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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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632 } | 632 } |
633 | 633 |
634 static Handle<JSArray> SpliceImpl(Handle<JSArray> receiver, | 634 static Handle<JSArray> SpliceImpl(Handle<JSArray> receiver, |
635 Handle<FixedArrayBase> backing_store, | 635 Handle<FixedArrayBase> backing_store, |
636 uint32_t start, uint32_t delete_count, | 636 uint32_t start, uint32_t delete_count, |
637 Arguments args, uint32_t add_count) { | 637 Arguments args, uint32_t add_count) { |
638 UNREACHABLE(); | 638 UNREACHABLE(); |
639 return Handle<JSArray>(); | 639 return Handle<JSArray>(); |
640 } | 640 } |
641 | 641 |
| 642 virtual Handle<Object> Pop(Handle<JSArray> receiver, |
| 643 Handle<FixedArrayBase> backing_store) final { |
| 644 return ElementsAccessorSubclass::PopImpl(receiver, backing_store); |
| 645 } |
| 646 |
| 647 static Handle<Object> PopImpl(Handle<JSArray> receiver, |
| 648 Handle<FixedArrayBase> backing_store) { |
| 649 UNREACHABLE(); |
| 650 return Handle<Object>(); |
| 651 } |
642 | 652 |
643 virtual void SetLength(Handle<JSArray> array, uint32_t length) final { | 653 virtual void SetLength(Handle<JSArray> array, uint32_t length) final { |
644 ElementsAccessorSubclass::SetLengthImpl(array, length, | 654 ElementsAccessorSubclass::SetLengthImpl(array, length, |
645 handle(array->elements())); | 655 handle(array->elements())); |
646 } | 656 } |
647 | 657 |
648 static void SetLengthImpl(Handle<JSArray> array, uint32_t length, | 658 static void SetLengthImpl(Handle<JSArray> array, uint32_t length, |
649 Handle<FixedArrayBase> backing_store); | 659 Handle<FixedArrayBase> backing_store); |
650 | 660 |
651 static Handle<FixedArrayBase> ConvertElementsWithCapacity( | 661 static Handle<FixedArrayBase> ConvertElementsWithCapacity( |
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1212 if (IsFastSmiElementsKind(KindTraits::Kind)) { | 1222 if (IsFastSmiElementsKind(KindTraits::Kind)) { |
1213 for (int i = 0; i < length; i++) { | 1223 for (int i = 0; i < length; i++) { |
1214 DCHECK(BackingStore::get(backing_store, i)->IsSmi() || | 1224 DCHECK(BackingStore::get(backing_store, i)->IsSmi() || |
1215 (IsFastHoleyElementsKind(KindTraits::Kind) && | 1225 (IsFastHoleyElementsKind(KindTraits::Kind) && |
1216 backing_store->is_the_hole(i))); | 1226 backing_store->is_the_hole(i))); |
1217 } | 1227 } |
1218 } | 1228 } |
1219 #endif | 1229 #endif |
1220 } | 1230 } |
1221 | 1231 |
| 1232 static Handle<Object> PopImpl(Handle<JSArray> receiver, |
| 1233 Handle<FixedArrayBase> backing_store) { |
| 1234 uint32_t new_length = |
| 1235 static_cast<uint32_t>(Smi::cast(receiver->length())->value()) - 1; |
| 1236 Handle<Object> result = |
| 1237 FastElementsAccessorSubclass::GetImpl(backing_store, new_length); |
| 1238 FastElementsAccessorSubclass::SetLengthImpl(receiver, new_length, |
| 1239 backing_store); |
| 1240 |
| 1241 if (IsHoleyElementsKind(KindTraits::Kind) && result->IsTheHole()) { |
| 1242 result = receiver->GetIsolate()->factory()->undefined_value(); |
| 1243 } |
| 1244 return result; |
| 1245 } |
| 1246 |
1222 static uint32_t PushImpl(Handle<JSArray> receiver, | 1247 static uint32_t PushImpl(Handle<JSArray> receiver, |
1223 Handle<FixedArrayBase> backing_store, | 1248 Handle<FixedArrayBase> backing_store, |
1224 Object** objects, uint32_t push_size, | 1249 Object** objects, uint32_t push_size, |
1225 int direction) { | 1250 int direction) { |
1226 uint32_t len = Smi::cast(receiver->length())->value(); | 1251 uint32_t len = Smi::cast(receiver->length())->value(); |
1227 if (push_size == 0) { | 1252 if (push_size == 0) { |
1228 return len; | 1253 return len; |
1229 } | 1254 } |
1230 uint32_t elms_len = backing_store->length(); | 1255 uint32_t elms_len = backing_store->length(); |
1231 // Currently fixed arrays cannot grow too big, so | 1256 // Currently fixed arrays cannot grow too big, so |
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2196 #define ACCESSOR_DELETE(Class, Kind, Store) delete elements_accessors_[Kind]; | 2221 #define ACCESSOR_DELETE(Class, Kind, Store) delete elements_accessors_[Kind]; |
2197 ELEMENTS_LIST(ACCESSOR_DELETE) | 2222 ELEMENTS_LIST(ACCESSOR_DELETE) |
2198 #undef ACCESSOR_DELETE | 2223 #undef ACCESSOR_DELETE |
2199 elements_accessors_ = NULL; | 2224 elements_accessors_ = NULL; |
2200 } | 2225 } |
2201 | 2226 |
2202 | 2227 |
2203 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL; | 2228 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL; |
2204 } // namespace internal | 2229 } // namespace internal |
2205 } // namespace v8 | 2230 } // namespace v8 |
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