1 |
– |
/* Copyright (c) 1991 Regents of the University of California */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* Compute data values using expression parser |
6 |
|
* |
13 |
|
* 1/29/87 Made variables conditional (VARIABLE) |
14 |
|
* |
15 |
|
* 5/19/88 Added constant subexpression elimination (RCONST) |
16 |
+ |
* |
17 |
+ |
* 2/19/03 Eliminated conditional compiles in favor of esupport extern. |
18 |
|
*/ |
19 |
|
|
20 |
+ |
#include "copyright.h" |
21 |
+ |
|
22 |
|
#include <stdio.h> |
23 |
|
|
24 |
|
#include <ctype.h> |
25 |
|
|
26 |
|
#include <errno.h> |
27 |
|
|
28 |
+ |
#include <math.h> |
29 |
+ |
|
30 |
+ |
#include <stdlib.h> |
31 |
+ |
|
32 |
|
#include "calcomp.h" |
33 |
|
|
34 |
< |
#define MAXLINE 256 /* maximum line length */ |
34 |
> |
#define MAXLINE 256 /* maximum line length */ |
35 |
|
|
36 |
< |
#define newnode() (EPNODE *)ecalloc(1, sizeof(EPNODE)) |
36 |
> |
#define newnode() (EPNODE *)ecalloc(1, sizeof(EPNODE)) |
37 |
|
|
38 |
< |
#define isdecimal(c) (isdigit(c) || (c) == '.') |
38 |
> |
#define isdecimal(c) (isdigit(c) || (c) == '.') |
39 |
|
|
40 |
< |
#ifndef atof |
41 |
< |
extern double atof(); |
37 |
< |
#endif |
38 |
< |
extern double pow(); |
39 |
< |
extern char *fgets(), *savestr(); |
40 |
< |
extern char *emalloc(), *ecalloc(); |
41 |
< |
extern EPNODE *curfunc; |
42 |
< |
extern double efunc(), evariable(); |
43 |
< |
static double euminus(), echannel(), eargument(), enumber(); |
40 |
> |
static double euminus(), eargument(), enumber(); |
41 |
> |
static double echannel(); |
42 |
|
static double eadd(), esubtr(), emult(), edivi(), epow(); |
43 |
|
static double ebotch(); |
46 |
– |
extern int errno; |
44 |
|
|
45 |
+ |
unsigned int esupport = /* what to support */ |
46 |
+ |
E_VARIABLE | E_FUNCTION ; |
47 |
+ |
|
48 |
|
int nextc; /* lookahead character */ |
49 |
|
|
50 |
< |
double (*eoper[])() = { /* expression operations */ |
50 |
> |
double (*eoper[])() = { /* expression operations */ |
51 |
|
ebotch, |
52 |
– |
#ifdef VARIABLE |
52 |
|
evariable, |
54 |
– |
#else |
55 |
– |
ebotch, |
56 |
– |
#endif |
53 |
|
enumber, |
54 |
|
euminus, |
59 |
– |
#ifdef INCHAN |
55 |
|
echannel, |
61 |
– |
#else |
62 |
– |
ebotch, |
63 |
– |
#endif |
64 |
– |
#ifdef FUNCTION |
56 |
|
efunc, |
57 |
|
eargument, |
67 |
– |
#else |
58 |
|
ebotch, |
59 |
|
ebotch, |
70 |
– |
#endif |
71 |
– |
ebotch, |
72 |
– |
ebotch, |
60 |
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
61 |
