Summary

This file contains a simple exception handling system for Unicon.

Example use of the classes in this package:

   case x := Try().call{ f(1) } of {
       Try().isException(x): write(x.getMessage(),": ",x.getLocation())
       default: write("x is ",x)
       }

   case x := Try().call{ f(1) } of {
       Try().catch(): {
           x := Try().getException()
           write(x.getMessage(),": ",x.getLocation())
           }
       default: write("x is ",x)
       }

   Exception().throw("format error")

There are some limitations to this implementation of exceptions. For example, the stack trace associated with an exception is constrained to the current co-expression stack. Also, the code executed in the Try().call{...} clause is a bounded expression that can produce at most one result.

Author: Steve Wampler (sbw@tapestry.tucson.az.us)

This file is in the public domain.

This file is part of the exception package.