ASM for Reflection

Hi!

Is it possibly after all that ASM can be used for Reflection without Java Reflection?

I have already written it on the BCEL Mailinglist:
http://www.mail-archive.com/[email protected]/msg06723.html
http://www.mail-archive.com/[email protected]/msg06725.html

I want to see Methods and Fileds of an Class. But it can possible, that the cass isn't in my classpath. Or that I want to use for compilation a different version then that, what the compiler itself use.
Is that with ASM possible?

For showing Methods with ASM I have currently found this one in the web:
http://osdir.com/ml/java.objectweb.asm/2008-04/msg00048.html

I have changed it a little bit to this one:

import org.objectweb.asm.*;
import org.objectweb.asm.tree.*;
import java.util.*;
import java.io.*;

public class ShowIt {

  public static void main(String[] args) {
    try {
      ClassNode cn = new ClassNode();
      ClassReader cr = new ClassReader("java.util.HashMap");
      cr.accept(cn, 0);
      System.out.println(cn.access);
      System.out.println(cn.name);
      System.out.println(cn.outerClass);
      System.out.println(cn.outerMethod);
      System.out.println(cn.outerMethodDesc);
      System.out.println(cn.signature);
      System.out.println(cn.sourceDebug);
      System.out.println(cn.sourceFile);
      System.out.println(cn.superName);
      System.out.println(cn.version);

      System.out.println("--------------");

      for (Iterator i = cn.methods.iterator(); i.hasNext(); ) {
        MethodNode mn = (MethodNode) i.next();
        System.out.println(mn.name + "  -  " + mn.desc);
      }
    } catch (IOException e) {
      System.out.println(e);
    }
  }

}


The output is very different to that of Javap. So I have to write myself methods, which gives back how many arguments a reflected method have and so on.
But if I doing it, then the compiler will be slower, too, and the performance advantage of ASM to BCEL isn't no longer so great.

And as I mentioned, I am not sure, if it then do not using Java Reflaction as base.

Greatings
theuserbl

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