From 61a011e711054c66d27529c9a63dba3c2d5c5f57 Mon Sep 17 00:00:00 2001
From: Robert Krimen <robertkrimen@gmail.com>
Date: Tue, 4 Jun 2013 20:07:16 -0700
Subject: [PATCH] Add Object.getOwnPropertyNames (sdgoij)

---
 builtin_object.go | 14 +++++++++++++-
 global.go         |  1 +
 object_test.go    | 22 ++++++++++++++++++++++
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/builtin_object.go b/builtin_object.go
index b705b41..2bf01db 100644
--- a/builtin_object.go
+++ b/builtin_object.go
@@ -223,7 +223,7 @@ func builtinObject_freeze(call FunctionCall) Value {
 }
 
 func builtinObject_keys(call FunctionCall) Value {
-	if object, keys := call.Argument(0)._object(), []Value{}; nil != object {
+	if object, keys := call.Argument(0)._object(), []Value(nil); nil != object {
 		object.enumerate(false, func(name string) {
 			keys = append(keys, toValue(name))
 		})
@@ -231,3 +231,15 @@ func builtinObject_keys(call FunctionCall) Value {
 	}
 	panic(newTypeError())
 }
+
+func builtinObject_getOwnPropertyNames(call FunctionCall) Value {
+	if object, propertyNames := call.Argument(0)._object(), []Value(nil); nil != object {
+		object.enumerate(true, func(name string) {
+			if object.hasOwnProperty(name) {
+				propertyNames = append(propertyNames, toValue(name))
+			}
+		})
+		return toValue(call.runtime.newArrayOf(propertyNames))
+	}
+	panic(newTypeError())
+}
diff --git a/global.go b/global.go
index b5b4642..3569c3f 100644
--- a/global.go
+++ b/global.go
@@ -184,6 +184,7 @@ func newContext() *_runtime {
 		"isFrozen", -1, builtinObject_isFrozen,
 		"freeze", -1, builtinObject_freeze,
 		"keys", -1, builtinObject_keys,
+		"getOwnPropertyNames", -1, builtinObject_getOwnPropertyNames,
 	)
 
 	self.Global.Function = self.newGlobalFunction(
diff --git a/object_test.go b/object_test.go
index 490a8b8..a9d7e61 100644
--- a/object_test.go
+++ b/object_test.go
@@ -271,3 +271,25 @@ func TestObject_keys(t *testing.T) {
         })(undefined, undefined, undefined, undefined);
     `, "0,1,2,3")
 }
+
+func TestObject_getOwnPropertyNames(t *testing.T) {
+	Terst(t)
+
+	test := runTest()
+
+	test(`Object.getOwnPropertyNames({ abc:undefined, def:undefined })`, "abc,def")
+
+	test(`
+		var ghi = Object.create(
+            {
+                abc: undefined,
+                def: undefined
+            },
+            {
+                ghi: { value: undefined, enumerable: true },
+                jkl: { value: undefined, enumerable: false }
+		    }
+        );
+        Object.getOwnPropertyNames(ghi)
+    `, "ghi,jkl")
+}