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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;
- /**
- * 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 <jmikola@gmail.com>
- */
- class VariableNode extends BaseNode implements PrototypeNodeInterface
- {
- protected $defaultValueSet = false;
- protected $defaultValue;
- protected $allowEmptyValue = true;
- public function setDefaultValue($value)
- {
- $this->defaultValueSet = true;
- $this->defaultValue = $value;
- }
- /**
- * {@inheritdoc}
- */
- public function hasDefaultValue()
- {
- return $this->defaultValueSet;
- }
- /**
- * {@inheritdoc}
- */
- public function getDefaultValue()
- {
- $v = $this->defaultValue;
- return $v instanceof \Closure ? $v() : $v;
- }
- /**
- * Sets if this node is allowed to have an empty value.
- *
- * @param bool $boolean True if this entity will accept empty values
- */
- public function setAllowEmptyValue(bool $boolean)
- {
- $this->allowEmptyValue = $boolean;
- }
- /**
- * {@inheritdoc}
- */
- public function setName(string $name)
- {
- $this->name = $name;
- }
- /**
- * {@inheritdoc}
- */
- protected function validateType($value)
- {
- }
- /**
- * {@inheritdoc}
- */
- protected function finalizeValue($value)
- {
- // deny environment variables only when using custom validators
- // this avoids ever passing an empty value to final validation closures
- if (!$this->allowEmptyValue && $this->isHandlingPlaceholder() && $this->finalValidationClosures) {
- $e = new InvalidConfigurationException(sprintf('The path "%s" cannot contain an environment variable when empty values are not allowed by definition and are validated.', $this->getPath()));
- if ($hint = $this->getInfo()) {
- $e->addHint($hint);
- }
- $e->setPath($this->getPath());
- throw $e;
- }
- if (!$this->allowEmptyValue && $this->isValueEmpty($value)) {
- $ex = new InvalidConfigurationException(sprintf('The path "%s" cannot contain an empty value, but got %s.', $this->getPath(), json_encode($value)));
- if ($hint = $this->getInfo()) {
- $ex->addHint($hint);
- }
- $ex->setPath($this->getPath());
- throw $ex;
- }
- return $value;
- }
- /**
- * {@inheritdoc}
- */
- protected function normalizeValue($value)
- {
- return $value;
- }
- /**
- * {@inheritdoc}
- */
- protected function mergeValues($leftSide, $rightSide)
- {
- return $rightSide;
- }
- /**
- * Evaluates if the given value is to be treated as empty.
- *
- * By default, PHP's empty() function is used to test for emptiness. This
- * method may be overridden by subtypes to better match their understanding
- * of empty data.
- *
- * @param mixed $value
- *
- * @return bool
- *
- * @see finalizeValue()
- */
- protected function isValueEmpty($value)
- {
- return empty($value);
- }
- }
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