PhpAdapter supports prevention of array merging

src/DI/Config/Adapters/PhpAdapter.php

@@ -7,7 +7,8 @@
 
 namespace Nette\DI\Config\Adapters;
 
-use Nette;
+use Nette,
+	Nette\DI\Config\Helpers;
 
 
 /**
@@ -17,6 +18,8 @@
  */
 class PhpAdapter extends Nette\Object implements Nette\DI\Config\IAdapter
 {
+	/** @internal */
+	const PREVENT_MERGING = '!';
 
 	/**
 	 * Reads configuration from PHP file.
@@ -25,7 +28,34 @@ class PhpAdapter extends Nette\Object implements Nette\DI\Config\IAdapter
 	 */
 	public function load($file)
 	{
-		return require $file;
+		$config = require $file;
+		if (is_array($config)) {
+			return $this->process($config);
+		}
+		return $config;
+	}
+
+
+	private function process(array $arr)
+	{
+		$res = array();
+		foreach ($arr as $key => $val) {
+			if (substr($key, -1) === self::PREVENT_MERGING) {
+				if (!is_array($val) && $val !== NULL) {
+					throw new Nette\InvalidStateException("Replacing operator is available only for arrays, item '$key' is not array.");
+				}
+				$key = substr($key, 0, -1);
+				$val[Helpers::EXTENDS_KEY] = Helpers::OVERWRITE;
+
+			}
+
+			if (is_array($val)) {
+				$val = $this->process($val);
+
+			}
+			$res[$key] = $val;
+		}
+		return $res;
 	}
 
 

tests/DI/Loader.include.phpt

@@ -31,3 +31,16 @@ Assert::same( array(
 		'force' => array(1, 2),
 	),
 ), $data );
+
+$data = $config->load('files/loader.includes.php', 'common');
+
+Assert::same( array(
+	'parameters' => array(
+		'me' => array(
+			'loader.includes.child.php',
+		),
+		'scalar' => 1,
+		'list' => array(5, 6, 1, 2),
+		'force' => array(1, 2),
+	),
+), $data );

tests/DI/files/loader.includes.php

@@ -0,0 +1,14 @@
+<?php
+
+return array(
+	'common' => array(
+		'includes' => array(
+			'loader.includes.child.php',
+		),
+		'parameters' => array(
+			'scalar' => 1,
+			'list' => array(1, 2),
+			'force!' => array(1, 2),
+		),
+	),
+);