1 //===- ASTReaderStmt.cpp - Stmt/Expr Deserialization ----------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Statement/expression deserialization.  This implements the
10 // ASTReader::ReadStmt method.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/Serialization/ASTReader.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/AttrIterator.h"
17 #include "clang/AST/Decl.h"
18 #include "clang/AST/DeclAccessPair.h"
19 #include "clang/AST/DeclCXX.h"
20 #include "clang/AST/DeclGroup.h"
21 #include "clang/AST/DeclObjC.h"
22 #include "clang/AST/DeclTemplate.h"
23 #include "clang/AST/DeclarationName.h"
24 #include "clang/AST/Expr.h"
25 #include "clang/AST/ExprCXX.h"
26 #include "clang/AST/ExprObjC.h"
27 #include "clang/AST/ExprOpenMP.h"
28 #include "clang/AST/NestedNameSpecifier.h"
29 #include "clang/AST/OpenMPClause.h"
30 #include "clang/AST/OperationKinds.h"
31 #include "clang/AST/Stmt.h"
32 #include "clang/AST/StmtCXX.h"
33 #include "clang/AST/StmtObjC.h"
34 #include "clang/AST/StmtOpenMP.h"
35 #include "clang/AST/StmtVisitor.h"
36 #include "clang/AST/TemplateBase.h"
37 #include "clang/AST/Type.h"
38 #include "clang/AST/UnresolvedSet.h"
39 #include "clang/Basic/CapturedStmt.h"
40 #include "clang/Basic/ExpressionTraits.h"
41 #include "clang/Basic/LLVM.h"
42 #include "clang/Basic/Lambda.h"
43 #include "clang/Basic/LangOptions.h"
44 #include "clang/Basic/OpenMPKinds.h"
45 #include "clang/Basic/OperatorKinds.h"
46 #include "clang/Basic/SourceLocation.h"
47 #include "clang/Basic/Specifiers.h"
48 #include "clang/Basic/TypeTraits.h"
49 #include "clang/Lex/Token.h"
50 #include "clang/Serialization/ASTBitCodes.h"
51 #include "llvm/ADT/DenseMap.h"
52 #include "llvm/ADT/SmallString.h"
53 #include "llvm/ADT/SmallVector.h"
54 #include "llvm/ADT/StringRef.h"
55 #include "llvm/Bitcode/BitstreamReader.h"
56 #include "llvm/Support/Casting.h"
57 #include "llvm/Support/ErrorHandling.h"
58 #include <algorithm>
59 #include <cassert>
60 #include <cstdint>
61 #include <string>
62 
63 using namespace clang;
64 using namespace serialization;
65 
66 namespace clang {
67 
68   class ASTStmtReader : public StmtVisitor<ASTStmtReader> {
69     friend class OMPClauseReader;
70 
71     ASTRecordReader &Record;
72     llvm::BitstreamCursor &DeclsCursor;
73 
74     SourceLocation ReadSourceLocation() {
75       return Record.readSourceLocation();
76     }
77 
78     SourceRange ReadSourceRange() {
79       return Record.readSourceRange();
80     }
81 
82     std::string ReadString() {
83       return Record.readString();
84     }
85 
86     TypeSourceInfo *GetTypeSourceInfo() {
87       return Record.getTypeSourceInfo();
88     }
89 
90     Decl *ReadDecl() {
91       return Record.readDecl();
92     }
93 
94     template<typename T>
95     T *ReadDeclAs() {
96       return Record.readDeclAs<T>();
97     }
98 
99     void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc,
100                                 DeclarationName Name) {
101       Record.readDeclarationNameLoc(DNLoc, Name);
102     }
103 
104     void ReadDeclarationNameInfo(DeclarationNameInfo &NameInfo) {
105       Record.readDeclarationNameInfo(NameInfo);
106     }
107 
108   public:
109     ASTStmtReader(ASTRecordReader &Record, llvm::BitstreamCursor &Cursor)
110         : Record(Record), DeclsCursor(Cursor) {}
111 
112     /// The number of record fields required for the Stmt class
113     /// itself.
114     static const unsigned NumStmtFields = 1;
115 
116     /// The number of record fields required for the Expr class
117     /// itself.
118     static const unsigned NumExprFields = NumStmtFields + 7;
119 
120     /// Read and initialize a ExplicitTemplateArgumentList structure.
121     void ReadTemplateKWAndArgsInfo(ASTTemplateKWAndArgsInfo &Args,
122                                    TemplateArgumentLoc *ArgsLocArray,
123                                    unsigned NumTemplateArgs);
124 
125     /// Read and initialize a ExplicitTemplateArgumentList structure.
126     void ReadExplicitTemplateArgumentList(ASTTemplateArgumentListInfo &ArgList,
127                                           unsigned NumTemplateArgs);
128 
129     void VisitStmt(Stmt *S);
130 #define STMT(Type, Base) \
131     void Visit##Type(Type *);
132 #include "clang/AST/StmtNodes.inc"
133   };
134 
135 } // namespace clang
136 
137 void ASTStmtReader::ReadTemplateKWAndArgsInfo(ASTTemplateKWAndArgsInfo &Args,
138                                               TemplateArgumentLoc *ArgsLocArray,
139                                               unsigned NumTemplateArgs) {
140   SourceLocation TemplateKWLoc = ReadSourceLocation();
141   TemplateArgumentListInfo ArgInfo;
142   ArgInfo.setLAngleLoc(ReadSourceLocation());
143   ArgInfo.setRAngleLoc(ReadSourceLocation());
144   for (unsigned i = 0; i != NumTemplateArgs; ++i)
145     ArgInfo.addArgument(Record.readTemplateArgumentLoc());
146   Args.initializeFrom(TemplateKWLoc, ArgInfo, ArgsLocArray);
147 }
148 
149 void ASTStmtReader::VisitStmt(Stmt *S) {
150   S->setIsOMPStructuredBlock(Record.readInt());
151   assert(Record.getIdx() == NumStmtFields && "Incorrect statement field count");
152 }
153 
154 void ASTStmtReader::VisitNullStmt(NullStmt *S) {
155   VisitStmt(S);
156   S->setSemiLoc(ReadSourceLocation());
157   S->NullStmtBits.HasLeadingEmptyMacro = Record.readInt();
158 }
159 
160 void ASTStmtReader::VisitCompoundStmt(CompoundStmt *S) {
161   VisitStmt(S);
162   SmallVector<Stmt *, 16> Stmts;
163   unsigned NumStmts = Record.readInt();
164   while (NumStmts--)
165     Stmts.push_back(Record.readSubStmt());
166   S->setStmts(Stmts);
167   S->CompoundStmtBits.LBraceLoc = ReadSourceLocation();
168   S->RBraceLoc = ReadSourceLocation();
169 }
170 
171 void ASTStmtReader::VisitSwitchCase(SwitchCase *S) {
172   VisitStmt(S);
173   Record.recordSwitchCaseID(S, Record.readInt());
174   S->setKeywordLoc(ReadSourceLocation());
175   S->setColonLoc(ReadSourceLocation());
176 }
177 
178 void ASTStmtReader::VisitCaseStmt(CaseStmt *S) {
179   VisitSwitchCase(S);
180   bool CaseStmtIsGNURange = Record.readInt();
181   S->setLHS(Record.readSubExpr());
182   S->setSubStmt(Record.readSubStmt());
183   if (CaseStmtIsGNURange) {
184     S->setRHS(Record.readSubExpr());
185     S->setEllipsisLoc(ReadSourceLocation());
186   }
187 }
188 
189 void ASTStmtReader::VisitDefaultStmt(DefaultStmt *S) {
190   VisitSwitchCase(S);
191   S->setSubStmt(Record.readSubStmt());
192 }
193 
194 void ASTStmtReader::VisitLabelStmt(LabelStmt *S) {
195   VisitStmt(S);
196   auto *LD = ReadDeclAs<LabelDecl>();
197   LD->setStmt(S);
198   S->setDecl(LD);
199   S->setSubStmt(Record.readSubStmt());
200   S->setIdentLoc(ReadSourceLocation());
201 }
202 
203 void ASTStmtReader::VisitAttributedStmt(AttributedStmt *S) {
204   VisitStmt(S);
205   // NumAttrs in AttributedStmt is set when creating an empty
206   // AttributedStmt in AttributedStmt::CreateEmpty, since it is needed
207   // to allocate the right amount of space for the trailing Attr *.
208   uint64_t NumAttrs = Record.readInt();
209   AttrVec Attrs;
210   Record.readAttributes(Attrs);
211   (void)NumAttrs;
212   assert(NumAttrs == S->AttributedStmtBits.NumAttrs);
213   assert(NumAttrs == Attrs.size());
214   std::copy(Attrs.begin(), Attrs.end(), S->getAttrArrayPtr());
215   S->SubStmt = Record.readSubStmt();
216   S->AttributedStmtBits.AttrLoc = ReadSourceLocation();
217 }
218 
219 void ASTStmtReader::VisitIfStmt(IfStmt *S) {
220   VisitStmt(S);
221 
222   S->setConstexpr(Record.readInt());
223   bool HasElse = Record.readInt();
224   bool HasVar = Record.readInt();
225   bool HasInit = Record.readInt();
226 
227   S->setCond(Record.readSubExpr());
228   S->setThen(Record.readSubStmt());
229   if (HasElse)
230     S->setElse(Record.readSubStmt());
231   if (HasVar)
232     S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
233   if (HasInit)
234     S->setInit(Record.readSubStmt());
235 
236   S->setIfLoc(ReadSourceLocation());
237   if (HasElse)
238     S->setElseLoc(ReadSourceLocation());
239 }
240 
241 void ASTStmtReader::VisitSwitchStmt(SwitchStmt *S) {
242   VisitStmt(S);
243 
244   bool HasInit = Record.readInt();
245   bool HasVar = Record.readInt();
246   bool AllEnumCasesCovered = Record.readInt();
247   if (AllEnumCasesCovered)
248     S->setAllEnumCasesCovered();
249 
250   S->setCond(Record.readSubExpr());
251   S->setBody(Record.readSubStmt());
252   if (HasInit)
253     S->setInit(Record.readSubStmt());
254   if (HasVar)
255     S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
256 
257   S->setSwitchLoc(ReadSourceLocation());
258 
259   SwitchCase *PrevSC = nullptr;
260   for (auto E = Record.size(); Record.getIdx() != E; ) {
261     SwitchCase *SC = Record.getSwitchCaseWithID(Record.readInt());
262     if (PrevSC)
263       PrevSC->setNextSwitchCase(SC);
264     else
265       S->setSwitchCaseList(SC);
266 
267     PrevSC = SC;
268   }
269 }
270 
271 void ASTStmtReader::VisitWhileStmt(WhileStmt *S) {
272   VisitStmt(S);
273 
274   bool HasVar = Record.readInt();
275 
276   S->setCond(Record.readSubExpr());
277   S->setBody(Record.readSubStmt());
278   if (HasVar)
279     S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
280 
281   S->setWhileLoc(ReadSourceLocation());
282 }
283 
284 void ASTStmtReader::VisitDoStmt(DoStmt *S) {
285   VisitStmt(S);
286   S->setCond(Record.readSubExpr());
287   S->setBody(Record.readSubStmt());
288   S->setDoLoc(ReadSourceLocation());
289   S->setWhileLoc(ReadSourceLocation());
290   S->setRParenLoc(ReadSourceLocation());
291 }
292 
293 void ASTStmtReader::VisitForStmt(ForStmt *S) {
294   VisitStmt(S);
295   S->setInit(Record.readSubStmt());
296   S->setCond(Record.readSubExpr());
297   S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
298   S->setInc(Record.readSubExpr());
299   S->setBody(Record.readSubStmt());
300   S->setForLoc(ReadSourceLocation());
301   S->setLParenLoc(ReadSourceLocation());
302   S->setRParenLoc(ReadSourceLocation());
303 }
304 
305 void ASTStmtReader::VisitGotoStmt(GotoStmt *S) {
306   VisitStmt(S);
307   S->setLabel(ReadDeclAs<LabelDecl>());
308   S->setGotoLoc(ReadSourceLocation());
309   S->setLabelLoc(ReadSourceLocation());
310 }
311 
312 void ASTStmtReader::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
313   VisitStmt(S);
314   S->setGotoLoc(ReadSourceLocation());
315   S->setStarLoc(ReadSourceLocation());
316   S->setTarget(Record.readSubExpr());
317 }
318 
319 void ASTStmtReader::VisitContinueStmt(ContinueStmt *S) {
320   VisitStmt(S);
321   S->setContinueLoc(ReadSourceLocation());
322 }
323 
324 void ASTStmtReader::VisitBreakStmt(BreakStmt *S) {
325   VisitStmt(S);
326   S->setBreakLoc(ReadSourceLocation());
327 }
328 
329 void ASTStmtReader::VisitReturnStmt(ReturnStmt *S) {
330   VisitStmt(S);
331 
332   bool HasNRVOCandidate = Record.readInt();
333 
334   S->setRetValue(Record.readSubExpr());
335   if (HasNRVOCandidate)
336     S->setNRVOCandidate(ReadDeclAs<VarDecl>());
337 
338   S->setReturnLoc(ReadSourceLocation());
339 }
340 
341 void ASTStmtReader::VisitDeclStmt(DeclStmt *S) {
342   VisitStmt(S);
343   S->setStartLoc(ReadSourceLocation());
344   S->setEndLoc(ReadSourceLocation());
345 
346   if (Record.size() - Record.getIdx() == 1) {
347     // Single declaration
348     S->setDeclGroup(DeclGroupRef(ReadDecl()));
349   } else {
350     SmallVector<Decl *, 16> Decls;
351     int N = Record.size() - Record.getIdx();
352     Decls.reserve(N);
353     for (int I = 0; I < N; ++I)
354       Decls.push_back(ReadDecl());
355     S->setDeclGroup(DeclGroupRef(DeclGroup::Create(Record.getContext(),
356                                                    Decls.data(),
357                                                    Decls.size())));
358   }
359 }
360 
361 void ASTStmtReader::VisitAsmStmt(AsmStmt *S) {
362   VisitStmt(S);
363   S->NumOutputs = Record.readInt();
364   S->NumInputs = Record.readInt();
365   S->NumClobbers = Record.readInt();
366   S->setAsmLoc(ReadSourceLocation());
367   S->setVolatile(Record.readInt());
368   S->setSimple(Record.readInt());
369 }
370 
371 void ASTStmtReader::VisitGCCAsmStmt(GCCAsmStmt *S) {
372   VisitAsmStmt(S);
373   S->setRParenLoc(ReadSourceLocation());
374   S->setAsmString(cast_or_null<StringLiteral>(Record.readSubStmt()));
375 
376   unsigned NumOutputs = S->getNumOutputs();
377   unsigned NumInputs = S->getNumInputs();
378   unsigned NumClobbers = S->getNumClobbers();
379 
380   // Outputs and inputs
381   SmallVector<IdentifierInfo *, 16> Names;
382   SmallVector<StringLiteral*, 16> Constraints;
383   SmallVector<Stmt*, 16> Exprs;
384   for (unsigned I = 0, N = NumOutputs + NumInputs; I != N; ++I) {
385     Names.push_back(Record.getIdentifierInfo());
386     Constraints.push_back(cast_or_null<StringLiteral>(Record.readSubStmt()));
387     Exprs.push_back(Record.readSubStmt());
388   }
389 
390   // Constraints
391   SmallVector<StringLiteral*, 16> Clobbers;
392   for (unsigned I = 0; I != NumClobbers; ++I)
393     Clobbers.push_back(cast_or_null<StringLiteral>(Record.readSubStmt()));
394 
395   S->setOutputsAndInputsAndClobbers(Record.getContext(),
396                                     Names.data(), Constraints.data(),
397                                     Exprs.data(), NumOutputs, NumInputs,
398                                     Clobbers.data(), NumClobbers);
399 }
400 
401 void ASTStmtReader::VisitMSAsmStmt(MSAsmStmt *S) {
402   VisitAsmStmt(S);
403   S->LBraceLoc = ReadSourceLocation();
404   S->EndLoc = ReadSourceLocation();
405   S->NumAsmToks = Record.readInt();
406   std::string AsmStr = ReadString();
407 
408   // Read the tokens.
409   SmallVector<Token, 16> AsmToks;
410   AsmToks.reserve(S->NumAsmToks);
411   for (unsigned i = 0, e = S->NumAsmToks; i != e; ++i) {
412     AsmToks.push_back(Record.readToken());
413   }
414 
415   // The calls to reserve() for the FooData vectors are mandatory to
416   // prevent dead StringRefs in the Foo vectors.
417 
418   // Read the clobbers.
419   SmallVector<std::string, 16> ClobbersData;
420   SmallVector<StringRef, 16> Clobbers;
421   ClobbersData.reserve(S->NumClobbers);
422   Clobbers.reserve(S->NumClobbers);
423   for (unsigned i = 0, e = S->NumClobbers; i != e; ++i) {
424     ClobbersData.push_back(ReadString());
425     Clobbers.push_back(ClobbersData.back());
426   }
427 
428   // Read the operands.
