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File Content: `VariableNode.php`

<?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);
    }
}

Name	Size	Permission
Builder	---	0755
Dumper	---	0755
Exception	---	0755
ArrayNode.php	11892 bytes	0644
BaseNode.php	16402 bytes	0644
BooleanNode.php	1272 bytes	0644
ConfigurationInterface.php	613 bytes	0644
EnumNode.php	1705 bytes	0644
FloatNode.php	1250 bytes	0644
IntegerNode.php	1113 bytes	0644
NodeInterface.php	2390 bytes	0644
NumericNode.php	1908 bytes	0644
Processor.php	2577 bytes	0644
PrototypeNodeInterface.php	583 bytes	0644
PrototypedArrayNode.php	11330 bytes	0644
ScalarNode.php	1689 bytes	0644
VariableNode.php	3547 bytes	0644

File Content: VariableNode.php

File Content: `VariableNode.php`