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'Cannot find type' error [message #692418]

Mon, 04 July 2011 11:59

john doe

Messages: 74
Registered: June 2011

Member

Hi

I have an error in my grammar and I'm not sure why I'm getting this.
The error is

Cannot find type for 'INT | DOUBLE'

My grammar looks like this:

Condition :
	property=[PropertyDefinition] operator=ComparisonOperation value=(INT | DOUBLE)
;

terminal DOUBLE :
	INT '.' (INT)+
;

The error is thrown within my 'Condition' grammar rule.
Why am I getting this error?
Thanks

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Re: 'Cannot find type' error [message #692425 is a reply to message #692418]

Mon, 04 July 2011 12:18

Christian Dietrich

Messages: 13614
Registered: July 2009

Senior Member

Hi,

DOUBLE is an acore::EString
INT an ecore::EInt

this does not fit together. which type should value be of?

~Christian

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Re: 'Cannot find type' error [message #692429 is a reply to message #692425]

Mon, 04 July 2011 12:26

john doe

Messages: 74
Registered: June 2011

Member

Should I thus create a rule that wraps the two types like so?

Condition :
	property=[PropertyDefinition] operator=ComparisonOperation value=ConditionValue
;

ConditionValue :
	DOUBLE | INT
;

terminal DOUBLE :
	INT '.' (INT)+
;

Regards

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Re: 'Cannot find type' error [message #692430 is a reply to message #692429]

Mon, 04 July 2011 12:28

Christian Dietrich

Messages: 13614
Registered: July 2009

Senior Member

if you can live with ConditionValue being probably a estring. btw doesn't you double rule hide the int rule and should
be replaced with a datatype rule too?

~Christian

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

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