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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; | |
19 var ObjectHasOwnProperty; | 18 var ObjectHasOwnProperty; |
20 var ObjectIsFrozen; | 19 var ObjectIsFrozen; |
21 var ObjectIsSealed; | 20 var ObjectIsSealed; |
22 var ObjectToString; | 21 var ObjectToString; |
23 var ToNumber; | 22 var ToNumber; |
24 var ToString; | 23 var ToString; |
25 var unscopablesSymbol = utils.ImportNow("unscopables_symbol"); | 24 var unscopablesSymbol = utils.ImportNow("unscopables_symbol"); |
26 | 25 |
27 utils.Import(function(from) { | 26 utils.Import(function(from) { |
28 Delete = from.Delete; | 27 Delete = from.Delete; |
29 MathMin = from.MathMin; | |
30 ObjectHasOwnProperty = from.ObjectHasOwnProperty; | 28 ObjectHasOwnProperty = from.ObjectHasOwnProperty; |
31 ObjectIsFrozen = from.ObjectIsFrozen; | 29 ObjectIsFrozen = from.ObjectIsFrozen; |
32 ObjectIsSealed = from.ObjectIsSealed; | 30 ObjectIsSealed = from.ObjectIsSealed; |
33 ObjectToString = from.ObjectToString; | 31 ObjectToString = from.ObjectToString; |
34 ToNumber = from.ToNumber; | 32 ToNumber = from.ToNumber; |
35 ToString = from.ToString; | 33 ToString = from.ToString; |
36 }); | 34 }); |
37 | 35 |
38 // ------------------------------------------------------------------- | 36 // ------------------------------------------------------------------- |
39 | 37 |
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260 | 258 |
261 | 259 |
262 // This function implements the optimized splice implementation that can use | 260 // This function implements the optimized splice implementation that can use |
263 // special array operations to handle sparse arrays in a sensible fashion. | 261 // special array operations to handle sparse arrays in a sensible fashion. |
264 function SparseMove(array, start_i, del_count, len, num_additional_args) { | 262 function SparseMove(array, start_i, del_count, len, num_additional_args) { |
265 // Bail out if no moving is necessary. | 263 // Bail out if no moving is necessary. |
266 if (num_additional_args === del_count) return; | 264 if (num_additional_args === del_count) return; |
267 // Move data to new array. | 265 // Move data to new array. |
268 var new_array = new InternalArray( | 266 var new_array = new InternalArray( |
269 // Clamp array length to 2^32-1 to avoid early RangeError. | 267 // Clamp array length to 2^32-1 to avoid early RangeError. |
270 MathMin(len - del_count + num_additional_args, 0xffffffff)); | 268 MIN_SIMPLE(len - del_count + num_additional_args, 0xffffffff)); |
271 var big_indices; | 269 var big_indices; |
272 var indices = %GetArrayKeys(array, len); | 270 var indices = %GetArrayKeys(array, len); |
273 if (IS_NUMBER(indices)) { | 271 if (IS_NUMBER(indices)) { |
274 var limit = indices; | 272 var limit = indices; |
275 for (var i = 0; i < start_i && i < limit; ++i) { | 273 for (var i = 0; i < start_i && i < limit; ++i) { |
276 var current = array[i]; | 274 var current = array[i]; |
277 if (!IS_UNDEFINED(current) || i in array) { | 275 if (!IS_UNDEFINED(current) || i in array) { |
278 new_array[i] = current; | 276 new_array[i] = current; |
279 } | 277 } |
280 } | 278 } |
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1658 %InstallToContext([ | 1656 %InstallToContext([ |
1659 "array_pop", ArrayPop, | 1657 "array_pop", ArrayPop, |
1660 "array_push", ArrayPush, | 1658 "array_push", ArrayPush, |
1661 "array_shift", ArrayShift, | 1659 "array_shift", ArrayShift, |
1662 "array_splice", ArraySplice, | 1660 "array_splice", ArraySplice, |
1663 "array_slice", ArraySlice, | 1661 "array_slice", ArraySlice, |
1664 "array_unshift", ArrayUnshift, | 1662 "array_unshift", ArrayUnshift, |
1665 ]); | 1663 ]); |
1666 | 1664 |
1667 }); | 1665 }); |
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