xref: /freebsd/contrib/llvm-project/clang/lib/Serialization/ASTWriterStmt.cpp (revision 734e82fe33aa764367791a7d603b383996c6b40b)
1 //===--- ASTWriterStmt.cpp - Statement and Expression Serialization -------===//
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 /// \file
10 /// Implements serialization for Statements and Expressions.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/AST/ExprOpenMP.h"
15 #include "clang/Serialization/ASTRecordWriter.h"
16 #include "clang/Sema/DeclSpec.h"
17 #include "clang/AST/ASTContext.h"
18 #include "clang/AST/DeclCXX.h"
19 #include "clang/AST/DeclObjC.h"
20 #include "clang/AST/DeclTemplate.h"
21 #include "clang/AST/StmtVisitor.h"
22 #include "clang/Lex/Token.h"
23 #include "llvm/Bitstream/BitstreamWriter.h"
24 using namespace clang;
25 
26 //===----------------------------------------------------------------------===//
27 // Statement/expression serialization
28 //===----------------------------------------------------------------------===//
29 
30 namespace clang {
31 
32   class ASTStmtWriter : public StmtVisitor<ASTStmtWriter, void> {
33     ASTWriter &Writer;
34     ASTRecordWriter Record;
35 
36     serialization::StmtCode Code;
37     unsigned AbbrevToUse;
38 
39   public:
40     ASTStmtWriter(ASTWriter &Writer, ASTWriter::RecordData &Record)
41         : Writer(Writer), Record(Writer, Record),
42           Code(serialization::STMT_NULL_PTR), AbbrevToUse(0) {}
43 
44     ASTStmtWriter(const ASTStmtWriter&) = delete;
45 
46     uint64_t Emit() {
47       assert(Code != serialization::STMT_NULL_PTR &&
48              "unhandled sub-statement writing AST file");
49       return Record.EmitStmt(Code, AbbrevToUse);
50     }
51 
52     void AddTemplateKWAndArgsInfo(const ASTTemplateKWAndArgsInfo &ArgInfo,
53                                   const TemplateArgumentLoc *Args);
54 
55     void VisitStmt(Stmt *S);
56 #define STMT(Type, Base) \
57     void Visit##Type(Type *);
58 #include "clang/AST/StmtNodes.inc"
59   };
60 }
61 
62 void ASTStmtWriter::AddTemplateKWAndArgsInfo(
63     const ASTTemplateKWAndArgsInfo &ArgInfo, const TemplateArgumentLoc *Args) {
64   Record.AddSourceLocation(ArgInfo.TemplateKWLoc);
65   Record.AddSourceLocation(ArgInfo.LAngleLoc);
66   Record.AddSourceLocation(ArgInfo.RAngleLoc);
67   for (unsigned i = 0; i != ArgInfo.NumTemplateArgs; ++i)
68     Record.AddTemplateArgumentLoc(Args[i]);
69 }
70 
71 void ASTStmtWriter::VisitStmt(Stmt *S) {
72 }
73 
74 void ASTStmtWriter::VisitNullStmt(NullStmt *S) {
75   VisitStmt(S);
76   Record.AddSourceLocation(S->getSemiLoc());
77   Record.push_back(S->NullStmtBits.HasLeadingEmptyMacro);
78   Code = serialization::STMT_NULL;
79 }
80 
81 void ASTStmtWriter::VisitCompoundStmt(CompoundStmt *S) {
82   VisitStmt(S);
83   Record.push_back(S->size());
84   Record.push_back(S->hasStoredFPFeatures());
85   for (auto *CS : S->body())
86     Record.AddStmt(CS);
87   if (S->hasStoredFPFeatures())
88     Record.push_back(S->getStoredFPFeatures().getAsOpaqueInt());
89   Record.AddSourceLocation(S->getLBracLoc());
90   Record.AddSourceLocation(S->getRBracLoc());
91   Code = serialization::STMT_COMPOUND;
92 }
93 
94 void ASTStmtWriter::VisitSwitchCase(SwitchCase *S) {
95   VisitStmt(S);
96   Record.push_back(Writer.getSwitchCaseID(S));
