| 38 |
|
|
| 39 |
|
extern char *ecalloc(), *savestr(), *strcpy(); |
| 40 |
|
|
| 41 |
+ |
static int hash(); |
| 42 |
+ |
|
| 43 |
|
static double dvalue(); |
| 44 |
|
|
| 45 |
|
long eclock = -1; /* value storage timer */ |
| 46 |
|
|
| 47 |
< |
static char context[MAXWORD]; /* current context path */ |
| 47 |
> |
static char context[MAXWORD+1]; /* current context path */ |
| 48 |
|
|
| 49 |
|
static VARDEF *hashtbl[NHASH]; /* definition list */ |
| 50 |
|
static int htndx; /* index for */ |
| 197 |
|
if (*ctx != CNTXMARK) |
| 198 |
|
*cpp++ = CNTXMARK; /* make sure there's a mark */ |
| 199 |
|
do { |
| 200 |
< |
if (cpp >= context+MAXWORD-1) { |
| 201 |
< |
*cpp = '\0'; |
| 200 |
< |
wputs(context); |
| 201 |
< |
wputs(": context path too long\n"); |
| 202 |
< |
return(NULL); |
| 203 |
< |
} |
| 200 |
> |
if (cpp >= context+MAXWORD) |
| 201 |
> |
break; /* just copy what we can */ |
| 202 |
|
if (isid(*ctx)) |
| 203 |
|
*cpp++ = *ctx++; |
| 204 |
|
else { |
| 215 |
|
register char *nam; |
| 216 |
|
int lvl; |
| 217 |
|
{ |
| 218 |
< |
static char nambuf[MAXWORD]; |
| 219 |
< |
register char *cp = nambuf, *cpp = context; |
| 220 |
< |
/* check for explicit global */ |
| 218 |
> |
static char nambuf[MAXWORD+1]; |
| 219 |
> |
register char *cp = nambuf, *cpp; |
| 220 |
> |
/* check for explicit local */ |
| 221 |
|
if (*nam == CNTXMARK) |
| 222 |
< |
return(lvl > 0 ? NULL : nam+1); |
| 223 |
< |
/* check for repeat call */ |
| 224 |
< |
if (nam == nambuf) |
| 225 |
< |
return(lvl > 0 ? NULL : nambuf); |
| 222 |
> |
if (lvl > 0) /* only action is to refuse search */ |
| 223 |
> |
return(NULL); |
| 224 |
> |
else |
| 225 |
> |
nam++; |
| 226 |
> |
else if (nam == nambuf) /* check for repeat call */ |
| 227 |
> |
return(lvl > 0 ? NULL : nam); |
| 228 |
|
/* copy name to static buffer */ |
| 229 |
|
while (*nam) { |
| 230 |
< |
if (cp >= nambuf+MAXWORD-1) |
| 230 |
> |
if (cp >= nambuf+MAXWORD) |
| 231 |
|
goto toolong; |
| 232 |
< |
if ((*cp++ = *nam++) == CNTXMARK) |
| 233 |
< |
cpp = NULL; /* flag a qualified name */ |
| 232 |
> |
*cp++ = *nam++; |
| 233 |
|
} |
| 234 |
< |
if (cpp == NULL) { |
| 234 |
> |
/* check for explicit global */ |
| 235 |
> |
if (cp > nambuf && cp[-1] == CNTXMARK) { |
| 236 |
|
if (lvl > 0) |
| 237 |
< |
return(NULL); /* no higher level */ |
| 238 |
< |
if (cp[-1] == CNTXMARK) { |
| 239 |
< |
cp--; cpp = context; /* current context explicitly */ |
| 240 |
< |
} else |
| 241 |
< |
cpp = ""; /* else fully qualified */ |
| 242 |
< |
} else /* else skip the requested levels */ |
| 243 |
< |
while (lvl-- > 0) { |
| 244 |
< |
if (!*cpp) |
| 245 |
< |
return(NULL); /* return NULL if past global level */ |
| 246 |
< |
while (*++cpp && *cpp != CNTXMARK) |
| 247 |
< |
; |
| 248 |
< |
} |
| 237 |
> |
return(NULL); |
| 238 |
> |
*--cp = '\0'; |
| 239 |
> |
return(nambuf); /* already qualified */ |
| 240 |
> |
} |
| 241 |
> |
cpp = context; /* else skip the requested levels */ |
| 242 |
> |
while (lvl-- > 0) { |
| 243 |
> |
if (!*cpp) |
| 244 |
> |
return(NULL); /* return NULL if past global level */ |
| 245 |
> |
while (*++cpp && *cpp != CNTXMARK) |
| 246 |
> |
; |
| 247 |
> |
} |
| 248 |
|
while (*cpp) { /* copy context to static buffer */ |
| 249 |
< |
if (cp >= nambuf+MAXWORD-1) |
| 249 |
> |
if (cp >= nambuf+MAXWORD) |
| 250 |
|
goto toolong; |
| 251 |
|
*cp++ = *cpp++; |
| 252 |
|
} |
| 254 |
– |
*cp = '\0'; |
| 255 |
– |
return(nambuf); /* return qualified name */ |
| 253 |
|
toolong: |
| 254 |
|
*cp = '\0'; |
| 255 |
< |
eputs(nambuf); |
| 259 |
< |
eputs(": name too long\n"); |
| 260 |
< |
quit(1); |
| 255 |
> |
return(nambuf); /* return qualified name */ |
| 256 |
|
} |
| 257 |
|
|
| 258 |
|
|
| 260 |
|
register char *qn; |
| 261 |
|
{ |
| 262 |
|
while (*qn && *qn != CNTXMARK) /* find context mark */ |
| 263 |
< |
; |
| 263 |
> |
qn++; |
| 264 |
|
return(!strcmp(qn, context)); |
| 265 |
|
} |
| 266 |
|
|
| 400 |
|
dnext() /* return pointer to next definition */ |
| 401 |
|
{ |
| 402 |
|
register EPNODE *ep; |
| 403 |
+ |
register char *nm; |
| 404 |
|
|
| 405 |
|
while (htndx < NHASH) { |
| 406 |
|
if (htpos == NULL) |
| 407 |
|
htpos = hashtbl[htndx++]; |
| 408 |
|
while (htpos != NULL) { |
| 409 |
|
ep = htpos->def; |
| 410 |
+ |
nm = htpos->name; |
| 411 |
|
htpos = htpos->next; |
| 412 |
< |
if (ep != NULL) |
| 412 |
> |
if (ep != NULL && incontext(nm)) |
| 413 |
|
return(ep); |
| 414 |
|
} |
| 415 |
|
} |
| 539 |
|
{ |
| 540 |
|
register EPNODE *ep1, *ep2; |
| 541 |
|
|
| 542 |
< |
if (!isalpha(nextc)) |
| 542 |
> |
if (!isalpha(nextc) && nextc != CNTXMARK) |
| 543 |
|
syntax("illegal variable name"); |
| 544 |
|
|
| 545 |
|
ep1 = newnode(); |
