[antlr-interest] unary Operators

[Alexey Demakov]

> unary_exp
> :primary_exp
> | (LNOT^ | MINUS^ |PLUS^) primary_exp
>           ;

----- Original Message ----- 
From: "Henry Butowsky" <henryb at ntlworld.com>
To: <antlr-interest at antlr.org>
Sent: Wednesday, November 16, 2005 6:44 PM
Subject: [antlr-interest] unary Operators


> Hi Guys,
>     Im using a C like grammer and am having trouble getting unary 
> operators to work
> 
> I have in the parser
> 
> unary_exp
> :primary_exp
> | (LNOT^ | MINUS^ |PLUS^) primary_exp
>           ;
> 
> It works  OK with a single unary operator eg   !10 or -2.4
> But put them together and nogo e.g !!20 or -!0
> 
> Regards Henry
> 
>