Eclipse Community Forums: TMF (Xtext) » Defining long in xtext and expecting rule

Help

Home

Home » Modeling » TMF (Xtext) » Defining long in xtext and expecting rule_long error

Show: Today's Messages :: Show Polls :: Message Navigator

Defining long in xtext and expecting rule_long error [message #1835100]

Tue, 24 November 2020 18:49

Nils K.

Messages: 13
Registered: November 2020

Junior Member

Hello,

I have an issue assigning long values and generating code from it.

I defined the long type with

terminal LONG returns ecore::ELong: ('0'..'9')+;

so I would assume any figure fitting 64bit is valid. Unfortunately, I constantly receive an error.

ERROR:Unexpected '1232323232444443', expecting rule_long.

I cannot find anything about "expecting rule_long". What does that mean?

Report message to a moderator

Re: Defining long in xtext and expecting rule_long error [message #1835103 is a reply to message #1835100]

Tue, 24 November 2020 19:14

Christian Dietrich

Messages: 14496
Registered: July 2009

Senior Member

please (as already said in other thread)
provide a complete grammar and unit test

the error message says: 1232323232444443 is not parsed as long in your grammar.
i dont know what other rules you have that can be conflicting

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

Report message to a moderator

Re: Defining long in xtext and expecting rule_long error [message #1835104 is a reply to message #1835100]

Tue, 24 November 2020 19:18

Ed Willink

Messages: 7595
Registered: July 2009

Senior Member

Hi

'rule_long' may be an auto-generated name that ensures that names do not clash with Java. A rule clled 'long' would be really bad.

1232323232444443 should not be a problem.

I suspect your problem is something completely different that you have not shared with us.

Regards

Ed Willink

Report message to a moderator

Re: Defining long in xtext and expecting rule_long error [message #1835108 is a reply to message #1835103]

Tue, 24 November 2020 19:36

Nils K.

Messages: 13
Registered: November 2020

Junior Member

Thanks for trying to help.

Actually, there are no other rules, or, I don't recognize them as rules.

The only additional lines are:

LongFigure:
LongValue=LONG
;

and within my generator file it is used in this way. Nevertheless it seems that function gets never called and xtext is not able to assign those long values like 1243434343434 (more than 9 figures) to my long rules/values. Is that a xtext limitation maybe? What's wrong with my terminal line defining the long figures ?

def propertyLongValue(LongFigure value){
return [...]
}

Report message to a moderator

Re: Defining long in xtext and expecting rule_long error [message #1835109 is a reply to message #1835104]

Tue, 24 November 2020 19:41

Nils K.

Messages: 13
Registered: November 2020

Junior Member

One thing I noticed about your comment was that "long" may be a bad name and I tried to play around with it. Even that did not fix it and I renamed it back to long, I noticed a new error :

"The rule LONG does not override a rule from a super grammar."

Am I required to import something to use long values maybe?

Report message to a moderator