PROPOSAL: open and close brace optional for single statement try, catch, finally, method declaration

Tom Hawtin Thomas.Hawtin at Sun.COM
Mon Mar 30 08:07:04 PDT 2009

Neal Gafter wrote:
> On Mon, Mar 30, 2009 at 6:25 AM, Tom Hawtin <Thomas.Hawtin at> wrote:
>> This is similar to the dangling-else ambiguity.
> Perhaps, but the Java grammar does not have a dangling-else ambiguity.

I think that is inappropriately pedantic. JLS 3rd Ed, 14.5/p368: 'the if 
statement of the Java programming language suffers from the so-called 
"dangling else problme,".' I don't know how parser implementations tend 
to handle the issue.

>  The grammar was carefully written to be unambiguous.  This proposal
> would make the grammar ambiguous.

The proposal is insufficiently detailed to tell whether the grammar 
would become ambiguous. A more detailed version could use the same hack 
to remove the ambiguity (although multiple usage of the hack grows the 
grammar non-linearly).

Tom Hawtin

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