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Date:: Tue Nov 1 15:01:00 2005 UTC
Message:: isdigit (Tom Miller)
Actions:: History | Blame | Raw File
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" 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 <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		{ 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((unsigned char)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 %%