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From: "jistone at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sources.redhat.com
Subject: [Bug translator/10054] improve $expr->foo->bar->zoo error messages
Date: Thu, 16 Apr 2009 16:21:00 -0000	[thread overview]
Message-ID: <20090416162057.4591.qmail@sourceware.org> (raw)
In-Reply-To: <20090410173925.10054.fche@redhat.com>


------- Additional Comments From jistone at redhat dot com  2009-04-16 16:20 -------
(In reply to comment #1)
> Created an attachment (id=3887)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=3887&action=view)
> first stage patch
> 
> With the patch,  the correct local variable  name will be focused instead of
> top one.
[...]
> 'foo' replaces the previous 'file'.  And the remains parts are "identifier
> $file" and the position of "^".  Seems not easy to change them since they are
> from e->tok.

This is a good first step.  However, I would rather see an error "unable to find
member ..." generated at the point of failure.  We should just make the mode of
translate_components be succeed-or-throw, and then the callers can be simpler.

For getting the right token, I would suggest changing the components vector's
element-type into a real struct (instead of just a std::pair), and then the
parsing token can be saved there.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10054

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  parent reply	other threads:[~2009-04-16 16:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-10 17:39 [Bug translator/10054] New: " fche at redhat dot com
2009-04-16  9:41 ` [Bug translator/10054] " wenji dot huang at oracle dot com
2009-04-16 15:37 ` fche at redhat dot com
2009-04-16 16:21 ` jistone at redhat dot com [this message]
2009-05-09  1:50 ` jistone at redhat dot com
2010-04-28 22:14 ` jistone at redhat dot com

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