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executable file 51 lines (40 sloc) 1.369 kb
namespace Symfony\Component\Config\Definition;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Config\Definition\ScalarNode;
* Node which only allows a finite set of values.
* @author Johannes M. Schmitt <>
class EnumNode extends ScalarNode
private $values;
public function __construct($name, NodeInterface $parent = null, array $values = array())
$values = array_unique($values);
if (count($values) <= 1) {
throw new \InvalidArgumentException('$values must contain at least two distinct elements.');
parent::__construct($name, $parent);
$this->values = $values;
public function getValues()
return $this->values;
protected function finalizeValue($value)
$value = parent::finalizeValue($value);
if (!in_array($value, $this->values, true)) {
$ex = new InvalidConfigurationException(sprintf(
'The value %s is not allowed for path "%s". Permissible values: %s',
implode(', ', array_map('json_encode', $this->values))));
throw $ex;
return $value;
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