429   unsigned NumOperands = S->NumOutputs + S->NumInputs;
430   SmallVector<Expr*, 16> Exprs;
431   SmallVector<std::string, 16> ConstraintsData;
432   SmallVector<StringRef, 16> Constraints;
433   Exprs.reserve(NumOperands);
434   ConstraintsData.reserve(NumOperands);
435   Constraints.reserve(NumOperands);
436   for (unsigned i = 0; i != NumOperands; ++i) {
437     Exprs.push_back(cast<Expr>(Record.readSubStmt()));
438     ConstraintsData.push_back(ReadString());
439     Constraints.push_back(ConstraintsData.back());
440   }
441 
442   S->initialize(Record.getContext(), AsmStr, AsmToks,
443                 Constraints, Exprs, Clobbers);
444 }
445 
446 void ASTStmtReader::VisitCoroutineBodyStmt(CoroutineBodyStmt *S) {
447   VisitStmt(S);
448   assert(Record.peekInt() == S->NumParams);
449   Record.skipInts(1);
450   auto *StoredStmts = S->getStoredStmts();
451   for (unsigned i = 0;
452        i < CoroutineBodyStmt::SubStmt::FirstParamMove + S->NumParams; ++i)
453     StoredStmts[i] = Record.readSubStmt();
454 }
455 
456 void ASTStmtReader::VisitCoreturnStmt(CoreturnStmt *S) {
457   VisitStmt(S);
458   S->CoreturnLoc = Record.readSourceLocation();
459   for (auto &SubStmt: S->SubStmts)
460     SubStmt = Record.readSubStmt();
461   S->IsImplicit = Record.readInt() != 0;
462 }
463 
464 void ASTStmtReader::VisitCoawaitExpr(CoawaitExpr *E) {
465   VisitExpr(E);
466   E->KeywordLoc = ReadSourceLocation();
467   for (auto &SubExpr: E->SubExprs)
468     SubExpr = Record.readSubStmt();
469   E->OpaqueValue = cast_or_null<OpaqueValueExpr>(Record.readSubStmt());
470   E->setIsImplicit(Record.readInt() != 0);
471 }
472 
473 void ASTStmtReader::VisitCoyieldExpr(CoyieldExpr *E) {
474   VisitExpr(E);
475   E->KeywordLoc = ReadSourceLocation();
476   for (auto &SubExpr: E->SubExprs)
477     SubExpr = Record.readSubStmt();
478   E->OpaqueValue = cast_or_null<OpaqueValueExpr>(Record.readSubStmt());
479 }
480 
481 void ASTStmtReader::VisitDependentCoawaitExpr(DependentCoawaitExpr *E) {
482   VisitExpr(E);
483   E->KeywordLoc = ReadSourceLocation();
484   for (auto &SubExpr: E->SubExprs)
485     SubExpr = Record.readSubStmt();
486 }
487 
488 void ASTStmtReader::VisitCapturedStmt(CapturedStmt *S) {
489   VisitStmt(S);
490   Record.skipInts(1);
491   S->setCapturedDecl(ReadDeclAs<CapturedDecl>());
492   S->setCapturedRegionKind(static_cast<CapturedRegionKind>(Record.readInt()));
493   S->setCapturedRecordDecl(ReadDeclAs<RecordDecl>());
494 
495   // Capture inits
496   for (CapturedStmt::capture_init_iterator I = S->capture_init_begin(),
497                                            E = S->capture_init_end();
498        I != E; ++I)
499     *I = Record.readSubExpr();
500 
501   // Body
502   S->setCapturedStmt(Record.readSubStmt());
503   S->getCapturedDecl()->setBody(S->getCapturedStmt());
504 
505   // Captures
506   for (auto &I : S->captures()) {
507     I.VarAndKind.setPointer(ReadDeclAs<VarDecl>());
508     I.VarAndKind.setInt(
509         static_cast<CapturedStmt::VariableCaptureKind>(Record.readInt()));
510     I.Loc = ReadSourceLocation();
511   }
512 }
513 
514 void ASTStmtReader::VisitExpr(Expr *E) {
515   VisitStmt(E);
516   E->setType(Record.readType());
517   E->setTypeDependent(Record.readInt());
518   E->setValueDependent(Record.readInt());
519   E->setInstantiationDependent(Record.readInt());
520   E->ExprBits.ContainsUnexpandedParameterPack = Record.readInt();
521   E->setValueKind(static_cast<ExprValueKind>(Record.readInt()));
522   E->setObjectKind(static_cast<ExprObjectKind>(Record.readInt()));
523   assert(Record.getIdx() == NumExprFields &&
524          "Incorrect expression field count");
525 }
526 
527 void ASTStmtReader::VisitConstantExpr(ConstantExpr *E) {
528   VisitExpr(E);
529   E->setSubExpr(Record.readSubExpr());
530 }
531 
532 void ASTStmtReader::VisitPredefinedExpr(PredefinedExpr *E) {
533   VisitExpr(E);
534   bool HasFunctionName = Record.readInt();
535   E->PredefinedExprBits.HasFunctionName = HasFunctionName;
536   E->PredefinedExprBits.Kind = Record.readInt();
537   E->setLocation(ReadSourceLocation());
538   if (HasFunctionName)
539     E->setFunctionName(cast<StringLiteral>(Record.readSubExpr()));
540 }
541 
542 void ASTStmtReader::VisitDeclRefExpr(DeclRefExpr *E) {
543   VisitExpr(E);
544 
545   E->DeclRefExprBits.HasQualifier = Record.readInt();
546   E->DeclRefExprBits.HasFoundDecl = Record.readInt();
547   E->DeclRefExprBits.HasTemplateKWAndArgsInfo = Record.readInt();
548   E->DeclRefExprBits.HadMultipleCandidates = Record.readInt();
549   E->DeclRefExprBits.RefersToEnclosingVariableOrCapture = Record.readInt();
550   unsigned NumTemplateArgs = 0;
551   if (E->hasTemplateKWAndArgsInfo())
552     NumTemplateArgs = Record.readInt();
553 
554   if (E->hasQualifier())
555     new (E->getTrailingObjects<NestedNameSpecifierLoc>())
556         NestedNameSpecifierLoc(Record.readNestedNameSpecifierLoc());
557 
558   if (E->hasFoundDecl())
559     *E->getTrailingObjects<NamedDecl *>() = ReadDeclAs<NamedDecl>();
560 
561   if (E->hasTemplateKWAndArgsInfo())
562     ReadTemplateKWAndArgsInfo(
563         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
564         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
565 
566   E->setDecl(ReadDeclAs<ValueDecl>());
567   E->setLocation(ReadSourceLocation());
568   ReadDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName());
569 }
570 
571 void ASTStmtReader::VisitIntegerLiteral(IntegerLiteral *E) {
572   VisitExpr(E);
573   E->setLocation(ReadSourceLocation());
574   E->setValue(Record.getContext(), Record.readAPInt());
575 }
576 
577 void ASTStmtReader::VisitFixedPointLiteral(FixedPointLiteral *E) {
578   VisitExpr(E);
579   E->setLocation(ReadSourceLocation());
580   E->setValue(Record.getContext(), Record.readAPInt());
581 }
582 
583 void ASTStmtReader::VisitFloatingLiteral(FloatingLiteral *E) {
584   VisitExpr(E);
585   E->setRawSemantics(static_cast<Stmt::APFloatSemantics>(Record.readInt()));
586   E->setExact(Record.readInt());
587   E->setValue(Record.getContext(), Record.readAPFloat(E->getSemantics()));
588   E->setLocation(ReadSourceLocation());
589 }
590 
591 void ASTStmtReader::VisitImaginaryLiteral(ImaginaryLiteral *E) {
592   VisitExpr(E);
593   E->setSubExpr(Record.readSubExpr());
594 }
595 
596 void ASTStmtReader::VisitStringLiteral(StringLiteral *E) {
597   VisitExpr(E);
598 
599   // NumConcatenated, Length and CharByteWidth are set by the empty
600   // ctor since they are needed to allocate storage for the trailing objects.
601   unsigned NumConcatenated = Record.readInt();
602   unsigned Length = Record.readInt();
603   unsigned CharByteWidth = Record.readInt();
604   assert((NumConcatenated == E->getNumConcatenated()) &&
605          "Wrong number of concatenated tokens!");
606   assert((Length == E->getLength()) && "Wrong Length!");
607   assert((CharByteWidth == E->getCharByteWidth()) && "Wrong character width!");
608   E->StringLiteralBits.Kind = Record.readInt();
609   E->StringLiteralBits.IsPascal = Record.readInt();
610 
611   // The character width is originally computed via mapCharByteWidth.
612   // Check that the deserialized character width is consistant with the result
613   // of calling mapCharByteWidth.
614   assert((CharByteWidth ==
615           StringLiteral::mapCharByteWidth(Record.getContext().getTargetInfo(),
616                                           E->getKind())) &&
617          "Wrong character width!");
618 
619   // Deserialize the trailing array of SourceLocation.
620   for (unsigned I = 0; I < NumConcatenated; ++I)
621     E->setStrTokenLoc(I, ReadSourceLocation());
622 
623   // Deserialize the trailing array of char holding the string data.
624   char *StrData = E->getStrDataAsChar();
625   for (unsigned I = 0; I < Length * CharByteWidth; ++I)
626     StrData[I] = Record.readInt();
627 }
628 
629 void ASTStmtReader::VisitCharacterLiteral(CharacterLiteral *E) {
630   VisitExpr(E);
631   E->setValue(Record.readInt());
632   E->setLocation(ReadSourceLocation());
633   E->setKind(static_cast<CharacterLiteral::CharacterKind>(Record.readInt()));
634 }
635 
636 void ASTStmtReader::VisitParenExpr(ParenExpr *E) {
637   VisitExpr(E);
638   E->setLParen(ReadSourceLocation());
639   E->setRParen(ReadSourceLocation());
640   E->setSubExpr(Record.readSubExpr());
641 }
642 
643 void ASTStmtReader::VisitParenListExpr(ParenListExpr *E) {
644   VisitExpr(E);
645   unsigned NumExprs = Record.readInt();
646   assert((NumExprs == E->getNumExprs()) && "Wrong NumExprs!");
647   for (unsigned I = 0; I != NumExprs; ++I)
648     E->getTrailingObjects<Stmt *>()[I] = Record.readSubStmt();
649   E->LParenLoc = ReadSourceLocation();
650   E->RParenLoc = ReadSourceLocation();
651 }
652 
653 void ASTStmtReader::VisitUnaryOperator(UnaryOperator *E) {
654   VisitExpr(E);
655   E->setSubExpr(Record.readSubExpr());
656   E->setOpcode((UnaryOperator::Opcode)Record.readInt());
657   E->setOperatorLoc(ReadSourceLocation());
658   E->setCanOverflow(Record.readInt());
659 }
660 
661 void ASTStmtReader::VisitOffsetOfExpr(OffsetOfExpr *E) {
662   VisitExpr(E);
663   assert(E->getNumComponents() == Record.peekInt());
664   Record.skipInts(1);
665   assert(E->getNumExpressions() == Record.peekInt());
666   Record.skipInts(1);
667   E->setOperatorLoc(ReadSourceLocation());
668   E->setRParenLoc(ReadSourceLocation());
669   E->setTypeSourceInfo(GetTypeSourceInfo());
670   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
671     auto Kind = static_cast<OffsetOfNode::Kind>(Record.readInt());
672     SourceLocation Start = ReadSourceLocation();
673     SourceLocation End = ReadSourceLocation();
674     switch (Kind) {
675     case OffsetOfNode::Array:
676       E->setComponent(I, OffsetOfNode(Start, Record.readInt(), End));
677       break;
678 
679     case OffsetOfNode::Field:
680       E->setComponent(
681           I, OffsetOfNode(Start, ReadDeclAs<FieldDecl>(), End));
682       break;
683 
684     case OffsetOfNode::Identifier:
685       E->setComponent(
686           I,
687           OffsetOfNode(Start, Record.getIdentifierInfo(), End));
688       break;
689 
690     case OffsetOfNode::Base: {
691       auto *Base = new (Record.getContext()) CXXBaseSpecifier();
692       *Base = Record.readCXXBaseSpecifier();
693       E->setComponent(I, OffsetOfNode(Base));
694       break;
695     }
696     }
697   }
698 
699   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
700     E->setIndexExpr(I, Record.readSubExpr());
701 }
702 
703 void ASTStmtReader::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
704   VisitExpr(E);
705   E->setKind(static_cast<UnaryExprOrTypeTrait>(Record.readInt()));
706   if (Record.peekInt() == 0) {
707     E->setArgument(Record.readSubExpr());
708     Record.skipInts(1);
709   } else {
710     E->setArgument(GetTypeSourceInfo());
711   }
712   E->setOperatorLoc(ReadSourceLocation());
713   E->setRParenLoc(ReadSourceLocation());
714 }
715 
716 void ASTStmtReader::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
717   VisitExpr(E);
718   E->setLHS(Record.readSubExpr());
719   E->setRHS(Record.readSubExpr());
720   E->setRBracketLoc(ReadSourceLocation());
721 }
722 
723 void ASTStmtReader::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
724   VisitExpr(E);
725   E->setBase(Record.readSubExpr());
726   E->setLowerBound(Record.readSubExpr());
727   E->setLength(Record.readSubExpr());
728   E->setColonLoc(ReadSourceLocation());
729   E->setRBracketLoc(ReadSourceLocation());
730 }
731 
732 void ASTStmtReader::VisitCallExpr(CallExpr *E) {
733   VisitExpr(E);
734   unsigned NumArgs = Record.readInt();
735   assert((NumArgs == E->getNumArgs()) && "Wrong NumArgs!");
736   E->setRParenLoc(ReadSourceLocation());
737   E->setCallee(Record.readSubExpr());
738   for (unsigned I = 0; I != NumArgs; ++I)
739     E->setArg(I, Record.readSubExpr());
740   E->setADLCallKind(static_cast<CallExpr::ADLCallKind>(Record.readInt()));
741 }
742 
743 void ASTStmtReader::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
744   VisitCallExpr(E);
745 }
746 
747 void ASTStmtReader::VisitMemberExpr(MemberExpr *E) {
748   // Don't call VisitExpr, this is fully initialized at creation.
