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arbitrary returns [message #772745]

Fri, 30 December 2011 13:34

Mauro Condarelli

Messages: 428
Registered: September 2009

Senior Member

Hi,
is there a way to associate arbitrary values to productions?

something like:

Num returns ecore::EInt: [num=0]"zero" | [num=1]"one" | [num=2]"two";

Regards
Mauro

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Re: arbitrary returns [message #772750 is a reply to message #772745]

Fri, 30 December 2011 13:40

Christian Dietrich

Messages: 14669
Registered: July 2009

Senior Member

Hi this is done with an ValueConverter

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

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Re: arbitrary returns [message #772755 is a reply to message #772750]

Fri, 30 December 2011 13:54

Mauro Condarelli

Messages: 428
Registered: September 2009

Senior Member

Il 30/12/2011 14:40, Christian Dietrich ha scritto:
> Hi this is done with an ValueConverter
You mean I should override two classes
(AbstractDeclarativeValueConverterService & Xxx implements
IValueConverter<Integer>) to associate a value with a token?

Doing so seems the right way to go when You need a real conversion
(e.g.: String<=>Integer), but to associate a single static value to a
token seems a bit too much.

Am I forgetting something?

TiA
Mauro

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