[Bug 63] New: thisJoinPoint should be unique among multiple pieces of advice

http://abc.comlab.ox.ac.uk/cgi-bin/bugzilla/show_bug.cgi?id=63

           Summary: thisJoinPoint should be unique among multiple pieces of
                    advice
           Product: abc
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: AspectJ compiler
        AssignedTo: abc-bugs@comlab.ox.ac.uk
        ReportedBy: Oege.de.Moor@comlab.ox.ac.uk

when multiple pieces of advice refer to thisJoinPoint, and they apply to the
same joinpoint, only one joinpoint instance should be created. Instead abc
creates a new instance for every piece of advice separately. When compiled with
ajc, this piece of code prints no output; with abc, it prints "argh".

This blocks the use of thisJoinPoint in tracematches, which would allow an
interesting way of expressing "matching bracket" conditions.

import org.aspectj.lang.*;

aspect Aspect {
  JoinPoint jp;
  before() : call(* foo(..)) {
     jp = thisJoinPoint;
  }
  after() : call(* foo(..)) {
     if (jp != thisJoinPoint)
        System.out.println("argh");
  }
}

public class JP {
   static void foo() {}
   public static void main(String[] args) {
        foo();
   }
}

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Received on Tue Dec 13 15:00:22 2005