diff core/lib/Drupal/Core/DependencyInjection/YamlFileLoader.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/DependencyInjection/YamlFileLoader.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,405 @@
+<?php
+// @codingStandardsIgnoreFile
+
+namespace Drupal\Core\DependencyInjection;
+
+use Drupal\Component\FileCache\FileCacheFactory;
+use Drupal\Core\Serialization\Yaml;
+use Symfony\Component\DependencyInjection\Alias;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\DefinitionDecorator;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+
+/**
+ * YamlFileLoader loads YAML files service definitions.
+ *
+ * Drupal does not use Symfony's Config component, and Symfony's dependency on
+ * it cannot be removed easily. Therefore, this is a partial but mostly literal
+ * copy of upstream, which does not depend on the Config component.
+ *
+ * @see \Symfony\Component\DependencyInjection\Loader\YamlFileLoader
+ * @see https://github.com/symfony/symfony/pull/10920
+ *
+ * NOTE: 98% of this code is a literal copy of Symfony's YamlFileLoader.
+ *
+ * This file does NOT follow Drupal coding standards, so as to simplify future
+ * synchronizations.
+ */
+class YamlFileLoader
+{
+
+    /**
+     * @var \Drupal\Core\DependencyInjection\ContainerBuilder $container
+     */
+    protected $container;
+
+    /**
+     * File cache object.
+     *
+     * @var \Drupal\Component\FileCache\FileCacheInterface
+     */
+    protected $fileCache;
+
+
+    public function __construct(ContainerBuilder $container)
+    {
+        $this->container = $container;
+        $this->fileCache = FileCacheFactory::get('container_yaml_loader');
+    }
+
+    /**
+     * Loads a Yaml file.
+     *
+     * @param mixed $file
+     *   The resource
+     */
+    public function load($file)
+    {
+        // Load from the file cache, fall back to loading the file.
+        $content = $this->fileCache->get($file);
+        if (!$content) {
+            $content = $this->loadFile($file);
+            $this->fileCache->set($file, $content);
+        }
+
+        // Not supported.
+        //$this->container->addResource(new FileResource($path));
+
+        // empty file
+        if (null === $content) {
+            return;
+        }
+
+        // imports
+        // Not supported.
+        //$this->parseImports($content, $file);
+
+        // parameters
+        if (isset($content['parameters'])) {
+            if (!is_array($content['parameters'])) {
+                throw new InvalidArgumentException(sprintf('The "parameters" key should contain an array in %s. Check your YAML syntax.', $file));
+            }
+
+            foreach ($content['parameters'] as $key => $value) {
+                $this->container->setParameter($key, $this->resolveServices($value));
+            }
+        }
+
+        // extensions
+        // Not supported.
+        //$this->loadFromExtensions($content);
+
+        // services
+        $this->parseDefinitions($content, $file);
+    }
+
+    /**
+     * Parses definitions
+     *
+     * @param array $content
+     * @param string $file
+     */
+    private function parseDefinitions($content, $file)
+    {
+        if (!isset($content['services'])) {
+            return;
+        }
+
+        if (!is_array($content['services'])) {
+            throw new InvalidArgumentException(sprintf('The "services" key should contain an array in %s. Check your YAML syntax.', $file));
+        }
+
+        // Some extensions split up their dependencies into multiple files.
+        if (isset($content['_provider'])) {
+            $provider = $content['_provider'];
+        }
+        else {
+            $basename = basename($file);
+            list($provider, ) = explode('.', $basename, 2);
+        }
+        foreach ($content['services'] as $id => $service) {
+            $service['tags'][] = ['name' => '_provider', 'provider' => $provider];
+            $this->parseDefinition($id, $service, $file);
+        }
+    }
+
+    /**
+     * Parses a definition.
+     *
+     * @param string $id
+     * @param array $service
+     * @param string $file
+     *
+     * @throws InvalidArgumentException
+     *   When tags are invalid.
