class CheckAliasValidityPass

This pass validates aliases, it provides the following checks:

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.

Hierarchy

class \Symfony\Component\DependencyInjection\Compiler\CheckAliasValidityPass implements \Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface

Expanded class hierarchy of CheckAliasValidityPass

File

vendor/symfony/dependency-injection/Compiler/CheckAliasValidityPass.php, line 22

Namespace

Symfony\Component\DependencyInjection\Compiler

View source

class CheckAliasValidityPass implements CompilerPassInterface {
    public function process(ContainerBuilder $container) : void {
        foreach ($container->getAliases() as $id => $alias) {
            try {
                if (!$container->hasDefinition((string) $alias)) {
                    continue;
                }
                $target = $container->getDefinition((string) $alias);
                if (null === $target->getClass() || null !== $target->getFactory()) {
                    continue;
                }
                $reflection = $container->getReflectionClass($id);
                if (null === $reflection || !$reflection->isInterface()) {
                    continue;
                }
                $targetReflection = $container->getReflectionClass($target->getClass());
                if (null !== $targetReflection && !$targetReflection->implementsInterface($id)) {
                    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));
                }
            } catch (\ReflectionException) {
                continue;
            }
        }
    }

}

Members

Title Sort descending	Modifiers	Object type	Summary	Overriden Title
CheckAliasValidityPass::process	public	function	You can modify the container here before it is dumped to PHP code.	Overrides CompilerPassInterface::process