[Ironruby-core] Raising Exceptions

Peter Bacon Darwin bacondarwin at googlemail.com
Thu Dec 6 14:39:53 EST 2007


Thanks all for the clarification.  Will redo the code I have been writing to
use RubyExceptions where possible.
Cheers,
Pete

-----Original Message-----
From: ironruby-core-bounces at rubyforge.org
[mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Tomas Matousek
Sent: Thursday,06 December 06, 2007 19:31
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Raising Exceptions

Yes, use RubyExceptions where possible. Otherwise just throw corresponding
BCL exception. We may enrich RubyException class with more commonly thrown
exceptions. When we do so, we will search and replace affected throws across
the library - that's easy. So if you don't find the exception that should be
thrown in this class feel free to just throw the BCL exception directly. The
reasons for using RubyExceptions are clarity, code reuse and consistency in
error messages. RubyExceptions class should be one of the few places where
Ruby to BCL exception mapping takes place - methods on RubyExceptions should
be named after Ruby exception classes, so the library writer doesn't need to
think about the mapping. The class needs some refactoring though and it
should probably be moved to the library. It's on my TODO list to do so.

Tomas

-----Original Message-----
From: ironruby-core-bounces at rubyforge.org
[mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of John Messerly
Sent: Thursday, December 06, 2007 11:07 AM
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Raising Exceptions

Peter Bacon Darwin:

> And to add further confusion there are also
> RubyExceptions.CreateXXXError methods available.
>
> What to use?

I think the convention is to use the RubyExceptions.CreateXXXError methods
(although I'm not clear on the reason).

- John

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