From 547ed6a2d5f2c3719ea355f41d431c73d813adab Mon Sep 17 00:00:00 2001
From: David Grudl <david@grudl.com>
Date: Thu, 17 Dec 2020 22:45:14 +0100
Subject: [PATCH] Type: PREVENT_MERGING prevents merging with defaults [Closes
 #14, Closes nette/application#257, nette/di#229]

---
 src/Schema/Elements/Structure.php |  3 +++
 src/Schema/Elements/Type.php      | 11 ++++++++-
 tests/Schema/Expect.array.phpt    | 37 ++++++++++++++++++++++++++++++-
 3 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/src/Schema/Elements/Structure.php b/src/Schema/Elements/Structure.php
index f40cf01..10a7a3f 100644
--- a/src/Schema/Elements/Structure.php
+++ b/src/Schema/Elements/Structure.php
@@ -83,6 +83,9 @@ public function normalize($value, Context $context)
 		}
 		if (is_array($value)) {
 			foreach ($value as $key => $val) {
+				if ($key === Helpers::PREVENT_MERGING) {
+					continue;
+				}
 				$itemSchema = $this->items[$key] ?? $this->otherItems;
 				if ($itemSchema) {
 					$context->path[] = $key;
diff --git a/src/Schema/Elements/Type.php b/src/Schema/Elements/Type.php
index 0a6ffa9..b7b4df5 100644
--- a/src/Schema/Elements/Type.php
+++ b/src/Schema/Elements/Type.php
@@ -106,6 +106,9 @@ public function normalize($value, Context $context)
 		$value = $this->doNormalize($value, $context);
 		if (is_array($value) && $this->items) {
 			foreach ($value as $key => $val) {
+				if ($key === Helpers::PREVENT_MERGING) {
+					continue;
+				}
 				$context->path[] = $key;
 				$value[$key] = $this->items->normalize($val, $context);
 				array_pop($context->path);
@@ -142,6 +145,12 @@ public function merge($value, $base)
 
 	public function complete($value, Context $context)
 	{
+		$merge = $this->merge;
+		if (is_array($value) && isset($value[Helpers::PREVENT_MERGING])) {
+			unset($value[Helpers::PREVENT_MERGING]);
+			$merge = false;
+		}
+
 		if ($value === null && is_array($this->default)) {
 			$value = []; // is unable to distinguish null from array in NEON
 		}
@@ -180,7 +189,7 @@ public function complete($value, Context $context)
 			}
 		}
 
-		if ($this->merge) {
+		if ($merge) {
 			$value = Helpers::merge($value, $this->default);
 		}
 		return $this->doFinalize($value, $context);
diff --git a/tests/Schema/Expect.array.phpt b/tests/Schema/Expect.array.phpt
index cf3ab45..b876abf 100644
--- a/tests/Schema/Expect.array.phpt
+++ b/tests/Schema/Expect.array.phpt
@@ -3,6 +3,7 @@
 declare(strict_types=1);
 
 use Nette\Schema\Expect;
+use Nette\Schema\Helpers;
 use Nette\Schema\Processor;
 use Tester\Assert;
 
@@ -90,7 +91,41 @@ test('merging', function () {
 		(new Processor)->process($schema, [
 			'key1' => 'newval',
 			'key3' => 'newval',
-			'newval3', 'arr' => ['newitem'],
+			'newval3',
+			'arr' => ['newitem'],
+		])
+	);
+
+	Assert::same(
+		[
+			'key1' => 'newval',
+			'key3' => 'newval',
+			'newval3',
+			'arr' => ['newitem'],
+		],
+		(new Processor)->process($schema, [
+			Helpers::PREVENT_MERGING => true,
+			'key1' => 'newval',
+			'key3' => 'newval',
+			'newval3',
+			'arr' => ['newitem'],
+		])
+	);
+
+	Assert::same(
+		[
+			'key1' => 'newval',
+			'key2' => 'val2',
+			'val3',
+			'arr' => ['newitem'],
+			'key3' => 'newval',
+			'newval3',
+		],
+		(new Processor)->process($schema, [
+			'key1' => 'newval',
+			'key3' => 'newval',
+			'newval3',
+			'arr' => [Helpers::PREVENT_MERGING => true, 'newitem'],
 		])
 	);
 });