1 /* 2 * Copyright 2020 The JSpecify Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 import org.jspecify.annotations.NullMarked; 17 import org.jspecify.annotations.Nullable; 18 import org.jspecify.annotations.NullnessUnspecified; 19 20 @NullMarked 21 class ContainmentExtends { x()22 void x() { 23 new Check<Lib<? extends Foo>, Lib<? extends Foo>>(); 24 25 // jspecify_nullness_not_enough_information 26 new Check<Lib<? extends Foo>, Lib<? extends @NullnessUnspecified Foo>>(); 27 28 // jspecify_nullness_mismatch 29 new Check<Lib<? extends Foo>, Lib<? extends @Nullable Foo>>(); 30 31 new Check<Lib<? extends @NullnessUnspecified Foo>, Lib<? extends Foo>>(); 32 33 // jspecify_nullness_not_enough_information 34 new Check<Lib<? extends @NullnessUnspecified Foo>, Lib<? extends @NullnessUnspecified Foo>>(); 35 36 // jspecify_nullness_not_enough_information 37 new Check<Lib<? extends @NullnessUnspecified Foo>, Lib<? extends @Nullable Foo>>(); 38 39 new Check<Lib<? extends @Nullable Foo>, Lib<? extends Foo>>(); 40 41 new Check<Lib<? extends @Nullable Foo>, Lib<? extends @NullnessUnspecified Foo>>(); 42 43 new Check<Lib<? extends @Nullable Foo>, Lib<? extends @Nullable Foo>>(); 44 } 45 46 interface Lib<T extends @Nullable Object> {} 47 48 interface Foo {} 49 50 static class Check<F extends @Nullable Object, A extends F> {} 51 } 52