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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\Exception;
use Symfony\Component\Config\Definition\Exception\ForbiddenOverwriteException;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Config\Definition\Exception\InvalidTypeException;
use Symfony\Component\Config\Definition\Exception\UnsetKeyException;
/**
* The base node class.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
abstract class BaseNode implements NodeInterface
{
public const DEFAULT_PATH_SEPARATOR = '.';
private static $placeholderUniquePrefixes = [];
private static $placeholders = [];
protected $name;
protected $parent;
protected $normalizationClosures = [];
protected $finalValidationClosures = [];
protected $allowOverwrite = true;
protected $required = false;
protected $deprecation = [];
protected $equivalentValues = [];
protected $attributes = [];
protected $pathSeparator;
private $handlingPlaceholder;
/**
* @throws \InvalidArgumentException if the name contains a period
*/
public function __construct(?string $name, NodeInterface $parent = null, string $pathSeparator = self::DEFAULT_PATH_SEPARATOR)
{
if (str_contains($name = (string) $name, $pathSeparator)) {
throw new \InvalidArgumentException('The name must not contain ".'.$pathSeparator.'".');
}
$this->name = $name;
$this->parent = $parent;
$this->pathSeparator = $pathSeparator;
}
/**
* Register possible (dummy) values for a dynamic placeholder value.
*
* Matching configuration values will be processed with a provided value, one by one. After a provided value is
* successfully processed the configuration value is returned as is, thus preserving the placeholder.
*
* @internal
*/
public static function setPlaceholder(string $placeholder, array $values): void
{
if (!$values) {
throw new \InvalidArgumentException('At least one value must be provided.');
}
self::$placeholders[$placeholder] = $values;
}
/**
* Adds a common prefix for dynamic placeholder values.
*
* Matching configuration values will be skipped from being processed and are returned as is, thus preserving the
* placeholder. An exact match provided by {@see setPlaceholder()} might take precedence.
*
* @internal
*/
public static function setPlaceholderUniquePrefix(string $prefix): void
{
self::$placeholderUniquePrefixes[] = $prefix;
}
/**
* Resets all current placeholders available.
*
* @internal
*/
public static function resetPlaceholders(): void
{
self::$placeholderUniquePrefixes = [];
self::$placeholders = [];
}
public function setAttribute(string $key, $value)
{
$this->attributes[$key] = $value;
}
/**
* @return mixed
*/
public function getAttribute(string $key, $default = null)
{
return $this->attributes[$key] ?? $default;
}
/**
* @return bool
*/
public function hasAttribute(string $key)
{
return isset($this->attributes[$key]);
}
/**
* @return array
*/
public function getAttributes()
{
return $this->attributes;
}
public function setAttributes(array $attributes)
{
$this->attributes = $attributes;
}
public function removeAttribute(string $key)
{
unset($this->attributes[$key]);
}
/**
* Sets an info message.
*/
public function setInfo(string $info)
{
$this->setAttribute('info', $info);
}
/**
* Returns info message.
*
* @return string|null
*/
public function getInfo()
{
return $this->getAttribute('info');
}
/**
* Sets the example configuration for this node.
*
* @param string|array $example
*/
public function setExample($example)
{
$this->setAttribute('example', $example);
}
/**
* Retrieves the example configuration for this node.
*
* @return string|array|null
*/
public function getExample()
{
return $this->getAttribute('example');
}
/**
* Adds an equivalent value.
*
* @param mixed $originalValue
* @param mixed $equivalentValue
*/
public function addEquivalentValue($originalValue, $equivalentValue)
{
$this->equivalentValues[] = [$originalValue, $equivalentValue];
}
/**
* Set this node as required.
*/
public function setRequired(bool $boolean)
{
$this->required = $boolean;
}
/**
* Sets this node as deprecated.
