1%Start A str def sc br thru sh 2%e 1700 3%k 120 4%a 1800 5%o 1500 6%p 5000 7%n 700 8 9%{ 10#undef input 11#undef unput 12/* #include <stdio.h> lex puts one out for us */ 13#include <ctype.h> 14#include <stdlib.h> 15#include "pic.h" 16#include "y.tab.h" 17 18extern char *filename; 19extern struct symtab symtab[]; 20 21void pbstr(char *); 22void dodef(struct symtab *stp); 23void undefine(char *s); 24void shell_init(void), shell_exec(void), shell_text(char *); 25void endfor(void); 26 27int yyback(int *, int); 28int yylook(void); 29int yywrap(void); 30 31#define CADD cbuf[clen++]=yytext[0]; \ 32 if (clen>=CBUFLEN-1) { ERROR "string too long", cbuf WARNING; BEGIN A; } 33#define CBUFLEN 500 34char cbuf[CBUFLEN]; 35int c, clen, cflag, delim; 36int ifsw = 0; /* 1 if if statement in progress */ 37%} 38 39A [a-zA-Z_] 40B [a-zA-Z0-9_] 41D [0-9] 42WS [ \t] 43 44%% 45 switch (yybgin-yysvec-1) { /* witchcraft */ 46 case 0: 47 BEGIN A; 48 break; 49 case sc: 50 BEGIN A; 51 return('}'); 52 case br: 53 BEGIN A; 54 return(']'); 55 } 56 57<A>{WS} ; 58<A>"\\"\n ; 59<A>\n { return(ST); } 60<A>";" { return(ST); } 61<A>"}" { BEGIN sc; return(ST); } 62<A>"]" { BEGIN br; return(ST); } 63<A>"{"{WS}*(#.*)?\n+ { return(yylval.i = yytext[0]); } 64 65<A>^".PS".* { if (curfile == infile) ERROR ".PS found inside .PS/.PE" WARNING; } 66<A>^".PE".* { if (curfile == infile) { 67 yylval.p = PEstring = tostring(yytext); 68 return(EOF); 69 } 70 } 71<A>^".".* { yylval.p = tostring(yytext); return(TROFF); } 72 73<A>print return(yylval.i = PRINT); 74<A>box return(yylval.i = BOX); 75<A>circle return(yylval.i = CIRCLE); 76<A>arc return(yylval.i = ARC); 77<A>ellipse return(yylval.i = ELLIPSE); 78<A>arrow return(yylval.i = ARROW); 79<A>spline return(yylval.i = SPLINE); 80<A>line return(yylval.i = LINE); 81<A>move return(yylval.i = MOVE); 82<A>"[]" return(yylval.i = BLOCK); 83<A>reset return(RESET); 84<A>sprintf return(SPRINTF); 85 86<A>same return(SAME); 87<A>between return(BETWEEN); 88<A>and return(AND); 89 90<A>of ; 91<A>the ; 92<A>way ; 93 94<A>"."(e|east) { yylval.i = EAST; return(CORNER); } 95<A>"."(r|right) { yylval.i = EAST; return(CORNER); } 96<A>"."(w|west) { yylval.i = WEST; return(CORNER); } 97<A>"."(l|left) { yylval.i = WEST; return(CORNER); } 98<A>"."(n|north) { yylval.i = NORTH; return(CORNER); } 99<A>"."(t|top) { yylval.i = NORTH; return(CORNER); } 100<A>"."(s|south) { yylval.i = SOUTH; return(CORNER); } 101<A>"."(b|bot|bottom) { yylval.i = SOUTH; return(CORNER); } 102<A>"."(c|center) { yylval.i = CENTER; return(CORNER); } 103<A>".start" { yylval.i = START; return(CORNER); } 104<A>".end" { yylval.i = END; return(CORNER); } 105<A>".ne" { yylval.i = NE; return(CORNER); } 106<A>".se" { yylval.i = SE; return(CORNER); } 107<A>".nw" { yylval.i = NW; return(CORNER); } 108<A>".sw" { yylval.i = SW; return(CORNER); } 109 110<A>top" "+of { yylval.i = NORTH; return(CORNER); } 111<A>north" "+of { yylval.i = NORTH; return(CORNER); } 112<A>bottom" "+of { yylval.i = SOUTH; return(CORNER); } 113<A>south" "+of { yylval.i = SOUTH; return(CORNER); } 114<A>left" "+of { yylval.i = WEST; return(CORNER); } 115<A>west" "+of { yylval.i = WEST; return(CORNER); } 116<A>right" "+of { yylval.i = EAST; return(CORNER); } 117<A>east" "+of { yylval.i = EAST; return(CORNER); } 118<A>center" "+of { yylval.i = CENTER; return(CORNER); } 119<A>start" "+of { yylval.i = START; return(CORNER); } 120<A>end" "+of { yylval.i = END; return(CORNER); } 121 122<A>height|ht { yylval.i = HEIGHT; return(ATTR); } 123<A>width|wid { yylval.i = WIDTH; return(ATTR); } 124<A>radius|rad { yylval.i = RADIUS; return(ATTR); } 125<A>diameter|diam { yylval.i = DIAMETER; return(ATTR); } 126<A>size { yylval.i = SIZE; return(ATTR); } 127<A>left { yylval.i = LEFT; return(DIR); } 128<A>right { yylval.i = RIGHT; return(DIR); } 129<A>up { yylval.i = UP; return(DIR); } 130<A>down { yylval.i = DOWN; return(DIR); } 131<A>cw { yylval.i = CW; return(ATTR); } 132<A>clockwise { yylval.i = CW; return(ATTR); } 133<A>ccw { yylval.i = CCW; return(ATTR); } 