{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"lhs"}]}
                        lhs = self.context.new_cast(self.location, lhs, unsigned_type);
                        let unsigned_type = a_type.to_unsigned(self.cx);
                        rhs = self.context.new_cast(self.location, rhs, unsigned_type);