[furcas-discussion] [IMP] Incremental Lexer Crashes

Fri Feb 11 15:34:27 CET 2011

The problem that links to elements are nur nulled-out when the element is 
"deleted", as it was the case in MOIN.

Thomas Goldschmidt 

ABB AG
Forschungszentrum
Wallstadter Straße 59
68526 Ladenburg
Office Phone: +49 6203 716134
Office Fax: +49 6203 716253
e-mail: thomas.goldschmidt at de.abb.com

ABB AG
Sitz/Head Office: Mannheim 
Registergericht/Registry Court: Mannheim
Handelsregisternummer/Commercial Register No.: HRB 4664
Geschäftsführung/Managing Board: Peter Smits (Vorsitzender), Joachim 
Schneider, Markus Ochsner, Hans-Georg Krabbe
Vorsitzender des Aufsichtsrats/Chairman of Supervisory Board: Bernhard 
Jucker

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"Uhl, Axel" <axel.uhl at sap.com> 
11.02.2011 15:05 

To
Thomas Goldschmidt/DEABB/ABB at ABB, "furcas-discussion at lists.furcas.org" 
<furcas-discussion at lists.furcas.org> 
cc

Subject
RE: [furcas-discussion] [IMP] Incremental Lexer Crashes

Did I miss something? Which of the horrible EMF element lifecycle aspects 
was at fault and how? 

Cheers, 
-- Axel 

From: furcas-discussion-bounces at lists.furcas.org 
[mailto:furcas-discussion-bounces at lists.furcas.org] On Behalf Of Thomas 
Goldschmidt
Sent: Friday, February 11, 2011 2:40 PM
To: furcas-discussion at lists.furcas.org
Subject: Re: [furcas-discussion] [IMP] Incremental Lexer Crashes 

Thanks a lot! Sorry, that I had no time to do this myself. 

One more things about the horrible model element lifecycle in EMF :( 

Thomas Goldschmidt 

ABB AG
Forschungszentrum
Wallstadter Straße 59
68526 Ladenburg
Office Phone: +49 6203 716134
Office Fax: +49 6203 716253
e-mail: thomas.goldschmidt at de.abb.com

ABB AG
Sitz/Head Office: Mannheim 
Registergericht/Registry Court: Mannheim
Handelsregisternummer/Commercial Register No.: HRB 4664
Geschäftsführung/Managing Board: Peter Smits (Vorsitzender), Joachim 
Schneider, Markus Ochsner, Hans-Georg Krabbe
Vorsitzender des Aufsichtsrats/Chairman of Supervisory Board: Bernhard 
Jucker

Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte 
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Stephan Erb <stephan at dev.static-void.de> 
Sent by: furcas-discussion-bounces at lists.furcas.org 
11.02.2011 14:37 

To
furcas-discussion at lists.furcas.org 
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Subject
Re: [furcas-discussion] [IMP] Incremental Lexer Crashes

For the record: It's fixed in 
https://github.com/FURCAS-dev/FURCAS/commit/397d33c6ccc9b020041ed68fab741380cdd61a78

On Sat, 2011-02-05 at 15:58 +0100, Stephan Erb wrote:
> Hey Thomas,
> 
> the IMP branch contains the first partially working IMP editor (see
> [1]). Unfortunately the incremental lexer is crashing regularly and I am
> unable to find the cause.
> 
> The lexer dies with: 
> 
> java.lang.ArrayIndexOutOfBoundsException
>                  at java.lang.System.arraycopy(Native Method)
>                  at 
org.eclipse.emf.common.util.BasicEList.addUnique(BasicEList.java:446)
>                  at 
org.eclipse.emf.common.notify.impl.NotifyingListImpl.doAddUnique(NotifyingListImpl.java:393)
>                  at 
org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:377)
>                  at 
org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:345)
>                  at 
com.sap.ide.cts.parser.incremental.IncrementalLexer.addTokenIfNecessaryAndUpdateOffetsAndLengths(IncrementalLexer.java:675)
>                  at 
com.sap.ide.cts.parser.incremental.IncrementalLexer.lexPhase(IncrementalLexer.java:528)
>                  at 
com.sap.ide.cts.parser.incremental.IncrementalLexer.lex(IncrementalLexer.java:160)
>                  at 
com.sap.ide.cts.parser.incremental.antlr.ANTLRIncrementalLexerAdapter.lex(ANTLRIncrementalLexerAdapter.java:301)
>                  at 
com.sap.furcas.ide.editor.imp.services.FurcasParseController.parse(FurcasParseController.java:138)
>                  at 
com.sap.furcas.ide.editor.commands.ParseCommand.execute(ParseCommand.java:30)
> 
> At lines 518 and 519 within the IncrementalLexer we seem to have
> inconsistently versioned TextBlocks: We have a token and its parent
> block within the previous version. Now we map both to the current
> version. However, during this process, the parent child relation seems
> to get lost. The block does no longer contain the token. 
> 
> Given your experience with all this TextBlocks versioning, any idea
> where I should start digging? 
> 
> Thanks!
> Stephan
> 
> PS: If you want to try it yourself you have to install IMP from
> http://download.eclipse.org/technology/imp/updates/
> 
> 
> [1]
> 
https://github.com/FURCAS-dev/FURCAS/blob/imp/DSLEngineering/com.sap.furcas.ide.editor/src/com/sap/furcas/ide/editor/imp/
> 
> _______________________________________________
> Furcas-discussion mailing list
> Furcas-discussion at lists.furcas.org
> http://lists.furcas.org/cgi-bin/mailman/listinfo/furcas-discussion

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