52 lines
2.0 KiB
PHP
52 lines
2.0 KiB
PHP
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<?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\DependencyInjection\Compiler;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\Exception\RuntimeException;
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/**
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* This pass validates aliases, it provides the following checks:
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*
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* - An alias which happens to be an interface must resolve to a service implementing this interface. This ensures injecting the aliased interface won't cause a type error at runtime.
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*/
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class CheckAliasValidityPass implements CompilerPassInterface
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{
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public function process(ContainerBuilder $container): void
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{
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foreach ($container->getAliases() as $id => $alias) {
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try {
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if (!$container->hasDefinition((string) $alias)) {
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continue;
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}
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$target = $container->getDefinition((string) $alias);
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if (null === $target->getClass() || null !== $target->getFactory()) {
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continue;
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}
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$reflection = $container->getReflectionClass($id);
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if (null === $reflection || !$reflection->isInterface()) {
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continue;
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}
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$targetReflection = $container->getReflectionClass($target->getClass());
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if (null !== $targetReflection && !$targetReflection->implementsInterface($id)) {
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throw new RuntimeException(\sprintf('Invalid alias definition: alias "%s" is referencing class "%s" but this class does not implement "%s". Because this alias is an interface, "%s" must implement "%s".', $id, $target->getClass(), $id, $target->getClass(), $id));
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}
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} catch (\ReflectionException) {
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continue;
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}
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}
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}
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}
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