1. Introducing E! version 1.0
Yeehaw! Here's something I think you all are going to love!
I actually got this idea a few weeks ago, but only recently finished
implementing
it. Basically, E! is an interactive Euphoria interpreter. That's right... you
get a DOS screen
and a prompt, and can enter and execute Euphoria commands one at a time. Even
use it
in a Win95/NT window as an overpowered calculator if you like.
No, I didn't actually write an interpreter from scratch. I actually "cheated",
since it uses
the standard public edition (or complete, if you own it) version of Euphoria
released by
RDS. Once you take a look at it and grasp the concept, you'll see how I managed
to
write it in *very* little time.
So how does it work?
-- Simply run the E!.EX file with your copy of Euphoria. It needs no include
files or
libraries, and should be completely 2.0 compatible.
-- At the prompt, enter any Euphoria command you like. Note that illegal
commands
will obviously crash things, and that "x += 1" won't work if you're
running on version
2.0 of Euphoria. (You will also probably want to stay away from graphics
commands.)
-- When defining a function, procedure or type, you can use multiple lines.
The program
will cache everything until the "end" statement, then execute the
declaration at once.
An 'f', 'p', or 't' will appear before the prompt to indicate that input
is being cached. There
is no need to declare the routines as global... all of them are
automatically "globalized".
-- When constructing a "while" or "for" loop, or an "if" statement, you can
use multiple
lines. Nesting is taken into account, and all input is cached until an
"end", etc. is entered
at the outer level. A number will appear before the prompt, indicating the
level of nesting
that is currently active. (In other words, if you enter "if (x) then", a 1
will appear before the
prompt. If you then enter a "if (y) then", a 2 will appear before the
prompt. You will then
need to enter "end if" twice in order for the first "if" statement to be
complete.) Note that
only the "end" is checked for, not the word that comes after it. This may
be addressed in
future versions.
-- When declaring variables or constants, you MUST declare them as global if
you want to
make any use of them. This will be addressed in future versions.
-- You may include any file by simply entering "include filename.e"
-- To quit the program, enter "bye", and everything will shut down smoothly.
(There's also an
added "help" command, but right now it doesn't do anything.)
-- All statements are logged. Once you're done with your session, you will
find "LOG.E" in
your C:\ (root) directory. It will contain all of the statements and
comments you entered in
your last session (excluding "bye" and "help".) If you ever want to
reenter all of your
commands from the last session, simply rename the file to something else
(like "oldlog.e"),
then run E!, and make your first input: "include c:\oldlog.e".
-- If you experience a crash, you may find an XQnnnnnn.e file in your C:\
directory, a
temporary file used by the program. You can just delete it.
-- Finally, the program can only handle 1,000,000 total inputs (an "include"
or cached
statement is considered one input). Hopefully, that'll last most folks for
the entire length
of their sessions...
Tell me what you think. I'll try to work on enhancing it, but I still need to
finish my 3D engine,
so don't expect rapid development (no pun intended). Also, there's no
documentation for it
yet; I'll probably put the above comments into a text file and submit it with
the code to the
website this weekend.
Have fun,
Rod Jackson
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`
end
2. Re: Introducing E! version 1.0
look at the end of your message on the list server file. It just shows up on
as a bunch of characters that we can't read.
Bernie
3. Re: Introducing E! version 1.0
Did the attatchment not go through? What email software are you using? I
get a copy of everything I send, and I received the file just fine. Oh
well, sorry for those who got a bunch of garbage... I'll be sending the
file to Rob this weekend, so it should hopefully be up on the website by
next week...
Rod Jackson
----------
From: Bernie Ryan[SMTP:bwryan at PCOM.NET]
Sent: Friday, June 04, 1999 12:31 PM
To: EUPHORIA at LISTSERV.MUOHIO.EDU
Subject: Re: Introducing E! version 1.0
look at the end of your message on the list server file. It just shows up
on
as a bunch of characters that we can't read.
Bernie
4. Re: Introducing E! version 1.0
Rod Jackson wrote:
> Did the attatchment not go through?
