544 lines
14 KiB
PHP
544 lines
14 KiB
PHP
<?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\Exception;
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use Symfony\Component\Config\Definition\Exception\ForbiddenOverwriteException;
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use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
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use Symfony\Component\Config\Definition\Exception\InvalidTypeException;
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use Symfony\Component\Config\Definition\Exception\UnsetKeyException;
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/**
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* The base node class.
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*
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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*/
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abstract class BaseNode implements NodeInterface
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{
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const DEFAULT_PATH_SEPARATOR = '.';
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private static $placeholderUniquePrefix;
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private static $placeholders = [];
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protected $name;
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protected $parent;
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protected $normalizationClosures = [];
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protected $finalValidationClosures = [];
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protected $allowOverwrite = true;
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protected $required = false;
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protected $deprecationMessage = null;
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protected $equivalentValues = [];
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protected $attributes = [];
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protected $pathSeparator;
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private $handlingPlaceholder;
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/**
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* @throws \InvalidArgumentException if the name contains a period
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*/
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public function __construct(?string $name, NodeInterface $parent = null, string $pathSeparator = self::DEFAULT_PATH_SEPARATOR)
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{
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if (null === $name) {
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$name = '';
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}
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if (false !== strpos($name, $pathSeparator)) {
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throw new \InvalidArgumentException('The name must not contain "'.$pathSeparator.'".');
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}
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$this->name = $name;
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$this->parent = $parent;
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$this->pathSeparator = $pathSeparator;
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}
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/**
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* Register possible (dummy) values for a dynamic placeholder value.
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*
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* Matching configuration values will be processed with a provided value, one by one. After a provided value is
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* successfully processed the configuration value is returned as is, thus preserving the placeholder.
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*
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* @internal
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*/
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public static function setPlaceholder(string $placeholder, array $values): void
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{
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if (!$values) {
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throw new \InvalidArgumentException('At least one value must be provided.');
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}
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self::$placeholders[$placeholder] = $values;
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}
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/**
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* Sets a common prefix for dynamic placeholder values.
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*
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* Matching configuration values will be skipped from being processed and are returned as is, thus preserving the
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* placeholder. An exact match provided by {@see setPlaceholder()} might take precedence.
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*
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* @internal
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*/
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public static function setPlaceholderUniquePrefix(string $prefix): void
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{
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self::$placeholderUniquePrefix = $prefix;
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}
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/**
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* Resets all current placeholders available.
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*
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* @internal
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*/
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public static function resetPlaceholders(): void
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{
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self::$placeholderUniquePrefix = null;
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self::$placeholders = [];
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}
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public function setAttribute($key, $value)
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{
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$this->attributes[$key] = $value;
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}
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public function getAttribute($key, $default = null)
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{
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return isset($this->attributes[$key]) ? $this->attributes[$key] : $default;
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}
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public function hasAttribute($key)
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{
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return isset($this->attributes[$key]);
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}
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public function getAttributes()
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{
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return $this->attributes;
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}
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public function setAttributes(array $attributes)
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{
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$this->attributes = $attributes;
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}
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public function removeAttribute($key)
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{
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unset($this->attributes[$key]);
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}
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/**
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* Sets an info message.
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*
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* @param string $info
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*/
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public function setInfo($info)
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{
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$this->setAttribute('info', $info);
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}
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/**
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* Returns info message.
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*
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* @return string The info text
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*/
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public function getInfo()
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{
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return $this->getAttribute('info');
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}
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/**
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* Sets the example configuration for this node.
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*
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* @param string|array $example
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*/
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public function setExample($example)
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{
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$this->setAttribute('example', $example);
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}
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/**
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* Retrieves the example configuration for this node.
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*
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* @return string|array The example
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*/
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public function getExample()
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{
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return $this->getAttribute('example');
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}
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/**
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* Adds an equivalent value.
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*
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* @param mixed $originalValue
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* @param mixed $equivalentValue
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*/
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public function addEquivalentValue($originalValue, $equivalentValue)
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{
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$this->equivalentValues[] = [$originalValue, $equivalentValue];
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}
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/**
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* Set this node as required.
