1 /** 2 * Copyright (c) 2021-2022 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 LIBPANDAFILE_DEBUG_DATA_ACCESSOR_H 17 #define LIBPANDAFILE_DEBUG_DATA_ACCESSOR_H 18 19 #include "file.h" 20 21 #include "utils/span.h" 22 23 namespace panda::panda_file { 24 25 class DebugInfoDataAccessor { 26 public: 27 DebugInfoDataAccessor(const File &panda_file, File::EntityId debug_info_id); 28 29 ~DebugInfoDataAccessor() = default; 30 31 NO_COPY_SEMANTIC(DebugInfoDataAccessor); 32 NO_MOVE_SEMANTIC(DebugInfoDataAccessor); 33 GetLineStart()34 uint32_t GetLineStart() const 35 { 36 return line_start_; 37 } 38 GetNumParams()39 uint32_t GetNumParams() const 40 { 41 return num_params_; 42 } 43 44 template <class Callback> 45 void EnumerateParameters(const Callback &cb); 46 47 Span<const uint8_t> GetConstantPool(); 48 49 const uint8_t *GetLineNumberProgram(); 50 GetSize()51 size_t GetSize() 52 { 53 if (size_ == 0) { 54 SkipLineNumberProgram(); 55 } 56 57 return size_; 58 } 59 GetPandaFile()60 const File &GetPandaFile() const 61 { 62 return panda_file_; 63 } 64 GetDebugInfoId()65 File::EntityId GetDebugInfoId() const 66 { 67 return debug_info_id_; 68 } 69 70 private: 71 void SkipParameters(); 72 73 void SkipConstantPool(); 74 75 void SkipLineNumberProgram(); 76 77 const File &panda_file_; 78 File::EntityId debug_info_id_; 79 80 uint32_t line_start_; 81 uint32_t num_params_; 82 Span<const uint8_t> parameters_sp_ {nullptr, nullptr}; 83 Span<const uint8_t> constant_pool_size_sp_ {nullptr, nullptr}; 84 Span<const uint8_t> line_num_program_off_sp_ {nullptr, nullptr}; 85 86 size_t size_ {0}; 87 }; 88 89 } // namespace panda::panda_file 90 91 #endif // LIBPANDAFILE_DEBUG_DATA_ACCESSOR_H 92