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1 /**
2  * Copyright (c) 2021-2024 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 ES2PANDA_COMPILER_CORE_PANDAGEN_H
17 #define ES2PANDA_COMPILER_CORE_PANDAGEN_H
18 
19 #include <compiler/base/optionalChain.h>
20 #include <compiler/core/envScope.h>
21 #include <compiler/core/inlineCache.h>
22 #include <compiler/core/regAllocator.h>
23 #include <compiler/core/regScope.h>
24 #include <ir/irnode.h>
25 #include <lexer/token/tokenType.h>
26 #include <libpandafile/file_items.h>
27 #include <macros.h>
28 #include <util/enumbitops.h>
29 
30 #include <regex>
31 
32 namespace panda::es2panda::binder {
33 class FunctionScope;
34 class ModuleVaribale;
35 class ScopeFindResult;
36 class Scope;
37 }  // namespace panda::es2panda::binder
38 
39 namespace panda::es2panda::ir {
40 class AstNode;
41 class ScriptFunction;
42 class Statement;
43 class Expression;
44 class Identifier;
45 }  // namespace panda::es2panda::ir
46 
47 DEFINE_BITOPS(panda::panda_file::FunctionKind);
48 
49 namespace panda::es2panda::compiler {
50 class FunctionBuilder;
51 class CompilerContext;
52 class LiteralBuffer;
53 class DynamicContext;
54 class CatchTable;
55 
56 enum class Constant {
57     JS_NAN,
58     JS_HOLE,
59     JS_INFINITY,
60     JS_UNDEFINED,
61     JS_NULL,
62     JS_TRUE,
63     JS_FALSE,
64     JS_SYMBOL,
65     JS_GLOBAL,
66 };
67 
68 class DebugInfo {
69 public:
DebugInfo(ArenaAllocator * allocator)70     explicit DebugInfo(ArenaAllocator *allocator) : variableDebugInfo(allocator->Adapter()) {};
71     DEFAULT_COPY_SEMANTIC(DebugInfo);
72     DEFAULT_MOVE_SEMANTIC(DebugInfo);
73     ~DebugInfo() = default;
74 
75     ArenaVector<const binder::Scope *> variableDebugInfo;
76     const ir::Statement *firstStmt {};
77 };
78 
79 class PandaGen {
80 public:
PandaGen(ArenaAllocator * allocator,CompilerContext * context,binder::FunctionScope * scope)81     explicit PandaGen(ArenaAllocator *allocator, CompilerContext *context, binder::FunctionScope *scope)
82         : allocator_(allocator),
83           context_(context),
84           builder_(nullptr),
85           debugInfo_(allocator_),
86           topScope_(scope),
87           scope_(topScope_),
88           rootNode_(scope->Node()),
89           insns_(allocator_->Adapter()),
90           catchList_(allocator_->Adapter()),
91           strings_(allocator_->Adapter()),
92           buffStorage_(allocator_->Adapter()),
93           ra_(this)
94     {
95     }
96     ~PandaGen() = default;
97     NO_COPY_SEMANTIC(PandaGen);
98     NO_MOVE_SEMANTIC(PandaGen);
99 
Allocator()100     inline ArenaAllocator *Allocator() const
101     {
102         return allocator_;
103     }
104 
Context()105     inline CompilerContext *Context() const
106     {
107         return context_;
108     }
109 
Strings()110     const ArenaSet<util::StringView> &Strings() const
111     {
112         return strings_;
113     }
114 
CatchList()115     const ArenaVector<CatchTable *> &CatchList() const
116     {
117         return catchList_;
118     }
119 
TopScope()120     binder::FunctionScope *TopScope() const
121     {
122         return topScope_;
123     }
124 
Scope()125     binder::Scope *Scope() const
126     {
127         return scope_;
128     }
129 
RootNode()130     const ir::AstNode *RootNode() const
131     {
132         return rootNode_;
133     }
134 
Insns()135     ArenaList<IRNode *> &Insns()
136     {
137         return insns_;
138     }
139 
Insns()140     const ArenaList<IRNode *> &Insns() const
141     {
142         return insns_;
143     }
144 
SetInsns(ArenaList<IRNode * > & newInsns)145     void SetInsns(ArenaList<IRNode *> &newInsns)
146     {
147         insns_.assign(newInsns.begin(), newInsns.end());
148     }
149 
AllocReg()150     VReg AllocReg()
151     {
152         if (usedRegs_ > UINT16_MAX) {
153             throw Error(ErrorType::GENERIC, "Can't alloc new reg because all regs ran out");