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*
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* @param bool $boolean Required node
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*/
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public function setRequired($boolean)
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{
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$this->required = (bool) $boolean;
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}
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/**
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* Sets this node as deprecated.
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*
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* You can use %node% and %path% placeholders in your message to display,
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* respectively, the node name and its complete path.
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*
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* @param string|null $message Deprecated message
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*/
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public function setDeprecated($message)
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{
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$this->deprecationMessage = $message;
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}
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/**
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* Sets if this node can be overridden.
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*
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* @param bool $allow
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*/
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public function setAllowOverwrite($allow)
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{
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$this->allowOverwrite = (bool) $allow;
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}
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/**
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* Sets the closures used for normalization.
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*
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* @param \Closure[] $closures An array of Closures used for normalization
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*/
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public function setNormalizationClosures(array $closures)
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{
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$this->normalizationClosures = $closures;
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}
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/**
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* Sets the closures used for final validation.
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*
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* @param \Closure[] $closures An array of Closures used for final validation
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*/
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public function setFinalValidationClosures(array $closures)
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{
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$this->finalValidationClosures = $closures;
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}
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/**
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* {@inheritdoc}
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*/
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public function isRequired()
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{
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return $this->required;
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}
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/**
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* Checks if this node is deprecated.
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*
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* @return bool
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*/
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public function isDeprecated()
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{
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return null !== $this->deprecationMessage;
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}
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/**
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* Returns the deprecated message.
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*
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* @param string $node the configuration node name
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* @param string $path the path of the node
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*
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* @return string
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*/
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public function getDeprecationMessage($node, $path)
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{
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return strtr($this->deprecationMessage, ['%node%' => $node, '%path%' => $path]);
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}
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/**
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* {@inheritdoc}
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*/
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public function getName()
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{
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return $this->name;
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}
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/**
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* {@inheritdoc}
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*/
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public function getPath()
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{
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if (null !== $this->parent) {
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return $this->parent->getPath().$this->pathSeparator.$this->name;
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}
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return $this->name;
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}
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/**
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* {@inheritdoc}
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*/
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final public function merge($leftSide, $rightSide)
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{
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if (!$this->allowOverwrite) {
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throw new ForbiddenOverwriteException(sprintf('Configuration path "%s" cannot be overwritten. You have to define all options for this path, and any of its sub-paths in one configuration section.', $this->getPath()));
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}
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if ($leftSide !== $leftPlaceholders = self::resolvePlaceholderValue($leftSide)) {
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foreach ($leftPlaceholders as $leftPlaceholder) {
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$this->handlingPlaceholder = $leftSide;
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try {
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$this->merge($leftPlaceholder, $rightSide);
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} finally {
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$this->handlingPlaceholder = null;
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}
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}
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return $rightSide;
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}
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if ($rightSide !== $rightPlaceholders = self::resolvePlaceholderValue($rightSide)) {
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foreach ($rightPlaceholders as $rightPlaceholder) {
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$this->handlingPlaceholder = $rightSide;
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try {
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$this->merge($leftSide, $rightPlaceholder);
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} finally {
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$this->handlingPlaceholder = null;
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}
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}
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return $rightSide;
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}
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$this->doValidateType($leftSide);
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$this->doValidateType($rightSide);
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return $this->mergeValues($leftSide, $rightSide);
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}
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/**
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* {@inheritdoc}
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*/
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final public function normalize($value)
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{
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$value = $this->preNormalize($value);
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// run custom normalization closures
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foreach ($this->normalizationClosures as $closure) {
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$value = $closure($value);
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}
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// resolve placeholder value
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if ($value !== $placeholders = self::resolvePlaceholderValue($value)) {
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foreach ($placeholders as $placeholder) {
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$this->handlingPlaceholder = $value;
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try {
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$this->normalize($placeholder);
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} finally {
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$this->handlingPlaceholder = null;
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}
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}
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return $value;
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}
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// replace value with their equivalent
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foreach ($this->equivalentValues as $data) {
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if ($data[0] === $value) {
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$value = $data[1];
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}
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}
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// validate type
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$this->doValidateType($value);
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// normalize value
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return $this->normalizeValue($value);
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}
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/**
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* Normalizes the value before any other normalization is applied.
