136 lines
2.9 KiB
PHP
136 lines
2.9 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Config\Definition;
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use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
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/**
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* This node represents a value of variable type in the config tree.
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*
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* This node is intended for values of arbitrary type.
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* Any PHP type is accepted as a value.
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*
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* @author Jeremy Mikola <jmikola@gmail.com>
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*/
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class VariableNode extends BaseNode implements PrototypeNodeInterface
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{
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protected $defaultValueSet = false;
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protected $defaultValue;
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protected $allowEmptyValue = true;
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/**
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* {@inheritdoc}
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*/
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public function setDefaultValue($value)
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{
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$this->defaultValueSet = true;
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$this->defaultValue = $value;
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}
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/**
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* {@inheritdoc}
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*/
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public function hasDefaultValue()
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{
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return $this->defaultValueSet;
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}
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/**
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* {@inheritdoc}
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*/
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public function getDefaultValue()
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{
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$v = $this->defaultValue;
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return $v instanceof \Closure ? $v() : $v;
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}
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/**
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* Sets if this node is allowed to have an empty value.
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*
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* @param bool $boolean True if this entity will accept empty values
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*/
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public function setAllowEmptyValue($boolean)
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{
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$this->allowEmptyValue = (bool) $boolean;
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}
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/**
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* {@inheritdoc}
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*/
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public function setName($name)
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{
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$this->name = $name;
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}
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/**
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* {@inheritdoc}
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*/
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protected function validateType($value)
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{
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}
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/**
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* {@inheritdoc}
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*/
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protected function finalizeValue($value)
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{
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if (!$this->allowEmptyValue && $this->isValueEmpty($value)) {
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$ex = new InvalidConfigurationException(sprintf(
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'The path "%s" cannot contain an empty value, but got %s.',
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$this->getPath(),
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json_encode($value)
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));
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if ($hint = $this->getInfo()) {
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$ex->addHint($hint);
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}
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$ex->setPath($this->getPath());
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throw $ex;
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}
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return $value;
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}
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/**
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* {@inheritdoc}
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*/
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protected function normalizeValue($value)
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{
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return $value;
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}
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/**
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* {@inheritdoc}
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*/
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protected function mergeValues($leftSide, $rightSide)
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{
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return $rightSide;
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}
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/**
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* Evaluates if the given value is to be treated as empty.
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*
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* By default, PHP's empty() function is used to test for emptiness. This
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* method may be overridden by subtypes to better match their understanding
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* of empty data.
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*
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* @param mixed $value
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*
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* @return bool
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*/
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protected function isValueEmpty($value)
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{
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return empty($value);
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}
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}
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