--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# 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
+ type T: K
+ type U: T
+ fun check(o: Object)
+ do
+ o.output
+ '<'.output
+ 'T'.output
+ (o isa T).output
+ o.output
+ '<'.output
+ 'U'.output
+ (o isa U).output
+ end
+ fun check2(o: T)
+ do
+ o.output
+ '<'.output
+ 'T'.output
+ '\n'.output
+ end
+ fun check3(o: U)
+ do
+ o.output
+ '<'.output
+ 'U'.output
+ '\n'.output
+ end
+end
+class B
+ super A
+ redef type T: L
+end
+class J
+ redef fun output do 'J'.output
+end
+class K
+ super J
+ redef fun output do 'K'.output
+end
+class L
+ super K
+ redef fun output do 'L'.output
+end
+
+var a = new A
+a.check(new J)
+a.check(new K)
+a.check(new L)
+#alt1#a.check2(new J) # Static error
+a.check2(new K)
+a.check2(new L)
+#alt2#a.check3(new J) # Static error
+a.check3(new K)
+a.check3(new L)
+var b = new B
+b.check(new J)
+b.check(new K)
+b.check(new L)
+#alt3#b.check2(new J) # Static error
+#alt4#b.check2(new K) # Static error
+b.check2(new L)
+#alt5#b.check3(new J) # Static error
+#alt6#b.check3(new K) # Static error
+b.check3(new L)
+var ab: A = new B
+ab.check(new J)
+ab.check(new K)
+ab.check(new L)
+#alt7#ab.check2(new J) # Static error
+#alt8#ab.check2(new K) # Dynamic error
+ab.check2(new L)
+#alt9#ab.check3(new J) # Static error
+#alt10#ab.check3(new K) # Dynamic error
+ab.check3(new L)
nitlanguage / nit.git / commitdiff