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1.1 ! root 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: ! 18: extern char *filename; ! 19: extern struct symtab symtab[]; ! 20: ! 21: void pbstr(char *); ! 22: void dodef(struct symtab *stp); ! 23: void undefine(char *s); ! 24: void shell_init(void), shell_exec(void), shell_text(char *); ! 25: void endfor(void); ! 26: ! 27: int yyback(int *, int); ! 28: int yylook(void); ! 29: int 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 ! 34: char cbuf[CBUFLEN]; ! 35: int c, clen, cflag, delim; ! 36: int ifsw = 0; /* 1 if if statement in progress */ ! 37: %} ! 38: ! 39: A [a-zA-Z_] ! 40: B [a-zA-Z0-9_] ! 41: D [0-9] ! 42: WS [ \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: ! 64: <A>^".PS".* { if (curfile == infile) ERROR ".PS found inside .PS/.PE" WARNING; } ! 65: <A>^"."P[EF].* { if (curfile == infile) { ! 66: yylval.i = yytext[2]; ! 67: PEseen = 1; ! 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 { yylval.i = FILL; return ATTR; } ! 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: %%
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