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Using Xtext 2.3.1 Included Parser [message #1033076]

Wed, 03 April 2013 16:44

Eclipse User

I'm trying to use the included parser instead of ANTLR. I saw this message:

As an alternative to ANTLR you could also use the alternative implementation shipped with Xtext.
To do so use the generator fragment '...packrat.PackratParserFragment' in your mwe2 file instead.(Element: -UNKNOWN-; Reported by: -UNKNOWN-)
[ERROR]:

But I don't know what/where to modify in the MWE2 workflow file. I see two "fragment=" fragments that are ANTLR, but pasting in org.eclipse.xtext.generator.parser.packrat.PackratParserFragment instead of the ANTLR string doesn't change the error.

Does anyone have any suggestions for how to use the included (packrat?) parser with the Eclipse/Xtext download (the pre-configured-with-xtext-download, not downloading Xtext using Update Sites) instead of downloading ANTLR?

Thx

Re: Using Xtext 2.3.1 Included Parser [message #1036159 is a reply to message #1033076]

Sun, 07 April 2013 22:37

Eclipse User

No one knows how to configure the included, non-ANTLR parser?

Re: Using Xtext 2.3.1 Included Parser [message #1036307 is a reply to message #1036159]

Mon, 08 April 2013 04:02

Eclipse User

I don't think the Packrat parser is still being maintained.
See http://blog.efftinge.de/2009/01/xtext-new-parser-backend.html, especially the comment section.
I also tried adding the fragment (halfheartedly, I admit) instead of the ANTLR parser generator, and that didn't work.

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