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Groups > comp.lang.forth > #38959

Recognizer RfD was Re: SET-COMPILER

From "Alex McDonald" <blog@rivadpm.com>
Newsgroups comp.lang.forth
Subject Recognizer RfD was Re: SET-COMPILER
Date 2015-05-11 08:07 +0100
Organization A noiseless patient Spider
Message-ID <mipke4$7vn$1@dont-email.me> (permalink)
References (4 earlier) <5544c837$0$21329$e4fe514c@dreader37.news.xs4all.nl> <2015May2.190034@mips.complang.tuwien.ac.at> <mi4sm2$rvg$1@dont-email.me> <01dd1f51-fe2b-495c-9068-fa0eecee511f@googlegroups.com> <mibb5p$ibh$1@dont-email.me>

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on 05/05/2015 22:03:56, "Alex McDonald" wrote:
> I've reviewed the recognizer RfD and my first reaction is that it's
> too complex and too prescriptive.

http://amforth.sourceforge.net/pr/Recognizer-rfc.pdf
http://amforth.sourceforge.net/pr/Recognizer2-en.pdf

http://www.complang.tuwien.ac.at/anton/euroforth/ef12/papers/paysan-recognizers.pdf

I've had an opportunity to do some coding and play around with the
concepts in the RfD over the last few days. I still believe it's
over-prescriptive but it could be reduced back to a smaller set of words.
It's interesting in its relative simplicity and flexibility at core, and
it's potential for orthogonal treatment of words and numbers during
interpretation and compilation. Perhaps the only downside is the
requirement to return a named token R:FAIL from recognizers. Win32Forth
uses THROW for this purpose, which is not ideal either, but it does allow
the stack to be in some disarray when failing. We had a fail flag before,
and it caused quite a bit of a headache when parsing complex structures
and having to balance the stack on exit. The solution then was to
encapsulate with a CATCH, which led directly to using the THROW as a
signal.


