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 NullCheck { 22 // TODO(cpovirk): Soften README to permit flow-sensitive samples in moderation. x1(@ullnessUnspecified Object o)23 Object x1(@NullnessUnspecified Object o) { 24 if (o != null) { 25 return o; 26 } else { 27 // jspecify_nullness_mismatch 28 return o; 29 } 30 } 31 x2(@ullable Object o)32 Object x2(@Nullable Object o) { 33 if (o != null) { 34 return o; 35 } else { 36 // jspecify_nullness_mismatch 37 return o; 38 } 39 } 40 x4(@ullnessUnspecified Object o)41 Object x4(@NullnessUnspecified Object o) { 42 if (o == null) { 43 // jspecify_nullness_mismatch 44 return o; 45 } else { 46 return o; 47 } 48 } 49 x5(@ullable Object o)50 Object x5(@Nullable Object o) { 51 if (o == null) { 52 // jspecify_nullness_mismatch 53 return o; 54 } else { 55 return o; 56 } 57 } 58 } 59