*
* @param string $package The name of the composer package that is triggering the deprecation
* @param string $version The version of the package that introduced the deprecation
* @param string $message the deprecation message to use
*
* You can use %node% and %path% placeholders in your message to display,
* respectively, the node name and its complete path
*/
public function setDeprecated(?string $package/*, string $version, string $message = 'The child node "%node%" at path "%path%" is deprecated.' */)
{
$args = \func_get_args();
if (\func_num_args() < 2) {
trigger_deprecation('symfony/config', '5.1', 'The signature of method "%s()" requires 3 arguments: "string $package, string $version, string $message", not defining them is deprecated.', __METHOD__);
if (!isset($args[0])) {
trigger_deprecation('symfony/config', '5.1', 'Passing a null message to un-deprecate a node is deprecated.');
$this->deprecation = [];
return;
}
$message = (string) $args[0];
$package = $version = '';
} else {
$package = (string) $args[0];
$version = (string) $args[1];
$message = (string) ($args[2] ?? 'The child node "%node%" at path "%path%" is deprecated.');
}
$this->deprecation = [
'package' => $package,
'version' => $version,
'message' => $message,
];
}
/**
* Sets if this node can be overridden.
*/
public function setAllowOverwrite(bool $allow)
{
$this->allowOverwrite = $allow;
}
/**
* Sets the closures used for normalization.
*
* @param \Closure[] $closures An array of Closures used for normalization
*/
public function setNormalizationClosures(array $closures)
{
$this->normalizationClosures = $closures;
}
/**
* Sets the closures used for final validation.
*
* @param \Closure[] $closures An array of Closures used for final validation
*/
public function setFinalValidationClosures(array $closures)
{
$this->finalValidationClosures = $closures;
}
/**
* {@inheritdoc}
*/
public function isRequired()
{
return $this->required;
}
/**
* Checks if this node is deprecated.
*
* @return bool
*/
public function isDeprecated()
{
return (bool) $this->deprecation;
}
/**
* Returns the deprecated message.
*
* @param string $node the configuration node name
* @param string $path the path of the node
*
* @return string
*
* @deprecated since Symfony 5.1, use "getDeprecation()" instead.
*/
public function getDeprecationMessage(string $node, string $path)
{
trigger_deprecation('symfony/config', '5.1', 'The "%s()" method is deprecated, use "getDeprecation()" instead.', __METHOD__);
return $this->getDeprecation($node, $path)['message'];
}
/**
* @param string $node The configuration node name
* @param string $path The path of the node
*/
public function getDeprecation(string $node, string $path): array
{
return [
'package' => $this->deprecation['package'] ?? '',
'version' => $this->deprecation['version'] ?? '',
'message' => strtr($this->deprecation['message'] ?? '', ['%node%' => $node, '%path%' => $path]),
];
}
/**
* {@inheritdoc}
*/
public function getName()
{
return $this->name;
}
/**
* {@inheritdoc}
*/
public function getPath()
{
if (null !== $this->parent) {
return $this->parent->getPath().$this->pathSeparator.$this->name;
}
return $this->name;
}
/**
* {@inheritdoc}
*/
final public function merge($leftSide, $rightSide)
{
if (!$this->allowOverwrite) {
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.', $this->getPath()));
}
if ($leftSide !== $leftPlaceholders = self::resolvePlaceholderValue($leftSide)) {
foreach ($leftPlaceholders as $leftPlaceholder) {
$this->handlingPlaceholder = $leftSide;
try {
$this->merge($leftPlaceholder, $rightSide);
} finally {
$this->handlingPlaceholder = null;
}
}
return $rightSide;
}
if ($rightSide !== $rightPlaceholders = self::resolvePlaceholderValue($rightSide)) {
foreach ($rightPlaceholders as $rightPlaceholder) {
$this->handlingPlaceholder = $rightSide;
try {
$this->merge($leftSide, $rightPlaceholder);
} finally {
$this->handlingPlaceholder = null;
}
}
return $rightSide;
}
$this->doValidateType($leftSide);
$this->doValidateType($rightSide);
return $this->mergeValues($leftSide, $rightSide);
}
/**
* {@inheritdoc}
*/
final public function normalize($value)
{
$value = $this->preNormalize($value);
// run custom normalization closures
foreach ($this->normalizationClosures as $closure) {
$value = $closure($value);
}
// resolve placeholder value
if ($value !== $placeholders = self::resolvePlaceholderValue($value)) {
foreach ($placeholders as $placeholder) {
$this->handlingPlaceholder = $value;
try {
$this->normalize($placeholder);
} finally {
$this->handlingPlaceholder = null;
}
}
return $value;
}
// replace value with their equivalent
foreach ($this->equivalentValues as $data) {
if ($data[0] === $value) {
$value = $data[1];
}
}
// validate type
$this->doValidateType($value);
// normalize value
return $this->normalizeValue($value);
}
/**
* Normalizes the value before any other normalization is applied.
