[antlr-interest] Check for end of token stream when parser finishes.

[shibinck]

Hi,You could use the EOF token to match the whole input
test: exp EOF;
-shibin


On Tue, Jun 30, 2009 at 5:29 AM, Gyanit Singh <gyanit at gmail.com> wrote:

> Hi all,
>
> I have a simple grammar
> ----------------------
> grammar test;
> test     : exp;
> exp    : ONE ('+' ONE)* ;
> ONE    : '1';
> -----------------------
>
> if you try to parse "1+11" the parser matches test and expr to "1+1" and
> ignores the last "1". Is there a way to throw an exception when this
> happens.
>
> More abstractly, when the rule is kleene closure (or plus) and it ends
> leading to the end of the main rule (for the above example rule "test") and
> still there are tokens remaining then how to throw and exception instead of
> partial match. In other words, after the parsing is done how to check
> whether the token stream has ended or not?
>
> thanks,
> gyanit.
>
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