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Differences Between: [Versions 311 and 401] [Versions 400 and 401]

   1  <?php
   2  /*
   3   * Copyright 2017-present MongoDB, Inc.
   4   *
   5   * Licensed under the Apache License, Version 2.0 (the "License");
   6   * you may not use this file except in compliance with the License.
   7   * You may obtain a copy of the License at
   8   *
   9   *   https://www.apache.org/licenses/LICENSE-2.0
  10   *
  11   * Unless required by applicable law or agreed to in writing, software
  12   * distributed under the License is distributed on an "AS IS" BASIS,
  13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14   * See the License for the specific language governing permissions and
  15   * limitations under the License.
  16   */
  17  
  18  namespace MongoDB\Model;
  19  
  20  use Closure;
  21  use Iterator;
  22  use IteratorIterator;
  23  use ReturnTypeWillChange;
  24  use Traversable;
  25  
  26  /**
  27   * Iterator to apply a callback before returning an element
  28   *
  29   * @internal
  30   */
  31  class CallbackIterator implements Iterator
  32  {
  33      /** @var Closure */
  34      private $callback;
  35  
  36      /** @var Iterator */
  37      private $iterator;
  38  
  39      public function __construct(Traversable $traversable, Closure $callback)
  40      {
  41          $this->iterator = $traversable instanceof Iterator ? $traversable : new IteratorIterator($traversable);
  42          $this->callback = $callback;
  43      }
  44  
  45      /**
  46       * @see https://php.net/iterator.current
  47       * @return mixed
  48       */
  49      #[ReturnTypeWillChange]
  50      public function current()
  51      {
  52          return ($this->callback)($this->iterator->current());
  53      }
  54  
  55      /**
  56       * @see https://php.net/iterator.key
  57       * @return mixed
  58       */
  59      #[ReturnTypeWillChange]
  60      public function key()
  61      {
  62          return $this->iterator->key();
  63      }
  64  
  65      /**
  66       * @see https://php.net/iterator.next
  67       */
  68      public function next(): void
  69      {
  70          $this->iterator->next();
  71      }
  72  
  73      /**
  74       * @see https://php.net/iterator.rewind
  75       */
  76      public function rewind(): void
  77      {
  78          $this->iterator->rewind();
  79      }
  80  
  81      /**
  82       * @see https://php.net/iterator.valid
  83       */
  84      public function valid(): bool
  85      {
  86          return $this->iterator->valid();
  87      }
  88  }