+     */
+    private function parseDefinition($id, $service, $file)
+    {
+        if (is_string($service) && 0 === strpos($service, '@')) {
+            $this->container->setAlias($id, substr($service, 1));
+
+            return;
+        }
+
+        if (!is_array($service)) {
+            throw new InvalidArgumentException(sprintf('A service definition must be an array or a string starting with "@" but %s found for service "%s" in %s. Check your YAML syntax.', gettype($service), $id, $file));
+        }
+
+        if (isset($service['alias'])) {
+            $public = !array_key_exists('public', $service) || (bool) $service['public'];
+            $this->container->setAlias($id, new Alias($service['alias'], $public));
+
+            return;
+        }
+
+        if (isset($service['parent'])) {
+            $definition = new DefinitionDecorator($service['parent']);
+        } else {
+            $definition = new Definition();
+        }
+
+        if (isset($service['class'])) {
+            $definition->setClass($service['class']);
+        }
+
+        if (isset($service['shared'])) {
+            $definition->setShared($service['shared']);
+        }
+
+        if (isset($service['synthetic'])) {
+            $definition->setSynthetic($service['synthetic']);
+        }
+
+        if (isset($service['lazy'])) {
+            $definition->setLazy($service['lazy']);
+        }
+
+        if (isset($service['public'])) {
+            $definition->setPublic($service['public']);
+        }
+
+        if (isset($service['abstract'])) {
+            $definition->setAbstract($service['abstract']);
+        }
+
+        if (array_key_exists('deprecated', $service)) {
+            $definition->setDeprecated(true, $service['deprecated']);
+        }
+
+        if (isset($service['factory'])) {
+            if (is_string($service['factory'])) {
+                if (strpos($service['factory'], ':') !== false && strpos($service['factory'], '::') === false) {
+                    $parts = explode(':', $service['factory']);
+                    $definition->setFactory(array($this->resolveServices('@'.$parts[0]), $parts[1]));
+                } else {
+                    $definition->setFactory($service['factory']);
+                }
+            } else {
+                $definition->setFactory(array($this->resolveServices($service['factory'][0]), $service['factory'][1]));
+            }
+        }
+
+        if (isset($service['factory_class'])) {
+            $definition->setFactory($service['factory_class']);
+        }
+
+        if (isset($service['factory_method'])) {
+            $definition->setFactory($service['factory_method']);
+        }
+
+        if (isset($service['factory_service'])) {
+            $definition->setFactory($service['factory_service']);
+        }
+
+        if (isset($service['file'])) {
+            $definition->setFile($service['file']);
+        }
+
+        if (isset($service['arguments'])) {
+            $definition->setArguments($this->resolveServices($service['arguments']));
+        }
+
+        if (isset($service['properties'])) {
+            $definition->setProperties($this->resolveServices($service['properties']));
+        }
+
+        if (isset($service['configurator'])) {
+            if (is_string($service['configurator'])) {
+                $definition->setConfigurator($service['configurator']);
+            } else {
+                $definition->setConfigurator(array($this->resolveServices($service['configurator'][0]), $service['configurator'][1]));
+            }
+        }
+
+        if (isset($service['calls'])) {
+            if (!is_array($service['calls'])) {
+                throw new InvalidArgumentException(sprintf('Parameter "calls" must be an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
+            }
+
+            foreach ($service['calls'] as $call) {
+                if (isset($call['method'])) {
+                    $method = $call['method'];
+                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments']) : array();
+                } else {
+                    $method = $call[0];
+                    $args = isset($call[1]) ? $this->resolveServices($call[1]) : array();
+                }
+
+                $definition->addMethodCall($method, $args);
+            }
+        }
+
+        if (isset($service['tags'])) {
+            if (!is_array($service['tags'])) {
+                throw new InvalidArgumentException(sprintf('Parameter "tags" must be an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
+            }
+
+            foreach ($service['tags'] as $tag) {
+                if (!is_array($tag)) {
+                    throw new InvalidArgumentException(sprintf('A "tags" entry must be an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
+                }
+
+                if (!isset($tag['name'])) {
+                    throw new InvalidArgumentException(sprintf('A "tags" entry is missing a "name" key for service "%s" in %s.', $id, $file));
+                }
+
+                $name = $tag['name'];
+                unset($tag['name']);
