1 /* 2 * Copyright (C) 2021 The Dagger 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 17 package dagger.internal.codegen.processingstep; 18 19 import static dagger.internal.codegen.xprocessing.XElements.closestEnclosingTypeElement; 20 21 import androidx.room.compiler.processing.XElement; 22 import androidx.room.compiler.processing.XTypeElement; 23 import dagger.internal.codegen.base.ClearableCache; 24 import dagger.internal.codegen.base.DaggerSuperficialValidation; 25 import dagger.internal.codegen.base.DaggerSuperficialValidation.ValidationException; 26 import java.util.HashMap; 27 import java.util.Map; 28 import java.util.Optional; 29 import javax.inject.Inject; 30 import javax.inject.Singleton; 31 32 /** Validates enclosing type elements in a round. */ 33 @Singleton 34 final class SuperficialValidator implements ClearableCache { 35 36 private final DaggerSuperficialValidation superficialValidation; 37 private final Map<XTypeElement, Optional<ValidationException>> validationExceptions = 38 new HashMap<>(); 39 40 @Inject SuperficialValidator(DaggerSuperficialValidation superficialValidation)41 SuperficialValidator(DaggerSuperficialValidation superficialValidation) { 42 this.superficialValidation = superficialValidation; 43 } 44 throwIfNearestEnclosingTypeNotValid(XElement element)45 void throwIfNearestEnclosingTypeNotValid(XElement element) { 46 Optional<ValidationException> validationException = 47 validationExceptions.computeIfAbsent( 48 closestEnclosingTypeElement(element), 49 this::validationExceptionsUncached); 50 51 if (validationException.isPresent()) { 52 throw validationException.get(); 53 } 54 } 55 validationExceptionsUncached(XTypeElement element)56 private Optional<ValidationException> validationExceptionsUncached(XTypeElement element) { 57 try { 58 superficialValidation.validateElement(element); 59 } catch (ValidationException validationException) { 60 return Optional.of(validationException); 61 } 62 return Optional.empty(); 63 } 64 65 @Override clearCache()66 public void clearCache() { 67 validationExceptions.clear(); 68 } 69 } 70