749   assert(E->getStmtClass() == Stmt::MemberExprClass &&
750          "It's a subclass, we must advance Idx!");
751 }
752 
753 void ASTStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
754   VisitExpr(E);
755   E->setBase(Record.readSubExpr());
756   E->setIsaMemberLoc(ReadSourceLocation());
757   E->setOpLoc(ReadSourceLocation());
758   E->setArrow(Record.readInt());
759 }
760 
761 void ASTStmtReader::
762 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
763   VisitExpr(E);
764   E->Operand = Record.readSubExpr();
765   E->setShouldCopy(Record.readInt());
766 }
767 
768 void ASTStmtReader::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
769   VisitExplicitCastExpr(E);
770   E->LParenLoc = ReadSourceLocation();
771   E->BridgeKeywordLoc = ReadSourceLocation();
772   E->Kind = Record.readInt();
773 }
774 
775 void ASTStmtReader::VisitCastExpr(CastExpr *E) {
776   VisitExpr(E);
777   unsigned NumBaseSpecs = Record.readInt();
778   assert(NumBaseSpecs == E->path_size());
779   E->setSubExpr(Record.readSubExpr());
780   E->setCastKind((CastKind)Record.readInt());
781   CastExpr::path_iterator BaseI = E->path_begin();
782   while (NumBaseSpecs--) {
783     auto *BaseSpec = new (Record.getContext()) CXXBaseSpecifier;
784     *BaseSpec = Record.readCXXBaseSpecifier();
785     *BaseI++ = BaseSpec;
786   }
787 }
788 
789 void ASTStmtReader::VisitBinaryOperator(BinaryOperator *E) {
790   VisitExpr(E);
791   E->setLHS(Record.readSubExpr());
792   E->setRHS(Record.readSubExpr());
793   E->setOpcode((BinaryOperator::Opcode)Record.readInt());
794   E->setOperatorLoc(ReadSourceLocation());
795   E->setFPFeatures(FPOptions(Record.readInt()));
796 }
797 
798 void ASTStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
799   VisitBinaryOperator(E);
800   E->setComputationLHSType(Record.readType());
801   E->setComputationResultType(Record.readType());
802 }
803 
804 void ASTStmtReader::VisitConditionalOperator(ConditionalOperator *E) {
805   VisitExpr(E);
806   E->SubExprs[ConditionalOperator::COND] = Record.readSubExpr();
807   E->SubExprs[ConditionalOperator::LHS] = Record.readSubExpr();
808   E->SubExprs[ConditionalOperator::RHS] = Record.readSubExpr();
809   E->QuestionLoc = ReadSourceLocation();
810   E->ColonLoc = ReadSourceLocation();
811 }
812 
813 void
814 ASTStmtReader::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
815   VisitExpr(E);
816   E->OpaqueValue = cast<OpaqueValueExpr>(Record.readSubExpr());
817   E->SubExprs[BinaryConditionalOperator::COMMON] = Record.readSubExpr();
818   E->SubExprs[BinaryConditionalOperator::COND] = Record.readSubExpr();
819   E->SubExprs[BinaryConditionalOperator::LHS] = Record.readSubExpr();
820   E->SubExprs[BinaryConditionalOperator::RHS] = Record.readSubExpr();
821   E->QuestionLoc = ReadSourceLocation();
822   E->ColonLoc = ReadSourceLocation();
823 }
824 
825 void ASTStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
826   VisitCastExpr(E);
827   E->setIsPartOfExplicitCast(Record.readInt());
828 }
829 
830 void ASTStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {
831   VisitCastExpr(E);
832   E->setTypeInfoAsWritten(GetTypeSourceInfo());
833 }
834 
835 void ASTStmtReader::VisitCStyleCastExpr(CStyleCastExpr *E) {
836   VisitExplicitCastExpr(E);
837   E->setLParenLoc(ReadSourceLocation());
838   E->setRParenLoc(ReadSourceLocation());
839 }
840 
841 void ASTStmtReader::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
842   VisitExpr(E);
843   E->setLParenLoc(ReadSourceLocation());
844   E->setTypeSourceInfo(GetTypeSourceInfo());
845   E->setInitializer(Record.readSubExpr());
846   E->setFileScope(Record.readInt());
847 }
848 
849 void ASTStmtReader::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
850   VisitExpr(E);
851   E->setBase(Record.readSubExpr());
852   E->setAccessor(Record.getIdentifierInfo());
853   E->setAccessorLoc(ReadSourceLocation());
854 }
855 
856 void ASTStmtReader::VisitInitListExpr(InitListExpr *E) {
857   VisitExpr(E);
858   if (auto *SyntForm = cast_or_null<InitListExpr>(Record.readSubStmt()))
859     E->setSyntacticForm(SyntForm);
860   E->setLBraceLoc(ReadSourceLocation());
861   E->setRBraceLoc(ReadSourceLocation());
862   bool isArrayFiller = Record.readInt();
863   Expr *filler = nullptr;
864   if (isArrayFiller) {
865     filler = Record.readSubExpr();
866     E->ArrayFillerOrUnionFieldInit = filler;
867   } else
868     E->ArrayFillerOrUnionFieldInit = ReadDeclAs<FieldDecl>();
869   E->sawArrayRangeDesignator(Record.readInt());
870   unsigned NumInits = Record.readInt();
871   E->reserveInits(Record.getContext(), NumInits);
872   if (isArrayFiller) {
873     for (unsigned I = 0; I != NumInits; ++I) {
874       Expr *init = Record.readSubExpr();
875       E->updateInit(Record.getContext(), I, init ? init : filler);
876     }
877   } else {
878     for (unsigned I = 0; I != NumInits; ++I)
879       E->updateInit(Record.getContext(), I, Record.readSubExpr());
880   }
881 }
882 
883 void ASTStmtReader::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
884   using Designator = DesignatedInitExpr::Designator;
885 
886   VisitExpr(E);
887   unsigned NumSubExprs = Record.readInt();
888   assert(NumSubExprs == E->getNumSubExprs() && "Wrong number of subexprs");
889   for (unsigned I = 0; I != NumSubExprs; ++I)
890     E->setSubExpr(I, Record.readSubExpr());
891   E->setEqualOrColonLoc(ReadSourceLocation());
892   E->setGNUSyntax(Record.readInt());
893 
894   SmallVector<Designator, 4> Designators;
895   while (Record.getIdx() < Record.size()) {
896     switch ((DesignatorTypes)Record.readInt()) {
897     case DESIG_FIELD_DECL: {
898       auto *Field = ReadDeclAs<FieldDecl>();
899       SourceLocation DotLoc = ReadSourceLocation();
900       SourceLocation FieldLoc = ReadSourceLocation();
901       Designators.push_back(Designator(Field->getIdentifier(), DotLoc,
902                                        FieldLoc));
903       Designators.back().setField(Field);
904       break;
905     }
906 
907     case DESIG_FIELD_NAME: {
908       const IdentifierInfo *Name = Record.getIdentifierInfo();
909       SourceLocation DotLoc = ReadSourceLocation();
910       SourceLocation FieldLoc = ReadSourceLocation();
911       Designators.push_back(Designator(Name, DotLoc, FieldLoc));
912       break;
913     }
914 
915     case DESIG_ARRAY: {
916       unsigned Index = Record.readInt();
917       SourceLocation LBracketLoc = ReadSourceLocation();
918       SourceLocation RBracketLoc = ReadSourceLocation();
919       Designators.push_back(Designator(Index, LBracketLoc, RBracketLoc));
920       break;
921     }
922 
923     case DESIG_ARRAY_RANGE: {
924       unsigned Index = Record.readInt();
925       SourceLocation LBracketLoc = ReadSourceLocation();
926       SourceLocation EllipsisLoc = ReadSourceLocation();
927       SourceLocation RBracketLoc = ReadSourceLocation();
928       Designators.push_back(Designator(Index, LBracketLoc, EllipsisLoc,
929                                        RBracketLoc));
930       break;
931     }
932     }
933   }
934   E->setDesignators(Record.getContext(),
935                     Designators.data(), Designators.size());
936 }
937 
938 void ASTStmtReader::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
939   VisitExpr(E);
940   E->setBase(Record.readSubExpr());
941   E->setUpdater(Record.readSubExpr());
942 }
943 
944 void ASTStmtReader::VisitNoInitExpr(NoInitExpr *E) {
945   VisitExpr(E);
946 }
947 
948 void ASTStmtReader::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
949   VisitExpr(E);
950   E->SubExprs[0] = Record.readSubExpr();
951   E->SubExprs[1] = Record.readSubExpr();
952 }
953 
954 void ASTStmtReader::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
955   VisitExpr(E);
956 }
957 
958 void ASTStmtReader::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
959   VisitExpr(E);
960 }
961 
962 void ASTStmtReader::VisitVAArgExpr(VAArgExpr *E) {
963   VisitExpr(E);
964   E->setSubExpr(Record.readSubExpr());
965   E->setWrittenTypeInfo(GetTypeSourceInfo());
966   E->setBuiltinLoc(ReadSourceLocation());
967   E->setRParenLoc(ReadSourceLocation());
968   E->setIsMicrosoftABI(Record.readInt());
969 }
970 
971 void ASTStmtReader::VisitAddrLabelExpr(AddrLabelExpr *E) {
972   VisitExpr(E);
973   E->setAmpAmpLoc(ReadSourceLocation());
974   E->setLabelLoc(ReadSourceLocation());
975   E->setLabel(ReadDeclAs<LabelDecl>());
976 }
977 
978 void ASTStmtReader::VisitStmtExpr(StmtExpr *E) {
979   VisitExpr(E);
980   E->setLParenLoc(ReadSourceLocation());
981   E->setRParenLoc(ReadSourceLocation());
982   E->setSubStmt(cast_or_null<CompoundStmt>(Record.readSubStmt()));
983 }
984 
985 void ASTStmtReader::VisitChooseExpr(ChooseExpr *E) {
986   VisitExpr(E);
987   E->setCond(Record.readSubExpr());
988   E->setLHS(Record.readSubExpr());
989   E->setRHS(Record.readSubExpr());
990   E->setBuiltinLoc(ReadSourceLocation());
991   E->setRParenLoc(ReadSourceLocation());
992   E->setIsConditionTrue(Record.readInt());
993 }
994 
995 void ASTStmtReader::VisitGNUNullExpr(GNUNullExpr *E) {
996   VisitExpr(E);
997   E->setTokenLocation(ReadSourceLocation());
998 }
999 
1000 void ASTStmtReader::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
1001   VisitExpr(E);
1002   SmallVector<Expr *, 16> Exprs;
1003   unsigned NumExprs = Record.readInt();
1004   while (NumExprs--)
1005     Exprs.push_back(Record.readSubExpr());
1006   E->setExprs(Record.getContext(), Exprs);
1007   E->setBuiltinLoc(ReadSourceLocation());
1008   E->setRParenLoc(ReadSourceLocation());
1009 }
1010 
1011 void ASTStmtReader::VisitConvertVectorExpr(ConvertVectorExpr *E) {
1012   VisitExpr(E);
1013   E->BuiltinLoc = ReadSourceLocation();
1014   E->RParenLoc = ReadSourceLocation();
1015   E->TInfo = GetTypeSourceInfo();
1016   E->SrcExpr = Record.readSubExpr();
1017 }
1018 
1019 void ASTStmtReader::VisitBlockExpr(BlockExpr *E) {
1020   VisitExpr(E);
1021   E->setBlockDecl(ReadDeclAs<BlockDecl>());
1022 }
1023 
1024 void ASTStmtReader::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
1025   VisitExpr(E);
1026 
1027   unsigned NumAssocs = Record.readInt();
1028   assert(NumAssocs == E->getNumAssocs() && "Wrong NumAssocs!");
1029   E->ResultIndex = Record.readInt();
1030   E->GenericSelectionExprBits.GenericLoc = ReadSourceLocation();
1031   E->DefaultLoc = ReadSourceLocation();
1032   E->RParenLoc = ReadSourceLocation();
1033 
1034   Stmt **Stmts = E->getTrailingObjects<Stmt *>();
1035   // Add 1 to account for the controlling expression which is the first
1036   // expression in the trailing array of Stmt *. This is not needed for
1037   // the trailing array of TypeSourceInfo *.
1038   for (unsigned I = 0, N = NumAssocs + 1; I < N; ++I)
1039     Stmts[I] = Record.readSubExpr();
1040 
1041   TypeSourceInfo **TSIs = E->getTrailingObjects<TypeSourceInfo *>();
1042   for (unsigned I = 0, N = NumAssocs; I < N; ++I)
1043     TSIs[I] = GetTypeSourceInfo();
1044 }
1045 
1046 void ASTStmtReader::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
1047   VisitExpr(E);
1048   unsigned numSemanticExprs = Record.readInt();
1049   assert(numSemanticExprs + 1 == E->PseudoObjectExprBits.NumSubExprs);
1050   E->PseudoObjectExprBits.ResultIndex = Record.readInt();
1051 
1052   // Read the syntactic expression.
1053   E->getSubExprsBuffer()[0] = Record.readSubExpr();
1054 
1055   // Read all the semantic expressions.
1056   for (unsigned i = 0; i != numSemanticExprs; ++i) {
1057     Expr *subExpr = Record.readSubExpr();
1058     E->getSubExprsBuffer()[i+1] = subExpr;
1059   }
1060 }
1061 
1062 void ASTStmtReader::VisitAtomicExpr(AtomicExpr *E) {
1063   VisitExpr(E);
1064   E->Op = AtomicExpr::AtomicOp(Record.readInt());
1065   E->NumSubExprs = AtomicExpr::getNumSubExprs(E->Op);
1066   for (unsigned I = 0; I != E->NumSubExprs; ++I)
1067     E->SubExprs[I] = Record.readSubExpr();
1068   E->BuiltinLoc = ReadSourceLocation();
1069   E->RParenLoc = ReadSourceLocation();
1070 }
1071 
1072 //===----------------------------------------------------------------------===//
1073 // Objective-C Expressions and Statements
1074 
1075 void ASTStmtReader::VisitObjCStringLiteral(ObjCStringLiteral *E) {
1076   VisitExpr(E);
1077   E->setString(cast<StringLiteral>(Record.readSubStmt()));
1078   E->setAtLoc(ReadSourceLocation());
1079 }
1080 
1081 void ASTStmtReader::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1082   VisitExpr(E);
1083   // could be one of several IntegerLiteral, FloatLiteral, etc.
1084   E->SubExpr = Record.readSubStmt();
1085   E->BoxingMethod = ReadDeclAs<ObjCMethodDecl>();
1086   E->Range = ReadSourceRange();
1087 }
1088 
1089 void ASTStmtReader::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1090   VisitExpr(E);
1091   unsigned NumElements = Record.readInt();
1092   assert(NumElements == E->getNumElements() && "Wrong number of elements");
1093   Expr **Elements = E->getElements();
1094   for (unsigned I = 0, N = NumElements; I != N; ++I)
1095     Elements[I] = Record.readSubExpr();
1096   E->ArrayWithObjectsMethod = ReadDeclAs<ObjCMethodDecl>();
1097   E->Range = ReadSourceRange();
1098 }
1099 
1100 void ASTStmtReader::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1101   VisitExpr(E);
1102   unsigned NumElements = Record.readInt();
1103   assert(NumElements == E->getNumElements() && "Wrong number of elements");
1104   bool HasPackExpansions = Record.readInt();
1105   assert(HasPackExpansions == E->HasPackExpansions &&"Pack expansion mismatch");
1106   auto *KeyValues =
1107       E->getTrailingObjects<ObjCDictionaryLiteral::KeyValuePair>();
1108   auto *Expansions =
1109       E->getTrailingObjects<ObjCDictionaryLiteral::ExpansionData>();
1110   for (unsigned I = 0; I != NumElements; ++I) {
1111     KeyValues[I].Key = Record.readSubExpr();
1112     KeyValues[I].Value = Record.readSubExpr();
1113     if (HasPackExpansions) {
1114       Expansions[I].EllipsisLoc = ReadSourceLocation();
1115       Expansions[I].NumExpansionsPlusOne = Record.readInt();
1116     }
1117   }
1118   E->DictWithObjectsMethod = ReadDeclAs<ObjCMethodDecl>();
1119   E->Range = ReadSourceRange();
1120 }
1121 
1122 void ASTStmtReader::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
1123   VisitExpr(E);
1124   E->setEncodedTypeSourceInfo(GetTypeSourceInfo());
1125   E->setAtLoc(ReadSourceLocation());
1126   E->setRParenLoc(ReadSourceLocation());
1127 }
1128 
1129 void ASTStmtReader::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
1130   VisitExpr(E);
1131   E->setSelector(Record.readSelector());
1132   E->setAtLoc(ReadSourceLocation());
1133   E->setRParenLoc(ReadSourceLocation());
1134 }
1135 
1136 void ASTStmtReader::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
1137   VisitExpr(E);
1138   E->setProtocol(ReadDeclAs<ObjCProtocolDecl>());
1139   E->setAtLoc(ReadSourceLocation());
1140   E->ProtoLoc = ReadSourceLocation();
1141   E->setRParenLoc(ReadSourceLocation());
1142 }
1143 
1144 void ASTStmtReader::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
1145   VisitExpr(E);
1146   E->setDecl(ReadDeclAs<ObjCIvarDecl>());
1147   E->setLocation(ReadSourceLocation());
1148   E->setOpLoc(ReadSourceLocation());
1149   E->setBase(Record.readSubExpr());
1150   E->setIsArrow(Record.readInt());
1151   E->setIsFreeIvar(Record.readInt());
1152 }
1153 
1154 void ASTStmtReader::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
1155   VisitExpr(E);
1156   unsigned MethodRefFlags = Record.readInt();
1157   bool Implicit = Record.readInt() != 0;
1158   if (Implicit) {
1159     auto *Getter = ReadDeclAs<ObjCMethodDecl>();
1160     auto *Setter = ReadDeclAs<ObjCMethodDecl>();
1161     E->setImplicitProperty(Getter, Setter, MethodRefFlags);
1162   } else {
1163     E->setExplicitProperty(ReadDeclAs<ObjCPropertyDecl>(), MethodRefFlags);
1164   }
1165   E->setLocation(ReadSourceLocation());
1166   E->setReceiverLocation(ReadSourceLocation());
1167   switch (Record.readInt()) {
1168   case 0:
1169     E->setBase(Record.readSubExpr());
1170     break;
1171   case 1:
1172     E->setSuperReceiver(Record.readType());
1173     break;
1174   case 2:
1175     E->setClassReceiver(ReadDeclAs<ObjCInterfaceDecl>());
1176     break;
1177   }
1178 }
1179 
1180 void ASTStmtReader::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
1181   VisitExpr(E);
1182   E->setRBracket(ReadSourceLocation());
1183   E->setBaseExpr(Record.readSubExpr());
1184   E->setKeyExpr(Record.readSubExpr());
1185   E->GetAtIndexMethodDecl = ReadDeclAs<ObjCMethodDecl>();
1186   E->SetAtIndexMethodDecl = ReadDeclAs<ObjCMethodDecl>();
1187 }
1188 
1189 void ASTStmtReader::VisitObjCMessageExpr(ObjCMessageExpr *E) {
1190   VisitExpr(E);
1191   assert(Record.peekInt() == E->getNumArgs());
1192   Record.skipInts(1);
1193   unsigned NumStoredSelLocs = Record.readInt();
1194   E->SelLocsKind = Record.readInt();
1195   E->setDelegateInitCall(Record.readInt());
1196   E->IsImplicit = Record.readInt();
1197   auto Kind = static_cast<ObjCMessageExpr::ReceiverKind>(Record.readInt());
1198   switch (Kind) {
1199   case ObjCMessageExpr::Instance:
1200     E->setInstanceReceiver(Record.readSubExpr());
1201     break;
1202 
1203   case ObjCMessageExpr::Class:
1204     E->setClassReceiver(GetTypeSourceInfo());
1205     break;
1206 
1207   case ObjCMessageExpr::SuperClass:
1208   case ObjCMessageExpr::SuperInstance: {
1209     QualType T = Record.readType();
1210     SourceLocation SuperLoc = ReadSourceLocation();
1211     E->setSuper(SuperLoc, T, Kind == ObjCMessageExpr::SuperInstance);
1212     break;
1213   }
1214   }
1215 
1216   assert(Kind == E->getReceiverKind());
1217 
1218   if (Record.readInt())
1219     E->setMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1220   else
1221     E->setSelector(Record.readSelector());
1222 
1223   E->LBracLoc = ReadSourceLocation();
1224   E->RBracLoc = ReadSourceLocation();
1225 
1226   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1227     E->setArg(I, Record.readSubExpr());
1228 
1229   SourceLocation *Locs = E->getStoredSelLocs();
1230   for (unsigned I = 0; I != NumStoredSelLocs; ++I)
