1 /*
2 * Copyright (c) 2024 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/shared_objects/js_shared_set_iterator.h"
17
18 #include "ecmascript/js_array.h"
19 #include "ecmascript/linked_hash_table.h"
20 #include "ecmascript/shared_objects/concurrent_api_scope.h"
21
22 namespace panda::ecmascript {
23 using BuiltinsBase = base::BuiltinsBase;
Next(EcmaRuntimeCallInfo * argv)24 JSTaggedValue JSSharedSetIterator::Next(EcmaRuntimeCallInfo *argv)
25 {
26 ASSERT(argv);
27 JSThread *thread = argv->GetThread();
28 [[maybe_unused]] EcmaHandleScope handleScope(thread);
29 JSHandle<JSTaggedValue> thisObj(BuiltinsBase::GetThis(argv));
30 return NextInternal(thread, thisObj);
31 }
32
NextInternal(JSThread * thread,JSHandle<JSTaggedValue> thisObj)33 JSTaggedValue JSSharedSetIterator::NextInternal(JSThread *thread, JSHandle<JSTaggedValue> thisObj)
34 {
35 if (!thisObj->IsJSSharedSetIterator()) {
36 THROW_TYPE_ERROR_AND_RETURN(thread, "this value is not a shared-set iterator", JSTaggedValue::Exception());
37 }
38 JSHandle<JSSharedSetIterator> iter(thisObj);
39 JSHandle<JSTaggedValue> undefinedHandle(thread, JSTaggedValue::Undefined());
40 if (iter->GetIteratedSet(thread).IsUndefined()) {
41 return JSIterator::CreateIterResultObject(thread, undefinedHandle, true).GetTaggedValue();
42 }
43 JSHandle<JSSharedSet> iteratedSet(thread, iter->GetIteratedSet(thread));
44 [[maybe_unused]] ConcurrentApiScope<JSSharedSet> scope(thread, JSHandle<JSTaggedValue>::Cast(iteratedSet));
45 RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
46 JSHandle<LinkedHashSet> set(thread, iteratedSet->GetLinkedSet(thread));
47
48 int index = static_cast<int>(iter->GetNextIndex());
49 IterationKind itemKind = iter->GetIterationKind();
50 int totalElements = set->NumberOfElements() + set->NumberOfDeletedElements();
51
52 while (index < totalElements) {
53 if (!set->GetKey(thread, index).IsHole()) {
54 iter->SetNextIndex(index + 1);
55 JSHandle<JSTaggedValue> key(thread, set->GetKey(thread, index));
56 if (itemKind == IterationKind::VALUE || itemKind == IterationKind::KEY) {
57 return JSIterator::CreateIterResultObject(thread, key, false).GetTaggedValue();
58 }
59 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
60 JSHandle<TaggedArray> array(factory->NewTaggedArray(2)); // 2: key and value pair
61 array->Set(thread, 0, key);
62 array->Set(thread, 1, key);
63 JSHandle<JSTaggedValue> keyAndValue(JSArray::CreateArrayFromList(thread, array));
64 return JSIterator::CreateIterResultObject(thread, keyAndValue, false).GetTaggedValue();
65 }
66 index++;
67 }
68 iter->SetIteratedSet(thread, JSTaggedValue::Undefined());
69 return JSIterator::CreateIterResultObject(thread, undefinedHandle, true).GetTaggedValue();
70 }
71
CreateSetIterator(JSThread * thread,const JSHandle<JSTaggedValue> & obj,IterationKind kind)72 JSHandle<JSTaggedValue> JSSharedSetIterator::CreateSetIterator(JSThread *thread,
73 const JSHandle<JSTaggedValue> &obj, IterationKind kind)
74 {
75 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
76 if (!obj->IsJSSharedSet()) {
77 JSHandle<JSTaggedValue> undefinedHandle(thread, JSTaggedValue::Undefined());
78 THROW_TYPE_ERROR_AND_RETURN(thread, "obj is not SharedSet", undefinedHandle);
79 }
80 JSHandle<JSTaggedValue> iter(factory->NewJSSetIterator(JSHandle<JSSharedSet>(obj), kind));
81 return iter;
82 }
83 } // namespace panda::ecmascript
84