// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

class C {
  int? i;
  int? j;

  get_field_via_explicit_this() {
    if (this.i == null) return;
    this.i. /*notPromoted(fieldNotPromoted(i))*/ isEven;
  }

  get_field_via_explicit_this_parenthesized() {
    if ((this).i == null) return;
    (this).i. /*notPromoted(fieldNotPromoted(i))*/ isEven;
  }

  get_field_by_implicit_this() {
    if (i == null) return;
    i. /*notPromoted(fieldNotPromoted(i))*/ isEven;
  }
}

class D extends C {
  get_field_via_explicit_super() {
    if (super.i == null) return;
    super.i. /*notPromoted(fieldNotPromoted(i))*/ isEven;
  }

  get_field_by_implicit_super() {
    if (i == null) return;
    i. /*notPromoted(fieldNotPromoted(i))*/ isEven;
  }
}

get_field_via_prefixed_identifier(C c) {
  if (c.i == null) return;
  c.i. /*notPromoted(fieldNotPromoted(i))*/ isEven;
}

get_field_via_prefixed_identifier_mismatched_target(C c1, C c2) {
  if (c1.i == null) return;
  c2.i.isEven;
}

get_field_via_prefixed_identifier_mismatched_property(C c) {
  if (c.i == null) return;
  c.j.isEven;
}