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Cann't get Array Type elements? [message #1691863]

Fri, 10 April 2015 08:31

Bob Tao

Messages: 23
Registered: March 2015

Junior Member

Hi all!

I'v know how to define array type grammar, like this:

UclArrayValue:
	'['
		(elements+=UclArrayElement (',' elements+=UclArrayElement)*)?
	']'
;
UclArrayElement:
	INT | STRING |UclObjectValue
;

the language example:

Product prod222
{
	prodID : 222;
	attributes[ "xxx","yyy"  ]; 
}

I can't get the UclArrayValue's elements instance.
my java code is as:

if(value instanceof UclArrayValue)
		{
			ArrayList attValueList=new ArrayList();
			
			UclArrayValue arrayValue=(UclArrayValue)value;
			EList<UclArrayElement> arrayElements=arrayValue.getElements();
			EList<EObject> sss=arrayValue.eContents();
			TreeIterator<EObject> iter=arrayValue.eAllContents();
			while(iter.hasNext())
			{
				EObject eo=iter.next();
				System.out.println(eo.toString());
			}
			for(UclArrayElement ele:arrayElements)
			{
				attValueList.add(ele.toString());
			}
		}

all the APIs can't give me elements list. getElements(),eContents() and eAllContents() return empty EList.

the XText version is 2.7.3.

thanks!

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Re: Cann't get Array Type elements? [message #1691877 is a reply to message #1691863]

Fri, 10 April 2015 09:25

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

is UclObjectValue a Object?

if so you may actually want to do

UclArrayElement:
value=AbstractValue
;

AbstractValue:
StringValue | IntValue| UclObjectValue;

IntValue:
value=INT;

StringValue:
value=STRING;

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

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