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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* 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;
/**
* Node which only allows a finite set of values.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
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)) {
$ex = new InvalidConfigurationException(sprintf(
'The value %s is not allowed for path "%s". Permissible values: %s',
json_encode($value),
$this->getPath(),
implode(', ', array_map('json_encode', $this->values))));
$ex->setPath($this->getPath());
throw $ex;
}
return $value;
}
}
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