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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/isolate-inl.h" | 10 #include "src/isolate-inl.h" |
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1963 if (new_length <= static_cast<uint32_t>(receiver->elements()->length()) && | 1963 if (new_length <= static_cast<uint32_t>(receiver->elements()->length()) && |
1964 IsFastSmiOrObjectElementsKind(kind)) { | 1964 IsFastSmiOrObjectElementsKind(kind)) { |
1965 HandleScope scope(isolate); | 1965 HandleScope scope(isolate); |
1966 JSObject::EnsureWritableFastElements(receiver); | 1966 JSObject::EnsureWritableFastElements(receiver); |
1967 } | 1967 } |
1968 | 1968 |
1969 Handle<FixedArrayBase> backing_store(receiver->elements(), isolate); | 1969 Handle<FixedArrayBase> backing_store(receiver->elements(), isolate); |
1970 | 1970 |
1971 if (new_length == 0) { | 1971 if (new_length == 0) { |
1972 receiver->set_elements(heap->empty_fixed_array()); | 1972 receiver->set_elements(heap->empty_fixed_array()); |
1973 receiver->set_length(Smi::kZero); | 1973 receiver->set_length(Smi::FromInt(0)); |
1974 return isolate->factory()->NewJSArrayWithElements( | 1974 return isolate->factory()->NewJSArrayWithElements( |
1975 backing_store, KindTraits::Kind, delete_count); | 1975 backing_store, KindTraits::Kind, delete_count); |
1976 } | 1976 } |
1977 | 1977 |
1978 // Construct the result array which holds the deleted elements. | 1978 // Construct the result array which holds the deleted elements. |
1979 Handle<JSArray> deleted_elements = isolate->factory()->NewJSArray( | 1979 Handle<JSArray> deleted_elements = isolate->factory()->NewJSArray( |
1980 KindTraits::Kind, delete_count, delete_count); | 1980 KindTraits::Kind, delete_count, delete_count); |
1981 if (delete_count > 0) { | 1981 if (delete_count > 0) { |
1982 DisallowHeapAllocation no_gc; | 1982 DisallowHeapAllocation no_gc; |
1983 Subclass::CopyElementsImpl(*backing_store, start, | 1983 Subclass::CopyElementsImpl(*backing_store, start, |
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3735 insertion_index += len; | 3735 insertion_index += len; |
3736 } | 3736 } |
3737 | 3737 |
3738 DCHECK_EQ(insertion_index, result_len); | 3738 DCHECK_EQ(insertion_index, result_len); |
3739 return result_array; | 3739 return result_array; |
3740 } | 3740 } |
3741 | 3741 |
3742 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL; | 3742 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL; |
3743 } // namespace internal | 3743 } // namespace internal |
3744 } // namespace v8 | 3744 } // namespace v8 |
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