1231     Locs[I] = ReadSourceLocation();
1232 }
1233 
1234 void ASTStmtReader::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
1235   VisitStmt(S);
1236   S->setElement(Record.readSubStmt());
1237   S->setCollection(Record.readSubExpr());
1238   S->setBody(Record.readSubStmt());
1239   S->setForLoc(ReadSourceLocation());
1240   S->setRParenLoc(ReadSourceLocation());
1241 }
1242 
1243 void ASTStmtReader::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
1244   VisitStmt(S);
1245   S->setCatchBody(Record.readSubStmt());
1246   S->setCatchParamDecl(ReadDeclAs<VarDecl>());
1247   S->setAtCatchLoc(ReadSourceLocation());
1248   S->setRParenLoc(ReadSourceLocation());
1249 }
1250 
1251 void ASTStmtReader::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
1252   VisitStmt(S);
1253   S->setFinallyBody(Record.readSubStmt());
1254   S->setAtFinallyLoc(ReadSourceLocation());
1255 }
1256 
1257 void ASTStmtReader::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
1258   VisitStmt(S); // FIXME: no test coverage.
1259   S->setSubStmt(Record.readSubStmt());
1260   S->setAtLoc(ReadSourceLocation());
1261 }
1262 
1263 void ASTStmtReader::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
1264   VisitStmt(S);
1265   assert(Record.peekInt() == S->getNumCatchStmts());
1266   Record.skipInts(1);
1267   bool HasFinally = Record.readInt();
1268   S->setTryBody(Record.readSubStmt());
1269   for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
1270     S->setCatchStmt(I, cast_or_null<ObjCAtCatchStmt>(Record.readSubStmt()));
1271 
1272   if (HasFinally)
1273     S->setFinallyStmt(Record.readSubStmt());
1274   S->setAtTryLoc(ReadSourceLocation());
1275 }
1276 
1277 void ASTStmtReader::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
1278   VisitStmt(S); // FIXME: no test coverage.
1279   S->setSynchExpr(Record.readSubStmt());
1280   S->setSynchBody(Record.readSubStmt());
1281   S->setAtSynchronizedLoc(ReadSourceLocation());
1282 }
1283 
1284 void ASTStmtReader::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
1285   VisitStmt(S); // FIXME: no test coverage.
1286   S->setThrowExpr(Record.readSubStmt());
1287   S->setThrowLoc(ReadSourceLocation());
1288 }
1289 
1290 void ASTStmtReader::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
1291   VisitExpr(E);
1292   E->setValue(Record.readInt());
1293   E->setLocation(ReadSourceLocation());
1294 }
1295 
1296 void ASTStmtReader::VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
1297   VisitExpr(E);
1298   SourceRange R = Record.readSourceRange();
1299   E->AtLoc = R.getBegin();
1300   E->RParen = R.getEnd();
1301   E->VersionToCheck = Record.readVersionTuple();
1302 }
1303 
1304 //===----------------------------------------------------------------------===//
1305 // C++ Expressions and Statements
1306 //===----------------------------------------------------------------------===//
1307 
1308 void ASTStmtReader::VisitCXXCatchStmt(CXXCatchStmt *S) {
1309   VisitStmt(S);
1310   S->CatchLoc = ReadSourceLocation();
1311   S->ExceptionDecl = ReadDeclAs<VarDecl>();
1312   S->HandlerBlock = Record.readSubStmt();
1313 }
1314 
1315 void ASTStmtReader::VisitCXXTryStmt(CXXTryStmt *S) {
1316   VisitStmt(S);
1317   assert(Record.peekInt() == S->getNumHandlers() && "NumStmtFields is wrong ?");
1318   Record.skipInts(1);
1319   S->TryLoc = ReadSourceLocation();
1320   S->getStmts()[0] = Record.readSubStmt();
1321   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1322     S->getStmts()[i + 1] = Record.readSubStmt();
1323 }
1324 
1325 void ASTStmtReader::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1326   VisitStmt(S);
1327   S->ForLoc = ReadSourceLocation();
1328   S->CoawaitLoc = ReadSourceLocation();
1329   S->ColonLoc = ReadSourceLocation();
1330   S->RParenLoc = ReadSourceLocation();
1331   S->setInit(Record.readSubStmt());
1332   S->setRangeStmt(Record.readSubStmt());
1333   S->setBeginStmt(Record.readSubStmt());
1334   S->setEndStmt(Record.readSubStmt());
1335   S->setCond(Record.readSubExpr());
1336   S->setInc(Record.readSubExpr());
1337   S->setLoopVarStmt(Record.readSubStmt());
1338   S->setBody(Record.readSubStmt());
1339 }
1340 
1341 void ASTStmtReader::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1342   VisitStmt(S);
1343   S->KeywordLoc = ReadSourceLocation();
1344   S->IsIfExists = Record.readInt();
1345   S->QualifierLoc = Record.readNestedNameSpecifierLoc();
1346   ReadDeclarationNameInfo(S->NameInfo);
1347   S->SubStmt = Record.readSubStmt();
1348 }
1349 
1350 void ASTStmtReader::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1351   VisitCallExpr(E);
1352   E->CXXOperatorCallExprBits.OperatorKind = Record.readInt();
1353   E->CXXOperatorCallExprBits.FPFeatures = Record.readInt();
1354   E->Range = Record.readSourceRange();
1355 }
1356 
1357 void ASTStmtReader::VisitCXXConstructExpr(CXXConstructExpr *E) {
1358   VisitExpr(E);
1359 
1360   unsigned NumArgs = Record.readInt();
1361   assert((NumArgs == E->getNumArgs()) && "Wrong NumArgs!");
1362 
1363   E->CXXConstructExprBits.Elidable = Record.readInt();
1364   E->CXXConstructExprBits.HadMultipleCandidates = Record.readInt();
1365   E->CXXConstructExprBits.ListInitialization = Record.readInt();
1366   E->CXXConstructExprBits.StdInitListInitialization = Record.readInt();
1367   E->CXXConstructExprBits.ZeroInitialization = Record.readInt();
1368   E->CXXConstructExprBits.ConstructionKind = Record.readInt();
1369   E->CXXConstructExprBits.Loc = ReadSourceLocation();
1370   E->Constructor = ReadDeclAs<CXXConstructorDecl>();
1371   E->ParenOrBraceRange = ReadSourceRange();
1372 
1373   for (unsigned I = 0; I != NumArgs; ++I)
1374     E->setArg(I, Record.readSubExpr());
1375 }
1376 
1377 void ASTStmtReader::VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E) {
1378   VisitExpr(E);
1379   E->Constructor = ReadDeclAs<CXXConstructorDecl>();
1380   E->Loc = ReadSourceLocation();
1381   E->ConstructsVirtualBase = Record.readInt();
1382   E->InheritedFromVirtualBase = Record.readInt();
1383 }
1384 
1385 void ASTStmtReader::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1386   VisitCXXConstructExpr(E);
1387   E->TSI = GetTypeSourceInfo();
1388 }
1389 
1390 void ASTStmtReader::VisitLambdaExpr(LambdaExpr *E) {
1391   VisitExpr(E);
1392   unsigned NumCaptures = Record.readInt();
1393   assert(NumCaptures == E->NumCaptures);(void)NumCaptures;
1394   E->IntroducerRange = ReadSourceRange();
1395   E->CaptureDefault = static_cast<LambdaCaptureDefault>(Record.readInt());
1396   E->CaptureDefaultLoc = ReadSourceLocation();
1397   E->ExplicitParams = Record.readInt();
1398   E->ExplicitResultType = Record.readInt();
1399   E->ClosingBrace = ReadSourceLocation();
1400 
1401   // Read capture initializers.
1402   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1403                                       CEnd = E->capture_init_end();
1404        C != CEnd; ++C)
1405     *C = Record.readSubExpr();
1406 }
1407 
1408 void
1409 ASTStmtReader::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
1410   VisitExpr(E);
1411   E->SubExpr = Record.readSubExpr();
1412 }
1413 
1414 void ASTStmtReader::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1415   VisitExplicitCastExpr(E);
1416   SourceRange R = ReadSourceRange();
1417   E->Loc = R.getBegin();
1418   E->RParenLoc = R.getEnd();
1419   R = ReadSourceRange();
1420   E->AngleBrackets = R;
1421 }
1422 
1423 void ASTStmtReader::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1424   return VisitCXXNamedCastExpr(E);
1425 }
1426 
1427 void ASTStmtReader::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1428   return VisitCXXNamedCastExpr(E);
1429 }
1430 
1431 void ASTStmtReader::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1432   return VisitCXXNamedCastExpr(E);
1433 }
1434 
1435 void ASTStmtReader::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1436   return VisitCXXNamedCastExpr(E);
1437 }
1438 
1439 void ASTStmtReader::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1440   VisitExplicitCastExpr(E);
1441   E->setLParenLoc(ReadSourceLocation());
1442   E->setRParenLoc(ReadSourceLocation());
1443 }
1444 
1445 void ASTStmtReader::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1446   VisitCallExpr(E);
1447   E->UDSuffixLoc = ReadSourceLocation();
1448 }
1449 
1450 void ASTStmtReader::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1451   VisitExpr(E);
1452   E->setValue(Record.readInt());
1453   E->setLocation(ReadSourceLocation());
1454 }
1455 
1456 void ASTStmtReader::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1457   VisitExpr(E);
1458   E->setLocation(ReadSourceLocation());
1459 }
1460 
1461 void ASTStmtReader::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1462   VisitExpr(E);
1463   E->setSourceRange(ReadSourceRange());
1464   if (E->isTypeOperand()) { // typeid(int)
1465     E->setTypeOperandSourceInfo(
1466         GetTypeSourceInfo());
1467     return;
1468   }
1469 
1470   // typeid(42+2)
1471   E->setExprOperand(Record.readSubExpr());
1472 }
1473 
1474 void ASTStmtReader::VisitCXXThisExpr(CXXThisExpr *E) {
1475   VisitExpr(E);
1476   E->setLocation(ReadSourceLocation());
1477   E->setImplicit(Record.readInt());
1478 }
1479 
1480 void ASTStmtReader::VisitCXXThrowExpr(CXXThrowExpr *E) {
1481   VisitExpr(E);
1482   E->CXXThrowExprBits.ThrowLoc = ReadSourceLocation();
1483   E->Operand = Record.readSubExpr();
1484   E->CXXThrowExprBits.IsThrownVariableInScope = Record.readInt();
1485 }
1486 
1487 void ASTStmtReader::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1488   VisitExpr(E);
1489   E->Param = ReadDeclAs<ParmVarDecl>();
1490   E->CXXDefaultArgExprBits.Loc = ReadSourceLocation();
1491 }
1492 
1493 void ASTStmtReader::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
1494   VisitExpr(E);
1495   E->Field = ReadDeclAs<FieldDecl>();
1496   E->CXXDefaultInitExprBits.Loc = ReadSourceLocation();
1497 }
1498 
1499 void ASTStmtReader::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1500   VisitExpr(E);
1501   E->setTemporary(Record.readCXXTemporary());
1502   E->setSubExpr(Record.readSubExpr());
1503 }
1504 
1505 void ASTStmtReader::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1506   VisitExpr(E);
1507   E->TypeInfo = GetTypeSourceInfo();
1508   E->CXXScalarValueInitExprBits.RParenLoc = ReadSourceLocation();
1509 }
1510 
1511 void ASTStmtReader::VisitCXXNewExpr(CXXNewExpr *E) {
1512   VisitExpr(E);
1513 
1514   bool IsArray = Record.readInt();
1515   bool HasInit = Record.readInt();
1516   unsigned NumPlacementArgs = Record.readInt();
1517   bool IsParenTypeId = Record.readInt();
1518 
1519   E->CXXNewExprBits.IsGlobalNew = Record.readInt();
1520   E->CXXNewExprBits.ShouldPassAlignment = Record.readInt();
1521   E->CXXNewExprBits.UsualArrayDeleteWantsSize = Record.readInt();
1522   E->CXXNewExprBits.StoredInitializationStyle = Record.readInt();
1523 
1524   assert((IsArray == E->isArray()) && "Wrong IsArray!");
1525   assert((HasInit == E->hasInitializer()) && "Wrong HasInit!");
1526   assert((NumPlacementArgs == E->getNumPlacementArgs()) &&
1527          "Wrong NumPlacementArgs!");
1528   assert((IsParenTypeId == E->isParenTypeId()) && "Wrong IsParenTypeId!");
1529   (void)IsArray;
1530   (void)HasInit;
1531   (void)NumPlacementArgs;
1532 
1533   E->setOperatorNew(ReadDeclAs<FunctionDecl>());
1534   E->setOperatorDelete(ReadDeclAs<FunctionDecl>());
1535   E->AllocatedTypeInfo = GetTypeSourceInfo();
1536   if (IsParenTypeId)
1537     E->getTrailingObjects<SourceRange>()[0] = ReadSourceRange();
1538   E->Range = ReadSourceRange();
1539   E->DirectInitRange = ReadSourceRange();
1540 
1541   // Install all the subexpressions.
