Model:
elements+=Element*
;
Type:
SimpleType
;
SimpleType:
type = BaseType
;
enum BaseType:
INT_TYPE = "int" | BOOL_TYPE = 'bool'
;
enum BoolValue:
True = "true" | False = "false"
;
Signature:
type=Type name=ID
;
Element: VarDeclaration; /*| FunctionDeclaration;*/

//DICHIARAZIONE DELLE VARIABILI
VarDeclaration:
var=Signature ('=' init=Expression)? ";"
;

Expression:
OrExpression
;
OrExpression returns Expression:
AndExpression ( { OrExpression.left=current } "||" right=OrExpression )?
;
AndExpression returns Expression:
Relation ( { AndExpression.left=current } "&&" right=AndExpression )?
;
Relation returns Expression:
SumExpression ( {Relation.left=current} op=comparisonOperators right=SumExpression )?
;
SumExpression returns Expression:
MulExpression ( {SumExpression.left=current} op=('+'|'-'|'%') right=SumExpression)?
;
MulExpression returns Expression:
BaseExpression ( {MulExpression.left=current} op=('*'|'/') right=MulExpression)?
;

BaseExpression returns Expression:
IntConstant
| BoolConstant
;
IntConstant:
value=INT
;

BoolConstant:
value=BoolValue
;

def toJavaCode(Model model) '''
import «model.importSection.importedNamespace»

public class «model.eResource.className» {

public static void main(String[] args) {

}

«FOR c : model.elements.filter(typeof(VarDeclaration))»
«c.declareVariable»
«ENDFOR»
}
'''

def declareVariable(VarDeclaration command) '''
«IF command.^var.type.toString.contains("int")»
private int «command.^var.getName()» = «command.getInt()»
«ELSEIF command.^var.type.toString.contains("bool")»
private boolean «command.^var.getName()» = «command.getInt()»
«ENDIF»
'''

int value = 5;

private int value = org.xtext.mydsl.smallJava.impl.IntConstantImpl@67cbff1c (value: 5)