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\UX\TwigComponent;
use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
use Symfony\Contracts\Service\ResetInterface;
use Symfony\UX\TwigComponent\Event\PostRenderEvent;
use Symfony\UX\TwigComponent\Event\PreCreateForRenderEvent;
use Symfony\UX\TwigComponent\Event\PreRenderEvent;
use Twig\Environment;
/**
* @author Kevin Bond <kevinbond@gmail.com>
*
* @internal
*/
final class ComponentRenderer implements ComponentRendererInterface, ResetInterface
{
private array $templateClasses = [];
public function __construct(
private Environment $twig,
private EventDispatcherInterface $dispatcher,
private ComponentFactory $factory,
private ComponentProperties $componentProperties,
private ComponentStack $componentStack,
) {
}
/**
* Allow the render process to be short-circuited.
*/
public function preCreateForRender(string $name, array $props = []): ?string
{
$event = new PreCreateForRenderEvent($name, $props);
$this->dispatcher->dispatch($event);
return $event->getRenderedString();
}
public function createAndRender(string $name, array $props = []): string
{
if ($preRendered = $this->preCreateForRender($name, $props)) {
return $preRendered;
}
return $this->render($this->factory->create($name, $props));
}
public function render(MountedComponent $mounted): string
{
$this->componentStack->push($mounted);
$event = $this->preRender($mounted);
$variables = $event->getVariables();
// see ComponentNode. When rendering an individual embedded component,
// *not* through its parent, we need to set the parent template.
if ($templateIndex = $event->getTemplateIndex()) {
$variables['__parent__'] = $event->getParentTemplateForEmbedded();
}
try {
return $this->twig->loadTemplate(
$this->templateClasses[$template = $event->getTemplate()] ??= $this->twig->getTemplateClass($template),
$template,
$templateIndex,
)->render($variables);
} finally {
$mounted = $this->componentStack->pop();
$event = new PostRenderEvent($mounted);
$this->dispatcher->dispatch($event);
}
}
public function startEmbeddedComponentRender(string $name, array $props, array $context, string $hostTemplateName, int $index): PreRenderEvent
{
$context[PreRenderEvent::EMBEDDED] = true;
$mounted = $this->factory->create($name, $props);
$mounted->addExtraMetadata('hostTemplate', $hostTemplateName);
$mounted->addExtraMetadata('embeddedTemplateIndex', $index);
$this->componentStack->push($mounted);
return $this->preRender($mounted, $context);
}
public function finishEmbeddedComponentRender(): void
{
$mounted = $this->componentStack->pop();
$event = new PostRenderEvent($mounted);
$this->dispatcher->dispatch($event);
}
private function preRender(MountedComponent $mounted, array $context = []): PreRenderEvent
{
$component = $mounted->getComponent();
$metadata = $this->factory->metadataFor($mounted->getName());
$classProps = [];
if (!$metadata->isAnonymous()) {
$classProps = $this->componentProperties->getProperties($component, $metadata->isPublicPropsExposed());
}
// expose public properties and properties marked with ExposeInTemplate attribute
$props = [...$mounted->getInputProps(), ...$classProps];
$event = new PreRenderEvent($mounted, $metadata, [
...$context,
...$props,
$metadata->getAttributesVar() => $mounted->getAttributes(),
]);
$this->dispatcher->dispatch($event);
$event->setVariables([
...$event->getVariables(),
// add the component as "this"
'this' => $component,
'computed' => new ComputedPropertiesProxy($component),
'outerScope' => $context,
// keep this line for BC break reasons
'__props' => $classProps,
// add the context in a separate variable to keep track
// of what is coming from outside the component, excluding props
// as they override initial context values
'__context' => array_diff_key($context, $props),
]);
return $event;
}
public function reset(): void
{
$this->templateClasses = [];
}
}

vendor/symfony/ux-twig-component/src/ComponentRenderer.php line 77