home *** CD-ROM | disk | FTP | other *** search
- /* 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;
- #if NeXT
- int yylook(){
- #else
- yylook(){
- #endif NeXT
- 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
- }
- }
- #if NeXT
- int yyback(p, m)
- int *p;
- int m;
- #else
- yyback(p, m)
- int *p;
- #endif NeXT
- {
- if (p==0) return(0);
- while (*p)
- {
- if (*p++ == m)
- return(1);
- }
- return(0);
- }
- /* the following are only used in the lex library */
- #if NeXT
- int yyinput(){
- #else
- yyinput(){
- #endif NeXT
- return(input());
- }
- #if NeXT
- void yyoutput(c)
- int c;
- {
- output(c);
- }
- #else
- yyoutput(c)
- int c; {
- output(c);
- }
- #endif NeXT
- #if NeXT
- void yyunput(c)
- int c;
- {
- unput(c);
- }
- #else
- yyunput(c)
- int c; {
- unput(c);
- }
- #endif NeXT
-