1 /*
2 * Copyright (c) 2022 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/js_api/js_api_lightweightset_iterator.h"
17
18 #include "ecmascript/base/typed_array_helper-inl.h"
19 #include "ecmascript/containers/containers_errors.h"
20 #include "ecmascript/js_api/js_api_lightweightset.h"
21 #include "ecmascript/js_array.h"
22
23 namespace panda::ecmascript {
24 using BuiltinsBase = base::BuiltinsBase;
25 using ContainerError = containers::ContainerError;
26 using ErrorFlag = containers::ErrorFlag;
Next(EcmaRuntimeCallInfo * argv)27 JSTaggedValue JSAPILightWeightSetIterator::Next(EcmaRuntimeCallInfo *argv)
28 {
29 ASSERT(argv);
30 JSThread *thread = argv->GetThread();
31 [[maybe_unused]] EcmaHandleScope handleScope(thread);
32 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
33 if (!input->IsJSAPILightWeightSetIterator()) {
34 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
35 "The Symbol.iterator method cannot be bound");
36 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error, JSTaggedValue::Exception());
37 }
38 JSHandle<JSAPILightWeightSetIterator> iter(input);
39 const GlobalEnvConstants *globalConst = thread->GlobalConstants();
40 JSHandle<JSTaggedValue> lightWeightSet(thread, iter->GetIteratedLightWeightSet());
41 uint32_t index = iter->GetNextIndex();
42 IterationKind itemKind = IterationKind(iter->GetIterationKind());
43 if (lightWeightSet->IsUndefined()) {
44 return globalConst->GetUndefinedIterResult();
45 }
46 uint32_t length = 0;
47 if (lightWeightSet->IsJSAPILightWeightSet()) {
48 length = JSHandle<JSAPILightWeightSet>(lightWeightSet)->GetLength();
49 }
50 if (index >= length) {
51 JSHandle<JSTaggedValue> undefinedHandle = globalConst->GetHandledUndefined();
52 iter->SetIteratedLightWeightSet(thread, undefinedHandle);
53 return globalConst->GetUndefinedIterResult();
54 }
55 iter->SetNextIndex(index + 1);
56 JSHandle<JSAPILightWeightSet> lightWeightSetHandle(lightWeightSet);
57 JSAPILightWeightSet::CheckAndCopyValues(thread, lightWeightSetHandle);
58 JSHandle<TaggedArray> valueArray(
59 thread, TaggedArray::Cast(lightWeightSetHandle->GetValues().GetTaggedObject()));
60 JSHandle<JSTaggedValue> value(thread, valueArray->Get(index));
61 if (itemKind == IterationKind::VALUE) {
62 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
63 }
64 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
65 JSHandle<TaggedArray> array = factory->NewTaggedArray(2); // 2 means the length of array
66 array->Set(thread, 0, value);
67 array->Set(thread, 1, value);
68 JSHandle<JSTaggedValue> keyAndValue(JSArray::CreateArrayFromList(thread, array));
69 return JSIterator::CreateIterResultObject(thread, keyAndValue, false).GetTaggedValue();
70 }
71 } // namespace panda::ecmascript
72