migration symfony 5 4 (#300)

* symfony 5.4 (diff dev)

* symfony 5.4 (working)

* symfony 5.4 (update autoload)

* symfony 5.4 (remove swiftmailer mailer implementation)

* symfony 5.4 (php doc and split Global accessor class)


### Impacted packages:

composer require php:">=7.2.5 <8.0.0" symfony/console:5.4.* symfony/dotenv:5.4.* symfony/framework-bundle:5.4.* symfony/twig-bundle:5.4.* symfony/yaml:5.4.* --update-with-dependencies

composer require symfony/stopwatch:5.4.* symfony/web-profiler-bundle:5.4.* --dev --update-with-dependencies

lib/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection\Compiler;
 
+use Symfony\Component\Config\Definition\BaseNode;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Exception\LogicException;
 use Symfony\Component\DependencyInjection\Exception\RuntimeException;
@@ -37,6 +38,7 @@ class MergeExtensionConfigurationPass implements CompilerPassInterface
         $definitions = $container->getDefinitions();
         $aliases = $container->getAliases();
         $exprLangProviders = $container->getExpressionLanguageProviders();
+        $configAvailable = class_exists(BaseNode::class);
 
         foreach ($container->getExtensions() as $extension) {
             if ($extension instanceof PrependExtensionInterface) {
@@ -53,6 +55,9 @@ class MergeExtensionConfigurationPass implements CompilerPassInterface
             if ($resolvingBag instanceof EnvPlaceholderParameterBag && $extension instanceof Extension) {
                 // create a dedicated bag so that we can track env vars per-extension
                 $resolvingBag = new MergeExtensionConfigurationParameterBag($resolvingBag);
+                if ($configAvailable) {
+                    BaseNode::setPlaceholderUniquePrefix($resolvingBag->getEnvPlaceholderUniquePrefix());
+                }
             }
             $config = $resolvingBag->resolveValue($config);
 
@@ -128,9 +133,14 @@ class MergeExtensionConfigurationParameterBag extends EnvPlaceholderParameterBag
     /**
      * {@inheritdoc}
      */
-    public function getEnvPlaceholders()
+    public function getEnvPlaceholders(): array
     {
-        return null !== $this->processedEnvPlaceholders ? $this->processedEnvPlaceholders : parent::getEnvPlaceholders();
+        return $this->processedEnvPlaceholders ?? parent::getEnvPlaceholders();
+    }
+
+    public function getUnusedEnvPlaceholders(): array
+    {
+        return null === $this->processedEnvPlaceholders ? [] : array_diff_key(parent::getEnvPlaceholders(), $this->processedEnvPlaceholders);
     }
 }
 
@@ -153,9 +163,9 @@ class MergeExtensionConfigurationContainerBuilder extends ContainerBuilder
     /**
      * {@inheritdoc}
      */
-    public function addCompilerPass(CompilerPassInterface $pass, $type = PassConfig::TYPE_BEFORE_OPTIMIZATION/*, int $priority = 0*/)
+    public function addCompilerPass(CompilerPassInterface $pass, string $type = PassConfig::TYPE_BEFORE_OPTIMIZATION, int $priority = 0): self
     {
-        throw new LogicException(sprintf('You cannot add compiler pass "%s" from extension "%s". Compiler passes must be registered before the container is compiled.', \get_class($pass), $this->extensionClass));
+        throw new LogicException(sprintf('You cannot add compiler pass "%s" from extension "%s". Compiler passes must be registered before the container is compiled.', get_debug_type($pass), $this->extensionClass));
     }
 
     /**
@@ -163,13 +173,13 @@ class MergeExtensionConfigurationContainerBuilder extends ContainerBuilder
      */
     public function registerExtension(ExtensionInterface $extension)
     {
-        throw new LogicException(sprintf('You cannot register extension "%s" from "%s". Extensions must be registered before the container is compiled.', \get_class($extension), $this->extensionClass));
+        throw new LogicException(sprintf('You cannot register extension "%s" from "%s". Extensions must be registered before the container is compiled.', get_debug_type($extension), $this->extensionClass));
     }
 
     /**
      * {@inheritdoc}
      */
-    public function compile($resolveEnvPlaceholders = false)
+    public function compile(bool $resolveEnvPlaceholders = false)
     {
         throw new LogicException(sprintf('Cannot compile the container in extension "%s".', $this->extensionClass));
     }
@@ -191,7 +201,7 @@ class MergeExtensionConfigurationContainerBuilder extends ContainerBuilder
         }
 
         foreach ($bag->getEnvPlaceholders() as $env => $placeholders) {
-            if (false === strpos($env, ':')) {
+            if (!str_contains($env, ':')) {
                 continue;
             }
             foreach ($placeholders as $placeholder) {