154         }
155         return usedRegs_++;
156     }
157 
NextReg()158     VReg NextReg() const
159     {
160         return usedRegs_;
161     }
162 
TotalRegsNum()163     uint32_t TotalRegsNum() const
164     {
165         return totalRegs_;
166     }
167 
LabelCount()168     size_t LabelCount() const
169     {
170         return labelId_;
171     }
172 
Debuginfo()173     const DebugInfo &Debuginfo() const
174     {
175         return debugInfo_;
176     }
177 
FuncBuilder()178     FunctionBuilder *FuncBuilder() const
179     {
180         return builder_;
181     }
182 
GetEnvScope()183     EnvScope *GetEnvScope() const
184     {
185         return envScope_;
186     }
187 
BuffStorage()188     const ArenaVector<compiler::LiteralBuffer *> &BuffStorage() const
189     {
190         return buffStorage_;
191     }
192 
GetOptionalChain()193     OptionalChain *GetOptionalChain() const
194     {
195         return optionalChain_;
196     }
197 
IcSize()198     uint32_t IcSize() const
199     {
200         return ic_.Size();
201     }
202 
SetSourceLocationFlag(lexer::SourceLocationFlag flag)203     void SetSourceLocationFlag(lexer::SourceLocationFlag flag)
204     {
205         ra_.SetSourceLocationFlag(flag);
206     }
207 
AdjustSpillInsns()208     void AdjustSpillInsns()
209     {
210         ra_.AdjustInsRegWhenHasSpill();
211         totalRegs_ += ra_.GetSpillRegsCount();
212     }
213 
GetSpillRegsCount()214     uint16_t GetSpillRegsCount() const
215     {
216         if (ra_.HasSpill()) {
217             return ra_.GetSpillRegsCount();
218         }
219         return 0;
220     }
221 
GetFunctionKind()222     panda::panda_file::FunctionKind GetFunctionKind() const
223     {
224         return funcKind_;
225     }
226 
IsConcurrent()227     bool IsConcurrent() const
228     {
229         return funcKind_ == panda::panda_file::FunctionKind::CONCURRENT_FUNCTION;
230     }
231 
IsSendable()232     bool IsSendable() const
233     {
234         return (funcKind_ & panda::panda_file::FunctionKind::SENDABLE_FUNCTION) != 0;
235     }
236 
237     void SetFunctionKind();
238     void SetInSendable();
239     size_t GetExpectedPropertyCount() const;
240 
241     bool IsDebug() const;
242     bool isDebuggerEvaluateExpressionMode() const;
243     std::string SourceFile() const;
244     uint32_t ParamCount() const;
245     uint32_t FormalParametersCount() const;
246     uint32_t InternalParamCount() const;
247     const util::StringView &InternalName() const;
248     const util::StringView &FunctionName() const;
249     binder::Binder *Binder() const;
250     pandasm::extensions::Language SourceLang() const;
251 
252     Label *AllocLabel();
253 
254     bool FunctionHasFinalizer() const;
255     bool IsAsyncFunction() const;
256     void FunctionInit(CatchTable* catchTable);
257     void FunctionEnter();
258     void FunctionExit();
259 
260     LiteralBuffer *NewLiteralBuffer();
261     int32_t AddLiteralBuffer(LiteralBuffer *buf);
262     int32_t AddLexicalVarNamesForDebugInfo(ArenaMap<uint32_t, std::pair<util::StringView, int>> &lexicalVars);
263 
264     void InitializeLexEnv(const ir::AstNode *node);
265     void CopyFunctionArguments(const ir::AstNode *node);
266     void GetFunctionObject(const ir::AstNode *node);
267     void GetNewTarget(const ir::AstNode *node);
268     void GetThis(const ir::AstNode *node);
269     void SetThis(const ir::AstNode *node);
270     void LoadVar(const ir::Identifier *node, const binder::ScopeFindResult &result);
271     void StoreVar(const ir::AstNode *node, const binder::ScopeFindResult &result, bool isDeclaration);
272 
273     void StLetOrClassToGlobalRecord(const ir::AstNode *node, const util::StringView &name);
274     void StConstToGlobalRecord(const ir::AstNode *node, const util::StringView &name);
275 
276     void StoreAccumulator(const ir::AstNode *node, VReg vreg);
