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

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/dependency-injection/Compiler/ReplaceAliasByActualDefinitionPass.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,126 @@
+<?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\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Replaces aliases with actual service definitions, effectively removing these
+ * aliases.
+ *
+ * @author Johannes M. Schmitt <[e-mail]>
+ */
+class ReplaceAliasByActualDefinitionPass implements CompilerPassInterface
+{
+    private $compiler;
+    private $formatter;
+
+    /**
+     * Process the Container to replace aliases with service definitions.
+     *
+     * @param ContainerBuilder $container
+     *
+     * @throws InvalidArgumentException if the service definition does not exist
+     */
+    public function process(ContainerBuilder $container)
+    {
+        // Setup
+        $this->compiler = $container->getCompiler();
+        $this->formatter = $this->compiler->getLoggingFormatter();
+        // First collect all alias targets that need to be replaced
+        $seenAliasTargets = array();
+        $replacements = array();
+        foreach ($container->getAliases() as $definitionId => $target) {
+            $targetId = (string) $target;
+            // Special case: leave this target alone
+            if ('service_container' === $targetId) {
+                continue;
+            }
+            // Check if target needs to be replaces
+            if (isset($replacements[$targetId])) {
+                $container->setAlias($definitionId, $replacements[$targetId]);
+            }
+            // No need to process the same target twice
+            if (isset($seenAliasTargets[$targetId])) {
+                continue;
+            }
+            // Process new target
+            $seenAliasTargets[$targetId] = true;
+            try {
+                $definition = $container->getDefinition($targetId);
+            } catch (InvalidArgumentException $e) {
+                throw new InvalidArgumentException(sprintf('Unable to replace alias "%s" with actual definition "%s".', $definitionId, $targetId), null, $e);
+            }
+            if ($definition->isPublic()) {
+                continue;
+            }
+            // Remove private definition and schedule for replacement
+            $definition->setPublic(true);
+            $container->setDefinition($definitionId, $definition);
+            $container->removeDefinition($targetId);
+            $replacements[$targetId] = $definitionId;
+        }
+
+        // Now replace target instances in all definitions
+        foreach ($container->getDefinitions() as $definitionId => $definition) {
+            $definition->setArguments($this->updateArgumentReferences($replacements, $definitionId, $definition->getArguments()));
+            $definition->setMethodCalls($this->updateArgumentReferences($replacements, $definitionId, $definition->getMethodCalls()));
+            $definition->setProperties($this->updateArgumentReferences($replacements, $definitionId, $definition->getProperties()));
+            $definition->setFactory($this->updateFactoryReference($replacements, $definition->getFactory()));
+        }
+    }
+
+    /**
+     * Recursively updates references in an array.
+     *
+     * @param array  $replacements Table of aliases to replace
+     * @param string $definitionId Identifier of this definition
+     * @param array  $arguments    Where to replace the aliases
+     *
+     * @return array
+     */
+    private function updateArgumentReferences(array $replacements, $definitionId, array $arguments)
+    {
+        foreach ($arguments as $k => $argument) {
+            // Handle recursion step
+            if (is_array($argument)) {
+                $arguments[$k] = $this->updateArgumentReferences($replacements, $definitionId, $argument);
+                continue;
+            }
+            // Skip arguments that don't need replacement
+            if (!$argument instanceof Reference) {
+                continue;
+            }
+            $referenceId = (string) $argument;
+            if (!isset($replacements[$referenceId])) {
+                continue;
+            }
+            // Perform the replacement
+            $newId = $replacements[$referenceId];
+            $arguments[$k] = new Reference($newId, $argument->getInvalidBehavior());
+            $this->compiler->addLogMessage($this->formatter->formatUpdateReference($this, $definitionId, $referenceId, $newId));
+        }
+
+        return $arguments;
+    }
+
+    private function updateFactoryReference(array $replacements, $factory)
+    {
+        if (is_array($factory) && $factory[0] instanceof Reference && isset($replacements[$referenceId = (string) $factory[0]])) {
+            $factory[0] = new Reference($replacements[$referenceId], $factory[0]->getInvalidBehavior());
+        }
+
+        return $factory;
+    }
+}