97   Record.AddSourceLocation(S->getKeywordLoc());
98   Record.AddSourceLocation(S->getColonLoc());
99 }
100 
101 void ASTStmtWriter::VisitCaseStmt(CaseStmt *S) {
102   VisitSwitchCase(S);
103   Record.push_back(S->caseStmtIsGNURange());
104   Record.AddStmt(S->getLHS());
105   Record.AddStmt(S->getSubStmt());
106   if (S->caseStmtIsGNURange()) {
107     Record.AddStmt(S->getRHS());
108     Record.AddSourceLocation(S->getEllipsisLoc());
109   }
110   Code = serialization::STMT_CASE;
111 }
112 
113 void ASTStmtWriter::VisitDefaultStmt(DefaultStmt *S) {
114   VisitSwitchCase(S);
115   Record.AddStmt(S->getSubStmt());
116   Code = serialization::STMT_DEFAULT;
117 }
118 
119 void ASTStmtWriter::VisitLabelStmt(LabelStmt *S) {
120   VisitStmt(S);
121   Record.push_back(S->isSideEntry());
122   Record.AddDeclRef(S->getDecl());
123   Record.AddStmt(S->getSubStmt());
124   Record.AddSourceLocation(S->getIdentLoc());
125   Code = serialization::STMT_LABEL;
126 }
127 
128 void ASTStmtWriter::VisitAttributedStmt(AttributedStmt *S) {
129   VisitStmt(S);
130   Record.push_back(S->getAttrs().size());
131   Record.AddAttributes(S->getAttrs());
132   Record.AddStmt(S->getSubStmt());
133   Record.AddSourceLocation(S->getAttrLoc());
134   Code = serialization::STMT_ATTRIBUTED;
135 }
136 
137 void ASTStmtWriter::VisitIfStmt(IfStmt *S) {
138   VisitStmt(S);
139 
140   bool HasElse = S->getElse() != nullptr;
141   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
142   bool HasInit = S->getInit() != nullptr;
143 
144   Record.push_back(HasElse);
145   Record.push_back(HasVar);
146   Record.push_back(HasInit);
147   Record.push_back(static_cast<uint64_t>(S->getStatementKind()));
148   Record.AddStmt(S->getCond());
149   Record.AddStmt(S->getThen());
150   if (HasElse)
151     Record.AddStmt(S->getElse());
152   if (HasVar)
153     Record.AddDeclRef(S->getConditionVariable());
154   if (HasInit)
155     Record.AddStmt(S->getInit());
156 
157   Record.AddSourceLocation(S->getIfLoc());
158   Record.AddSourceLocation(S->getLParenLoc());
159   Record.AddSourceLocation(S->getRParenLoc());
160   if (HasElse)
161     Record.AddSourceLocation(S->getElseLoc());
162 
163   Code = serialization::STMT_IF;
164 }
165 
166 void ASTStmtWriter::VisitSwitchStmt(SwitchStmt *S) {
167   VisitStmt(S);
168 
169   bool HasInit = S->getInit() != nullptr;
170   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
171   Record.push_back(HasInit);
172   Record.push_back(HasVar);
173   Record.push_back(S->isAllEnumCasesCovered());
174 
175   Record.AddStmt(S->getCond());
176   Record.AddStmt(S->getBody());
177   if (HasInit)
178     Record.AddStmt(S->getInit());
179   if (HasVar)
180     Record.AddDeclRef(S->getConditionVariable());
181 
182   Record.AddSourceLocation(S->getSwitchLoc());
183   Record.AddSourceLocation(S->getLParenLoc());
184   Record.AddSourceLocation(S->getRParenLoc());
185 
186   for (SwitchCase *SC = S->getSwitchCaseList(); SC;
187        SC = SC->getNextSwitchCase())
188     Record.push_back(Writer.RecordSwitchCaseID(SC));
189   Code = serialization::STMT_SWITCH;
190 }
191 
192 void ASTStmtWriter::VisitWhileStmt(WhileStmt *S) {
193   VisitStmt(S);
194 
195   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
196   Record.push_back(HasVar);
197 
198   Record.AddStmt(S->getCond());
