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xtext terminal rule [message #1734196]

Mon, 06 June 2016 06:42

Sachin Samaram

Messages: 271
Registered: April 2016

Senior Member

Hi,

I want to write an xtext terminal rule for '&' which should have prefix and suffix.

Example: a&b

How to write terminal rule for it?

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Re: xtext terminal rule [message #1734230 is a reply to message #1734196]

Mon, 06 June 2016 12:48

Thomas Fritsch

Messages: 28
Registered: April 2013
Location: Germany

Junior Member

Did you read the Xtext Grammar documentation http://help.eclipse.org/mars/topic/org.eclipse.xtext.doc/contents/301_grammarlanguage.html?cp=85_2_0 already?

terminal XYZ:
  ('a'..'z'|'A'..'Z')+ '&' ('a'..'z'|'A'..'Z')+;

(assuming prefix and suffix can be any sequence of 1 or more letters)

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Re: xtext terminal rule [message #1734256 is a reply to message #1734230]

Mon, 06 June 2016 15:04

Sachin Samaram

Messages: 271
Registered: April 2016

Senior Member

Hi,

I already tried it but it is failing if I use like

a=b&c or a=b &c or a = b & c

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Re: xtext terminal rule [message #1734257 is a reply to message #1734256]

Mon, 06 June 2016 15:15

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

you dont allow spaces in your grammar? it it linebased? then you should consider rewriting the WS rule

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

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Re: xtext terminal rule [message #1734259 is a reply to message #1734257]

Mon, 06 June 2016 15:27

Sachin Samaram

Messages: 271
Registered: April 2016

Senior Member

Hi,

It is working.

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