fun foo() {
  return false

  fun a() = {when(x) { is a => b }}

  // foo
  fun b() {}

}

fun foo() {
  when (e) {
                          
  }
  when (e) {
    is a => foo
  }
  when (e) {
    is Tree @ (a, b) => foo
    is null => foo
    is 1 => foo
    is A.b => foo
    is 1.0 => foo
    is 'c' => foo
    is "sadfsa" => foo
    is """ddd""" => foo
    is * => foo
    is val a is Foo => foo
    is (val a is Foo, b) => foo
  }
  when (when(when (e) {

  }) {

  }) {

  }
}

fun foo() {
  when (val a = e) {
    is Tree => c
    is Tree @ (null, val r) => c
    is a @ (a, b) => c
    is a @ (a, b) => c
    is a.a @ (a, b) => c
    is a.a @ (foo = a, bar = b) => c
    is namespace.a.a @ (a, b) => c
    is a @ (val a is T, b) => c
    is a @ (b, 1) => c
    in 1..2 => dsf
    !in 2 => sd
    !is t => d
    is fun (foo) : Bar => fgpp
    is (1, val a is Foo, *, Foo, bar) => d
    is (Foo, val a in 1..2, *, val _ !is Foo, val bar is foo.bar<a> @ (a)) => d
    is (Int, Int) => 2
    is val a : Foo => 2
    else => foo
  }
}

fun foo() {
  when (val a = e) {
    is Tree,
    is Tree @ (null, val r),
    is a @ (a, b) => c
    1, foo(), bar, 2 + 3,
    is a @ (a, b) => c
    is a.a @ (val b, b) => c
  }
}