1 /* 2 * Copyright (C) 2017 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; 18 19 import static dagger.internal.codegen.langmodel.Accessibility.isTypeAccessibleFrom; 20 21 import dagger.internal.codegen.langmodel.Accessibility; 22 import java.util.Collection; 23 import java.util.List; 24 import java.util.function.Predicate; 25 import javax.lang.model.element.AnnotationMirror; 26 import javax.lang.model.element.AnnotationValue; 27 import javax.lang.model.element.VariableElement; 28 import javax.lang.model.type.TypeMirror; 29 import javax.lang.model.util.SimpleAnnotationValueVisitor8; 30 31 final class MapKeyAccessibility extends SimpleAnnotationValueVisitor8<Boolean, Void> { 32 private final Predicate<TypeMirror> accessibilityChecker; 33 MapKeyAccessibility(Predicate<TypeMirror> accessibilityChecker)34 private MapKeyAccessibility(Predicate<TypeMirror> accessibilityChecker) { 35 this.accessibilityChecker = accessibilityChecker; 36 } 37 38 @Override visitAnnotation(AnnotationMirror annotation, Void aVoid)39 public Boolean visitAnnotation(AnnotationMirror annotation, Void aVoid) { 40 // The annotation type is not checked, as the generated code will refer to the @AutoAnnotation 41 // generated type which is always public 42 return visitValues(annotation.getElementValues().values()); 43 } 44 45 @Override visitArray(List<? extends AnnotationValue> values, Void aVoid)46 public Boolean visitArray(List<? extends AnnotationValue> values, Void aVoid) { 47 return visitValues(values); 48 } 49 visitValues(Collection<? extends AnnotationValue> values)50 private boolean visitValues(Collection<? extends AnnotationValue> values) { 51 return values.stream().allMatch(value -> value.accept(this, null)); 52 } 53 54 @Override visitEnumConstant(VariableElement enumConstant, Void aVoid)55 public Boolean visitEnumConstant(VariableElement enumConstant, Void aVoid) { 56 return accessibilityChecker.test(enumConstant.getEnclosingElement().asType()); 57 } 58 59 @Override visitType(TypeMirror type, Void aVoid)60 public Boolean visitType(TypeMirror type, Void aVoid) { 61 return accessibilityChecker.test(type); 62 } 63 64 @Override defaultAction(Object o, Void aVoid)65 protected Boolean defaultAction(Object o, Void aVoid) { 66 return true; 67 } 68 isMapKeyAccessibleFrom(AnnotationMirror annotation, String accessingPackage)69 static boolean isMapKeyAccessibleFrom(AnnotationMirror annotation, String accessingPackage) { 70 return new MapKeyAccessibility(type -> isTypeAccessibleFrom(type, accessingPackage)) 71 .visitAnnotation(annotation, null); 72 } 73 isMapKeyPubliclyAccessible(AnnotationMirror annotation)74 static boolean isMapKeyPubliclyAccessible(AnnotationMirror annotation) { 75 return new MapKeyAccessibility(Accessibility::isTypePubliclyAccessible) 76 .visitAnnotation(annotation, null); 77 } 78 } 79