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_list_iterator.h"
17
18 #include "ecmascript/base/typed_array_helper.h"
19 #include "ecmascript/base/typed_array_helper-inl.h"
20 #include "ecmascript/builtins/builtins_errors.h"
21 #include "ecmascript/containers/containers_errors.h"
22 #include "ecmascript/global_env.h"
23 #include "ecmascript/js_api/js_api_list.h"
24 #include "ecmascript/object_factory.h"
25 #include "ecmascript/tagged_list.h"
26
27 namespace panda::ecmascript {
28 using BuiltinsBase = base::BuiltinsBase;
29 using ContainerError = containers::ContainerError;
30 using ErrorFlag = containers::ErrorFlag;
Next(EcmaRuntimeCallInfo * argv)31 JSTaggedValue JSAPIListIterator::Next(EcmaRuntimeCallInfo *argv)
32 {
33 ASSERT(argv);
34 JSThread *thread = argv->GetThread();
35 [[maybe_unused]] EcmaHandleScope handleScope(thread);
36 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
37 if (!input->IsJSAPIListIterator()) {
38 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
39 "The Symbol.iterator method cannot be bound");
40 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error, JSTaggedValue::Exception());
41 }
42 JSHandle<JSAPIListIterator> iter(input);
43 JSHandle<JSTaggedValue> list(thread, iter->GetIteratedList());
44 const GlobalEnvConstants *globalConst = thread->GlobalConstants();
45 JSHandle<TaggedSingleList> singleList(list);
46 if (list->IsUndefined()) {
47 return globalConst->GetUndefinedIterResult();
48 }
49 int index = static_cast<int>(iter->GetNextIndex());
50 int length = singleList->Length();
51 if (index >= length) {
52 JSHandle<JSTaggedValue> undefinedHandle = globalConst->GetHandledUndefined();
53 iter->SetIteratedList(thread, undefinedHandle);
54 return globalConst->GetUndefinedIterResult();
55 }
56 iter->SetNextIndex(index + 1);
57 int dataIndex = static_cast<int>(iter->GetDataIndex());
58 std::pair<int, JSTaggedValue> resultPair = singleList->GetByDataIndex(dataIndex);
59 iter->SetDataIndex(resultPair.first);
60 JSHandle<JSTaggedValue> value(thread, resultPair.second);
61 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
62 }
63
CreateListIterator(JSThread * thread,JSHandle<JSTaggedValue> & obj)64 JSHandle<JSTaggedValue> JSAPIListIterator::CreateListIterator(JSThread *thread, JSHandle<JSTaggedValue> &obj)
65 {
66 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
67 if (!obj->IsJSAPIList()) {
68 if (obj->IsJSProxy() && JSHandle<JSProxy>::Cast(obj)->GetTarget().IsJSAPIList()) {
69 obj = JSHandle<JSTaggedValue>(thread, JSHandle<JSProxy>::Cast(obj)->GetTarget());
70 } else {
71 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
72 "The Symbol.iterator method cannot be bound");
73 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error,
74 JSHandle<JSTaggedValue>(thread, JSTaggedValue::Exception()));
75 }
76 }
77 JSHandle<JSTaggedValue> iter(factory->NewJSAPIListIterator(JSHandle<JSAPIList>(obj)));
78 return iter;
79 }
80 } // namespace panda::ecmascript
81