gnu/dist/gcc4/gcc/testsuite/objc/execute/bf-common.h

   1 #ifndef __NEXT_RUNTIME__
   2 #include <objc/encoding.h>
   3 #endif
   4 #include "next_mapping.h"
   5
   6 void print_ivars (Class class)
   7 {
   8   struct objc_ivar_list* ivars = class->ivars;
   9   int i;
  10
  11   for (i = 0; i < ivars->ivar_count; i++) {
  12     struct objc_ivar *ivar = &(ivars->ivar_list[i]);
  13     printf ("ivar '%s', type '%s', offset %d\n",
  14             ivar->ivar_name, ivar->ivar_type, ivar->ivar_offset);
  15   }
  16 }
  17
  18 void compare_structures (Class class, const char* type)
  19 {
  20   struct objc_struct_layout layout;
  21   struct objc_ivar_list* ivars = class->ivars;
  22   int i = 0;
  23   int position;
  24
  25   objc_layout_structure (type, &layout);
  26
  27   while (objc_layout_structure_next_member (&layout))
  28     {
  29       struct objc_ivar *ivar;
  30       const char *ivar_type;
  31
  32       if (i > ivars->ivar_count)
  33         {
  34           printf ("too many ivars in type %s, layout = %s\n",
  35                   type, layout.type);
  36           exit (1);
  37         }
  38
  39       ivar = &(ivars->ivar_list[i]);
  40       objc_layout_structure_get_info (&layout, &position, NULL, &ivar_type);
  41       printf ("real ivar '%s' offset %d\n",
  42               ivar->ivar_name, ivar->ivar_offset);
  43       printf ("computed type '%s' offset %d\n", ivar_type, position);
  44       if (position != ivar->ivar_offset)
  45         {
  46           printf ("offset %d and computed position %d don't match on ivar '%s'"
  47                   " (i = %d)\n",
  48                   ivar->ivar_offset, position, ivar->ivar_name, i);
  49           exit (1);
  50         }
  51       i++;
  52     }
  53
  54   printf ("%d ivars checked\n", i);
  55 }
  56
  57 int main ()
  58 {
  59   struct class_vars
  60     {
  61       @defs (MyObject);
  62     };
  63   int size1, size2;
  64   Class class = objc_get_class ("MyObject");
  65
  66   printf ("type = %s\n", @encode (struct class_vars));
  67   print_ivars (class);
  68
  69   compare_structures (class, @encode(struct class_vars));
  70   if ((size1 = objc_sizeof_type (@encode(struct class_vars)))
  71       != (size2 = sizeof (struct class_vars)))
  72     {
  73       printf ("sizes don't match (computed %d, exact %d)\n", size1, size2);
  74       abort ();
  75     }
  76
  77   exit (0);
  78 }