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
62 |
|
emult, |
88 |
|
EPNODE *ep; |
89 |
|
|
90 |
|
initstr(expr, NULL, 0); |
104 |
– |
#if defined(VARIABLE) && defined(FUNCTION) |
91 |
|
curfunc = NULL; |
106 |
– |
#endif |
92 |
|
ep = getE1(); |
93 |
|
if (nextc != EOF) |
94 |
|
syntax("unexpected character"); |
110 |
|
} |
111 |
|
|
112 |
|
|
113 |
+ |
int |
114 |
+ |
epcmp(ep1, ep2) /* compare two expressions for equivalence */ |
115 |
+ |
register EPNODE *ep1, *ep2; |
116 |
+ |
{ |
117 |
+ |
double d; |
118 |
+ |
|
119 |
+ |
if (ep1->type != ep2->type) |
120 |
+ |
return(1); |
121 |
+ |
|
122 |
+ |
switch (ep1->type) { |
123 |
+ |
|
124 |
+ |
case VAR: |
125 |
+ |
return(ep1->v.ln != ep2->v.ln); |
126 |
+ |
|
127 |
+ |
case NUM: |
128 |
+ |
if (ep2->v.num == 0) |
129 |
+ |
return(ep1->v.num != 0); |
130 |
+ |
d = ep1->v.num / ep2->v.num; |
131 |
+ |
return(d > 1.000000000001 | d < 0.999999999999); |
132 |
+ |
|
133 |
+ |
case CHAN: |
134 |
+ |
case ARG: |
135 |
+ |
return(ep1->v.chan != ep2->v.chan); |
136 |
+ |
|
137 |
+ |
case '=': |
138 |
+ |
case ':': |
139 |
+ |
return(epcmp(ep1->v.kid->sibling, ep2->v.kid->sibling)); |
140 |
+ |
|
141 |
+ |
case TICK: |
142 |
+ |
case SYM: /* should never get this one */ |
143 |
+ |
return(0); |
144 |
+ |
|
145 |
+ |
default: |
146 |
+ |
ep1 = ep1->v.kid; |
147 |
+ |
ep2 = ep2->v.kid; |
148 |
+ |
while (ep1 != NULL) { |
149 |
+ |
if (ep2 == NULL) |
150 |
+ |
return(1); |
151 |
+ |
if (epcmp(ep1, ep2)) |
152 |
+ |
return(1); |
153 |
+ |
ep1 = ep1->sibling; |
154 |
+ |
ep2 = ep2->sibling; |
155 |
+ |
} |
156 |
+ |
return(ep2 != NULL); |
157 |
+ |
} |
158 |
+ |
} |
159 |
+ |
|
160 |
+ |
|
161 |
+ |
void |
162 |
|
epfree(epar) /* free a parse tree */ |
163 |
< |
register EPNODE *epar; |
163 |
> |
register EPNODE *epar; |
164 |
|
{ |
165 |
|
register EPNODE *ep; |
166 |
|
|
167 |
|
switch (epar->type) { |
168 |
|
|
135 |
– |
#if defined(VARIABLE) || defined(FUNCTION) |
169 |
|
case VAR: |
170 |
|
varfree(epar->v.ln); |
171 |
|
break; |
139 |
– |
#endif |
172 |
|
|
173 |
|
case SYM: |
174 |
|
freestr(epar->v.name); |
181 |
|
break; |
182 |
|
|
183 |
|
default: |
184 |
< |
for (ep = epar->v.kid; ep != NULL; ep = ep->sibling) |
184 |
> |
while ((ep = epar->v.kid) != NULL) { |
185 |
> |
epar->v.kid = ep->sibling; |
186 |
|
epfree(ep); |
187 |
+ |
} |
188 |
|
break; |
189 |
|
|
190 |
|
} |
193 |
|
} |
194 |
|
|
195 |
|
/* the following used to be a switch */ |
162 |
– |
#ifdef FUNCTION |
196 |
|
static double |
197 |
|
