Bug 352452

Description Marc Mising name 2011-07-19 09:07:39 EDT

Build Identifier: 20110615-0604

[The project has been created with eclipse 3.6 and then the workspace reused from eclipse 3.7]

When editing templates, I get some error popups «randomly» with the following unhelpful text:

'Acceleo' has encountered a problem.
An internal error occured during: "Acceleo"

When I click on "Details", I have:

An internal error occurred during: "Acceleo".
  java.lang.NullPointerException

An when I try to get more info in the Error Log, I have:
java.lang.NullPointerException
	at org.eclipse.acceleo.internal.parser.ast.ocl.environment.AcceleoTypeResolver.classifierEqual(AcceleoTypeResolver.java:228)
	at org.eclipse.acceleo.internal.parser.ast.ocl.environment.AcceleoTypeResolver.findShadowClass(AcceleoTypeResolver.java:205)
	at org.eclipse.acceleo.internal.parser.ast.ocl.environment.AcceleoTypeResolver.findShadowClass(AcceleoTypeResolver.java:1)
	at org.eclipse.ocl.AbstractTypeResolver.getShadowClass(AbstractTypeResolver.java:950)
	at org.eclipse.ocl.AbstractTypeResolver.resolveAdditionalOperation(AbstractTypeResolver.java:737)
	at org.eclipse.ocl.AbstractEnvironment.addOperation(AbstractEnvironment.java:478)
	at org.eclipse.ocl.AbstractEnvironment.addHelperOperation(AbstractEnvironment.java:456)
	at org.eclipse.ocl.ecore.EcoreEnvironment.defineOperation(EcoreEnvironment.java:582)
	at org.eclipse.acceleo.internal.parser.ast.ocl.OCLParser.addTemplateToScope(OCLParser.java:497)
	at org.eclipse.acceleo.internal.parser.ast.ocl.OCLParser.addBehavioralFeaturesToScope(OCLParser.java:443)
	at org.eclipse.acceleo.internal.parser.ast.ocl.OCLParser.addRecursivelyBehavioralFeaturesToScope(OCLParser.java:347)
	at org.eclipse.acceleo.internal.parser.ast.ocl.OCLParser.addRecursivelyBehavioralFeaturesToScope(OCLParser.java:323)
	at org.eclipse.acceleo.internal.parser.ast.CST2ASTConverterWithResolver.transformStepResolve(CST2ASTConverterWithResolver.java:185)
	at org.eclipse.acceleo.internal.parser.ast.CST2ASTConverterWithResolver.resolveAST(CST2ASTConverterWithResolver.java:125)
	at org.eclipse.acceleo.internal.parser.ast.CST2ASTConverterWithResolver.resolveAST(CST2ASTConverterWithResolver.java:104)
	at org.eclipse.acceleo.parser.AcceleoSourceBuffer.resolveAST(AcceleoSourceBuffer.java:336)
	at org.eclipse.acceleo.internal.ide.ui.editors.template.AcceleoSourceContent$AcceleoSourceBufferWithASTJob.runCreateAST(AcceleoSourceContent.java:291)
	at org.eclipse.acceleo.internal.ide.ui.editors.template.AcceleoSourceContent$AcceleoSourceBufferWithASTJob$1.run(AcceleoSourceContent.java:249)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Sometimes, this happens when simply typing text (see above) but also when invoking the autocompletion. In this case, the error log shows no stack trace with the message "Content Assist" did not complete normally.  Please see the log for more information."

This renders the use of the IDE nearly useless.


Reproducible: Always

Steps to Reproduce:
1. open existing template
2. make some changes in the template