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Groups > comp.lang.forth > #56535
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: bug in VFX --- IF does't work |
| Date | 2017-04-01 12:55 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2017Apr1.145543@mips.complang.tuwien.ac.at> (permalink) |
| References | (6 earlier) <fM-dnSnYeqrsXkHFnZ2dnUU7-TGdnZ2d@supernews.com> <2017Mar30.174535@mips.complang.tuwien.ac.at> <G42dncVOt4fHp0DFnZ2dnUU7-ffNnZ2d@supernews.com> <2017Mar31.112358@mips.complang.tuwien.ac.at> <14adnSxBmqdo00PFnZ2dnUU7-S3NnZ2d@supernews.com> |
Andrew Haley <andrew29@littlepinkcloud.invalid> writes:
>Anton Ertl <anton@mips.complang.tuwien.ac.at> wrote:
>> Andrew Haley <andrew29@littlepinkcloud.invalid> writes:
[...]
>But dual-wordlist caused confusion even if you
>weren't trying to play tricks to implement words like S" : "ordinary"
>immediate words, i.e. those not intended to be used interpretatively,
>were adversely affected as well.
Can you give an example?
>>>: s" ... ; immediate
>>>: s" ... ;
>>>
>>>then in compilation state you want the first one, not he second.
>>
>> In a standard system,
>
>It's not a standard system, it's a dual-wordlist system.
You make it sound as if these were incompatible, but that is contrary
to the intention of the Forth-94 TC.
>Besides, nobody is
>advocating dual-wordlist systems, so I don't understand your point in
>pursuing this.
The dual-wordlist approach looked so attractive to the Forth-94 TC
that they specified that standard in a way that can be implemented
with a dual-wordlist approach. OTOH, the implementors of Forth-94
then did not want to take this approach, and the implementors of
dual-wordlist systems did not want to take the extra steps to become
Forth-94 compliant. This is a somewhat paradoxical result, and I am
interested in understanding the issues involved.
One thing the present discussion turned up is that the system you used
had a non-standard meaning of IMMEDIATE (more along the lines of
IMMEDIATE COMPILE-ONLY in Gforth, but without shadowing the
interpretation semantics of other definitions with the same name); it
also did not obey the rule that the latest definition of a name within
a wordlist (pair) takes precedence. Both of these can be fixed
without much implementation effort (the bigger problem may be existing
programs for the system).
For the standard IMMEDIATE, two implementations come to mind: make a
SYNONYM of the last definition in the compiler wordlist; or have an
immediate flag in each word in the regular wordlist.
- anton
--
M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
New standard: http://www.forth200x.org/forth200x.html
EuroForth 2016: http://www.euroforth.org/ef16/
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Re: bug in VFX --- IF does't work rickman <gnuarm@gmail.com> - 2017-03-18 17:37 -0400
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-18 15:08 -0700
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-18 15:17 -0700
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-18 22:22 +0000
Re: bug in VFX --- IF does't work rickman <gnuarm@gmail.com> - 2017-03-18 19:47 -0400
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-18 17:06 -0700
Re: bug in VFX --- IF does't work rickman <gnuarm@gmail.com> - 2017-03-18 20:58 -0400
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-19 18:04 +0000
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-19 10:53 +0000
Re: bug in VFX --- IF does't work Cecil Bayona <cbayona@cbayona.com> - 2017-03-19 12:57 -0500
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-19 13:39 -0500
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-19 14:48 -0700
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-19 22:05 +0000
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-19 17:57 +0000
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-19 12:18 -0700
Re: bug in VFX --- IF does't work Bernd Paysan <bernd@net2o.de> - 2017-03-22 22:57 +0000
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-22 17:18 -0700
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-23 04:03 -0500
Re: bug in VFX --- IF does't work albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-03-23 15:01 +0100
Re: bug in VFX --- IF does't work peter.m.falth@gmail.com - 2017-03-23 07:12 -0700
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-29 20:31 -0700
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-23 10:22 -0500
Re: bug in VFX --- IF does't work Bernd Paysan <bernd@net2o.de> - 2017-03-30 02:31 +0000
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-30 03:36 -0500
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-30 15:45 +0000
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-30 12:03 -0500
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-30 14:04 -0700
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-31 09:23 +0000
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-31 07:43 -0500
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-04-01 12:55 +0000
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-04-01 11:52 -0500
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-23 12:23 +0000
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-23 15:57 +0000
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-23 17:38 +0000
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-23 17:58 +0000
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-23 19:16 +0000
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-24 09:52 +0000
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-23 18:26 +0000
Re: bug in VFX --- IF does't work Bernd Paysan <bernd@net2o.de> - 2017-03-30 02:55 +0000
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-29 20:49 -0700
Re: bug in VFX --- IF does't work Mark Wills <markwills1970@gmail.com> - 2017-03-30 03:04 -0700
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-30 06:47 -0500
Re: bug in VFX --- IF does't work Alex <alex@rivadpm.com> - 2017-03-30 12:56 +0100
Re: bug in VFX --- IF does't work Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-30 09:41 -0500
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-30 13:59 -0700
Re: bug in VFX --- IF does't work Bernd Paysan <bernd@net2o.de> - 2017-05-01 01:33 +0000
Re: bug in VFX --- IF does't work "Elizabeth D. Rather" <erather@forth.com> - 2017-04-30 15:50 -1000
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-04-30 19:34 -0700
Re: bug in VFX --- IF does't work albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-01 23:53 +0200
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-05-01 18:54 -0700
Re: bug in VFX --- IF does't work Bernd Paysan <bernd@net2o.de> - 2017-05-02 15:01 +0000
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-05-02 11:30 -0700
Re: bug in VFX --- IF does't work Cecil Bayona <cbayona@cbayona.com> - 2017-05-02 13:36 -0500
Re: bug in VFX --- IF does't work Bernd Paysan <bernd@net2o.de> - 2017-05-02 22:57 +0000
Re: bug in VFX --- IF does't work anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-31 09:45 +0000
Re: bug in VFX --- IF does't work hughaguilar96@gmail.com - 2017-03-31 20:09 -0700
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