Symfony Profiler

<?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\Form\ChoiceList\Factory;
use Symfony\Component\Form\ChoiceList\ChoiceListInterface;
use Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface;
use Symfony\Component\Form\ChoiceList\View\ChoiceListView;
use Symfony\Contracts\Service\ResetInterface;
/**
* Caches the choice lists created by the decorated factory.
*
* To cache a list based on its options, arguments must be decorated
* by a {@see Cache\AbstractStaticOption} implementation.
*
* @author Bernhard Schussek <bschussek@gmail.com>
* @author Jules Pietri <jules@heahprod.com>
*/
class CachingFactoryDecorator implements ChoiceListFactoryInterface, ResetInterface
{
private $decoratedFactory;
/**
* @var ChoiceListInterface[]
*/
private $lists = [];
/**
* @var ChoiceListView[]
*/
private $views = [];
/**
* Generates a SHA-256 hash for the given value.
*
* Optionally, a namespace string can be passed. Calling this method will
* the same values, but different namespaces, will return different hashes.
*
* @param mixed $value The value to hash
*
* @return string The SHA-256 hash
*
* @internal
*/
public static function generateHash($value, string $namespace = ''): string
{
if (\is_object($value)) {
$value = spl_object_hash($value);
} elseif (\is_array($value)) {
array_walk_recursive($value, function (&$v) {
if (\is_object($v)) {
$v = spl_object_hash($v);
}
});
}
return hash('sha256', $namespace.':'.serialize($value));
}
public function __construct(ChoiceListFactoryInterface $decoratedFactory)
{
$this->decoratedFactory = $decoratedFactory;
}
/**
* Returns the decorated factory.
*
* @return ChoiceListFactoryInterface The decorated factory
*/
public function getDecoratedFactory()
{
return $this->decoratedFactory;
}
/**
* {@inheritdoc}
*
* @param callable|Cache\ChoiceValue|null $value The callable or static option for
* generating the choice values
* @param callable|Cache\ChoiceFilter|null $filter The callable or static option for
* filtering the choices
*/
public function createListFromChoices(iterable $choices, $value = null/*, $filter = null*/)
{
$filter = \func_num_args() > 2 ? func_get_arg(2) : null;
if ($choices instanceof \Traversable) {
$choices = iterator_to_array($choices);
}
$cache = true;
// Only cache per value and filter when needed. The value is not validated on purpose.
// The decorated factory may decide which values to accept and which not.
if ($value instanceof Cache\ChoiceValue) {
$value = $value->getOption();
} elseif ($value) {
$cache = false;
}
if ($filter instanceof Cache\ChoiceFilter) {
$filter = $filter->getOption();
} elseif ($filter) {
$cache = false;
}
if (!$cache) {
return $this->decoratedFactory->createListFromChoices($choices, $value, $filter);
}
$hash = self::generateHash([$choices, $value, $filter], 'fromChoices');
if (!isset($this->lists[$hash])) {
$this->lists[$hash] = $this->decoratedFactory->createListFromChoices($choices, $value, $filter);
}
return $this->lists[$hash];
}
/**
* {@inheritdoc}
*
* @param ChoiceLoaderInterface|Cache\ChoiceLoader $loader The loader or static loader to load
* the choices lazily
* @param callable|Cache\ChoiceValue|null $value The callable or static option for
* generating the choice values
* @param callable|Cache\ChoiceFilter|null $filter The callable or static option for
* filtering the choices
*/
public function createListFromLoader(ChoiceLoaderInterface $loader, $value = null/*, $filter = null*/)
{
$filter = \func_num_args() > 2 ? func_get_arg(2) : null;
$cache = true;
if ($loader instanceof Cache\ChoiceLoader) {
$loader = $loader->getOption();
} else {
$cache = false;
}
if ($value instanceof Cache\ChoiceValue) {
$value = $value->getOption();
} elseif ($value) {
$cache = false;
}
if ($filter instanceof Cache\ChoiceFilter) {
$filter = $filter->getOption();
} elseif ($filter) {
$cache = false;
}
if (!$cache) {
return $this->decoratedFactory->createListFromLoader($loader, $value, $filter);
}
$hash = self::generateHash([$loader, $value, $filter], 'fromLoader');
if (!isset($this->lists[$hash])) {
$this->lists[$hash] = $this->decoratedFactory->createListFromLoader($loader, $value, $filter);
}
return $this->lists[$hash];
}
/**
* {@inheritdoc}
*
* @param array|callable|Cache\PreferredChoice|null $preferredChoices The preferred choices
* @param callable|false|Cache\ChoiceLabel|null $label The option or static option generating the choice labels
* @param callable|Cache\ChoiceFieldName|null $index The option or static option generating the view indices
* @param callable|Cache\GroupBy|null $groupBy The option or static option generating the group names
* @param array|callable|Cache\ChoiceAttr|null $attr The option or static option generating the HTML attributes
*/
public function createView(ChoiceListInterface $list, $preferredChoices = null, $label = null, $index = null, $groupBy = null, $attr = null)
{
$cache = true;
if ($preferredChoices instanceof Cache\PreferredChoice) {
$preferredChoices = $preferredChoices->getOption();
} elseif ($preferredChoices) {
$cache = false;
}
if ($label instanceof Cache\ChoiceLabel) {
$label = $label->getOption();
} elseif (null !== $label) {
$cache = false;
}
if ($index instanceof Cache\ChoiceFieldName) {
$index = $index->getOption();
} elseif ($index) {
$cache = false;
}
if ($groupBy instanceof Cache\GroupBy) {
$groupBy = $groupBy->getOption();
} elseif ($groupBy) {
$cache = false;
}
if ($attr instanceof Cache\ChoiceAttr) {
$attr = $attr->getOption();
} elseif ($attr) {
$cache = false;
}
if (!$cache) {
return $this->decoratedFactory->createView($list, $preferredChoices, $label, $index, $groupBy, $attr);
}
$hash = self::generateHash([$list, $preferredChoices, $label, $index, $groupBy, $attr]);
if (!isset($this->views[$hash])) {
$this->views[$hash] = $this->decoratedFactory->createView(
$list,
$preferredChoices,
$label,
$index,
$groupBy,
$attr
);
}
return $this->views[$hash];
}
public function reset()
{
$this->lists = [];
$this->views = [];
Cache\AbstractStaticOption::reset();
}
}

vendor/symfony/form/ChoiceList/Factory/CachingFactoryDecorator.php line 115