symfony · fabpot · Jun 25, 2018 · Jun 2, 2018 · Taluu · Jun 5, 2018
diff --git a/UPGRADE-4.2.md b/UPGRADE-4.2.md
@@ -6,6 +6,11 @@ Cache
 
  * Deprecated `CacheItem::getPreviousTags()`, use `CacheItem::getMetadata()` instead.
 
+Config
+------
+
+ * Deprecated constructing a `TreeBuilder` without passing root node information.
+
 Security
 --------
 

diff --git a/UPGRADE-5.0.md b/UPGRADE-5.0.md
@@ -9,6 +9,7 @@ Cache
 Config
 ------
 
+ * Dropped support for constructing a `TreeBuilder` without passing root node information.
  * Added the `getChildNodeDefinitions()` method to `ParentNodeDefinitionInterface`.
  * The `Processor` class has been made final
 

diff --git a/src/Symfony/Bundle/DebugBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/DebugBundle/DependencyInjection/Configuration.php
@@ -26,10 +26,9 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('debug');
+        $treeBuilder = new TreeBuilder('debug');
 
-        $rootNode
+        $treeBuilder->getRootNode()
             ->children()
                 ->integerNode('max_items')
                     ->info('Max number of displayed items past the first level, -1 means no limit')

diff --git a/src/Symfony/Bundle/DebugBundle/composer.json b/src/Symfony/Bundle/DebugBundle/composer.json
@@ -23,11 +23,12 @@
         "symfony/var-dumper": "~4.1"
     },
     "require-dev": {
-        "symfony/config": "~3.4|~4.0",
+        "symfony/config": "~4.2",
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/web-profiler-bundle": "~3.4|~4.0"
     },
     "conflict": {
+        "symfony/config": "<4.2",
         "symfony/dependency-injection": "<3.4"
     },
     "suggest": {

diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -54,8 +54,8 @@ public function __construct(bool $debug)
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('framework');
+        $treeBuilder = new TreeBuilder('framework');
+        $rootNode = $treeBuilder->getRootNode();
 
         $rootNode
             ->beforeNormalization()

diff --git a/.../FrameworkBundle/Tests/Functional/Bundle/TestBundle/DependencyInjection/Configuration.php b/.../FrameworkBundle/Tests/Functional/Bundle/TestBundle/DependencyInjection/Configuration.php
@@ -25,11 +25,10 @@ public function __construct($customConfig = null)
 
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('test');
+        $treeBuilder = new TreeBuilder('test');
 
         if ($this->customConfig) {
-            $this->customConfig->addConfiguration($rootNode);
+            $this->customConfig->addConfiguration($treeBuilder->getRootNode());
         }
 
         return $treeBuilder;

diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -20,7 +20,7 @@
         "ext-xml": "*",
         "symfony/cache": "~3.4|~4.0",
         "symfony/dependency-injection": "^4.1.1",
-        "symfony/config": "~3.4|~4.0",
+        "symfony/config": "~4.2",
         "symfony/event-dispatcher": "^4.1",
         "symfony/http-foundation": "^4.1",
         "symfony/http-kernel": "^4.1",

diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
@@ -41,8 +41,8 @@ public function __construct(array $factories, array $userProviderFactories)
      */
     public function getConfigTreeBuilder()
     {
-        $tb = new TreeBuilder();
-        $rootNode = $tb->root('security');
+        $tb = new TreeBuilder('security');
+        $rootNode = $tb->getRootNode();
 
         $rootNode
             ->beforeNormalization()

diff --git a/src/Symfony/Bundle/SecurityBundle/composer.json b/src/Symfony/Bundle/SecurityBundle/composer.json
@@ -18,6 +18,7 @@
     "require": {
         "php": "^7.1.3",
         "ext-xml": "*",
+        "symfony/config": "^4.2",
         "symfony/security": "~4.2",
         "symfony/dependency-injection": "^3.4.3|^4.0.3",
         "symfony/http-kernel": "^4.1"

diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
@@ -29,8 +29,8 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('twig');
+        $treeBuilder = new TreeBuilder('twig');
+        $rootNode = $treeBuilder->getRootNode();
 
         $rootNode
             ->children()

diff --git a/src/Symfony/Bundle/TwigBundle/composer.json b/src/Symfony/Bundle/TwigBundle/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": "^7.1.3",
-        "symfony/config": "~3.4|~4.0",
+        "symfony/config": "~4.2",
         "symfony/twig-bridge": "^3.4.3|^4.0.3",
         "symfony/http-foundation": "~3.4|~4.0",
         "symfony/http-kernel": "~3.4|~4.0",

diff --git a/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php
@@ -31,10 +31,9 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('web_profiler');
+        $treeBuilder = new TreeBuilder('web_profiler');
 
