hphp/hack/test/typecheck/test_inter.php

   1 <?hh
   2 /**
   3  * Copyright (c) 2014, Facebook, Inc.
   4  * All rights reserved.
   5  *
   6  * This source code is licensed under the BSD-style license found in the
   7  * LICENSE file in the "hack" directory of this source tree. An additional grant
   8  * of patent rights can be found in the PATENTS file in the same directory.
   9  *
  10  */
  11
  12 interface I {}
  13 class A implements I {}
  14 class B implements I {}
  15
  16 function inter_switch(): I {
  17   switch(9) {
  18   case 0:
  19     $x = new A();
  20     break;
  21   case 1:
  22     $x = new B();
  23     break;
  24   default:
  25     throw new Exception('bad');
  26   }
  27   return $x;
  28 }