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Sat, 13 October 2012 05:53

Eclipse User

Greetings,

I'm trying to define an NMToken Terminal for an Xtext 2.3 DSL.

I guess the correct definition is something like this:

terminal NMTOKEN:
('a'..'z' | 'A'..'Z' | '_' | '0'..'9' | '.' | '-' | ':')+;

However that rule has a problem when generating Xtext artifacts:
"The following token definitions can never be matched because prior tokens match the same input: RULE_INT"

And i guess it's true as an NMTOKEN may be an INT as well.

Is there a way to properly define an NMTOKEN terminal or any other way i can incorporate it into my DSL?

Thank you.

Re: NMToken Terminal [message #942255 is a reply to message #942245]

Sat, 13 October 2012 06:03

Eclipse User

Hi use a dataype rule instead

--
Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext at itemis dot de

Re: NMToken Terminal [message #942562 is a reply to message #942255]

Sat, 13 October 2012 12:39

Eclipse User

Thanks for the quick response.

I guess you mean i write something like this:

(i didn't write all letters just to test)

NMToken:
('a' | 'b' | 'c' | 'd' | 'e' | 'z' | 'A' | 'B' | 'C' | 'D' | 'E' | 'Z' | '_' | '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' | '.' | '-' | ':')+;

I tried this after you mentioned it and it creates problem. It affects the RULE_INT and i get errors when i write my files.

Any ideas?

Re: NMToken Terminal [message #942569 is a reply to message #942562]

Sat, 13 October 2012 12:51

Eclipse User

I mean

NMToken: (ID | INT | '.' | '-' | ':')+

Re: NMToken Terminal [message #942653 is a reply to message #942569]

Sat, 13 October 2012 14:59

Eclipse User

Thank you very much, that worked perfectly!

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