numberOfStatements.scala

@ def numberOfStatements(tree: Tree): Int = {
                   var n = 0
                   def loop(x: Tree): Unit = {
                     x match {
                       case t: Source => n += t.stats.length
                       case t: internal.ast.Pkg => n += t.stats.length
                       case t: internal.ast.Term.Match => n += t.cases.length
                       case t: internal.ast.Term.PartialFunction => n += t.cases.length
                       case t: internal.ast.Term.Block => n += t.stats.length
                       case t: internal.ast.Template if t.stats.isDefined =>
                         n += t.stats.get.length
                       case _ => // Nothing
                       }
                       x.children.foreach(loop)
                     }
                     loop(tree)
                     n
                 }
Main.scala:339: value stats is not a member of scala.meta.Source
      case t: Source => n += t.stats.length
                               ^
Compilation Failed