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vendor/phar-io/manifest/src/xml/ElementCollection.php

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+<?php
+/*
+ * This file is part of PharIo\Manifest.
+ *
+ * (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace PharIo\Manifest;
+
+use DOMElement;
+use DOMNodeList;
+
+abstract class ElementCollection implements \Iterator {
+    /**
+     * @var DOMNodeList
+     */
+    private $nodeList;
+
+    private $position;
+
+    /**
+     * ElementCollection constructor.
+     *
+     * @param DOMNodeList $nodeList
+     */
+    public function __construct(DOMNodeList $nodeList) {
+        $this->nodeList = $nodeList;
+        $this->position = 0;
+    }
+
+    abstract public function current();
+
+    /**
+     * @return DOMElement
+     */
+    protected function getCurrentElement() {
+        return $this->nodeList->item($this->position);
+    }
+
+    public function next() {
+        $this->position++;
+    }
+
+    public function key() {
+        return $this->position;
+    }
+
+    public function valid() {
+        return $this->position < $this->nodeList->length;
+    }
+
+    public function rewind() {
+        $this->position = 0;
+    }
+}