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/global_env.h"
21 #include "ecmascript/js_api/js_api_lightweightset.h"
22 #include "ecmascript/js_array.h"
23
24 namespace panda::ecmascript {
25 using BuiltinsBase = base::BuiltinsBase;
26 using ContainerError = containers::ContainerError;
27 using ErrorFlag = containers::ErrorFlag;
Next(EcmaRuntimeCallInfo * argv)28 JSTaggedValue JSAPILightWeightSetIterator::Next(EcmaRuntimeCallInfo *argv)
29 {
30 ASSERT(argv);
31 JSThread *thread = argv->GetThread();
32 [[maybe_unused]] EcmaHandleScope handleScope(thread);
33 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
34 if (!input->IsJSAPILightWeightSetIterator()) {
35 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
36 "The Symbol.iterator method cannot be bound");
37 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error, JSTaggedValue::Exception());
38 }
39 JSHandle<JSAPILightWeightSetIterator> iter(input);
40 JSHandle<JSTaggedValue> lightWeightSet(thread, iter->GetIteratedLightWeightSet(thread));
41 uint32_t index = iter->GetNextIndex();
42 IterationKind itemKind = IterationKind(iter->GetIterationKind());
43 if (lightWeightSet->IsUndefined()) {
44 JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
45 return env->GetUndefinedIteratorResult().GetTaggedValue();
46 }
47 uint32_t length = 0;
48 if (lightWeightSet->IsJSAPILightWeightSet()) {
49 length = JSHandle<JSAPILightWeightSet>(lightWeightSet)->GetLength();
50 }
51 if (index >= length) {
52 JSHandle<JSTaggedValue> undefinedHandle = thread->GlobalConstants()->GetHandledUndefined();
53 iter->SetIteratedLightWeightSet(thread, undefinedHandle);
54 JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
55 return env->GetUndefinedIteratorResult().GetTaggedValue();
56 }
57 iter->SetNextIndex(index + 1);
58 JSHandle<JSAPILightWeightSet> lightWeightSetHandle(lightWeightSet);
59 JSAPILightWeightSet::CheckAndCopyValues(thread, lightWeightSetHandle);
60 JSHandle<TaggedArray> valueArray(
61 thread, TaggedArray::Cast(lightWeightSetHandle->GetValues(thread).GetTaggedObject()));
62 JSHandle<JSTaggedValue> value(thread, valueArray->Get(thread, index));
63 if (itemKind == IterationKind::VALUE) {
64 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
65 }
66 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
67 JSHandle<TaggedArray> array = factory->NewTaggedArray(2); // 2 means the length of array
68 array->Set(thread, 0, value);
69 array->Set(thread, 1, value);
70 JSHandle<JSTaggedValue> keyAndValue(JSArray::CreateArrayFromList(thread, array));
71 return JSIterator::CreateIterResultObject(thread, keyAndValue, false).GetTaggedValue();
72 }
73 } // namespace panda::ecmascript
74