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StackOverFlowError [message #707059]

Mon, 01 August 2011 07:37

Arun

Messages: 26
Registered: July 2011

Junior Member

Hi,

A huge StackOverFlowError is shown for my grammar. What could be the reason?

51295 [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher -
java.lang.StackOverflowError
at org.eclipse.xtext.parsetree.NodeContentAdapter.updateCompositeNode(NodeContentAdapter.java:121)
at org.eclipse.xtext.parsetree.NodeContentAdapter.updateCompositeNode(NodeContentAdapter.java:132)
at org.eclipse.xtext.parsetree.NodeContentAdapter.updateCompositeNode(NodeContentAdapter.java:132)
at org.eclipse.xtext.parsetree.NodeContentAdapter.updateCompositeNode(NodeContentAdapter.java:132)
at org.eclipse.xtext.parsetree.NodeContentAdapter.updateCompositeNode(NodeContentAdapter.java:132)
at org.eclipse.xtext.parsetree.NodeContentAdapter.updateCompositeNode(NodeContentAdapter.java:132)
...
...
...

Thanks,
Arun

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Re: StackOverFlowError [message #707067 is a reply to message #707059]

Mon, 01 August 2011 07:48

Arun

Messages: 26
Registered: July 2011

Junior Member

Adding to that,

The error occurs for unordered group,

CProperty1:
"property" name=ID "{"
(
("mappedTo" mappedTo=STRING)?
("type" mappedType=MappedType)?
("repository" repository=STRING)?
&("queryable" queryableOP=TrueFalseOption)?
&("readable" readableOP=TrueFalseOption)?
&("writable" writableOP=TrueFalseOption)?
&("required" requiredOP=FalseTrueOption)?
&("hidden" hiddenOP=FalseTrueOption)?
&("expert" expertOP=FalseTrueOption)?
&("cascade" cascade=CascadeType)?
&("cache-mode" cachMode=CacheType)?
&("group" group=ID)?
&("description" description=STRING)?
&("description-resource" descriptionResource=STRING)?
&("displayname" displayName=STRING)?
&("displayname-resource" displayNameResource=STRING)?
&("category" category=STRING)?
&("category-resource" categoryResource=STRING)?

)?
"}"
;

If i remove the '&' no error is reported. But my requirement is unordered group.

Thanks,
Arun

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Re: StackOverFlowError [message #707083 is a reply to message #707067]

Mon, 01 August 2011 08:00

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Arun,

did you consider to upgrade to Xtext 2.0? There were fixes in this field.

Another thing that seems suspicious to me is the first part of your
unordered group:

("mappedTo" mappedTo=STRING)?
("type" mappedType=MappedType)?
("repository" repository=STRING)? &("queryable"
queryableOP=TrueFalseOption)?
&("readable" readableOP=TrueFalseOption)? ..

is essentially the same as

(
("mappedTo" mappedTo=STRING)?
("type" mappedType=MappedType)?
("repository" repository=STRING)?
)

&("queryable" queryableOP=TrueFalseOption)?
&("readable" readableOP=TrueFalseOption)? ..

I'm not sure about your syntax but I guess it should more look like this:

("mappedTo" mappedTo=STRING)?
("type" mappedType=MappedType)?
(
("repository" repository=STRING)?
&("queryable" queryableOP=TrueFalseOption)?
&("readable" readableOP=TrueFalseOption)? ..
)

Hope that helps,
Sebastian
--
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Go visit: http://xtext.itemis.com

On 01.08.11 09:48, Arun wrote:
> Adding to that,
>
> The error occurs for unordered group,
>
> CProperty1:
> "property" name=ID "{"
> (
> ("mappedTo" mappedTo=STRING)?
> ("type" mappedType=MappedType)?
> ("repository" repository=STRING)? &("queryable"
> queryableOP=TrueFalseOption)?
> &("readable" readableOP=TrueFalseOption)?
> &("writable" writableOP=TrueFalseOption)?
> &("required" requiredOP=FalseTrueOption)?
> &("hidden" hiddenOP=FalseTrueOption)? &("expert" expertOP=FalseTrueOption)?
> &("cascade" cascade=CascadeType)?
> &("cache-mode" cachMode=CacheType)?
> &("group" group=ID)?
> &("description" description=STRING)?
> &("description-resource" descriptionResource=STRING)?
> &("displayname" displayName=STRING)?
> &("displayname-resource" displayNameResource=STRING)?
> &("category" category=STRING)?
> &("category-resource" categoryResource=STRING)?
>
> )? "}"
> ;
>
> If i remove the '&' no error is reported. But my requirement is
> unordered group.
> Thanks,
> Arun

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