1542   for (CXXNewExpr::raw_arg_iterator I = E->raw_arg_begin(),
1543                                     N = E->raw_arg_end();
1544        I != N; ++I)
1545     *I = Record.readSubStmt();
1546 }
1547 
1548 void ASTStmtReader::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1549   VisitExpr(E);
1550   E->CXXDeleteExprBits.GlobalDelete = Record.readInt();
1551   E->CXXDeleteExprBits.ArrayForm = Record.readInt();
1552   E->CXXDeleteExprBits.ArrayFormAsWritten = Record.readInt();
1553   E->CXXDeleteExprBits.UsualArrayDeleteWantsSize = Record.readInt();
1554   E->OperatorDelete = ReadDeclAs<FunctionDecl>();
1555   E->Argument = Record.readSubExpr();
1556   E->CXXDeleteExprBits.Loc = ReadSourceLocation();
1557 }
1558 
1559 void ASTStmtReader::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1560   VisitExpr(E);
1561 
1562   E->Base = Record.readSubExpr();
1563   E->IsArrow = Record.readInt();
1564   E->OperatorLoc = ReadSourceLocation();
1565   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1566   E->ScopeType = GetTypeSourceInfo();
1567   E->ColonColonLoc = ReadSourceLocation();
1568   E->TildeLoc = ReadSourceLocation();
1569 
1570   IdentifierInfo *II = Record.getIdentifierInfo();
1571   if (II)
1572     E->setDestroyedType(II, ReadSourceLocation());
1573   else
1574     E->setDestroyedType(GetTypeSourceInfo());
1575 }
1576 
1577 void ASTStmtReader::VisitExprWithCleanups(ExprWithCleanups *E) {
1578   VisitExpr(E);
1579 
1580   unsigned NumObjects = Record.readInt();
1581   assert(NumObjects == E->getNumObjects());
1582   for (unsigned i = 0; i != NumObjects; ++i)
1583     E->getTrailingObjects<BlockDecl *>()[i] =
1584         ReadDeclAs<BlockDecl>();
1585 
1586   E->ExprWithCleanupsBits.CleanupsHaveSideEffects = Record.readInt();
1587   E->SubExpr = Record.readSubExpr();
1588 }
1589 
1590 void ASTStmtReader::VisitCXXDependentScopeMemberExpr(
1591     CXXDependentScopeMemberExpr *E) {
1592   VisitExpr(E);
1593 
1594   bool HasTemplateKWAndArgsInfo = Record.readInt();
1595   unsigned NumTemplateArgs = Record.readInt();
1596   bool HasFirstQualifierFoundInScope = Record.readInt();
1597 
1598   assert((HasTemplateKWAndArgsInfo == E->hasTemplateKWAndArgsInfo()) &&
1599          "Wrong HasTemplateKWAndArgsInfo!");
1600   assert(
1601       (HasFirstQualifierFoundInScope == E->hasFirstQualifierFoundInScope()) &&
1602       "Wrong HasFirstQualifierFoundInScope!");
1603 
1604   if (HasTemplateKWAndArgsInfo)
1605     ReadTemplateKWAndArgsInfo(
1606         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1607         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
1608 
1609   assert((NumTemplateArgs == E->getNumTemplateArgs()) &&
1610          "Wrong NumTemplateArgs!");
1611 
1612   E->CXXDependentScopeMemberExprBits.IsArrow = Record.readInt();
1613   E->CXXDependentScopeMemberExprBits.OperatorLoc = ReadSourceLocation();
1614   E->BaseType = Record.readType();
1615   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1616   E->Base = Record.readSubExpr();
1617 
1618   if (HasFirstQualifierFoundInScope)
1619     *E->getTrailingObjects<NamedDecl *>() = ReadDeclAs<NamedDecl>();
1620 
1621   ReadDeclarationNameInfo(E->MemberNameInfo);
1622 }
1623 
1624 void
1625 ASTStmtReader::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1626   VisitExpr(E);
1627 
1628   if (Record.readInt()) // HasTemplateKWAndArgsInfo
1629     ReadTemplateKWAndArgsInfo(
1630         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1631         E->getTrailingObjects<TemplateArgumentLoc>(),
1632         /*NumTemplateArgs=*/Record.readInt());
1633 
1634   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1635   ReadDeclarationNameInfo(E->NameInfo);
1636 }
1637 
1638 void
1639 ASTStmtReader::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1640   VisitExpr(E);
1641   assert(Record.peekInt() == E->arg_size() &&
1642          "Read wrong record during creation ?");
1643   Record.skipInts(1);
1644   for (unsigned I = 0, N = E->arg_size(); I != N; ++I)
1645     E->setArg(I, Record.readSubExpr());
1646   E->TSI = GetTypeSourceInfo();
1647   E->setLParenLoc(ReadSourceLocation());
1648   E->setRParenLoc(ReadSourceLocation());
1649 }
1650 
1651 void ASTStmtReader::VisitOverloadExpr(OverloadExpr *E) {
1652   VisitExpr(E);
1653 
1654   unsigned NumResults = Record.readInt();
1655   bool HasTemplateKWAndArgsInfo = Record.readInt();
1656   assert((E->getNumDecls() == NumResults) && "Wrong NumResults!");
1657   assert((E->hasTemplateKWAndArgsInfo() == HasTemplateKWAndArgsInfo) &&
1658          "Wrong HasTemplateKWAndArgsInfo!");
1659 
1660   if (HasTemplateKWAndArgsInfo) {
1661     unsigned NumTemplateArgs = Record.readInt();
1662     ReadTemplateKWAndArgsInfo(*E->getTrailingASTTemplateKWAndArgsInfo(),
1663                               E->getTrailingTemplateArgumentLoc(),
1664                               NumTemplateArgs);
1665     assert((E->getNumTemplateArgs() == NumTemplateArgs) &&
1666            "Wrong NumTemplateArgs!");
1667   }
1668 
1669   UnresolvedSet<8> Decls;
1670   for (unsigned I = 0; I != NumResults; ++I) {
1671     auto *D = ReadDeclAs<NamedDecl>();
1672     auto AS = (AccessSpecifier)Record.readInt();
1673     Decls.addDecl(D, AS);
1674   }
1675 
1676   DeclAccessPair *Results = E->getTrailingResults();
1677   UnresolvedSetIterator Iter = Decls.begin();
1678   for (unsigned I = 0; I != NumResults; ++I) {
1679     Results[I] = (Iter + I).getPair();
1680   }
1681 
1682   ReadDeclarationNameInfo(E->NameInfo);
1683   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1684 }
1685 
1686 void ASTStmtReader::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1687   VisitOverloadExpr(E);
1688   E->UnresolvedMemberExprBits.IsArrow = Record.readInt();
1689   E->UnresolvedMemberExprBits.HasUnresolvedUsing = Record.readInt();
1690   E->Base = Record.readSubExpr();
1691   E->BaseType = Record.readType();
1692   E->OperatorLoc = ReadSourceLocation();
1693 }
1694 
1695 void ASTStmtReader::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1696   VisitOverloadExpr(E);
1697   E->UnresolvedLookupExprBits.RequiresADL = Record.readInt();
1698   E->UnresolvedLookupExprBits.Overloaded = Record.readInt();
1699   E->NamingClass = ReadDeclAs<CXXRecordDecl>();
1700 }
1701 
1702 void ASTStmtReader::VisitTypeTraitExpr(TypeTraitExpr *E) {
1703   VisitExpr(E);
1704   E->TypeTraitExprBits.NumArgs = Record.readInt();
1705   E->TypeTraitExprBits.Kind = Record.readInt();
1706   E->TypeTraitExprBits.Value = Record.readInt();
1707   SourceRange Range = ReadSourceRange();
1708   E->Loc = Range.getBegin();
1709   E->RParenLoc = Range.getEnd();
1710 
1711   auto **Args = E->getTrailingObjects<TypeSourceInfo *>();
1712   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1713     Args[I] = GetTypeSourceInfo();
1714 }
1715 
1716 void ASTStmtReader::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1717   VisitExpr(E);
1718   E->ATT = (ArrayTypeTrait)Record.readInt();
1719   E->Value = (unsigned int)Record.readInt();
1720   SourceRange Range = ReadSourceRange();
1721   E->Loc = Range.getBegin();
1722   E->RParen = Range.getEnd();
1723   E->QueriedType = GetTypeSourceInfo();
1724   E->Dimension = Record.readSubExpr();
1725 }
1726 
1727 void ASTStmtReader::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1728   VisitExpr(E);
1729   E->ET = (ExpressionTrait)Record.readInt();
1730   E->Value = (bool)Record.readInt();
1731   SourceRange Range = ReadSourceRange();
1732   E->QueriedExpression = Record.readSubExpr();
1733   E->Loc = Range.getBegin();
1734   E->RParen = Range.getEnd();
1735 }
1736 
1737 void ASTStmtReader::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1738   VisitExpr(E);
1739   E->CXXNoexceptExprBits.Value = Record.readInt();
1740   E->Range = ReadSourceRange();
1741   E->Operand = Record.readSubExpr();
1742 }
1743 
1744 void ASTStmtReader::VisitPackExpansionExpr(PackExpansionExpr *E) {
1745   VisitExpr(E);
1746   E->EllipsisLoc = ReadSourceLocation();
1747   E->NumExpansions = Record.readInt();
1748   E->Pattern = Record.readSubExpr();
1749 }
1750 
1751 void ASTStmtReader::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
1752   VisitExpr(E);
1753   unsigned NumPartialArgs = Record.readInt();
1754   E->OperatorLoc = ReadSourceLocation();
1755   E->PackLoc = ReadSourceLocation();
1756   E->RParenLoc = ReadSourceLocation();
1757   E->Pack = Record.readDeclAs<NamedDecl>();
1758   if (E->isPartiallySubstituted()) {
1759     assert(E->Length == NumPartialArgs);
1760     for (auto *I = E->getTrailingObjects<TemplateArgument>(),
1761               *E = I + NumPartialArgs;
1762          I != E; ++I)
1763       new (I) TemplateArgument(Record.readTemplateArgument());
1764   } else if (!E->isValueDependent()) {
1765     E->Length = Record.readInt();
1766   }
1767 }
1768 
1769 void ASTStmtReader::VisitSubstNonTypeTemplateParmExpr(
1770                                               SubstNonTypeTemplateParmExpr *E) {
1771   VisitExpr(E);
1772   E->Param = ReadDeclAs<NonTypeTemplateParmDecl>();
1773   E->SubstNonTypeTemplateParmExprBits.NameLoc = ReadSourceLocation();
1774   E->Replacement = Record.readSubExpr();
1775 }
1776 
1777 void ASTStmtReader::VisitSubstNonTypeTemplateParmPackExpr(
1778                                           SubstNonTypeTemplateParmPackExpr *E) {
1779   VisitExpr(E);
1780   E->Param = ReadDeclAs<NonTypeTemplateParmDecl>();
1781   TemplateArgument ArgPack = Record.readTemplateArgument();
1782   if (ArgPack.getKind() != TemplateArgument::Pack)
1783     return;
1784 
1785   E->Arguments = ArgPack.pack_begin();
1786   E->NumArguments = ArgPack.pack_size();
1787   E->NameLoc = ReadSourceLocation();
1788 }
1789 
1790 void ASTStmtReader::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
1791   VisitExpr(E);
1792   E->NumParameters = Record.readInt();
1793   E->ParamPack = ReadDeclAs<ParmVarDecl>();
1794   E->NameLoc = ReadSourceLocation();
1795   auto **Parms = E->getTrailingObjects<ParmVarDecl *>();
1796   for (unsigned i = 0, n = E->NumParameters; i != n; ++i)
1797     Parms[i] = ReadDeclAs<ParmVarDecl>();
1798 }
1799 
1800 void ASTStmtReader::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
1801   VisitExpr(E);
1802   E->State = Record.readSubExpr();
1803   auto *VD = ReadDeclAs<ValueDecl>();
1804   unsigned ManglingNumber = Record.readInt();
1805   E->setExtendingDecl(VD, ManglingNumber);
1806 }
1807 
1808 void ASTStmtReader::VisitCXXFoldExpr(CXXFoldExpr *E) {
1809   VisitExpr(E);
1810   E->LParenLoc = ReadSourceLocation();
1811   E->EllipsisLoc = ReadSourceLocation();
1812   E->RParenLoc = ReadSourceLocation();
1813   E->SubExprs[0] = Record.readSubExpr();
1814   E->SubExprs[1] = Record.readSubExpr();
1815   E->Opcode = (BinaryOperatorKind)Record.readInt();
1816 }
1817 
1818 void ASTStmtReader::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
1819   VisitExpr(E);
1820   E->SourceExpr = Record.readSubExpr();
1821   E->OpaqueValueExprBits.Loc = ReadSourceLocation();
1822   E->setIsUnique(Record.readInt());
1823 }
1824 
1825 void ASTStmtReader::VisitTypoExpr(TypoExpr *E) {
1826   llvm_unreachable("Cannot read TypoExpr nodes");
1827 }
1828 
1829 //===----------------------------------------------------------------------===//
1830 // Microsoft Expressions and Statements
1831 //===----------------------------------------------------------------------===//
1832 void ASTStmtReader::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
1833   VisitExpr(E);
1834   E->IsArrow = (Record.readInt() != 0);
1835   E->BaseExpr = Record.readSubExpr();
1836   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1837   E->MemberLoc = ReadSourceLocation();
1838   E->TheDecl = ReadDeclAs<MSPropertyDecl>();
1839 }
1840 
1841 void ASTStmtReader::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
1842   VisitExpr(E);
1843   E->setBase(Record.readSubExpr());
1844   E->setIdx(Record.readSubExpr());
1845   E->setRBracketLoc(ReadSourceLocation());
1846 }
1847 
1848 void ASTStmtReader::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
1849   VisitExpr(E);
1850   E->setSourceRange(ReadSourceRange());
1851   std::string UuidStr = ReadString();
1852   E->setUuidStr(StringRef(UuidStr).copy(Record.getContext()));
1853   if (E->isTypeOperand()) { // __uuidof(ComType)
1854     E->setTypeOperandSourceInfo(
1855         GetTypeSourceInfo());
1856     return;
1857   }
1858 
1859   // __uuidof(expr)
1860   E->setExprOperand(Record.readSubExpr());
1861 }
1862 
1863 void ASTStmtReader::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
1864   VisitStmt(S);
1865   S->setLeaveLoc(ReadSourceLocation());
1866 }
1867 
1868 void ASTStmtReader::VisitSEHExceptStmt(SEHExceptStmt *S) {
1869   VisitStmt(S);
1870   S->Loc = ReadSourceLocation();
1871   S->Children[SEHExceptStmt::FILTER_EXPR] = Record.readSubStmt();
1872   S->Children[SEHExceptStmt::BLOCK] = Record.readSubStmt();
1873 }
1874 
1875 void ASTStmtReader::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
1876   VisitStmt(S);
1877   S->Loc = ReadSourceLocation();
1878   S->Block = Record.readSubStmt();
1879 }
1880 
1881 void ASTStmtReader::VisitSEHTryStmt(SEHTryStmt *S) {
1882   VisitStmt(S);
1883   S->IsCXXTry = Record.readInt();
1884   S->TryLoc = ReadSourceLocation();
1885   S->Children[SEHTryStmt::TRY] = Record.readSubStmt();
1886   S->Children[SEHTryStmt::HANDLER] = Record.readSubStmt();
1887 }
1888 
1889 //===----------------------------------------------------------------------===//
1890 // CUDA Expressions and Statements
1891 //===----------------------------------------------------------------------===//
1892 
1893 void ASTStmtReader::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
1894   VisitCallExpr(E);
1895   E->setConfig(cast<CallExpr>(Record.readSubExpr()));
1896 }
1897 
1898 //===----------------------------------------------------------------------===//
1899 // OpenCL Expressions and Statements.
1900 //===----------------------------------------------------------------------===//
1901 void ASTStmtReader::VisitAsTypeExpr(AsTypeExpr *E) {
1902   VisitExpr(E);
1903   E->BuiltinLoc = ReadSourceLocation();
1904   E->RParenLoc = ReadSourceLocation();
1905   E->SrcExpr = Record.readSubExpr();
1906 }
1907 
1908 //===----------------------------------------------------------------------===//
1909 // OpenMP Directives.
1910 //===----------------------------------------------------------------------===//
1911 
1912 void ASTStmtReader::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
1913   E->setLocStart(ReadSourceLocation());
1914   E->setLocEnd(ReadSourceLocation());
1915   OMPClauseReader ClauseReader(Record);
1916   SmallVector<OMPClause *, 5> Clauses;
1917   for (unsigned i = 0; i < E->getNumClauses(); ++i)
1918     Clauses.push_back(ClauseReader.readClause());
1919   E->setClauses(Clauses);
1920   if (E->hasAssociatedStmt())
1921     E->setAssociatedStmt(Record.readSubStmt());
1922 }
1923 
1924 void ASTStmtReader::VisitOMPLoopDirective(OMPLoopDirective *D) {
1925   VisitStmt(D);
1926   // Two fields (NumClauses and CollapsedNum) were read in ReadStmtFromStream.
1927   Record.skipInts(2);
1928   VisitOMPExecutableDirective(D);
1929   D->setIterationVariable(Record.readSubExpr());
1930   D->setLastIteration(Record.readSubExpr());
1931   D->setCalcLastIteration(Record.readSubExpr());
1932   D->setPreCond(Record.readSubExpr());
1933   D->setCond(Record.readSubExpr());
1934   D->setInit(Record.readSubExpr());
1935   D->setInc(Record.readSubExpr());
1936   D->setPreInits(Record.readSubStmt());
1937   if (isOpenMPWorksharingDirective(D->getDirectiveKind()) ||
1938       isOpenMPTaskLoopDirective(D->getDirectiveKind()) ||
1939       isOpenMPDistributeDirective(D->getDirectiveKind())) {
1940     D->setIsLastIterVariable(Record.readSubExpr());
1941     D->setLowerBoundVariable(Record.readSubExpr());
1942     D->setUpperBoundVariable(Record.readSubExpr());
1943     D->setStrideVariable(Record.readSubExpr());
1944     D->setEnsureUpperBound(Record.readSubExpr());
1945     D->setNextLowerBound(Record.readSubExpr());
1946     D->setNextUpperBound(Record.readSubExpr());
1947     D->setNumIterations(Record.readSubExpr());
1948   }
1949   if (isOpenMPLoopBoundSharingDirective(D->getDirectiveKind())) {
1950     D->setPrevLowerBoundVariable(Record.readSubExpr());
1951     D->setPrevUpperBoundVariable(Record.readSubExpr());
1952     D->setDistInc(Record.readSubExpr());
1953     D->setPrevEnsureUpperBound(Record.readSubExpr());
1954     D->setCombinedLowerBoundVariable(Record.readSubExpr());
1955     D->setCombinedUpperBoundVariable(Record.readSubExpr());
1956     D->setCombinedEnsureUpperBound(Record.readSubExpr());
1957     D->setCombinedInit(Record.readSubExpr());
1958     D->setCombinedCond(Record.readSubExpr());
1959     D->setCombinedNextLowerBound(Record.readSubExpr());
1960     D->setCombinedNextUpperBound(Record.readSubExpr());
1961     D->setCombinedDistCond(Record.readSubExpr());
1962     D->setCombinedParForInDistCond(Record.readSubExpr());
1963   }
1964   SmallVector<Expr *, 4> Sub;
1965   unsigned CollapsedNum = D->getCollapsedNumber();
1966   Sub.reserve(CollapsedNum);
1967   for (unsigned i = 0; i < CollapsedNum; ++i)
1968     Sub.push_back(Record.readSubExpr());
1969   D->setCounters(Sub);
1970   Sub.clear();
1971   for (unsigned i = 0; i < CollapsedNum; ++i)
1972     Sub.push_back(Record.readSubExpr());
1973   D->setPrivateCounters(Sub);
1974   Sub.clear();
1975   for (unsigned i = 0; i < CollapsedNum; ++i)
1976     Sub.push_back(Record.readSubExpr());
1977   D->setInits(Sub);
1978   Sub.clear();
1979   for (unsigned i = 0; i < CollapsedNum; ++i)
1980     Sub.push_back(Record.readSubExpr());
1981   D->setUpdates(Sub);
1982   Sub.clear();
1983   for (unsigned i = 0; i < CollapsedNum; ++i)
1984     Sub.push_back(Record.readSubExpr());
1985   D->setFinals(Sub);
1986 }
1987 
1988 void ASTStmtReader::VisitOMPParallelDirective(OMPParallelDirective *D) {
1989   VisitStmt(D);
1990   // The NumClauses field was read in ReadStmtFromStream.
1991   Record.skipInts(1);
1992   VisitOMPExecutableDirective(D);
1993   D->setHasCancel(Record.readInt());
1994 }
1995 
1996 void ASTStmtReader::VisitOMPSimdDirective(OMPSimdDirective *D) {
1997   VisitOMPLoopDirective(D);
1998 }
1999 
2000 void ASTStmtReader::VisitOMPForDirective(OMPForDirective *D) {
2001   VisitOMPLoopDirective(D);
2002   D->setHasCancel(Record.readInt());
2003 }
2004 
2005 void ASTStmtReader::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
2006   VisitOMPLoopDirective(D);
2007 }
2008 
2009 void ASTStmtReader::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
2010   VisitStmt(D);
2011   // The NumClauses field was read in ReadStmtFromStream.
2012   Record.skipInts(1);
2013   VisitOMPExecutableDirective(D);
2014   D->setHasCancel(Record.readInt());
2015 }
2016 
2017 void ASTStmtReader::VisitOMPSectionDirective(OMPSectionDirective *D) {
2018   VisitStmt(D);
2019   VisitOMPExecutableDirective(D);
2020   D->setHasCancel(Record.readInt());
2021 }
2022 
2023 void ASTStmtReader::VisitOMPSingleDirective(OMPSingleDirective *D) {
2024   VisitStmt(D);
2025   // The NumClauses field was read in ReadStmtFromStream.
