OpenEuphoria

Re: Modified Interpreter

• Posted by jbrown105 at speedymail.org Jul 13, 2003
• 465 views

On Sun, Jul 13, 2003 at 06:07:15PM +0200, Juergen Luethje wrote:
> 
> 
> Hi Jim, you wrote:
> 
> > On Sat, Jul 12, 2003 at 04:44:38PM +0200, Juergen Luethje wrote:
> >>
> >> Me wrote:
> >>
> >> <snip>
> >>
> >>> Please allow me a "stupid" question: Regarding the interpreter, what is
> >>> the problem with enabling it to execute sequences/strings?
> >>> The Eu interpreter already is able to interpret Eu code. 
> >
> > "Interpreter" ... but not the translator.
> >
> >>> ATM, it does so at "interpretation time". Is it really difficult, to let
> >>> it also do so at run time?
> >
> > For the translator, yes.
> 
> Oops... I had forgotten about the translator.

> 
> > We could just say that 'execute()' is not supported by the translator,
> 
> Yes, that would be a possibility. Or how about this idea:
> 
> There could be a .DLL/.SO, that works very similar to exw.exe/exu, but
> just executes strings instead of ascii files.
> Any interpreted, non-bound, bound, or translated program then can use the
> function(s) in the .DLL/.SO to execute strings containing Eu code.
> 
> One disadvantage is, that this would even more increase the number of
> products, Rob would have to take care of.
> But maybe someone who bought the Euphoria source code product would like
> to build such a .DLL/.SO (provided it's allowed by the Euphoria
> Interpreter Source Code License).
> Just an idea ...

Also a lot of people do not like the idea of having an interpreter in the
translated program (the overhead would be HUGE)...I discovered this myself
when discussing how to implement an eval statement for compiled EU programs.

> 
> > but
> > RC has already gone on record saying that he doesn't like that idea.
> > (iirc anyways).
> 
> Oh, I didn't know that.

> 
> >> I just wrote a litte "interpreter" that executes code recursively. 
> >> Just save the three attached files, and run 'interpret.ex'.
> >> Is Euphoria too complex, to use this principle?
> >
> > I haven't looked at your code yet ... but I will.
> >
> > It should be noted that it is possible (in fact, relatively easy) to use
> > eu.ex itself for this ...
> 
> Hmm? What is "eu.ex"?

An euphoria interpeter written by DC. No namespace support in it at all
btw, and adding it is a non-trivial thing to do.

> 
> > someone has already done so iirc. Futhermore,
> > I was trying to figure out how to modify eu.ex to support eval() ....
> > its not too copmlicated with the way eu.ex parses code. If eu.ex can do
> > it, then surely the interpreter can.
> 
> Best regards,
>    Juergen
> 
> -- 
>  /"\  ASCII ribbon campain  |    |\      _,,,---,,_
>  \ /  against HTML in       |    /,`.-'`'    -.  ;-;;,_
>   X   e-mail and news,      |   |,4-  ) )-,_..;\ (  `'-'
>  / \  and unneeded MIME     |  '---''(_/--'  `-'\_)
> 
> 
> 
> TOPICA - Start your own email discussion group. FREE!
> 
> 

-- 
 /"\  ASCII ribbon              | http://www.geocities.com/jbrown1050/
 \ /  campain against           | Linux User:190064
  X   HTML in e-mail and        | Linux Machine:84163
 /*\  news, and unneeded MIME   | http://verify.stanford.edu/evote.html