vendor/doctrine/collections/src/AbstractLazyCollection.php line 313

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  1. <?php
  3. declare(strict_types=1);
  5. namespace Doctrine\Common\Collections;
  7. use Closure;
  8. use LogicException;
  9. use ReturnTypeWillChange;
  10. use Traversable;
  12. /**
  13.  * Lazy collection that is backed by a concrete collection
  14.  *
  15.  * @psalm-template TKey of array-key
  16.  * @psalm-template T
  17.  * @template-implements Collection<TKey,T>
  18.  */
  19. abstract class AbstractLazyCollection implements Collection
  20. {
  21.     /**
  22.      * The backed collection to use
  23.      *
  24.      * @psalm-var Collection<TKey,T>|null
  25.      * @var Collection<mixed>|null
  26.      */
  27.     protected Collection|null $collection;
  29.     protected bool $initialized = false;
  31.     /**
  32.      * {@inheritDoc}
  33.      *
  34.      * @return int
  35.      */
  36.     #[ReturnTypeWillChange]
  37.     public function count()
  38.     {
  39.         $this->initialize();
  41.         return $this->collection->count();
  42.     }
  44.     /**
  45.      * {@inheritDoc}
  46.      */
  47.     public function add(mixed $element)
  48.     {
  49.         $this->initialize();
  51.         $this->collection->add($element);
  52.     }
  54.     /**
  55.      * {@inheritDoc}
  56.      */
  57.     public function clear()
  58.     {
  59.         $this->initialize();
  60.         $this->collection->clear();
  61.     }
  63.     /**
  64.      * {@inheritDoc}
  65.      */
  66.     public function contains(mixed $element)
  67.     {
  68.         $this->initialize();
  70.         return $this->collection->contains($element);
  71.     }
  73.     /**
  74.      * {@inheritDoc}
  75.      */
  76.     public function isEmpty()
  77.     {
  78.         $this->initialize();
  80.         return $this->collection->isEmpty();
  81.     }
  83.     /**
  84.      * {@inheritDoc}
  85.      */
  86.     public function remove(string|int $key)
  87.     {
  88.         $this->initialize();
  90.         return $this->collection->remove($key);
  91.     }
  93.     /**
  94.      * {@inheritDoc}
  95.      */
  96.     public function removeElement(mixed $element)
  97.     {
  98.         $this->initialize();
  100.         return $this->collection->removeElement($element);
  101.     }
  103.     /**
  104.      * {@inheritDoc}
  105.      */
  106.     public function containsKey(string|int $key)
  107.     {
  108.         $this->initialize();
  110.         return $this->collection->containsKey($key);
  111.     }
  113.     /**
  114.      * {@inheritDoc}
  115.      */
  116.     public function get(string|int $key)
  117.     {
  118.         $this->initialize();
  120.         return $this->collection->get($key);
  121.     }
  123.     /**
  124.      * {@inheritDoc}
  125.      */
  126.     public function getKeys()
  127.     {
  128.         $this->initialize();
  130.         return $this->collection->getKeys();
  131.     }
  133.     /**
  134.      * {@inheritDoc}
  135.      */
  136.     public function getValues()
  137.     {
  138.         $this->initialize();
  140.         return $this->collection->getValues();
  141.     }
  143.     /**
  144.      * {@inheritDoc}
  145.      */
  146.     public function set(string|int $key, mixed $value)
  147.     {
  148.         $this->initialize();
  149.         $this->collection->set($key, $value);
  150.     }
  152.     /**
  153.      * {@inheritDoc}
  154.      */
  155.     public function toArray()
  156.     {
  157.         $this->initialize();
  159.         return $this->collection->toArray();
  160.     }
  162.     /**
  163.      * {@inheritDoc}
  164.      */
  165.     public function first()
  166.     {
  167.         $this->initialize();
  169.         return $this->collection->first();
  170.     }
  172.     /**
  173.      * {@inheritDoc}
  174.      */
  175.     public function last()
  176.     {
  177.         $this->initialize();
  179.         return $this->collection->last();
  180.     }
  182.     /**
  183.      * {@inheritDoc}
  184.      */
  185.     public function key()
  186.     {
  187.         $this->initialize();
  189.         return $this->collection->key();
  190.     }
  192.     /**
  193.      * {@inheritDoc}
  194.      */
  195.     public function current()
  196.     {
  197.         $this->initialize();
  199.         return $this->collection->current();
  200.     }
  202.     /**
  203.      * {@inheritDoc}
  204.      */
  205.     public function next()
  206.     {
  207.         $this->initialize();
  209.         return $this->collection->next();
  210.     }
  212.     /**
  213.      * {@inheritDoc}
  214.      */
  215.     public function exists(Closure $p)
  216.     {
  217.         $this->initialize();
