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

src/harmony-typedarray.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 41 matching lines @@
   InnerArrayCopyWithin = from.InnerArrayCopyWithin;
   InnerArrayEvery = from.InnerArrayEvery;
   InnerArrayFill = from.InnerArrayFill;
   InnerArrayFilter = from.InnerArrayFilter;
   InnerArrayFind = from.InnerArrayFind;
   InnerArrayFindIndex = from.InnerArrayFindIndex;
   InnerArrayForEach = from.InnerArrayForEach;
   InnerArrayIndexOf = from.InnerArrayIndexOf;
   InnerArrayLastIndexOf = from.InnerArrayLastIndexOf;
   InnerArrayMap = from.InnerArrayMap;
+  InnerArrayReduce = from.InnerArrayReduce;
+  InnerArrayReduceRight = from.InnerArrayReduceRight;
   InnerArrayReverse = from.InnerArrayReverse;
   InnerArraySome = from.InnerArraySome;
   InnerArraySort = from.InnerArraySort;
   IsNaN = from.IsNaN;
 });
 
 // -------------------------------------------------------------------
 
 function ConstructTypedArray(constructor, array) {
   // TODO(littledan): This is an approximation of the spec, which requires
@@ skipping 171 matching lines @@
 function TypedArraySome(f, receiver) {
   if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
 
   var length = %_TypedArrayGetLength(this);
 
   return InnerArraySome(f, receiver, this, length);
 }
 %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();
   var array = new this(length);
   for (var i = 0; i < length; i++) {
     array[i] = %_Arguments(i);
   }
   return array;
 }
 
@@ skipping 19 matching lines @@
     "copyWithin", TypedArrayCopyWithin,
     "every", TypedArrayEvery,
     "fill", TypedArrayFill,
     "filter", TypedArrayFilter,
     "find", TypedArrayFind,
     "findIndex", TypedArrayFindIndex,
     "indexOf", TypedArrayIndexOf,
     "lastIndexOf", TypedArrayLastIndexOf,
     "forEach", TypedArrayForEach,
     "map", TypedArrayMap,
+    "reduce", TypedArrayReduce,
+    "reduceRight", TypedArrayReduceRight,
     "reverse", TypedArrayReverse,
     "some", TypedArraySome,
     "sort", TypedArraySort
   ]);
 endmacro
 
 TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
 
 })