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*
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* @param $value
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*
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* @return The normalized array value
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*/
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protected function preNormalize($value)
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{
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return $value;
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}
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/**
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* Returns parent node for this node.
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*
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* @return NodeInterface|null
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*/
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public function getParent()
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{
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return $this->parent;
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}
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/**
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* {@inheritdoc}
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*/
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final public function finalize($value)
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{
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if ($value !== $placeholders = self::resolvePlaceholderValue($value)) {
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foreach ($placeholders as $placeholder) {
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$this->handlingPlaceholder = $value;
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try {
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$this->finalize($placeholder);
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} finally {
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$this->handlingPlaceholder = null;
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}
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}
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return $value;
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}
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$this->doValidateType($value);
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$value = $this->finalizeValue($value);
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// Perform validation on the final value if a closure has been set.
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// The closure is also allowed to return another value.
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foreach ($this->finalValidationClosures as $closure) {
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try {
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$value = $closure($value);
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} catch (Exception $e) {
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if ($e instanceof UnsetKeyException && null !== $this->handlingPlaceholder) {
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continue;
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}
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throw $e;
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} catch (\Exception $e) {
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throw new InvalidConfigurationException(sprintf('Invalid configuration for path "%s": %s', $this->getPath(), $e->getMessage()), $e->getCode(), $e);
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}
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}
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return $value;
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}
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/**
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* Validates the type of a Node.
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*
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* @param mixed $value The value to validate
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*
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* @throws InvalidTypeException when the value is invalid
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*/
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abstract protected function validateType($value);
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/**
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* Normalizes the value.
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*
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* @param mixed $value The value to normalize
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*
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* @return mixed The normalized value
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*/
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abstract protected function normalizeValue($value);
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/**
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* Merges two values together.
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*
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* @param mixed $leftSide
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* @param mixed $rightSide
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*
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* @return mixed The merged value
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*/
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abstract protected function mergeValues($leftSide, $rightSide);
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/**
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* Finalizes a value.
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*
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* @param mixed $value The value to finalize
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*
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* @return mixed The finalized value
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*/
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abstract protected function finalizeValue($value);
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/**
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* Tests if placeholder values are allowed for this node.
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*/
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protected function allowPlaceholders(): bool
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{
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return true;
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}
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/**
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* Tests if a placeholder is being handled currently.
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*/
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protected function isHandlingPlaceholder(): bool
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{
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return null !== $this->handlingPlaceholder;
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}
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/**
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* Gets allowed dynamic types for this node.
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*/
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protected function getValidPlaceholderTypes(): array
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{
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return [];
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}
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private static function resolvePlaceholderValue($value)
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{
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if (\is_string($value)) {
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if (isset(self::$placeholders[$value])) {
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return self::$placeholders[$value];
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}
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if (self::$placeholderUniquePrefix && 0 === strpos($value, self::$placeholderUniquePrefix)) {
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return [];
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}
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}
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return $value;
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}
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private function doValidateType($value): void
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{
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if (null !== $this->handlingPlaceholder && !$this->allowPlaceholders()) {
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$e = new InvalidTypeException(sprintf('A dynamic value is not compatible with a "%s" node type at path "%s".', \get_class($this), $this->getPath()));
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$e->setPath($this->getPath());
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throw $e;
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}
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if (null === $this->handlingPlaceholder || null === $value) {
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$this->validateType($value);
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return;
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}
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$knownTypes = array_keys(self::$placeholders[$this->handlingPlaceholder]);
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$validTypes = $this->getValidPlaceholderTypes();
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if ($validTypes && array_diff($knownTypes, $validTypes)) {
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$e = new InvalidTypeException(sprintf(
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'Invalid type for path "%s". Expected %s, but got %s.',
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$this->getPath(),
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1 === \count($validTypes) ? '"'.reset($validTypes).'"' : 'one of "'.implode('", "', $validTypes).'"',
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1 === \count($knownTypes) ? '"'.reset($knownTypes).'"' : 'one of "'.implode('", "', $knownTypes).'"'
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));
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if ($hint = $this->getInfo()) {
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$e->addHint($hint);
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}
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$e->setPath($this->getPath());
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throw $e;
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}
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$this->validateType($value);
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}
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}
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