--- /dev/null
+<?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\DependencyInjection;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\DependencyInjection\ChildDefinition;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
+use Symfony\Component\DependencyInjection\ContainerAwareInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\LazyProxy\ProxyHelper;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\TypedReference;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Creates the service-locators required by ServiceValueResolver.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class RegisterControllerArgumentLocatorsPass implements CompilerPassInterface
+{
+ private $resolverServiceId;
+ private $controllerTag;
+
+ public function __construct($resolverServiceId = 'argument_resolver.service', $controllerTag = 'controller.service_arguments')
+ {
+ $this->resolverServiceId = $resolverServiceId;
+ $this->controllerTag = $controllerTag;
+ }
+
+ public function process(ContainerBuilder $container)
+ {
+ if (false === $container->hasDefinition($this->resolverServiceId)) {
+ return;
+ }
+
+ $parameterBag = $container->getParameterBag();
+ $controllers = array();
+
+ foreach ($container->findTaggedServiceIds($this->controllerTag, true) as $id => $tags) {
+ $def = $container->getDefinition($id);
+ $def->setPublic(true);
+ $class = $def->getClass();
+ $autowire = $def->isAutowired();
+ $bindings = $def->getBindings();
+
+ // resolve service class, taking parent definitions into account
+ while ($def instanceof ChildDefinition) {
+ $def = $container->findDefinition($def->getParent());
+ $class = $class ?: $def->getClass();
+ $bindings = $def->getBindings();
+ }
+ $class = $parameterBag->resolveValue($class);
+
+ if (!$r = $container->getReflectionClass($class)) {
+ throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
+ }
+ $isContainerAware = $r->implementsInterface(ContainerAwareInterface::class) || is_subclass_of($class, AbstractController::class);
+
+ // get regular public methods
+ $methods = array();
+ $arguments = array();
+ foreach ($r->getMethods(\ReflectionMethod::IS_PUBLIC) as $r) {
+ if ('setContainer' === $r->name && $isContainerAware) {
+ continue;
+ }
+ if (!$r->isConstructor() && !$r->isDestructor() && !$r->isAbstract()) {
+ $methods[strtolower($r->name)] = array($r, $r->getParameters());
+ }
+ }
+
+ // validate and collect explicit per-actions and per-arguments service references
+ foreach ($tags as $attributes) {
+ if (!isset($attributes['action']) && !isset($attributes['argument']) && !isset($attributes['id'])) {
+ $autowire = true;
+ continue;
+ }
+ foreach (array('action', 'argument', 'id') as $k) {
+ if (!isset($attributes[$k][0])) {
+ throw new InvalidArgumentException(sprintf('Missing "%s" attribute on tag "%s" %s for service "%s".', $k, $this->controllerTag, json_encode($attributes, JSON_UNESCAPED_UNICODE), $id));
+ }
+ }
+ if (!isset($methods[$action = strtolower($attributes['action'])])) {
+ throw new InvalidArgumentException(sprintf('Invalid "action" attribute on tag "%s" for service "%s": no public "%s()" method found on class "%s".', $this->controllerTag, $id, $attributes['action'], $class));
+ }
+ list($r, $parameters) = $methods[$action];
+ $found = false;
+
+ foreach ($parameters as $p) {
+ if ($attributes['argument'] === $p->name) {
+ if (!isset($arguments[$r->name][$p->name])) {
+ $arguments[$r->name][$p->name] = $attributes['id'];
+ }
+ $found = true;
+ break;
+ }
+ }
+
+ if (!$found) {
+ throw new InvalidArgumentException(sprintf('Invalid "%s" tag for service "%s": method "%s()" has no "%s" argument on class "%s".', $this->controllerTag, $id, $r->name, $attributes['argument'], $class));
+ }
+ }
+
+ foreach ($methods as list($r, $parameters)) {
+ /** @var \ReflectionMethod $r */
+
+ // create a per-method map of argument-names to service/type-references
+ $args = array();
+ foreach ($parameters as $p) {
+ /** @var \ReflectionParameter $p */
+ $type = $target = ProxyHelper::getTypeHint($r, $p, true);
+ $invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
+
+ if (isset($arguments[$r->name][$p->name])) {
+ $target = $arguments[$r->name][$p->name];
+ if ('?' !== $target[0]) {
+ $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+ } elseif ('' === $target = (string) substr($target, 1)) {
+ throw new InvalidArgumentException(sprintf('A "%s" tag must have non-empty "id" attributes for service "%s".', $this->controllerTag, $id));
+ } elseif ($p->allowsNull() && !$p->isOptional()) {
+ $invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
+ }
+ } elseif (isset($bindings[$bindingName = '$'.$p->name]) || isset($bindings[$bindingName = $type])) {
+ $binding = $bindings[$bindingName];
+
+ list($bindingValue, $bindingId) = $binding->getValues();
+
+ if (!$bindingValue instanceof Reference) {
+ continue;
+ }
+
+ $binding->setValues(array($bindingValue, $bindingId, true));
+ $args[$p->name] = $bindingValue;
+
+ continue;
+ } elseif (!$type || !$autowire) {
+ continue;
+ }
+
+ if (Request::class === $type) {
+ continue;
+ }
+
+ if ($type && !$p->isOptional() && !$p->allowsNull() && !class_exists($type) && !interface_exists($type, false)) {
+ $message = sprintf('Cannot determine controller argument for "%s::%s()": the $%s argument is type-hinted with the non-existent class or interface: "%s".', $class, $r->name, $p->name, $type);
+
+ // see if the type-hint lives in the same namespace as the controller
+ if (0 === strncmp($type, $class, strrpos($class, '\\'))) {
+ $message .= ' Did you forget to add a use statement?';
+ }
+
+ throw new InvalidArgumentException($message);
+ }
+
+ $args[$p->name] = $type ? new TypedReference($target, $type, $r->class, $invalidBehavior) : new Reference($target, $invalidBehavior);
+ }
+ // register the maps as a per-method service-locators
+ if ($args) {
+ $controllers[$id.':'.$r->name] = ServiceLocatorTagPass::register($container, $args);
+ }
+ }
+ }
+
+ $container->getDefinition($this->resolverServiceId)
+ ->replaceArgument(0, ServiceLocatorTagPass::register($container, $controllers));
+ }
+}
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