1 /*
2  * Copyright (c) 2023 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 OHOS_ABILITY_JS_ENVIRONMENT_SOURCE_MAP_H
17 #define OHOS_ABILITY_JS_ENVIRONMENT_SOURCE_MAP_H
18 
19 #include <cstring>
20 #include <fstream>
21 #include <limits.h>
22 #include <mutex>
23 #include <unordered_map>
24 #include <utility>
25 #include <thread>
26 #include <vector>
27 
28 #include "ecmascript/log_wrapper.h"
29 
30 namespace panda {
31 namespace ecmascript {
32 using Clock = std::chrono::high_resolution_clock;
33 
34 struct SourceMapInfo {
35     int32_t beforeRow = 0;
36     int32_t beforeColumn = 0;
37     int32_t afterRow = 0;
38     int32_t afterColumn = 0;
39     int32_t sourcesVal = 0;
40     int32_t namesVal = 0;
41 };
42 
43 struct MappingInfo {
44     int32_t row = 0;
45     int32_t col = 0;
46 };
47 
48 class SourceMapData final {
49 public:
50     SourceMapData() = default;
51     ~SourceMapData() = default;
52 
53     std::string url_;
54     SourceMapInfo nowPos_;
55     std::vector<std::string> files_;
56     std::vector<std::string> sources_;
57     std::vector<std::string> names_;
58     std::vector<std::string> mappings_;
59     std::vector<SourceMapInfo> afterPos_;
60 
GetSourceMapData() const61     inline SourceMapData GetSourceMapData() const
62     {
63         return *this;
64     }
65 };
66 
67 class SourceMap final {
68 public:
69     SourceMap() = default;
70     ~SourceMap() = default;
71 
72 #if defined(PANDA_TARGET_OHOS)
73     void Init(const std::string& hapPath);
74 #endif
75     void Init(uint8_t *data, size_t dataSize);
76     bool TranslateUrlPositionBySourceMap(std::string& url, int& line, int& column);
77 
78 private:
79     void SplitSourceMap(const std::string& sourceMapData);
80     void ExtractSourceMapData(const std::string& sourceMapData, std::shared_ptr<SourceMapData>& curMapData);
81     void ExtractKeyInfo(const std::string& sourceMap, std::vector<std::string>& sourceKeyInfo);
82     std::vector<std::string> HandleMappings(const std::string& mapping);
83     bool VlqRevCode(const std::string& vStr, std::vector<int32_t>& ans);
84     MappingInfo Find(int32_t row, int32_t col, const SourceMapData& targetMap, bool& isReplaces);
85     void GetPosInfo(const std::string& temp, int32_t start, std::string& line, std::string& column);
86     bool GetLineAndColumnNumbers(int& line, int& column, SourceMapData& targetMap, bool& isReplaces);
87     uint32_t Base64CharToInt(char charCode);
88     friend class SourceMapFriend;
89 #if defined(PANDA_TARGET_OHOS)
90     bool ReadSourceMapData(const std::string& hapPath, std::string& content);
91 #endif
92 
93 private:
94     std::unordered_map<std::string, std::string> sources_;
95     std::unordered_map<std::string, std::string> mappings_;
96     std::unordered_map<std::string, std::shared_ptr<SourceMapData>> sourceMaps_;
97 };
98 } // namespace panda
99 } // namespace ecmascript
100 
101 #endif // OHOS_ABILITY_JS_ENVIRONMENT_SOURCE_MAP_H
102