1 /* 2 * Copyright 2016 Google Inc. All Rights Reserved. 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 com.google.turbine.binder.bound; 18 19 import static com.google.common.base.MoreObjects.firstNonNull; 20 21 import com.google.common.collect.ImmutableSet; 22 import com.google.turbine.binder.sym.ClassSymbol; 23 import com.google.turbine.model.TurbineElementType; 24 import java.lang.annotation.RetentionPolicy; 25 import java.util.EnumSet; 26 import org.jspecify.annotations.Nullable; 27 28 /** 29 * Annotation metadata, e.g. from {@link java.lang.annotation.Target}, {@link 30 * java.lang.annotation.Retention}, and {@link java.lang.annotation.Repeatable}. 31 */ 32 public class AnnotationMetadata { 33 34 public static final ImmutableSet<TurbineElementType> DEFAULT_TARGETS = getDefaultElements(); 35 getDefaultElements()36 private static ImmutableSet<TurbineElementType> getDefaultElements() { 37 EnumSet<TurbineElementType> values = EnumSet.allOf(TurbineElementType.class); 38 values.remove(TurbineElementType.TYPE_PARAMETER); 39 values.remove(TurbineElementType.TYPE_USE); 40 return ImmutableSet.copyOf(values); 41 } 42 43 private final RetentionPolicy retention; 44 private final ImmutableSet<TurbineElementType> target; 45 private final @Nullable ClassSymbol repeatable; 46 AnnotationMetadata( @ullable RetentionPolicy retention, @Nullable ImmutableSet<TurbineElementType> annotationTarget, @Nullable ClassSymbol repeatable)47 public AnnotationMetadata( 48 @Nullable RetentionPolicy retention, 49 @Nullable ImmutableSet<TurbineElementType> annotationTarget, 50 @Nullable ClassSymbol repeatable) { 51 this.retention = firstNonNull(retention, RetentionPolicy.CLASS); 52 this.target = firstNonNull(annotationTarget, DEFAULT_TARGETS); 53 this.repeatable = repeatable; 54 } 55 56 /** The retention policy specified by the {@code @Retention} meta-annotation. */ retention()57 public RetentionPolicy retention() { 58 return retention; 59 } 60 61 /** Target element types specified by the {@code @Target} meta-annotation. */ target()62 public ImmutableSet<TurbineElementType> target() { 63 return target; 64 } 65 66 /** The container annotation for {@code @Repeated} annotations. */ repeatable()67 public @Nullable ClassSymbol repeatable() { 68 return repeatable; 69 } 70 } 71