eargument(ep) |
198 |
< |
EPNODE *ep; |
198 |
> |
EPNODE *ep; |
199 |
|
{ |
200 |
|
return(argument(ep->v.chan)); |
201 |
|
} |
169 |
– |
#endif |
202 |
|
|
203 |
|
static double |
204 |
|
enumber(ep) |
205 |
< |
EPNODE *ep; |
205 |
> |
EPNODE *ep; |
206 |
|
{ |
207 |
|
return(ep->v.num); |
208 |
|
} |
209 |
|
|
210 |
|
static double |
211 |
|
euminus(ep) |
212 |
< |
EPNODE *ep; |
212 |
> |
EPNODE *ep; |
213 |
|
{ |
214 |
|
register EPNODE *ep1 = ep->v.kid; |
215 |
|
|
216 |
|
return(-evalue(ep1)); |
217 |
|
} |
218 |
|
|
187 |
– |
#ifdef INCHAN |
219 |
|
static double |
220 |
|
echannel(ep) |
221 |
< |
EPNODE *ep; |
221 |
> |
EPNODE *ep; |
222 |
|
{ |
223 |
|
return(chanvalue(ep->v.chan)); |
224 |
|
} |
194 |
– |
#endif |
225 |
|
|
226 |
|
static double |
227 |
|
eadd(ep) |
228 |
< |
EPNODE *ep; |
228 |
> |
EPNODE *ep; |
229 |
|
{ |
230 |
|
register EPNODE *ep1 = ep->v.kid; |
231 |
|
|
234 |
|
|
235 |
|
static double |
236 |
|
esubtr(ep) |
237 |
< |
EPNODE *ep; |
237 |
> |
EPNODE *ep; |
238 |
|
{ |
239 |
|
register EPNODE *ep1 = ep->v.kid; |
240 |
|
|
243 |
|
|
244 |
|
static double |
245 |
|
emult(ep) |
246 |
< |
EPNODE *ep; |
246 |
> |
EPNODE *ep; |
247 |
|
{ |
248 |
|
register EPNODE *ep1 = ep->v.kid; |
249 |
|
|
252 |
|
|
253 |
|
static double |
254 |
|
edivi(ep) |
255 |
< |
EPNODE *ep; |
255 |
> |
EPNODE *ep; |
256 |
|
{ |
257 |
|
register EPNODE *ep1 = ep->v.kid; |
258 |
|
double d; |
268 |
|
|
269 |
|
static double |
270 |
|
epow(ep) |
271 |
< |
EPNODE *ep; |
271 |
> |
EPNODE *ep; |
272 |
|
{ |
273 |
|
register EPNODE *ep1 = ep->v.kid; |
274 |
|
double d; |
275 |
< |
int lasterrno; |
275 |
> |
int lasterrno; |
276 |
|
|
277 |
|
lasterrno = errno; |
278 |
|
errno = 0; |
279 |
|
d = pow(evalue(ep1), evalue(ep1->sibling)); |
280 |
< |
#ifdef IEEE |
280 |
> |
#ifdef IEEE |
281 |
|
if (!finite(d)) |
282 |
|
errno = EDOM; |
283 |
|
#endif |
284 |
< |
if (errno) { |
284 |
> |
if (errno == EDOM || errno == ERANGE) { |
285 |
|
wputs("Illegal power\n"); |
286 |
|
return(0.0); |
287 |
|
} |
291 |
|
|
292 |
|
static double |
293 |
|
ebotch(ep) |
294 |
< |
EPNODE *ep; |
294 |
> |
EPNODE *ep; |
295 |
|
{ |
296 |
|
eputs("Bad expression!\n"); |
297 |
|
quit(1); |
300 |
|
|
301 |
|
EPNODE * |
302 |
|
ekid(ep, n) /* return pointer to a node's nth kid */ |
303 |
< |
register EPNODE *ep; |
303 |
> |
register EPNODE *ep; |
304 |
|
register int n; |
305 |
|
{ |
306 |
|
|
314 |
|
|
315 |
|
int |
316 |
|
nekids(ep) /* return # of kids for node ep */ |
317 |
< |
