[antlr-interest] Exceptions and finally blocks
Terence Parr
parrt at cs.usfca.edu
Sun Mar 12 11:22:31 PST 2006
hi,
I'm running into this very strange Java behavior, which I believe
is considered normal but it does not give us what we want. when an
exception is thrown in a method it still tries to execute the finally
of course. However, when an exception occurs usually it means that
this stuff in the finally clause will not execute without its own
exception. This second exception forces the first exception to be
lost. It is very confusing because you see an exception in the
finally when all of those variables should be okay but you get null
pointer.
should I add the following:
catch (Exception e) {
..handle exception..perhaps noUserFinally=true;
throw e;
}
finally {
usual cleanup
if ( !noUserFinally ) { user stuff }
...
}
Hmm.... this is turning out to be a serious problem for me as I
developed my Mantra language with version three. Very very
annoying. Suggestions?
Ter
More information about the antlr-interest
mailing list