hphp/test/quick/class_abstract_final1.php

   1 <?hh
   2
   3 class C {
   4   public $nonStaticInheritedProp;
   5
   6   public function nonStaticInheritedMethod() {
   7     echo __METHOD__, ' of ', static::class, "\n";
   8     echo 'this: ', isset($this) ? 'defined' : 'undefined', "\n";
   9   }
  10 }
  11
  12 trait Tr {
  13   require extends C;
  14
  15   public $nonStaticTraitProp;
  16
  17   public function nonStaticTraitMethod() {
  18     echo __METHOD__, ' of ', static::class, "\n";
  19     echo 'this: ', isset($this) ? 'defined' : 'undefined', "\n";
  20   }
  21   public static function staticTraitMethod() {
  22
  23     echo __METHOD__, "\n";
  24   }
  25
  26   abstract public function nonStaticAbstract();
  27 }
  28
  29 abstract final class Utils extends C {
  30   use Tr;
  31
  32   public static function staticMethod() {
  33     echo __METHOD__, "\n";
  34     static::protStaticMethod();
  35   }
  36
  37   private static function privStaticMethod() {
  38     echo __METHOD__, ' ', self::$prop, "\n";
  39   }
  40
  41   protected static function protStaticMethod() {
  42     echo __METHOD__, "\n";
  43     self::privStaticMethod();
  44   }
  45
  46   private static $prop = __CLASS__.'::prop';
  47 }
  48
  49 function main() {
  50   Utils::staticMethod();
  51   Utils::staticTraitMethod();
  52   Utils::nonStaticInheritedMethod(); // works because $this isn't accessed
  53   Utils::nonStaticTraitMethod(); // works because $this isn't accessed
  54
  55   $rc = new ReflectionClass(Utils::class);
  56   echo 'ReflectionClass::isAbstract', ' => ';
  57   var_dump($rc->isAbstract());
  58   echo 'ReflectionClass::isFinal', ' => ';
  59   var_dump($rc->isFinal());
  60   echo 'ReflectionClass::isInstantiable', ' => ';
  61   var_dump($rc->isInstantiable());
  62 }
  63
  64 main();
  65 echo 'Done', "\n";