symfony
diff --git a/‎src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
Lines changed: 28 additions & 0 deletions b/‎src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
Lines changed: 28 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php
Lines changed: 0 additions & 5 deletions b/‎src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php
Lines changed: 0 additions & 5 deletions
diff --git a/‎src/Symfony/Component/Config/Definition/Builder/NodeFinder.php
Lines changed: 0 additions & 52 deletions b/‎src/Symfony/Component/Config/Definition/Builder/NodeFinder.php
Lines changed: 0 additions & 52 deletions
diff --git a/‎src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
Lines changed: 52 additions & 0 deletions b/‎src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
Lines changed: 52 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Config/Tests/Definition/Builder/NodeFinderTest.php
Lines changed: 0 additions & 109 deletions b/‎src/Symfony/Component/Config/Tests/Definition/Builder/NodeFinderTest.php
Lines changed: 0 additions & 109 deletions
@@ -523,4 +523,32 @@ public function getChildNodeDefinitions()
     {
         return $this->children;
     }
+
+    /**
+     * Finds a node defined by the given $nodePath.
+     *
+     * @param string $nodePath The path of the node to find. e.g "doctrine.orm.mappings"
+     *
+     * @return NodeDefinition
+     */
+    public function find(string $nodePath): NodeDefinition
+    {
+        if ($nodePath === $this->name) {
+            return $this;
+        }
+
+        $firstPathSegment = strtok($nodePath, $this->pathSeparator);
+
+        if (!\array_key_exists($firstPathSegment, $this->getChildNodeDefinitions())) {
+            throw new \RuntimeException(sprintf('Node with name "%s" does not exist in the current node "%s"!', $firstPathSegment, $this->name));
+        }
+
+        $node = $this->getChildNodeDefinitions()[$firstPathSegment];
+
+        if (0 === substr_count($nodePath, $this->pathSeparator)) {
+            return $node;
+        }
+
+        return $node->find(substr($nodePath, strpos($nodePath, $this->pathSeparator)+1));
+    }
 }
@@ -44,11 +44,6 @@ public function __construct(?string $name, NodeParentInterface $parent = null)
         $this->name = $name;
     }
 
-    public function getName(): string
-    {
-        return $this->name;
-    }
-
     /**
      * Sets the parent node.
      *
 
@@ -13,6 +13,8 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
+use Symfony\Component\Config\Definition\Builder\BooleanNodeDefinition;
+use Symfony\Component\Config\Definition\Builder\NodeDefinition;
 use Symfony\Component\Config\Definition\Builder\ScalarNodeDefinition;
 use Symfony\Component\Config\Definition\Exception\InvalidDefinitionException;
 use Symfony\Component\Config\Definition\Processor;
@@ -357,6 +359,56 @@ public function testCannotBeEmptyOnConcreteNode()
         $node->getNode()->finalize([]);
     }
 
+    public function testFindShouldThrowExceptionIfNodeDoesNotExistInRootNode()
+    {
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Node with name "child" does not exist in the current node "root"!');
+
+        $rootNode = new ArrayNodeDefinition('root');
+        $rootNode
+            ->children()
+                ->arrayNode('social_media_channels')->end()
+            ->end()
+        ;
+
+        $rootNode->find('child');
+    }
+
+    public function testItShouldHandleComplexConfigurationProbably()
+    {
+        $rootNode = new ArrayNodeDefinition('root');
+        $rootNode
+            ->children()
+                ->arrayNode('social_media_channels')
+                    ->children()
+                        ->booleanNode('enable')->end()
+                        ->arrayNode('twitter')->end()
+                        ->arrayNode('facebook')->end()
+                        ->arrayNode('instagram')
+                            ->children()
+                                ->booleanNode('enable')->end()
+                                ->arrayNode('accounts')->end()
+                            ->end()
+                    ->end()
+                ->end()
+            ->end()
+        ;
+
+        $this->assertNode('social_media_channels', ArrayNodeDefinition::class, $rootNode->find('social_media_channels'));
+        $this->assertNode('enable', BooleanNodeDefinition::class, $rootNode->find('social_media_channels.enable'));
+        $this->assertNode('twitter', ArrayNodeDefinition::class, $rootNode->find('social_media_channels.twitter'));
+        $this->assertNode('facebook', ArrayNodeDefinition::class, $rootNode->find('social_media_channels.facebook'));
+        $this->assertNode('instagram', ArrayNodeDefinition::class, $rootNode->find('social_media_channels.instagram'));
+        $this->assertNode('enable', BooleanNodeDefinition::class, $rootNode->find('social_media_channels.instagram.enable'));
+        $this->assertNode('accounts', ArrayNodeDefinition::class, $rootNode->find('social_media_channels.instagram.accounts'));
+    }
+
+    protected function assertNode(string $expectedName, string $expectedType, NodeDefinition $actualNode): void
+    {
+        $this->assertInstanceOf($expectedType, $actualNode);
+        $this->assertSame($expectedName, $this->getField($actualNode, 'name'));
+    }
+
     protected function getField($object, $field)
     {
         $reflection = new \ReflectionProperty($object, $field);
Original file line number	Diff line number	Diff line change
`@@ -44,11 +44,6 @@ public function __construct(?string $name, NodeParentInterface $parent = null)`
`44`	`44`	`$this->name = $name;`
`45`	`45`	`}`
`46`	`46`
`47`		`- public function getName(): string`
`48`		`- {`
`49`		`- return $this->name;`
`50`		`- }`
`51`		`-`
`52`	`47`	`/**`
`53`	`48`	`* Sets the parent node.`
`54`	`49`	`*`