2026   Record.skipInts(1);
2027   VisitOMPExecutableDirective(D);
2028 }
2029 
2030 void ASTStmtReader::VisitOMPMasterDirective(OMPMasterDirective *D) {
2031   VisitStmt(D);
2032   VisitOMPExecutableDirective(D);
2033 }
2034 
2035 void ASTStmtReader::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
2036   VisitStmt(D);
2037   // The NumClauses field was read in ReadStmtFromStream.
2038   Record.skipInts(1);
2039   VisitOMPExecutableDirective(D);
2040   ReadDeclarationNameInfo(D->DirName);
2041 }
2042 
2043 void ASTStmtReader::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
2044   VisitOMPLoopDirective(D);
2045   D->setHasCancel(Record.readInt());
2046 }
2047 
2048 void ASTStmtReader::VisitOMPParallelForSimdDirective(
2049     OMPParallelForSimdDirective *D) {
2050   VisitOMPLoopDirective(D);
2051 }
2052 
2053 void ASTStmtReader::VisitOMPParallelSectionsDirective(
2054     OMPParallelSectionsDirective *D) {
2055   VisitStmt(D);
2056   // The NumClauses field was read in ReadStmtFromStream.
2057   Record.skipInts(1);
2058   VisitOMPExecutableDirective(D);
2059   D->setHasCancel(Record.readInt());
2060 }
2061 
2062 void ASTStmtReader::VisitOMPTaskDirective(OMPTaskDirective *D) {
2063   VisitStmt(D);
2064   // The NumClauses field was read in ReadStmtFromStream.
2065   Record.skipInts(1);
2066   VisitOMPExecutableDirective(D);
2067   D->setHasCancel(Record.readInt());
2068 }
2069 
2070 void ASTStmtReader::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
2071   VisitStmt(D);
2072   VisitOMPExecutableDirective(D);
2073 }
2074 
2075 void ASTStmtReader::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
2076   VisitStmt(D);
2077   VisitOMPExecutableDirective(D);
2078 }
2079 
2080 void ASTStmtReader::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
2081   VisitStmt(D);
2082   VisitOMPExecutableDirective(D);
2083 }
2084 
2085 void ASTStmtReader::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
2086   VisitStmt(D);
2087   // The NumClauses field was read in ReadStmtFromStream.
2088   Record.skipInts(1);
2089   VisitOMPExecutableDirective(D);
2090   D->setReductionRef(Record.readSubExpr());
2091 }
2092 
2093 void ASTStmtReader::VisitOMPFlushDirective(OMPFlushDirective *D) {
2094   VisitStmt(D);
2095   // The NumClauses field was read in ReadStmtFromStream.
2096   Record.skipInts(1);
2097   VisitOMPExecutableDirective(D);
2098 }
2099 
2100 void ASTStmtReader::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
2101   VisitStmt(D);
2102   // The NumClauses field was read in ReadStmtFromStream.
2103   Record.skipInts(1);
2104   VisitOMPExecutableDirective(D);
2105 }
2106 
2107 void ASTStmtReader::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
2108   VisitStmt(D);
2109   // The NumClauses field was read in ReadStmtFromStream.
2110   Record.skipInts(1);
2111   VisitOMPExecutableDirective(D);
2112   D->setX(Record.readSubExpr());
2113   D->setV(Record.readSubExpr());
2114   D->setExpr(Record.readSubExpr());
2115   D->setUpdateExpr(Record.readSubExpr());
2116   D->IsXLHSInRHSPart = Record.readInt() != 0;
2117   D->IsPostfixUpdate = Record.readInt() != 0;
2118 }
2119 
2120 void ASTStmtReader::VisitOMPTargetDirective(OMPTargetDirective *D) {
2121   VisitStmt(D);
2122   // The NumClauses field was read in ReadStmtFromStream.
2123   Record.skipInts(1);
2124   VisitOMPExecutableDirective(D);
2125 }
2126 
2127 void ASTStmtReader::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
2128   VisitStmt(D);
2129   Record.skipInts(1);
2130   VisitOMPExecutableDirective(D);
2131 }
2132 
2133 void ASTStmtReader::VisitOMPTargetEnterDataDirective(
2134     OMPTargetEnterDataDirective *D) {
2135   VisitStmt(D);
2136   Record.skipInts(1);
2137   VisitOMPExecutableDirective(D);
2138 }
2139 
2140 void ASTStmtReader::VisitOMPTargetExitDataDirective(
2141     OMPTargetExitDataDirective *D) {
2142   VisitStmt(D);
2143   Record.skipInts(1);
2144   VisitOMPExecutableDirective(D);
2145 }
2146 
2147 void ASTStmtReader::VisitOMPTargetParallelDirective(
2148     OMPTargetParallelDirective *D) {
2149   VisitStmt(D);
2150   Record.skipInts(1);
2151   VisitOMPExecutableDirective(D);
2152 }
2153 
2154 void ASTStmtReader::VisitOMPTargetParallelForDirective(
2155     OMPTargetParallelForDirective *D) {
2156   VisitOMPLoopDirective(D);
2157   D->setHasCancel(Record.readInt());
2158 }
2159 
2160 void ASTStmtReader::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
2161   VisitStmt(D);
2162   // The NumClauses field was read in ReadStmtFromStream.
2163   Record.skipInts(1);
2164   VisitOMPExecutableDirective(D);
2165 }
2166 
2167 void ASTStmtReader::VisitOMPCancellationPointDirective(
2168     OMPCancellationPointDirective *D) {
2169   VisitStmt(D);
2170   VisitOMPExecutableDirective(D);
2171   D->setCancelRegion(static_cast<OpenMPDirectiveKind>(Record.readInt()));
2172 }
2173 
2174 void ASTStmtReader::VisitOMPCancelDirective(OMPCancelDirective *D) {
2175   VisitStmt(D);
2176   // The NumClauses field was read in ReadStmtFromStream.
2177   Record.skipInts(1);
2178   VisitOMPExecutableDirective(D);
2179   D->setCancelRegion(static_cast<OpenMPDirectiveKind>(Record.readInt()));
2180 }
2181 
2182 void ASTStmtReader::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
2183   VisitOMPLoopDirective(D);
2184 }
2185 
2186 void ASTStmtReader::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
2187   VisitOMPLoopDirective(D);
2188 }
2189 
2190 void ASTStmtReader::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
2191   VisitOMPLoopDirective(D);
2192 }
2193 
2194 void ASTStmtReader::VisitOMPTargetUpdateDirective(OMPTargetUpdateDirective *D) {
2195   VisitStmt(D);
2196   Record.skipInts(1);
2197   VisitOMPExecutableDirective(D);
2198 }
2199 
2200 void ASTStmtReader::VisitOMPDistributeParallelForDirective(
2201     OMPDistributeParallelForDirective *D) {
2202   VisitOMPLoopDirective(D);
2203   D->setHasCancel(Record.readInt());
2204 }
2205 
2206 void ASTStmtReader::VisitOMPDistributeParallelForSimdDirective(
2207     OMPDistributeParallelForSimdDirective *D) {
2208   VisitOMPLoopDirective(D);
2209 }
2210 
2211 void ASTStmtReader::VisitOMPDistributeSimdDirective(
2212     OMPDistributeSimdDirective *D) {
2213   VisitOMPLoopDirective(D);
2214 }
2215 
2216 void ASTStmtReader::VisitOMPTargetParallelForSimdDirective(
2217     OMPTargetParallelForSimdDirective *D) {
2218   VisitOMPLoopDirective(D);
2219 }
2220 
2221 void ASTStmtReader::VisitOMPTargetSimdDirective(OMPTargetSimdDirective *D) {
2222   VisitOMPLoopDirective(D);
2223 }
2224 
2225 void ASTStmtReader::VisitOMPTeamsDistributeDirective(
2226     OMPTeamsDistributeDirective *D) {
2227   VisitOMPLoopDirective(D);
2228 }
2229 
2230 void ASTStmtReader::VisitOMPTeamsDistributeSimdDirective(
2231     OMPTeamsDistributeSimdDirective *D) {
2232   VisitOMPLoopDirective(D);
2233 }
2234 
2235 void ASTStmtReader::VisitOMPTeamsDistributeParallelForSimdDirective(
2236     OMPTeamsDistributeParallelForSimdDirective *D) {
2237   VisitOMPLoopDirective(D);
2238 }
2239 
2240 void ASTStmtReader::VisitOMPTeamsDistributeParallelForDirective(
2241     OMPTeamsDistributeParallelForDirective *D) {
2242   VisitOMPLoopDirective(D);
2243   D->setHasCancel(Record.readInt());
2244 }
2245 
2246 void ASTStmtReader::VisitOMPTargetTeamsDirective(OMPTargetTeamsDirective *D) {
2247   VisitStmt(D);
2248   // The NumClauses field was read in ReadStmtFromStream.
2249   Record.skipInts(1);
2250   VisitOMPExecutableDirective(D);
2251 }
2252 
2253 void ASTStmtReader::VisitOMPTargetTeamsDistributeDirective(
2254     OMPTargetTeamsDistributeDirective *D) {
2255   VisitOMPLoopDirective(D);
2256 }
2257 
2258 void ASTStmtReader::VisitOMPTargetTeamsDistributeParallelForDirective(
2259     OMPTargetTeamsDistributeParallelForDirective *D) {
2260   VisitOMPLoopDirective(D);
2261   D->setHasCancel(Record.readInt());
2262 }
2263 
2264 void ASTStmtReader::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
2265     OMPTargetTeamsDistributeParallelForSimdDirective *D) {
2266   VisitOMPLoopDirective(D);
2267 }
2268 
2269 void ASTStmtReader::VisitOMPTargetTeamsDistributeSimdDirective(
2270     OMPTargetTeamsDistributeSimdDirective *D) {
2271   VisitOMPLoopDirective(D);
2272 }
2273 
2274 //===----------------------------------------------------------------------===//
2275 // ASTReader Implementation
2276 //===----------------------------------------------------------------------===//
2277 
2278 Stmt *ASTReader::ReadStmt(ModuleFile &F) {
2279   switch (ReadingKind) {
2280   case Read_None:
2281     llvm_unreachable("should not call this when not reading anything");
2282   case Read_Decl:
2283   case Read_Type:
2284     return ReadStmtFromStream(F);
2285   case Read_Stmt:
2286     return ReadSubStmt();
2287   }
2288 
2289   llvm_unreachable("ReadingKind not set ?");
2290 }
2291 
2292 Expr *ASTReader::ReadExpr(ModuleFile &F) {
2293   return cast_or_null<Expr>(ReadStmt(F));
2294 }
2295 
2296 Expr *ASTReader::ReadSubExpr() {
2297   return cast_or_null<Expr>(ReadSubStmt());
2298 }
2299 
2300 // Within the bitstream, expressions are stored in Reverse Polish
2301 // Notation, with each of the subexpressions preceding the
2302 // expression they are stored in. Subexpressions are stored from last to first.
2303 // To evaluate expressions, we continue reading expressions and placing them on
2304 // the stack, with expressions having operands removing those operands from the
2305 // stack. Evaluation terminates when we see a STMT_STOP record, and
2306 // the single remaining expression on the stack is our result.
2307 Stmt *ASTReader::ReadStmtFromStream(ModuleFile &F) {
2308   ReadingKindTracker ReadingKind(Read_Stmt, *this);
2309   llvm::BitstreamCursor &Cursor = F.DeclsCursor;
2310 
2311   // Map of offset to previously deserialized stmt. The offset points
2312   // just after the stmt record.
2313   llvm::DenseMap<uint64_t, Stmt *> StmtEntries;
2314 
2315 #ifndef NDEBUG
2316   unsigned PrevNumStmts = StmtStack.size();
2317 #endif
2318 
2319   ASTRecordReader Record(*this, F);
2320   ASTStmtReader Reader(Record, Cursor);
2321   Stmt::EmptyShell Empty;
2322 
2323   while (true) {
2324     llvm::BitstreamEntry Entry = Cursor.advanceSkippingSubblocks();
2325 
2326     switch (Entry.Kind) {
2327     case llvm::BitstreamEntry::SubBlock: // Handled for us already.
2328     case llvm::BitstreamEntry::Error:
2329       Error("malformed block record in AST file");
2330       return nullptr;
2331     case llvm::BitstreamEntry::EndBlock:
2332       goto Done;
2333     case llvm::BitstreamEntry::Record:
2334       // The interesting case.
2335       break;
2336     }
2337 
2338     ASTContext &Context = getContext();
2339     Stmt *S = nullptr;
2340     bool Finished = false;
2341     bool IsStmtReference = false;
2342     switch ((StmtCode)Record.readRecord(Cursor, Entry.ID)) {
2343     case STMT_STOP:
2344       Finished = true;
2345       break;
2346 
2347     case STMT_REF_PTR:
2348       IsStmtReference = true;
2349       assert(StmtEntries.find(Record[0]) != StmtEntries.end() &&
2350              "No stmt was recorded for this offset reference!");
2351       S = StmtEntries[Record.readInt()];
2352       break;
2353 
2354     case STMT_NULL_PTR:
2355       S = nullptr;
2356       break;
2357 
2358     case STMT_NULL:
2359       S = new (Context) NullStmt(Empty);
2360       break;
2361 
2362     case STMT_COMPOUND:
2363       S = CompoundStmt::CreateEmpty(
2364           Context, /*NumStmts=*/Record[ASTStmtReader::NumStmtFields]);
2365       break;
2366 
2367     case STMT_CASE:
2368       S = CaseStmt::CreateEmpty(
2369           Context,
2370           /*CaseStmtIsGNURange*/ Record[ASTStmtReader::NumStmtFields + 3]);
2371       break;
2372 
2373     case STMT_DEFAULT:
2374       S = new (Context) DefaultStmt(Empty);
2375       break;
2376 
2377     case STMT_LABEL:
2378       S = new (Context) LabelStmt(Empty);
2379       break;
2380 
2381     case STMT_ATTRIBUTED:
2382       S = AttributedStmt::CreateEmpty(
2383         Context,
2384         /*NumAttrs*/Record[ASTStmtReader::NumStmtFields]);
2385       break;
2386 
2387     case STMT_IF:
2388       S = IfStmt::CreateEmpty(
2389           Context,
2390           /* HasElse=*/Record[ASTStmtReader::NumStmtFields + 1],
2391           /* HasVar=*/Record[ASTStmtReader::NumStmtFields + 2],
2392           /* HasInit=*/Record[ASTStmtReader::NumStmtFields + 3]);
2393       break;
2394 
2395     case STMT_SWITCH:
2396       S = SwitchStmt::CreateEmpty(
2397           Context,
2398           /* HasInit=*/Record[ASTStmtReader::NumStmtFields],
2399           /* HasVar=*/Record[ASTStmtReader::NumStmtFields + 1]);
2400       break;
2401 
2402     case STMT_WHILE:
2403       S = WhileStmt::CreateEmpty(
2404           Context,
2405           /* HasVar=*/Record[ASTStmtReader::NumStmtFields]);
2406       break;
2407 
2408     case STMT_DO:
2409       S = new (Context) DoStmt(Empty);
2410       break;
2411 
2412     case STMT_FOR:
2413       S = new (Context) ForStmt(Empty);
2414       break;
2415 
2416     case STMT_GOTO:
2417       S = new (Context) GotoStmt(Empty);
2418       break;
2419 
2420     case STMT_INDIRECT_GOTO:
2421       S = new (Context) IndirectGotoStmt(Empty);
2422       break;
2423 
2424     case STMT_CONTINUE:
2425       S = new (Context) ContinueStmt(Empty);
2426       break;
2427 
2428     case STMT_BREAK:
2429       S = new (Context) BreakStmt(Empty);
2430       break;
2431 
2432     case STMT_RETURN:
2433       S = ReturnStmt::CreateEmpty(
2434           Context, /* HasNRVOCandidate=*/Record[ASTStmtReader::NumStmtFields]);
2435       break;
2436 
2437     case STMT_DECL:
2438       S = new (Context) DeclStmt(Empty);
2439       break;
2440 
2441     case STMT_GCCASM:
2442       S = new (Context) GCCAsmStmt(Empty);
2443       break;
2444 
2445     case STMT_MSASM:
2446       S = new (Context) MSAsmStmt(Empty);
2447       break;
2448 
2449     case STMT_CAPTURED:
2450       S = CapturedStmt::CreateDeserialized(
2451           Context, Record[ASTStmtReader::NumStmtFields]);
2452       break;
2453 
2454     case EXPR_CONSTANT:
2455       S = new (Context) ConstantExpr(Empty);
2456       break;
2457 
2458     case EXPR_PREDEFINED:
2459       S = PredefinedExpr::CreateEmpty(
2460           Context,
2461           /*HasFunctionName*/ Record[ASTStmtReader::NumExprFields]);
2462       break;
2463 
2464     case EXPR_DECL_REF:
2465       S = DeclRefExpr::CreateEmpty(
2466         Context,
2467         /*HasQualifier=*/Record[ASTStmtReader::NumExprFields],
2468         /*HasFoundDecl=*/Record[ASTStmtReader::NumExprFields + 1],
2469         /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 2],
2470         /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 2] ?
