[#1403] 🐛 Fix Groovy compilation unit that tries to write in applicat…

[holajsh]

Fix Groovy compilation unit that tries to write in application root folder

• Restore the old reflection code that completely replace the OUTPUT phase of Groovy compilation unit
• Fix the compilation exception handling that was producing cast error as not checking properly exception type

Fixes

Fixes #1403

[tazmaniax]

@holajsh here was the previous pull request #1368 to fix this that was some how lost. Note the comment that was included in the previous fix - probably worth bringing in that whole change as it was. It's bit disconcerting that this previous PR was lost.

[holajsh]

@tazmaniax ok, I have added the comment again in my PR, thx. Hope indeed it won't be lost again ;)

[tomparle]

@holajsh here was the previous pull request #1368 to fix this that was some how lost. Note the comment that was included in the previous fix - probably worth bringing in that whole change as it was. It's bit disconcerting that this previous PR was lost.

@tazmaniax my bad, although I tried my best I think I'm responsible for having messed this code when I rebased the Python 3 PR with master, because I got confused with what was new or not, since it was a revert to a previous code. Sorry and thank you for having detected and fixed this !

[tazmaniax]

@tomparle ah that's good to know where the regression might have come from, thanks for the heads up. So do you think this was the only regression or could there be others?

[tomparle]

@tazmaniax to be honest, I tried to be careful with the rest of the code, but remembered the Groovy compilation part in particular because I was puzzled between new and old code. The rest should be ok.

[tazmaniax]

@tomparle ok great!