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researchv10 Norman
# include "stdio.h"
# define U(x) x
# define NLSTATE yyprevious=YYNEWLINE
# define BEGIN yybgin = yysvec + 1 +
# define INITIAL 0
# define YYLERR yysvec
# define YYSTATE (yyestate-yysvec-1)
# define YYOPTIM 1
# define YYLMAX 200
# define output(c) putc(c,yyout)
# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==10?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)
# define unput(c) {yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;}
# define yymore() (yymorfg=1)
# define ECHO fprintf(yyout, "%s",yytext)
# define REJECT { nstr = yyreject(); goto yyfussy;}
int yyleng; extern char yytext[];
int yymorfg;
extern char *yysptr, yysbuf[];
int yytchar;
FILE *yyin ={stdin}, *yyout ={stdout};
extern int yylineno;
struct yysvf {
struct yywork *yystoff;
struct yysvf *yyother;
int *yystops;};
struct yysvf *yyestate;
extern struct yysvf yysvec[], *yybgin;
enum { Begin=257, End, Id, Const, MulOp, AddOp, AsgnOp };
# define YYNEWLINE 10
yylex(){
int nstr; extern int yyprevious;
while((nstr = yylook()) >= 0)
yyfussy: switch(nstr){
case 0:
if(yywrap()) return(0); break;
case 1:
return Begin;
break;
case 2:
return End;
break;
case 3:
return Id;
break;
case 4:
return Const;
break;
case 5:
;
break;
case 6:
;
break;
case 7:
return MulOp;
break;
case 8:
return AddOp;
break;
case 9:
return AsgnOp;
break;
case 10:
return yytext[0];
break;
case 11:
;
break;
case 12:
printf(" ? %s\n", yytext);
break;
case -1:
break;
default:
fprintf(yyout,"bad switch yylook %d",nstr);
} return(0); }
/* end of yylex */
main() {
int t;
while (t = yylex())
printf("%3d %s\n", t, yytext);
return 0;
}
int yyvstop[] ={
0,
12,
0,
11,
12,
0,
11,
0,
10,
12,
0,
7,
12,
0,
8,
12,
0,
7,
12,
0,
4,
12,
0,
12,
0,
3,
12,
0,
3,
12,
0,
3,
12,
0,
7,
0,
4,
0,
9,
0,
3,
0,
3,
0,
3,
0,
3,
0,
2,
3,
0,
6,
0,
3,
0,
5,
0,
1,
3,
0,
0};
# define YYTYPE char
struct yywork { YYTYPE verify, advance; } yycrank[] ={
0,0, 0,0, 1,3, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 1,4, 1,5,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 1,6, 0,0, 1,7,
1,8, 9,15, 0,0, 0,0,
1,9, 1,10, 9,16, 22,26,
23,27, 26,22, 0,0, 0,0,
27,26, 23,28, 26,28, 1,11,
2,11, 27,30, 11,18, 0,0,
0,0, 0,0, 1,12, 10,17,
10,17, 10,17, 10,17, 10,17,
10,17, 10,17, 10,17, 10,17,
10,17, 0,0, 30,26, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 0,0, 0,0, 1,13,
2,13, 0,0, 1,14, 2,14,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 13,20, 14,21,
20,24, 21,25, 24,29, 29,31,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 12,19, 12,19,
12,19, 12,19, 15,22, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 15,22, 15,22,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 15,22, 0,0, 15,23,
15,22, 0,0, 0,0, 0,0,
15,22, 15,22, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 15,22, 0,0,
0,0};
struct yysvf yysvec[] ={
0, 0, 0,
yycrank+-1, 0, 0,
yycrank+-2, yysvec+1, 0,
yycrank+0, 0, yyvstop+1,
yycrank+0, 0, yyvstop+3,
yycrank+0, 0, yyvstop+6,
yycrank+0, 0, yyvstop+8,
yycrank+0, 0, yyvstop+11,
yycrank+0, 0, yyvstop+14,
yycrank+3, 0, yyvstop+17,
yycrank+19, 0, yyvstop+20,
yycrank+1, 0, yyvstop+23,
yycrank+39, 0, yyvstop+25,
yycrank+29, yysvec+12, yyvstop+28,
yycrank+21, yysvec+12, yyvstop+31,
yycrank+-161, 0, 0,
yycrank+0, 0, yyvstop+34,
yycrank+0, yysvec+10, yyvstop+36,
yycrank+0, 0, yyvstop+38,
yycrank+0, yysvec+12, yyvstop+40,
yycrank+29, yysvec+12, yyvstop+42,
yycrank+33, yysvec+12, yyvstop+44,
yycrank+-9, yysvec+15, 0,
yycrank+-10, yysvec+15, 0,
yycrank+29, yysvec+12, yyvstop+46,
yycrank+0, yysvec+12, yyvstop+48,
yycrank+-11, yysvec+15, 0,
yycrank+-14, yysvec+15, 0,
yycrank+0, 0, yyvstop+51,
yycrank+25, yysvec+12, yyvstop+53,
yycrank+-36, yysvec+15, yyvstop+55,
yycrank+0, yysvec+12, yyvstop+57,
0, 0, 0};
struct yywork *yytop = yycrank+226;
struct yysvf *yybgin = yysvec+1;
