def __init__(self, primitives):
vau = W_Vau(self.vau)
global_frame = self.bind(symbol("vau"), vau)
global_frame.comma(w_list([w_list([symbol("operate"), W_Operate()])]))
global_frame.comma(w_list([w_list([symbol("eval"), W_Eval()])]))
primitives["lookup"] = self.lookup
for name in primitives:
prim = W_Primitive(primitives[name])
global_frame.comma(w_list([w_list([symbol(name), prim])]))
self.global_env = w_list([global_frame])
