From: Marco Antoniotti
Subject: Question about ABCL conditions and Java Exceptions
Date: 
Message-ID: <1193742665.403550.97160@19g2000hsx.googlegroups.com>
Hi

sorry for the noise, but I need a quick answer from the ABCL
developers.  I tried the mailing list, but the responses are not
coming (*).

I would like to embed ABCL in a Java program.  My question is about
conditions and exceptions.  I understand that I can evaluate a CL
expression calling the appropriate Java method, but I have not figured
out how a call to ERROR would be handled.  Better: it seems to me that
I have no way to get a Java exception (optimal situation) or an error
code in the embedding Java out of such call.

Any help would be appreciated.

Thanks

--
Marco Antoniotti
From: Marco Antoniotti
Subject: Re: Question about ABCL conditions and Java Exceptions
Date: 
Message-ID: <1193745104.893878.324510@z9g2000hsf.googlegroups.com>
On Oct 30, 12:11 pm, Marco Antoniotti <·······@gmail.com> wrote:
> Hi
>
> sorry for the noise, but I need a quick answer from the ABCL
> developers.  I tried the mailing list, but the responses are not
> coming (*).
>
> I would like to embed ABCL in a Java program.  My question is about
> conditions and exceptions.  I understand that I can evaluate a CL
> expression calling the appropriate Java method, but I have not figured
> out how a call to ERROR would be handled.  Better: it seems to me that
> I have no way to get a Java exception (optimal situation) or an error
> code in the embedding Java out of such call.
>
> Any help would be appreciated.
>
> Thanks
>
> --
> Marco Antoniotti

(*)  I understand that people have a lot to do these days.  It's me
who is in a bit of a hurry.  No criticism was intended for the ABCL
people.
From: Alex Mizrahi
Subject: Re: Question about ABCL conditions and Java Exceptions
Date: 
Message-ID: <47271e91$0$90264$14726298@news.sunsite.dk>
 MA> sorry for the noise, but I need a quick answer from the ABCL
 MA> developers.  I tried the mailing list, but the responses are not
 MA> coming (*).

i do not see you message on gmane, probably you need to register on 
sourceforge's mailing lists or something.

 MA> I would like to embed ABCL in a Java program.  My question is about
 MA> conditions and exceptions.  I understand that I can evaluate a CL
 MA> expression calling the appropriate Java method, but I have not figured
 MA> out how a call to ERROR would be handled.
 MA>   Better: it seems to me that I have no way to get a Java exception
 MA> (optimal situation) or an error code in the embedding Java out of such
 MA> call.

no, eval (and many other functions in ABCL) can throw ConditionThrowable:

Interpreter.java:
    public LispObject eval(String s) throws ConditionThrowable


Peter posted a code on mailing list about a month ago:

        try
          {
            Interpreter interpreter = Interpreter.createInstance();
            interpreter.eval("(load \"foo.abcl\")");
            interpreter.eval("(bar)");
          }
        catch (Throwable t)
          {
            t.printStackTrace();
          }

you can as well catch ConditionThrowable, so you'll be able to retrieve Lisp 
Condition.

also, i'd recomend to actually call functions directly rather than using 
eval, unless you really want to use eval. you can find some info in mailing 
list archives.
comp.lang.lisp / 2007 / oct