-        $rootNode
+        $treeBuilder->getRootNode()
             ->children()
                 ->booleanNode('toolbar')->defaultFalse()->end()
                 ->booleanNode('intercept_redirects')->defaultFalse()->end()

diff --git a/src/Symfony/Bundle/WebProfilerBundle/composer.json b/src/Symfony/Bundle/WebProfilerBundle/composer.json
@@ -17,20 +17,19 @@
     ],
     "require": {
         "php": "^7.1.3",
+        "symfony/config": "^4.2",
         "symfony/http-kernel": "~4.1",
         "symfony/routing": "~3.4|~4.0",
         "symfony/twig-bundle": "^3.4.3|^4.0.3",
         "symfony/var-dumper": "~3.4|~4.0",
         "twig/twig": "~1.34|~2.4"
     },
     "require-dev": {
-        "symfony/config": "~3.4|~4.0",
         "symfony/console": "~3.4|~4.0",
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/stopwatch": "~3.4|~4.0"
     },
     "conflict": {
-        "symfony/config": "<3.4",
         "symfony/dependency-injection": "<3.4",
         "symfony/event-dispatcher": "<3.4",
         "symfony/var-dumper": "<3.4"

diff --git a/src/Symfony/Component/Config/CHANGELOG.md b/src/Symfony/Component/Config/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+4.2.0
+-----
+
+ * deprecated constructing a `TreeBuilder` without passing root node information
+
 4.1.0
 -----
 

diff --git a/src/Symfony/Component/Config/Definition/Builder/TreeBuilder.php b/src/Symfony/Component/Config/Definition/Builder/TreeBuilder.php
@@ -24,6 +24,15 @@ class TreeBuilder implements NodeParentInterface
     protected $tree;
     protected $root;
 
+    public function __construct(string $name = null, string $type = 'array', NodeBuilder $builder = null)
+    {
+        if (null === $name) {
+            @trigger_error('A tree builder without a root node is deprecated since Symfony 4.2 and will not be supported anymore in 5.0.', E_USER_DEPRECATED);
+        } else {
+            $this->root($name, $type, $builder);
+        }
+    }
+
     /**
      * Creates the root node.
      *
@@ -42,6 +51,15 @@ public function root($name, $type = 'array', NodeBuilder $builder = null)
         return $this->root = $builder->node($name, $type)->setParent($this);
     }
 
+    public function getRootNode(): NodeDefinition
+    {
+        if (null === $this->root) {
+            throw new \RuntimeException(sprintf('Calling %s() before creating the root node is not supported, migrate to the new constructor signature instead.', __METHOD__));
+        }
+
+        return $this->root;
+    }
+
     /**
      * Builds the tree.
      *

diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
@@ -212,10 +212,10 @@ public function testEndThenPartNotSpecified()
      */
     protected function getTestBuilder()
     {
-        $builder = new TreeBuilder();
+        $builder = new TreeBuilder('test');
 
         return $builder
-            ->root('test')
+            ->getRootNode()
             ->children()
             ->variableNode('key')
             ->validate()

diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
@@ -19,10 +19,9 @@ class TreeBuilderTest extends TestCase
 {
     public function testUsingACustomNodeBuilder()
     {
-        $builder = new TreeBuilder();
-        $root = $builder->root('custom', 'array', new CustomNodeBuilder());
+        $builder = new TreeBuilder('custom', 'array', new CustomNodeBuilder());
 
-        $nodeBuilder = $root->children();
+        $nodeBuilder = $builder->getRootNode()->children();
 
         $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\NodeBuilder', $nodeBuilder);
 
@@ -33,49 +32,46 @@ public function testUsingACustomNodeBuilder()
 
     public function testOverrideABuiltInNodeType()
     {
-        $builder = new TreeBuilder();
-        $root = $builder->root('override', 'array', new CustomNodeBuilder());
+        $builder = new TreeBuilder('override', 'array', new CustomNodeBuilder());
 
-        $definition = $root->children()->variableNode('variable');
+        $definition = $builder->getRootNode()->children()->variableNode('variable');
 
         $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\VariableNodeDefinition', $definition);
     }
 
     public function testAddANodeType()
     {
-        $builder = new TreeBuilder();
-        $root = $builder->root('override', 'array', new CustomNodeBuilder());
+        $builder = new TreeBuilder('override', 'array', new CustomNodeBuilder());
 
-        $definition = $root->children()->barNode('variable');
+        $definition = $builder->getRootNode()->children()->barNode('variable');
 
