIX, *yyssp);
#endif
                if (yyssp <= yyss) goto yyabort;
                --yyssp;
                --yyvsp;
            }
        }
    }
    else
    {
        if (yychar == 0) goto yyabort;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
        yychar = (-1);
        goto yyloop;
    }
yyreduce:
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: state %d, reducing by rule %d (%s)\n",
                YYPREFIX, yystate, yyn, yyrule[yyn]);
#endif
    yym = yylen[yyn];
    yyval = yyvsp[1-yym];
    switch (yyn)
    {
case 1:
#line 66 "capaFormula.y"
{ switch(yyvsp[0]->s_type) {
                                                      case I_VAR:
                                                      case I_CONSTANT: FormulaVal = (double)(yyvsp[0]->s_int);
                                                          break;
                                                      case R_VAR: 
                                                      case R_CONSTANT: FormulaVal = yyvsp[0]->s_real;
                                                          break;
                                                      case S_VAR:
                                                      case S_CONSTANT: FormulaParseOK = 0;
                                                          break;
                                                      default:         FormulaParseOK = 0;
                                                          break;
                                                    }
                                                    capa_mfree((char *)yyvsp[0]);
                                                    FMLDBUG_PR1("[f_expr <= block ]\n");
                                                  }
break;
case 2:
#line 84 "capaFormula.y"
{ yyval = symbols_op(yyvsp[-2], yyvsp[0], ADD_op);  }
break;
case 3:
#line 85 "capaFormula.y"
{ yyval = symbols_op(yyvsp[-2], yyvsp[0], SUB_op);  }
break;
case 4:
#line 86 "capaFormula.y"
{ yyval = yyvsp[0]; }
break;
case 5:
#line 87 "capaFormula.y"
{ FormulaParseOK = 0; FMLDBUG_PR1("[F_ERROR]\n"); return 0;}
break;
case 6:
#line 88 "capaFormula.y"
{ FormulaParseOK = 0; FMLDBUG_PR1("[ERROR]\n"); return 0;  }
break;
case 7:
#line 91 "capaFormula.y"
{ yyval = symbols_op(yyvsp[-2], yyvsp[0], MUL_op);  }
break;
case 8:
#line 92 "capaFormula.y"
{ yyval = symbols_op(yyvsp[-2], yyvsp[0], DIV_op);  }
break;
case 9:
#line 93 "capaFormula.y"
{ yyval = symbols_op(yyvsp[-2], yyvsp[0], IDIV_op); }
break;
case 10:
#line 94 "capaFormula.y"
{ yyval = yyvsp[0]; }
break;
case 11:
#line 97 "capaFormula.y"
{ yyval = f_symbol_pow(yyvsp[-2],yyvsp[0]);
                                                    FMLDBUG_PR3("[%.16g ^ %.16g] ",yyvsp[-2]->s_real,yyvsp[0]->s_real);       }
break;
case 12:
#line 99 "capaFormula.y"
{ yyval = yyvsp[0]; }
break;
case 13:
#line 102 "capaFormula.y"
{ yyval = yyvsp[-2];
                                                    yyval->s_argc++;
                                                    yyval->s_argp = addto_arglist(yyvsp[-2]->s_argp, yyvsp[0]);
                                                  }
break;
case 14:
#line 106 "capaFormula.y"
{ yyval = yyvsp[0];
                                                    yyval->s_argc = 1;
                                                    yyval->s_argp = new_arglist(yyvsp[0]);
                                                  }
break;
case 15:
#line 112 "capaFormula.y"
{  int tmp;
                                         
                                                     Func_idx--;
                                                     if(Func_idx >= 0 ) {
                                                       tmp = match_function(FuncStack[Func_idx].s_name,0);
                                                       yyval = do_function(tmp, 0, NULL );
                                                       capa_mfree(FuncStack[Func_idx].s_name);
                                                     }
                                                  }
break;
case 16:
#line 121 "capaFormula.y"
{  int  tmp;
                                         
                                                     Func_idx--;
                                                     if(Func_idx >= 0 ) {
                                                        tmp = match_function(FuncStack[Func_idx].s_name,yyvsp[-1]->s_argc);
					                yyval = do_function(tmp, yyvsp[-1]->s_argc, yyvsp[-1]->s_argp);
					                capa_mfree(FuncStack[Func_idx].s_name);
					                free_arglist(yyvsp[-1]->s_argp);
                                                      }
                                                  }
break;
case 17:
#line 131 "capaFormula.y"
{ FMLDBUG_PR3("[V %s = %.16g] ",yyvsp[0]->s_name, yyvsp[0]->s_real);
                                                    yyval = yyvsp[0];
                                                  }
break;
case 18:
#line 134 "capaFormula.y"
{ yyval = yyvsp[0];
                                                    switch(yyvsp[0]->s_type) {
                                                      case I_VAR:      yyval = (Symbol *)capa_malloc(sizeof(Symbol),1);
                                                             yyval->s_type = I_CONSTANT;
                                                      case I_CONSTANT: yyval->s_int =    - yyvsp[0]->s_int; break;
                                                      case R_VAR: yyval = (Symbol *)capa_malloc(sizeof(Symbol),1);
                                                             yyval->s_type = R_CONSTANT;
                                                      case R_CONSTANT: yyval->s_real =   (-1.0)*(yyvsp[0]->s_real); 
                                                             break;
                                                      case S_VAR:
                                                      case S_CONSTANT: break;
                                                      default:         break;
                                                    }
                                                  }
break;
case 19:
#line 148 "capaFormula.y"
{ yyval = yyvsp[0]; }
break;
case 20:
#line 149 "capaFormula.y"
{ FMLDBUG_PR2("[F %.16g] ",yyvsp[0]->s_real);
                                                    yyval = yyvsp[0];
                                                  }
break;
case 21:
#line 152 "capaFormula.y"
{ yyval = yyvsp[-1]; }
break;
#line 601 "fma.tab.c"
    }
    yyssp -= yym;
    yystate = *yyssp;
    yyvsp -= yym;
    yym = yylhs[yyn];
    if (yystate == 0 && yym == 0)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: after reduction, shifting from state 0 to\
 state %d\n", YYPREFIX, YYFINAL);
#endif
        yystate = YYFINAL;
        *++yyssp = YYFINAL;
        *++yyvsp = yyval;
        if (yychar < 0)
        {
            if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
            if (yydebug)
            {
                yys = 0;
                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                if (!yys) yys = "illegal-symbol";
                printf("%sdebug: state %d, reading %d (%s)\n",
                        YYPREFIX, YYFINAL, yychar, yys);
            }
#endif
        }
        if (yychar == 0) goto yyaccept;
        goto yyloop;
    }
    if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
        yystate = yytable[yyn];
    else
        yystate = yydgoto[yym];
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: after reduction, shifting from state %d \
to state %d\n", YYPREFIX, *yyssp, yystate);
#endif
    if (yyssp >= yyss + yystacksize - 1)
    {
        goto yyoverflow;
    }
    *++yyssp = yystate;
    *++yyvsp = yyval;
    goto yyloop;
yyoverflow:
    yyerror("yacc stack overflow");
yyabort:
    return (1);
yyaccept:
    return (0);
}

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