fixed performance when compiling large files

diff --git a/CHANGELOG b/CHANGELOG
index 9b4c198..a8e1ca0 100644 (file)
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 * 1.6.4 (2012-XX-XX)
 
+ * fixed performance when compiling large files
  * optimized parent template creation when the template does not use dynamic inheritance
 
 * 1.6.3 (2012-03-22)

diff --git a/lib/Twig/Compiler.php b/lib/Twig/Compiler.php
index 656b030..ae415a2 100644 (file)
--- a/lib/Twig/Compiler.php
+++ b/lib/Twig/Compiler.php
@@ -23,6 +23,8 @@ class Twig_Compiler implements Twig_CompilerInterface
     protected $indentation;
     protected $env;
     protected $debugInfo;
+    protected $sourceOffset;
+    protected $sourceLine;
 
     /**
      * Constructor.
@@ -67,6 +69,8 @@ class Twig_Compiler implements Twig_CompilerInterface
     {
         $this->lastLine = null;
         $this->source = '';
+        $this->sourceOffset = 0;
+        $this->sourceLine = 0;
         $this->indentation = $indentation;
 
         $node->compile($this);
@@ -188,7 +192,9 @@ class Twig_Compiler implements Twig_CompilerInterface
     public function addDebugInfo(Twig_NodeInterface $node)
     {
         if ($node->getLine() != $this->lastLine) {
-            $this->debugInfo[substr_count($this->source, "\n")] = $node->getLine();
+            $this->sourceLine += substr_count($this->source, "\n", $this->sourceOffset);
+            $this->sourceOffset = strlen($this->source);
+            $this->debugInfo[$this->sourceLine] = $node->getLine();
 
             $this->lastLine = $node->getLine();
             $this->write("// line {$node->getLine()}\n");