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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 "use strict"; | 5 "use strict"; |
6 | 6 |
7 // This file relies on the fact that the following declarations have been made | 7 // This file relies on the fact that the following declarations have been made |
8 // in runtime.js: | 8 // in runtime.js: |
9 // var $Array = global.Array; | 9 // var $Array = global.Array; |
10 | 10 |
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233 | 233 |
234 | 234 |
235 // This function implements the optimized splice implementation that can use | 235 // This function implements the optimized splice implementation that can use |
236 // special array operations to handle sparse arrays in a sensible fashion. | 236 // special array operations to handle sparse arrays in a sensible fashion. |
237 function SparseMove(array, start_i, del_count, len, num_additional_args) { | 237 function SparseMove(array, start_i, del_count, len, num_additional_args) { |
238 // Bail out if no moving is necessary. | 238 // Bail out if no moving is necessary. |
239 if (num_additional_args === del_count) return; | 239 if (num_additional_args === del_count) return; |
240 // Move data to new array. | 240 // Move data to new array. |
241 var new_array = new InternalArray( | 241 var new_array = new InternalArray( |
242 // Clamp array length to 2^32-1 to avoid early RangeError. | 242 // Clamp array length to 2^32-1 to avoid early RangeError. |
243 MathMin(len - del_count + num_additional_args, 0xffffffff)); | 243 $min(len - del_count + num_additional_args, 0xffffffff)); |
244 var big_indices; | 244 var big_indices; |
245 var indices = %GetArrayKeys(array, len); | 245 var indices = %GetArrayKeys(array, len); |
246 if (IS_NUMBER(indices)) { | 246 if (IS_NUMBER(indices)) { |
247 var limit = indices; | 247 var limit = indices; |
248 for (var i = 0; i < start_i && i < limit; ++i) { | 248 for (var i = 0; i < start_i && i < limit; ++i) { |
249 var current = array[i]; | 249 var current = array[i]; |
250 if (!IS_UNDEFINED(current) || i in array) { | 250 if (!IS_UNDEFINED(current) || i in array) { |
251 new_array[i] = current; | 251 new_array[i] = current; |
252 } | 252 } |
253 } | 253 } |
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1581 )); | 1581 )); |
1582 | 1582 |
1583 SetUpLockedPrototype(InternalPackedArray, $Array(), $Array( | 1583 SetUpLockedPrototype(InternalPackedArray, $Array(), $Array( |
1584 "join", getFunction("join", ArrayJoin), | 1584 "join", getFunction("join", ArrayJoin), |
1585 "pop", getFunction("pop", ArrayPop), | 1585 "pop", getFunction("pop", ArrayPop), |
1586 "push", getFunction("push", ArrayPush) | 1586 "push", getFunction("push", ArrayPush) |
1587 )); | 1587 )); |
1588 } | 1588 } |
1589 | 1589 |
1590 SetUpArray(); | 1590 SetUpArray(); |
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