com.toolazydogs.maiden.agent.asm.RunnableVisitor.java Source code

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Here is the source code for com.toolazydogs.maiden.agent.asm.RunnableVisitor.java

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/**
 *
 * Copyright 2011 (C) The original author or authors
 *
 * 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.toolazydogs.maiden.agent.asm;

import java.util.logging.Level;
import java.util.logging.Logger;

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

/**
 *
 */
public class RunnableVisitor implements ClassVisitor, Opcodes {
    private final static String CLASS_NAME = RunnableVisitor.class.getName();
    private final static Logger LOGGER = Logger.getLogger(CLASS_NAME);
    private final ClassLoader loader;
    private final ClassVisitor delegate;
    private boolean runnable = false;

    public RunnableVisitor(ClassLoader loader, ClassVisitor delegate) {
        assert loader != null;
        assert delegate != null;

        this.loader = loader;
        this.delegate = delegate;
    }

    public void visit(int version, int access, String name, String signature, String superName,
            String[] interfaces) {
        for (String interfaceName : interfaces) {
            try {
                Class clazz = loader.loadClass(interfaceName);
                if (Runnable.class.isAssignableFrom(clazz))
                    runnable = true;
            } catch (ClassNotFoundException cnfe) {
                LOGGER.log(Level.SEVERE, "Unable to load interface class " + interfaceName, cnfe);
                throw new Error("Unable to load interface class " + interfaceName, cnfe);
            }
        }

        try {
            Class clazz = loader.loadClass(superName);
            if (Runnable.class.isAssignableFrom(clazz))
                runnable = true;
        } catch (ClassNotFoundException cnfe) {
            LOGGER.log(Level.SEVERE, "Unable to load parent class " + superName, cnfe);
            throw new Error("Unable to load parent class " + superName, cnfe);
        }

        delegate.visit(version, access, name, signature, superName, interfaces);
    }

    public void visitSource(String source, String debug) {
        delegate.visitSource(source, debug);
    }

    public void visitOuterClass(String owner, String name, String desc) {
        delegate.visitOuterClass(owner, name, desc);
    }

    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
        return delegate.visitAnnotation(desc, visible);
    }

    public void visitAttribute(Attribute attr) {
        delegate.visitAttribute(attr);
    }

    public void visitInnerClass(String name, String outerName, String innerName, int access) {
        delegate.visitInnerClass(name, outerName, innerName, access);
    }

    public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
        return delegate.visitField(access, name, desc, signature, value);
    }

    public MethodVisitor visitMethod(int access, final String name, final String desc, String signature,
            String[] exceptions) {
        return delegate.visitMethod(access, name, desc, signature, exceptions);
    }

    public void visitEnd() {
        delegate.visitEnd();
    }
}