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_COMPILER_ASYNC_FUNCTION_LOWRING_H_ 17 #define ECMASCRIPT_COMPILER_ASYNC_FUNCTION_LOWRING_H_ 18 19 #include "ecmascript/compiler/bytecode_circuit_builder.h" 20 #include "ecmascript/compiler/circuit.h" 21 #include "ecmascript/compiler/circuit_builder-inl.h" 22 #include "ecmascript/compiler/circuit_builder.h" 23 24 namespace panda::ecmascript::kungfu { 25 class AsyncFunctionLowering { 26 public: AsyncFunctionLowering(BytecodeCircuitBuilder * bcBuilder,Circuit * circuit,CompilationConfig * cmpCfg,bool enableLog,const std::string & name)27 AsyncFunctionLowering(BytecodeCircuitBuilder *bcBuilder, Circuit *circuit, CompilationConfig *cmpCfg, 28 bool enableLog, const std::string& name) 29 : bcBuilder_(bcBuilder), circuit_(circuit), builder_(circuit, cmpCfg), enableLog_(enableLog), 30 stateEntry_(circuit->GetStateRoot()), 31 dependEntry_(circuit->GetDependRoot()), 32 accessor_(circuit), argAccessor_(circuit), methodName_(name) 33 { 34 } 35 36 ~AsyncFunctionLowering() = default; 37 38 void ProcessAll(); 39 40 bool IsAsyncRelated() const; 41 GetMethodName()42 const std::string& GetMethodName() const 43 { 44 return methodName_; 45 } 46 47 private: IsLogEnabled()48 bool IsLogEnabled() const 49 { 50 return enableLog_; 51 } 52 53 void ProcessJumpTable(); 54 55 void RebuildGeneratorCfg(GateRef resumeGate, GateRef restoreOffsetGate, GateRef ifFalseCondition, GateRef newTarget, 56 GateRef &firstState); 57 58 void UpdateValueSelector(GateRef prevLoopBeginGate, GateRef controlStateGate, GateRef prevBcOffsetPhiGate); 59 60 GateRef GetFirstRestoreRegister(GateRef gate) const; 61 62 BytecodeCircuitBuilder *bcBuilder_; 63 Circuit *circuit_; 64 CircuitBuilder builder_; 65 [[maybe_unused]] bool enableLog_ {false}; 66 GateRef stateEntry_ {Circuit::NullGate()}; 67 GateRef dependEntry_ {Circuit::NullGate()}; 68 GateAccessor accessor_; 69 ArgumentAccessor argAccessor_; 70 std::string methodName_; 71 }; 72 } // panda::ecmascript::kungfu 73 74 #endif // ECMASCRIPT_COMPILER_ASYNC_FUNCTION_LOWRING_H_ 75