# This file is part of NIT ( http://www.nitlanguage.org ). # # Copyright 2006-2008 Jean Privat # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import kernel class A fun bar(a: Object) do a.output end redef fun output do 'A'.output end fun ret_test # see rterror_cov_ret do ret.output end fun ret: A do return self end init do end end class B special A redef fun bar(a: B) do a.output end redef fun output do 'B'.output end redef fun ret: B do return self end init do end end var a = new A var b = a b = new B b.bar(5)