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