Merge pull request #130 from kpdecker/defer-compile

Defer compile
2011-10-24 17:27:54 -07:00
parent b501c380af defc2f3403
commit 374a38ed36
1 changed files with 15 additions and 4 deletions
@@ -756,10 +756,21 @@ Handlebars.precompile = function(string, options) {
 Handlebars.compile = function(string, options) {
  options = options || {};

-  var ast = Handlebars.parse(string);
-  var environment = new Handlebars.Compiler().compile(ast, options);
-  var templateSpec = new Handlebars.JavaScriptCompiler().compile(environment, options, undefined, true);
-  return Handlebars.template(templateSpec);
+  var compiled;
+  function compile() {
+    var ast = Handlebars.parse(string);
+    var environment = new Handlebars.Compiler().compile(ast, options);
+    var templateSpec = new Handlebars.JavaScriptCompiler().compile(environment, options, undefined, true);
+    return Handlebars.template(templateSpec);
+  }
+
+  // Template is only compiled on first use and cached after that point.
+  return function(context, options) {
+    if (!compiled) {
+      compiled = compile();
+    }
+    return compiled.call(this, context, options);
+  };
 };

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