* * 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\InvalidConfigurationException; /** * This node represents a value of variable type in the config tree. * * This node is intended for values of arbitrary type. * Any PHP type is accepted as a value. * * @author Jeremy Mikola */ class VariableNode extends BaseNode implements PrototypeNodeInterface { protected $defaultValueSet = false; protected $defaultValue; protected $allowEmptyValue = true; /** * {@inheritDoc} */ public function setDefaultValue($value) { $this->defaultValueSet = true; $this->defaultValue = $value; } /** * {@inheritDoc} */ public function hasDefaultValue() { return $this->defaultValueSet; } /** * {@inheritDoc} */ public function getDefaultValue() { return $this->defaultValue instanceof \Closure ? call_user_func($this->defaultValue) : $this->defaultValue; } /** * Sets if this node is allowed to have an empty value. * * @param Boolean $boolean True if this entity will accept empty values. */ public function setAllowEmptyValue($boolean) { $this->allowEmptyValue = (Boolean) $boolean; } /** * {@inheritDoc} */ public function setName($name) { $this->name = $name; } /** * {@inheritDoc} */ protected function validateType($value) { } /** * {@inheritDoc} */ protected function finalizeValue($value) { if (!$this->allowEmptyValue && empty($value)) { $ex = new InvalidConfigurationException(sprintf( 'The path "%s" cannot contain an empty value, but got %s.', $this->getPath(), json_encode($value) )); $ex->setPath($this->getPath()); throw $ex; } return $value; } /** * {@inheritDoc} */ protected function normalizeValue($value) { return $value; } /** * {@inheritDoc} */ protected function mergeValues($leftSide, $rightSide) { return $rightSide; } }