ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/Development/ray/src/common/caldefn.c
(Generate patch)

Comparing ray/src/common/caldefn.c (file contents):
Revision 1.7 by greg, Fri Jul 20 08:30:23 1990 UTC vs.
Revision 1.8 by greg, Tue Apr 23 12:59:33 1991 UTC

# Line 18 | Line 18 | static char SCCSid[] = "$SunId$ LBL";
18   *  11/16/88  Added VARDEF structure for hard linking.
19   *
20   *  5/31/90  Added conditional compile (REDEFW) for redefinition warning.
21 + *
22 + *  4/23/91  Added ':' defines for constant expressions (RCONST)
23   */
24  
25   #include  <stdio.h>
# Line 105 | Line 107 | EPNODE  *ep;
107   }
108  
109  
110 < varset(vname, val)              /* set a variable's value */
110 > varset(vname, assign, val)      /* set a variable's value */
111   char  *vname;
112 + int  assign;
113   double  val;
114   {
115      register EPNODE  *ep1, *ep2;
# Line 115 | Line 118 | double  val;
118          ep2 = ep1->v.kid->sibling;
119          if (ep2->type == NUM) {
120              ep2->v.num = val;
121 +            ep1->type = assign;
122              return;
123          }
124      }
125                                          /* hand build definition */
126      ep1 = newnode();
127 <    ep1->type = '=';
127 >    ep1->type = assign;
128      ep2 = newnode();
129      ep2->type = SYM;
130      ep2->v.name = savestr(vname);
# Line 129 | Line 133 | double  val;
133      ep2->type = NUM;
134      ep2->v.num = val;
135      addekid(ep1, ep2);
136 <    dclear(vname);
136 >    dremove(vname);
137      dpush(ep1);
138   }
139  
140  
141 < dclear(name)                    /* delete all definitions of name */
141 > dclear(name)                    /* delete variable definitions of name */
142   char  *name;
143   {
144      register EPNODE  *ep;
145  
146 +    while ((ep = dpop(name)) != NULL) {
147 +        if (ep->type == ':') {
148 +            dpush(ep);          /* don't clear constants */
149 +            return;
150 +        }
151 +        epfree(ep);
152 +    }
153 + }
154 +
155 +
156 + dremove(name)                   /* delete all definitions of name */
157 + char  *name;
158 + {
159 +    register EPNODE  *ep;
160 +
161      while ((ep = dpop(name)) != NULL)
162          epfree(ep);
163   }
# Line 174 | Line 193 | dclearall()                    /* clear all definitions */
193  
194      for (i = 0; i < NHASH; i++)
195          for (vp = hashtbl[i]; vp != NULL; vp = vp->next)
196 <            dclear(vp->name);
196 >            dremove(vp->name);
197   #ifdef  OUTCHAN
198      for (ep = outchan; ep != NULL; ep = ep->sibling)
199          epfree(ep);
# Line 368 | Line 387 | loaddefn()                     /* load next definition */
387          ep = getdefn();
388   #ifdef  REDEFW
389          if (dlookup(dname(ep)) != NULL) {
390 <                dclear(dname(ep));
391 <                wputs(dname(ep));
390 >            dclear(dname(ep));
391 >            wputs(dname(ep));
392 >            if (dlookup(dname(ep)) == NULL)
393                  wputs(": redefined\n");
394 +            else
395 +                wputs(": redefined constant expression\n");
396          }
397 + #ifdef  FUNCTION
398 +        else if (ep->v.kid->type == FUNC &&
399 +                        liblookup(ep->v.kid->v.kid->v.name) != NULL) {
400 +            wputs(ep->v.kid->v.kid->v.name);
401 +            wputs(": redefined library function\n");
402 +        }
403 + #endif
404   #else
405          dclear(dname(ep));
406   #endif
# Line 387 | Line 416 | loaddefn()                     /* load next definition */
416  
417   EPNODE *
418   getdefn()                       /* A -> SYM = E1 */
419 +                                /*      SYM : E1 */
420                                  /*      FUNC(SYM,..) = E1 */
421 +                                /*      FUNC(SYM,..) : E1 */
422   {
423      register EPNODE  *ep1, *ep2;
424  
# Line 421 | Line 452 | getdefn()                      /* A -> SYM = E1 */
452          curfunc = NULL;
453   #endif
454  
455 <    if (nextc != '=')
456 <        syntax("'=' expected");
426 <    scan();
455 >    if (nextc != '=' && nextc != ':')
456 >        syntax("'=' or ':' expected");
457  
458      ep2 = newnode();
459 <    ep2->type = '=';
459 >    ep2->type = nextc;
460 >    scan();
461      addekid(ep2, ep1);
462 + #ifdef  RCONST
463 +    if (
464 + #ifdef  FUNCTION
465 +            ep1->type == SYM &&
466 + #endif
467 +            ep2->type == ':')
468 +        addekid(ep2, rconst(getE1()));
469 +    else
470 + #endif
471      addekid(ep2, getE1());
472  
473      if (
# Line 499 | Line 539 | EPNODE  *d;
539          return(ep1->v.num);                     /* return if number */
540      ep2 = ep1->sibling;                         /* check time */
541      if (ep2->v.tick < 0 || ep2->v.tick < eclock) {
542 <        ep2->v.tick = eclock;
542 >        ep2->v.tick = d->type == ':' ? 1L<<30 : eclock;
543          ep2 = ep2->sibling;
544          ep2->v.num = evalue(ep1);               /* needs new value */
545      } else

Diff Legend

– Removed lines
+ Added lines
< Changed lines (old)
> Changed lines (new)