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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 #include "src/elements.h" | 5 #include "src/elements.h" |
| 6 | 6 |
| 7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
| 8 #include "src/conversions.h" | 8 #include "src/conversions.h" |
| 9 #include "src/factory.h" | 9 #include "src/factory.h" |
| 10 #include "src/messages.h" | 10 #include "src/messages.h" |
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| 2163 return array; | 2163 return array; |
| 2164 | 2164 |
| 2165 } else if (args->length() == 1 && args->at<Object>(0)->IsNumber()) { | 2165 } else if (args->length() == 1 && args->at<Object>(0)->IsNumber()) { |
| 2166 uint32_t length; | 2166 uint32_t length; |
| 2167 if (!args->at<Object>(0)->ToArrayLength(&length)) { | 2167 if (!args->at<Object>(0)->ToArrayLength(&length)) { |
| 2168 return ThrowArrayLengthRangeError(array->GetIsolate()); | 2168 return ThrowArrayLengthRangeError(array->GetIsolate()); |
| 2169 } | 2169 } |
| 2170 | 2170 |
| 2171 // Optimize the case where there is one argument and the argument is a small | 2171 // Optimize the case where there is one argument and the argument is a small |
| 2172 // smi. | 2172 // smi. |
| 2173 if (length > 0 && length < JSObject::kInitialMaxFastElementArray) { | 2173 if (length > 0 && length < JSArray::kInitialMaxFastElementArray) { |
| 2174 ElementsKind elements_kind = array->GetElementsKind(); | 2174 ElementsKind elements_kind = array->GetElementsKind(); |
| 2175 JSArray::Initialize(array, length, length); | 2175 JSArray::Initialize(array, length, length); |
| 2176 | 2176 |
| 2177 if (!IsFastHoleyElementsKind(elements_kind)) { | 2177 if (!IsFastHoleyElementsKind(elements_kind)) { |
| 2178 elements_kind = GetHoleyElementsKind(elements_kind); | 2178 elements_kind = GetHoleyElementsKind(elements_kind); |
| 2179 JSObject::TransitionElementsKind(array, elements_kind); | 2179 JSObject::TransitionElementsKind(array, elements_kind); |
| 2180 } | 2180 } |
| 2181 } else if (length == 0) { | 2181 } else if (length == 0) { |
| 2182 JSArray::Initialize(array, JSArray::kPreallocatedArrayElements); | 2182 JSArray::Initialize(array, JSArray::kPreallocatedArrayElements); |
| 2183 } else { | 2183 } else { |
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| 2326 } | 2326 } |
| 2327 } | 2327 } |
| 2328 | 2328 |
| 2329 DCHECK(j == result_len); | 2329 DCHECK(j == result_len); |
| 2330 return result_array; | 2330 return result_array; |
| 2331 } | 2331 } |
| 2332 | 2332 |
| 2333 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL; | 2333 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL; |
| 2334 } // namespace internal | 2334 } // namespace internal |
| 2335 } // namespace v8 | 2335 } // namespace v8 |
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