Research V7 development
[unix-history] / usr / src / cmd / lex / header.c
# include "ldefs.c"
phead1(){
ratfor ? rhd1() : chd1();
}
chd1(){
fprintf(fout,"# include \"stdio.h\"\n");
if (ZCH>NCH)
fprintf(fout, "# define U(x) ((x)&0377)\n");
else
fprintf(fout, "# define U(x) x\n");
fprintf(fout, "# define NLSTATE yyprevious=YYNEWLINE\n");
fprintf(fout,"# define BEGIN yybgin = yysvec + 1 +\n");
fprintf(fout,"# define INITIAL 0\n");
fprintf(fout,"# define YYLERR yysvec\n");
fprintf(fout,"# define YYSTATE (yyestate-yysvec-1)\n");
if(optim)
fprintf(fout,"# define YYOPTIM 1\n");
# ifdef DEBUG
fprintf(fout,"# define LEXDEBUG 1\n");
# endif
fprintf(fout,"# define YYLMAX 200\n");
fprintf(fout,"# define output(c) putc(c,yyout)\n");
fprintf(fout, "%s%d%s\n",
"# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==",
ctable['\n'],
"?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)");
fprintf(fout,
"# define unput(c) {yytchar= (c);if(yytchar=='\\n')yylineno--;*yysptr++=yytchar;}\n");
fprintf(fout,"# define yymore() (yymorfg=1)\n");
fprintf(fout,"# define ECHO fprintf(yyout, \"%%s\",yytext)\n");
fprintf(fout,"# define REJECT { nstr = yyreject(); goto yyfussy;}\n");
fprintf(fout,"int yyleng; extern char yytext[];\n");
fprintf(fout,"int yymorfg;\n");
fprintf(fout,"extern char *yysptr, yysbuf[];\n");
fprintf(fout,"int yytchar;\n");
fprintf(fout,"FILE *yyin ={stdin}, *yyout ={stdout};\n");
fprintf(fout,"extern int yylineno;\n");
fprintf(fout,"struct yysvf { \n");
fprintf(fout,"\tstruct yywork *yystoff;\n");
fprintf(fout,"\tstruct yysvf *yyother;\n");
fprintf(fout,"\tint *yystops;};\n");
fprintf(fout,"struct yysvf *yyestate;\n");
fprintf(fout,"extern struct yysvf yysvec[], *yybgin;\n");
}
rhd1(){
fprintf(fout,"integer function yylex(dummy)\n");
fprintf(fout,"define YYLMAX 200\n");
fprintf(fout,"define ECHO call yyecho(yytext,yyleng)\n");
fprintf(fout,"define REJECT nstr = yyrjct(yytext,yyleng);goto 30998\n");
fprintf(fout,"integer nstr,yylook,yywrap\n");
fprintf(fout,"integer yyleng, yytext(YYLMAX)\n");
fprintf(fout,"common /yyxel/ yyleng, yytext\n");
fprintf(fout,"common /yyldat/ yyfnd, yymorf, yyprev, yybgin, yylsp, yylsta\n");
fprintf(fout,"integer yyfnd, yymorf, yyprev, yybgin, yylsp, yylsta(YYLMAX)\n");
fprintf(fout,"for(;;){\n");
fprintf(fout,"\t30999 nstr = yylook(dummy)\n");
fprintf(fout,"\tgoto 30998\n");
fprintf(fout,"\t30000 k = yywrap(dummy)\n");
fprintf(fout,"\tif(k .ne. 0){\n");
fprintf(fout,"\tyylex=0; return; }\n");
fprintf(fout,"\t\telse goto 30998\n");
}
phead2(){
if(!ratfor)chd2();
}
chd2(){
fprintf(fout,"while((nstr = yylook()) >= 0)\n");
fprintf(fout,"yyfussy: switch(nstr){\n");
fprintf(fout,"case 0:\n");
fprintf(fout,"if(yywrap()) return(0); break;\n");
}
ptail(){
if(!pflag)
ratfor ? rtail() : ctail();
pflag = 1;
}
ctail(){
fprintf(fout,"case -1:\nbreak;\n"); /* for reject */
fprintf(fout,"default:\n");
fprintf(fout,"fprintf(yyout,\"bad switch yylook %%d\",nstr);\n");
fprintf(fout,"} return(0); }\n");
fprintf(fout,"/* end of yylex */\n");
}
rtail(){
register int i;
fprintf(fout,"\n30998 if(nstr .lt. 0 .or. nstr .gt. %d)goto 30999\n",casecount);
fprintf(fout,"nstr = nstr + 1\n");
fprintf(fout,"goto(\n");
for(i=0; i<casecount; i++)
fprintf(fout,"%d,\n",30000+i);
fprintf(fout,"30999),nstr\n");
fprintf(fout,"30997 continue\n");
fprintf(fout,"}\nend\n");
}
statistics(){
fprintf(errorf,"%d/%d nodes(%%e), %d/%d positions(%%p), %d/%d (%%n), %ld transitions\n",
tptr, treesize, nxtpos-positions, maxpos, stnum+1, nstates, rcount);
fprintf(errorf, ", %d/%d packed char classes(%%k)", pcptr-pchar, pchlen);
if(optim)fprintf(errorf,", %d/%d packed transitions(%%a)",nptr, ntrans);
fprintf(errorf, ", %d/%d output slots(%%o)", yytop, outsize);
putc('\n',errorf);
}