2471           Record[ASTStmtReader::NumExprFields + 5] : 0);
2472       break;
2473 
2474     case EXPR_INTEGER_LITERAL:
2475       S = IntegerLiteral::Create(Context, Empty);
2476       break;
2477 
2478     case EXPR_FLOATING_LITERAL:
2479       S = FloatingLiteral::Create(Context, Empty);
2480       break;
2481 
2482     case EXPR_IMAGINARY_LITERAL:
2483       S = new (Context) ImaginaryLiteral(Empty);
2484       break;
2485 
2486     case EXPR_STRING_LITERAL:
2487       S = StringLiteral::CreateEmpty(
2488           Context,
2489           /* NumConcatenated=*/Record[ASTStmtReader::NumExprFields],
2490           /* Length=*/Record[ASTStmtReader::NumExprFields + 1],
2491           /* CharByteWidth=*/Record[ASTStmtReader::NumExprFields + 2]);
2492       break;
2493 
2494     case EXPR_CHARACTER_LITERAL:
2495       S = new (Context) CharacterLiteral(Empty);
2496       break;
2497 
2498     case EXPR_PAREN:
2499       S = new (Context) ParenExpr(Empty);
2500       break;
2501 
2502     case EXPR_PAREN_LIST:
2503       S = ParenListExpr::CreateEmpty(
2504           Context,
2505           /* NumExprs=*/Record[ASTStmtReader::NumExprFields]);
2506       break;
2507 
2508     case EXPR_UNARY_OPERATOR:
2509       S = new (Context) UnaryOperator(Empty);
2510       break;
2511 
2512     case EXPR_OFFSETOF:
2513       S = OffsetOfExpr::CreateEmpty(Context,
2514                                     Record[ASTStmtReader::NumExprFields],
2515                                     Record[ASTStmtReader::NumExprFields + 1]);
2516       break;
2517 
2518     case EXPR_SIZEOF_ALIGN_OF:
2519       S = new (Context) UnaryExprOrTypeTraitExpr(Empty);
2520       break;
2521 
2522     case EXPR_ARRAY_SUBSCRIPT:
2523       S = new (Context) ArraySubscriptExpr(Empty);
2524       break;
2525 
2526     case EXPR_OMP_ARRAY_SECTION:
2527       S = new (Context) OMPArraySectionExpr(Empty);
2528       break;
2529 
2530     case EXPR_CALL:
2531       S = CallExpr::CreateEmpty(
2532           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
2533       break;
2534 
2535     case EXPR_MEMBER: {
2536       // We load everything here and fully initialize it at creation.
2537       // That way we can use MemberExpr::Create and don't have to duplicate its
2538       // logic with a MemberExpr::CreateEmpty.
2539 
2540       assert(Record.getIdx() == 0);
2541       NestedNameSpecifierLoc QualifierLoc;
2542       if (Record.readInt()) { // HasQualifier.
2543         QualifierLoc = Record.readNestedNameSpecifierLoc();
2544       }
2545 
2546       SourceLocation TemplateKWLoc;
2547       TemplateArgumentListInfo ArgInfo;
2548       bool HasTemplateKWAndArgsInfo = Record.readInt();
2549       if (HasTemplateKWAndArgsInfo) {
2550         TemplateKWLoc = Record.readSourceLocation();
2551         unsigned NumTemplateArgs = Record.readInt();
2552         ArgInfo.setLAngleLoc(Record.readSourceLocation());
2553         ArgInfo.setRAngleLoc(Record.readSourceLocation());
2554         for (unsigned i = 0; i != NumTemplateArgs; ++i)
2555           ArgInfo.addArgument(Record.readTemplateArgumentLoc());
2556       }
2557 
2558       bool HadMultipleCandidates = Record.readInt();
2559 
2560       auto *FoundD = Record.readDeclAs<NamedDecl>();
2561       auto AS = (AccessSpecifier)Record.readInt();
2562       DeclAccessPair FoundDecl = DeclAccessPair::make(FoundD, AS);
2563 
2564       QualType T = Record.readType();
2565       auto VK = static_cast<ExprValueKind>(Record.readInt());
2566       auto OK = static_cast<ExprObjectKind>(Record.readInt());
2567       Expr *Base = ReadSubExpr();
2568       auto *MemberD = Record.readDeclAs<ValueDecl>();
2569       SourceLocation MemberLoc = Record.readSourceLocation();
2570       DeclarationNameInfo MemberNameInfo(MemberD->getDeclName(), MemberLoc);
2571       bool IsArrow = Record.readInt();
2572       SourceLocation OperatorLoc = Record.readSourceLocation();
2573 
2574       S = MemberExpr::Create(Context, Base, IsArrow, OperatorLoc, QualifierLoc,
2575                              TemplateKWLoc, MemberD, FoundDecl, MemberNameInfo,
2576                              HasTemplateKWAndArgsInfo ? &ArgInfo : nullptr, T,
2577                              VK, OK);
2578       Record.readDeclarationNameLoc(cast<MemberExpr>(S)->MemberDNLoc,
2579                                     MemberD->getDeclName());
2580       if (HadMultipleCandidates)
2581         cast<MemberExpr>(S)->setHadMultipleCandidates(true);
2582       break;
2583     }
2584 
2585     case EXPR_BINARY_OPERATOR:
2586       S = new (Context) BinaryOperator(Empty);
2587       break;
2588 
2589     case EXPR_COMPOUND_ASSIGN_OPERATOR:
2590       S = new (Context) CompoundAssignOperator(Empty);
2591       break;
2592 
2593     case EXPR_CONDITIONAL_OPERATOR:
2594       S = new (Context) ConditionalOperator(Empty);
2595       break;
2596 
2597     case EXPR_BINARY_CONDITIONAL_OPERATOR:
2598       S = new (Context) BinaryConditionalOperator(Empty);
2599       break;
2600 
2601     case EXPR_IMPLICIT_CAST:
2602       S = ImplicitCastExpr::CreateEmpty(Context,
2603                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
2604       break;
2605 
2606     case EXPR_CSTYLE_CAST:
2607       S = CStyleCastExpr::CreateEmpty(Context,
2608                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
2609       break;
2610 
2611     case EXPR_COMPOUND_LITERAL:
2612       S = new (Context) CompoundLiteralExpr(Empty);
2613       break;
2614 
2615     case EXPR_EXT_VECTOR_ELEMENT:
2616       S = new (Context) ExtVectorElementExpr(Empty);
2617       break;
2618 
2619     case EXPR_INIT_LIST:
2620       S = new (Context) InitListExpr(Empty);
2621       break;
2622 
2623     case EXPR_DESIGNATED_INIT:
2624       S = DesignatedInitExpr::CreateEmpty(Context,
2625                                      Record[ASTStmtReader::NumExprFields] - 1);
2626 
2627       break;
2628 
2629     case EXPR_DESIGNATED_INIT_UPDATE:
2630       S = new (Context) DesignatedInitUpdateExpr(Empty);
2631       break;
2632 
2633     case EXPR_IMPLICIT_VALUE_INIT:
2634       S = new (Context) ImplicitValueInitExpr(Empty);
2635       break;
2636 
2637     case EXPR_NO_INIT:
2638       S = new (Context) NoInitExpr(Empty);
2639       break;
2640 
2641     case EXPR_ARRAY_INIT_LOOP:
2642       S = new (Context) ArrayInitLoopExpr(Empty);
2643       break;
2644 
2645     case EXPR_ARRAY_INIT_INDEX:
2646       S = new (Context) ArrayInitIndexExpr(Empty);
2647       break;
2648 
2649     case EXPR_VA_ARG:
2650       S = new (Context) VAArgExpr(Empty);
2651       break;
2652 
2653     case EXPR_ADDR_LABEL:
2654       S = new (Context) AddrLabelExpr(Empty);
2655       break;
2656 
2657     case EXPR_STMT:
2658       S = new (Context) StmtExpr(Empty);
2659       break;
2660 
2661     case EXPR_CHOOSE:
2662       S = new (Context) ChooseExpr(Empty);
2663       break;
2664 
2665     case EXPR_GNU_NULL:
2666       S = new (Context) GNUNullExpr(Empty);
2667       break;
2668 
2669     case EXPR_SHUFFLE_VECTOR:
2670       S = new (Context) ShuffleVectorExpr(Empty);
2671       break;
2672 
2673     case EXPR_CONVERT_VECTOR:
2674       S = new (Context) ConvertVectorExpr(Empty);
2675       break;
2676 
2677     case EXPR_BLOCK:
2678       S = new (Context) BlockExpr(Empty);
2679       break;
2680 
2681     case EXPR_GENERIC_SELECTION:
2682       S = GenericSelectionExpr::CreateEmpty(
2683           Context,
2684           /*NumAssocs=*/Record[ASTStmtReader::NumExprFields]);
2685       break;
2686 
2687     case EXPR_OBJC_STRING_LITERAL:
2688       S = new (Context) ObjCStringLiteral(Empty);
2689       break;
2690 
2691     case EXPR_OBJC_BOXED_EXPRESSION:
2692       S = new (Context) ObjCBoxedExpr(Empty);
2693       break;
2694 
2695     case EXPR_OBJC_ARRAY_LITERAL:
2696       S = ObjCArrayLiteral::CreateEmpty(Context,
2697                                         Record[ASTStmtReader::NumExprFields]);
2698       break;
2699 
2700     case EXPR_OBJC_DICTIONARY_LITERAL:
2701       S = ObjCDictionaryLiteral::CreateEmpty(Context,
2702             Record[ASTStmtReader::NumExprFields],
2703             Record[ASTStmtReader::NumExprFields + 1]);
2704       break;
2705 
2706     case EXPR_OBJC_ENCODE:
2707       S = new (Context) ObjCEncodeExpr(Empty);
2708       break;
2709 
2710     case EXPR_OBJC_SELECTOR_EXPR:
2711       S = new (Context) ObjCSelectorExpr(Empty);
2712       break;
2713 
2714     case EXPR_OBJC_PROTOCOL_EXPR:
2715       S = new (Context) ObjCProtocolExpr(Empty);
2716       break;
2717 
2718     case EXPR_OBJC_IVAR_REF_EXPR:
2719       S = new (Context) ObjCIvarRefExpr(Empty);
2720       break;
2721 
2722     case EXPR_OBJC_PROPERTY_REF_EXPR:
2723       S = new (Context) ObjCPropertyRefExpr(Empty);
2724       break;
2725 
2726     case EXPR_OBJC_SUBSCRIPT_REF_EXPR:
2727       S = new (Context) ObjCSubscriptRefExpr(Empty);
2728       break;
2729 
2730     case EXPR_OBJC_KVC_REF_EXPR:
2731       llvm_unreachable("mismatching AST file");
2732 
2733     case EXPR_OBJC_MESSAGE_EXPR:
2734       S = ObjCMessageExpr::CreateEmpty(Context,
2735                                      Record[ASTStmtReader::NumExprFields],
2736                                      Record[ASTStmtReader::NumExprFields + 1]);
2737       break;
2738 
2739     case EXPR_OBJC_ISA:
2740       S = new (Context) ObjCIsaExpr(Empty);
2741       break;
2742 
2743     case EXPR_OBJC_INDIRECT_COPY_RESTORE:
2744       S = new (Context) ObjCIndirectCopyRestoreExpr(Empty);
2745       break;
2746 
2747     case EXPR_OBJC_BRIDGED_CAST:
2748       S = new (Context) ObjCBridgedCastExpr(Empty);
2749       break;
2750 
2751     case STMT_OBJC_FOR_COLLECTION:
2752       S = new (Context) ObjCForCollectionStmt(Empty);
2753       break;
2754 
2755     case STMT_OBJC_CATCH:
2756       S = new (Context) ObjCAtCatchStmt(Empty);
2757       break;
2758 
2759     case STMT_OBJC_FINALLY:
2760       S = new (Context) ObjCAtFinallyStmt(Empty);
2761       break;
2762 
2763     case STMT_OBJC_AT_TRY:
2764       S = ObjCAtTryStmt::CreateEmpty(Context,
2765                                      Record[ASTStmtReader::NumStmtFields],
2766                                      Record[ASTStmtReader::NumStmtFields + 1]);
2767       break;
2768 
2769     case STMT_OBJC_AT_SYNCHRONIZED:
2770       S = new (Context) ObjCAtSynchronizedStmt(Empty);
2771       break;
2772 
2773     case STMT_OBJC_AT_THROW:
2774       S = new (Context) ObjCAtThrowStmt(Empty);
2775       break;
2776 
2777     case STMT_OBJC_AUTORELEASE_POOL:
2778       S = new (Context) ObjCAutoreleasePoolStmt(Empty);
2779       break;
2780 
2781     case EXPR_OBJC_BOOL_LITERAL:
2782       S = new (Context) ObjCBoolLiteralExpr(Empty);
2783       break;
2784 
2785     case EXPR_OBJC_AVAILABILITY_CHECK:
2786       S = new (Context) ObjCAvailabilityCheckExpr(Empty);
2787       break;
2788 
2789     case STMT_SEH_LEAVE:
2790       S = new (Context) SEHLeaveStmt(Empty);
2791       break;
2792 
2793     case STMT_SEH_EXCEPT:
2794       S = new (Context) SEHExceptStmt(Empty);
2795       break;
2796 
2797     case STMT_SEH_FINALLY:
2798       S = new (Context) SEHFinallyStmt(Empty);
2799       break;
2800 
2801     case STMT_SEH_TRY:
2802       S = new (Context) SEHTryStmt(Empty);
2803       break;
2804 
2805     case STMT_CXX_CATCH:
2806       S = new (Context) CXXCatchStmt(Empty);
2807       break;
2808 
2809     case STMT_CXX_TRY:
2810       S = CXXTryStmt::Create(Context, Empty,
2811              /*NumHandlers=*/Record[ASTStmtReader::NumStmtFields]);
2812       break;
2813 
2814     case STMT_CXX_FOR_RANGE:
2815       S = new (Context) CXXForRangeStmt(Empty);
2816       break;
2817 
2818     case STMT_MS_DEPENDENT_EXISTS:
2819       S = new (Context) MSDependentExistsStmt(SourceLocation(), true,
2820                                               NestedNameSpecifierLoc(),
2821                                               DeclarationNameInfo(),
2822                                               nullptr);
2823       break;
2824 
2825     case STMT_OMP_PARALLEL_DIRECTIVE:
2826       S =
2827         OMPParallelDirective::CreateEmpty(Context,
2828                                           Record[ASTStmtReader::NumStmtFields],
2829                                           Empty);
2830       break;
2831 
2832     case STMT_OMP_SIMD_DIRECTIVE: {
2833       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2834       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2835       S = OMPSimdDirective::CreateEmpty(Context, NumClauses,
2836                                         CollapsedNum, Empty);
2837       break;
2838     }
2839 
2840     case STMT_OMP_FOR_DIRECTIVE: {
2841       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2842       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2843       S = OMPForDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
2844                                        Empty);
2845       break;
2846     }
2847 
2848     case STMT_OMP_FOR_SIMD_DIRECTIVE: {
2849       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2850       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2851       S = OMPForSimdDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
2852                                            Empty);
2853       break;
2854     }
2855 
2856     case STMT_OMP_SECTIONS_DIRECTIVE:
2857       S = OMPSectionsDirective::CreateEmpty(
2858           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2859       break;
2860 
2861     case STMT_OMP_SECTION_DIRECTIVE:
2862       S = OMPSectionDirective::CreateEmpty(Context, Empty);
2863       break;
2864 
2865     case STMT_OMP_SINGLE_DIRECTIVE:
2866       S = OMPSingleDirective::CreateEmpty(
2867           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2868       break;
2869 
2870     case STMT_OMP_MASTER_DIRECTIVE:
2871       S = OMPMasterDirective::CreateEmpty(Context, Empty);
2872       break;
2873 
2874     case STMT_OMP_CRITICAL_DIRECTIVE:
2875       S = OMPCriticalDirective::CreateEmpty(
2876           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2877       break;
2878 
2879     case STMT_OMP_PARALLEL_FOR_DIRECTIVE: {
2880       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2881       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2882       S = OMPParallelForDirective::CreateEmpty(Context, NumClauses,
2883                                                CollapsedNum, Empty);
2884       break;
2885     }
2886 
2887     case STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE: {
2888       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2889       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2890       S = OMPParallelForSimdDirective::CreateEmpty(Context, NumClauses,
2891                                                    CollapsedNum, Empty);
2892       break;
2893     }
2894 
2895     case STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE:
2896       S = OMPParallelSectionsDirective::CreateEmpty(
2897           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2898       break;
2899 
2900     case STMT_OMP_TASK_DIRECTIVE:
2901       S = OMPTaskDirective::CreateEmpty(
2902           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2903       break;
2904 
2905     case STMT_OMP_TASKYIELD_DIRECTIVE:
2906       S = OMPTaskyieldDirective::CreateEmpty(Context, Empty);
2907       break;
2908 
2909     case STMT_OMP_BARRIER_DIRECTIVE:
2910       S = OMPBarrierDirective::CreateEmpty(Context, Empty);
2911       break;
2912 
2913     case STMT_OMP_TASKWAIT_DIRECTIVE:
2914       S = OMPTaskwaitDirective::CreateEmpty(Context, Empty);
2915       break;
2916 
2917     case STMT_OMP_TASKGROUP_DIRECTIVE:
2918       S = OMPTaskgroupDirective::CreateEmpty(
2919           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2920       break;
2921 
2922     case STMT_OMP_FLUSH_DIRECTIVE:
2923       S = OMPFlushDirective::CreateEmpty(
2924           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2925       break;
2926 
2927     case STMT_OMP_ORDERED_DIRECTIVE:
2928       S = OMPOrderedDirective::CreateEmpty(
2929           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2930       break;
2931 
2932     case STMT_OMP_ATOMIC_DIRECTIVE:
2933       S = OMPAtomicDirective::CreateEmpty(
2934           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2935       break;
2936 
2937     case STMT_OMP_TARGET_DIRECTIVE:
2938       S = OMPTargetDirective::CreateEmpty(
2939           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2940       break;
2941 
2942     case STMT_OMP_TARGET_DATA_DIRECTIVE:
2943       S = OMPTargetDataDirective::CreateEmpty(
2944           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2945       break;
2946 
2947     case STMT_OMP_TARGET_ENTER_DATA_DIRECTIVE:
2948       S = OMPTargetEnterDataDirective::CreateEmpty(
2949           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2950       break;
2951 
2952     case STMT_OMP_TARGET_EXIT_DATA_DIRECTIVE:
2953       S = OMPTargetExitDataDirective::CreateEmpty(
2954           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2955       break;
2956 
2957     case STMT_OMP_TARGET_PARALLEL_DIRECTIVE:
2958       S = OMPTargetParallelDirective::CreateEmpty(
2959           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2960       break;
2961 
2962     case STMT_OMP_TARGET_PARALLEL_FOR_DIRECTIVE: {