         $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\BarNodeDefinition', $definition);
     }
 
     public function testCreateABuiltInNodeTypeWithACustomNodeBuilder()
     {
-        $builder = new TreeBuilder();
-        $root = $builder->root('builtin', 'array', new CustomNodeBuilder());
+        $builder = new TreeBuilder('builtin', 'array', new CustomNodeBuilder());
 
-        $definition = $root->children()->booleanNode('boolean');
+        $definition = $builder->getRootNode()->children()->booleanNode('boolean');
 
         $this->assertInstanceOf('Symfony\Component\Config\Definition\Builder\BooleanNodeDefinition', $definition);
     }
 
     public function testPrototypedArrayNodeUseTheCustomNodeBuilder()
     {
-        $builder = new TreeBuilder();
-        $root = $builder->root('override', 'array', new CustomNodeBuilder());
+        $builder = new TreeBuilder('override', 'array', new CustomNodeBuilder());
 
+        $root = $builder->getRootNode();
         $root->prototype('bar')->end();
 
         $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\BarNode', $root->getNode(true)->getPrototype());
     }
 
     public function testAnExtendedNodeBuilderGetsPropagatedToTheChildren()
     {
-        $builder = new TreeBuilder();
+        $builder = new TreeBuilder('propagation');
 
-        $builder->root('propagation')
+        $builder->getRootNode()
             ->children()
                 ->setNodeClass('extended', 'Symfony\Component\Config\Definition\Builder\BooleanNodeDefinition')
                 ->node('foo', 'extended')->end()
@@ -99,9 +95,9 @@ public function testAnExtendedNodeBuilderGetsPropagatedToTheChildren()
 
     public function testDefinitionInfoGetsTransferredToNode()
     {
-        $builder = new TreeBuilder();
+        $builder = new TreeBuilder('test');
 
-        $builder->root('test')->info('root info')
+        $builder->getRootNode()->info('root info')
             ->children()
                 ->node('child', 'variable')->info('child info')->defaultValue('default')
             ->end()
@@ -116,9 +112,9 @@ public function testDefinitionInfoGetsTransferredToNode()
 
     public function testDefinitionExampleGetsTransferredToNode()
     {
-        $builder = new TreeBuilder();
+        $builder = new TreeBuilder('test');
 
-        $builder->root('test')
+        $builder->getRootNode()
             ->example(array('key' => 'value'))
             ->children()
                 ->node('child', 'variable')->info('child info')->defaultValue('default')->example('example')
@@ -134,9 +130,9 @@ public function testDefinitionExampleGetsTransferredToNode()
 
     public function testDefaultPathSeparatorIsDot()
     {
-        $builder = new TreeBuilder();
+        $builder = new TreeBuilder('propagation');
 
-        $builder->root('propagation')
+        $builder->getRootNode()
             ->children()
                 ->node('foo', 'variable')->end()
                 ->arrayNode('child')
@@ -164,9 +160,9 @@ public function testDefaultPathSeparatorIsDot()
 
     public function testPathSeparatorIsPropagatedToChildren()
     {
-        $builder = new TreeBuilder();
+        $builder = new TreeBuilder('propagation');
 
-        $builder->root('propagation')
+        $builder->getRootNode()
             ->children()
                 ->node('foo', 'variable')->end()
                 ->arrayNode('child')
@@ -192,4 +188,13 @@ public function testPathSeparatorIsPropagatedToChildren()
         $this->assertInstanceOf('Symfony\Component\Config\Definition\BaseNode', $childChildren['foo']);
         $this->assertSame('propagation/child/foo', $childChildren['foo']->getPath());
     }
+
+    /**
+     * @group legacy
+     * @expectedDeprecation A tree builder without a root node is deprecated since Symfony 4.2 and will not be supported anymore in 5.0.
+     */
+    public function testInitializingTreeBuildersWithoutRootNode()
+    {
+        new TreeBuilder();
+    }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/FinalizationTest.php b/src/Symfony/Component/Config/Tests/Definition/FinalizationTest.php
@@ -20,9 +20,9 @@ class FinalizationTest extends TestCase
 {
     public function testUnsetKeyWithDeepHierarchy()
     {
-        $tb = new TreeBuilder();
+        $tb = new TreeBuilder('config', 'array');
         $tree = $tb
-            ->root('config', 'array')
+            ->getRootNode()
                 ->children()
                     ->node('level1', 'array')
                         ->canBeUnset()
-Original file line number
+Diff line change
@@ Expand Up / @@ -6,6 +6,11 @@ Cache @@
      * Deprecated `CacheItem::getPreviousTags()`, use `CacheItem::getMetadata()` instead.
+    Config
+    ------
+     * Deprecated constructing a `TreeBuilder` without passing root node information.
     Security
     --------
@@ Expand Down @@