Access context objects directly rather than using currentContext var.

lib/handlebars/compiler/compiler.js

@@ -186,7 +186,7 @@ Handlebars.JavaScriptCompiler = function() {};
       if(partial.context) {
         this.ID(partial.context);
       } else {
-        this.opcode('push', 'context');
+        this.opcode('push', 'depth0');
       }
 
       this.opcode('invokePartial', id.original);
@@ -390,7 +390,7 @@ Handlebars.JavaScriptCompiler = function() {};
         out.push('');
       }
 
-      out.push("var buffer = " + this.initializeBuffer() + ", currentContext = context");
+      out.push("var buffer = " + this.initializeBuffer());
 
       // track the last context pushed into place to allow skipping the
       // getContext opcode when it would be a noop
@@ -425,7 +425,7 @@ Handlebars.JavaScriptCompiler = function() {};
 
       this.source.push("return buffer;");
 
-      var params = this.isChild ? ["context", "data"] : ["Handlebars", "context", "helpers", "partials", "data"];
+      var params = this.isChild ? ["depth0", "data"] : ["Handlebars", "depth0", "helpers", "partials", "data"];
 
       for(var i=0, l=this.environment.depths.list.length; i<l; i++) {
         params.push("depth" + this.environment.depths.list[i]);
@@ -468,12 +468,6 @@ Handlebars.JavaScriptCompiler = function() {};
     getContext: function(depth) {
       if(this.lastContext !== depth) {
         this.lastContext = depth;
-
-        if(depth === 0) {
-          this.source.push("currentContext = context;");
-        } else {
-          this.source.push("currentContext = depth" + depth + ";");
-        }
       }
     },
 
@@ -484,17 +478,17 @@ Handlebars.JavaScriptCompiler = function() {};
         var toPush;
 
         if (isScoped) {
-          toPush = topStack + " = " + this.nameLookup('currentContext', name, 'context');
+          toPush = topStack + " = " + this.nameLookup('depth' + this.lastContext, name, 'context');
         } else {
           toPush =  topStack + " = "
               + this.nameLookup('helpers', name, 'helper')
               + " || "
-              + this.nameLookup('currentContext', name, 'context');
+              + this.nameLookup('depth' + this.lastContext, name, 'context');
         }
 
         this.source.push(toPush);
       } else {
-        this.pushStack("currentContext");
+        this.pushStack('depth' + this.lastContext);
       }
     },
 
@@ -504,7 +498,7 @@ Handlebars.JavaScriptCompiler = function() {};
     },
 
     pushStringParam: function(string) {
-      this.pushStack("currentContext");
+      this.pushStack('depth' + this.lastContext);
       this.pushString(string);
     },
 
@@ -572,8 +566,8 @@ Handlebars.JavaScriptCompiler = function() {};
     },
 
     populateCall: function(params, id, helperId, fn) {
-      var paramString = ["context"].concat(params).join(", ");
-      var helperMissingString = ["context"].concat(helperId).concat(params).join(", ");
+      var paramString = ["depth0"].concat(params).join(", ");
+      var helperMissingString = ["depth0"].concat(helperId).concat(params).join(", ");
 
       var nextStack = this.nextStack();
 
@@ -622,7 +616,7 @@ Handlebars.JavaScriptCompiler = function() {};
       for(var i=0, l = depths.length; i<l; i++) {
         depth = depths[i];
 
-        if(depth === 1) { programParams.push("context"); }
+        if(depth === 1) { programParams.push("depth0"); }
         else { programParams.push("depth" + (depth - 1)); }
       }