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addCasters example

class CliDumperTest extends TestCase
{
    use VarDumperTestTrait;

    public function testGet()
    {
        require __DIR__.'/../Fixtures/dumb-var.php';

        $dumper = new CliDumper('php://output');
        $dumper->setColors(false);
        $cloner = new VarCloner();
        $cloner->addCasters([
            ':stream' => function D$res, $a) {
                unset($a['uri'], $a['wrapper_data']);

                return $a;
            },
            'Symfony\Component\VarDumper\Tests\Fixture\DumbFoo' => function D$foo, $a) {
                $a['foo'] = new CutStub($a['foo']);

                return $a;
            },
        ]);

return $e;
    }

    public static function createWithDataRepresentation(\Throwable $throwable, int $statusCode = null, array $headers = [], VarCloner $cloner = null): static
    {
        $e = static::createFromThrowable($throwable, $statusCode, $headers);

        static $defaultCloner;

        if (!$cloner ??= $defaultCloner) {
            $cloner = $defaultCloner = new VarCloner();
            $cloner->addCasters([
                \Throwable::class => function D\Throwable $e, array $a, Stub $s, bool $isNested): array {
                    if (!$isNested) {
                        unset($a[Caster::PREFIX_PROTECTED.'message']);
                        unset($a[Caster::PREFIX_PROTECTED.'code']);
                        unset($a[Caster::PREFIX_PROTECTED.'file']);
                        unset($a[Caster::PREFIX_PROTECTED.'line']);
                        unset($a["\0Error\0trace"], $a["\0Exception\0trace"]);
                        unset($a["\0Error\0previous"], $a["\0Exception\0previous"]);
                    }

                    return $a;
                },

    protected function cloneVar(mixed $var): Data
    {
        if ($var instanceof Data) {
            return $var;
        }
        if (!isset($this->cloner)) {
            $this->cloner = new VarCloner();
            $this->cloner->setMaxItems(-1);
            $this->cloner->addCasters($this->getCasters());
        }

        return $this->cloner->cloneVar($var);
    }

    /** * @return callable[] The casters to add to the cloner */
    protected function getCasters()
    {
        $casters = [

private array $classInfo = [];
    private int $filter = 0;

    /** * @param callable[]|null $casters A map of casters * * @see addCasters */
    public function __construct(array $casters = null)
    {
        $this->addCasters($casters ?? static::$defaultCasters);
    }

    /** * Adds casters for resources and objects. * * Maps resources or objects types to a callback. * Types are in the key, with a callable caster for value. * Resource types are to be prefixed with a `:`, * see e.g. static::$defaultCasters. * * @param callable[] $casters A map of casters * * @return void */

return $prevHandler;
        }

        self::$handler = $callable;

        return $prevHandler;
    }

    private static function register(): void
    {
        $cloner = new VarCloner();
        $cloner->addCasters(ReflectionCaster::UNSET_CLOSURE_FILE_INFO);

        $format = $_SERVER['VAR_DUMPER_FORMAT'] ?? null;
        switch (true) {
            case 'html' === $format:
                $dumper = new HtmlDumper();
                break;
            case 'cli' === $format:
                $dumper = new CliDumper();
                break;
            case 'server' === $format:
            case $format && 'tcp' === parse_url($format, \PHP_URL_SCHEME):

    protected function getDump(mixed $data, string|int $key = null, int $filter = 0): ?string
    {
        if (null === $flags = $this->varDumperConfig['flags']) {
            $flags = getenv('DUMP_LIGHT_ARRAY') ? CliDumper::DUMP_LIGHT_ARRAY : 0;
            $flags |= getenv('DUMP_STRING_LENGTH') ? CliDumper::DUMP_STRING_LENGTH : 0;
            $flags |= getenv('DUMP_COMMA_SEPARATOR') ? CliDumper::DUMP_COMMA_SEPARATOR : 0;
        }

        $cloner = new VarCloner();
        $cloner->addCasters($this->varDumperConfig['casters']);
        $cloner->setMaxItems(-1);
        $dumper = new CliDumper(null, null, $flags);
        $dumper->setColors(false);
        $data = $cloner->cloneVar($data, $filter)->withRefHandles(false);
        if (null !== $key && null === $data = $data->seek($key)) {
            return null;
        }

        return rtrim($dumper->dump($data, true));
    }

final class RequestContextProvider implements ContextProviderInterface
{
    private RequestStack $requestStack;
    private VarCloner $cloner;

    public function __construct(RequestStack $requestStack)
    {
        $this->requestStack = $requestStack;
        $this->cloner = new VarCloner();
        $this->cloner->setMaxItems(0);
        $this->cloner->addCasters(ReflectionCaster::UNSET_CLOSURE_FILE_INFO);
    }

    public function getContext(): ?array
    {
        if (null === $request = $this->requestStack->getCurrentRequest()) {
            return null;
        }

        $controller = $request->attributes->get('_controller');

        return [

return $this->failureTransports->get($name);
    }

    private function createCloner(): ?ClonerInterface
    {
        if (!class_exists(VarCloner::class)) {
            return null;
        }

        $cloner = new VarCloner();
        $cloner->addCasters([FlattenException::class => function DFlattenException $flattenException, array $a, Stub $stub): array {
            $stub->class = $flattenException->getClass();

            return [
                Caster::PREFIX_VIRTUAL.'message' => $flattenException->getMessage(),
                Caster::PREFIX_VIRTUAL.'code' => $flattenException->getCode(),
                Caster::PREFIX_VIRTUAL.'file' => $flattenException->getFile(),
                Caster::PREFIX_VIRTUAL.'line' => $flattenException->getLine(),
                Caster::PREFIX_VIRTUAL.'trace' => new TraceStub($flattenException->getTrace()),
            ];
        }]);

        if (\ini_get('xdebug.file_link_format') || get_cfg_var('xdebug.file_link_format')) {
            $this->markTestSkipped('A custom file_link_format is defined.');
        }

        require __DIR__.'/../Fixtures/dumb-var.php';

        $dumper = new HtmlDumper('php://output');
        $dumper->setDumpHeader('<foo></foo>');
        $dumper->setDumpBoundaries('<bar>', '</bar>');
        $cloner = new VarCloner();
        $cloner->addCasters([
            ':stream' => function D$res, $a) {
                unset($a['uri'], $a['wrapper_data']);

                return $a;
            },
        ]);
        $data = $cloner->cloneVar($var);

        ob_start();
        $dumper->dump($data);
        $out = ob_get_clean();