Implement %TypedArray%.prototype.{reduce,reduceRight}

src/harmony-typedarray.js

Index: src/harmony-typedarray.js
diff --git a/src/harmony-typedarray.js b/src/harmony-typedarray.js
index 88048b44c9e854cb5d57856b8abf86a4a3694a97..c7a4ffef792b2abde4a00b01b9da937b9d13480f 100644
--- a/src/harmony-typedarray.js
+++ b/src/harmony-typedarray.js
@@ -59,6 +59,8 @@ utils.Import(function(from) {
   InnerArrayIndexOf = from.InnerArrayIndexOf;
   InnerArrayLastIndexOf = from.InnerArrayLastIndexOf;
   InnerArrayMap = from.InnerArrayMap;
+  InnerArrayReduce = from.InnerArrayReduce;
+  InnerArrayReduceRight = from.InnerArrayReduceRight;
   InnerArrayReverse = from.InnerArrayReverse;
   InnerArraySome = from.InnerArraySome;
   InnerArraySort = from.InnerArraySort;
@@ -250,6 +252,28 @@ function TypedArraySome(f, receiver) {
 %FunctionSetLength(TypedArraySome, 1);
 
 
+// ES6 draft 07-15-13, section 22.2.3.19
+function TypedArrayReduce(callback, current) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+  return InnerArrayReduce(callback, current, this, length,
+                          %_ArgumentsLength());
+}
+%FunctionSetLength(TypedArrayReduce, 1);
+
+
+// ES6 draft 07-15-13, section 22.2.3.19
+function TypedArrayReduceRight(callback, current) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+  return InnerArrayReduceRight(callback, current, this, length,
+                               %_ArgumentsLength());
+}
+%FunctionSetLength(TypedArrayReduceRight, 1);
+
+
 // ES6 draft 08-24-14, section 22.2.2.2
 function TypedArrayOf() {
   var length = %_ArgumentsLength();
@@ -289,6 +313,8 @@ macro EXTEND_TYPED_ARRAY(NAME)
     "lastIndexOf", TypedArrayLastIndexOf,
     "forEach", TypedArrayForEach,
     "map", TypedArrayMap,
+    "reduce", TypedArrayReduce,
+    "reduceRight", TypedArrayReduceRight,
     "reverse", TypedArrayReverse,
     "some", TypedArraySome,
     "sort", TypedArraySort