[aspectc-user] cout insertion -- AOP-able?

Craig E. Tull cetull at lbl.gov
Thu May 6 02:36:46 CEST 2004

We are trying to intercept and override the illegal use of cout in a 
large, high energy physics framework. We would like to use this as an 
illustration of the power of AOP.

We believe that aspectc's inability to handle templates is the reason 
that the following does not work. Are we doing something wrong? If 

...Are there any workarounds? What are the prospects of this trivial 
example working in a future release?

- Craig

/////////////////////////////////////////////// main.cc
#include <iostream>
int main();
int main()
	std::cout <<  "Hello world" << std::endl;
	return 0;

/////////////////////////////////////////////// Cnot.ah
#ifndef __Cnot_h__
#define __Cnot_h__
#include <iostream>
aspect Cnot
	pointcut inserter() = "% std::cout::operator<<(...)";
	advice execution(inserter ()) : void around ()
		std::cerr << "Sorry, no output allowed!!!" << std::endl;
#endif // __Cnot_h__

  Craig E. Tull, Ph.D.
  National Energy Research Scientific Computing Center
  E.O. Lawrence Berkeley National Laboratory
  EMail: cetull at lbl.gov       WWW: http://iago.lbl.gov/
  Phone: (510)486-7253        FAX: (510)486-4004
   eFAX: (509)694-8759     Assist: (510)486-6586

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