1 /*
2  * Copyright (C) 2021 The Android Open Source Project
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.android.annotationvisitor;
18 
19 import java.util.Map;
20 import java.util.HashMap;
21 
22 import org.apache.bcel.classfile.AnnotationEntry;
23 import org.apache.bcel.classfile.ElementValuePair;
24 
25 
26 /**
27  * Base class for an annotation handler, which handle individual annotations on
28  * class members.
29  */
30 public abstract class AnnotationHandler {
handleAnnotation(AnnotationEntry annotation, AnnotationContext context)31     protected abstract void handleAnnotation(AnnotationEntry annotation, AnnotationContext context);
32 
stringifyAnnotationProperties(AnnotationEntry annotation)33     protected Map<String, String> stringifyAnnotationProperties(AnnotationEntry annotation) {
34         Map<String, String> content = new HashMap<String, String>();
35 
36         // Stringify all annotation properties.
37         for (ElementValuePair prop : annotation.getElementValuePairs()) {
38             content.put(prop.getNameString(), prop.getValue().stringifyValue());
39         }
40 
41         return content;
42     }
43 }
44