1 /*
2 * Copyright (c) 2021 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/jspandafile/scope_info_extractor.h"
17
18 #include "ecmascript/interpreter/frame_handler.h"
19 #include "ecmascript/jspandafile/literal_data_extractor.h"
20 #include "ecmascript/jspandafile/program_object.h"
21 #include "ecmascript/object_factory-inl.h"
22 #include "ecmascript/tagged_array-inl.h"
23
24 namespace panda::ecmascript {
GenerateScopeInfo(JSThread * thread,uint16_t scopeId)25 JSTaggedValue ScopeInfoExtractor::GenerateScopeInfo(JSThread *thread, uint16_t scopeId)
26 {
27 EcmaVM *ecmaVm = thread->GetEcmaVM();
28 ObjectFactory *factory = ecmaVm->GetFactory();
29
30 [[maybe_unused]] EcmaHandleScope handleScope(thread);
31 Method *method = FrameHandler(thread).GetMethod();
32 const JSPandaFile *jsPandaFile = method->GetJSPandaFile();
33 JSHandle<ConstantPool> constpool(thread, method->GetConstantPool());
34
35 JSHandle<TaggedArray> elementsLiteral;
36 if (jsPandaFile->IsNewVersion()) {
37 panda_file::File::EntityId id = constpool->GetEntityId(scopeId);
38 elementsLiteral = LiteralDataExtractor::GetDatasIgnoreType(thread, jsPandaFile, id, constpool);
39 } else {
40 elementsLiteral = LiteralDataExtractor::GetDatasIgnoreType(thread, jsPandaFile, scopeId, constpool);
41 }
42
43 ASSERT(elementsLiteral->GetLength() > 0);
44
45 auto *scopeDebugInfo = ecmaVm->GetNativeAreaAllocator()->New<ScopeDebugInfo>();
46 if (scopeDebugInfo == nullptr) {
47 return JSTaggedValue::Hole();
48 }
49
50 size_t length = elementsLiteral->GetLength();
51 for (size_t i = 1; i < length; i += 2) { // 2: Each literal buffer contains a pair of key-value.
52 JSTaggedValue val = elementsLiteral->Get(i);
53 ASSERT(val.IsString());
54 CString name = ConvertToString(EcmaString::Cast(val.GetTaggedObject()));
55 int32_t slot = elementsLiteral->Get(i + 1).GetInt();
56 scopeDebugInfo->scopeInfo.emplace(name, slot);
57 }
58
59 JSHandle<JSNativePointer> pointer = factory->NewJSNativePointer(
60 scopeDebugInfo, NativeAreaAllocator::FreeObjectFunc<ScopeDebugInfo>, ecmaVm->GetNativeAreaAllocator());
61 return pointer.GetTaggedValue();
62 }
63 } // namespace panda::ecmascript
64