Repository: symfony/symfony
File: src/Symfony/Component/Form/EnumFormTypeGuesser.php (PHP)

Code before:
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Form;

use Symfony\Component\Form\Extension\Core\Type\EnumType as FormEnumType;
use Symfony\Component\Form\Guess\Guess;
use Symfony\Component\Form\Guess\TypeGuess;
use Symfony\Component\Form\Guess\ValueGuess;

final class EnumFormTypeGuesser implements FormTypeGuesserInterface
{
    private array $cache = [];

    public function guessType(string $class, string $property): ?TypeGuess
    {
        if (null === ($propertyType = $this->getPropertyType($class, $property))) {
            return null;
        }

        return new TypeGuess(FormEnumType::class, ['class' => $propertyType->getName()], Guess::HIGH_CONFIDENCE);
    }

    public function guessRequired(string $class, string $property): ?ValueGuess
    {
        if (null === $propertyType = $this->getPropertyType($class, $property)) {
            return null;
        }

        return new ValueGuess(!$propertyType->allowsNull(), Guess::HIGH_CONFIDENCE);
    }

    public function guessMaxLength(string $class, string $property): ?ValueGuess
    {
        return null;
    }

    public function guessPattern(string $class, string $property): ?ValueGuess
    {
        return null;
    }

    private function getPropertyType(string $class, string $property): ?\ReflectionNamedType
    {
        if (isset($this->cache[$class]) && \array_key_exists($property, $this->cache[$class])) {
            return $this->cache[$class][$property];
        }

        if (!isset($this->cache[$class])) {
            $this->cache[$class] = [];
        }

Review comment (suggestion):
```suggestion
        if (!$propertyType = $this->getPropertyType($class, $property)) {
```

Code after:
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Form;

use Symfony\Component\Form\Extension\Core\Type\EnumType;
use Symfony\Component\Form\Guess\Guess;
use Symfony\Component\Form\Guess\TypeGuess;
use Symfony\Component\Form\Guess\ValueGuess;

final class EnumFormTypeGuesser implements FormTypeGuesserInterface
{
    /**
     * @var array<string, array<string, string|false>>
     */
    private array $cache = [];

    public function guessType(string $class, string $property): ?TypeGuess
    {
        if (!($enum = $this->getPropertyType($class, $property))) {
            return null;
        }

        return new TypeGuess(EnumType::class, ['class' => ltrim($enum, '?')], Guess::HIGH_CONFIDENCE);
    }

    public function guessRequired(string $class, string $property): ?ValueGuess
    {
        if (!($enum = $this->getPropertyType($class, $property))) {
            return null;
        }

        return new ValueGuess('?' !== $enum[0], Guess::HIGH_CONFIDENCE);
    }

    public function guessMaxLength(string $class, string $property): ?ValueGuess
    {
        return null;
    }

    public function guessPattern(string $class, string $property): ?ValueGuess
    {
        return null;
    }

    private function getPropertyType(string $class, string $property): string|false
    {
        if (isset($this->cache[$class][$property])) {
            return $this->cache[$class][$property];
        }