199   Record.AddStmt(S->getBody());
200   if (HasVar)
201     Record.AddDeclRef(S->getConditionVariable());
202 
203   Record.AddSourceLocation(S->getWhileLoc());
204   Record.AddSourceLocation(S->getLParenLoc());
205   Record.AddSourceLocation(S->getRParenLoc());
206   Code = serialization::STMT_WHILE;
207 }
208 
209 void ASTStmtWriter::VisitDoStmt(DoStmt *S) {
210   VisitStmt(S);
211   Record.AddStmt(S->getCond());
212   Record.AddStmt(S->getBody());
213   Record.AddSourceLocation(S->getDoLoc());
214   Record.AddSourceLocation(S->getWhileLoc());
215   Record.AddSourceLocation(S->getRParenLoc());
216   Code = serialization::STMT_DO;
217 }
218 
219 void ASTStmtWriter::VisitForStmt(ForStmt *S) {
220   VisitStmt(S);
221   Record.AddStmt(S->getInit());
222   Record.AddStmt(S->getCond());
223   Record.AddDeclRef(S->getConditionVariable());
224   Record.AddStmt(S->getInc());
225   Record.AddStmt(S->getBody());
226   Record.AddSourceLocation(S->getForLoc());
227   Record.AddSourceLocation(S->getLParenLoc());
228   Record.AddSourceLocation(S->getRParenLoc());
229   Code = serialization::STMT_FOR;
230 }
231 
232 void ASTStmtWriter::VisitGotoStmt(GotoStmt *S) {
233   VisitStmt(S);
234   Record.AddDeclRef(S->getLabel());
235   Record.AddSourceLocation(S->getGotoLoc());
236   Record.AddSourceLocation(S->getLabelLoc());
237   Code = serialization::STMT_GOTO;
238 }
239 
240 void ASTStmtWriter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
241   VisitStmt(S);
242   Record.AddSourceLocation(S->getGotoLoc());
243   Record.AddSourceLocation(S->getStarLoc());
244   Record.AddStmt(S->getTarget());
245   Code = serialization::STMT_INDIRECT_GOTO;
246 }
247 
248 void ASTStmtWriter::VisitContinueStmt(ContinueStmt *S) {
249   VisitStmt(S);
250   Record.AddSourceLocation(S->getContinueLoc());
251   Code = serialization::STMT_CONTINUE;
252 }
253 
254 void ASTStmtWriter::VisitBreakStmt(BreakStmt *S) {
255   VisitStmt(S);
256   Record.AddSourceLocation(S->getBreakLoc());
257   Code = serialization::STMT_BREAK;
258 }
259 
260 void ASTStmtWriter::VisitReturnStmt(ReturnStmt *S) {
261   VisitStmt(S);
262 
263   bool HasNRVOCandidate = S->getNRVOCandidate() != nullptr;
264   Record.push_back(HasNRVOCandidate);
265 
266   Record.AddStmt(S->getRetValue());
267   if (HasNRVOCandidate)
268     Record.AddDeclRef(S->getNRVOCandidate());
269 
270   Record.AddSourceLocation(S->getReturnLoc());
271   Code = serialization::STMT_RETURN;
272 }
273 
274 void ASTStmtWriter::VisitDeclStmt(DeclStmt *S) {
275   VisitStmt(S);
276   Record.AddSourceLocation(S->getBeginLoc());
277   Record.AddSourceLocation(S->getEndLoc());
278   DeclGroupRef DG = S->getDeclGroup();
279   for (DeclGroupRef::iterator D = DG.begin(), DEnd = DG.end(); D != DEnd; ++D)
280     Record.AddDeclRef(*D);
281   Code = serialization::STMT_DECL;
282 }
283 
284 void ASTStmtWriter::VisitAsmStmt(AsmStmt *S) {
285   VisitStmt(S);
286   Record.push_back(S->getNumOutputs());
287   Record.push_back(S->getNumInputs());
288   Record.push_back(S->getNumClobbers());
289   Record.AddSourceLocation(S->getAsmLoc());
290   Record.push_back(S->isVolatile());
291   Record.push_back(S->isSimple());
292 }
293 
294 void ASTStmtWriter::VisitGCCAsmStmt(GCCAsmStmt *S) {
295   VisitAsmStmt(S);
296   Record.push_back(S->getNumLabels());
