Viewing file:  VariableNode.php (3.46 KB) -rw-r--r--
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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\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 <[email protected]>
*/
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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