1 /* 2 * Copyright 2022 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 19 @NullMarked 20 class ObjectAsSuperOfTypeVariable { 21 interface Supplier<T extends @Nullable Object> { get()22 T get(); 23 } 24 25 interface Receiver<T extends @Nullable Object> { accept(T t)26 void accept(T t); 27 } 28 pass(Supplier<T> s, Receiver<? super T> r)29 <T extends @Nullable Object> void pass(Supplier<T> s, Receiver<? super T> r) { 30 r.accept(s.get()); 31 } 32 passToAllPurposeReceiver(Supplier<T> s, Receiver<Object> r)33 <T extends @Nullable Object> void passToAllPurposeReceiver(Supplier<T> s, Receiver<Object> r) { 34 // jspecify_nullness_mismatch 35 pass(s, r); 36 } 37 } 38