var recv = v.expr(self.n_expr)
if recv == null then return null
- if status == 0 then optimize(v, recv.mtype, self.cast_type.as(not null))
+ optimize(v, recv.mtype, self.cast_type.as(not null))
var mtype = v.unanchor_type(self.cast_type.as(not null))
# If this test can be optimized, directly call appropriate subtyping methods
return
end
- if not target.mclass.loaded then return
+ if not target.mclass.abstract_loaded then return
+
+ # If the value is positive, the target class has an invariant position in source's structures
+ var value = source.mclass.get_position_methods(target.mclass)
- # We use perfect hashing
- status = 2
+ if value > 0 then
+ # `value - 2` is the position of the target identifier in source vtable
+ position = value - 2
+ status = 1
+ else
+ # We use perfect hashing
+ status = 2
+ end
id = target.mclass.vtable.id
end
end
var recv = v.expr(self.n_expr)
if recv == null then return null
- if status == 0 then optimize(v, recv.mtype, self.mtype.as(not null))
+ optimize(v, recv.mtype, self.mtype.as(not null))
var mtype = self.mtype.as(not null)
var amtype = v.unanchor_type(mtype)
if not target.mclass.loaded then return
- # Try to get the position of the target type in source's structures
- var value = source.mclass.positions_methods.get_or_null(target.mclass)
+ # If the value is positive, the target class has an invariant position in source's structures
+ var value = source.mclass.get_position_methods(target.mclass)
- # We use perfect hashing
- status = 2
+ if value > 0 then
+ # `value - 2` is the position of the target identifier in source vtable
+ position = value - 2
+ status = 1
+ else
+ # We use perfect hashing
+ status = 2
+ end
id = target.mclass.vtable.id
end
end