Add Composer autoloading functions and PHPStan for testing

vendor/nette/di/src/DI/Config/Helpers.php

@@ -0,0 +1,87 @@
+<?php
+
+/**
+ * This file is part of the Nette Framework (https://nette.org)
+ * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
+ */
+
+namespace Nette\DI\Config;
+
+use Nette;
+
+
+/**
+ * Configuration helpers.
+ */
+class Helpers
+{
+	use Nette\StaticClass;
+
+	const
+		EXTENDS_KEY = '_extends',
+		OVERWRITE = true;
+
+
+	/**
+	 * Merges configurations. Left has higher priority than right one.
+	 * @return array|string
+	 */
+	public static function merge($left, $right)
+	{
+		if (is_array($left) && is_array($right)) {
+			foreach ($left as $key => $val) {
+				if (is_int($key)) {
+					$right[] = $val;
+				} else {
+					if (is_array($val) && isset($val[self::EXTENDS_KEY])) {
+						if ($val[self::EXTENDS_KEY] === self::OVERWRITE) {
+							unset($val[self::EXTENDS_KEY]);
+						}
+					} elseif (isset($right[$key])) {
+						$val = static::merge($val, $right[$key]);
+					}
+					$right[$key] = $val;
+				}
+			}
+			return $right;
+
+		} elseif ($left === null && is_array($right)) {
+			return $right;
+
+		} else {
+			return $left;
+		}
+	}
+
+
+	/**
+	 * Finds out and removes information about the parent.
+	 * @return mixed
+	 */
+	public static function takeParent(&$data)
+	{
+		if (is_array($data) && isset($data[self::EXTENDS_KEY])) {
+			$parent = $data[self::EXTENDS_KEY];
+			unset($data[self::EXTENDS_KEY]);
+			return $parent;
+		}
+	}
+
+
+	/**
+	 * @return bool
+	 */
+	public static function isOverwriting(&$data)
+	{
+		return is_array($data) && isset($data[self::EXTENDS_KEY]) && $data[self::EXTENDS_KEY] === self::OVERWRITE;
+	}
+
+
+	/**
+	 * @return bool
+	 */
+	public static function isInheriting(&$data)
+	{
+		return is_array($data) && isset($data[self::EXTENDS_KEY]) && $data[self::EXTENDS_KEY] !== self::OVERWRITE;
+	}
+}