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_lightweightmap_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_lightweightmap.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 JSAPILightWeightMapIterator::Next(EcmaRuntimeCallInfo *argv)
28 {
29 ASSERT(argv != nullptr);
30 JSThread *thread = argv->GetThread();
31 [[maybe_unused]] EcmaHandleScope handleScope(thread);
32 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
33 if (!input->IsJSAPILightWeightMapIterator()) {
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<JSAPILightWeightMapIterator> iter(input);
39 JSHandle<JSTaggedValue> oldlightWeightMap(thread, iter->GetIteratedLightWeightMap());
40 const GlobalEnvConstants *globalConst = thread->GlobalConstants();
41 JSHandle<JSAPILightWeightMap> lightWeightMap(oldlightWeightMap);
42 IterationKind itemKind = IterationKind(iter->GetIterationKind());
43 if (oldlightWeightMap->IsUndefined()) {
44 return globalConst->GetUndefinedIterResult();
45 }
46 int32_t index = iter->GetNextIndex();
47 int32_t length = static_cast<int32_t>(lightWeightMap->GetSize());
48 if (index >= length) {
49 JSHandle<JSTaggedValue> undefinedHandle = globalConst->GetHandledUndefined();
50 iter->SetIteratedLightWeightMap(thread, undefinedHandle);
51 return globalConst->GetUndefinedIterResult();
52 }
53 iter->SetNextIndex(index + 1);
54
55 JSHandle<JSTaggedValue> key(thread, lightWeightMap->GetKeyAt(thread, lightWeightMap, index));
56 if (itemKind == IterationKind::KEY) {
57 return JSIterator::CreateIterResultObject(thread, key, false).GetTaggedValue();
58 }
59 JSHandle<JSTaggedValue> value(thread, lightWeightMap->Get(thread, lightWeightMap, key));
60 if (itemKind == IterationKind::VALUE) {
61 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
62 }
63 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
64 JSHandle<TaggedArray> array = factory->NewTaggedArray(2); // 2 means the length of array
65 array->Set(thread, 0, key);
66 array->Set(thread, 1, value);
67 JSHandle<JSTaggedValue> keyAndValue(JSArray::CreateArrayFromList(thread, array));
68
69 return JSIterator::CreateIterResultObject(thread, keyAndValue, false).GetTaggedValue();
70 }
71
CreateLightWeightMapIterator(JSThread * thread,JSHandle<JSTaggedValue> & obj,IterationKind kind)72 JSHandle<JSTaggedValue> JSAPILightWeightMapIterator::CreateLightWeightMapIterator(JSThread *thread,
73 JSHandle<JSTaggedValue> &obj,
74 IterationKind kind)
75 {
76 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
77 if (!obj->IsJSAPILightWeightMap()) {
78 if (obj->IsJSProxy() && JSHandle<JSProxy>::Cast(obj)->GetTarget().IsJSAPILightWeightMap()) {
79 obj = JSHandle<JSTaggedValue>(thread, JSHandle<JSProxy>::Cast(obj)->GetTarget());
80 } else {
81 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
82 "The Symbol.iterator method cannot be bound");
83 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error,
84 JSHandle<JSTaggedValue>(thread, JSTaggedValue::Exception()));
85 }
86 }
87 JSHandle<JSTaggedValue> iter(factory->NewJSAPILightWeightMapIterator(JSHandle<JSAPILightWeightMap>(obj), kind));
88 return iter;
89 }
90 } // namespace panda::ecmascript
91