I got a copy, but I tried this:
> integer x
> x = 12
and got the error:
x has not been declared
Did you make any last minute changes to the code before sending it out? 
-- David Cuny
5. Re: Introducing E! version 1.0
I am using MS IE5 and reading the messages directly off of the list
server. I am not sending or receiving email except through the LIST SERVER
Go to the list server with your browser and look at your message as it is
posted and you will see what I am talking about.
Bernie
6. Re: Introducing E! version 1.0
No, I didn't make changes (although I'm not saying it's guaranteed
bug-free). The reason you got the error is because variables and
constants must be declared as global; I could have had the program
"globalize" variable declarations, but (1) I was trying to get
something that worked done as soon as I could, and (2) globalizing
user-defined types looks like it's going to be somewhat difficult.
Again though, I plan on doing something about it in the next version.
Rod Jackson
----------
From: Cuny, David[SMTP:David.Cuny at DSS.CA.GOV]
Sent: Friday, June 04, 1999 1:37 PM
To: EUPHORIA at LISTSERV.MUOHIO.EDU
Subject: Re: Introducing E! version 1.0
Rod Jackson wrote:
> Did the attatchment not go through?
I got a copy, but I tried this:
> integer x
> x = 12
and got the error:
x has not been declared
Did you make any last minute changes to the code before sending it out?
-- David Cuny
7. Re: Introducing E! version 1.0
Declaration must "global" according to the author.
> global integer x
> x = 12
Regards,
--- "Cuny, David" <David.Cuny at DSS.CA.GOV> wrote:
> Rod Jackson wrote:
>
> > Did the attatchment not go through?
>
> I got a copy, but I tried this:
>
> > integer x
> > x = 12
>
> and got the error:
>
> x has not been declared
>
> Did you make any last minute changes to the code
> before sending it out?
>
> -- David Cuny
>
_________________________________________________________
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Get your free @yahoo.com address at http://mail.yahoo.com
8. Re: Introducing E! version 1.0
>I got a copy, but I tried this:
>
> > integer x
> > x = 12
>
>and got the error:
>
> x has not been declared
>
>Did you make any last minute changes to the code before sending it out?
I found this, hidden cleverly within Rod's original post... :)
-- When declaring variables or constants, you MUST declare them as global
if you want to
make any use of them. This will be addressed in future versions.
Kind of an odd limitation, but this *is* the first release.
I can't even get this thing to run -- it gets to the opening screen and
prompt, but when I type in something and press enter I get a "bad file
number (-1)" error. Apparently, the permissions on my computer won't allow
me to create that temporary .E file at the root of the C:\ drive. Here's the
complete contents of the EX.ERR file:
T:\CMD\E!.EX:309 in procedure QwertyJunK_Main()
bad file number (-1)
xqStatementToLog = {}
xqStatementToEx = {}
xqnext_fn = -1
.. called from T:\CMD\E!.EX:336
Global & Local Variables
T:\CMD\E!.EX:
xqCurrFNum = 0
xqlog_fn = -1
xqPrompt = 32' '
xqtemp = {48'0',48'0',48'0',48'0',48'0',48'0'}
Be seeing you,
Gabriel Boehme
9. Re: Introducing E! version 1.0
Well, it does appear to be a problem with writing the temporary file
(and the log file, too.) I'm sorry though, I'm at a loss to explain
the WHY of it. Just in case it may help, the filenames the program
uses are pretty much hardwired. In other words, it doesn't just
write out to 'log.e', but specifically to 'c:\log.e'. If T: is the
name of the drive you normally use, you may want to try changing all
references to "c:\" to "t:\", just to see if it works.
Also, are you running under pure DOS, NT, or Win95? Hmmm... with
some more info, I think I might be able to work around this.
