/**
    * 
    */
   package net.sf.madmap;
   
   import java.lang.reflect.Method;
   
   import org.springframework.aop.*;
   
  /**
   * @author ecaspole
   *
   */
  public class Tracer implements MethodBeforeAdvice, AfterReturningAdvice {
  	int	_depth = 0;
  	
  	public Tracer() {}
  	
  	public void before( Method m, Object[] args, Object target ) {
  		_depth++;
  		for (int i=0; i<_depth; i++) {
  			System.out.print(" ");
  		}
  		System.out.println("--> " + m.getName());
  	}
  
  	public void afterReturning( Object retVal, Method m, Object[] args, Object target ) {
  		for (int i=0; i<_depth; i++) {
  			System.out.print(" ");
  		}
  		System.out.println("<-- " + m.getName());
  		_depth--;
  	}
  }