def func(interp, w_arg, w_rcvr):
w_arg_class = w_arg.getclass()
w_rcvr_class = w_rcvr.getclass()
# We should fail if:
# 1. Rcvr or arg are SmallIntegers
# XXX this is wrong too
if (w_arg_class == classtable.w_SmallInteger
or w_rcvr_class == classtable.w_SmallInteger):
raise PrimitiveFailedError()
# 2. Rcvr is an instance of a compact class and argument isn't
# or vice versa XXX we don't have to fail here, but for squeak it's a problem
# 3. Format of rcvr is different from format of argument
raise PrimitiveNotYetWrittenError() # XXX needs to work in the shadows
if w_arg_class.format != w_rcvr_class.format:
raise PrimitiveFailedError()
# Fail when argument class is fixed and rcvr's size differs from the
# size of an instance of the arg
if w_arg_class.instsize() != w_rcvr_class.instsize():
raise PrimitiveFailedError()
w_rcvr.w_class = w_arg.w_class
def func(interp, w_rcvr):
raise PrimitiveNotYetWrittenError()
def func(interp, w_class):
# This primitive returns some instance of the class on the stack.
# Not sure quite how to do this; maintain a weak list of all
# existing instances or something?
raise PrimitiveNotYetWrittenError()
def func(interp, w_obj):
# This primitive is used to iterate through all instances of a class:
# it returns the "next" instance after w_obj.
raise PrimitiveNotYetWrittenError()
def func(interp, w_obj1, w_obj2):
# This primitive seems to resize the stack. I don't think this is
# really relevant in our implementation.
raise PrimitiveNotYetWrittenError()