LARA

package toolc
package parser
 
object Trees {
  sealed trait Tree extends Positional
 
  case class Program(main: MainObject, classes: List[ClassDecl]) extends Tree
  case class MainObject(id: Identifier, stat: StatTree) extends Tree
  /* etc. */
 
  sealed trait TypeTree extends Tree
 
  case class IntType extends TypeTree
  /* etc. */
 
  sealed trait StatTree extends Tree
 
  case class Block(stats: List[StatTree]) extends StatTree
  /* etc. */
 
  sealed trait ExprTree extends Tree
 
  case class Plus(lhs: ExprTree, rhs: ExprTree) extends ExprTree
  /* etc. */
 
  case class Identifier(value: String) extends TypeTree with ExprTree // special case :)
}