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#include <stdio.h>

#include <stdlib.h>

#include "../../objc-obj-c++-shared/runtime.h"

/* The following header, together with the implementation included below,

   emulate functionality provided by the GNU runtime but not available from

   the NeXT runtime.  */

#include "../../objc-obj-c++-shared/objc-test-suite-next-encode-assist.h"

#if defined(__NEXT_RUNTIME__) && !defined(NEXT_OBJC_USE_NEW_INTERFACE)

void print_ivars (Class class)

{

  struct objc_ivar_list* ivars = class->ivars;

  int i;

  for (i = 0; i < ivars->ivar_count; i++) {

    struct objc_ivar *ivar = &(ivars->ivar_list[i]);

    printf ("ivar '%s', type '%s', offset %d\n",

            ivar->ivar_name, ivar->ivar_type, ivar->ivar_offset);

  }

}

void compare_structures (Class class, const char* type)

{

  struct objc_struct_layout layout;

  struct objc_ivar_list* ivars = class->ivars;

  int i = 0;

  int position;

  objc_layout_structure (type, &layout);

  while (objc_layout_structure_next_member (&layout))

    {

      struct objc_ivar *ivar;

      const char *ivar_type;

      if (i > ivars->ivar_count)

        {

          printf ("too many ivars in type %s, layout = %s\n",

                  type, layout.type);

          exit (1);

        }

      ivar = &(ivars->ivar_list[i]);

      objc_layout_structure_get_info (&layout, &position, NULL, &ivar_type);

      printf ("real ivar '%s' offset %d\n",

              ivar->ivar_name, ivar->ivar_offset);

      printf ("computed type '%s' offset %d\n", ivar_type, position);

      if (position != ivar->ivar_offset)

        {

          printf ("offset %d and computed position %d don't match on ivar '%s'"

                  " (i = %d)\n",

                  ivar->ivar_offset, position, ivar->ivar_name, i);

          exit (1);

        }

      i++;

    }

  printf ("%d ivars checked\n", i);

}

#else

void print_ivars (Class class)

{

  unsigned int count, i;

  Ivar *list = class_copyIvarList (class, &count);

  for (i = 0; i < count; i++) {

    printf ("ivar '%s', type '%s', offset %ud\n",

            ivar_getName (list[i]),

            ivar_getTypeEncoding (list[i]),

            (unsigned int)ivar_getOffset (list[i]));

  }

}

void compare_structures (Class class, const char* type)

{

  struct objc_struct_layout layout;

  unsigned int count;

  Ivar *list = class_copyIvarList (class, &count);

  int i = 0;

  int position;

  objc_layout_structure (type, &layout);

  while (objc_layout_structure_next_member (&layout))

    {

      const char *ivar_type;

      if (i > count)

        {

          printf ("too many ivars in type %s, layout = %s\n",

                  type, layout.type);

          exit (1);

        }

      objc_layout_structure_get_info (&layout, &position, NULL, &ivar_type);

      printf ("real ivar '%s' offset %ud\n",

              ivar_getName (list[i]), (unsigned int)ivar_getOffset (list[i]));

      printf ("computed type '%s' offset %d\n", ivar_type, position);

      if ((unsigned int)position != (unsigned int)ivar_getOffset (list[i]))

        {

          printf ("offset %ud and computed position %d don't match on ivar '%s'"

                  " (i = %d)\n",

                  (unsigned int)ivar_getOffset (list[i]), position, ivar_getName (list[i]), i);

          exit (1);

        }

      i++;

    }

  printf ("%d ivars checked\n", i);

}

#endif

int main ()

{

  struct class_vars

    {

      @defs (MyObject);

    };

  int size1, size2;

  Class class = objc_getClass ("MyObject");

  printf ("type = %s\n", @encode (struct class_vars));

  print_ivars (class);

  compare_structures (class, @encode(struct class_vars));

  if ((size1 = objc_sizeof_type (@encode(struct class_vars)))

      != (size2 = sizeof (struct class_vars)))

    {

      printf ("sizes don't match (computed %d, exact %d)\n", size1, size2);

      abort ();

    }

  return 0;

}

#include "../../objc-obj-c++-shared/objc-test-suite-next-encode-assist-impl.h"