Re: Parsers for extensible grammars?

From	Don Y <this@is.not.me.com>
Newsgroups	comp.arch.embedded
Subject	Re: Parsers for extensible grammars?
Date	2014-10-24 07:46 -0700
Organization	Aioe.org NNTP Server
Message-ID	<m2domt$inr$1@speranza.aioe.org> (permalink)
References	<m28vlb$lum$1@speranza.aioe.org> <cauih2F8i6eU1@mid.individual.net>

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Hi Paul,

On 10/24/2014 1:56 AM, Paul E Bennett wrote:
> Don Y wrote:
>
>> I'm writing a command parser.  Some set of commands are "common".
>> But, other instances of the parser are augmented with additional
>> commands/syntax.
>>
>> [These additions are known at compile time, not "dynamic"]

> Have you looked at Forth? What you are describing sounds like the problem
> that Forth solved back in 1968. It is the sort of thing that Forth
> programmers have been doing for nearly 50 years and it works very
> successfully for us.

I am leary of taking things in a different direction from what
is (and has been) expected in the codebase.  IIRC, someone did
something like this as part of an early FreeBSD release (?).
And, I think SPARCs have a Forth-based "Open Firmware".  So,
it's not a "revolutionary" concept that I'd have to expend effort
defending...

Admittedly, it lets you (the user) do lots of things that you
wouldn't be able to even consider in, e.g., a conventional BIOS.
(And, would be far more "future safe" from my point of view).

I'll have to think real hard on that.  If the "typical" sorts
of things "look mildly familiar", then it might be possible
to slip it in under the radar (without religious issues biasing
the decision/acceptance).  OTOH, if things start to look too
funky, then it just gives people an excuse to dislike it.  :-/

Thanks!
--don

Thread

Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-22 12:14 -0700
  Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-22 12:17 -0700
  Re: Parsers for extensible grammars? Tim Wescott <seemywebsite@myfooter.really> - 2014-10-22 15:13 -0500
    Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-22 22:54 -0700
      Re: Parsers for extensible grammars? Stefan Reuther <stefan.news@arcor.de> - 2014-10-23 18:36 +0200
        Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-23 12:10 -0700
      Re: Parsers for extensible grammars? Tim Wescott <seemywebsite@myfooter.really> - 2014-10-23 13:45 -0500
        Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-23 12:15 -0700
      Re: Parsers for extensible grammars? jim.brakefield@ieee.org - 2014-10-24 07:05 -0700
        Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-24 08:04 -0700
  Re: Parsers for extensible grammars? Clifford Heath <no.spam@please.net> - 2014-10-23 08:22 +1100
    Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-22 23:25 -0700
    Re: Parsers for extensible grammars? George Neuner <gneuner2@comcast.net> - 2014-10-23 04:45 -0400
      Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-23 04:14 -0700
        Re: Parsers for extensible grammars? George Neuner <gneuner2@comcast.net> - 2014-10-23 16:49 -0400
          Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-24 07:38 -0700
            Re: Parsers for extensible grammars? George Neuner <gneuner2@comcast.net> - 2014-10-26 03:47 -0400
              Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-26 08:41 -0700
                Re: Parsers for extensible grammars? George Neuner <gneuner2@comcast.net> - 2014-10-26 14:36 -0400
                Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-26 12:37 -0700
                Re: Parsers for extensible grammars? George Neuner <gneuner2@comcast.net> - 2014-10-26 18:54 -0400
        Re: Parsers for extensible grammars? Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2014-10-25 02:02 +0000
          Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-25 01:56 -0700
            Re: Parsers for extensible grammars? Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2014-10-25 11:15 +0000
              Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-25 10:21 -0700
                Re: Parsers for extensible grammars? Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2014-10-26 01:05 +0000
                Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-25 19:37 -0700
  Re: Parsers for extensible grammars? Andrew Smallshaw <andrews@sdf.lonestar.org> - 2014-10-23 20:04 +0000
  Re: Parsers for extensible grammars? Les Cargill <lcargill99@comcast.com> - 2014-10-23 22:30 -0500
    Re: Parsers for extensible grammars? rickman <gnuarm@gmail.com> - 2014-10-25 13:36 -0400
      Re: Parsers for extensible grammars? Les Cargill <lcargill99@comcast.com> - 2014-10-25 13:14 -0500
        Re: Parsers for extensible grammars? rickman <gnuarm@gmail.com> - 2014-10-25 14:23 -0400
          Re: Parsers for extensible grammars? Les Cargill <lcargill99@comcast.com> - 2014-10-26 00:50 -0500
          Re: Parsers for extensible grammars? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2014-10-26 19:21 +0000
            Re: Parsers for extensible grammars? rickman <gnuarm@gmail.com> - 2014-10-26 15:29 -0400
  Re: Parsers for extensible grammars? Paul E Bennett <Paul_E.Bennett@topmail.co.uk> - 2014-10-24 09:56 +0100
    Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-24 07:46 -0700
      Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-25 19:54 -0700
        Re: Parsers for extensible grammars? Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> - 2014-10-26 12:15 +0000
          Re: Parsers for extensible grammars? Don Y <this@is.not.me.com> - 2014-10-26 09:02 -0700
            Re: Parsers for extensible grammars? rickman <gnuarm@gmail.com> - 2014-10-26 12:13 -0400
    Re: Parsers for extensible grammars? rickman <gnuarm@gmail.com> - 2014-10-25 13:35 -0400
      Re: Parsers for extensible grammars? Paul E Bennett <Paul_E.Bennett@topmail.co.uk> - 2014-10-26 01:29 +0100
        Re: Parsers for extensible grammars? rickman <gnuarm@gmail.com> - 2014-10-25 21:11 -0400

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