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_BUILTINS_CONTAINERS_QUEUE_STUB_BUILDER_H 17 #define ECMASCRIPT_COMPILER_BUILTINS_CONTAINERS_QUEUE_STUB_BUILDER_H 18 #include "ecmascript/compiler/stub_builder-inl.h" 19 #include "ecmascript/js_api/js_api_queue.h" 20 21 namespace panda::ecmascript::kungfu { 22 class ContainersQueueStubBuilder : public StubBuilder { 23 public: ContainersQueueStubBuilder(StubBuilder * parent)24 explicit ContainersQueueStubBuilder(StubBuilder *parent) 25 : StubBuilder(parent) {} 26 ~ContainersQueueStubBuilder() override = default; 27 NO_MOVE_SEMANTIC(ContainersQueueStubBuilder); 28 NO_COPY_SEMANTIC(ContainersQueueStubBuilder); GenerateCircuit()29 void GenerateCircuit() override {} 30 GetArrayLength(GateRef obj)31 GateRef GetArrayLength(GateRef obj) 32 { 33 auto env = GetEnvironment(); 34 Label entry(env); 35 env->SubCfgEntry(&entry); 36 Label exit(env); 37 Label endGreatBeging(env); 38 Label endNotGreatBeging(env); 39 DEFVARIABLE(length, VariableType::INT32(), Int32(0)); 40 GateRef begin = Load(VariableType::INT32(), obj, IntPtr(JSAPIQueue::FRONT_OFFSET)); 41 GateRef end = Load(VariableType::INT32(), obj, IntPtr(JSAPIQueue::TAIL_OFFSET)); 42 Branch(Int32GreaterThanOrEqual(end, begin), &endGreatBeging, &endNotGreatBeging); 43 Bind(&endGreatBeging); 44 { 45 length = Int32Sub(end, begin); 46 Jump(&exit); 47 } 48 Bind(&endNotGreatBeging); 49 { 50 GateRef elementsOffset = IntPtr(JSObject::ELEMENTS_OFFSET); 51 GateRef elements = Load(VariableType::JS_POINTER(), obj, elementsOffset); 52 GateRef elementsSize = Load(VariableType::INT32(), elements, IntPtr(TaggedArray::LENGTH_OFFSET)); 53 length = Int32Add(Int32Sub(end, begin), elementsSize); 54 Jump(&exit); 55 } 56 Bind(&exit); 57 auto ret = *length; 58 env->SubCfgExit(); 59 return ret; 60 } 61 Get(GateRef obj,GateRef index)62 GateRef Get(GateRef obj, GateRef index) 63 { 64 GateRef elementsOffset = IntPtr(JSObject::ELEMENTS_OFFSET); 65 GateRef elements = Load(VariableType::JS_POINTER(), obj, elementsOffset); 66 GateRef capacity = Load(VariableType::INT32(), elements, IntPtr(TaggedArray::LENGTH_OFFSET)); 67 GateRef front = Load(VariableType::INT32(), obj, IntPtr(JSAPIQueue::FRONT_OFFSET)); 68 GateRef curIndex = Int32Mod(Int32Add(front, index), capacity); 69 return GetValueFromTaggedArray(elements, curIndex); 70 } 71 GetNextPosition(GateRef obj,GateRef index)72 GateRef GetNextPosition(GateRef obj, GateRef index) 73 { 74 GateRef elementsOffset = IntPtr(JSObject::ELEMENTS_OFFSET); 75 GateRef elements = Load(VariableType::JS_POINTER(), obj, elementsOffset); 76 GateRef elementsSize = Load(VariableType::INT32(), elements, IntPtr(TaggedArray::LENGTH_OFFSET)); 77 return Int32Mod(Int32Add(index, Int32(1)), elementsSize); 78 } 79 GetCurrentFront(GateRef obj)80 GateRef GetCurrentFront(GateRef obj) 81 { 82 return Load(VariableType::INT32(), obj, IntPtr(JSAPIQueue::FRONT_OFFSET)); 83 } 84 }; 85 } // namespace panda::ecmascript::kungfu 86 #endif // ECMASCRIPT_COMPILER_BUILTINS_CONTAINERS_QUEUE_STUB_BUILDER_H