1 %Start A str def sc br thru sh
12 /* #include <stdio.h> lex puts one out for us */
18 extern char *filename;
19 extern struct symtab symtab[];
22 void dodef(struct symtab *stp);
23 void undefine(char *s);
24 void shell_init(void), shell_exec(void), shell_text(char *);
27 int yyback(int *, int);
31 #define CADD cbuf[clen++]=yytext[0]; \
32 if (clen>=CBUFLEN-1) { ERROR "string too long" WARNING; BEGIN A; }
35 int c, clen, cflag, delim;
36 int ifsw = 0; /* 1 if if statement in progress */
45 switch (yybgin-yysvec-1) { /* witchcraft */
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]); }
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);
71 <A>^".".* { yylval.p = tostring(yytext); return(TROFF); }
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);
87 <A>between return(BETWEEN);
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); }
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); }
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; }
138 <A>dot(ted)? return(yylval.i = DOT);
139 <A>dash(ed)? return(yylval.i = DASH);
140 <A>chop return(yylval.i = CHOP);
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; }
149 <A>"<-" { yylval.i = HEAD1; return(HEAD); }
150 <A>"->" { yylval.i = HEAD2; return(HEAD); }
151 <A>"<->" { yylval.i = HEAD12; return(HEAD); }
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);
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);
170 <A>atan2 return(ATAN2);
171 <A>sqrt return(SQRT);
172 <A>rand return(RAND);
183 <A>"&&" return(ANDAND);
184 <A>"||" return(OROR);
187 <A>Here return(yylval.i = HERE);
190 <A>^Endfor\n { endfor(); }
191 <A>do { yylval.p = delimstr("loop body"); return(DOSTR); }
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);
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;
202 <A>else { yylval.p = delimstr("else part"); return(ELSESTR); }
204 <A>sh{WS}+ { BEGIN sh;
205 if ((delim = input()) == '{') delim = '}'; /* no nested {} */
207 <sh>{A}{B}* { struct symtab *p;
208 if (yytext[0] == delim) {
213 if (p != NULL && p->s_type == DEFNAME) {
224 <sh>.|\n { if (yytext[0] == delim) {
231 <A>define{WS}+ { BEGIN def; }
232 <def>{A}{B}* { definition(yytext); BEGIN A; }
233 <A>undef(ine)?{WS}+{A}{B}* { undefine(yytext); }
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); }
240 <A>{A}{B}* { struct symtab *p;
242 if (p != NULL && p->s_type == DEFNAME) {
245 if (c == '(') /* it's name(...) */
247 else { /* no argument list */
249 dprintf("pushing back `%s'\n", p->s_val.p);
251 } else if (islower((unsigned char)yytext[0])) {
252 yylval.p = tostring(yytext);
255 yylval.p = tostring(yytext);
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++]='\\'; }
271 <A>. return(yylval.i = yytext[0]);