  219.         return $this->collection->exists($p);
  220.     }
  222.     /**
  223.      * {@inheritDoc}
  224.      */
  225.     public function findFirst(Closure $p)
  226.     {
  227.         $this->initialize();
  229.         return $this->collection->findFirst($p);
  230.     }
  232.     /**
  233.      * {@inheritDoc}
  234.      */
  235.     public function filter(Closure $p)
  236.     {
  237.         $this->initialize();
  239.         return $this->collection->filter($p);
  240.     }
  242.     /**
  243.      * {@inheritDoc}
  244.      */
  245.     public function forAll(Closure $p)
  246.     {
  247.         $this->initialize();
  249.         return $this->collection->forAll($p);
  250.     }
  252.     /**
  253.      * {@inheritDoc}
  254.      */
  255.     public function map(Closure $func)
  256.     {
  257.         $this->initialize();
  259.         return $this->collection->map($func);
  260.     }
  262.     /**
  263.      * {@inheritDoc}
  264.      */
  265.     public function reduce(Closure $func, mixed $initial = null)
  266.     {
  267.         $this->initialize();
  269.         return $this->collection->reduce($func, $initial);
  270.     }
  272.     /**
  273.      * {@inheritDoc}
  274.      */
  275.     public function partition(Closure $p)
  276.     {
  277.         $this->initialize();
  279.         return $this->collection->partition($p);
  280.     }
  282.     /**
  283.      * {@inheritDoc}
  284.      *
  285.      * @template TMaybeContained
  286.      */
  287.     public function indexOf(mixed $element)
  288.     {
  289.         $this->initialize();
  291.         return $this->collection->indexOf($element);
  292.     }
  294.     /**
  295.      * {@inheritDoc}
  296.      */
  297.     public function slice(int $offset, int|null $length = null)
  298.     {
  299.         $this->initialize();
  301.         return $this->collection->slice($offset, $length);
  302.     }
  304.     /**
  305.      * {@inheritDoc}
  306.      *
  307.      * @return Traversable<int|string, mixed>
  308.      * @psalm-return Traversable<TKey,T>
  309.      */
  310.     #[ReturnTypeWillChange]
  311.     public function getIterator()
  312.     {
  313.         $this->initialize();
  315.         return $this->collection->getIterator();
  316.     }
  318.     /**
  319.      * {@inheritDoc}
  320.      *
  321.      * @param TKey $offset
  322.      *
  323.      * @return bool
  324.      */
  325.     #[ReturnTypeWillChange]
  326.     public function offsetExists(mixed $offset)
  327.     {
  328.         $this->initialize();
  330.         return $this->collection->offsetExists($offset);
  331.     }
  333.     /**
  334.      * {@inheritDoc}
  335.      *
  336.      * @param TKey $offset
  337.      *
  338.      * @return T|null
  339.      */
  340.     #[ReturnTypeWillChange]
  341.     public function offsetGet(mixed $offset)
  342.     {
  343.         $this->initialize();
  345.         return $this->collection->offsetGet($offset);
  346.     }
  348.     /**
  349.      * {@inheritDoc}
  350.      *
  351.      * @param TKey|null $offset
  352.      * @param T         $value
  353.      *
  354.      * @return void
  355.      */
  356.     #[ReturnTypeWillChange]
  357.     public function offsetSet(mixed $offset, mixed $value)
  358.     {
  359.         $this->initialize();
  360.         $this->collection->offsetSet($offset, $value);
  361.     }
  363.     /**
  364.      * @param TKey $offset
  365.      *
  366.      * @return void
  367.      */
  368.     #[ReturnTypeWillChange]
  369.     public function offsetUnset(mixed $offset)
  370.     {
  371.         $this->initialize();
  372.         $this->collection->offsetUnset($offset);
  373.     }
  375.     /**
  376.      * Is the lazy collection already initialized?
  377.      *
  378.      * @return bool
  379.      *
  380.      * @psalm-assert-if-true Collection<TKey,T> $this->collection
  381.      */
  382.     public function isInitialized()
  383.     {
  384.         return $this->initialized;
  385.     }
  387.     /**
  388.      * Initialize the collection
  389.      *
  390.      * @return void
  391.      *
  392.      * @psalm-assert Collection<TKey,T> $this->collection
  393.      */
  394.     protected function initialize()
  395.     {
  396.         if ($this->initialized) {
  397.             return;
  398.         }
  400.         $this->doInitialize();
  401.         $this->initialized = true;
  403.         if ($this->collection === null) {
  404.             throw new LogicException('You must initialize the collection property in the doInitialize() method.');
  405.         }
  406.     }
  408.     /**
  409.      * Do the initialization logic
  410.      *
  411.      * @return void
  412.      */
  413.     abstract protected function doInitialize();
  414. }