[antlr-interest] Rewriting java source code

[Nicola Musatti]

Hallo, Morten.
This sounds like a perfect job for a TokenRewriteStream. You should add 
actions to your grammar that retrieve the start-end token pairs of the 
portions you need to rewrite and use those in conjunction with 
TokenRewriteStream's insert/replace/delete methods to perform your 
modifications, possibly by means of small StringTemplate templates.

See:
http://www.antlr.org/api/Java/classorg_1_1antlr_1_1runtime_1_1_token_rewrite_stream.html

Cheers,
Nicola Musatti

Morten Olav Hansen wrote:
> Hi
>
> I'm currently trying to rewrite some java source code, and was looking
> for some pointers for doing this. I have added the Java.g (1.5)
> grammar and is currently using the grammar for parsing java files,
> with no problems.
>
> What I'm wondering is, how to proceed from this? I have used
> StringTemplates before, but it seems to be a lot of work when I'm only
> interested in rewriting small parts of the grammar, since I would have
> to add rewrite rules for the entire java language, and I couldn't find
> any pre-made files for this.
>
> Could something like this be accomplished using a tree walker?
>
> Any ideas or examples would be appreciated, thanks.
>
>
> Regards,
> Morten
>
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