array arr1 {
    elements {
        ele1, 
        element ele3 {
            price 10 
        }
    }
}

element ele1 {
    price 8
}

grammar org.mydsl.MyDsl with org.eclipse.xtext.common.Terminals

import "http://www.eclipse.org/emf/2002/Ecore" as ecore
generate myDsl "http://www.mydsl.org/MyDsl"

Model:
	greetings+=AbstractElement*;

AbstractElement:
	Array | Element
;

Array:
	'array' name=ID '{'
		'elements' '{' (elements+=[Element|EString] ("," elements+=[Element|EString])*)? '}'
	'}';

Element:
	'element' name=ID '{'
		'price' price=EInt
	'}'
;

EInt returns ecore::EInt:
	'-'? INT;

EString returns ecore::EString:
	STRING | ID;

array arr1 {
	elements {
		ele1,
		element ele2 {
			price 2
		}
	}
}

element ele1 {
	price 5
}