Implement ES6 Array.of()

src/harmony-array.js

Index: src/harmony-array.js
diff --git a/src/harmony-array.js b/src/harmony-array.js
index dbcb292a0876842e8d3a6d4c0d21d997cdf6d977..9893e8728ae32c883a33a56c594bc9768ca97464 100644
--- a/src/harmony-array.js
+++ b/src/harmony-array.js
@@ -123,11 +123,32 @@ function ArrayFill(value /* [, start [, end ] ] */) {  // length == 1
   return array;
 }
 
+// ES6, draft 05-22-14, section 22.1.2.3
+function ArrayOf() {
+    var len = %_ArgumentsLength();
+    var C = this;
+    if (%IsConstructor(C)) {
+        var A = new C(len);
+    } else {
+        var A = [];
+    }
+    for (var k = 0; k < len; k++) {
+        %AddProperty(A, k, %_Arguments(k), DONT_ENUM);

[caitp (gmail), 2014/07/07 16:52:09]

Should this not be enumerable? I don't see anything in CreateDataPropertyOrThrow
that says this shouldn't be enumerable

+    }
+    A.length = len;
+    return A;
+}
+
 // -------------------------------------------------------------------
 
 function HarmonyArrayExtendArrayPrototype() {
   %CheckIsBootstrapping();
 
+  // Set up non-enumerable functions on the Array object.
+  InstallFunctions($Array, DONT_ENUM, $Array(
+    "of", ArrayOf
+  ));
+
   // Set up the non-enumerable functions on the Array prototype object.
   InstallFunctions($Array.prototype, DONT_ENUM, $Array(
     "find", ArrayFind,