297   Record.AddSourceLocation(S->getRParenLoc());
298   Record.AddStmt(S->getAsmString());
299 
300   // Outputs
301   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
302     Record.AddIdentifierRef(S->getOutputIdentifier(I));
303     Record.AddStmt(S->getOutputConstraintLiteral(I));
304     Record.AddStmt(S->getOutputExpr(I));
305   }
306 
307   // Inputs
308   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
309     Record.AddIdentifierRef(S->getInputIdentifier(I));
310     Record.AddStmt(S->getInputConstraintLiteral(I));
311     Record.AddStmt(S->getInputExpr(I));
312   }
313 
314   // Clobbers
315   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
316     Record.AddStmt(S->getClobberStringLiteral(I));
317 
318   // Labels
319   for (auto *E : S->labels()) Record.AddStmt(E);
320 
321   Code = serialization::STMT_GCCASM;
322 }
323 
324 void ASTStmtWriter::VisitMSAsmStmt(MSAsmStmt *S) {
325   VisitAsmStmt(S);
326   Record.AddSourceLocation(S->getLBraceLoc());
327   Record.AddSourceLocation(S->getEndLoc());
328   Record.push_back(S->getNumAsmToks());
329   Record.AddString(S->getAsmString());
330 
331   // Tokens
332   for (unsigned I = 0, N = S->getNumAsmToks(); I != N; ++I) {
333     // FIXME: Move this to ASTRecordWriter?
334     Writer.AddToken(S->getAsmToks()[I], Record.getRecordData());
335   }
336 
337   // Clobbers
338   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I) {
339     Record.AddString(S->getClobber(I));
340   }
341 
342   // Outputs
343   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
344     Record.AddStmt(S->getOutputExpr(I));
345     Record.AddString(S->getOutputConstraint(I));
346   }
347 
348   // Inputs
349   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
350     Record.AddStmt(S->getInputExpr(I));
351     Record.AddString(S->getInputConstraint(I));
352   }
353 
354   Code = serialization::STMT_MSASM;
355 }
356 
357 void ASTStmtWriter::VisitCoroutineBodyStmt(CoroutineBodyStmt *CoroStmt) {
358   VisitStmt(CoroStmt);
359   Record.push_back(CoroStmt->getParamMoves().size());
360   for (Stmt *S : CoroStmt->children())
361     Record.AddStmt(S);
362   Code = serialization::STMT_COROUTINE_BODY;
363 }
364 
365 void ASTStmtWriter::VisitCoreturnStmt(CoreturnStmt *S) {
366   VisitStmt(S);
367   Record.AddSourceLocation(S->getKeywordLoc());
368   Record.AddStmt(S->getOperand());
369   Record.AddStmt(S->getPromiseCall());
370   Record.push_back(S->isImplicit());
371   Code = serialization::STMT_CORETURN;
372 }
373 
374 void ASTStmtWriter::VisitCoroutineSuspendExpr(CoroutineSuspendExpr *E) {
375   VisitExpr(E);
376   Record.AddSourceLocation(E->getKeywordLoc());
377   for (Stmt *S : E->children())
378     Record.AddStmt(S);
379   Record.AddStmt(E->getOpaqueValue());
380 }
381 
382 void ASTStmtWriter::VisitCoawaitExpr(CoawaitExpr *E) {
383   VisitCoroutineSuspendExpr(E);
384   Record.push_back(E->isImplicit());
385   Code = serialization::EXPR_COAWAIT;
386 }
387 
388 void ASTStmtWriter::VisitCoyieldExpr(CoyieldExpr *E) {
389   VisitCoroutineSuspendExpr(E);
390   Code = serialization::EXPR_COYIELD;
391 }
392 
393 void ASTStmtWriter::VisitDependentCoawaitExpr(DependentCoawaitExpr *E) {
394   VisitExpr(E);
395   Record.AddSourceLocation(E->getKeywordLoc());
396   for (Stmt *S : E->children())
