org.springframework.cglib.core.ClassNameReader.java Source code

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Here is the source code for org.springframework.cglib.core.ClassNameReader.java

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/*
 * Copyright 2003 The Apache Software Foundation
 *
 *  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 org.springframework.cglib.core;

import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.Opcodes;

import java.util.*;

@SuppressWarnings("rawtypes")
public class ClassNameReader {
    private ClassNameReader() {
    }

    private static final EarlyExitException EARLY_EXIT = new EarlyExitException();

    @SuppressWarnings("serial")
    private static class EarlyExitException extends RuntimeException {
    }

    public static String getClassName(ClassReader r) {

        return getClassInfo(r)[0];

    }

    @SuppressWarnings("unchecked")
    public static String[] getClassInfo(ClassReader r) {
        final List array = new ArrayList();
        try {
            r.accept(new ClassVisitor(Opcodes.ASM4, null) {
                public void visit(int version, int access, String name, String signature, String superName,
                        String[] interfaces) {
                    array.add(name.replace('/', '.'));
                    if (superName != null) {
                        array.add(superName.replace('/', '.'));
                    }
                    for (int i = 0; i < interfaces.length; i++) {
                        array.add(interfaces[i].replace('/', '.'));
                    }

                    throw EARLY_EXIT;
                }
            }, ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
        } catch (EarlyExitException e) {
        }

        return (String[]) array.toArray(new String[] {});
    }
}