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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\HttpKernel\Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver\SessionValueResolver;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver\TraceableValueResolver;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver\VariadicValueResolver;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactory;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactoryInterface;
/**
* Responsible for resolving the arguments passed to an action.
*
* @author Iltar van der Berg <kjarli@gmail.com>
*/
final class ArgumentResolver implements ArgumentResolverInterface
{
private ArgumentMetadataFactoryInterface $argumentMetadataFactory;
private iterable $argumentValueResolvers;
/**
* @param iterable<mixed, ArgumentValueResolverInterface|ValueResolverInterface> $argumentValueResolvers
*/
public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, iterable $argumentValueResolvers = [])
{
$this->argumentMetadataFactory = $argumentMetadataFactory ?? new ArgumentMetadataFactory();
$this->argumentValueResolvers = $argumentValueResolvers ?: self::getDefaultArgumentValueResolvers();
}
public function getArguments(Request $request, callable $controller, \ReflectionFunctionAbstract $reflector = null): array
{
$arguments = [];
foreach ($this->argumentMetadataFactory->createArgumentMetadata($controller, $reflector) as $metadata) {
foreach ($this->argumentValueResolvers as $resolver) {
if ((!$resolver instanceof ValueResolverInterface || $resolver instanceof TraceableValueResolver) && !$resolver->supports($request, $metadata)) {
continue;
}
$count = 0;
foreach ($resolver->resolve($request, $metadata) as $argument) {
++$count;
$arguments[] = $argument;
}
if (1 < $count && !$metadata->isVariadic()) {
throw new \InvalidArgumentException(sprintf('"%s::resolve()" must yield at most one value for non-variadic arguments.', get_debug_type($resolver)));
}
if ($count) {
// continue to the next controller argument
continue 2;
}
if (!$resolver instanceof ValueResolverInterface) {
throw new \InvalidArgumentException(sprintf('"%s::resolve()" must yield at least one value.', get_debug_type($resolver)));
}
}
$representative = $controller;
if (\is_array($representative)) {
$representative = sprintf('%s::%s()', \get_class($representative[0]), $representative[1]);
} elseif (\is_object($representative)) {
$representative = get_debug_type($representative);
}
throw new \RuntimeException(sprintf('Controller "%s" requires that you provide a value for the "$%s" argument. Either the argument is nullable and no null value has been provided, no default value has been provided or because there is a non optional argument after this one.', $representative, $metadata->getName()));
}
return $arguments;
}
/**
* @return iterable<int, ArgumentValueResolverInterface>
*/
public static function getDefaultArgumentValueResolvers(): iterable
{
return [
new RequestAttributeValueResolver(),
new RequestValueResolver(),
new SessionValueResolver(),
new DefaultValueResolver(),
new VariadicValueResolver(),
];
}
}
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