397     Record.AddStmt(S);
398   Code = serialization::EXPR_DEPENDENT_COAWAIT;
399 }
400 
401 static void
402 addConstraintSatisfaction(ASTRecordWriter &Record,
403                           const ASTConstraintSatisfaction &Satisfaction) {
404   Record.push_back(Satisfaction.IsSatisfied);
405   Record.push_back(Satisfaction.ContainsErrors);
406   if (!Satisfaction.IsSatisfied) {
407     Record.push_back(Satisfaction.NumRecords);
408     for (const auto &DetailRecord : Satisfaction) {
409       Record.AddStmt(const_cast<Expr *>(DetailRecord.first));
410       auto *E = DetailRecord.second.dyn_cast<Expr *>();
411       Record.push_back(E == nullptr);
412       if (E)
413         Record.AddStmt(E);
414       else {
415         auto *Diag = DetailRecord.second.get<std::pair<SourceLocation,
416                                                        StringRef> *>();
417         Record.AddSourceLocation(Diag->first);
418         Record.AddString(Diag->second);
419       }
420     }
421   }
422 }
423 
424 static void
425 addSubstitutionDiagnostic(
426     ASTRecordWriter &Record,
427     const concepts::Requirement::SubstitutionDiagnostic *D) {
428   Record.AddString(D->SubstitutedEntity);
429   Record.AddSourceLocation(D->DiagLoc);
430   Record.AddString(D->DiagMessage);
431 }
432 
433 void ASTStmtWriter::VisitConceptSpecializationExpr(
434         ConceptSpecializationExpr *E) {
435   VisitExpr(E);
436   Record.AddNestedNameSpecifierLoc(E->getNestedNameSpecifierLoc());
437   Record.AddSourceLocation(E->getTemplateKWLoc());
438   Record.AddDeclarationNameInfo(E->getConceptNameInfo());
439   Record.AddDeclRef(E->getNamedConcept());
440   Record.AddDeclRef(E->getFoundDecl());
441   Record.AddDeclRef(E->getSpecializationDecl());
442   Record.AddASTTemplateArgumentListInfo(E->getTemplateArgsAsWritten());
443   if (!E->isValueDependent())
444     addConstraintSatisfaction(Record, E->getSatisfaction());
445 
446   Code = serialization::EXPR_CONCEPT_SPECIALIZATION;
447 }
448 
449 void ASTStmtWriter::VisitRequiresExpr(RequiresExpr *E) {
450   VisitExpr(E);
451   Record.push_back(E->getLocalParameters().size());
452   Record.push_back(E->getRequirements().size());
453   Record.AddSourceLocation(E->RequiresExprBits.RequiresKWLoc);
454   Record.push_back(E->RequiresExprBits.IsSatisfied);
455   Record.AddDeclRef(E->getBody());
456   for (ParmVarDecl *P : E->getLocalParameters())
457     Record.AddDeclRef(P);
458   for (concepts::Requirement *R : E->getRequirements()) {
459     if (auto *TypeReq = dyn_cast<concepts::TypeRequirement>(R)) {
460       Record.push_back(concepts::Requirement::RK_Type);
461       Record.push_back(TypeReq->Status);
462       if (TypeReq->Status == concepts::TypeRequirement::SS_SubstitutionFailure)
463         addSubstitutionDiagnostic(Record, TypeReq->getSubstitutionDiagnostic());
464       else
465         Record.AddTypeSourceInfo(TypeReq->getType());
466     } else if (auto *ExprReq = dyn_cast<concepts::ExprRequirement>(R)) {
467       Record.push_back(ExprReq->getKind());
468       Record.push_back(ExprReq->Status);
469       if (ExprReq->isExprSubstitutionFailure()) {
470         addSubstitutionDiagnostic(Record,
471          ExprReq->Value.get<concepts::Requirement::SubstitutionDiagnostic *>());
472       } else
