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How do I create Java & Python parsers for the same Xtext DSL [message #946993]

Tue, 16 October 2012 18:08

Bruce Dunn

Messages: 1
Registered: October 2012

Junior Member

I'm looking at using Xtext to define a DSL for a language who's input files are dynamically loaded at runtime by both a Java application and a Python application. That is, I need Xtext to generate both Java and Python lexers/parsers for my language so I can embed them in my two applications.

I've been poking around the .mwe2 workflow file and it appears that it has the ability to support multiple language elements within the Generator component, but I can't figure out how to do it. Am I on the right path or am I off in the weeds?

Any help would be appreciated.

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Re: How do I create Java & Python parsers for the same Xtext DSL [message #947057 is a reply to message #946993]

Tue, 16 October 2012 19:25

Sebastian Zarnekow

Messages: 3109
Registered: July 2009

Senior Member

Hi Bruce,

you'll have to implement an IGeneratorFragment that produces the lexer
for the Python app.

You probably want to extend
org.eclipse.xtext.generator.AbstractGeneratorFragment or
org.eclipse.xtext.generator.Xtend2GeneratorFragment

Hope that helps,
Sebastian
--
Looking for professional support for Xtext, Xtend or Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 16.10.12 21:09, schrieb Bruce Dunn:
> I'm looking at using Xtext to define a DSL for a language who's input
> files are dynamically loaded at runtime by both a Java application and a
> Python application. That is, I need Xtext to generate both Java and
> Python lexers/parsers for my language so I can embed them in my two
> applications.
>
> I've been poking around the .mwe2 workflow file and it appears that it
> has the ability to support multiple language elements within the
> Generator component, but I can't figure out how to do it. Am I on the
> right path or am I off in the weeds?
>
> Any help would be appreciated.
>

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