hphp/hack/test/decl/readonly.php

   1 <?hh // strict
   2 <<file:__EnableUnstableFeatures('readonly')>>
   3 class Foo {
   4 }
   5
   6 async function returns_readonly() : readonly Awaitable<Foo> {
   7   return new Foo();
   8 }
   9
  10 async function returns_normal(): Awaitable<Foo> {
  11   return new Foo();
  12 }
  13
  14 class Bar {
  15   public readonly Foo $x;
  16
  17   public function __construct(
  18     public readonly Foo $y,
  19     ) {
  20     $this->x = new Foo();
  21   }
  22   public readonly function getFoo() : void {
  23     $f = /* <<readonly>> */  (Foo $y) ==> {return $y;};
  24     $z = readonly function(Foo $f)  : void {
  25     };
  26   }
  27
  28 }