Upgrade framework

vendor/phar-io/manifest/src/values/RequirementCollectionIterator.php

@@ -0,0 +1,42 @@
+<?php declare(strict_types = 1);
+/*
+ * 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;
+
+class RequirementCollectionIterator implements \Iterator {
+    /** @var Requirement[] */
+    private $requirements;
+
+    /** @var int */
+    private $position = 0;
+
+    public function __construct(RequirementCollection $requirements) {
+        $this->requirements = $requirements->getRequirements();
+    }
+
+    public function rewind(): void {
+        $this->position = 0;
+    }
+
+    public function valid(): bool {
+        return $this->position < \count($this->requirements);
+    }
+
+    public function key(): int {
+        return $this->position;
+    }
+
+    public function current(): Requirement {
+        return $this->requirements[$this->position];
+    }
+
+    public function next(): void {
+        $this->position++;
+    }
+}