hphp/hack/test/typecheck/protected_inherit.php

   1 <?hh // strict
   2
   3 /**
   4  * Copyright (c) 2014, Facebook, Inc.
   5  * All rights reserved.
   6  *
   7  * This source code is licensed under the BSD-style license found in the
   8  * LICENSE file in the "hack" directory of this source tree. An additional grant
   9  * of patent rights can be found in the PATENTS file in the same directory.
  10  *
  11  */
  12 class AAA {
  13   protected function foo(): string { return 'a'; }
  14 }
  15 class BBB extends AAA {
  16   protected function foo(): string { return 'b'; }
  17 }
  18 class CCC extends AAA {
  19   public function bar(): string { return (new BBB())->foo(); }
  20   public function baz(): string { return $this->bbb()->foo(); }
  21   private function bbb(): AAA { return new BBB(); }
  22 }