2963       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2964       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2965       S = OMPTargetParallelForDirective::CreateEmpty(Context, NumClauses,
2966                                                      CollapsedNum, Empty);
2967       break;
2968     }
2969 
2970     case STMT_OMP_TARGET_UPDATE_DIRECTIVE:
2971       S = OMPTargetUpdateDirective::CreateEmpty(
2972           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2973       break;
2974 
2975     case STMT_OMP_TEAMS_DIRECTIVE:
2976       S = OMPTeamsDirective::CreateEmpty(
2977           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2978       break;
2979 
2980     case STMT_OMP_CANCELLATION_POINT_DIRECTIVE:
2981       S = OMPCancellationPointDirective::CreateEmpty(Context, Empty);
2982       break;
2983 
2984     case STMT_OMP_CANCEL_DIRECTIVE:
2985       S = OMPCancelDirective::CreateEmpty(
2986           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2987       break;
2988 
2989     case STMT_OMP_TASKLOOP_DIRECTIVE: {
2990       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2991       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2992       S = OMPTaskLoopDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
2993                                             Empty);
2994       break;
2995     }
2996 
2997     case STMT_OMP_TASKLOOP_SIMD_DIRECTIVE: {
2998       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2999       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3000       S = OMPTaskLoopSimdDirective::CreateEmpty(Context, NumClauses,
3001                                                 CollapsedNum, Empty);
3002       break;
3003     }
3004 
3005     case STMT_OMP_DISTRIBUTE_DIRECTIVE: {
3006       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3007       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3008       S = OMPDistributeDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3009                                               Empty);
3010       break;
3011     }
3012 
3013     case STMT_OMP_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3014       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3015       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3016       S = OMPDistributeParallelForDirective::CreateEmpty(Context, NumClauses,
3017                                                          CollapsedNum, Empty);
3018       break;
3019     }
3020 
3021     case STMT_OMP_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3022       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3023       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3024       S = OMPDistributeParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3025                                                              CollapsedNum,
3026                                                              Empty);
3027       break;
3028     }
3029 
3030     case STMT_OMP_DISTRIBUTE_SIMD_DIRECTIVE: {
3031       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3032       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3033       S = OMPDistributeSimdDirective::CreateEmpty(Context, NumClauses,
3034                                                   CollapsedNum, Empty);
3035       break;
3036     }
3037 
3038     case STMT_OMP_TARGET_PARALLEL_FOR_SIMD_DIRECTIVE: {
3039       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3040       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3041       S = OMPTargetParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3042                                                          CollapsedNum, Empty);
3043       break;
3044     }
3045 
3046     case STMT_OMP_TARGET_SIMD_DIRECTIVE: {
3047       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3048       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3049       S = OMPTargetSimdDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3050                                               Empty);
3051       break;
3052     }
3053 
3054      case STMT_OMP_TEAMS_DISTRIBUTE_DIRECTIVE: {
3055       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3056       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3057       S = OMPTeamsDistributeDirective::CreateEmpty(Context, NumClauses,
3058                                                    CollapsedNum, Empty);
3059       break;
3060     }
3061 
3062     case STMT_OMP_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE: {
3063       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3064       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3065       S = OMPTeamsDistributeSimdDirective::CreateEmpty(Context, NumClauses,
3066                                                        CollapsedNum, Empty);
3067       break;
3068     }
3069 
3070     case STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3071       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3072       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3073       S = OMPTeamsDistributeParallelForSimdDirective::CreateEmpty(
3074           Context, NumClauses, CollapsedNum, Empty);
3075       break;
3076     }
3077 
3078     case STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3079       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3080       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3081       S = OMPTeamsDistributeParallelForDirective::CreateEmpty(
3082           Context, NumClauses, CollapsedNum, Empty);
3083       break;
3084     }
3085 
3086     case STMT_OMP_TARGET_TEAMS_DIRECTIVE:
3087       S = OMPTargetTeamsDirective::CreateEmpty(
3088           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3089       break;
3090 
3091     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_DIRECTIVE: {
3092       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3093       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3094       S = OMPTargetTeamsDistributeDirective::CreateEmpty(Context, NumClauses,
3095                                                          CollapsedNum, Empty);
3096       break;
3097     }
3098 
3099     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3100       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3101       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3102       S = OMPTargetTeamsDistributeParallelForDirective::CreateEmpty(
3103           Context, NumClauses, CollapsedNum, Empty);
3104       break;
3105     }
3106 
3107     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3108       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3109       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3110       S = OMPTargetTeamsDistributeParallelForSimdDirective::CreateEmpty(
3111           Context, NumClauses, CollapsedNum, Empty);
3112       break;
3113     }
3114 
3115     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE: {
3116       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3117       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3118       S = OMPTargetTeamsDistributeSimdDirective::CreateEmpty(
3119           Context, NumClauses, CollapsedNum, Empty);
3120       break;
3121     }
3122 
3123     case EXPR_CXX_OPERATOR_CALL:
3124       S = CXXOperatorCallExpr::CreateEmpty(
3125           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3126       break;
3127 
3128     case EXPR_CXX_MEMBER_CALL:
3129       S = CXXMemberCallExpr::CreateEmpty(
3130           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3131       break;
3132 
3133     case EXPR_CXX_CONSTRUCT:
3134       S = CXXConstructExpr::CreateEmpty(
3135           Context,
3136           /* NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3137       break;
3138 
3139     case EXPR_CXX_INHERITED_CTOR_INIT:
3140       S = new (Context) CXXInheritedCtorInitExpr(Empty);
3141       break;
3142 
3143     case EXPR_CXX_TEMPORARY_OBJECT:
3144       S = CXXTemporaryObjectExpr::CreateEmpty(
3145           Context,
3146           /* NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3147       break;
3148 
3149     case EXPR_CXX_STATIC_CAST:
3150       S = CXXStaticCastExpr::CreateEmpty(Context,
3151                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3152       break;
3153 
3154     case EXPR_CXX_DYNAMIC_CAST:
3155       S = CXXDynamicCastExpr::CreateEmpty(Context,
3156                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3157       break;
3158 
3159     case EXPR_CXX_REINTERPRET_CAST:
3160       S = CXXReinterpretCastExpr::CreateEmpty(Context,
3161                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3162       break;
3163 
3164     case EXPR_CXX_CONST_CAST:
3165       S = CXXConstCastExpr::CreateEmpty(Context);
3166       break;
3167 
3168     case EXPR_CXX_FUNCTIONAL_CAST:
3169       S = CXXFunctionalCastExpr::CreateEmpty(Context,
3170                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3171       break;
3172 
3173     case EXPR_USER_DEFINED_LITERAL:
3174       S = UserDefinedLiteral::CreateEmpty(
3175           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3176       break;
3177 
3178     case EXPR_CXX_STD_INITIALIZER_LIST:
3179       S = new (Context) CXXStdInitializerListExpr(Empty);
3180       break;
3181 
3182     case EXPR_CXX_BOOL_LITERAL:
3183       S = new (Context) CXXBoolLiteralExpr(Empty);
3184       break;
3185 
3186     case EXPR_CXX_NULL_PTR_LITERAL:
3187       S = new (Context) CXXNullPtrLiteralExpr(Empty);
3188       break;
3189 
3190     case EXPR_CXX_TYPEID_EXPR:
3191       S = new (Context) CXXTypeidExpr(Empty, true);
3192       break;
3193 
3194     case EXPR_CXX_TYPEID_TYPE:
3195       S = new (Context) CXXTypeidExpr(Empty, false);
3196       break;
3197 
3198     case EXPR_CXX_UUIDOF_EXPR:
3199       S = new (Context) CXXUuidofExpr(Empty, true);
3200       break;
3201 
3202     case EXPR_CXX_PROPERTY_REF_EXPR:
3203       S = new (Context) MSPropertyRefExpr(Empty);
3204       break;
3205 
3206     case EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR:
3207       S = new (Context) MSPropertySubscriptExpr(Empty);
3208       break;
3209 
3210     case EXPR_CXX_UUIDOF_TYPE:
3211       S = new (Context) CXXUuidofExpr(Empty, false);
3212       break;
3213 
3214     case EXPR_CXX_THIS:
3215       S = new (Context) CXXThisExpr(Empty);
3216       break;
3217 
3218     case EXPR_CXX_THROW:
3219       S = new (Context) CXXThrowExpr(Empty);
3220       break;
3221 
3222     case EXPR_CXX_DEFAULT_ARG:
3223       S = new (Context) CXXDefaultArgExpr(Empty);
3224       break;
3225 
3226     case EXPR_CXX_DEFAULT_INIT:
3227       S = new (Context) CXXDefaultInitExpr(Empty);
3228       break;
3229 
3230     case EXPR_CXX_BIND_TEMPORARY:
3231       S = new (Context) CXXBindTemporaryExpr(Empty);
3232       break;
3233 
3234     case EXPR_CXX_SCALAR_VALUE_INIT:
3235       S = new (Context) CXXScalarValueInitExpr(Empty);
3236       break;
3237 
3238     case EXPR_CXX_NEW:
3239       S = CXXNewExpr::CreateEmpty(
3240           Context,
3241           /*IsArray=*/Record[ASTStmtReader::NumExprFields],
3242           /*HasInit=*/Record[ASTStmtReader::NumExprFields + 1],
3243           /*NumPlacementArgs=*/Record[ASTStmtReader::NumExprFields + 2],
3244           /*IsParenTypeId=*/Record[ASTStmtReader::NumExprFields + 3]);
3245       break;
3246 
3247     case EXPR_CXX_DELETE:
3248       S = new (Context) CXXDeleteExpr(Empty);
3249       break;
3250 
3251     case EXPR_CXX_PSEUDO_DESTRUCTOR:
3252       S = new (Context) CXXPseudoDestructorExpr(Empty);
3253       break;
3254 
3255     case EXPR_EXPR_WITH_CLEANUPS:
3256       S = ExprWithCleanups::Create(Context, Empty,
3257                                    Record[ASTStmtReader::NumExprFields]);
3258       break;
3259 
3260     case EXPR_CXX_DEPENDENT_SCOPE_MEMBER:
3261       S = CXXDependentScopeMemberExpr::CreateEmpty(
3262           Context,
3263           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields],
3264           /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 1],
3265           /*HasFirstQualifierFoundInScope=*/
3266           Record[ASTStmtReader::NumExprFields + 2]);
3267       break;
3268 
3269     case EXPR_CXX_DEPENDENT_SCOPE_DECL_REF:
3270       S = DependentScopeDeclRefExpr::CreateEmpty(Context,
3271          /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields],
3272                   /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]
3273                                    ? Record[ASTStmtReader::NumExprFields + 1]
3274                                    : 0);
3275       break;
3276 
3277     case EXPR_CXX_UNRESOLVED_CONSTRUCT:
3278       S = CXXUnresolvedConstructExpr::CreateEmpty(Context,
3279                               /*NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3280       break;
3281 
3282     case EXPR_CXX_UNRESOLVED_MEMBER:
3283       S = UnresolvedMemberExpr::CreateEmpty(
3284           Context,
3285           /*NumResults=*/Record[ASTStmtReader::NumExprFields],
3286           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 1],
3287           /*NumTemplateArgs=*/
3288           Record[ASTStmtReader::NumExprFields + 1]
3289               ? Record[ASTStmtReader::NumExprFields + 2]
3290               : 0);
3291       break;
3292 
3293     case EXPR_CXX_UNRESOLVED_LOOKUP:
3294       S = UnresolvedLookupExpr::CreateEmpty(
3295           Context,
3296           /*NumResults=*/Record[ASTStmtReader::NumExprFields],
3297           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 1],
3298           /*NumTemplateArgs=*/
3299           Record[ASTStmtReader::NumExprFields + 1]
3300               ? Record[ASTStmtReader::NumExprFields + 2]
3301               : 0);
3302       break;
3303 
3304     case EXPR_TYPE_TRAIT:
3305       S = TypeTraitExpr::CreateDeserialized(Context,
3306             Record[ASTStmtReader::NumExprFields]);
3307       break;
3308 
3309     case EXPR_ARRAY_TYPE_TRAIT:
3310       S = new (Context) ArrayTypeTraitExpr(Empty);
3311       break;
3312 
3313     case EXPR_CXX_EXPRESSION_TRAIT:
3314       S = new (Context) ExpressionTraitExpr(Empty);
3315       break;
3316 
3317     case EXPR_CXX_NOEXCEPT:
3318       S = new (Context) CXXNoexceptExpr(Empty);
3319       break;
3320 
3321     case EXPR_PACK_EXPANSION:
3322       S = new (Context) PackExpansionExpr(Empty);
3323       break;
3324 
3325     case EXPR_SIZEOF_PACK:
3326       S = SizeOfPackExpr::CreateDeserialized(
3327               Context,
3328               /*NumPartialArgs=*/Record[ASTStmtReader::NumExprFields]);
3329       break;
3330 
3331     case EXPR_SUBST_NON_TYPE_TEMPLATE_PARM:
3332       S = new (Context) SubstNonTypeTemplateParmExpr(Empty);
3333       break;
3334 
3335     case EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK:
3336       S = new (Context) SubstNonTypeTemplateParmPackExpr(Empty);
3337       break;
3338 
3339     case EXPR_FUNCTION_PARM_PACK:
3340       S = FunctionParmPackExpr::CreateEmpty(Context,
3341                                           Record[ASTStmtReader::NumExprFields]);
3342       break;
3343 
3344     case EXPR_MATERIALIZE_TEMPORARY:
3345       S = new (Context) MaterializeTemporaryExpr(Empty);
3346       break;
3347 
3348     case EXPR_CXX_FOLD:
3349       S = new (Context) CXXFoldExpr(Empty);
3350       break;
3351 
3352     case EXPR_OPAQUE_VALUE:
3353       S = new (Context) OpaqueValueExpr(Empty);
3354       break;
3355 
3356     case EXPR_CUDA_KERNEL_CALL:
3357       S = CUDAKernelCallExpr::CreateEmpty(
3358           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3359       break;
3360 
3361     case EXPR_ASTYPE:
3362       S = new (Context) AsTypeExpr(Empty);
3363       break;
3364 
3365     case EXPR_PSEUDO_OBJECT: {
3366       unsigned numSemanticExprs = Record[ASTStmtReader::NumExprFields];
3367       S = PseudoObjectExpr::Create(Context, Empty, numSemanticExprs);
3368       break;
3369     }
3370 
3371     case EXPR_ATOMIC:
3372       S = new (Context) AtomicExpr(Empty);
3373       break;
3374 
3375     case EXPR_LAMBDA: {
3376       unsigned NumCaptures = Record[ASTStmtReader::NumExprFields];
3377       S = LambdaExpr::CreateDeserialized(Context, NumCaptures);
3378       break;
3379     }
3380 
3381     case STMT_COROUTINE_BODY: {
3382       unsigned NumParams = Record[ASTStmtReader::NumStmtFields];
3383       S = CoroutineBodyStmt::Create(Context, Empty, NumParams);
3384       break;
3385     }
3386 
3387     case STMT_CORETURN:
3388       S = new (Context) CoreturnStmt(Empty);
3389       break;
3390 
3391     case EXPR_COAWAIT:
3392       S = new (Context) CoawaitExpr(Empty);
3393       break;
3394 
3395     case EXPR_COYIELD:
3396       S = new (Context) CoyieldExpr(Empty);
3397       break;
3398 
3399     case EXPR_DEPENDENT_COAWAIT:
3400       S = new (Context) DependentCoawaitExpr(Empty);
3401       break;
3402     }
3403 
3404     // We hit a STMT_STOP, so we're done with this expression.
3405     if (Finished)
3406       break;
3407 
3408     ++NumStatementsRead;
3409 
3410     if (S && !IsStmtReference) {
3411       Reader.Visit(S);
3412       StmtEntries[Cursor.GetCurrentBitNo()] = S;
3413     }
3414 
3415     assert(Record.getIdx() == Record.size() &&
3416            "Invalid deserialization of statement");
3417     StmtStack.push_back(S);
3418   }
3419 Done:
3420   assert(StmtStack.size() > PrevNumStmts && "Read too many sub-stmts!");
3421   assert(StmtStack.size() == PrevNumStmts + 1 && "Extra expressions on stack!");
3422   return StmtStack.pop_back_val();
3423 }
3424