register EPNODE *ep; |
317 |
> |
register EPNODE *ep; |
318 |
|
{ |
319 |
|
register int n = 0; |
320 |
|
|
325 |
|
} |
326 |
|
|
327 |
|
|
328 |
+ |
void |
329 |
|
initfile(fp, fn, ln) /* prepare input file */ |
330 |
|
FILE *fp; |
331 |
|
char *fn; |
332 |
|
int ln; |
333 |
|
{ |
334 |
< |
static char inpbuf[MAXLINE]; |
334 |
> |
static char inpbuf[MAXLINE]; |
335 |
|
|
336 |
|
infp = fp; |
337 |
|
linbuf = inpbuf; |
343 |
|
} |
344 |
|
|
345 |
|
|
346 |
+ |
void |
347 |
|
initstr(s, fn, ln) /* prepare input string */ |
348 |
|
char *s; |
349 |
|
char *fn; |
358 |
|
} |
359 |
|
|
360 |
|
|
361 |
+ |
void |
362 |
|
getscanpos(fnp, lnp, spp, fpp) /* return current scan position */ |
363 |
|
char **fnp; |
364 |
|
int *lnp; |
405 |
|
|
406 |
|
|
407 |
|
char * |
408 |
< |
ltoa(l) /* convert long to ascii */ |
408 |
> |
long2ascii(l) /* convert long to ascii */ |
409 |
|
long l; |
410 |
|
{ |
411 |
< |
static char buf[16]; |
411 |
> |
static char buf[16]; |
412 |
|
register char *cp; |
413 |
< |
int neg = 0; |
413 |
> |
int neg = 0; |
414 |
|
|
415 |
|
if (l == 0) |
416 |
|
return("0"); |
430 |
|
} |
431 |
|
|
432 |
|
|
433 |
+ |
void |
434 |
|
syntax(err) /* report syntax error and quit */ |
435 |
|
char *err; |
436 |
|
{ |
440 |
|
if (infile != NULL) eputs(infile); |
441 |
|
if (lineno != 0) { |
442 |
|
eputs(infile != NULL ? ", line " : "line "); |
443 |
< |
eputs(ltoa((long)lineno)); |
443 |
> |
eputs(long2ascii((long)lineno)); |
444 |
|
} |
445 |
< |
eputs(": syntax error:\n"); |
445 |
> |
eputs(":\n"); |
446 |
|
} |
447 |
|
eputs(linbuf); |
448 |
|
if (linbuf[strlen(linbuf)-1] != '\n') |
456 |
|
} |
457 |
|
|
458 |
|
|
459 |
+ |
void |
460 |
|
addekid(ep, ekid) /* add a child to ep */ |
461 |
< |
register EPNODE *ep; |
462 |
< |
EPNODE *ekid; |
461 |
> |
register EPNODE *ep; |
462 |
> |
EPNODE *ekid; |
463 |
|
{ |
464 |
|
if (ep->v.kid == NULL) |
465 |
|
ep->v.kid = ekid; |
475 |
|
char * |
476 |
|
getname() /* scan an identifier */ |
477 |
|
{ |
478 |
< |
static char str[MAXWORD+1]; |
478 |
> |
static char str[MAXWORD+1]; |
479 |
|
register int i, lnext; |
480 |
|
|
481 |
|
lnext = nextc; |
517 |
|
lnext = scan(); |
518 |
|
} |
519 |
|
if (lnext == '.' && i < MAXWORD) { |
520 |
< |
str[i++] = lnext; |
521 |
< |
lnext = scan(); |
520 |
> |
str[i++] = lnext; |
521 |
> |
lnext = scan(); |
522 |
> |
if (i == 1 && !isdigit(lnext)) |
523 |
> |
syntax("badly formed number"); |
524 |
|
while (isdigit(lnext) && i < MAXWORD) { |
525 |
|
str[i++] = lnext; |
