Adding ElementsAccessor::Concat

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.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 504 matching lines @@
   for (var i = 0; i < m; i++) {
     array[i+n] = %_Arguments(i);
   }
 
   var new_length = n + m;
   array.length = new_length;
   return new_length;
 }
 
 
-// Returns an array containing the array elements of the object followed
-// by the array elements of each argument in order. See ECMA-262,
-// section 15.4.4.7.
-function ArrayConcatJS(arg1) {  // length == 1
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.concat");
-
-  var array = TO_OBJECT(this);
-  var arg_count = %_ArgumentsLength();
-  var arrays = new InternalArray(1 + arg_count);
-  arrays[0] = array;
-  for (var i = 0; i < arg_count; i++) {
-    arrays[i + 1] = %_Arguments(i);
-  }
-
-  return %ArrayConcat(arrays);
-}
-
-
 // For implementing reverse() on large, sparse arrays.
 function SparseReverse(array, len) {
   var keys = GetSortedArrayKeys(array, %GetArrayKeys(array, len));
   var high_counter = keys.length - 1;
   var low_counter = 0;
   while (low_counter <= high_counter) {
     var i = keys[low_counter];
     var j = keys[high_counter];
 
     var j_complement = len - j - 1;
@@ skipping 1082 matching lines @@
 // Set up non-enumerable functions of the Array.prototype object and
 // set their names.
 // Manipulate the length of some of the functions to meet
 // expectations set by ECMA-262 or Mozilla.
 utils.InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
   "toString", getFunction("toString", ArrayToString),
   "toLocaleString", getFunction("toLocaleString", ArrayToLocaleString),
   "join", getFunction("join", ArrayJoin),
   "pop", getFunction("pop", ArrayPop),
   "push", getFunction("push", ArrayPush, 1),
-  "concat", getFunction("concat", ArrayConcatJS, 1),
   "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),
   "forEach", getFunction("forEach", ArrayForEach, 1),
   "some", getFunction("some", ArraySome, 1),
   "every", getFunction("every", ArrayEvery, 1),
   "map", getFunction("map", ArrayMap, 1),
   "indexOf", getFunction("indexOf", ArrayIndexOf, 1),
   "lastIndexOf", getFunction("lastIndexOf", ArrayLastIndexOf, 1),
   "reduce", getFunction("reduce", ArrayReduce, 1),
   "reduceRight", getFunction("reduceRight", ArrayReduceRight, 1)
 ]);
 
 %FinishArrayPrototypeSetup(GlobalArray.prototype);
 
 // The internal Array prototype doesn't need to be fancy, since it's never
 // exposed to user code.
 // Adding only the functions that are actually used.
 utils.SetUpLockedPrototype(InternalArray, GlobalArray(), [
-  "concat", getFunction("concat", ArrayConcatJS),
   "indexOf", getFunction("indexOf", ArrayIndexOf),
   "join", getFunction("join", ArrayJoin),
   "pop", getFunction("pop", ArrayPop),
   "push", getFunction("push", ArrayPush),
   "shift", getFunction("shift", ArrayShift),
   "splice", getFunction("splice", ArraySplice)
 ]);
 
 utils.SetUpLockedPrototype(InternalPackedArray, GlobalArray(), [
   "join", getFunction("join", ArrayJoin),
@@ skipping 19 matching lines @@
   to.InnerArrayMap = InnerArrayMap;
   to.InnerArrayReduce = InnerArrayReduce;
   to.InnerArrayReduceRight = InnerArrayReduceRight;
   to.InnerArraySome = InnerArraySome;
   to.InnerArraySort = InnerArraySort;
   to.InnerArrayToLocaleString = InnerArrayToLocaleString;
   to.PackedArrayReverse = PackedArrayReverse;
 });
 
 %InstallToContext([
-  "array_concat", ArrayConcatJS,
   "array_pop", ArrayPop,
   "array_push", ArrayPush,
   "array_shift", ArrayShift,
   "array_splice", ArraySplice,
   "array_slice", ArraySlice,
   "array_unshift", ArrayUnshift,
 ]);
 
 });