1 files changed, 21 insertions, 3 deletions
diff --git a/lib/handlebars/compiler/ast.js b/lib/handlebars/compiler/ast.js
index b6c3a03..ce5ee11 100644
--- a/lib/handlebars/compiler/ast.js
+++ b/lib/handlebars/compiler/ast.js
@@ -46,7 +46,6 @@ var AST = {
   MustacheNode: function(rawParams, hash, open, strip, locInfo) {
     LocationInfo.call(this, locInfo);
     this.type = "mustache";
-    this.hash = hash;
     this.strip = strip;
 
     // Open may be a string parsed from the parser or a passed boolean flag
@@ -58,6 +57,25 @@ var AST = {
       this.escaped = !!open;
     }
 
+    if (rawParams instanceof AST.SexprNode) {
+      this.sexpr = rawParams;
+    } else {
+      // Support old AST API
+      this.sexpr = new AST.SexprNode(rawParams, hash);
+    }
+
+    // Support old AST API that stored this info in MustacheNode
+    this.id = this.sexpr.id;
+    this.params = this.sexpr.params;
+    this.hash = this.sexpr.hash;
+    this.eligibleHelper = this.sexpr.eligibleHelper;
+    this.isHelper = this.sexpr.isHelper;
+  },
+
+  SexprNode: function(rawParams, hash) {
+    this.type = "sexpr";
+    this.hash = hash;
+
     var id = this.id = rawParams[0];
     var params = this.params = rawParams.slice(1);
 
@@ -84,8 +102,8 @@ var AST = {
   },
 
   BlockNode: function(mustache, program, inverse, close, locInfo) {
-    if(mustache.id.original !== close.path.original) {
-      throw new Exception(mustache.id.original + " doesn't match " + close.path.original);
+    if(mustache.sexpr.id.original !== close.path.original) {
+      throw new Exception(mustache.sexpr.id.original + " doesn't match " + close.path.original);
     }
 
     LocationInfo.call(this, locInfo);