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PROBLEM: JvmTypeReference to Enum within a class does NOT work [message #744098]

Fri, 21 October 2011 19:31

Eclipse User

I have the following (partly) grammar:


Import:
	'import' importedNamespace=QualifiedNameWithWildCard ';'
;

QualifiedNameWithWildCard:
	QualifiedName ('.' '*')?
;

Attribute:
	name = ID ':' type = JvmTypeReference ';'
;

It accepts the creation of an attribute, but there is a problem with the JvmTypeReference to an enum. Referring to an enum that is in a file of its own works fine, after importing it. But when trying to refer to an enum within an (abstract) class, both public does not work.

Example Code:
AbstractClass.java does NOT work

public abstract class AbstractClass {
	
	public enum InnerEnum{
		One(1),
		Two(2)

		private int number = -1;
		private InnerEnum(int code){
			this.number = code;
		}

		public int getNumber(){
			return number;
		}
	}
}

and this DOES work:
InnerEnum.java

public enum InnerEnum{
	One(1),
	Two(2)

	private int number = -1;
	private InnerEnum(int code){
		this.number = code;
	}

	public int getNumber(){
		return number;
	}
}

How can I change my syntax to allow the InnerEnum to be accepted as the type for the Attribute?

Thanks a lot,
Erik

[Updated on: Fri, 21 October 2011 19:45] by Moderator

Re: PROBLEM: JvmTypeReference to Enum within a class [message #744102 is a reply to message #744098]

Fri, 21 October 2011 19:33

Eclipse User

It did not allow me to add the import links, because I did not yet post 5 messages, but I have these two lines in my grammar:
import "http :// www . eclipse .org / xtext / common / JavaVMTypes" as types
import "http :// www . eclipse .org / emf / 2002 / Ecore" as ecore

Without the spaces of course.

[Updated on: Fri, 21 October 2011 19:33] by Moderator

Re: PROBLEM: JvmTypeReference to Enum within a class [message #744764 is a reply to message #744102]

Sat, 22 October 2011 06:16

Eclipse User

Hi,

how does your import look like?

aimport like

import org.eclipse.xtext.example.domainmodel.AbstractClass$InnerEnum

attr : AbstractClass$InnerEnum

works for me

~Christian

Re: PROBLEM: JvmTypeReference to Enum within a class [message #748103 is a reply to message #744764]

Mon, 24 October 2011 09:44

Eclipse User

Ah thanks a lot. That works!

The $ feels slightly cumbersome and counter intuitive though, just for my understanding, why isn't this possible?

import org.eclipse.xtext.example.domainmodel.AbstractClass.InnerEnum

attr : InnerEnum

Like it would be in java.

Anyway, thanks again!

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