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lib/Doctrine/MongoDB/ArrayIterator.php

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+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\MongoDB;
+
+/**
+ * ArrayIterator
+ *
+ * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @since       1.0
+ * @author      Jonathan H. Wage <[email protected]>
+ */
+class ArrayIterator implements Iterator
+{
+    private $elements;
+
+    public function __construct(array $elements = array())
+    {
+        $this->elements = $elements;
+    }
+
+    public function first()
+    {
+        return reset($this->elements);
+    }
+
+    public function last()
+    {
+        return end($this->elements);
+    }
+
+    public function key()
+    {
+        return key($this->elements);
+    }
+
+    public function next()
+    {
+        next($this->elements);
+    }
+
+    public function current()
+    {
+        return current($this->elements);
+    }
+
+    public function count()
+    {
+        return count($this->elements);
+    }
+
+    public function rewind()
+    {
+        reset($this->elements);
+    }
+
+    public function reset()
+    {
+        reset($this->elements);
+    }
+
+    public function valid()
+    {
+        return current($this->elements) !== false;
+    }
+
+    public function toArray()
+    {
+        return $this->elements;
+    }
+
+    public function getSingleResult()
+    {
+        $result = null;
+        $this->valid() ?: $this->next();
+        if ($this->valid()) {
+            $result = $this->current();
+        }
+        $this->reset();
+        return $result ? $result : null;
+    }
+}