| /* |
| * Copyright 2013 Google LLC |
| * |
| * 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.auto.factory.processor; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| import java.util.List; |
| import javax.lang.model.element.AnnotationValue; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.type.DeclaredType; |
| import javax.lang.model.type.TypeMirror; |
| import javax.lang.model.util.ElementFilter; |
| import javax.lang.model.util.SimpleAnnotationValueVisitor6; |
| import javax.lang.model.util.SimpleTypeVisitor6; |
| |
| final class AnnotationValues { |
| private AnnotationValues() {} |
| |
| static boolean asBoolean(AnnotationValue value) { |
| return value.accept( |
| new SimpleAnnotationValueVisitor6<Boolean, Void>() { |
| @Override protected Boolean defaultAction(Object o, Void p) { |
| throw new IllegalArgumentException(); |
| } |
| |
| @Override public Boolean visitBoolean(boolean b, Void p) { |
| return b; |
| } |
| }, null); |
| } |
| |
| static TypeElement asType(AnnotationValue value) { |
| return value.accept( |
| new SimpleAnnotationValueVisitor6<TypeElement, Void>() { |
| @Override protected TypeElement defaultAction(Object o, Void p) { |
| throw new IllegalArgumentException(); |
| } |
| |
| @Override public TypeElement visitType(TypeMirror t, Void p) { |
| return t.accept( |
| new SimpleTypeVisitor6<TypeElement, Void>() { |
| @Override |
| protected TypeElement defaultAction(TypeMirror e, Void p) { |
| throw new AssertionError(); |
| } |
| |
| @Override |
| public TypeElement visitDeclared(DeclaredType t, Void p) { |
| return Iterables.getOnlyElement(ElementFilter.typesIn( |
| ImmutableList.of(t.asElement()))); |
| } |
| }, null); |
| } |
| }, null); |
| } |
| |
| static ImmutableList<? extends AnnotationValue> asList(AnnotationValue value) { |
| return value.accept( |
| new SimpleAnnotationValueVisitor6<ImmutableList<? extends AnnotationValue>, Void>() { |
| @Override |
| protected ImmutableList<? extends AnnotationValue> defaultAction(Object o, Void p) { |
| throw new IllegalArgumentException(); |
| } |
| |
| @Override |
| public ImmutableList<? extends AnnotationValue> visitArray( |
| List<? extends AnnotationValue> vals, Void p) { |
| return ImmutableList.copyOf(vals); |
| } |
| }, null); |
| } |
| } |