[antlr-interest] Seperating Grammar and Actions..
Ruslan Zasukhin
sunshine at public.kherson.ua
Mon Jan 13 06:21:19 PST 2003
on 1/13/03 4:08 PM, Anakreon Mejdi at amejdi at ertonline.gr wrote:
> There is annotation-20020416.zip in the files section at yahoo.
> Here is an example:
>
> class CalcTreeWalker extends TreeParser;
>
> expr <init>
> : #(PLUS <p1>expr <p2>expr) <p3>
> | #(STAR <s1>expr <s2>expr) <s3>
> | <i1>INT <i2>
> ;
>
> in a separate file (say file.act) you can define:
> @init: code in the desired language
> @p3: some other code
> call java annotation.Insert -s your_grama_file -i file.act -d output.g
>
> output.g is parsable by antlr and has antlr code with tags replaced by
> the code defined in @init, @p3 ,...
>
> For more information see the readme.txt file included in the archive.
But if names as <init> must be unique in the global scope ?
I.e. Can I in the next rule use it again ?
(it seems I cannot)
And I wonder, if exists info about this feature on ANTLR site or archive?
How on earth new visitor can find this info ?!
--
Best regards,
Ruslan Zasukhin [ I feel the need...the need for speed ]
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