1 /* 2 * Copyright (c) 2022-2023 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 ECMASCRIPT_TOOLING_BACKEND_JS_SINGLE_STEPPER_H 17 #define ECMASCRIPT_TOOLING_BACKEND_JS_SINGLE_STEPPER_H 18 19 #include "ecmascript/debugger/js_debugger_interface.h" 20 #include "ecmascript/debugger/js_pt_method.h" 21 #include "ecmascript/js_thread.h" 22 #include "ecmascript/jspandafile/debug_info_extractor.h" 23 24 #include "libpandabase/macros.h" 25 26 namespace panda::ecmascript::tooling { 27 class SingleStepper { 28 public: 29 enum class Type { STEP_INTO, STEP_OVER, STEP_OUT }; SingleStepper(const EcmaVM * ecmaVm,std::unique_ptr<PtMethod> ptMethod,std::list<JSPtStepRange> stepRanges,Type type)30 SingleStepper(const EcmaVM *ecmaVm, std::unique_ptr<PtMethod> ptMethod, 31 std::list<JSPtStepRange> stepRanges, Type type) 32 : ecmaVm_(ecmaVm), 33 method_(std::move(ptMethod)), 34 stepRanges_(std::move(stepRanges)), 35 stackDepth_(GetStackDepth()), 36 type_(type) {} 37 38 virtual ~SingleStepper() = default; 39 NO_COPY_SEMANTIC(SingleStepper); 40 NO_MOVE_SEMANTIC(SingleStepper); 41 42 bool StepComplete(uint32_t bcOffset) const; GetStepperType()43 Type GetStepperType() const 44 { 45 return type_; 46 } 47 48 static std::unique_ptr<SingleStepper> GetStepIntoStepper(const EcmaVM *ecmaVm); 49 static std::unique_ptr<SingleStepper> GetStepOverStepper(const EcmaVM *ecmaVm); 50 static std::unique_ptr<SingleStepper> GetStepOutStepper(const EcmaVM *ecmaVm); 51 52 private: 53 uint32_t GetStackDepth() const; 54 bool InStepRange(uint32_t pc) const; 55 static std::list<JSPtStepRange> GetStepRanges(DebugInfoExtractor *extractor, 56 panda_file::File::EntityId methodId, uint32_t offset); 57 static std::unique_ptr<SingleStepper> GetStepper(const EcmaVM *ecmaVm, SingleStepper::Type type); 58 59 const EcmaVM *ecmaVm_; 60 std::unique_ptr<PtMethod> method_; 61 std::list<JSPtStepRange> stepRanges_; 62 uint32_t stackDepth_; 63 Type type_; 64 }; 65 } // namespace panda::ecmascript::tooling 66 #endif // ECMASCRIPT_TOOLING_BACKEND_JS_SINGLE_STEPPER_H 67