compiler/arossupport/libnexttagitem.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <proto/arossupport.h>
   7
   8 struct TagItem *LibNextTagItem(struct TagItem **tagListPtr)
   9 {
  10     if (!(*tagListPtr))
  11         return NULL;
  12
  13     while(1)
  14     {
  15         switch(((*tagListPtr)->ti_Tag))
  16         {
  17             case TAG_MORE:
  18                 if (!((*tagListPtr) = (struct TagItem *)(*tagListPtr)->ti_Data))
  19                     return NULL;
  20                 continue;
  21
  22             case TAG_IGNORE:
  23                 break;
  24
  25             case TAG_END:
  26                 (*tagListPtr) = 0;
  27                 return NULL;
  28
  29             case TAG_SKIP:
  30                 (*tagListPtr) += (*tagListPtr)->ti_Data + 1;
  31                 continue;
  32
  33             default:
  34                 return (*tagListPtr)++;
  35
  36         }
  37
  38         (*tagListPtr)++;
  39     }
  40 }