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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"
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