Hi,

has somebody tried to create an ANTLR grammar for D or is working on it?

I found a few articles about that in the archives but no working links to grammars and the attachments are not stored by the web interface of the newsgroup.


Another interesting thing would be an ANTLR extension to create lexers/parsers in D. Somebody working on that?


Michael

In article <MPG.1d1154989a91cd6698968b@news.digitalmars.com>, Michael Butscher says...
>
>Hi,
>
>has somebody tried to create an ANTLR grammar for D or is working on it?
>
>I found a few articles about that in the archives but no working links to grammars and the attachments are not stored by the web interface of the newsgroup.

You might try this: http://aegisknight.org/~andy/d/d.g

There's some more grammar odds-and-ends here that may be of some use: http://www.prowiki.org/wiki4d/wiki.cgi?GrammarParsers

jcc7

Michael Butscher <mbutscher@gmx.de> wrote in news:MPG.1d1154989a91cd6698968b@news.digitalmars.com:

> 
> Another interesting thing would be an ANTLR extension to create lexers/parsers in D. Somebody working on that?
> 

I've currently modified lapg (see http://lapg.sf.net) to produce D output.
lapg supports lexical scanner generation and LALR(1) grammars.
I've also tried to create a D grammar for lapg but there are some
D constructs which are context sensitive and needs >1 lookahead.
The semantic and syntactic predicates of ANTLR would be very handy for
this. I had a look at the ANTLR source and mailing list but
I have not found a starting point or document how to create a custom
language output generator, yet. If you have more luck, let me know :-)
Greets


Klaus


BTW creating a custom language binding for ANTLR seems to be a nontrivial task. For lapg more or less changing a text template and recompilation was needed. Langage support in ANTLR consists of two parts: a code generator and a support library (base classes and AST handling). The one(s) who create such a monster will probably be condemned to maintain it :-)

J C Calvarese wrote:

> You might try this: http://aegisknight.org/~andy/d/d.g
> 
> There's some more grammar odds-and-ends here that may be of some use: http://www.prowiki.org/wiki4d/wiki.cgi?GrammarParsers
> 
> jcc7
> 

Thank you, exactly what I searched for. Is anybody actively working on this yet?


Michael

Klaus Oberhofer wrote:


> The semantic and syntactic predicates of ANTLR would be very handy for
> this. I had a look at the ANTLR source and mailing list but
> I have not found a starting point or document how to create a custom
> language output generator, yet. If you have more luck, let me know :-)

Because nobody seems to work currently on such a generator, I will try to create one, but I don't know how far I will come.


> Greets
> 
> 
> Klaus
> 
> 
> BTW creating a custom language binding for ANTLR seems to be a nontrivial task. For lapg more or less changing a text template and recompilation was needed. Langage support in ANTLR consists of two parts: a code generator and a support library (base classes and AST handling). The one(s) who create such a monster will probably be condemned to maintain it :-)

One nice thing with open source software is that nobody needs to be responsible forever for his/her software.

At first glance the rewrite of the support library should be possible with reasonable effort because of the similarity of Java and D.


Michael