277     void LoadAccFromArgs(const ir::AstNode *node);
278     void LoadObjProperty(const ir::AstNode *node, VReg obj, const Operand &prop);
279 
280     void LoadObjByName(const ir::AstNode *node, VReg obj, const util::StringView &prop);
281 
282     void StoreObjProperty(const ir::AstNode *node, VReg obj, const Operand &prop);
283     void DefineOwnProperty(const ir::AstNode *node, VReg obj, const Operand &prop);
284     void DefineClassPrivateField(const ir::AstNode *node, uint32_t level, uint32_t slot, VReg obj);
285     void StoreOwnProperty(const ir::AstNode *node, VReg obj, const Operand &prop, bool nameSetting = false);
286     void DeleteObjProperty(const ir::AstNode *node, VReg obj, const Operand &prop);
287     void LoadAccumulator(const ir::AstNode *node, VReg reg);
288     void LoadGlobalVar(const ir::AstNode *node, const util::StringView &name);
289     void StoreGlobalVar(const ir::AstNode *node, const util::StringView &name);
290 
291     void LoadObjByNameViaDebugger(const ir::AstNode *node, const util::StringView &name, bool throwUndefinedIfHole);
292     void TryLoadGlobalByName(const ir::AstNode *node, const util::StringView &name);
293     void StoreObjByNameViaDebugger(const ir::AstNode *node, const util::StringView &name);
294     void TryStoreGlobalByName(const ir::AstNode *node, const util::StringView &name);
295 
296     void LoadAccFromLexEnv(const ir::AstNode *node, const binder::ScopeFindResult &result);
297     void StoreAccToLexEnv(const ir::AstNode *node, const binder::ScopeFindResult &result, bool isDeclaration);
298 
299     void LoadAccumulatorString(const ir::AstNode *node, const util::StringView &str);
300     void LoadAccumulatorFloat(const ir::AstNode *node, double num);
301     void LoadAccumulatorInt(const ir::AstNode *node, int32_t num);
302     void LoadAccumulatorInt(const ir::AstNode *node, size_t num);
303     void LoadAccumulatorBigInt(const ir::AstNode *node, const util::StringView &num);
304 
305     void LoadConst(const ir::AstNode *node, Constant id);
306     void StoreConst(const ir::AstNode *node, VReg reg, Constant id);
307     void MoveVreg(const ir::AstNode *node, VReg vd, VReg vs);
308 
309     void SetLabel(const ir::AstNode *node, Label *label);
310     void Branch(const ir::AstNode *node, class Label *label);
311     bool CheckControlFlowChange() const;
312     Label *ControlFlowChangeBreak(const ir::Identifier *label = nullptr);
313     Label *ControlFlowChangeContinue(const ir::Identifier *label);
314     void ControlFlowChangeReturn();
315 
316     void Condition(const ir::AstNode *node, lexer::TokenType op, VReg lhs, class Label *ifFalse);
317     void Unary(const ir::AstNode *node, lexer::TokenType op, VReg operand);
318     void Binary(const ir::AstNode *node, lexer::TokenType op, VReg lhs);
319     void Equal(const ir::AstNode *node, VReg lhs);
320     void NotEqual(const ir::AstNode *node, VReg lhs);
321     void StrictEqual(const ir::AstNode *node, VReg lhs);
322     void StrictNotEqual(const ir::AstNode *node, VReg lhs);
323     void LessThan(const ir::AstNode *node, VReg lhs);
324     void LessEqual(const ir::AstNode *node, VReg lhs);
325     void GreaterThan(const ir::AstNode *node, VReg lhs);
326     void GreaterEqual(const ir::AstNode *node, VReg lhs);
327     void IsTrue(const ir::AstNode *node);
328 
329     void BranchIfUndefined(const ir::AstNode *node, class Label *target);
330     void BranchIfStrictUndefined(const ir::AstNode *node, class Label *target);
331     void BranchIfStrictNotUndefined(const ir::AstNode *node, class Label *target);
332     void BranchIfNotUndefined(const ir::AstNode *node, class Label *target);
333     void BranchIfHole(const ir::AstNode *node, class Label *target);
334     void BranchIfTrue(const ir::AstNode *node, class Label *target);
335     void BranchIfNotTrue(const ir::AstNode *node, class Label *target);
