Implement for-in loop for proxies.

src/v8natives.js

Index: src/v8natives.js
diff --git a/src/v8natives.js b/src/v8natives.js
index 3c48264d4c2ef6f3301afa6e3b57128af6c76952..a5698e944eac3828425ff7c96095be21c1a9579c 100644
--- a/src/v8natives.js
+++ b/src/v8natives.js
@@ -884,14 +884,14 @@ function ToStringArray(obj, trap) {
   }
   var n = ToUint32(obj.length);
   var array = new $Array(n);
-  var names = {}
+  var names = {}  // TODO(rossberg): use sets once they are ready.

[Rico, 2011/10/20 14:25:31]

Please file bug

   for (var index = 0; index < n; index++) {
     var s = ToString(obj[index]);
     if (s in names) {
       throw MakeTypeError("proxy_repeated_prop_name", [obj, trap, s])
     }
     array[index] = s;
-    names.s = 0;
+    names[s] = 0;
   }
   return array;
 }
@@ -1010,6 +1010,7 @@ function ObjectDefineProperty(obj, p, attributes) {
 
 
 function GetOwnEnumerablePropertyNames(properties) {
+  global.print("GetOwnEnumerablePropertyNames");

[Rico, 2011/10/20 14:25:31]

Debug print?

[rossberg, 2011/10/24 13:31:35]

Oops.

   var names = new InternalArray();
   for (var key in properties) {
     if (%HasLocalProperty(properties, key)) {