*
* @param mixed $value
*
* @return mixed
*/
protected function preNormalize($value)
{
return $value;
}
/**
* Returns parent node for this node.
*
* @return NodeInterface|null
*/
public function getParent()
{
return $this->parent;
}
/**
* {@inheritdoc}
*/
final public function finalize($value)
{
if ($value !== $placeholders = self::resolvePlaceholderValue($value)) {
foreach ($placeholders as $placeholder) {
$this->handlingPlaceholder = $value;
try {
$this->finalize($placeholder);
} finally {
$this->handlingPlaceholder = null;
}
}
return $value;
}
$this->doValidateType($value);
$value = $this->finalizeValue($value);
// Perform validation on the final value if a closure has been set.
// The closure is also allowed to return another value.
foreach ($this->finalValidationClosures as $closure) {
try {
$value = $closure($value);
} catch (Exception $e) {
if ($e instanceof UnsetKeyException && null !== $this->handlingPlaceholder) {
continue;
}
throw $e;
} catch (\Exception $e) {
throw new InvalidConfigurationException(sprintf('Invalid configuration for path "%s": ', $this->getPath()).$e->getMessage(), $e->getCode(), $e);
}
}
return $value;
}
/**
* Validates the type of a Node.
*
* @param mixed $value The value to validate
*
* @throws InvalidTypeException when the value is invalid
*/
abstract protected function validateType($value);
/**
* Normalizes the value.
*
* @param mixed $value The value to normalize
*
* @return mixed
*/
abstract protected function normalizeValue($value);
/**
* Merges two values together.
*
* @param mixed $leftSide
* @param mixed $rightSide
*
* @return mixed
*/
abstract protected function mergeValues($leftSide, $rightSide);
/**
* Finalizes a value.
*
* @param mixed $value The value to finalize
*
* @return mixed
*/
abstract protected function finalizeValue($value);
/**
* Tests if placeholder values are allowed for this node.
*/
protected function allowPlaceholders(): bool
{
return true;
}
/**
* Tests if a placeholder is being handled currently.
*/
protected function isHandlingPlaceholder(): bool
{
return null !== $this->handlingPlaceholder;
}
/**
* Gets allowed dynamic types for this node.
*/
protected function getValidPlaceholderTypes(): array
{
return [];
}
private static function resolvePlaceholderValue($value)
{
if (\is_string($value)) {
if (isset(self::$placeholders[$value])) {
return self::$placeholders[$value];
}
foreach (self::$placeholderUniquePrefixes as $placeholderUniquePrefix) {
if (str_starts_with($value, $placeholderUniquePrefix)) {
return [];
}
}
}
return $value;
}
private function doValidateType($value): void
{
if (null !== $this->handlingPlaceholder && !$this->allowPlaceholders()) {
$e = new InvalidTypeException(sprintf('A dynamic value is not compatible with a "%s" node type at path "%s".', static::class, $this->getPath()));
$e->setPath($this->getPath());
throw $e;
}
if (null === $this->handlingPlaceholder || null === $value) {
$this->validateType($value);
return;
}
$knownTypes = array_keys(self::$placeholders[$this->handlingPlaceholder]);
$validTypes = $this->getValidPlaceholderTypes();
if ($validTypes && array_diff($knownTypes, $validTypes)) {
$e = new InvalidTypeException(sprintf(
'Invalid type for path "%s". Expected %s, but got %s.',
$this->getPath(),
1 === \count($validTypes) ? '"'.reset($validTypes).'"' : 'one of "'.implode('", "', $validTypes).'"',
1 === \count($knownTypes) ? '"'.reset($knownTypes).'"' : 'one of "'.implode('", "', $knownTypes).'"'
));
if ($hint = $this->getInfo()) {
$e->addHint($hint);
}
$e->setPath($this->getPath());
throw $e;
}
$this->validateType($value);
}
}