From 63d55c0063543b44455fe832aed50a2b348ec53d Mon Sep 17 00:00:00 2001
From: Jairo de Morais <jairodemorais@gmail.com>
Date: Mon, 2 Jul 2012 11:45:02 -0300
Subject: [PATCH] dust resolve reference helper created and refactor if to use
 it

---
 lib/dust-helpers.js | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/lib/dust-helpers.js b/lib/dust-helpers.js
index d8b7b5d6..4a2120cf 100644
--- a/lib/dust-helpers.js
+++ b/lib/dust-helpers.js
@@ -72,22 +72,28 @@ var helpers = {
   contextDump: function(chunk, context, bodies) {
     _console.log(JSON.stringify(context.stack));
     return chunk;
+  },// Utility helping to resolve dust references in the given chunk
+  tap: function( input, chunk, context ){
+    // return given input if there is no dust reference to resolve
+    var output = input;
+    // dust compiles a string to function, if there are references
+    if( typeof input === "function"){
+      output = '';
+      chunk.tap(function(data){
+        output += data;
+        return '';
+      }).render(input, context).untap();
+      if( output === '' ){
+        output = false;
+      }
+    } 
+    return output;
   },
+
   "if": function( chunk, context, bodies, params ){
     if( params && params.cond ){
       var cond = params.cond;
-
-      // resolve dust references in the expression
-      if( typeof cond === "function" ){
-        cond = '';
-        chunk.tap( function( data ){
-          cond += data;
-          return '';
-        } ).render( params.cond, context ).untap();
-        if( cond === '' ){
-          cond = false;
-        }
-      }
+      cond = this.tap(cond, chunk, context);
       // eval expressions with no dust references
       if( eval( cond ) ){
        return chunk.render( bodies.block, context );