gistfile1.txt

$ cat sandbox/test.scala; scalac -Yshow-trees -Xprint:typer sandbox/test.scala
trait T {
  private[this] var foo = 42;
}

class C {
  private[this] var foo = 42;
}

[[syntax trees at end of typer]]// Scala source: test.scala
PackageDef(
  "<empty>" // final package <empty>, tree.tpe=<empty>.type
  ClassDef( // abstract trait T extends AnyRef
    abstract <defaultparam/trait>
    "T"
    []
    Template( // val <local T>: <notype> in trait T, tree.tpe=T
      "java.lang.Object" // parents
      ValDef(
        private
        "_"
        <tpt>
        <empty>
      )
      // 3 statements
      DefDef( // def $init$(): Unit in trait T
        <method>
        "$init$"
        []
        List(Nil)
        <tpt> // tree.tpe=Unit
        Block( // tree.tpe=Unit
          {}
          ()
        )
      )
      ValDef( // private[this] def foo: Int in trait T
        <method> private <mutable> <local> <accessor>
        "foo"
        <tpt> // tree.tpe=Int
        42
      )
      DefDef( // private[this] def foo_=(x$1: Int): Unit in trait T
        <method> private <local> <accessor>
        "foo_$eq"
        []
        // 1 parameter list
        ValDef( // x$1: Int
          <param> <synthetic>
          "x$1"
          <tpt> // tree.tpe=Int
          <empty>
        )
        <tpt> // tree.tpe=Unit
        <empty>
      )
    )
  )
  ClassDef( // class C extends AnyRef
    0
    "C"
    []
    Template( // val <local C>: <notype> in class C, tree.tpe=C
      "java.lang.Object" // parents
      ValDef(
        private
        "_"
        <tpt>
        <empty>
      )
      // 2 statements
      DefDef( // def <init>(): C in class C
        <method>
        "<init>"
        []
        List(Nil)
        <tpt> // tree.tpe=C
        Block( // tree.tpe=Unit
          Apply( // def <init>(): Object in class Object, tree.tpe=Object
            C.super."<init>" // def <init>(): Object in class Object, tree.tpe=()Object
            Nil
          )
          ()
        )
      )
      ValDef( // private[this] var foo: Int in class C
        private <mutable> <local>
        "foo"
        <tpt> // tree.tpe=Int
        42
      )
    )
  )
)