336     void BranchIfFalse(const ir::AstNode *node, class Label *target);
337     void BranchIfNotFalse(const ir::AstNode *node, class Label *target);
338     void BranchIfStrictNull(const ir::AstNode *node, class Label *target);
339 
340     void EmitThrow(const ir::AstNode *node);
341     void EmitRethrow(const ir::AstNode *node);
342     void EmitReturn(const ir::AstNode *node);
343     void EmitReturnUndefined(const ir::AstNode *node);
344     void ValidateClassDirectReturn(const ir::AstNode *node);
345     void DirectReturn(const ir::AstNode *node);
346     void ExplicitReturn(const ir::AstNode *node);
347     void ImplicitReturn(const ir::AstNode *node);
348     void EmitAwait(const ir::AstNode *node);
349 
350     void CallThis(const ir::AstNode *node, VReg startReg, size_t argCount);
351     void Call(const ir::AstNode *node, VReg startReg, size_t argCount);
352     void CallSpread(const ir::AstNode *node, VReg func, VReg thisReg, VReg args);
353     void SuperCall(const ir::AstNode *node, VReg startReg, size_t argCount);
354     void SuperCallSpread(const ir::AstNode *node, VReg vs);
355     void SuperCallForwardAllArgs(const ir::AstNode *node, VReg funcObj);
356     void NotifyConcurrentResult(const ir::AstNode *node);
357     void CallInit(const ir::AstNode *node, VReg thisReg);
358 
359     void NewObject(const ir::AstNode *node, VReg startReg, size_t argCount);
360     void DefineFunction(const ir::AstNode *node, const ir::ScriptFunction *realNode, const util::StringView &name);
361 
362     void TypeOf(const ir::AstNode *node);
363     void NewObjSpread(const ir::AstNode *node, VReg obj);
364     void GetUnmappedArgs(const ir::AstNode *node);
365 
366     void Negate(const ir::AstNode *node);
367     void ToNumber(const ir::AstNode *node, VReg arg);
368     void ToNumeric(const ir::AstNode *node, VReg arg);
369 
370     void CreateGeneratorObj(const ir::AstNode *node, VReg funcObj);
371     void ResumeGenerator(const ir::AstNode *node, VReg genObj);
372     void GetResumeMode(const ir::AstNode *node, VReg genObj);
373 
374     void AsyncFunctionEnter(const ir::AstNode *node);
375     void AsyncFunctionAwait(const ir::AstNode *node, VReg asyncFuncObj);
376     void AsyncFunctionResolve(const ir::AstNode *node, VReg asyncFuncObj);
377     void AsyncFunctionReject(const ir::AstNode *node, VReg asyncFuncObj);
378 
379     void GeneratorYield(const ir::AstNode *node, VReg genObj);
380     void GeneratorComplete(const ir::AstNode *node, VReg genObj);
381     void CreateAsyncGeneratorObj(const ir::AstNode *node, VReg funcObj);
382     void CreateIterResultObject(const ir::AstNode *node, VReg value, VReg done);
383     void SuspendGenerator(const ir::AstNode *node, VReg genObj);
384 
385     void AsyncGeneratorResolve(const ir::AstNode *node, VReg asyncGenObj, VReg value, VReg canSuspend);
386     void AsyncGeneratorReject(const ir::AstNode *node, VReg asyncGenObj);
387 
388     void GetTemplateObject(const ir::AstNode *node, VReg value);
389     void CopyRestArgs(const ir::AstNode *node, uint32_t index);
390 
391     void GetPropIterator(const ir::AstNode *node);
392     void GetNextPropName(const ir::AstNode *node, VReg iter);
393     void CreateEmptyObject(const ir::AstNode *node);
394     void CreateObjectWithBuffer(const ir::AstNode *node, uint32_t idx);
395     void SetObjectWithProto(const ir::AstNode *node, VReg proto, VReg obj);
396     void CopyDataProperties(const ir::AstNode *node, VReg dst);
397     void DefineGetterSetterByValue(const ir::AstNode *node, VReg obj, VReg name, VReg getter, VReg setter,
398                                    bool setName);
399     void CreateEmptyArray(const ir::AstNode *node);
400     void CreateArray(const ir::AstNode *node, const ArenaVector<ir::Expression *> &elements, VReg obj);
401     void CreateArrayWithBuffer(const ir::AstNode *node, uint32_t idx);
402     void StoreArraySpread(const ir::AstNode *node, VReg array, VReg index);