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Thread

SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-27 01:34 -0700
  Re: SET-COMPILER stephen@mpeforth.com (Stephen Pelc) - 2015-04-27 14:52 +0000
    Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-04-27 21:17 +0200
    Re: SET-COMPILER hughaguilar96@gmail.com - 2015-04-28 09:41 -0700
  Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-04-27 16:53 +0100
    Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-04-27 17:02 +0100
      Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-27 10:23 -0700
    Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-27 10:02 -0700
      Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-01 17:15 +0000
        Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-01 23:38 +0200
  Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-04-27 14:52 +0000
    Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-04-27 17:09 +0100
      Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-04-27 16:54 +0000
        Re: SET-COMPILER stephen@mpeforth.com (Stephen Pelc) - 2015-04-28 09:11 +0000
          Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-28 04:28 -0700
            Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-29 13:49 -0700
              Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-04-30 00:13 +0200
              Re: SET-COMPILER stephen@mpeforth.com (Stephen Pelc) - 2015-04-30 06:32 +0000
                Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-30 05:22 -0700
                Re: SET-COMPILER stephen@mpeforth.com (Stephen Pelc) - 2015-04-30 15:27 +0000
                Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-04-30 19:16 +0100
                Re: SET-COMPILER stephen@mpeforth.com (Stephen Pelc) - 2015-04-30 21:08 +0000
                Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-04-30 23:05 +0100
                Re: SET-COMPILER hughaguilar96@gmail.com - 2015-04-30 15:47 -0700
                Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-01 12:29 +0100
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 15:25 +0000
                Re: SET-COMPILER hughaguilar96@gmail.com - 2015-04-30 17:07 -0700
                Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-01 02:40 -0700
                Re: SET-COMPILER stephen@mpeforth.com (Stephen Pelc) - 2015-05-01 10:24 +0000
                Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-01 22:55 +0200
                Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-02 01:32 -0700
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 16:27 +0000
                Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-03 08:36 -0700
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-04 16:44 +0000
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 15:37 +0000
                Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-01 01:33 +0200
                Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-01 03:15 -0700
                Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-01 12:47 +0000
                Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-01 10:29 -0700
                Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-01 20:32 +0000
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 15:51 +0000
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 15:29 +0000
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 14:59 +0000
              Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-04 16:11 +0000
          Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 12:04 +0000
    Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-04-28 03:22 +0200
      Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 11:09 +0000
        Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-02 12:30 +0000
          Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 16:58 +0000
        Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-02 20:42 +0200
          Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-04 16:28 +0000
          Re: SET-COMPILER Mark Wills <markwills1970@gmail.com> - 2015-05-06 04:14 -0700
    Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-04-27 23:57 -0700
      Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 11:41 +0000
        Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-02 12:51 +0000
          Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-02 17:00 +0000
            Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-03 11:19 +0100
              Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-03 07:30 -0700
                Re: SET-COMPILER Coos Haak <chforth@hccnet.nl> - 2015-05-03 21:45 +0200
                Re: SET-COMPILER Coos Haak <chforth@hccnet.nl> - 2015-05-03 21:48 +0200
                Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-05 22:03 +0100
                Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-05 22:56 +0000
                PREFIX JennyB <jennybrien@googlemail.com> - 2015-05-06 02:30 -0700
                Re: PREFIX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-06 12:23 +0000
                Re: PREFIX "Alex McDonald" <blog@rivadpm.com> - 2015-05-06 16:44 +0100
                Re: PREFIX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-06 16:03 +0000
                Re: PREFIX "Alex McDonald" <blog@rivadpm.com> - 2015-05-06 17:40 +0100
                Re: PREFIX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-06 19:44 +0000
                Re: PREFIX Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-06 22:05 +0200
                Re: PREFIX Bernd Linsel <bl1@gmx.com> - 2015-05-07 04:23 +0200
                Re: PREFIX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-08 11:48 +0000
                Re: PREFIX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-08 12:04 +0000
                Re: PREFIX anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-08 11:55 +0000
                Re: PREFIX "Alex McDonald" <blog@rivadpm.com> - 2015-05-06 14:20 +0100
                Re: PREFIX albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-06 19:41 +0000
                Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-06 12:29 +0000
                Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-06 15:07 +0100
                Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-09 03:02 -0700
                Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-09 17:23 +0100
                Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 08:07 +0100
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 11:20 +0100
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-12 10:05 -0700
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 18:34 +0100
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-12 12:07 -0700
                Re: Recognizer RfD was Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-12 22:11 +0200
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 21:35 +0100
                Re: Recognizer RfD was Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-13 01:31 +0200
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-13 16:20 +0000
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-13 12:20 -0700
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-13 22:24 +0100
                Re: Recognizer RfD was Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-14 11:26 +0000
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-14 11:00 -0700
                Re: Recognizer RfD was Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-14 08:06 -0700
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-14 17:21 +0100
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-14 11:31 -0700
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-14 19:41 +0100
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-14 11:49 -0700
                Re: Recognizer RfD was Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 09:41 +0000
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-15 12:19 +0100
                Re: Recognizer RfD was Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 14:42 +0000
                Re: Recognizer RfD was Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-15 10:37 -0700
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-15 23:00 +0100
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-16 13:52 +0000
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-16 19:24 +0100
                Re: Recognizer RfD was Re: SET-COMPILER Matthias Trute <matthias.trute@gmail.com> - 2015-05-16 13:26 -0700
                Re: Recognizer RfD was Re: SET-COMPILER Coos Haak <chforth@hccnet.nl> - 2015-05-17 00:27 +0200
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-17 10:03 +0000
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-17 23:25 +0100
                Re: Recognizer RfD was Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 10:02 +0000
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-15 12:35 +0100
                Re: Recognizer RfD was Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-15 15:33 +0000
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-15 14:01 +0000
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-15 13:14 +0000
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-13 17:07 +0000
                Re: Recognizer RfD was Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-14 03:27 +0200
                Re: Recognizer RfD was Re: SET-COMPILER hughaguilar96@gmail.com - 2015-05-13 19:23 -0700
                Re: Recognizer RfD was Re: SET-COMPILER JennyB <jennybrien@googlemail.com> - 2015-05-14 01:08 -0700
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-13 14:30 +0000
                Re: Recognizer RfD was Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-14 03:40 +0200
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-15 13:26 +0000
                Re: Recognizer RfD was Re: SET-COMPILER "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 21:33 +0100
                Re: Recognizer RfD was Re: SET-COMPILER albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-13 10:36 +0000
                Re: Recognizer RfD was Re: SET-COMPILER anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-13 16:06 +0000
              Re: SET-COMPILER Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-03 20:38 +0200

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