diff vendor/symfony/dependency-injection/Compiler/CheckReferenceValidityPass.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/dependency-injection/Compiler/CheckReferenceValidityPass.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,96 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+
+/**
+ * Checks the validity of references.
+ *
+ * The following checks are performed by this pass:
+ * - target definitions are not abstract
+ *
+ * @author Johannes M. Schmitt <[e-mail]>
+ */
+class CheckReferenceValidityPass implements CompilerPassInterface
+{
+    private $container;
+    private $currentId;
+
+    /**
+     * Processes the ContainerBuilder to validate References.
+     *
+     * @param ContainerBuilder $container
+     */
+    public function process(ContainerBuilder $container)
+    {
+        $this->container = $container;
+
+        foreach ($container->getDefinitions() as $id => $definition) {
+            if ($definition->isSynthetic() || $definition->isAbstract()) {
+                continue;
+            }
+
+            $this->currentId = $id;
+
+            $this->validateReferences($definition->getArguments());
+            $this->validateReferences($definition->getMethodCalls());
+            $this->validateReferences($definition->getProperties());
+        }
+    }
+
+    /**
+     * Validates an array of References.
+     *
+     * @param array $arguments An array of Reference objects
+     *
+     * @throws RuntimeException when there is a reference to an abstract definition.
+     */
+    private function validateReferences(array $arguments)
+    {
+        foreach ($arguments as $argument) {
+            if (is_array($argument)) {
+                $this->validateReferences($argument);
+            } elseif ($argument instanceof Reference) {
+                $targetDefinition = $this->getDefinition((string) $argument);
+
+                if (null !== $targetDefinition && $targetDefinition->isAbstract()) {
+                    throw new RuntimeException(sprintf(
+                        'The definition "%s" has a reference to an abstract definition "%s". '
+                       .'Abstract definitions cannot be the target of references.',
+                       $this->currentId,
+                       $argument
+                    ));
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns the Definition given an id.
+     *
+     * @param string $id Definition identifier
+     *
+     * @return Definition
+     */
+    private function getDefinition($id)
+    {
+        if (!$this->container->hasDefinition($id)) {
+            return;
+        }
+
+        return $this->container->getDefinition($id);
+    }
+}