526 |
|
lnext = scan(); |
527 |
|
} |
528 |
|
} |
529 |
< |
if ((lnext == 'e' || lnext == 'E') && i < MAXWORD) { |
530 |
< |
str[i++] = lnext; |
531 |
< |
lnext = scan(); |
532 |
< |
if ((lnext == '-' || lnext == '+') && i < MAXWORD) { |
529 |
> |
if ((lnext == 'e' | lnext == 'E') && i < MAXWORD) { |
530 |
> |
str[i++] = lnext; |
531 |
> |
lnext = scan(); |
532 |
> |
if ((lnext == '-' | lnext == '+') && i < MAXWORD) { |
533 |
|
str[i++] = lnext; |
534 |
|
lnext = scan(); |
535 |
|
} |
536 |
+ |
if (!isdigit(lnext)) |
537 |
+ |
syntax("missing exponent"); |
538 |
|
while (isdigit(lnext) && i < MAXWORD) { |
539 |
|
str[i++] = lnext; |
540 |
|
lnext = scan(); |
548 |
|
|
549 |
|
EPNODE * |
550 |
|
getE1() /* E1 -> E1 ADDOP E2 */ |
551 |
< |
/* E2 */ |
551 |
> |
/* E2 */ |
552 |
|
{ |
553 |
|
register EPNODE *ep1, *ep2; |
554 |
|
|
559 |
|
scan(); |
560 |
|
addekid(ep2, ep1); |
561 |
|
addekid(ep2, getE2()); |
562 |
< |
#ifdef RCONST |
563 |
< |
if (ep1->type == NUM && ep1->sibling->type == NUM) |
562 |
> |
if (esupport&E_RCONST && |
563 |
> |
ep1->type == NUM && ep1->sibling->type == NUM) |
564 |
|
ep2 = rconst(ep2); |
526 |
– |
#endif |
565 |
|
ep1 = ep2; |
566 |
|
} |
567 |
|
return(ep1); |
570 |
|
|
571 |
|
EPNODE * |
572 |
|
getE2() /* E2 -> E2 MULOP E3 */ |
573 |
< |
/* E3 */ |
573 |
> |
/* E3 */ |
574 |
|
{ |
575 |
|
register EPNODE *ep1, *ep2; |
576 |
|
|
581 |
|
scan(); |
582 |
|
addekid(ep2, ep1); |
583 |
|
addekid(ep2, getE3()); |
584 |
< |
#ifdef RCONST |
585 |
< |
if (ep1->type == NUM && ep1->sibling->type == NUM) |
584 |
> |
if (esupport&E_RCONST && |
585 |
> |
ep1->type == NUM && ep1->sibling->type == NUM) |
586 |
|
ep2 = rconst(ep2); |
549 |
– |
#endif |
587 |
|
ep1 = ep2; |
588 |
|
} |
589 |
|
return(ep1); |
592 |
|
|
593 |
|
EPNODE * |
594 |
|
getE3() /* E3 -> E4 ^ E3 */ |
595 |
< |
/* E4 */ |
595 |
> |
/* E4 */ |
596 |
|
{ |
597 |
|
register EPNODE *ep1, *ep2; |
598 |
|
|
603 |
|
scan(); |
604 |
|
addekid(ep2, ep1); |
605 |
|
addekid(ep2, getE3()); |
606 |
< |
#ifdef RCONST |
607 |
< |
if (ep1->type == NUM && ep1->sibling->type == NUM) |
606 |
> |
if (esupport&E_RCONST && |
607 |
> |
ep1->type == NUM && ep1->sibling->type == NUM) |
608 |
|
ep2 = rconst(ep2); |
572 |
– |
#endif |
609 |
|
return(ep2); |
610 |
|
} |
611 |
|
return(ep1); |
614 |
|
|
615 |
|
EPNODE * |
616 |
|
getE4() /* E4 -> ADDOP E5 */ |
617 |
< |
/* E5 */ |
617 |
> |
/* E5 */ |
618 |
|
{ |
619 |
|
register EPNODE *ep1, *ep2; |
620 |
|
|
642 |
|
|
643 |
