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/builtins/builtins_errors.h"
19 #include "ecmascript/base/typed_array_helper-inl.h"
20 #include "ecmascript/base/typed_array_helper.h"
21 #include "ecmascript/containers/containers_errors.h"
22 #include "ecmascript/global_env.h"
23 #include "ecmascript/js_api/js_api_arraylist.h"
24 #include "ecmascript/object_factory.h"
25
26 namespace panda::ecmascript {
27 using BuiltinsBase = base::BuiltinsBase;
28 using ContainerError = containers::ContainerError;
29 using ErrorFlag = containers::ErrorFlag;
30 // ArrayListIteratorPrototype%.next ( )
Next(EcmaRuntimeCallInfo * argv)31 JSTaggedValue JSAPIArrayListIterator::Next(EcmaRuntimeCallInfo *argv)
32 {
33 ASSERT(argv);
34 JSThread *thread = argv->GetThread();
35 [[maybe_unused]] EcmaHandleScope handleScope(thread);
36
37 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
38 if (!input->IsJSAPIArrayListIterator()) {
39 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
40 "The Symbol.iterator method cannot be bound");
41 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error, JSTaggedValue::Exception());
42 }
43 JSHandle<JSAPIArrayListIterator> iter(input);
44 JSHandle<JSTaggedValue> arrayList(thread, iter->GetIteratedArrayList());
45 const GlobalEnvConstants *globalConst = thread->GlobalConstants();
46
47 if (arrayList->IsUndefined()) {
48 return globalConst->GetUndefinedIterResult();
49 }
50
51 uint32_t index = iter->GetNextIndex();
52 uint32_t length = 0;
53
54 if (arrayList->IsJSAPIArrayList()) {
55 length = JSHandle<JSAPIArrayList>(arrayList)->GetLength().GetArrayLength();
56 }
57
58 if (index >= length) {
59 JSHandle<JSTaggedValue> undefinedHandle = globalConst->GetHandledUndefined();
60 iter->SetIteratedArrayList(thread, undefinedHandle);
61 return globalConst->GetUndefinedIterResult();
62 }
63
64 iter->SetNextIndex(index + 1);
65 JSHandle<JSTaggedValue> value(thread, JSHandle<JSAPIArrayList>::Cast(arrayList)->Get(thread, index));
66
67 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
68 }
69 } // namespace panda::ecmascript
70