[HttpKernel] Fix mem usage when stripping the prod container

Author: nicolas-grekas

Dumper/PhpDumper.php

@@ -23,6 +23,7 @@
 use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
 use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface as ProxyDumper;
 use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\NullDumper;
+use Symfony\Component\HttpKernel\Kernel;
 
 /**
  * PhpDumper dumps a service container as a PHP class.
@@ -53,6 +54,7 @@ class PhpDumper extends Dumper
     private $reservedVariables = array('instance', 'class');
     private $targetDirRegex;
     private $targetDirMaxMatches;
+    private $docStar;
 
     /**
      * @var \Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface
@@ -97,7 +99,9 @@ public function dump(array $options = array())
         $options = array_merge(array(
             'class' => 'ProjectServiceContainer',
             'base_class' => 'Container',
+            'debug' => true,
         ), $options);
+        $this->docStar = $options['debug'] ? '*' : '';
 
         if (!empty($options['file']) && is_dir($dir = dirname($options['file']))) {
             // Build a regexp where the first root dirs are mandatory,
@@ -219,9 +223,15 @@ private function addProxyClasses()
             array($this->getProxyDumper(), 'isProxyCandidate')
         );
         $code = '';
+        $strip = '' === $this->docStar && method_exists('Symfony\Component\HttpKernel\Kernel', 'stripComments');
 
         foreach ($definitions as $definition) {
-            $code .= "\n".$this->getProxyDumper()->getProxyCode($definition);
+            $proxyCode = "\n".$this->getProxyDumper()->getProxyCode($definition);
+            if ($strip) {
+                $proxyCode = "<?php\n".$proxyCode;
+                $proxyCode = substr(Kernel::stripComments($proxyCode), 5);
+            }
+            $code .= $proxyCode;
         }
 
         return $code;
@@ -589,7 +599,7 @@ private function addService($id, $definition)
         $visibility = $isProxyCandidate ? 'public' : 'protected';
         $code = <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Gets the '$id' service.$doc
      *$lazyInitializationDoc
      * $return
@@ -699,7 +709,7 @@ private function addServiceSynchronizer($id, Definition $definition)
 
         return <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Updates the '$id' service.
      */
     protected function synchronize{$this->camelize($id)}Service()
@@ -760,7 +770,7 @@ private function startClass($class, $baseClass)
 use Symfony\Component\DependencyInjection\Exception\RuntimeException;
 $bagClass
 
-/**
+/*{$this->docStar}
  * $class.
  *
  * This class has been auto-generated
@@ -786,7 +796,7 @@ private function addConstructor()
 
         $code = <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Constructor.
      */
     public function __construct()
@@ -823,7 +833,7 @@ private function addFrozenConstructor()
 
         $code = <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Constructor.
      */
     public function __construct()
@@ -970,11 +980,14 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 EOF;
+            if ('' === $this->docStar) {
+                $code = str_replace('/**', '/*', $code);
+            }
         }
 
         $code .= <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Gets the default parameters.
      *
      * @return array An array of the default parameters