Implement block decorators

These allow for a given block to be wrapped in helper methods or metadata and allow for more control over the current container and method before the code is run.

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/handlebars/compiler/compiler.js b/lib/handlebars/compiler/compiler.js
index a689e7d..64af5da 100644
--- a/lib/handlebars/compiler/compiler.js
+++ b/lib/handlebars/compiler/compiler.js
@@ -156,6 +156,15 @@ Compiler.prototype = {
     this.opcode('append');
   },
 
+  DecoratorBlock(decorator) {
+    let program = decorator.program && this.compileProgram(decorator.program);
+    let params = this.setupFullMustacheParams(decorator, program, undefined),
+        path = decorator.path;
+
+    this.useDecorators = true;
+    this.opcode('registerDecorator', params.length, path.original);
+  },
+
   PartialStatement: function(partial) {
     this.usePartial = true;
 
@@ -201,6 +210,10 @@ Compiler.prototype = {
       this.opcode('append');
     }
   },
+  Decorator(decorator) {
+    this.DecoratorBlock(decorator);
+  },
+
 
   ContentStatement: function(content) {
     if (content.value) {