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Up to [Research Unix] / researchv8dc / cmd / pic|
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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>
13: #include <ctype.h>
14: #include "pic.h"
15: #include "y.tab.h"
16:
17: extern float atof();
18: extern struct symtab symtab[];
19: extern char *filename, *copythru();
20:
21: #define CADD cbuf[clen++]=yytext[0]; if(clen>=CBUFLEN-1) {yyerror("string too long", cbuf); BEGIN A;}
22: #define CBUFLEN 500
23: char cbuf[CBUFLEN];
24: int c, clen, cflag, delim;
25: int ifsw = 0; /* 1 if if statement in progress */
26: %}
27:
28: A [a-zA-Z_]
29: B [a-zA-Z0-9_]
30: D [0-9]
31: WS [ \t]
32:
33: %%
34: switch (yybgin-yysvec-1) { /* witchcraft */
35: case 0:
36: BEGIN A;
37: break;
38: case sc:
39: BEGIN A;
40: return('}');
41: case br:
42: BEGIN A;
43: return(']');
44: }
45:
46: <A>{WS} ;
47: <A>"\\"\n ;
48: <A>\n { return(ST); }
49: <A>";" { return(ST); }
50: <A>"}" { BEGIN sc; return(ST); }
51: <A>"]" { BEGIN br; return(ST); }
52:
53: <A>^".PS".* { if (curfile == infile) yyerror(".PS found inside .PS/.PE"); }
54: <A>^"."P[EF].* { if (curfile == infile) {
55: yylval.i = yytext[2];
56: return(EOF);
57: }
58: }
59: <A>^".".* { yylval.p = tostring(yytext); return(TROFF); }
60:
61: <A>print return(yylval.i = PRINT);
62: <A>box return(yylval.i = BOX);
63: <A>circle return(yylval.i = CIRCLE);
64: <A>arc return(yylval.i = ARC);
65: <A>ellipse return(yylval.i = ELLIPSE);
66: <A>arrow return(yylval.i = ARROW);
67: <A>spline return(yylval.i = SPLINE);
68: <A>line return(yylval.i = LINE);
69: <A>move return(yylval.i = MOVE);
70: <A>"[]" return(yylval.i = BLOCK);
71: <A>reset return(RESET);
72: <A>sprintf return(SPRINTF);
73:
74: <A>same return(SAME);
75: <A>between return(BETWEEN);
76: <A>and return(AND);
77:
78: <A>of ;
79: <A>the ;
80: <A>way ;
81:
82: <A>"."(e|east) { yylval.i = EAST; return(CORNER); }
83: <A>"."(r|right) { yylval.i = EAST; return(CORNER); }
84: <A>"."(w|west) { yylval.i = WEST; return(CORNER); }
85: <A>"."(l|left) { yylval.i = WEST; return(CORNER); }
86: <A>"."(n|north) { yylval.i = NORTH; return(CORNER); }
87: <A>"."(t|top) { yylval.i = NORTH; return(CORNER); }
88: <A>"."(s|south) { yylval.i = SOUTH; return(CORNER); }
89: <A>"."(b|bot|bottom) { yylval.i = SOUTH; return(CORNER); }
90: <A>"."(c|center) { yylval.i = CENTER; return(CORNER); }
91: <A>".start" { yylval.i = START; return(CORNER); }
92: <A>".end" { yylval.i = END; return(CORNER); }
93: <A>".ne" { yylval.i = NE; return(CORNER); }
94: <A>".se" { yylval.i = SE; return(CORNER); }
95: <A>".nw" { yylval.i = NW; return(CORNER); }
96: <A>".sw" { yylval.i = SW; return(CORNER); }
97:
98: <A>top" "+of { yylval.i = NORTH; return(CORNER); }
99: <A>north" "+of { yylval.i = NORTH; return(CORNER); }
100: <A>bottom" "+of { yylval.i = SOUTH; return(CORNER); }
101: <A>south" "+of { yylval.i = SOUTH; return(CORNER); }
102: <A>left" "+of { yylval.i = WEST; return(CORNER); }
103: <A>west" "+of { yylval.i = WEST; return(CORNER); }
104: <A>right" "+of { yylval.i = EAST; return(CORNER); }
105: <A>east" "+of { yylval.i = EAST; return(CORNER); }
106: <A>center" "+of { yylval.i = CENTER; return(CORNER); }
107: <A>start" "+of { yylval.i = START; return(CORNER); }
108: <A>end" "+of { yylval.i = END; return(CORNER); }
109:
110: <A>height|ht { yylval.i = HEIGHT; return(ATTR); }
111: <A>width|wid { yylval.i = WIDTH; return(ATTR); }
112: <A>radius|rad { yylval.i = RADIUS; return(ATTR); }
113: <A>diameter|diam { yylval.i = DIAMETER; return(ATTR); }
114: <A>size { yylval.i = SIZE; return(ATTR); }
115: <A>left { yylval.i = LEFT; return(DIR); }
116: <A>right { yylval.i = RIGHT; return(DIR); }
117: <A>up { yylval.i = UP; return(DIR); }
118: <A>down { yylval.i = DOWN; return(DIR); }
119: <A>cw { yylval.i = CW; return(ATTR); }
120: <A>clockwise { yylval.i = CW; return(ATTR); }
121: <A>ccw { yylval.i = CCW; return(ATTR); }
122: <A>invis(ible)? { yylval.i = INVIS; return(ATTR); }
123: <A>solid ;
124: <A>dot(ted)? return(yylval.i = DOT);
