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can't use any word same than a keyword in my custom Enum rule [message #896932]

Fri, 20 July 2012 09:25

Eclipse User

Hi,

I've create a enum rule this way:

Enum:
	'enum' name = ValidID
	'{'
	  (literals+=EnumLiteral ((',')? literals+=EnumLiteral)*)?
	'}'
;

EnumLiteral:
    name=ValidID 
    ('as' literal=STRING)? 
    ('=' value=INT)?
;

But unfortunately, I can't use any word that is a keyword inside this enum.

Is there any way I can handle this ?

thanks,

Cristiano

Re: can't use any word same than a keyword in my custom Enum rule [message #896942 is a reply to message #896932]

Fri, 20 July 2012 09:40

Eclipse User

Hi

what about escaping the keyword (uisng tilde) e.g.

enum ~enum {~as as "as"}

Alternatively change your grammar to use

ValidIDPlus: ValidID | "enum" | "as";

~Christian

Re: can't use any word same than a keyword in my custom Enum rule [message #896955 is a reply to message #896942]

Fri, 20 July 2012 10:10

Eclipse User

Hi Christian,

well, I think I will go for the first option... but I need inform the user.

Could you tell me how could I get a list of all keywords inside a validation method... this I could compare what the user puts in the enum and warning him that he must escape that error word.

thanks

Cristiano

Re: can't use any word same than a keyword in my custom Enum rule [message #896956 is a reply to message #896955]

Fri, 20 July 2012 10:18

Eclipse User

Hi,

what about combining
org.eclipse.xtext.GrammarUtil.getAllKeywords(Grammar)
and
org.eclipse.xtext.IGrammarAccess.getGrammar()

inject the second and call the first from whereever you want

Re: can't use any word same than a keyword in my custom Enum rule [message #896957 is a reply to message #896956]

Fri, 20 July 2012 10:19

Eclipse User

P.S: http://blog.dietmar-stoll.de/2012/07/custom-syntax-error-messages-with-quick.html might give a solution to your problem

Re: can't use any word same than a keyword in my custom Enum rule [message #896990 is a reply to message #896957]

Fri, 20 July 2012 13:05

Eclipse User

Cool !

That is what I looking for !! Very Happy

Thanks again Christian !

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