403 
404     void ThrowIfNotObject(const ir::AstNode *node, VReg obj);
405     void ThrowThrowNotExist(const ir::AstNode *node);
406     void GetIterator(const ir::AstNode *node);
407     void GetAsyncIterator(const ir::AstNode *node);
408 
409     void CreateObjectWithExcludedKeys(const ir::AstNode *node, VReg obj, VReg argStart, size_t argCount);
410     void ThrowObjectNonCoercible(const ir::AstNode *node);
411     void CloseIterator(const ir::AstNode *node, VReg iter);
412     void DefineClassWithBuffer(const ir::AstNode *node, const util::StringView &ctorId, int32_t litIdx, VReg base);
413     void DefineSendableClass(const ir::AstNode *node, const util::StringView &ctorId,
414                              int32_t litIdx, VReg base);
415     void LoadSendableClass(const ir::AstNode *node, int32_t level);
416 
417     void LoadLocalModuleVariable(const ir::AstNode *node, const binder::ModuleVariable *variable);
418     void LoadExternalModuleVariable(const ir::AstNode *node, const binder::ModuleVariable *variable);
419     void StoreModuleVariable(const ir::AstNode *node, const binder::ModuleVariable *variable);
420     void GetModuleNamespace(const ir::AstNode *node, uint32_t index);
421     void DynamicImportCall(const ir::AstNode *node);
422 
423     void StSuperByName(const ir::AstNode *node, VReg obj, const util::StringView &key);
424     void LdSuperByName(const ir::AstNode *node, VReg obj, const util::StringView &key);
425     void StSuperByValue(const ir::AstNode *node, VReg obj, VReg prop);
426     void LdSuperByValue(const ir::AstNode *node, VReg obj);
427     void StoreSuperProperty(const ir::AstNode *node, VReg obj, const Operand &prop);
428     void LoadSuperProperty(const ir::AstNode *node, VReg obj, const Operand &prop);
429 
430     void PopLexEnv(const ir::AstNode *node);
431     void GenDebugger(const ir::AstNode *node);
432     void NewLexicalEnv(const ir::AstNode *node, uint32_t num, binder::VariableScope *scope);
433     void NewLexEnv(const ir::AstNode *node, uint32_t num);
434     void NewSendableEnv(const ir::AstNode *node, uint32_t num);
435     void NewLexEnvWithScopeInfo(const ir::AstNode *node, uint32_t num, int32_t scopeInfoIdx);
436     void LoadLexicalVar(const ir::AstNode *node, uint32_t level, uint32_t slot);
437     void LoadSendableVar(const ir::AstNode *node, uint32_t level, uint32_t slot);
438     void LoadLexicalVar(const ir::AstNode *node, uint32_t level, uint32_t slot, const util::StringView &name);
439     void StoreLexicalVar(const ir::AstNode *node, uint32_t level, uint32_t slot);
440     void StoreSendableVar(const ir::AstNode *node, uint32_t level, uint32_t slot);
441     void StoreLexicalVar(const ir::AstNode *node, uint32_t level, uint32_t slot, const binder::LocalVariable *local);
442     void StoreLexicalVar(const ir::AstNode *node, uint32_t level, uint32_t slot, VReg value);
443 
444     void ThrowIfSuperNotCorrectCall(const ir::AstNode *node, int64_t num);
445     void ThrowUndefinedIfHole(const ir::AstNode *node, const util::StringView &name);
446     void ThrowConstAssignment(const ir::AstNode *node, const util::StringView &name);
447 
448     uint32_t TryDepth() const;
449     CatchTable *CreateCatchTable();
450     void SortCatchTables();
451 
452     void LoadObjByIndex(const ir::AstNode *node, VReg obj, int64_t index);
453     void LoadObjByValue(const ir::AstNode *node, VReg obj);
454 
455     void StoreObjByName(const ir::AstNode *node, VReg obj, const util::StringView &prop);
456     void StoreObjByIndex(const ir::AstNode *node, VReg obj, int64_t index);
457     void StoreObjByValue(const ir::AstNode *node, VReg obj, VReg prop);
458 
459     void DefineFieldByName(const ir::AstNode *node, VReg obj, const util::StringView &prop);
460     void DefineFieldByIndex(const ir::AstNode *node, VReg obj, int64_t index);
