Honors Adjunct Assignment 1:

Due date: Feb. 3, 2003

Study aspectj.org.

Install AspectJ following:

http://www.ccs.neu.edu/home/lieber/com3360/w03/CCS_AspectJ_Usage.html

Write an AspectJ program that prints a message to the output file
whenever a method of some class C calls a method of class C.
In other words, detect all local calls.
Print the join point object for each such call on a separate line.

This is part of a Law of Demeter Checker written in AspectJ.

Reuse the following utility class.

// author: Pengcheng Wu
import org.aspectj.lang.reflect.*;
import org.aspectj.lang.*;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.reflect.SourceLocation;
import java.util.*;


class JPUtil {
	static String toString(JoinPoint jp) {
		SourceLocation sl = jp.getSourceLocation();
		String fname = sl.getFileName();
		int line = sl.getLine();
		int col = sl.getColumn();
                Object [] argsArray = jp.getArgs();
                System.out.println("arguments");
		for(int i=0; i<argsArray.length; i++)
		       System.out.print ("argument " + argsArray[i] + " ");
                System.out.println("end arguments");
		return
			" >>> " + jp.getSignature().toString() 
			+ " in " + fname
			+ " line " + line + "(" + col + ") ";
			// + " args " + argsArray;
			// + " toLongString " + jp.toLongString();
	}
}

Use a pointcut like: call(* *(..)) && ...

and advice statements like:

Object thisObject = thisJoinPoint.getThis();
Object targetObject = thisJoinPoint.getTarget();

-- Karl Lieberherr