134<A>invis(ible)? { yylval.i = INVIS; return(ATTR); } 135<A>noedge { yylval.i = INVIS; return ATTR; } 136<A>fill return(yylval.i = FILL); 137<A>solid ; 138<A>dot(ted)? return(yylval.i = DOT); 139<A>dash(ed)? return(yylval.i = DASH); 140<A>chop return(yylval.i = CHOP); 141 142<A>spread { yylval.i = SPREAD; return TEXTATTR; } 143<A>ljust { yylval.i = LJUST; return TEXTATTR; } 144<A>rjust { yylval.i = RJUST; return TEXTATTR; } 145<A>above { yylval.i = ABOVE; return TEXTATTR; } 146<A>below { yylval.i = BELOW; return TEXTATTR; } 147<A>center { yylval.i = CENTER; return TEXTATTR; } 148 149<A>"<-" { yylval.i = HEAD1; return(HEAD); } 150<A>"->" { yylval.i = HEAD2; return(HEAD); } 151<A>"<->" { yylval.i = HEAD12; return(HEAD); } 152 153<A>".x" return(yylval.i = DOTX); 154<A>".y" return(yylval.i = DOTY); 155<A>"."(ht|height) return(yylval.i = DOTHT); 156<A>"."(wid|width) return(yylval.i = DOTWID); 157<A>"."(rad|radius) return(yylval.i = DOTRAD); 158 159<A>from return(yylval.i = FROM); 160<A>to return(yylval.i = TO); 161<A>at return(yylval.i = AT); 162<A>by return(yylval.i = BY); 163<A>with return(yylval.i = WITH); 164<A>last return(yylval.i = LAST); 165 166<A>log return(LOG); 167<A>exp return(EXP); 168<A>sin return(SIN); 169<A>cos return(COS); 170<A>atan2 return(ATAN2); 171<A>sqrt return(SQRT); 172<A>rand return(RAND); 173<A>max return(MAX); 174<A>min return(MIN); 175<A>int return(INT); 176 177<A>"==" return(EQ); 178<A>">=" return(GE); 179<A>"<=" return(LE); 180<A>"!=" return(NEQ); 181<A>">" return(GT); 182<A>"<" return(LT); 183<A>"&&" return(ANDAND); 184<A>"||" return(OROR); 185<A>"!" return(NOT); 186 187<A>Here return(yylval.i = HERE); 188 189<A>for return(FOR); 190<A>^Endfor\n { endfor(); } 191<A>do { yylval.p = delimstr("loop body"); return(DOSTR); } 192 193<A>copy|include return(COPY); 194<A>(thru|through){WS}+ { BEGIN thru; return(THRU); } 195<thru>{A}{B}*|. { yylval.st = copythru(yytext); BEGIN A; return(DEFNAME); } 196<A>until return(UNTIL); 197 198<A>if { ifsw = 1; return(IF); } 199<A>then { if (!ifsw) { yylval.i = THEN; return(ATTR); } 200 yylval.p = delimstr("then part"); ifsw = 0; 201 return(THENSTR); } 202<A>else { yylval.p = delimstr("else part"); return(ELSESTR); } 203 204<A>sh{WS}+ { BEGIN sh; 205 if ((delim = input()) == '{') delim = '}'; /* no nested {} */ 206 shell_init(); } 207<sh>{A}{B}* { struct symtab *p; 208 if (yytext[0] == delim) { 209 shell_exec(); 210 BEGIN A; 211 } else { 212 p = lookup(yytext); 213 if (p != NULL && p->s_type == DEFNAME) { 214 c = input(); 215 unput(c); 216 if (c == '(') 217 dodef(p); 218 else 219 pbstr(p->s_val.p); 220 } else 221 shell_text(yytext); 222 } 223 } 224<sh>.|\n { if (yytext[0] == delim) { 225 shell_exec(); 226 BEGIN A; 227 } else 228 shell_text(yytext); 229 } 230 231<A>define{WS}+ { BEGIN def; } 232<def>{A}{B}* { definition(yytext); BEGIN A; } 233<A>undef(ine)?{WS}+{A}{B}* { undefine(yytext); } 234 235<A>first { yylval.i = 1; return(NTH); } 236<A>{D}+(th|nd|rd|st) { yylval.i = atoi(yytext); return(NTH); } 237<A>({D}+("."?){D}*|"."{D}+)((e|E)("+"|-)?{D}+)?i? { 238 yylval.f = atof(yytext); return(NUMBER); } 239 240<A>{A}{B}* { struct symtab *p; 241 p = lookup(yytext); 242 if (p != NULL && p->s_type == DEFNAME) { 243 c = input(); 244 unput(c); 245 if (c == '(') /* it's name(...) */ 246 dodef(p); 247 else { /* no argument list */ 248 pbstr(p->s_val.p); 249 dprintf("pushing back `%s'\n", p->s_val.p); 250 } 251 } else if (islower(yytext[0])) { 252 yylval.p = tostring(yytext); 253 return(VARNAME); 254 } else { 255 yylval.p = tostring(yytext); 256 return(PLACENAME); 257 } 258 } 259 260<A>\" { BEGIN str; clen=0; } 261<str>\" { cbuf[clen]=0; yylval.p = tostring(cbuf); BEGIN A; return(TEXT); } 262<str>\n { cbuf[clen]=0; ERROR "missing quote in string \"%s\"", cbuf WARNING; 263 BEGIN A; return(ST); } 264<str>"\\\"" { cbuf[clen++]='"'; } 265<str>"\\"t { cbuf[clen++]='\t'; } 266<str>"\\\\" { cbuf[clen++]='\\'; } 267<str>. { CADD; } 268 269<A>#.* ; 270 271<A>. return(yylval.i = yytext[0]); 272 273%% 274