Re: [Chicken-users] Fwd: Newbie question - Converting SKILL/Scheme to C.

[Yaron Kretchmer]

Hi Ray.
My apologies.  Let me explain some more.

I have a program written in a language called SKILL, which is a
variant of Scheme. SKILL is used in semiconductor design to describe
the layout of transistors, and is described briefly in
http://en.wikipedia.org/wiki/Cadence_SKILL

I am interested in translating this SKILL program to C, and thought I
could use Chicken to accomplish that. I've installed and ran Chicken
on the various SKILL programs I have, and some of the trivial programs
compiled OK, whereas some of the more complex examples failed. This
might be related to the Syntax differences between SKILL and Scheme,
or is related to my incorrect usage of Chicken.


Is the above within the confines of this group? If it is, I'll send
the code that was causing me problems, and would appreciate any help,

Best regards
Yaron


On Tue, Sep 1, 2009 at 6:45 PM, Nicholas "Indy" Ray<address@hidden> wrote:
> Sorry, But I don't think the HTML was the major problem with the email.
>
> First of all it's not clear what you are trying to do.
>
> Second of all without any code to see what's generating you're errors
> it's hard to diagnose.
>
> Also things like
>
> "(() if (opptapObj->tap == "None" then return (nil) else return (t)))"
>
> and
>
> "/* comment
> and more comment
> end of comment */"
>
> and
>
> "prefix = substring(dev 1 2)"
>
> Looks nothing like Scheme code, much more like C code. Are you sure
> the code is Scheme at all??
> Additionally this isn't exactally a good mailing list for converting
> code from SKILL to C as this is a Chicken Scheme mailing list, and
> unless Chicken is some how involved, neither C or Skill seems to
> apply.
>
> Indy
>
> On Tue, Sep 1, 2009 at 6:10 PM, Yaron Kretchmer<address@hidden> wrote:
>> Here's a resend with no HTML :P
>> ------------------------------- begin
>> resend-------------------------------------
>>
>> Hi All.
>> Just joined the group, so forgive my newbie questions :)
>>
>> I have some legacy code written in SKILL (a variant of Scheme) which
>> I'm trying to convert to C.
>>
>> I tried compiling the code , and got several different error message,
>> and was wondering whether somebody could suggest a solution  for each
>> :
>>
>> =======================begin 
>> problems==========================================
>> Problem 1 - substring
>> *) The code uses the "substring" function which the compiler seems to
>> have a problem with. So lines like
>> prefix = substring(dev 1 2)
>> create compiler error message like
>> Syntax error: illegal atomic form
>>
>>        ()
>>
>>        Expansion history:
>> ...
>>        <syntax>                (dev 1 2)       <--
>>
>> problem 2 - multi-line comments
>> *) The compiler doesn't recognize multi-line comments
>> /* comment
>> and more comment
>> end of comment */
>>
>> problem 3 - Unknown object methods
>> *) The code refers to object methods/properties  through the use of
>> the "->" operator. The compiler doesn't like.
>>  prog( ()
>>    if( opptapObj->tap == "None" then return(nil) else return(t))
>>  ) ;prog
>>
>>  generates error
>> Syntax error: illegal atomic form
>>
>>        ()
>>
>>        Expansion history:
>>
>>        ...
>>        <syntax>                (() if (opptapObj->tap == "None" then
>> return (nil) else return (t)))    <--
>> ==================End problems===============================================
>>
>> Thanks a lot!
>> Yaron
>>
>>
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>>
>