473         Record.AddStmt(ExprReq->Value.get<Expr *>());
474       if (ExprReq->getKind() == concepts::Requirement::RK_Compound) {
475         Record.AddSourceLocation(ExprReq->NoexceptLoc);
476         const auto &RetReq = ExprReq->getReturnTypeRequirement();
477         if (RetReq.isSubstitutionFailure()) {
478           Record.push_back(2);
479           addSubstitutionDiagnostic(Record, RetReq.getSubstitutionDiagnostic());
480         } else if (RetReq.isTypeConstraint()) {
481           Record.push_back(1);
482           Record.AddTemplateParameterList(
483               RetReq.getTypeConstraintTemplateParameterList());
484           if (ExprReq->Status >=
485               concepts::ExprRequirement::SS_ConstraintsNotSatisfied)
486             Record.AddStmt(
487                 ExprReq->getReturnTypeRequirementSubstitutedConstraintExpr());
488         } else {
489           assert(RetReq.isEmpty());
490           Record.push_back(0);
491         }
492       }
493     } else {
494       auto *NestedReq = cast<concepts::NestedRequirement>(R);
495       Record.push_back(concepts::Requirement::RK_Nested);
496       Record.push_back(NestedReq->hasInvalidConstraint());
497       if (NestedReq->hasInvalidConstraint()) {
498         Record.AddString(NestedReq->getInvalidConstraintEntity());
499         addConstraintSatisfaction(Record, *NestedReq->Satisfaction);
500       } else {
501         Record.AddStmt(NestedReq->getConstraintExpr());
502         if (!NestedReq->isDependent())
503           addConstraintSatisfaction(Record, *NestedReq->Satisfaction);
504       }
505     }
506   }
507   Record.AddSourceLocation(E->getEndLoc());
508 
509   Code = serialization::EXPR_REQUIRES;
510 }
511 
512 
513 void ASTStmtWriter::VisitCapturedStmt(CapturedStmt *S) {
514   VisitStmt(S);
515   // NumCaptures
516   Record.push_back(std::distance(S->capture_begin(), S->capture_end()));
517 
518   // CapturedDecl and captured region kind
519   Record.AddDeclRef(S->getCapturedDecl());
520   Record.push_back(S->getCapturedRegionKind());
521 
522   Record.AddDeclRef(S->getCapturedRecordDecl());
523 
524   // Capture inits
525   for (auto *I : S->capture_inits())
526     Record.AddStmt(I);
527 
528   // Body
529   Record.AddStmt(S->getCapturedStmt());
530 
531   // Captures
532   for (const auto &I : S->captures()) {
533     if (I.capturesThis() || I.capturesVariableArrayType())
534       Record.AddDeclRef(nullptr);
535     else
536       Record.AddDeclRef(I.getCapturedVar());
537     Record.push_back(I.getCaptureKind());
538     Record.AddSourceLocation(I.getLocation());
539   }
540 
541   Code = serialization::STMT_CAPTURED;
542 }
543 
544 void ASTStmtWriter::VisitExpr(Expr *E) {
545   VisitStmt(E);
546   Record.AddTypeRef(E->getType());
547   Record.push_back(E->getDependence());
548   Record.push_back(E->getValueKind());
549   Record.push_back(E->getObjectKind());
550 }
551 
552 void ASTStmtWriter::VisitConstantExpr(ConstantExpr *E) {
553   VisitExpr(E);
554   Record.push_back(E->ConstantExprBits.ResultKind);
555 
556   Record.push_back(E->ConstantExprBits.APValueKind);
557   Record.push_back(E->ConstantExprBits.IsUnsigned);
558   Record.push_back(E->ConstantExprBits.BitWidth);
559   // HasCleanup not serialized since we can just query the APValue.
