Re: GDK retrofit for Java functional interfaces

[Daniel Sun <su...@apache.org>]

Parrot has to trade off parsing performance against friendly error message... but we have been trying to tweak error messages.

Cheers,
Daniel Sun
On 2021/04/29 15:55:52, OCsite <oc...@ocs.cz> wrote: 
> Christopher,
> 
> > On 29 Apr 2021, at 16:57, Christopher Smith <ch...@gmail.com> wrote:
> > Parrot has reduced my frustration levels about 15% across the board
> 
> did it indeed? Weird. In my case, the very opposite is true; compare please e.g. the problem outlined below (which applies in 3.0.8 just as well) — it makes finding source problems extremely inconvenient :(
> 
> All the best,
> OC
> 
> > Begin forwarded message:
> > 
> > From: "ocs@ocs.cz" <oc...@ocs.cz>
> > Subject: misplaced else inside a closure causes wrong (or at least pretty weird) error placement with Parrot
> > Date: 19 May 2020 at 22:36:06 CEST
> > To: users@groovy.apache.org
> > Reply-To: users@groovy.apache.org
> > 
> > Hi there,
> > 
> > perhaps this is a known or well-understand issue, but worth reporting IMHO (not sure whether worth a ticket; let me please know should I create one for this):
> > 
> > ===
> > 281 ocs /tmp> <q.groovy 
> > class q {
> >  def foo(val) {
> >    10.times {
> >      println "Essentially anything..."
> > 
> > 
> > 
> >      println "... can be here, the longer this code, the worse"
> >      else println "This is wrong, but see the error report!"
> >    }
> >  }
> > }
> > 282 ocs /tmp> /usr/local/groovy-2.4.17/bin/groovyc q.groovy
> > org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> > q.groovy: 9: unexpected token: else @ line 9, column 7.
> >         else println "This is wrong, but see the error report!"
> >         ^
> > 1 error
> > 283 ocs /tmp> /usr/local/groovy-3.0.3/bin/groovyc q.groovy 
> > org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> > q.groovy: 3: Unexpected input: '{'; Expecting RBRACE @ line 3, column 14.
> >       10.times {
> >                ^
> > 1 error
> > 284 ocs /tmp> 
> > ===
> > 
> > All the best,
> > OC
> > 
> 
>