[antlr-interest] C# working version

[Terence Parr]

Awesome :)  Heh, can you post a link to your work at antlr.org under 
grammars?

Ter

On Mar 5, 2004, at 3:19 AM, Robin Debreuil wrote:

> Hey all,
>
> I have the latest version of the C# parser up - it now puts the tokens 
> into
> tree form. The AST is modeled fairly closely on the codeDom, other 
> than what
> is missing in there. It is using classes for each node type, except 
> for some
> low level ops/literals etc. I have been altering the C# antlr to use 
> enums
> and make it cls compliant, I hope I've unwound all those changes for 
> this
> version. If you get an error using the C# token classes with antlr 272,
> please let me know : ).
>
> The one thing I haven't been albe to get working is verbatim 
> identifiers (it
> is obscure - the ones where you can say @keyword for an identifier). 
> The
> verbatim strings are working though (the unescaped strings -
> @"abc/def\ghi"). It is one or the other so far... I've tired in both 
> the
> lexer and the parser - the problem is you can have:
>
> string_literal:
> @"string"   // unescaped string
> "hello"        // normal string
>
> identifier:
> @class        // identifier - must be keyword
> ident           // identifier
>
> It seems it should be easy, but the way it lines up all the slots one 
> by one
> keeps biting me.
>
> Other than that, it should parse everything except for unsafe code, 
> and the
> #if preprocessor stuff (next up). It is pretty slow on large large 
> files
> (like 20k lines of the antlr output), but reasonable on less than a few
> thousand lines. The grammar is at:
>
> http://www.debreuil.com/CSharp/CSgrammar.html
>
> and the cs files, and a .Net executable (just drag cs files into 
> CSharp.exe)
> are at:
>
> http://www.debreuil.com/CSharp/CSharp.zip
>
> I haven't been able to break it for a few hours, but I'm sure there are
> still little things in there. Also, the tree is still inserting quite 
> a few
> superfluous nodes, and is a bit strange anyway. Next step I'll move 
> that to
> a (walkable) nested object structure, shouldn't take long...
>
> Well, back to Antlr'ing... Cool tool, gotta be (re)said!
>
> Cheers,
> robin
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
--
Professor Comp. Sci., University of San Francisco
Creator, ANTLR Parser Generator, http://www.antlr.org
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