java/com/android/annotationvisitor/AnnotationHandler.java

/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * 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.android.annotationvisitor;

import java.util.Map;
import java.util.HashMap;

import org.apache.bcel.classfile.AnnotationEntry;
import org.apache.bcel.classfile.ElementValuePair;


/**
 * Base class for an annotation handler, which handle individual annotations on
 * class members.
 */
public abstract class AnnotationHandler {
    protected abstract void handleAnnotation(AnnotationEntry annotation, AnnotationContext context);

    protected Map<String, String> stringifyAnnotationProperties(AnnotationEntry annotation) {
        Map<String, String> content = new HashMap<String, String>();

        // Stringify all annotation properties.
        for (ElementValuePair prop : annotation.getElementValuePairs()) {
            content.put(prop.getNameString(), prop.getValue().stringifyValue());
        }

        return content;
    }
}