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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <[email protected]> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Config\Definition; use Symfony\Component\Config\Definition\Exception\InvalidTypeException; /** * This node represents a scalar value in the config tree. * * The following values are considered scalars: * * booleans * * strings * * null * * integers * * floats * * @author Johannes M. Schmitt <[email protected]> */ class ScalarNode extends VariableNode { /** * {@inheritdoc} */ protected function validateType($value) { if (!is_scalar($value) && null !== $value) { $ex = new InvalidTypeException(sprintf('Invalid type for path "%s". Expected scalar, but got %s.', $this->getPath(), \gettype($value))); if ($hint = $this->getInfo()) { $ex->addHint($hint); } $ex->setPath($this->getPath()); throw $ex; } } /** * {@inheritdoc} */ protected function isValueEmpty($value) { // assume environment variables are never empty (which in practice is likely to be true during runtime) // not doing so breaks many configs that are valid today if ($this->isHandlingPlaceholder()) { return false; } return null === $value || '' === $value; } /** * {@inheritdoc} */ protected function getValidPlaceholderTypes(): array { return ['bool', 'int', 'float', 'string']; } }