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_ARGUMENT_ACCESSOR_H 17 #define ECMASCRIPT_COMPILER_ARGUMENT_ACCESSOR_H 18 19 #include "ecmascript/compiler/circuit.h" 20 #include "ecmascript/compiler/gate.h" 21 #include "ecmascript/compiler/gate_accessor.h" 22 #include "ecmascript/compiler/type_recorder.h" 23 #include "ecmascript/method.h" 24 25 namespace panda::ecmascript::kungfu { 26 enum class CommonArgIdx : uint8_t { 27 GLUE = 0, 28 LEXENV, 29 ACTUAL_ARGC, 30 FUNC, 31 NEW_TARGET, 32 THIS_OBJECT, 33 NUM_OF_ARGS, 34 }; 35 36 class ArgumentAccessor { 37 public: 38 explicit ArgumentAccessor( 39 Circuit *circuit, const MethodLiteral *methodLiteral = nullptr) circuit_(circuit)40 : circuit_(circuit), 41 method_(methodLiteral), 42 argRoot_(circuit->GetArgRoot()), 43 args_(0) 44 { 45 CollectArgs(); 46 } 47 ~ArgumentAccessor() = default; 48 49 void NewCommonArg(const CommonArgIdx argIndex, MachineType machineType, GateType gateType); 50 void NewArg(const size_t argIndex); 51 // method must be set 52 size_t GetActualNumArgs() const; 53 // method must be set 54 GateRef GetArgGate(const size_t currentVreg) const; 55 GateRef GetCommonArgGate(const CommonArgIdx arg) const; ArgsAt(const size_t index)56 GateRef ArgsAt(const size_t index) const 57 { 58 return args_.at(index); 59 } ArgsCount()60 size_t ArgsCount() const 61 { 62 return args_.size(); 63 } 64 void FillArgsGateType(const TypeRecorder *typeRecorder); 65 void CollectArgs(); GetFixArgsNum()66 static size_t GetFixArgsNum() 67 { 68 return static_cast<size_t>(CommonArgIdx::NUM_OF_ARGS) - static_cast<size_t>(CommonArgIdx::FUNC); 69 } 70 71 private: 72 size_t GetFunctionArgIndex(const size_t currentVreg, const bool haveFunc, 73 const bool haveNewTarget, const bool haveThis) const; 74 GateRef GetTypedArgGate(const size_t argIndex) const; 75 76 Circuit *circuit_ {nullptr}; 77 const MethodLiteral *method_ {nullptr}; 78 GateRef argRoot_; 79 std::vector<GateRef> args_; 80 }; 81 } 82 #endif // ECMASCRIPT_COMPILER_ARGUMENT_ACCESSOR_H 83