com.fjn.helper.frameworkex.asm.test.ClassPrinterTest.java Source code

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Here is the source code for com.fjn.helper.frameworkex.asm.test.ClassPrinterTest.java

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/*
 *
 *  Copyright 2018 FJN Corp.
 *
 *  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.
 *
 *  Author                        Date                       Issue
 *  fs1194361820@163.com          2015-01-01                 Initial Version
 *
 */

package com.fjn.helper.frameworkex.asm.test;

import java.io.IOException;

import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

public class ClassPrinterTest extends ClassVisitor {

    public ClassPrinterTest() {
        super(Opcodes.ASM4);
    }

    @Override
    public void visit(int version, int access, String name, String signature, String superName,
            String[] interfaces) {
        System.out.println(name + " extends " + superName + " {");
    }

    @Override
    public void visitSource(String source, String debug) {
    }

    @Override
    public void visitOuterClass(String owner, String name, String desc) {
    }

    @Override
    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
        return null;
    }

    @Override
    public void visitAttribute(Attribute attr) {
    }

    @Override
    public void visitInnerClass(String name, String outerName, String innerName, int access) {
    }

    @Override
    public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
        System.out.println("    " + desc + " " + name);
        return null;
    }

    @Override
    public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
        System.out.println("    " + name + " : " + desc);
        return null;
    }

    @Override
    public void visitEnd() {
        System.out.println("}");
    }

    public static void main(String[] args) throws IOException {
        ClassPrinterTest printer = new ClassPrinterTest();
        ClassReader reader = new ClassReader("com.fjn.helper.frameworkex.asm.test.ClassPrinterTest");
        reader.accept(printer, 0);
    }
}