Can ASM method-visitors be used with interfaces?

I need to write a tool that lists the classes that call methods of specified
interfaces. It will be used as part of the build process of a large java
application consisting of many modules. The goal is to automatically document
the dependencies between certain java modules.

I found several tools for dependency analysis, but they don't work on the
method level, just for packages or jars. Finally I found ASM, that seems to do
what I need.

The following code prints the method dependencies of all class files in a given
directory:

--------------
import java.io.*;
import java.util.*;

import org.objectweb.asm.ClassReader;

public class Test {

    public static void main(String[] args) throws Exception {

	File dir = new File(args[0]);

	List<File> classFiles = new LinkedList<File>();
	findClassFiles(classFiles, dir);

	for (File classFile : classFiles) {
	    InputStream input = new FileInputStream(classFile);
	    new ClassReader(input).accept(new MyClassVisitor(), 0);
	    input.close();
	}
    }

    private static void findClassFiles(List<File> list, File dir) {
	for (File file : dir.listFiles()) {
	    if (file.isDirectory()) {
		findClassFiles(list, file);
	    } else if (file.getName().endsWith(".class")) {
		list.add(file);
	    }
	}
    }
}
--------------------
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.commons.EmptyVisitor;

public class MyClassVisitor extends EmptyVisitor {

    private String className;

    @Override
    public void visit(int version, int access, String name, String signature,
	    String superName, String[] interfaces) {
	this.className = name;
    }

    @Override
    public MethodVisitor visitMethod(int access, String name, String desc,
	    String signature, String[] exceptions) {

	System.out.println(className + "." + name);
	return new MyMethodVisitor();
    }
}
------------------------
import org.objectweb.asm.commons.EmptyVisitor;

public class MyMethodVisitor extends EmptyVisitor {

    @Override
    public void visitMethodInsn(int opcode, String owner, String name,
	    String desc) {

	String key = owner + "." + name;
	System.out.println("  " + key);
    }
}
-----------------------

The Problem:
The code works for regular classes only! If the class file contains an
interface, visitMethod() is called, but not visitMethodInsn(). I don't get any
info about the callers of interface methods.

Any ideas?

-- 
You receive this message as a subscriber of the [email protected] mailing list.
To unsubscribe: mailto:[email protected]
For general help: mailto:[email protected]?subject=help
OW2 mailing lists service home page: http://www.ow2.org/wws