[antlr-interest] Re: C# generator, tree & bug report
micheal_jor
open.zone at virgin.net
Tue Sep 3 17:31:46 PDT 2002
--- In antlr-interest at y..., "Lloyd Dupont" <lloyd at g...> wrote:
> Hi folks !
>
> I was using ANTLR to write a little code generator.
> C# is the natural language of my programs.
I presume you mean that C# is the implementation language right?.
As opposed to the source language for your lexer/parser or indeed the
target language you will be generating from your project.
> So I though a C# Parser would be more powerfullto do some of my app
specific
> stuff.
> I also use customized AST tree construction in my parser.
> something like :
> args
> :(
> ! LPAR RPAR { #args = #[VOID]; }
> |! (LPAR VOID RPAR)=> LPAR VOID RPAR { #args = #[VOID]; }
> | LPAR! argList RPAR!
> )
> { #args = #([PARAMS, "args"], #args); }
> ;
> but I have some trouble with this contruction semantic:
> "#args = #[VOID];"
>
> as it generate:
> args_AST = (AST)astFactory.create(VOID);
> whereas it should generate (in C#, as it is correct in Java)
> args_AST = (AST)astFactory.create(MyTokenTypes.VOID);
>
> mmhh..
> that's very curious.
I can't remember if it always adds the prefix for you. It can in some
situation but in general you should do that yourself.
[Actually, from the next upgrade that - adding the prefix - wouldn't
be _neccesary_ anymore.]
> I use this syntax more than once, but it write this uncorrect
output only
> once.
> my grammar file is relatively short, I could send it to whoever is
> interested, if needed....
Please post it to the list and I will have a look. Please include as
much detail as you have.
Incidentally, I can only help with the C# codegen from www.antlr.org
OK?. Pls include the timestamp of the .zip file or when roughly you
downloaded the C# code generator you are using?.
Cheers!,
Micheal
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