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/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.turbine.binder.bound;
import static com.google.common.base.MoreObjects.firstNonNull;
import com.google.common.collect.ImmutableSet;
import com.google.turbine.binder.sym.ClassSymbol;
import com.google.turbine.model.TurbineElementType;
import java.lang.annotation.RetentionPolicy;
import java.util.EnumSet;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* Annotation metadata, e.g. from {@link java.lang.annotation.Target}, {@link
* java.lang.annotation.Retention}, and {@link java.lang.annotation.Repeatable}.
*/
public class AnnotationMetadata {
public static final ImmutableSet<TurbineElementType> DEFAULT_TARGETS = getDefaultElements();
private static ImmutableSet<TurbineElementType> getDefaultElements() {
EnumSet<TurbineElementType> values = EnumSet.allOf(TurbineElementType.class);
values.remove(TurbineElementType.TYPE_PARAMETER);
values.remove(TurbineElementType.TYPE_USE);
return ImmutableSet.copyOf(values);
}
private final RetentionPolicy retention;
private final ImmutableSet<TurbineElementType> target;
private final @Nullable ClassSymbol repeatable;
public AnnotationMetadata(
@Nullable RetentionPolicy retention,
@Nullable ImmutableSet<TurbineElementType> annotationTarget,
@Nullable ClassSymbol repeatable) {
this.retention = firstNonNull(retention, RetentionPolicy.CLASS);
this.target = firstNonNull(annotationTarget, DEFAULT_TARGETS);
this.repeatable = repeatable;
}
/** The retention policy specified by the {@code @Retention} meta-annotation. */
public RetentionPolicy retention() {
return retention;
}
/** Target element types specified by the {@code @Target} meta-annotation. */
public ImmutableSet<TurbineElementType> target() {
return target;
}
/** The container annotation for {@code @Repeated} annotations. */
public @Nullable ClassSymbol repeatable() {
return repeatable;
}
}
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