TreeBuilder example

    public function __construct(bool $debug)
    {
        $this->debug = $debug;
    }

    /** * Generates the configuration tree builder. */
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('framework');
        $rootNode = $treeBuilder->getRootNode();

        $rootNode
            ->beforeNormalization()
                ->ifTrue(fn ($v) => !isset($v['assets']) && isset($v['templating']) && class_exists(Package::class))
                ->then(function D$v) {
                    $v['assets'] = [];

                    return $v;
                })
            ->end()
            

namespace Symfony\Component\Config\Tests\Builder\Fixtures;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class Placeholders implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('placeholders');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->booleanNode('enabled')->defaultFalse()->end()
                ->floatNode('favorite_float')->end()
                ->arrayNode('good_integers')
                    ->integerPrototype()->end()
                ->end()
            ->end()
        ;

        

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class Configuration implements ConfigurationInterface
{
    public function __construct($required)
    {
    }

    public function getConfigTreeBuilder(): TreeBuilder
    {
        return new TreeBuilder('root');
    }
}

<?php
namespace Symfony\Component\DependencyInjection\Tests\Fixtures\Extension\ValidConfig;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class Configuration implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        return new TreeBuilder('root');
    }
}

class Configuration implements ConfigurationInterface
{
    private ?CustomConfig $customConfig;

    public function __construct(CustomConfig $customConfig = null)
    {
        $this->customConfig = $customConfig;
    }

    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('test');

        $this->customConfig?->addConfiguration($treeBuilder->getRootNode());

        return $treeBuilder;
    }
}

class Configuration implements ConfigurationInterface
{
    /** * Generates the configuration tree builder. */
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('web_profiler');

        $treeBuilder->getRootNode()
            ->children()
                ->booleanNode('toolbar')->defaultFalse()->end()
                ->booleanNode('intercept_redirects')->defaultFalse()->end()
                ->scalarNode('excluded_ajax_paths')->defaultValue('^/((index|app(_[\w]+)?)\.php/)?_wdt')->end()
            ->end()
        ;

        return $treeBuilder;
    }
}

use PHPUnit\Framework\TestCase;
use Symfony\Component\Config\Definition\BaseNode;
use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\Loader\DefinitionFileLoader;
use Symfony\Component\Config\FileLocator;

class DefinitionFileLoaderTest extends TestCase
{
    public function testSupports()
    {
        $loader = new DefinitionFileLoader(new TreeBuilder('test'), new FileLocator());

        $this->assertTrue($loader->supports('foo.php'), '->supports() returns true if the resource is loadable');
        $this->assertFalse($loader->supports('foo.foo'), '->supports() returns false if the resource is not loadable');
        $this->assertTrue($loader->supports('with_wrong_ext.yml', 'php'), '->supports() returns true if the resource with forced type is loadable');
    }

    public function testLoad()
    {
        $loader = new DefinitionFileLoader($treeBuilder = new TreeBuilder('test'), new FileLocator());
        $loader->load(__DIR__.'/../../Fixtures/Loader/node_simple.php');

        

namespace Symfony\Component\Config\Tests\Builder\Fixtures;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class NodeInitialValues implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('node_initial_values');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('some_clever_name')
                    ->children()
                        ->scalarNode('first')->end()
                        ->scalarNode('second')->end()
                        ->scalarNode('third')->end()
                    ->end()
                ->end()

                

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Config\Definition\NodeInterface;

class NormalizationTest extends TestCase
{
    /** * @dataProvider getEncoderTests */
    public function testNormalizeEncoders($denormalized)
    {
        $tb = new TreeBuilder('root_name', 'array');
        $tree = $tb
            ->getRootNode()
                ->fixXmlConfig('encoder')
                ->children()
                    ->node('encoders', 'array')
                        ->useAttributeAsKey('class')
                        ->prototype('array')
                            ->beforeNormalization()->ifString()->then(fn ($v) => ['algorithm' => $v])->end()
                            ->children()
                                ->node('algorithm', 'scalar')->end()
                            ->end()
                        

namespace Symfony\Component\Config\Tests\Fixtures\Configuration;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;
use Symfony\Component\Config\Tests\Fixtures\TestEnum;

class ExampleConfiguration implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('acme_root');

        $treeBuilder->getRootNode()
            ->fixXmlConfig('parameter')
            ->fixXmlConfig('connection')
            ->fixXmlConfig('cms_page')
            ->children()
                ->booleanNode('boolean')->defaultTrue()->end()
                ->scalarNode('scalar_empty')->end()
                ->scalarNode('scalar_null')->defaultNull()->end()
                ->scalarNode('scalar_true')->defaultTrue()->end()
                ->scalarNode('scalar_false')->defaultFalse()->end()
                

namespace Symfony\Component\Config\Tests\Builder\Fixtures;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;
use Symfony\Component\Config\Tests\Fixtures\TestEnum;

class PrimitiveTypes implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('primitive_types');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->booleanNode('boolean_node')->end()
                ->enumNode('enum_node')->values(['foo', 'bar', 'baz', TestEnum::Bar])->end()
                ->floatNode('float_node')->end()
                ->integerNode('integer_node')->end()
                ->scalarNode('scalar_node')->end()
                ->scalarNode('scalar_node_with_default')->defaultTrue()->end()
            ->end()
        ;

        

namespace Symfony\Component\Config\Tests\Builder\Fixtures;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class ArrayExtraKeys implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('array_extra_keys');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('foo')
                    ->ignoreExtraKeys(false)
                    ->children()
                        ->scalarNode('baz')->end()
                        ->scalarNode('qux')->end()
                    ->end()
                ->end()
                ->arrayNode('bar')
                    

class Configuration implements ConfigurationInterface
{
    /** * Generates the configuration tree builder. */
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('twig');
        $rootNode = $treeBuilder->getRootNode();

        $rootNode->beforeNormalization()
            ->ifTrue(fn ($v) => \is_array($v) && \array_key_exists('exception_controller', $v))
            ->then(function D$v) {
                if (isset($v['exception_controller'])) {
                    throw new InvalidConfigurationException('Option "exception_controller" under "twig" must be null or unset, use "error_controller" under "framework" instead.');
                }

                unset($v['exception_controller']);

                

namespace Symfony\Component\Config\Tests\Builder\Fixtures;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class ScalarNormalizedTypes implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('scalar_normalized_types');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('simple_array')
                    ->beforeNormalization()->ifString()->then(fn ($v) => [$v])->end()
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('keyed_array')
                    ->useAttributeAsKey('name')
                    ->prototype('array')
                        ->beforeNormalization()
                            

public function __construct(array $factories, array $userProviderFactories)
    {
        $this->factories = $factories;
        $this->userProviderFactories = $userProviderFactories;
    }

    /** * Generates the configuration tree builder. */
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('security');
        $rootNode = $tb->getRootNode();

        $rootNode
            ->children()
                ->scalarNode('access_denied_url')->defaultNull()->example('/foo/error403')->end()
                ->enumNode('session_fixation_strategy')
                    ->values([SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE])
                    ->defaultValue(SessionAuthenticationStrategy::MIGRATE)
                ->end()
                ->booleanNode('hide_user_not_found')->defaultTrue()->end()
                ->booleanNode('erase_credentials')->defaultTrue()->end()