560   Record.push_back(E->ConstantExprBits.IsImmediateInvocation);
561 
562   switch (E->ConstantExprBits.ResultKind) {
563   case ConstantExpr::RSK_None:
564     break;
565   case ConstantExpr::RSK_Int64:
566     Record.push_back(E->Int64Result());
567     break;
568   case ConstantExpr::RSK_APValue:
569     Record.AddAPValue(E->APValueResult());
570     break;
571   default:
572     llvm_unreachable("unexpected ResultKind!");
573   }
574 
575   Record.AddStmt(E->getSubExpr());
576   Code = serialization::EXPR_CONSTANT;
577 }
578 
579 void ASTStmtWriter::VisitSYCLUniqueStableNameExpr(SYCLUniqueStableNameExpr *E) {
580   VisitExpr(E);
581 
582   Record.AddSourceLocation(E->getLocation());
583   Record.AddSourceLocation(E->getLParenLocation());
584   Record.AddSourceLocation(E->getRParenLocation());
585   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
586 
587   Code = serialization::EXPR_SYCL_UNIQUE_STABLE_NAME;
588 }
589 
590 void ASTStmtWriter::VisitPredefinedExpr(PredefinedExpr *E) {
591   VisitExpr(E);
592 
593   bool HasFunctionName = E->getFunctionName() != nullptr;
594   Record.push_back(HasFunctionName);
595   Record.push_back(E->getIdentKind()); // FIXME: stable encoding
596   Record.AddSourceLocation(E->getLocation());
597   if (HasFunctionName)
598     Record.AddStmt(E->getFunctionName());
599   Code = serialization::EXPR_PREDEFINED;
600 }
601 
602 void ASTStmtWriter::VisitDeclRefExpr(DeclRefExpr *E) {
603   VisitExpr(E);
604 
605   Record.push_back(E->hasQualifier());
606   Record.push_back(E->getDecl() != E->getFoundDecl());
607   Record.push_back(E->hasTemplateKWAndArgsInfo());
608   Record.push_back(E->hadMultipleCandidates());
609   Record.push_back(E->refersToEnclosingVariableOrCapture());
610   Record.push_back(E->isNonOdrUse());
611 
612   if (E->hasTemplateKWAndArgsInfo()) {
613     unsigned NumTemplateArgs = E->getNumTemplateArgs();
614     Record.push_back(NumTemplateArgs);
615   }
616 
617   DeclarationName::NameKind nk = (E->getDecl()->getDeclName().getNameKind());
618 
619   if ((!E->hasTemplateKWAndArgsInfo()) && (!E->hasQualifier()) &&
620       (E->getDecl() == E->getFoundDecl()) &&
621       nk == DeclarationName::Identifier &&
622       !E->refersToEnclosingVariableOrCapture() && !E->isNonOdrUse()) {
623     AbbrevToUse = Writer.getDeclRefExprAbbrev();
624   }
625 
626   if (E->hasQualifier())
627     Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
628 
629   if (E->getDecl() != E->getFoundDecl())
630     Record.AddDeclRef(E->getFoundDecl());
631 
632   if (E->hasTemplateKWAndArgsInfo())
633     AddTemplateKWAndArgsInfo(*E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
634                              E->getTrailingObjects<TemplateArgumentLoc>());
635 
636   Record.AddDeclRef(E->getDecl());
637   Record.AddSourceLocation(E->getLocation());
638   Record.AddDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName());
639   Code = serialization::EXPR_DECL_REF;
640 }
641 
642 void ASTStmtWriter::VisitIntegerLiteral(IntegerLiteral *E) {
643   VisitExpr(E);
644   Record.AddSourceLocation(E->getLocation());
645   Record.AddAPInt(E->getValue());
646 
647   if (E->getValue().getBitWidth() == 32) {
648     AbbrevToUse = Writer.getIntegerLiteralAbbrev();
649   }
650 
651   Code = serialization::EXPR_INTEGER_LITERAL;
