Implement %TypedArray%.reverse

src/array.js

 // Copyright 2012 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.
 
 var $arrayConcat;
 var $arrayJoin;
 var $arrayPush;
 var $arrayPop;
 var $arrayShift;
 var $arraySlice;
 var $arraySplice;
 var $arrayUnshift;
 var $innerArrayForEach;
 var $innerArrayEvery;
+var $innerArrayReverse;
 
 (function(global, shared, exports) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
@@ skipping 532 matching lines @@
       var current_j = array[high];
       if (!IS_UNDEFINED(current_j) || high in array) {
         array[low] = current_j;
         delete array[high];
       }
     }
   }
 }
 
 
-function ArrayReverse() {
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reverse");
-
-  var array = TO_OBJECT_INLINE(this);
-  var len = TO_UINT32(array.length);
-
-  if (UseSparseVariant(array, len, IS_ARRAY(array), len)) {
-    %NormalizeElements(array);
-    SparseReverse(array, len);
-    return array;
-  }
-
+function InnerArrayReverse(array, len) {
   var j = len - 1;
   for (var i = 0; i < j; i++, j--) {
     var current_i = array[i];
     if (!IS_UNDEFINED(current_i) || i in array) {
       var current_j = array[j];
       if (!IS_UNDEFINED(current_j) || j in array) {
         array[i] = current_j;
         array[j] = current_i;
       } else {
         array[j] = current_i;
         delete array[i];
       }
     } else {
       var current_j = array[j];
       if (!IS_UNDEFINED(current_j) || j in array) {
         array[i] = current_j;
         delete array[j];
       }
     }
   }
   return array;
 }
 
 
+function ArrayReverse() {
+  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reverse");
+
+  var array = TO_OBJECT_INLINE(this);
+  var len = TO_UINT32(array.length);
+
+  if (UseSparseVariant(array, len, IS_ARRAY(array), len)) {
+    %NormalizeElements(array);
+    SparseReverse(array, len);
+    return array;
+  }
+
+  return InnerArrayReverse(array, len);
+}
+
+
 function ObservedArrayShift(len) {
   var first = this[0];
 
   try {
     $observeBeginPerformSplice(this);
     SimpleMove(this, 0, 1, len, 0);
     this.length = len - 1;
   } finally {
     $observeEndPerformSplice(this);
     $observeEnqueueSpliceRecord(this, 0, [first], 0);
@@ skipping 989 matching lines @@
 $arrayJoin = ArrayJoin;
 $arrayPush = ArrayPush;
 $arrayPop = ArrayPop;
 $arrayShift = ArrayShift;
 $arraySlice = ArraySlice;
 $arraySplice = ArraySplice;
 $arrayUnshift = ArrayUnshift;
 
 $innerArrayForEach = InnerArrayForEach;
 $innerArrayEvery = InnerArrayEvery;
+$innerArrayReverse = InnerArrayReverse;
 
 });