[antlr-interest] Re: Updated version of C# codegen 2.7.2a2 now on ANTLR site

micheal_jor open.zone at virgin.net
Wed Jul 17 22:05:26 PDT 2002

--- In antlr-interest at y..., Dare Obasanjo <kpako at y...> wrote:
> --- Micheal J <open.zone at v...> wrote:
> > 
> > Thanks for the feedback report. I will look into
> > this. I haven't tested the
> > code generator's handling of C# preprocessing
> > directives embedded in code
> > blocks. I seem to remember off the top of my head
> > that ANTLR itself uses the
> > '#' character and that may be the source of the
> > behavior you are seeing but,
> > I'll have to verify that later.
> Thanks for looking into it. I also had a problem with
> lexer rules like 
> protected
> STRING returns [String s]
>     :   (.)+ { s=$getText; }
>     ;
> because it complained about s being an unitialized
> variable. The following works however
> protected
> STRING returns [String s]{
> s = null; 
> } :   (.)+ { s=$getText; }
>     ;

I have noticed this too. It is an artifact of C#'s rules for variable 
definition and usage really (admittedly triggered by ANTLR code 
generation style).

Can't see any easy way to pre-initialize arbitary variable 
declarations within the code generator so I guess I just need to add 
some specific info about it to the csharp runtime document.



PS    I found your "C# from a Java dev's precpective" document 
helpful. Helped with the C# codegen's development as it 
happens....  ;-)


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