|
EPNODE * |
644 |
|
getE5() /* E5 -> (E1) */ |
645 |
< |
/* VAR */ |
646 |
< |
/* NUM */ |
647 |
< |
/* $N */ |
648 |
< |
/* FUNC(E1,..) */ |
649 |
< |
/* ARG */ |
645 |
> |
/* VAR */ |
646 |
> |
/* NUM */ |
647 |
> |
/* $N */ |
648 |
> |
/* FUNC(E1,..) */ |
649 |
> |
/* ARG */ |
650 |
|
{ |
651 |
< |
int i; |
651 |
> |
int i; |
652 |
|
char *nam; |
653 |
|
register EPNODE *ep1, *ep2; |
654 |
|
|
661 |
|
return(ep1); |
662 |
|
} |
663 |
|
|
664 |
< |
#ifdef INCHAN |
629 |
< |
if (nextc == '$') { |
664 |
> |
if (esupport&E_INCHAN && nextc == '$') { |
665 |
|
scan(); |
666 |
|
ep1 = newnode(); |
667 |
|
ep1->type = CHAN; |
668 |
|
ep1->v.chan = getinum(); |
669 |
|
return(ep1); |
670 |
|
} |
636 |
– |
#endif |
671 |
|
|
672 |
< |
#if defined(VARIABLE) || defined(FUNCTION) |
673 |
< |
if (isalpha(nextc) || nextc == CNTXMARK) { |
674 |
< |
nam = getname(); |
675 |
< |
#if defined(VARIABLE) && defined(FUNCTION) |
676 |
< |
ep1 = NULL; |
677 |
< |
if (curfunc != NULL) |
672 |
> |
if (esupport&(E_VARIABLE|E_FUNCTION) && |
673 |
> |
(isalpha(nextc) || nextc == CNTXMARK)) { |
674 |
> |
nam = getname(); |
675 |
> |
ep1 = NULL; |
676 |
> |
if ((esupport&(E_VARIABLE|E_FUNCTION)) == (E_VARIABLE|E_FUNCTION) |
677 |
> |
&& curfunc != NULL) |
678 |
|
for (i = 1, ep2 = curfunc->v.kid->sibling; |
679 |
< |
ep2 != NULL; i++, ep2 = ep2->sibling) |
679 |
> |
ep2 != NULL; i++, ep2 = ep2->sibling) |
680 |
|
if (!strcmp(ep2->v.name, nam)) { |
681 |
|
ep1 = newnode(); |
682 |
|
ep1->type = ARG; |
683 |
|
ep1->v.chan = i; |
684 |
|
break; |
685 |
|
} |
686 |
< |
if (ep1 == NULL) |
653 |
< |
#endif |
654 |
< |
{ |
686 |
> |
if (ep1 == NULL) { |
687 |
|
ep1 = newnode(); |
688 |
|
ep1->type = VAR; |
689 |
|
ep1->v.ln = varinsert(nam); |
690 |
|
} |
691 |
< |
#ifdef FUNCTION |
660 |
< |
if (nextc == '(') { |
691 |
> |
if (esupport&E_FUNCTION && nextc == '(') { |
692 |
|
ep2 = newnode(); |
693 |
|
ep2->type = FUNC; |
694 |
|
addekid(ep2, ep1); |
700 |
|
if (nextc != ')') |
701 |
|
syntax("')' expected"); |
702 |
|
scan(); |
703 |
< |
} |
673 |
< |
#ifndef VARIABLE |
674 |
< |
else |
703 |
> |
} else if (!(esupport&E_VARIABLE)) |
704 |
|
syntax("'(' expected"); |
705 |
< |
#endif |
677 |
< |
#endif |
678 |
< |
#ifdef RCONST |
679 |
< |
if (isconstvar(ep1)) |
705 |
> |
if (esupport&E_RCONST && isconstvar(ep1)) |
706 |
|
ep1 = rconst(ep1); |
681 |
– |
#endif |
707 |
|
return(ep1); |
708 |
|
} |
684 |
– |
#endif |
709 |
|
|
710 |
|
if (isdecimal(nextc)) { |
711 |
|
ep1 = newnode(); |
