Class: Exception

• Inheritance
• Description
• Class protocol
  • testing

Inheritance:

   Object
   |
   +--GenericException
      |
      +--Exception
         |
         +--ControlRequest
         |
         +--Error

Package:

stx:libbasic

Category:

Kernel-Exceptions

Version:

rev: 1.86 date: 2021/11/26 13:56:04

user: cg

file: Exception.st directory: libbasic

module: stx stc-classLibrary: libbasic

Description:

Exception is an abstract superclass of all exceptions in the system,
which are not generated by user actions (e.g. keyboard interrupts) nor by
errors in the exception system itself.

Think twice before subclassing directly from Exception. Consider to subclass
from one of Exceptions subclasses Error, Warning, UserNotification...

You should also handle Error instead of Exception, since breakpoints,
halts and user informational messages are processed as exceptions.

The behavior is in GenericException, to allow for some exceptions 
(UnhandledExceptionException and UserInterrupts) not to be a child of Exception.

copyright
COPYRIGHT (c) 1993 by Claus Gittinger
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 isAbstract

Return if this class is an abstract class.
True is returned here for myself only; false for subclasses.
Abstract subclasses must redefine this again.