For now, Object protocol methods are (mostly) thin wrapper of matching vm functions. Because we don't need to have duplicated functions for same features, they need to be moved from vm to object protocol functions.

• vm path: vm/src/vm.rs
• object protocol path: vm/src/protocol/object.rs

The matching vm functions are easy to find because object methods are calling it.

• get_attr Relocate vm.get_attribute to obj.get_attr #3331
• set_attr Relocate vm.set_attr to obj.set_attr #3338
• del_attr Relocate vm.del_attr to obj.del_attr #3341
• rich_compare Relocate vm.rich_compare to obj.rich_compare #3347
• repr Relocate vm.to_repr to object.repr #3364
• str Relocate vm.to_str to obj.str #3349
• is_subclass Relocate vm.issubclass to obj.is_subclass #3345
• is_instance Relocate vm.isinstance to obj.is_instance #3344
• hash Relocate vm._hash to obj.hash #3342
• length Relocate vm.obj_len to obj.length #3343

Becasue relocating each function will cause many code editing, every new PR for each function is recommended for easier review.

Reference:

• Object protocol #3306: The original patch to add object protocol