1 /* 2 * Copyright 2021 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 CastWildcardToTypeVariable { x(NullableSupplier<?> supplier)21 <T> T x(NullableSupplier<?> supplier) { 22 // jspecify_nullness_mismatch 23 return (T) supplier.get(); 24 } 25 26 interface NullableSupplier<T extends @Nullable Object> { get()27 T get(); 28 } 29 x(NonNullSupplier<?> supplier)30 <T> T x(NonNullSupplier<?> supplier) { 31 return (T) supplier.get(); 32 } 33 34 interface NonNullSupplier<T> { get()35 T get(); 36 } 37 } 38