Forums before death by AOL, social media and spammers... "We can't have nice things"
|    comp.lang.forth    |    Forth programmers eat a lot of Bratwurst    |    117,927 messages    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
|    Message 117,303 of 117,927    |
|    dxf to Ruvim    |
|    Re: QUIT and ABORT    |
|    08 May 25 12:52:14    |
      From: dxforth@gmail.com              On 8/05/2025 3:52 am, Ruvim wrote:       > ...       > I use `quit` only for testing and debugging. And I expect to get into the       Forth text interpreter (Forth shell) exactly in the current program state (as       far as possible).       >       > If `quit` simply calls `-56 throw`, the program state will probably change       (due to actions after `catch` in the program, including restoring the data       stack depth in `throw`) when you get into the Forth shell. Also, there is a       chance that you will not        get into the Forth shell at all if the program does not re-throw the error in       some places.       >       > So I would not recommend the suggested deviation in the `quit` behavior even       for new implementers, since this brakes the well-known expectation from       `quit`. A better way is to introduce another word with desired behavior       deviation.              ANS never gave a rationale for ABORT ABORT" QUIT - only options that we're now       exploring.              For the reasons you've stated I'm reluctant to define:              : QUIT -56 THROW ;              But are there reasons an application might were THROW able to handle it? It's       arguable ANS left the door open. Just because the spec for THROW didn't       special-case -56 doesn't mean an implementer can't.              --- SoupGate-DOS v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
(c) 1994, bbs@darkrealms.ca