Re: Implementing ." in forth

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: Implementing ." in forth
Date	2012-08-30 13:00 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2012Aug30.150009@mips.complang.tuwien.ac.at> (permalink)
References	(2 earlier) <k17ojv$6ei$1@dont-email.me> <2012Aug24.164144@mips.complang.tuwien.ac.at> <k19hgk$qp7$1@dont-email.me> <2012Aug25.110546@mips.complang.tuwien.ac.at> <k1ldjo$tqf$1@dont-email.me>

Show all headers | View raw

Arnold Doray <invalid@invalid.com> writes:
>On Sat, 25 Aug 2012 09:05:46 +0000, Anton Ertl wrote:
>
>> STATE-smart words generally don't do the right thing when ticked and
>> executed (see <http://www.taygeta.com/forth/a0007.htm>).
>
>Thank you for the link. 
>
>>>
>>>
>>>So my question is in what cases do the amendations to TICK, COMPILE-TICK
>>>and POSTPONE become necessary?
>> 
>> : ]execute[ ] execute postpone [ ;
>> 
>
>I assume you meant: 
>
>: ]execute[ ` ] execute ` [ ; 

I meant

: ]execute[ ] execute postpone [ ;

and that's what I wrote.  Why should I POSTPONE ] ?

>> ' ."" ]execute[ Hello World"
>
>Is this example meaningful? It appears to coerce the compilation 
>semantics of a word outside a context of defining a new word... 

How do you get the idea that compilation semantics play of ."" a role
here?  ."" is ticked, its compilation semantics do not come into play.

>> test ]execute[ Hello World"
>
>Not sure what you mean by this? Could you correct?

The point of these examples are to show cases where a STATE-smart .""
behaves differently from one that has [.""] as compilation semantics
and (."") as interpretation semantics.  I.e., to answer your question

|So my question is in what cases do the amendations to TICK, COMPILE-TICK 
|and POSTPONE become necessary? 

>> : test4 postpone ." ;
>> : test5 [ test4 hello world" ] ; immediate
>> 
>> - anton
>
>I'm assuming TEST4 is immediate while TEST5 is not ... this seems to work 
>for me as expected... 

It does not matter here whether TEST4 or TEST5 are immediate.

I don't know what you expect, but this is another case where the
behaviour of the STATE-smart ."" differs from the combined-semantics
one.

- 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 2012: http://www.euroforth.org/ef12/

Thread

Implementing ." in forth Arnold Doray <invalid@invalid.com> - 2012-08-23 14:12 +0000
  Re: Implementing ." in forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-23 14:45 +0000
    Re: Implementing ." in forth Arnold Doray <invalid@invalid.com> - 2012-08-24 11:30 +0000
      Re: Implementing ." in forth Josh Grams <josh@qualdan.com> - 2012-08-24 12:56 +0000
      Re: Implementing ." in forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-24 14:41 +0000
        Re: Implementing ." in forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-24 16:45 +0000
        Re: Implementing ." in forth Arnold Doray <invalid@invalid.com> - 2012-08-25 03:41 +0000
          Re: Implementing ." in forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-25 09:05 +0000
            Re: Implementing ." in forth Arnold Doray <invalid@invalid.com> - 2012-08-29 15:48 +0000
              Re: Implementing ." in forth Coos Haak <chforth@hccnet.nl> - 2012-08-29 21:19 +0200
              Re: Implementing ." in forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-30 13:00 +0000
  Re: Implementing ." in forth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-08-23 12:00 -0500
  Re: Implementing ." in forth Spam@ControlQ.com - 2012-08-23 14:16 -0400
  Re: Implementing ." in forth Mark Wills <markrobertwills@yahoo.co.uk> - 2012-08-23 14:37 -0700
  Re: Implementing ." in forth "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-08-23 19:37 -0400
  Re: Implementing ." in forth hughaguilar96@yahoo.com - 2012-08-24 00:06 -0700
    Re: Implementing ." in forth Arnold Doray <invalid@invalid.com> - 2012-08-24 11:32 +0000
      Re: Implementing ." in forth Doug Hoffman <glidedog@gmail.com> - 2012-08-24 08:33 -0400
  Re: Implementing ." in forth jim@rainbarrel.com - 2012-08-24 09:15 -0700
  Re: Implementing ." in forth Chris Hinsley <chris.hinsley@gmail.com> - 2012-08-25 15:15 +0100

csiph-web