Implement partial hash evaluation

lib/handlebars/compiler/compiler.js

@@ -203,8 +203,14 @@ Compiler.prototype = {
     var partialName = partial.partialName;
     this.usePartial = true;
 
-    if(partial.context) {
-      this.ID(partial.context);
+    if (partial.hash) {
+      this.accept(partial.hash);
+    } else {
+      this.opcode('push', 'undefined');
+    }
+
+    if (partial.context) {
+      this.accept(partial.context);
     } else {
       this.opcode('push', 'depth0');
     }

lib/handlebars/compiler/javascript-compiler.js

@@ -569,7 +569,7 @@ JavaScriptCompiler.prototype = {
   // This operation pops off a context, invokes a partial with that context,
   // and pushes the result of the invocation back.
   invokePartial: function(name) {
-    var params = [this.nameLookup('partials', name, 'partial'), "'" + name + "'", this.popStack(), "helpers", "partials"];
+    var params = [this.nameLookup('partials', name, 'partial'), "'" + name + "'", this.popStack(), this.popStack(), "helpers", "partials"];
 
     if (this.options.data) {
       params.push("data");

lib/handlebars/runtime.js

@@ -29,8 +29,12 @@ export function template(templateSpec, env) {
 
   // Note: Using env.VM references rather than local var references throughout this section to allow
   // for external users to override these as psuedo-supported APIs.
-  var invokePartialWrapper = function(partial, name, context, helpers, partials, data) {
-    var result = env.VM.invokePartial.apply(this, arguments);
+  var invokePartialWrapper = function(partial, name, context, hash, helpers, partials, data) {
+    if (hash) {
+      context = Utils.extend({}, context, hash);
+    }
+
+    var result = env.VM.invokePartial.call(this, partial, name, context, helpers, partials, data);
     if (result != null) { return result; }
 
     if (env.compile) {

spec/partials.js

@@ -23,6 +23,14 @@ describe('partials', function() {
     shouldCompileToWithPartials(string, [hash, {}, {dude: partial}], true, "Dudes:  Empty");
   });
 
+  it("partials with parameters", function() {
+    var string = "Dudes: {{#dudes}}{{> dude otherDude=name}}{{/dudes}}";
+    var partial = "{{otherDude}} ({{url}}) ";
+    var hash = {dudes: [{name: "Yehuda", url: "http://yehuda"}, {name: "Alan", url: "http://alan"}]};
+    shouldCompileToWithPartials(string, [hash, {}, {dude: partial}], true, "Dudes: Yehuda (http://yehuda) Alan (http://alan) ",
+                    "Basic partials output based on current context.");
+  });
+
   it("partial in a partial", function() {
     var string = "Dudes: {{#dudes}}{{>dude}}{{/dudes}}";
     var dude = "{{name}} {{> url}} ";