CodeExplorer

underscore example

// If class exists and implements ConfigBuilderInterface         if (class_exists($namespace) && is_subclass_of($namespace, ConfigBuilderInterface::class)) {
            return new $namespace();
        }

        // If it does not start with Symfony\Config\ we don't know how to handle this         if (!str_starts_with($namespace, 'Symfony\\Config\\')) {
            throw new InvalidArgumentException(sprintf('Could not find or generate class "%s".', $namespace));
        }

        // Try to get the extension alias         $alias = Container::underscore(substr($namespace, 15, -6));

        if (str_contains($alias, '\\')) {
            throw new InvalidArgumentException('You can only use "root" ConfigBuilders from "Symfony\\Config\\" namespace. Nested classes like "Symfony\\Config\\Framework\\CacheConfig" cannot be used.');
        }

        if (!$this->container->hasExtension($alias)) {
            $extensions = array_filter(array_map(fn (ExtensionInterface $ext) => $ext->getAlias(), $this->container->getExtensions()));
            throw new InvalidArgumentException(sprintf('There is no extension able to load the configuration for "%s". Looked for namespace "%s", found "%s".', $namespace, $alias, $extensions ? implode('", "', $extensions) : 'none'));
        }

        $extension = $this->container->getExtension($alias);

'foo_', 'Foo'],
            ['foo.', 'Foo_'],
            ['foo\bar', 'Foo_Bar'],
        ];
    }

    /** * @dataProvider dataForTestUnderscore */
    public function testUnderscore($id, $expected)
    {
        $this->assertEquals($expected, Container::underscore($id), sprintf('Container::underscore("%s")', $id));
    }

    public static function dataForTestUnderscore()
    {
        return [
            ['FooBar', 'foo_bar'],
            ['Foo_Bar', 'foo.bar'],
            ['Foo_BarBaz', 'foo.bar_baz'],
            ['FooBar_BazQux', 'foo_bar.baz_qux'],
            ['_Foo', '.foo'],
            ['Foo_', 'foo.'],
        ];

        if (null === $this->extension) {
            $extension = $this->createContainerExtension();

            if (null !== $extension) {
                if (!$extension instanceof ExtensionInterface) {
                    throw new \LogicException(sprintf('Extension "%s" must implement Symfony\Component\DependencyInjection\Extension\ExtensionInterface.', get_debug_type($extension)));
                }

                // check naming convention                 $basename = preg_replace('/Bundle$/', '', $this->getName());
                $expectedAlias = Container::underscore($basename);

                if ($expectedAlias != $extension->getAlias()) {
                    throw new \LogicException(sprintf('Users will expect the alias of the default extension of a bundle to be the underscored version of the bundle name ("%s"). You can override "Bundle::getContainerExtension()" if you want to use "%s" or another alias.', $expectedAlias, $extension->getAlias()));
                }

                $this->extension = $extension;
            } else {
                $this->extension = false;
            }
        }

public function prependExtension(ContainerConfigurator $container, ContainerBuilder $builder): void
    {
    }

    public function loadExtension(array $config, ContainerConfigurator $container, ContainerBuilder $builder): void
    {
    }

    public function getContainerExtension(): ?ExtensionInterface
    {
        if ('' === $this->extensionAlias) {
            $this->extensionAlias = Container::underscore(preg_replace('/Bundle$/', '', $this->getName()));
        }

        return $this->extension ??= new BundleExtension($this, $this->extensionAlias);
    }

    public function getPath(): string
    {
        if (null === $this->path) {
            $reflected = new \ReflectionObject($this);
            // assume the modern directory structure by default             $this->path = \dirname($reflected->getFileName(), 2);
        }

        if (!isset($this->extension)) {
            $extension = $this->createContainerExtension();

            if (null !== $extension) {
                if (!$extension instanceof ExtensionInterface) {
                    throw new \LogicException(sprintf('Extension "%s" must implement Symfony\Component\DependencyInjection\Extension\ExtensionInterface.', get_debug_type($extension)));
                }

                // check naming convention                 $basename = preg_replace('/Bundle$/', '', $this->getName());
                $expectedAlias = Container::underscore($basename);

                if ($expectedAlias != $extension->getAlias()) {
                    throw new \LogicException(sprintf('Users will expect the alias of the default extension of a bundle to be the underscored version of the bundle name ("%s"). You can override "Bundle::getContainerExtension()" if you want to use "%s" or another alias.', $expectedAlias, $extension->getAlias()));
                }

                $this->extension = $extension;
            } else {
                $this->extension = false;
            }
        }

    public function getAlias(): string
    {
        $className = static::class;
        if (!str_ends_with($className, 'Extension')) {
            throw new BadMethodCallException('This extension does not follow the naming convention; you must overwrite the getAlias() method.');
        }
        $classBaseName = substr(strrchr($className, '\\'), 1, -9);

        return Container::underscore($classBaseName);
    }

    /** * @return ConfigurationInterface|null */
    public function getConfiguration(array $config, ContainerBuilder $container)
    {
        $class = static::class;

        if (str_contains($class, "\0")) {
            return null; // ignore anonymous classes