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_arraylist_iterator.h"
17
18 #include "ecmascript/containers/containers_errors.h"
19 #include "ecmascript/js_api/js_api_arraylist.h"
20
21 namespace panda::ecmascript {
22 using BuiltinsBase = base::BuiltinsBase;
23 using ContainerError = containers::ContainerError;
24 using ErrorFlag = containers::ErrorFlag;
25 // ArrayListIteratorPrototype%.next ( )
Next(EcmaRuntimeCallInfo * argv)26 JSTaggedValue JSAPIArrayListIterator::Next(EcmaRuntimeCallInfo *argv)
27 {
28 ASSERT(argv);
29 JSThread *thread = argv->GetThread();
30 [[maybe_unused]] EcmaHandleScope handleScope(thread);
31
32 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
33 if (!input->IsJSAPIArrayListIterator()) {
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<JSAPIArrayListIterator> iter(input);
39 JSHandle<JSTaggedValue> arrayList(thread, iter->GetIteratedArrayList());
40 const GlobalEnvConstants *globalConst = thread->GlobalConstants();
41
42 if (arrayList->IsUndefined()) {
43 return globalConst->GetUndefinedIterResult();
44 }
45
46 uint32_t index = iter->GetNextIndex();
47 uint32_t length = 0;
48
49 if (arrayList->IsJSAPIArrayList()) {
50 length = JSHandle<JSAPIArrayList>(arrayList)->GetLength().GetArrayLength();
51 }
52
53 if (index >= length) {
54 JSHandle<JSTaggedValue> undefinedHandle = globalConst->GetHandledUndefined();
55 iter->SetIteratedArrayList(thread, undefinedHandle);
56 return globalConst->GetUndefinedIterResult();
57 }
58
59 iter->SetNextIndex(index + 1);
60 JSHandle<JSTaggedValue> value(thread, JSHandle<JSAPIArrayList>::Cast(arrayList)->Get(thread, index));
61
62 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
63 }
64 } // namespace panda::ecmascript
65