Groups > comp.lang.forth > #22033

Re: The most elegant Forth interpreter.

From	Bernd Paysan <bernd.paysan@gmx.de>
Newsgroups	comp.lang.forth
Subject	Re: The most elegant Forth interpreter.
Date	2013-04-29 20:55 +0200
Organization	1&1 Internet AG
Message-ID	<klmfn2$at2$1@online.de> (permalink)
References	(3 earlier) <517d1d05$0$6365$e4fe514c@dreader35.news.xs4all.nl> <i8WdnTKGo8GaAeDMnZ2dnUVZ_rydnZ2d@supernews.com> <7x61z6dt5d.fsf@ruckus.brouhaha.com> <AsydnQSMvYzfsuPMnZ2dnUVZ_oGdnZ2d@supernews.com> <_IydnS9MuYNaK-PMnZ2dnUVZ_jqdnZ2d@supernews.com>

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Elizabeth D. Rather wrote:
> This is an
> important point. Forth metacompilation is a difficult process to
> understand completely. It requires the direct manipulation of three
> distinct execution phases and object areas, and is not something that a
> casual user wanted or needed.

IMHO this is the key issue why JonesForth is popular amongst newbies, while 
we don't like it.  Newbies have a hard time with cross compilers.  A fig-
Forth listing takes them from what they know (assembler) to the unknown 
territory step by step, without needing to understand the cross compiler 
"magic".  They don't understand the assembler magic, either, but they do 
understand the assembler semantics.

In any case, the "assembler magic" is a lot less than the cross compiler 
magic.  However, the cross compiler is a lot *easier to use*, as you write 
your code in a very Forth-like language.

There's also a lot of code duplication: The cross compiler needs to create 
headers and compile control structures and all that stuff, which then is 
again defined in the target.  It probably would be much better if the 
compiler source code could be reused.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/

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The most elegant Forth interpreter. albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-27 09:13 +0000
  Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-27 22:46 -0700
    Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-28 03:37 -0500
      Re: The most elegant Forth interpreter. albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-28 12:58 +0000
        Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-28 17:00 -0500
          Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-28 18:26 -0700
            Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-29 03:28 -0500
              Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-29 01:38 -0700
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-29 01:43 -0700
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-29 04:01 -0500
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-05-10 21:20 -0700
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-05-11 02:03 -0500
                Re: The most elegant Forth interpreter. David Schultz <abuse@127.0.0.1> - 2013-05-11 11:01 -0500
                Re: The most elegant Forth interpreter. David Schultz <abuse@127.0.0.1> - 2013-05-11 15:53 -0500
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-05-11 20:59 -0700
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-05-12 02:40 -0500
              Re: The most elegant Forth interpreter. "Elizabeth D. Rather" <erather@forth.com> - 2013-04-29 08:07 -1000
                Re: The most elegant Forth interpreter. Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-29 20:55 +0200
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-29 16:28 -0500
                Re: The most elegant Forth interpreter. Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-29 23:35 +0200
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-29 17:28 -0500
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-29 23:20 -0700
                Re: The most elegant Forth interpreter. "Elizabeth D. Rather" <erather@forth.com> - 2013-04-29 21:11 -1000
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-30 03:21 -0500
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-30 01:57 -0700
                Re: The most elegant Forth interpreter. albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-30 09:00 +0000
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-30 02:10 -0700
                Re: The most elegant Forth interpreter. albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-30 14:34 +0000
                Re: The most elegant Forth interpreter. Coos Haak <chforth@hccnet.nl> - 2013-04-30 17:18 +0200
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-30 10:04 -0700
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-30 04:13 -0500
                Re: The most elegant Forth interpreter. Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-30 18:40 +0200
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-30 12:50 -0500
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-05-03 22:01 -0700
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-30 04:09 -0500
                Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-05-06 19:29 -0700
                Re: The most elegant Forth interpreter. Elizabeth D Rather <erather@forth.com> - 2013-04-29 12:35 -1000
                Re: The most elegant Forth interpreter. Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-30 01:50 +0200
                Re: The most elegant Forth interpreter. "Elizabeth D. Rather" <erather@forth.com> - 2013-04-29 13:55 -1000
                Re: The most elegant Forth interpreter. albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-30 09:03 +0000
            Re: The most elegant Forth interpreter. albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-29 10:32 +0000
              Re: The most elegant Forth interpreter. Paul Rubin <no.email@nospam.invalid> - 2013-04-29 08:34 -0700
                Re: The most elegant Forth interpreter. "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-04-29 17:31 -0400
                Re: The most elegant Forth interpreter. Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-29 17:56 -0500
              Re: The most elegant Forth interpreter. lynx <rinkasu@kaze.void.null> - 2013-04-29 22:38 +0000
    Re: The most elegant Forth interpreter. "Ed" <invalid@nospam.com> - 2013-04-29 12:31 +1000
      Re: The most elegant Forth interpreter. Spam@ControlQ.com - 2013-04-29 13:31 -0400
  Re: The most elegant Forth interpreter. jlarsonfour3@gmail.com - 2013-04-29 08:14 -0700
  Re: The most elegant Forth interpreter. the_gavino_himself <visphatesjava@gmail.com> - 2013-04-29 10:28 -0700

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