ModuleAutoloader to build classmap array as it discovers Module classes

Rationale is that we can use this array to build a classmap cache which can be
used to bypass the scanning process for subsequent requests.

ModuleAutoloader.php

@@ -34,6 +34,11 @@ class ModuleAutoloader implements SplAutoloader
         'zip',
     );
 
+    /**
+     * @var array An array of module classes to their containing files
+     */
+    protected $moduleClassMap = array();
+
     /**
      * Constructor
      *
@@ -124,6 +129,7 @@ protected function loadModuleFromDir($dirPath, $class)
             // Found directory with Module.php in it
             require_once $file->getRealPath();
             if (class_exists($class)) {
+                $this->moduleClassMap[$class] = $file->getRealPath();
                 return $class;
             }
         }
@@ -151,6 +157,7 @@ protected function loadModuleFromPhar($pharPath, $class)
             // First see if the stub makes the Module class available
             require_once $file->getRealPath();
             if (class_exists($class)) {
+                $this->moduleClassMap[$class] = $file->getRealPath();
                 return $class;
             }
         }
@@ -160,6 +167,7 @@ protected function loadModuleFromPhar($pharPath, $class)
         if ($moduleFile->isReadable() && $moduleFile->isFile()) {
             require_once $moduleClassFile;
             if (class_exists($class)) {
+                $this->moduleClassMap[$class] = $moduleClassFile;
                 return $class;
             }
         }
@@ -172,6 +180,7 @@ protected function loadModuleFromPhar($pharPath, $class)
         if ($moduleFile->isReadable() && $moduleFile->isFile()) {
             require_once $moduleClassFile;
             if (class_exists($class)) {
+                $this->moduleClassMap[$class] = $moduleClassFile;
                 return $class;
             }
         }