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antlr error with the workflow file [message #1237269]

Wed, 29 January 2014 09:19

Mehmet Ali Meram

Messages: 5
Registered: July 2010

Junior Member

Hi there,

i have recently installed the following eclipse:

DSL tools Eclipse DSL Tools

Version: Kepler Service Release 1
Build id: 20130919-0819

And i want to use my existing code using the generated code based on Xtext 1.0. But if i want to generate the code with new new Xtext Framework it yields this strange error:

[main] INFO lipse.emf.mwe.utils.StandaloneSetup - Registering platform uri 'H:\Tools\Java_tooling\cdsi_gen'
2765 [main] ERROR eclipse.emf.mwe.core.WorkflowEngine - [ERROR]:

ATTENTION!
The Antlr generator fragment couldn't be found on the classpath.
It is highly recommended to install the feature 'Xtext Antlr SDK' using the external updatesite:

.....

(see http://www.eclipse.org/Xtext/download.html for details).

(Element: -UNKNOWN-; Reported by: -UNKNOWN-)
2765 [main] ERROR eclipse.emf.mwe.core.WorkflowEngine - Workflow interrupted because of configuration errors

The workflow file i use is enclosed in this thread. Do you know how to eliminate this error?

Attachment: GenerateIdl.mwe
(Size: 3.90KB, Downloaded 92 times)

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Re: antlr error with the workflow file [message #1237282 is a reply to message #1237269]

Wed, 29 January 2014 09:44

Uli Merkel

Messages: 248
Registered: June 2013

Senior Member

In your project directory, you will find something like: .antlr-generator-3.2.0.jar

Delete this file and rerun the MWE on your XTEXT file.
Then you will be prompted to reply "y" to download the antlr.

At least this worked for me

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Re: antlr error with the workflow file [message #1237290 is a reply to message #1237282]

Wed, 29 January 2014 10:08

Mehmet Ali Meram

Messages: 5
Registered: July 2010

Junior Member

Thanks, i tried it but it didn't work. And the package de.itemis.xtext.antlr is dependent on this antlr version. If i remove this jar then the manifest cannot find the dependency. Du you have the same eclipse version as i posted?

Regards

[Updated on: Wed, 29 January 2014 10:08]

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Re: antlr error with the workflow file [message #1237305 is a reply to message #1237290]

Wed, 29 January 2014 10:50

Uli Merkel

Messages: 248
Registered: June 2013

Senior Member

I use Kepler, but if you run on XTEXT 1.0, perhaps you have to MIGRATE to xtext2 (see xtext documentation Chapter 13).

Or your XTEXT 1.0 is just looking for an older ANTLR fragment which is not part of the current delivery.
Whats about the site referenced in your "It is highly recommended to install the feature 'Xtext Antlr SDK' using the external updatesite:"

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Re: antlr error with the workflow file [message #1237358 is a reply to message #1237305]

Wed, 29 January 2014 13:53

Mehmet Ali Meram

Messages: 5
Registered: July 2010

Junior Member

I already migrated to Xtext 2.0. But the reason was this fragment in the workflow file:
<fragment class="org.eclipse.xtext.generator.AntlrDelegatingFragment" />

After i replaced it with this line, it worked:

<fragment class="org.eclipse.xtext.generator.parser.antlr.XtextAntlrGeneratorFragment" />

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