125: <A>dash(ed)? return(yylval.i = DASH);
126: <A>chop return(yylval.i = CHOP);
127:
128: <A>spread { yylval.i = SPREAD; return TEXTATTR; }
129: <A>fill { yylval.i = FILL; return TEXTATTR; }
130: <A>ljust { yylval.i = LJUST; return TEXTATTR; }
131: <A>rjust { yylval.i = RJUST; return TEXTATTR; }
132: <A>above { yylval.i = ABOVE; return TEXTATTR; }
133: <A>below { yylval.i = BELOW; return TEXTATTR; }
134: <A>center { yylval.i = CENTER; return TEXTATTR; }
135:
136: <A>"<-" { yylval.i = HEAD1; return(HEAD); }
137: <A>"->" { yylval.i = HEAD2; return(HEAD); }
138: <A>"<->" { yylval.i = HEAD12; return(HEAD); }
139:
140: <A>".x" return(yylval.i = DOTX);
141: <A>".y" return(yylval.i = DOTY);
142: <A>"."(ht|height) return(yylval.i = DOTHT);
143: <A>"."(wid|width) return(yylval.i = DOTWID);
144: <A>"."(rad|radius) return(yylval.i = DOTRAD);
145:
146: <A>from return(yylval.i = FROM);
147: <A>to return(yylval.i = TO);
148: <A>at return(yylval.i = AT);
149: <A>by return(yylval.i = BY);
150: <A>with return(yylval.i = WITH);
151: <A>last return(yylval.i = LAST);
152:
153: <A>log return(LOG);
154: <A>exp return(EXP);
155: <A>sin return(SIN);
156: <A>cos return(COS);
157: <A>atan2 return(ATAN2);
158: <A>sqrt return(SQRT);
159: <A>rand return(RAND);
160: <A>max return(MAX);
161: <A>min return(MIN);
162: <A>int return(INT);
163:
164: <A>"==" return(EQ);
165: <A>">=" return(GE);
166: <A>"<=" return(LE);
167: <A>"!=" return(NEQ);
168: <A>">" return(GT);
169: <A>"<" return(LT);
170: <A>"&&" return(ANDAND);
171: <A>"||" return(OROR);
172: <A>"!" return(NOT);
173:
174: <A>Here return(yylval.i = HERE);
175:
176: <A>for return(FOR);
177: <A>^Endfor\n { endfor(); }
178: <A>do { yylval.p = delimstr("loop body"); return(DOSTR); }
179:
180: <A>copy|include return(COPY);
181: <A>(thru|through){WS}+ { BEGIN thru; return(THRU); }
182: <thru>{A}{B}*|. { yylval.p = copythru(yytext); BEGIN A; return(DEFNAME); }
183: <A>until return(UNTIL);
184:
185: <A>if { ifsw = 1; return(IF); }
186: <A>then { if (!ifsw) { yylval.i = THEN; return(ATTR); }
187: yylval.p = delimstr("then part"); ifsw = 0;
188: return(THENSTR); }
189: <A>else { yylval.p = delimstr("else part"); return(ELSESTR); }
190:
191: <A>sh{WS}+ { BEGIN sh;
192: if ((delim = input()) == '{') delim = '}'; /* no nested {} */
193: shell_init(); }
194: <sh>{A}{B}* { struct symtab *p;
195: if (yytext[0] == delim) {
196: shell_exec();
197: BEGIN A;
198: } else {
199: p = lookup(yytext, 0);
200: if (p != NULL && p->s_type == DEFNAME) {
201: c = input();
202: unput(c);
203: if (c == '(')
204: dodef(p);
205: else
206: pbstr(p->s_val.p);
207: } else
208: shell_text(yytext);
209: }
210: }
211: <sh>.|\n { if (yytext[0] == delim) {
212: shell_exec();
213: BEGIN A;
214: } else
215: shell_text(yytext);
216: }
217:
218: <A>define{WS}+ { BEGIN def; }
219: <def>{A}{B}* { definition(yytext); BEGIN A; }
220: <A>undef(ine)?{WS}+{A}{B}* { undefine(yytext); }
221:
222: <A>first { yylval.i = 1; return(NTH); }
223: <A>{D}+(th|nd|rd|st) { yylval.i = atoi(yytext); return(NTH); }
224: <A>({D}+("."?){D}*|"."{D}+)((e|E)("+"|-)?{D}+)?i? {
225: yylval.f = atof(yytext); return(NUMBER); }
226:
227: <A>{A}{B}* { struct symtab *p;
228: p = lookup(yytext);
229: if (p != NULL && p->s_type == DEFNAME) {
230: c = input();
231: unput(c);
232: if (c == '(') /* it's name(...) */
233: dodef(p);
234: else { /* no argument list */
235: pbstr(p->s_val);
236: dprintf("pushing back `%s'\n", p->s_val);
237: }
238: } else if (islower(yytext[0])) {
239: yylval.p = tostring(yytext);
240: return(VARNAME);
241: } else {
242: yylval.p = tostring(yytext);
243: return(PLACENAME);
244: }
245: }
246:
247: <A>\" { BEGIN str; clen=0; }
248: <str>\" { cbuf[clen]=0; yylval.p = tostring(cbuf); BEGIN A; return(TEXT); }
249: <str>\n { yyerror("newline in string"); BEGIN A; return(ST); }
250: <str>"\\\"" { cbuf[clen++]='"'; }
251: <str>"\\"t { cbuf[clen++]='\t'; }
252: <str>"\\\\" { cbuf[clen++]='\\'; }
253: <str>. { CADD; }
254:
255: <A>#.* ;
256:
257: <A>. return(yylval.i = yytext[0]);
258:
259: %%
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