[builtins] Implement Array.prototype.reduceRight in the CSA

src/js/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.
 
 (function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 1088 matching lines @@
     return -1;
   }
   for (var i = max; i >= min; i--) {
     if (IS_UNDEFINED(array[i]) && i in array) {
       return i;
     }
   }
   return -1;
 }
 
-function InnerArrayReduceRight(callback, current, array, length,
-                               argumentsLength) {
-  if (!IS_CALLABLE(callback)) {
-    throw %make_type_error(kCalledNonCallable, callback);
-  }
-
-  var i = length - 1;
-  find_initial: if (argumentsLength < 2) {
-    for (; i >= 0; i--) {
-      if (i in array) {
-        current = array[i--];
-        break find_initial;
-      }
-    }
-    throw %make_type_error(kReduceNoInitial);
-  }
-
-  for (; i >= 0; i--) {
-    if (i in array) {
-      var element = array[i];
-      current = callback(current, element, i, array);
-    }
-  }
-  return current;
-}
-
-
-function ArrayReduceRight(callback, current) {
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.reduceRight");
-
-  // Pull out the length so that side effects are visible before the
-  // callback function is checked.
-  var array = TO_OBJECT(this);
-  var length = TO_LENGTH(array.length);
-  return InnerArrayReduceRight(callback, current, array, length,
-                               arguments.length);
-}
-
-
 // ES#sec-array.prototype.copywithin
 // (Array.prototype.copyWithin ( target, start [ , end ] )
 function ArrayCopyWithin(target, start, end) {
   CHECK_OBJECT_COERCIBLE(this, "Array.prototype.copyWithin");
 
   var array = TO_OBJECT(this);
   var length = TO_LENGTH(array.length);
 
   target = TO_INTEGER(target);
   var to;
@@ skipping 260 matching lines @@
   "reverse", getFunction("reverse", ArrayReverse),
   "shift", getFunction("shift", ArrayShift),
   "unshift", getFunction("unshift", ArrayUnshift, 1),
   "slice", getFunction("slice", ArraySlice, 2),
   "splice", getFunction("splice", ArraySplice, 2),
   "sort", getFunction("sort", ArraySort),
   "filter", getFunction("filter", ArrayFilter, 1),
   "map", getFunction("map", ArrayMap, 1),
   "indexOf", getFunction("indexOf", null, 1),
   "lastIndexOf", getFunction("lastIndexOf", ArrayLastIndexOf, 1),
-  "reduceRight", getFunction("reduceRight", ArrayReduceRight, 1),
   "copyWithin", getFunction("copyWithin", ArrayCopyWithin, 2),
   "find", getFunction("find", ArrayFind, 1),
   "findIndex", getFunction("findIndex", ArrayFindIndex, 1),
   "fill", getFunction("fill", ArrayFill, 1),
   "includes", getFunction("includes", null, 1),
   "entries", IteratorFunctions.entries,
   "keys", IteratorFunctions.keys,
   iteratorSymbol, IteratorFunctions.values
 ]);
 
@@ skipping 38 matching lines @@
 utils.Export(function(to) {
   to.ArrayFrom = ArrayFrom;
   to.ArrayJoin = ArrayJoin;
   to.ArrayPush = ArrayPush;
   to.ArrayToString = ArrayToString;
   to.ArrayValues = IteratorFunctions.values,
   to.InnerArrayFilter = InnerArrayFilter;
   to.InnerArrayFind = InnerArrayFind;
   to.InnerArrayFindIndex = InnerArrayFindIndex;
   to.InnerArrayJoin = InnerArrayJoin;
-  to.InnerArrayReduceRight = InnerArrayReduceRight;
   to.InnerArraySort = InnerArraySort;
   to.InnerArrayToLocaleString = InnerArrayToLocaleString;
   to.PackedArrayReverse = PackedArrayReverse;
 });
 
 %InstallToContext([
   "array_entries_iterator", IteratorFunctions.entries,
   "array_keys_iterator", IteratorFunctions.keys,
   "array_pop", ArrayPop,
   "array_push", ArrayPush,
   "array_shift", ArrayShift,
   "array_splice", ArraySplice,
   "array_slice", ArraySlice,
   "array_unshift", ArrayUnshift,
   "array_values_iterator", IteratorFunctions.values,
 ]);
 
 });