upgraded dependencies

vendor/sebastian/code-unit/src/CodeUnitCollection.php

@@ -0,0 +1,84 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/code-unit.
+ *
+ * (c) 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 SebastianBergmann\CodeUnit;
+
+use function array_merge;
+use function count;
+use Countable;
+use IteratorAggregate;
+
+final class CodeUnitCollection implements Countable, IteratorAggregate
+{
+    /**
+     * @psalm-var list<CodeUnit>
+     */
+    private $codeUnits = [];
+
+    /**
+     * @psalm-param list<CodeUnit> $items
+     */
+    public static function fromArray(array $items): self
+    {
+        $collection = new self;
+
+        foreach ($items as $item) {
+            $collection->add($item);
+        }
+
+        return $collection;
+    }
+
+    public static function fromList(CodeUnit ...$items): self
+    {
+        return self::fromArray($items);
+    }
+
+    private function __construct()
+    {
+    }
+
+    /**
+     * @psalm-return list<CodeUnit>
+     */
+    public function asArray(): array
+    {
+        return $this->codeUnits;
+    }
+
+    public function getIterator(): CodeUnitCollectionIterator
+    {
+        return new CodeUnitCollectionIterator($this);
+    }
+
+    public function count(): int
+    {
+        return count($this->codeUnits);
+    }
+
+    public function isEmpty(): bool
+    {
+        return empty($this->codeUnits);
+    }
+
+    public function mergeWith(self $other): self
+    {
+        return self::fromArray(
+            array_merge(
+                $this->asArray(),
+                $other->asArray()
+            )
+        );
+    }
+
+    private function add(CodeUnit $item): void
+    {
+        $this->codeUnits[] = $item;
+    }
+}