461     void DefineFieldByValue(const ir::AstNode *node, VReg obj, VReg prop);
462 
463     void StOwnByName(const ir::AstNode *node, VReg obj, const util::StringView &prop, bool nameSetting = false);
464     void StOwnByValue(const ir::AstNode *node, VReg obj, VReg prop, bool nameSetting = false);
465     void StOwnByIndex(const ir::AstNode *node, VReg obj, int64_t index);
466 
467     Operand ToNamedPropertyKey(const ir::Expression *prop, bool isComputed);
468     Operand ToPropertyKey(const ir::Expression *prop, bool isComputed);
469     VReg LoadPropertyKey(const ir::Expression *prop, bool isComputed);
470     void ToComputedPropertyKey(const ir::AstNode *node);
471 
472     void ReArrangeIc();
473 
474     void CreatePrivateProperty(const ir::AstNode *node, uint32_t num, int32_t bufIdx);
475     void TestIn(const ir::AstNode *node, uint32_t level, uint32_t slot);
476     void LoadPrivateProperty(const ir::AstNode *node, uint32_t level, uint32_t slot);
477     void StorePrivateProperty(const ir::AstNode *node, uint32_t level, uint32_t slot, VReg obj);
478     void ThrowTypeErrorIfFalse(const ir::AstNode *node, util::StringView str);
479     void ThrowTypeError(const ir::AstNode *node, util::StringView str);
480 
481     /*
482      * Since the [Function] is not implemented yet, We compile the test262's framework code
483      * which obtains the [global] Object as following into [LoadConst.Global] directly.
484      * ```
485      *    var __globalObject = Function("return this;")();
486      *    var __globalObject = new Function("return this;")();
487      * ```
488      */
489     bool TryCompileFunctionCallOrNewExpression(const ir::Expression *expr);
490 
SetFirstStmt(const ir::Statement * stmt)491     void SetFirstStmt(const ir::Statement *stmt)
492     {
493         debugInfo_.firstStmt = stmt;
494     }
495 
Unimplemented()496     [[noreturn]] static void Unimplemented()
497     {
498         throw Error(ErrorType::GENERIC, "Unimplemented code path");
499     }
500 
GetCurrentSlot()501     IcSizeType GetCurrentSlot() const
502     {
503         return currentSlot_;
504     }
505 
IncreaseCurrentSlot(ICSlot inc)506     void IncreaseCurrentSlot(ICSlot inc)
507     {
508         currentSlot_ += inc;
509     }
510 
ResetCurrentSlot(IcSizeType slotSize)511     void ResetCurrentSlot(IcSizeType slotSize)
512     {
513         currentSlot_ = slotSize;
514     }
515 
SetIcOverFlow()516     void SetIcOverFlow()
517     {
518         icOverFlow_ = true;
519     }
520 
IsIcOverFlow()521     bool IsIcOverFlow() const
522     {
523         return icOverFlow_;
524     }
525 
526 private:
527     ArenaAllocator *allocator_;
528     CompilerContext *context_;
529     FunctionBuilder *builder_;
530     DebugInfo debugInfo_;
531     binder::FunctionScope *topScope_;
532     binder::Scope *scope_;
533     const ir::AstNode *rootNode_;
534     ArenaList<IRNode *> insns_;
535     ArenaVector<CatchTable *> catchList_;
536     ArenaSet<util::StringView> strings_;
537     ArenaVector<LiteralBuffer *> buffStorage_;
538     EnvScope *envScope_ {};
539     DynamicContext *dynamicContext_ {};
540     OptionalChain *optionalChain_ {};
541     InlineCache ic_;
542     RegAllocator ra_;
543     IcSizeType currentSlot_ {0};
544 
545     uint32_t usedRegs_ {0};
546     uint32_t totalRegs_ {0};
547     friend class ScopeContext;
548     friend class RegScope;
549     friend class LocalRegScope;
550     friend class LoopRegScope;
551     friend class ParamRegScope;
552     friend class FunctionRegScope;
553     friend class EnvScope;
554     friend class LoopEnvScope;
555     friend class DynamicContext;
556     friend class OptionalChain;
557     size_t labelId_ {0};
558     panda::panda_file::FunctionKind funcKind_ {panda::panda_file::FunctionKind::NONE};
559     bool icOverFlow_ {false};
560     bool inSendable_ {false};
561 };
562 }  // namespace panda::es2panda::compiler
563 
564 #endif
565