Eclipse Community Forums: TMF (Xtext)

Home » Modeling » TMF (Xtext) » keywords in grammar

Thu, 14 May 2015 11:52

Eclipse User

I have a grammar that has exponent values do I have to define a rule for exponents as below:
exponent returns Exponent:
Integer 'E' ('+'?|'-') Integer;

Variable returns VarDef:
'Var' name=ID;

The problem is when I am trying to define a variable in my language with a name E or e it gives an error and says that RULE_ID is expected.

any suggestions on how to define 'E' in the grammar and can be used at the same time as an ID

Re: keywords in grammar [message #1695441 is a reply to message #1695433]

Thu, 14 May 2015 12:21

Eclipse User

hi you have to use datatype rules for that:

MyID: ID | 'E';

Variable returns VarDef:
'Var' name=MyID;

Re: keywords in grammar [message #1695442 is a reply to message #1695441]

Thu, 14 May 2015 12:22

Eclipse User

Thanks Alot Smile

Previous Topic:	How to handle left-recursive Call graphs in xtext?
Next Topic:	XText 2.4.3 to 2.8.2 performance problems in getDeclaredMethods and isReadOnly

Goto Forum:

-=] Back to Top [=-

Current Time: Mon Sep 22 03:13:12 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter