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

generate myDsl "http://www.xtext.org/example/mydsl/MyDsl"

DSL returns XTDSL:
	models+=Model*
;

Model returns XTModel:
	{XTModel} 'startList' '(' greetings+=Greeting*')'';';
	
Greeting returns XTGreeting:
	'list' ids_list=identifier_list ':' 'endlist' ';';

identifier_list returns XTIdentifierList:
	ids+=identifier (',' ids+=identifier)*
;

identifier returns XTIdentifier:
	{XTIdentifier} ID
;

	def dispatch void format(XTDSL xtdsl, extension IFormattableDocument document) {
		xtdsl.models.forEach[format]
	}

	def dispatch void format(XTModel xtmodel, extension IFormattableDocument document) {
		xtmodel.greetings.forEach[format; append[newLine]]
		xtmodel.regionFor.keyword("startList").append[oneSpace]
		xtmodel.regionFor.keyword("(").append[newLine]
		xtmodel.regionFor.keyword(")").prepend[noSpace]
		xtmodel.regionFor.keyword(";").prepend[noSpace]
		xtmodel.append[newLine]
		alignGreetingsOnOpenBracket(xtmodel.greetings, document)
	}

	def void alignGreetingsOnOpenBracket(EList<XTGreeting> greetings, extension IFormattableDocument document) {
		val precedingString = "startList ("
		for (greeting : greetings) {
			greeting.prepend[space = Strings.repeat(" ", precedingString .length); highPriority]
		}
	}

startList (
list A : endlist;
list B : endlist;
list C : endlist;
);

startList (
           list A : endlist;
           list B : endlist;
           list C : endlist;
);

greetingsList (
               greeting g1;
               greeting g2;
);

asdList (
         asd a1;
         asd a2;
);

state baz
     1***=> foo;
     12**=> foo;
     123*=> foo;
end

state baz
*****1   => foo;
*****12  => foo;
*****123 => foo;
end

state baz
*****1   => foo;
*****12  => foo;
*****123 => foo;
end
list bar
****1   => foo;
****12  => foo;
****123 => foo;
end