1 /*
2  * Copyright 2012, Google Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are
7  * met:
8  *
9  *     * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *     * Redistributions in binary form must reproduce the above
12  * copyright notice, this list of conditions and the following disclaimer
13  * in the documentation and/or other materials provided with the
14  * distribution.
15  *     * Neither the name of Google Inc. nor the names of its
16  * contributors may be used to endorse or promote products derived from
17  * this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 package org.jf.dexlib2.immutable;
33 
34 import com.google.common.collect.ImmutableSet;
35 import org.jf.dexlib2.base.BaseAnnotation;
36 import org.jf.dexlib2.iface.Annotation;
37 import org.jf.dexlib2.iface.AnnotationElement;
38 import org.jf.util.ImmutableConverter;
39 import org.jf.util.ImmutableUtils;
40 
41 import javax.annotation.Nonnull;
42 import javax.annotation.Nullable;
43 import java.util.Collection;
44 
45 public class ImmutableAnnotation extends BaseAnnotation {
46     protected final int visibility;
47     @Nonnull protected final String type;
48     @Nonnull protected final ImmutableSet<? extends ImmutableAnnotationElement> elements;
49 
ImmutableAnnotation(int visibility, @Nonnull String type, @Nullable Collection<? extends AnnotationElement> elements)50     public ImmutableAnnotation(int visibility,
51                                @Nonnull String type,
52                                @Nullable Collection<? extends AnnotationElement> elements) {
53         this.visibility = visibility;
54         this.type = type;
55         this.elements = ImmutableAnnotationElement.immutableSetOf(elements);
56     }
57 
ImmutableAnnotation(int visibility, @Nonnull String type, @Nullable ImmutableSet<? extends ImmutableAnnotationElement> elements)58     public ImmutableAnnotation(int visibility,
59                                @Nonnull String type,
60                                @Nullable ImmutableSet<? extends ImmutableAnnotationElement> elements) {
61         this.visibility = visibility;
62         this.type = type;
63         this.elements = ImmutableUtils.nullToEmptySet(elements);
64     }
65 
of(Annotation annotation)66     public static ImmutableAnnotation of(Annotation annotation) {
67         if (annotation instanceof  ImmutableAnnotation) {
68             return (ImmutableAnnotation)annotation;
69         }
70         return new ImmutableAnnotation(
71                 annotation.getVisibility(),
72                 annotation.getType(),
73                 annotation.getElements());
74     }
75 
getVisibility()76     @Override public int getVisibility() { return visibility; }
getType()77     @Nonnull @Override public String getType() { return type; }
getElements()78     @Nonnull @Override public ImmutableSet<? extends ImmutableAnnotationElement> getElements() { return elements; }
79 
80     @Nonnull
immutableSetOf(@ullable Iterable<? extends Annotation> list)81     public static ImmutableSet<ImmutableAnnotation> immutableSetOf(@Nullable Iterable<? extends Annotation> list) {
82         return CONVERTER.toSet(list);
83     }
84 
85     private static final ImmutableConverter<ImmutableAnnotation, Annotation> CONVERTER =
86             new ImmutableConverter<ImmutableAnnotation, Annotation>() {
87                 @Override
88                 protected boolean isImmutable(@Nonnull Annotation item) {
89                     return item instanceof ImmutableAnnotation;
90                 }
91 
92                 @Nonnull
93                 @Override
94                 protected ImmutableAnnotation makeImmutable(@Nonnull Annotation item) {
95                     return ImmutableAnnotation.of(item);
96                 }
97             };
98 }
99