Rod Jackson
----------
From: Boehme, Gabriel[SMTP:gboehme at POBOXB1.HQ.MSMAIL.MUSICLAND.COM]
Sent: Friday, June 04, 1999 2:20 PM
To: EUPHORIA at LISTSERV.MUOHIO.EDU
Subject: Re: Introducing E! version 1.0
<snip>
I can't even get this thing to run -- it gets to the opening screen and
prompt, but when I type in something and press enter I get a "bad file
number (-1)" error. Apparently, the permissions on my computer won't allow
me to create that temporary .E file at the root of the C:\ drive. Here's the
complete contents of the EX.ERR file:
T:\CMD\E!.EX:309 in procedure QwertyJunK_Main()
bad file number (-1)
xqStatementToLog = {}
xqStatementToEx = {}
xqnext_fn = -1
. called from T:\CMD\E!.EX:336
Global & Local Variables
T:\CMD\E!.EX:
xqCurrFNum = 0
xqlog_fn = -1
xqPrompt = 32' '
xqtemp = {48'0',48'0',48'0',48'0',48'0',48'0'}
Be seeing you,
Gabriel Boehme
10. Re: Introducing E! version 1.0
Urg. I guess I shoulf RTFM, instead of just glancing through it. 
Thanks!
-- David Cuny
11. Re: Introducing E! version 1.0
I'd like to try this thing out, but apperantly subscribed to the list about
10 minutes too late. can someone send me a copy?
-Allen
On Fri, 4 Jun 1999 14:20:00 -0500, Boehme, Gabriel wrote:
> >I got a copy, but I tried this:
> >
> > > integer x
> > > x = 12
> >
> >and got the error:
> >
> > x has not been declared
> >
> >Did you make any last minute changes to the code before sending it out?
>
> I found this, hidden cleverly within Rod's original post... :)
>
> -- When declaring variables or constants, you MUST declare them as
global
> if you want to
> make any use of them. This will be addressed in future versions.
>
> Kind of an odd limitation, but this *is* the first release.
>
>
> I can't even get this thing to run -- it gets to the opening screen and
> prompt, but when I type in something and press enter I get a "bad file
> number (-1)" error. Apparently, the permissions on my computer won't
allow
> me to create that temporary .E file at the root of the C:\ drive. Here's
the
> complete contents of the EX.ERR file:
>
> T:\CMD\E!.EX:309 in procedure QwertyJunK_Main()
> bad file number (-1)
> xqStatementToLog = {}
> xqStatementToEx = {}
> xqnext_fn = -1
>
> .. called from T:\CMD\E!.EX:336
>
> Global & Local Variables
>
> T:\CMD\E!.EX:
> xqCurrFNum = 0
> xqlog_fn = -1
> xqPrompt = 32' '
> xqtemp = {48'0',48'0',48'0',48'0',48'0',48'0'}
>
>
> Be seeing you,
> Gabriel Boehme
What has the near functionality of a PDA at a tenth the cost?
...Give Up?
The Game Boy
DragonEagle's Gameboy Developement Page
http://home.earthlink.net/~asoard/gameboy
_______________________________________________________
Get your free, private email at http://mail.excite.com/
12. Re: Introducing E! version 1.0
Yeah, I changed all "c:\" references to "t:\", and it worked just fine. I'm
running under NT, and it's on a work machine, so I guess the LAN folks who
set up the permissions didn't want me writing to the root directory of the C
drive. :)
Pretty spiffy! Congrats on a job well done.
----------
From: Roderick Jackson
To: EUPHORIA; Boehme, Gabriel
Subject: RE: Introducing E! version 1.0
Date: Friday, June 04, 1999 2:54PM
Well, it does appear to be a problem with writing the temporary file
(and the log file, too.) I'm sorry though, I'm at a loss to explain
the WHY of it. Just in case it may help, the filenames the program
uses are pretty much hardwired. In other words, it doesn't just
write out to 'log.e', but specifically to 'c:\log.e'. If T: is the
name of the drive you normally use, you may want to try changing all
references to "c:\" to "t:\", just to see if it works.
Also, are you running under pure DOS, NT, or Win95? Hmmm... with
some more info, I think I might be able to work around this.
Rod Jackson
