Ruby

iv_index_tbl = ROBJECT_IV_INDEX_TBL(obj);

if (!iv_index_tbl) break;

if (!st_lookup(iv_index_tbl, id, &index)) break;

val = ptr[index];

if (val != Qundef)

return val;

ivar_extended = 1;

}

len = ROBJECT_NUMIV(obj);

VALUE *ptr = ROBJECT_IVPTR(obj);

if (index < ROBJECT_EMBED_LEN_MAX) {

RBASIC(obj)->flags |= ROBJECT_EMBED;

VALUE *newptr;

long newsize = (index+1) + (index+1)/4; /* (index+1)*1.25 */

if (!ivar_extended &&

newsize = iv_index_tbl->num_entries;

}

if (RBASIC(obj)->flags & ROBJECT_EMBED) {

iv_index_tbl = ROBJECT_IV_INDEX_TBL(obj);

if (!iv_index_tbl) break;

if (!st_lookup(iv_index_tbl, id, &index)) break;

val = ROBJECT_IVPTR(obj)[index];

if (val != Qundef)

return Qtrue;

iv_index_tbl = ROBJECT_IV_INDEX_TBL(obj);

if (!iv_index_tbl) break;

if (!st_lookup(iv_index_tbl, id, &index)) break;

val = ROBJECT_IVPTR(obj)[index];

if (val != Qundef) {

ROBJECT_IVPTR(obj)[index] = Qundef;