hphp/test/quick/generator_vars.php

   1 <?hh
   2
   3 class logger {
   4   static $x = 0;
   5   private $idx;
   6   function __construct() {
   7     $this->idx = self::$x++;
   8     printf("logger %d constructing\n", $this->idx);
   9   }
  10 }
  11
  12 function create() {
  13   $x = 5;
  14   yield $x;
  15   $s = 'foo';
  16   yield $s;
  17   $foo = 1234;
  18   $z = $foo;
  19   yield $z;
  20   yield $foo;
  21 }
  22
  23 function unusedarg($x, $y) {
  24   $z = 5;
  25   yield darray['x' => $x, 'z' => $z];
  26   $s = 'foo';
  27   yield 'almost there';
  28   $foo = 'inside foo';
  29   yield darray['foo' => $foo, 's' => $s];
  30   yield darray['x' => $x, 'y' => $y, 'foo' => $foo, 'z' => $z];
  31 }
  32
  33 function dumpgen($g) {
  34   foreach ($g as $v) {
  35     var_dump($v);
  36   }
  37 }
  38
  39 function getargs(...$args) {
  40   yield 0xdeadbeef;
  41   yield $args;
  42   yield $args[3];
  43 }
  44
  45 function genthrow() {
  46   throw new Exception();
  47   yield 5;
  48 }
  49
  50 function manylocals() {
  51   $a = 1;
  52   $b = 2;
  53   $c = 3;
  54   $d = 4;
  55   $e = 5;
  56   $f = 6;
  57   $g = 7;
  58   $h = 8;
  59   $i = 9;
  60   $j = 10;
  61   $k = 11;
  62   $l = 12;
  63   $a = yield darray['a' => $a, 'b' => $b, 'c' => $c, 'd' => $d, 'e' => $e, 'f' => $f, 'g' => $g, 'h' => $h, 'i' => $i, 'j' => $j, 'k' => $k, 'l' => $l];
  64   $b = 0xdeadbeef;
  65   $c = yield darray['a' => $a, 'b' => $b, 'c' => $c, 'd' => $d, 'e' => $e, 'f' => $f, 'g' => $g, 'h' => $h, 'i' => $i, 'j' => $j, 'k' => $k, 'l' => $l];
  66   $d = $e = 0xba53b411;
  67   yield darray['a' => $a, 'b' => $b, 'c' => $c, 'd' => $d, 'e' => $e, 'f' => $f, 'g' => $g, 'h' => $h, 'i' => $i, 'j' => $j, 'k' => $k, 'l' => $l];
  68 }
  69
  70 <<__EntryPoint>> function main(): void {
  71   dumpgen(create());
  72   dumpgen(unusedarg(new logger(), 5));
  73   dumpgen(getargs(1, 2, 3, 4, 5));
  74   $g = genthrow();
  75   try {
  76     $g->next();
  77   } catch (Exception $e) {}
  78   try {
  79     $g->next();
  80   } catch (Exception $e) {
  81     var_dump($e->getMessage());
  82   }
  83
  84   $g = manylocals();
  85   $g->next();
  86   var_dump($g->current());
  87   $g->send(new stdclass);
  88   var_dump($g->current());
  89   $g->send($g);
  90   var_dump($g->current());
  91   $g->next();
  92   var_dump($g->current());
  93   var_dump($g->valid());
  94 }