Re: Test of COMPILE,

From	Gerry Jackson <gerry@jackson9000.fsnet.co.uk>
Newsgroups	comp.lang.forth
Subject	Re: Test of COMPILE,
Date	2011-11-29 08:08 +0000
Organization	A noiseless patient Spider
Message-ID	<jb23tk$v41$1@dont-email.me> (permalink)
References	(11 earlier) <3d3726a9-7a66-46c8-8529-39e5814b59c6@gl2g2000vbb.googlegroups.com> <jb0igc$8qq$1@dont-email.me> <vdydnaz1PJtRS07TnZ2dnUVZ_hOdnZ2d@supernews.com> <jb0q8i$1a6$1@dont-email.me> <7ae13c5f-6b05-4c66-a1f6-4858fe9c3d60@b32g2000yqn.googlegroups.com>

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On 28/11/2011 22:22, Alex McDonald wrote:
> On Nov 28, 8:17 pm, Gerry Jackson<ge...@jackson9000.fsnet.co.uk>
> wrote:
>> On 28/11/2011 18:45, Andrew Haley wrote:
>>

>>> Gerry Jackson<ge...@jackson9000.fsnet.co.uk>    wrote:
>>>> On 28/11/2011 12:52, Alex McDonald wrote:
>>>>> On Nov 28, 11:39 am, Gerry Jackson<ge...@jackson9000.fsnet.co.uk>
>>>>> wrote:
>>
>>>> [...]
>>
>>>>>> IMO using the data stack as the control-flow stack and checking stack
>>>>>> depths before and after a colon definition is a legacy from the days of
>>>>>> resource-limited computers and has no place in a modern Forth. But then
>>>>>> I don't use resource-limited processors so I would say that. But then
>>>>>> again I get the impression that code for such processors tends to be
>>>>>> non-standard anyway.
>>
>>>>> The use of the data stack for control flow is really very simple to
>>>>> implement, since it doesn't require another stack.
>>
>>>> Which is why, presumably, the data stack was used in early
>>>> implementations of Forth. Implementing another stack is hardly difficult
>>>> - ease of use, particularly for beginners, ought to be a more important
>>>> consideration than a minor inconvenience for implementers.
>>
>>> How would a separate control-flow stack make things easier for anyone,
>>> let alone a beginner?  I really don't see this one.
>>
>> If the data stack is used for the control-flow stack, whatever the
>> compiler puts onto the data stack can get in the user's way e.g. see the
>> ANS Forth standard section A3.2.2.2 (actually misnumbered - ought to be
>> A3.2.3.2) where OF and ENDOF are implemented: "Note the maintenance of
>> the data stack to prevent interference with the possible control-flow
>> stack usage".
>
> Now you want it both ways!

Not at all, I was simply quoting a published example that demonstrated 
control-flow information obstructing use of the data stack - albeit a 
trivial example.

It doesn't get in the user's way; it gets
> in the implementers way, which is, as you say, a minor inconvenience.
>

[...]

-- 
Gerry

Thread

Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 08:20 -0800
  Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-26 11:36 -0600
    Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 09:44 -0800
    Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 12:14 -0800
      Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-26 15:08 -0800
        Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 16:03 -0800
          Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 16:12 -0800
          Re: Test of COMPILE, "Elizabeth D. Rather" <erather@forth.com> - 2011-11-26 17:10 -1000
            Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 19:33 -0800
              Re: Test of COMPILE, "Elizabeth D. Rather" <erather@forth.com> - 2011-11-26 18:28 -1000
              Re: Test of COMPILE, anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-27 14:02 +0000
                Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-27 08:42 -0800
              Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-27 09:08 -0800
          Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-27 04:21 -0600
  Re: Test of COMPILE, mhx@iae.nl (Marcel Hendrix) - 2011-11-26 18:41 +0200
    Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 09:51 -0800
      Re: Test of COMPILE, Bernd Paysan <bernd.paysan@gmx.de> - 2011-11-26 21:31 +0100
        Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 14:09 -0800
      Re: Test of COMPILE, anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-27 14:17 +0000
    Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-26 10:01 -0800
      Re: Test of COMPILE, mhx@iae.nl (Marcel Hendrix) - 2011-11-26 20:25 +0200
        Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-26 15:04 -0800
      Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 11:23 -0800
        Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-26 14:48 -0800
          Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 16:00 -0800
            Re: Test of COMPILE, Coos Haak <chforth@hccnet.nl> - 2011-11-27 02:09 +0100
              Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-26 18:11 -0800
                Re: Test of COMPILE, Gerry <gerry@jackson9000.fsnet.co.uk> - 2011-11-27 00:09 -0800
                Re: Test of COMPILE, Mark Wills <forthfreak@gmail.com> - 2011-11-27 00:47 -0800
                Re: Test of COMPILE, mhx@iae.nl (Marcel Hendrix) - 2011-11-27 10:48 +0200
                Re: Test of COMPILE, Mark Wills <forthfreak@gmail.com> - 2011-11-27 05:24 -0800
                Re: Test of COMPILE, Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-11-27 21:08 +0000
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-27 21:18 +0000
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-27 16:58 -0800
                Re: Test of COMPILE, anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-28 12:03 +0000
                Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-27 15:00 -0800
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-28 11:39 +0000
                Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-28 04:52 -0800
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-28 18:05 +0000
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-28 12:45 -0600
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-28 20:17 +0000
                Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-28 14:22 -0800
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-29 08:08 +0000
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-29 04:49 -0600
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-29 16:00 +0000
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-30 10:45 -0600
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-12-01 08:58 +0000
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-12-01 09:46 -0800
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-01 12:00 -0600
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-28 12:29 -0800
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-29 04:53 -0600
                Re: Test of COMPILE, anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-29 11:04 +0000
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-29 05:42 -0600
                Re: Test of COMPILE, anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-11-29 15:46 +0000
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-29 09:59 -0600
                Re: Test of COMPILE, "Elizabeth D. Rather" <erather@forth.com> - 2011-11-29 08:55 -1000
                Re: Test of COMPILE, "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2011-11-30 05:58 -0500
                Re: Test of COMPILE, Alex McDonald <blog@rivadpm.com> - 2011-11-30 03:07 -0800
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-30 07:54 -0800
                Re: Test of COMPILE, Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2011-11-29 15:50 +0000
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-29 10:01 -0600
                Re: Test of COMPILE, Tarkin <tarkin000@gmail.com> - 2011-11-29 13:07 -0800
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-29 17:04 -0800
                Re: Test of COMPILE, "Elizabeth D. Rather" <erather@forth.com> - 2011-11-29 15:52 -1000
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-29 21:29 -0800
                Re: Test of COMPILE, "Elizabeth D. Rather" <erather@forth.com> - 2011-11-29 19:52 -1000
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-30 07:49 -0800
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-30 10:19 -0600
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-11-30 12:19 -0800
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-30 14:31 -0600
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-12-01 10:36 -0800
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-01 13:08 -0600
                Re: Test of COMPILE, BruceMcF <agila61@netscape.net> - 2011-12-01 22:04 -0800
                Re: Test of COMPILE, Krishna Myneni <krishna.myneni@ccreweb.org> - 2011-11-28 05:05 -0800
                Re: Test of COMPILE, Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-11-28 06:25 -0600
              Re: Test of COMPILE, mhx@iae.nl (Marcel Hendrix) - 2011-11-27 08:01 +0200
                Re: Test of COMPILE, Coos Haak <chforth@hccnet.nl> - 2011-11-27 14:09 +0100

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