Unhandled selector definition

[depsypher]

The following (sucky) selector definition causes an uncaught exception that makes the editor fail to render at all:

.wrapper header form {
height: 1.7em;
}

eclipse.buildId=M20110909-1335
java.version=1.6.0_29
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments: -product org.eclipse.epp.package.jee.product -keyring /Users/rvanderborght/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.jee.product -keyring /Users/rvanderborght/.eclipse_keyring -showlocation

Error
Fri Jan 27 13:42:26 PST 2012
An internal error occurred during: "XtextReconcilerJob".

org.eclipse.xtext.parser.ParseException: org.eclipse.xtext.conversion.ValueConverterException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.doParse(AbstractAntlrParser.java:105)
at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.parse(AbstractAntlrParser.java:84)
at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.doParse(AbstractAntlrParser.java:62)
at org.eclipse.xtext.parser.AbstractParser.parse(AbstractParser.java:27)
at org.eclipse.xtext.resource.XtextResource.doLoad(XtextResource.java:156)
at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doLoad(LazyLinkingResource.java:70)
at org.eclipse.xtext.resource.XtextResource.reparse(XtextResource.java:180)
at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:186)
at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:90)
at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:33)
at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:239)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.emf.common.util.WrappedException: org.eclipse.xtext.conversion.ValueConverterException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
at org.eclipse.xtext.parser.antlr.AbstractInternalAntlrParser.parse(AbstractInternalAntlrParser.java:551)
at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.doParse(AbstractAntlrParser.java:102)
... 11 more
Caused by: org.eclipse.xtext.conversion.ValueConverterException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
at org.eclipse.xtext.parser.DefaultEcoreElementFactory.set(DefaultEcoreElementFactory.java:80)
at org.eclipse.xtext.parser.antlr.AbstractInternalAntlrParser.forceCreateModelElementAndSet(AbstractInternalAntlrParser.java:637)
at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleCombinatorExpression(InternalLessParser.java:5657)
at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleSelector(InternalLessParser.java:5468)
at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleExtendedRuleSet(InternalLessParser.java:995)
at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleStatement(InternalLessParser.java:422)
at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleLessFile(InternalLessParser.java:243)
at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.entryRuleLessFile(InternalLessParser.java:185)
at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.xtext.parser.antlr.AbstractInternalAntlrParser.parse(AbstractInternalAntlrParser.java:528)
... 12 more
Caused by: java.lang.ClassCastException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
at nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl.eSet(DescendantCombinatorImpl.java:266)
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjectImpl.java:1081)
at org.eclipse.xtext.parser.DefaultEcoreElementFactory.set(DefaultEcoreElementFactory.java:69)
... 23 more

[dslmeinte]

Hi Ray,

I've reproduced this one, but I'm also changing the structure and
purpose of the DSL(s) currently and I don't have much time to look
into LessCss the coming time. It's not something I can fix off-hand,
because there's something wrong with the way the text is parsed.

On Fri, Jan 27, 2012 at 10:49 PM, Ray Vanderborght
reply@reply.github.com
wrote:

The following (sucky) selector definition causes an uncaught exception that makes the editor fail to render at all:

.wrapper header form {
       height: 1.7em;
}

eclipse.buildId=M20110909-1335
java.version=1.6.0_29
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.jee.product -keyring /Users/rvanderborght/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.jee.product -keyring /Users/rvanderborght/.eclipse_keyring -showlocation

Error
Fri Jan 27 13:42:26 PST 2012
An internal error occurred during: "XtextReconcilerJob".

org.eclipse.xtext.parser.ParseException: org.eclipse.xtext.conversion.ValueConverterException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
       at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.doParse(AbstractAntlrParser.java:105)
       at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.parse(AbstractAntlrParser.java:84)
       at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.doParse(AbstractAntlrParser.java:62)
       at org.eclipse.xtext.parser.AbstractParser.parse(AbstractParser.java:27)
       at org.eclipse.xtext.resource.XtextResource.doLoad(XtextResource.java:156)
       at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doLoad(LazyLinkingResource.java:70)
       at org.eclipse.xtext.resource.XtextResource.reparse(XtextResource.java:180)
       at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:186)
       at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:90)
       at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:33)
       at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:239)
       at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.emf.common.util.WrappedException: org.eclipse.xtext.conversion.ValueConverterException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
       at org.eclipse.xtext.parser.antlr.AbstractInternalAntlrParser.parse(AbstractInternalAntlrParser.java:551)
       at org.eclipse.xtext.parser.antlr.AbstractAntlrParser.doParse(AbstractAntlrParser.java:102)
       ... 11 more
Caused by: org.eclipse.xtext.conversion.ValueConverterException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
       at org.eclipse.xtext.parser.DefaultEcoreElementFactory.set(DefaultEcoreElementFactory.java:80)
       at org.eclipse.xtext.parser.antlr.AbstractInternalAntlrParser.forceCreateModelElementAndSet(AbstractInternalAntlrParser.java:637)
       at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleCombinatorExpression(InternalLessParser.java:5657)
       at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleSelector(InternalLessParser.java:5468)
       at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleExtendedRuleSet(InternalLessParser.java:995)
       at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleStatement(InternalLessParser.java:422)
       at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.ruleLessFile(InternalLessParser.java:243)
       at nl.dslmeinte.xtext.less.parser.antlr.internal.InternalLessParser.entryRuleLessFile(InternalLessParser.java:185)
       at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.eclipse.xtext.parser.antlr.AbstractInternalAntlrParser.parse(AbstractInternalAntlrParser.java:528)
       ... 12 more
Caused by: java.lang.ClassCastException: nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl cannot be cast to nl.dslmeinte.xtext.css.css.SimpleSelectorSequence
       at nl.dslmeinte.xtext.css.css.impl.DescendantCombinatorImpl.eSet(DescendantCombinatorImpl.java:266)
       at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjectImpl.java:1081)
       at org.eclipse.xtext.parser.DefaultEcoreElementFactory.set(DefaultEcoreElementFactory.java:69)
       ... 23 more

With kind regards,

Meinte Boersma (drs./M.Sc.)

Independent consultant and expert in
domain modeling and model-driven software development (MDSD).
Web site: http://www.dslconsultancy.com/
Blog: http://dslmeinte.wordpress.com/
Twitter: http://twitter.com/meinte37