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Text in Xtext [message #1770510]

Sun, 13 August 2017 14:49

Ruchika Kumar

Messages: 50
Registered: January 2017

Member

Is there a data type of Text in Xtext? i.e. a string that is without inverted commas and could contain spaces in between words.

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Re: Text in Xtext [message #1770513 is a reply to message #1770510]

Sun, 13 August 2017 16:46

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

short answer: no.

what do you exactly want to achieve

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Text in Xtext [message #1770515 is a reply to message #1770513]

Sun, 13 August 2017 18:07

Ruchika Kumar

Messages: 50
Registered: January 2017

Member

So could we define a terminal rule which acts as a Text and we can specify it for text fields?
I just need to define an attribute of type Text and not String.
i.e. inside the model, I can simply write the value without using " " and also use spaces.

[Updated on: Sun, 13 August 2017 18:10]

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Re: Text in Xtext [message #1770518 is a reply to message #1770515]

Sun, 13 August 2017 18:54

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

It would be more like a datatype rule

E.g.

Stuff: ID+;

But it depends on what you ant to allow inside the string
Where it sorts and where it ends etc

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Text in Xtext [message #1770519 is a reply to message #1770518]

Sun, 13 August 2017 19:29

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

I suspect that you will find that a grammar with non-spacing spaces and without enclosing quotes for spaces is very hard to develop and probably also really painful to use. I strongly suggest a rethink. If it is useable, then perhaps it is so simple that you can handcraft a lexer/parser.

Regards

Ed Willink

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Re: Text in Xtext [message #1770979 is a reply to message #1770519]

Sun, 20 August 2017 12:12

Ruchika Kumar

Messages: 50
Registered: January 2017

Member

Thank you both for your replies.
But ID+ would not allow me to add numbers and special characters in the feature's value. I want simple text which could include anything ranging from numbers, special chars, chars to spaces.

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