+
+                foreach ($tag as $attribute => $value) {
+                    if (!is_scalar($value) && null !== $value) {
+                        throw new InvalidArgumentException(sprintf('A "tags" attribute must be of a scalar-type for service "%s", tag "%s", attribute "%s" in %s. Check your YAML syntax.', $id, $name, $attribute, $file));
+                    }
+                }
+
+                $definition->addTag($name, $tag);
+            }
+        }
+
+        if (isset($service['decorates'])) {
+            $renameId = isset($service['decoration_inner_name']) ? $service['decoration_inner_name'] : null;
+            $priority = isset($service['decoration_priority']) ? $service['decoration_priority'] : 0;
+            $definition->setDecoratedService($service['decorates'], $renameId, $priority);
+        }
+
+        if (isset($service['autowire'])) {
+            $definition->setAutowired($service['autowire']);
+        }
+
+        if (isset($service['autowiring_types'])) {
+            if (is_string($service['autowiring_types'])) {
+                $definition->addAutowiringType($service['autowiring_types']);
+            } else {
+                if (!is_array($service['autowiring_types'])) {
+                    throw new InvalidArgumentException(sprintf('Parameter "autowiring_types" must be a string or an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
+                }
+
+                foreach ($service['autowiring_types'] as $autowiringType) {
+                    if (!is_string($autowiringType)) {
+                        throw new InvalidArgumentException(sprintf('A "autowiring_types" attribute must be of type string for service "%s" in %s. Check your YAML syntax.', $id, $file));
+                    }
+
+                    $definition->addAutowiringType($autowiringType);
+                }
+            }
+        }
+
+        $this->container->setDefinition($id, $definition);
+    }
+
+    /**
+     * Loads a YAML file.
+     *
+     * @param string $file
+     *
+     * @return array The file content
+     *
+     * @throws InvalidArgumentException
+     *   When the given file is not a local file or when it does not exist.
+     */
+    protected function loadFile($file)
+    {
+        if (!stream_is_local($file)) {
+            throw new InvalidArgumentException(sprintf('This is not a local file "%s".', $file));
+        }
+
+        if (!file_exists($file)) {
+            throw new InvalidArgumentException(sprintf('The service file "%s" is not valid.', $file));
+        }
+
+        return $this->validate(Yaml::decode(file_get_contents($file)), $file);
+    }
+
+    /**
+     * Validates a YAML file.
+     *
+     * @param mixed $content
+     * @param string $file
+     *
+     * @return array
+     *
+     * @throws InvalidArgumentException
+     *   When service file is not valid.
+     */
+    private function validate($content, $file)
+    {
+        if (null === $content) {
+            return $content;
+        }
+
+        if (!is_array($content)) {
+            throw new InvalidArgumentException(sprintf('The service file "%s" is not valid. It should contain an array. Check your YAML syntax.', $file));
+        }
+
+        if ($invalid_keys = array_diff_key($content, array('parameters' => 1, 'services' => 1))) {
+            throw new InvalidArgumentException(sprintf('The service file "%s" is not valid: it contains invalid keys %s. Services have to be added under "services" and Parameters under "parameters".', $file, $invalid_keys));
+        }
+
+        return $content;
+    }
+
+    /**
+     * Resolves services.
+     *
+     * @param string|array $value
+     *
+     * @return array|string|Reference
+     */
+    private function resolveServices($value)
+    {
+        if (is_array($value)) {
+            $value = array_map(array($this, 'resolveServices'), $value);
+        } elseif (is_string($value) &&  0 === strpos($value, '@=')) {
+            // Not supported.
+            //return new Expression(substr($value, 2));
+            throw new InvalidArgumentException(sprintf("'%s' is an Expression, but expressions are not supported.", $value));
+        } elseif (is_string($value) &&  0 === strpos($value, '@')) {
+            if (0 === strpos($value, '@@')) {
+                $value = substr($value, 1);
+                $invalidBehavior = null;
+            } elseif (0 === strpos($value, '@?')) {
+                $value = substr($value, 2);
+                $invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
+            } else {
+                $value = substr($value, 1);
+                $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+            }
+
+            if ('=' === substr($value, -1)) {
+                $value = substr($value, 0, -1);
+                $strict = false;
+            } else {
+                $strict = true;
+            }
+
+            if (null !== $invalidBehavior) {
+                $value = new Reference($value, $invalidBehavior, $strict);
+            }
+        }
+
+        return $value;
+    }
+
+}