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 #ifndef ECMASCRIPT_JSPANDAFILE_ACCESSOR_MODULE_DATA_ACCESSOR_H
17 #define ECMASCRIPT_JSPANDAFILE_ACCESSOR_MODULE_DATA_ACCESSOR_H
18 
19 #include <cstddef>
20 #include <cstdint>
21 #include <variant>
22 #include <vector>
23 
24 #include "ecmascript/module/js_module_source_text.h"
25 
26 #include "libpandabase/macros.h"
27 #include "libpandabase/utils/span.h"
28 
29 namespace panda::ecmascript {
30 class ModuleDataAccessor {
31 public:
32     ModuleDataAccessor(const JSPandaFile *pandaFile, panda_file::File::EntityId module_data_id);
33     ~ModuleDataAccessor() = default;
34     DEFAULT_MOVE_CTOR(ModuleDataAccessor)
35     DEFAULT_COPY_CTOR(ModuleDataAccessor)
36     NO_MOVE_OPERATOR(ModuleDataAccessor);
37     NO_COPY_OPERATOR(ModuleDataAccessor);
38 
39     void EnumerateImportEntry(JSThread *thread, const JSHandle<TaggedArray> &requestModuleArray,
40                               JSHandle<SourceTextModule> &moduleRecord);
41 
42     void EnumerateLocalExportEntry(JSThread *thread, JSHandle<SourceTextModule> &moduleRecord);
43 
44     void EnumerateIndirectExportEntry(JSThread *thread, const JSHandle<TaggedArray> &requestModuleArray,
45                                       JSHandle<SourceTextModule> &moduleRecord);
46 
47     void EnumerateStarExportEntry(JSThread *thread, const JSHandle<TaggedArray> &requestModuleArray,
48                                   JSHandle<SourceTextModule> &moduleRecord);
49     JSHandle<TaggedArray> CreatEntries(JSThread *thread, uint32_t regularImportNum, SharedTypes sharedType);
50 
GetModuleDataId() const51     panda_file::File::EntityId GetModuleDataId() const
52     {
53         return moduleDataId_;
54     }
55 
getRequestModules() const56     const std::vector<uint32_t>& getRequestModules() const
57     {
58         return moduleRequests_;
59     }
60 
61 private:
62     void ReadRegularImportEntry(Span<const uint8_t> *sp, ObjectFactory *factory,
63                                 const JSHandle<TaggedArray> &requestModuleArray,
64                                 JSMutableHandle<JSTaggedValue> &importName,
65                                 JSMutableHandle<JSTaggedValue> &localName,
66                                 JSMutableHandle<JSTaggedValue> &moduleRequest);
67 
68     void ReadNamespaceImportEntry(Span<const uint8_t> *sp, ObjectFactory *factory,
69                                   const JSHandle<TaggedArray> &requestModuleArray,
70                                   JSMutableHandle<JSTaggedValue> &localName,
71                                   JSMutableHandle<JSTaggedValue> &moduleRequest);
72 
73     const JSPandaFile *pandaFile_;
74     panda_file::File::EntityId moduleDataId_;
75     uint32_t numModuleRequests_;
76     std::vector<uint32_t> moduleRequests_;
77     Span<const uint8_t> entryDataSp_ {nullptr, nullptr};
78 };
79 }  // namespace panda::ecmascript
80 #endif  // ECMASCRIPT_JSPANDAFILE_ACCESSOR_MODULE_DATA_ACCESSOR_H
81