char yymatch[] ={
00 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,011 ,012 ,01 ,01 ,01 ,01 ,01 ,
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
011 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
'(' ,'(' ,'*' ,'+' ,01 ,'+' ,01 ,'/' ,
'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,
'0' ,'0' ,01 ,'(' ,01 ,01 ,01 ,01 ,
01 ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,01 ,
01 ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,01 ,
0};
char yyextra[] ={
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0};
/* ncform 4.1 83/08/11 */
int yylineno =1;
# define YYU(x) x
# define NLSTATE yyprevious=YYNEWLINE
char yytext[YYLMAX];
struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp;
char yysbuf[YYLMAX];
char *yysptr = yysbuf;
int *yyfnd;
extern struct yysvf *yyestate;
int yyprevious = YYNEWLINE;
yylook(){
register struct yysvf *yystate, **lsp;
register struct yywork *yyt;
struct yysvf *yyz;
int yych;
struct yywork *yyr;
# ifdef LEXDEBUG
int debug;
# endif
char *yylastch;
/* start off machines */
# ifdef LEXDEBUG
debug = 0;
# endif
if (!yymorfg)
yylastch = yytext;
else {
yymorfg=0;
yylastch = yytext+yyleng;
}
for(;;){
lsp = yylstate;
yyestate = yystate = yybgin;
if (yyprevious==YYNEWLINE) yystate++;
for (;;){
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1);
# endif
yyt = yystate->yystoff;
if(yyt == yycrank){ /* may not be any transitions */
yyz = yystate->yyother;
if(yyz == 0)break;
if(yyz->yystoff == yycrank)break;
}
*yylastch++ = yych = input();
tryagain:
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"char ");
allprint(yych);
putchar('\n');
}
# endif
yyr = yyt;
if ( (int)yyt > (int)yycrank){
yyt = yyr + yych;
if (yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transitions */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
}
# ifdef YYOPTIM
else if((int)yyt < (int)yycrank) { /* r < yycrank */
yyt = yyr = yycrank+(yycrank-yyt);
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"compressed state\n");
# endif
yyt = yyt + yych;
if(yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transitions */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
yyt = yyr + YYU(yymatch[yych]);
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"try fall back character ");
allprint(YYU(yymatch[yych]));
putchar('\n');
}
# endif
if(yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transition */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
}
if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1);
# endif
goto tryagain;
}
# endif
else
{unput(*--yylastch);break;}
contin:
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"state %d char ",yystate-yysvec-1);
allprint(yych);
putchar('\n');
}
# endif
;
}
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1);
allprint(yych);
putchar('\n');
}
# endif
while (lsp-- > yylstate){
*yylastch-- = 0;
if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){
yyolsp = lsp;
if(yyextra[*yyfnd]){ /* must backup */
while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){
lsp--;
unput(*yylastch--);
}
}
yyprevious = YYU(*yylastch);
yylsp = lsp;
yyleng = yylastch-yytext+1;
yytext[yyleng] = 0;
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"\nmatch ");
sprint(yytext);
fprintf(yyout," action %d\n",*yyfnd);
}
# endif
return(*yyfnd++);
}
unput(*yylastch);
}
if (yytext[0] == 0 /* && feof(yyin) */)
{
yysptr=yysbuf;
return(0);
}
yyprevious = yytext[0] = input();
if (yyprevious>0)
output(yyprevious);
yylastch=yytext;
# ifdef LEXDEBUG
if(debug)putchar('\n');
# endif
}
}
yyback(p, m)
int *p;
{
if (p==0) return(0);
while (*p)
{
if (*p++ == m)
return(1);
}
return(0);
}
/* the following are only used in the lex library */
yyinput(){
return(input());
}
yyoutput(c)
int c; {
output(c);
}
yyunput(c)
int c; {
unput(c);
}
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