1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ecmascript/weak_vector.h"
17
18 #include "ecmascript/object_factory.h"
19
20 namespace panda::ecmascript {
Create(const JSThread * thread,uint32_t capacity)21 JSHandle<WeakVector> WeakVector::Create(const JSThread *thread, uint32_t capacity)
22 {
23 ASSERT(capacity < MAX_VECTOR_INDEX);
24
25 uint32_t length = VectorToArrayIndex(capacity);
26 JSHandle<WeakVector> vector = JSHandle<WeakVector>(thread->GetEcmaVM()->GetFactory()->NewTaggedArray(length));
27
28 vector->SetEnd(thread, 0);
29 return vector;
30 }
31
Delete(const JSThread * thread,uint32_t index)32 bool WeakVector::Delete(const JSThread *thread, uint32_t index)
33 {
34 uint32_t end = GetEnd();
35 if (index < end) {
36 Set(thread, index, JSTaggedValue::Hole());
37 return true;
38 }
39 return false;
40 }
41
Grow(const JSThread * thread,const JSHandle<WeakVector> & old,uint32_t newCapacity)42 JSHandle<WeakVector> WeakVector::Grow(const JSThread *thread, const JSHandle<WeakVector> &old, uint32_t newCapacity)
43 {
44 uint32_t oldCapacity = old->GetCapacity();
45 ASSERT(newCapacity > oldCapacity);
46 if (oldCapacity == MAX_VECTOR_INDEX) {
47 return old;
48 }
49
50 if (newCapacity > MAX_VECTOR_INDEX) {
51 newCapacity = MAX_VECTOR_INDEX;
52 }
53
54 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
55 JSHandle<TaggedArray> newVec = factory->CopyArray(JSHandle<TaggedArray>(old), VectorToArrayIndex(oldCapacity),
56 VectorToArrayIndex(newCapacity));
57
58 return JSHandle<WeakVector>(newVec);
59 }
60
PushBack(const JSThread * thread,JSTaggedValue value)61 uint32_t WeakVector::PushBack(const JSThread *thread, JSTaggedValue value)
62 {
63 uint32_t end = GetEnd();
64 if (end == GetCapacity()) {
65 return TaggedArray::MAX_ARRAY_INDEX;
66 }
67
68 Set(thread, end, value);
69 SetEnd(thread, end + 1);
70 return end;
71 }
72 } // namespace panda::ecmascript
73