142 lines
		
	
	
		
			6.0 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			142 lines
		
	
	
		
			6.0 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\HttpKernel\Controller;
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use Psr\Container\ContainerInterface;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpKernel\Attribute\ValueResolver;
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use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver;
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use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver;
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use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver;
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use Symfony\Component\HttpKernel\Controller\ArgumentResolver\SessionValueResolver;
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use Symfony\Component\HttpKernel\Controller\ArgumentResolver\VariadicValueResolver;
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use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactory;
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use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactoryInterface;
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use Symfony\Component\HttpKernel\Exception\NearMissValueResolverException;
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use Symfony\Component\HttpKernel\Exception\ResolverNotFoundException;
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use Symfony\Contracts\Service\ServiceProviderInterface;
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/**
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 * Responsible for resolving the arguments passed to an action.
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 *
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 * @author Iltar van der Berg <kjarli@gmail.com>
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 */
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final class ArgumentResolver implements ArgumentResolverInterface
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{
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    private ArgumentMetadataFactoryInterface $argumentMetadataFactory;
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    private iterable $argumentValueResolvers;
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    /**
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     * @param iterable<mixed, ValueResolverInterface> $argumentValueResolvers
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     */
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    public function __construct(
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        ?ArgumentMetadataFactoryInterface $argumentMetadataFactory = null,
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        iterable $argumentValueResolvers = [],
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        private ?ContainerInterface $namedResolvers = null,
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    ) {
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        $this->argumentMetadataFactory = $argumentMetadataFactory ?? new ArgumentMetadataFactory();
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        $this->argumentValueResolvers = $argumentValueResolvers ?: self::getDefaultArgumentValueResolvers();
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    }
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    public function getArguments(Request $request, callable $controller, ?\ReflectionFunctionAbstract $reflector = null): array
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    {
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        $arguments = [];
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        foreach ($this->argumentMetadataFactory->createArgumentMetadata($controller, $reflector) as $metadata) {
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            $argumentValueResolvers = $this->argumentValueResolvers;
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            $disabledResolvers = [];
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            if ($this->namedResolvers && $attributes = $metadata->getAttributesOfType(ValueResolver::class, $metadata::IS_INSTANCEOF)) {
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                $resolverName = null;
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                foreach ($attributes as $attribute) {
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                    if ($attribute->disabled) {
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                        $disabledResolvers[$attribute->resolver] = true;
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                    } elseif ($resolverName) {
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                        throw new \LogicException(\sprintf('You can only pin one resolver per argument, but argument "$%s" of "%s()" has more.', $metadata->getName(), $metadata->getControllerName()));
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                    } else {
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                        $resolverName = $attribute->resolver;
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                    }
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                }
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                if ($resolverName) {
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                    if (!$this->namedResolvers->has($resolverName)) {
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                        throw new ResolverNotFoundException($resolverName, $this->namedResolvers instanceof ServiceProviderInterface ? array_keys($this->namedResolvers->getProvidedServices()) : []);
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                    }
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                    $argumentValueResolvers = [
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                        $this->namedResolvers->get($resolverName),
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                        new RequestAttributeValueResolver(),
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                        new DefaultValueResolver(),
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                    ];
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                }
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            }
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            $valueResolverExceptions = [];
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            foreach ($argumentValueResolvers as $name => $resolver) {
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                if (isset($disabledResolvers[\is_int($name) ? $resolver::class : $name])) {
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                    continue;
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                }
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                try {
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                    $count = 0;
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                    foreach ($resolver->resolve($request, $metadata) as $argument) {
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                        ++$count;
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                        $arguments[] = $argument;
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                    }
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                } catch (NearMissValueResolverException $e) {
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                    $valueResolverExceptions[] = $e;
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                }
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                if (1 < $count && !$metadata->isVariadic()) {
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                    throw new \InvalidArgumentException(\sprintf('"%s::resolve()" must yield at most one value for non-variadic arguments.', get_debug_type($resolver)));
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                }
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                if ($count) {
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                    // continue to the next controller argument
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                    continue 2;
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                }
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            }
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            $reasons = array_map(static fn (NearMissValueResolverException $e) => $e->getMessage(), $valueResolverExceptions);
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            if (!$reasons) {
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                $reasons[] = 'Either the argument is nullable and no null value has been provided, no default value has been provided or there is a non-optional argument after this one.';
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            }
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            $reasonCounter = 1;
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            if (\count($reasons) > 1) {
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                foreach ($reasons as $i => $reason) {
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                    $reasons[$i] = $reasonCounter.') '.$reason;
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                    ++$reasonCounter;
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                }
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            }
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            throw new \RuntimeException(\sprintf('Controller "%s" requires the "$%s" argument that could not be resolved. '.($reasonCounter > 1 ? 'Possible reasons: ' : '').'%s', $metadata->getControllerName(), $metadata->getName(), implode(' ', $reasons)));
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        }
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        return $arguments;
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    }
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    /**
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     * @return iterable<int, ValueResolverInterface>
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     */
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    public static function getDefaultArgumentValueResolvers(): iterable
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    {
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        return [
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            new RequestAttributeValueResolver(),
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            new RequestValueResolver(),
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            new SessionValueResolver(),
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            new DefaultValueResolver(),
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            new VariadicValueResolver(),
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        ];
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    }
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}
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