From e5c40d02d9c5d287337e9ca316c76725deaf1a63 Mon Sep 17 00:00:00 2001
From: jk <j.koehler@modulingo.de>
Date: Tue, 13 Oct 2015 22:39:39 +0200
Subject: [PATCH] quick check to needsCompile for changed registeredVars with a
 crc32 hash

---
 src/Compiler.php | 12 ++++++++++++
 src/Server.php   |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/src/Compiler.php b/src/Compiler.php
index ca6df8fb..d14e0875 100644
--- a/src/Compiler.php
+++ b/src/Compiler.php
@@ -2701,6 +2701,18 @@ public function unsetVariable($name)
         unset($this->registeredVars[$name]);
     }
 
+    /**
+     * Returns list of variables
+     *
+     * @api
+     *
+     * @return array
+     */
+    public function getVariables()
+    {
+        return $this->registeredVars;
+    }
+
     /**
      * Adds to list of parsed files
      *
diff --git a/src/Server.php b/src/Server.php
index d85a9190..6b2a7003 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -143,6 +143,11 @@ protected function needsCompile($in, $out, &$etag)
                     return true;
                 }
             }
+            
+            $metaVars = crc32(serialize($this->scss->getVariables()));
+            if ($metaVars!=$metadata['vars']) {
+                return true;
+            }
 
             $etag = $metadata['etag'];
 
@@ -213,6 +218,7 @@ protected function compile($in, $out)
             serialize(array(
                 'etag'    => $etag,
                 'imports' => $this->scss->getParsedFiles(),
+                'vars' => crc32(serialize($this->scss->getVariables())),
             ))
         );