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 69512ca4b58c1d4b4512db68ea94defef4bcb83e..3968aec84674c57ec46af3388b3fb0109cb2598f 100644
--- a/src/harmony-typedarray.js
+++ b/src/harmony-typedarray.js
@@ -64,6 +64,8 @@ utils.Import(function(from) {
   InnerArrayJoin = from.InnerArrayJoin;
   InnerArrayLastIndexOf = from.InnerArrayLastIndexOf;
   InnerArrayMap = from.InnerArrayMap;
+  InnerArrayReduce = from.InnerArrayReduce;
+  InnerArrayReduceRight = from.InnerArrayReduceRight;
   InnerArrayReverse = from.InnerArrayReverse;
   InnerArraySome = from.InnerArraySome;
   InnerArraySort = from.InnerArraySort;
@@ -265,11 +267,13 @@ function TypedArrayToLocaleString() {
   return InnerArrayToLocaleString(this, length);
 }
 
+
 // ES6 section 22.2.3.28
 function TypedArrayToString() {
   return %_CallFunction(this, ArrayToString);
 }
 
+
 // ES6 section 22.2.3.14
 function TypedArrayJoin(separator) {
   if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
@@ -280,6 +284,28 @@ function TypedArrayJoin(separator) {
 }
 
 
+// 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();
@@ -320,6 +346,8 @@ macro EXTEND_TYPED_ARRAY(NAME)
     "lastIndexOf", TypedArrayLastIndexOf,
     "forEach", TypedArrayForEach,
     "map", TypedArrayMap,
+    "reduce", TypedArrayReduce,
+    "reduceRight", TypedArrayReduceRight,
     "reverse", TypedArrayReverse,
     "some", TypedArraySome,
     "sort", TypedArraySort,