717 |
|
} |
718 |
|
|
719 |
|
|
696 |
– |
#ifdef RCONST |
720 |
|
EPNODE * |
721 |
|
rconst(epar) /* reduce a constant expression */ |
722 |
< |
register EPNODE *epar; |
722 |
> |
register EPNODE *epar; |
723 |
|
{ |
724 |
|
register EPNODE *ep; |
725 |
|
|
727 |
|
ep->type = NUM; |
728 |
|
errno = 0; |
729 |
|
ep->v.num = evalue(epar); |
730 |
< |
if (errno) |
731 |
< |
syntax("bad constant expression"); |
730 |
> |
if (errno == EDOM || errno == ERANGE) |
731 |
> |
syntax("bad constant expression"); |
732 |
|
epfree(epar); |
733 |
|
|
734 |
|
return(ep); |
735 |
|
} |
736 |
|
|
737 |
|
|
738 |
+ |
int |
739 |
|
isconstvar(ep) /* is ep linked to a constant expression? */ |
740 |
< |
register EPNODE *ep; |
740 |
> |
register EPNODE *ep; |
741 |
|
{ |
718 |
– |
#ifdef VARIABLE |
742 |
|
register EPNODE *ep1; |
720 |
– |
#ifdef FUNCTION |
743 |
|
|
744 |
< |
if (ep->type == FUNC) { |
744 |
> |
if (esupport&E_FUNCTION && ep->type == FUNC) { |
745 |
|
if (!isconstfun(ep->v.kid)) |
746 |
|
return(0); |
747 |
|
for (ep1 = ep->v.kid->sibling; ep1 != NULL; ep1 = ep1->sibling) |
749 |
|
return(0); |
750 |
|
return(1); |
751 |
|
} |
730 |
– |
#endif |
752 |
|
if (ep->type != VAR) |
753 |
|
return(0); |
754 |
|
ep1 = ep->v.ln->def; |
755 |
|
if (ep1 == NULL || ep1->type != ':') |
756 |
|
return(0); |
757 |
< |
#ifdef FUNCTION |
737 |
< |
if (ep1->v.kid->type != SYM) |
757 |
> |
if (esupport&E_FUNCTION && ep1->v.kid->type != SYM) |
758 |
|
return(0); |
739 |
– |
#endif |
759 |
|
return(1); |
741 |
– |
#else |
742 |
– |
return(ep->type == FUNC); |
743 |
– |
#endif |
760 |
|
} |
761 |
|
|
762 |
|
|
763 |
< |
#if defined(FUNCTION) && defined(VARIABLE) |
763 |
> |
int |
764 |
|
isconstfun(ep) /* is ep linked to a constant function? */ |
765 |
< |
register EPNODE *ep; |
765 |
> |
register EPNODE *ep; |
766 |
|
{ |
767 |
|
register EPNODE *dp; |
768 |
|
register LIBR *lp; |
769 |
|
|
770 |
|
if (ep->type != VAR) |
771 |
|
return(0); |
772 |
< |
if ((dp = ep->v.ln->def) != NULL && dp->v.kid->type == FUNC) |
773 |
< |
return(dp->type == ':'); |
774 |
< |
if ((lp = liblookup(ep->v.ln->name)) != NULL) |
772 |
> |
if ((dp = ep->v.ln->def) != NULL) |
773 |
> |
if (dp->v.kid->type == FUNC) |
774 |
> |
return(dp->type == ':'); |
775 |
> |
else |
776 |
> |
return(0); /* don't identify masked library functions */ |
777 |
> |
if ((lp = ep->v.ln->lib) != NULL) |
778 |
|
return(lp->atyp == ':'); |
779 |
|
return(0); |
780 |
|
} |
762 |
– |
#endif |
763 |
– |
#endif |