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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. | 
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 (function(global, utils) { | 5 (function(global, utils) { | 
| 6 | 6 | 
| 7 "use strict"; | 7 "use strict"; | 
| 8 | 8 | 
| 9 %CheckIsBootstrapping(); | 9 %CheckIsBootstrapping(); | 
| 10 | 10 | 
| 11 // ------------------------------------------------------------------- | 11 // ------------------------------------------------------------------- | 
| 12 // Imports | 12 // Imports | 
| 13 | 13 | 
| 14 var Delete; | 14 var Delete; | 
| 15 var GlobalArray = global.Array; | 15 var GlobalArray = global.Array; | 
| 16 var InternalArray = utils.InternalArray; | 16 var InternalArray = utils.InternalArray; | 
| 17 var InternalPackedArray = utils.InternalPackedArray; | 17 var InternalPackedArray = utils.InternalPackedArray; | 
|  | 18 var MathMin; | 
| 18 var ObjectHasOwnProperty; | 19 var ObjectHasOwnProperty; | 
| 19 var ObjectIsFrozen; | 20 var ObjectIsFrozen; | 
| 20 var ObjectIsSealed; | 21 var ObjectIsSealed; | 
| 21 var ObjectToString; | 22 var ObjectToString; | 
| 22 var unscopablesSymbol = utils.ImportNow("unscopables_symbol"); | 23 var unscopablesSymbol = utils.ImportNow("unscopables_symbol"); | 
| 23 | 24 | 
| 24 utils.Import(function(from) { | 25 utils.Import(function(from) { | 
| 25   Delete = from.Delete; | 26   Delete = from.Delete; | 
|  | 27   MathMin = from.MathMin; | 
| 26   ObjectHasOwnProperty = from.ObjectHasOwnProperty; | 28   ObjectHasOwnProperty = from.ObjectHasOwnProperty; | 
| 27   ObjectIsFrozen = from.ObjectIsFrozen; | 29   ObjectIsFrozen = from.ObjectIsFrozen; | 
| 28   ObjectIsSealed = from.ObjectIsSealed; | 30   ObjectIsSealed = from.ObjectIsSealed; | 
| 29   ObjectToString = from.ObjectToString; | 31   ObjectToString = from.ObjectToString; | 
| 30 }); | 32 }); | 
| 31 | 33 | 
| 32 // ------------------------------------------------------------------- | 34 // ------------------------------------------------------------------- | 
| 33 | 35 | 
| 34 // Global list of arrays visited during toString, toLocaleString and | 36 // Global list of arrays visited during toString, toLocaleString and | 
| 35 // join invocations. | 37 // join invocations. | 
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| 255 | 257 | 
| 256 | 258 | 
| 257 // This function implements the optimized splice implementation that can use | 259 // This function implements the optimized splice implementation that can use | 
| 258 // special array operations to handle sparse arrays in a sensible fashion. | 260 // special array operations to handle sparse arrays in a sensible fashion. | 
| 259 function SparseMove(array, start_i, del_count, len, num_additional_args) { | 261 function SparseMove(array, start_i, del_count, len, num_additional_args) { | 
| 260   // Bail out if no moving is necessary. | 262   // Bail out if no moving is necessary. | 
| 261   if (num_additional_args === del_count) return; | 263   if (num_additional_args === del_count) return; | 
| 262   // Move data to new array. | 264   // Move data to new array. | 
| 263   var new_array = new InternalArray( | 265   var new_array = new InternalArray( | 
| 264       // Clamp array length to 2^32-1 to avoid early RangeError. | 266       // Clamp array length to 2^32-1 to avoid early RangeError. | 
| 265       MIN_SIMPLE(len - del_count + num_additional_args, 0xffffffff)); | 267       MathMin(len - del_count + num_additional_args, 0xffffffff)); | 
| 266   var big_indices; | 268   var big_indices; | 
| 267   var indices = %GetArrayKeys(array, len); | 269   var indices = %GetArrayKeys(array, len); | 
| 268   if (IS_NUMBER(indices)) { | 270   if (IS_NUMBER(indices)) { | 
| 269     var limit = indices; | 271     var limit = indices; | 
| 270     for (var i = 0; i < start_i && i < limit; ++i) { | 272     for (var i = 0; i < start_i && i < limit; ++i) { | 
| 271       var current = array[i]; | 273       var current = array[i]; | 
| 272       if (!IS_UNDEFINED(current) || i in array) { | 274       if (!IS_UNDEFINED(current) || i in array) { | 
| 273         new_array[i] = current; | 275         new_array[i] = current; | 
| 274       } | 276       } | 
| 275     } | 277     } | 
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| 1652 %InstallToContext([ | 1654 %InstallToContext([ | 
| 1653   "array_pop", ArrayPop, | 1655   "array_pop", ArrayPop, | 
| 1654   "array_push", ArrayPush, | 1656   "array_push", ArrayPush, | 
| 1655   "array_shift", ArrayShift, | 1657   "array_shift", ArrayShift, | 
| 1656   "array_splice", ArraySplice, | 1658   "array_splice", ArraySplice, | 
| 1657   "array_slice", ArraySlice, | 1659   "array_slice", ArraySlice, | 
| 1658   "array_unshift", ArrayUnshift, | 1660   "array_unshift", ArrayUnshift, | 
| 1659 ]); | 1661 ]); | 
| 1660 | 1662 | 
| 1661 }); | 1663 }); | 
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