OpenEuphoria

Re: Programmatic use for 'type'

• Posted by Adam Weeden <adam_weeden at HOTMAIL.COM> Mar 01, 2000
• 445 views

----- Original Message -----
From: "Mike" <vulcan at WIN.CO.NZ>
To: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Sent: Wednesday, March 01, 2000 7:10 PM
Subject: Re: Programmatic use for 'type'


> OK. So my examples are not clear. Well it serves me right for simply
copying
> the code I was working on. I will try to explain it in generically.
>
> When a type routine is written (and typecheck) is on then the interpereter
> will call the 'type' whenever it finds a parameter with a type of the same
> name, ie:
>
> type CHAR(object x)
> .. code etc..
> end type
>
> function PrintAt(CHAR c)
> -- Before any code is executed in this routine the 'c' variable is sent
> -- to the CHAR type
> --
> -- code etc
> end function
>
> Thus a routine with several parameters will be processed in the same way,
> ie:
>
> function test(CHAR c, FLOAT f, INT i)
> -- A call is made to each type routine as is named
> -- in the parameter list before any other execution occurs
> --void=CHAR(c)
> --void=FLOAT(f)
> --void=INT(i)
>
> -- normal code
> end function
>
> Therefore my idea was to convert each var_sent_to_each_type_routine within
> the actual type routine and store the result in some accessible variable.
> This last variable could be then sent back to the calling routine as a
list
> of converted elements.
>
> At the top level a programmer could write a single line of code to convert
a
> sequence of data that needed it. I suppose one use would be in the
situation
> where some database info required conversion to a native format but where
> the information is currently in text format, ie
>
> sequence s
> s={
> "Brown",
> "Charlie",
> "555-4567",
> "20.0"
> "12"
> "44 Eastern Park Parade",
> "Hampton",
> "New jersey",
> "",
> ""
> }
>
> type STRING etc...
> type FLOAT..
>
>
> function convertFromDatabaseformat(
> STRING firstname,
> STRING lastname,
> TELEPHONENUMBER phonenumber,
> FLOAT weight,
> INT age,
> ADDR addressfirstline,
> ADDR addresssecondline,
> ADDR addressthirdline,
> ADDR addressfourthline,
> ADDR addressfifthline
> )
>
> s=convertFromDatabaseformat(
> s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[8], s[9], s[10])
>
> --s will now have the data in a native(or whateverelse) format
>
> I hope this explains what i meant
>
> yours truly
> Mike
>
> vulcan at win.co.nz
>
>
> -----Original Message-----
> From: Bernie Ryan <LockCityData at CS.COM>
> To: EUPHORIA at LISTSERV.MUOHIO.EDU <EUPHORIA at LISTSERV.MUOHIO.EDU>
> Date: Friday, 25 February 2000 22:36
> Subject: Re: Programmatic use for 'type'
>
>
> >On Fri, 25 Feb 2000 21:05:56 +1300, Mike <vulcan at WIN.CO.NZ> wrote:
> >
> >>Feedback is welcome.
> >
> >
> >>-------------------------------------------------------
> >>-- example 1
> >>-- NMEA.e convert NMEA sentences into Euphoria sequence
> >>--
> >>include get.e
> >>
> >>with type_check -- this line must not be moved or altered
> >>without warning
> >>
> >>object NMEASENTENCE -- this is the public variable
> >
> >  Mike:
> >
> >  I am sorry but I have no idea of what you are trying to explain.
> >
> >  I dont know what NMEA sentences are or what you are trying to do
> >
> >  in your example. It might help if you used an example that is
> >
> >  more generic and not so specialized. I am sure that this information
> >
> >  is valuable.
> >
> >  Thanks Bernie
> >
>

I'm actually working on something like this as addition to my record.e
include.  It will also support C records.  For use in windows programming.
No more struggling with pokes.

Adam Weeden