652 }
653 
654 void ASTStmtWriter::VisitFixedPointLiteral(FixedPointLiteral *E) {
655   VisitExpr(E);
656   Record.AddSourceLocation(E->getLocation());
657   Record.push_back(E->getScale());
658   Record.AddAPInt(E->getValue());
659   Code = serialization::EXPR_FIXEDPOINT_LITERAL;
660 }
661 
662 void ASTStmtWriter::VisitFloatingLiteral(FloatingLiteral *E) {
663   VisitExpr(E);
664   Record.push_back(E->getRawSemantics());
665   Record.push_back(E->isExact());
666   Record.AddAPFloat(E->getValue());
667   Record.AddSourceLocation(E->getLocation());
668   Code = serialization::EXPR_FLOATING_LITERAL;
669 }
670 
671 void ASTStmtWriter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
672   VisitExpr(E);
673   Record.AddStmt(E->getSubExpr());
674   Code = serialization::EXPR_IMAGINARY_LITERAL;
675 }
676 
677 void ASTStmtWriter::VisitStringLiteral(StringLiteral *E) {
678   VisitExpr(E);
679 
680   // Store the various bits of data of StringLiteral.
681   Record.push_back(E->getNumConcatenated());
682   Record.push_back(E->getLength());
683   Record.push_back(E->getCharByteWidth());
684   Record.push_back(E->getKind());
685   Record.push_back(E->isPascal());
686 
687   // Store the trailing array of SourceLocation.
688   for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
689     Record.AddSourceLocation(E->getStrTokenLoc(I));
690 
691   // Store the trailing array of char holding the string data.
692   StringRef StrData = E->getBytes();
693   for (unsigned I = 0, N = E->getByteLength(); I != N; ++I)
694     Record.push_back(StrData[I]);
695 
696   Code = serialization::EXPR_STRING_LITERAL;
697 }
698 
699 void ASTStmtWriter::VisitCharacterLiteral(CharacterLiteral *E) {
700   VisitExpr(E);
701   Record.push_back(E->getValue());
702   Record.AddSourceLocation(E->getLocation());
703   Record.push_back(E->getKind());
704 
705   AbbrevToUse = Writer.getCharacterLiteralAbbrev();
706 
707   Code = serialization::EXPR_CHARACTER_LITERAL;
708 }
709 
710 void ASTStmtWriter::VisitParenExpr(ParenExpr *E) {
711   VisitExpr(E);
712   Record.AddSourceLocation(E->getLParen());
713   Record.AddSourceLocation(E->getRParen());
714   Record.AddStmt(E->getSubExpr());
715   Code = serialization::EXPR_PAREN;
716 }
717 
718 void ASTStmtWriter::VisitParenListExpr(ParenListExpr *E) {
719   VisitExpr(E);
720   Record.push_back(E->getNumExprs());
721   for (auto *SubStmt : E->exprs())
722     Record.AddStmt(SubStmt);
723   Record.AddSourceLocation(E->getLParenLoc());
724   Record.AddSourceLocation(E->getRParenLoc());
725   Code = serialization::EXPR_PAREN_LIST;
726 }
727 
728 void ASTStmtWriter::VisitUnaryOperator(UnaryOperator *E) {
729   VisitExpr(E);
730   bool HasFPFeatures = E->hasStoredFPFeatures();
731   // Write this first for easy access when deserializing, as they affect the
732   // size of the UnaryOperator.
733   Record.push_back(HasFPFeatures);
734   Record.AddStmt(E->getSubExpr());
735   Record.push_back(E->getOpcode()); // FIXME: stable encoding
736   Record.AddSourceLocation(E->getOperatorLoc());
737   Record.push_back(E->canOverflow());
738   if (HasFPFeatures)
739     Record.push_back(E->getStoredFPFeatures().getAsOpaqueInt());
740   Code = serialization::EXPR_UNARY_OPERATOR;
741 }
742 
743 void ASTStmtWriter::VisitOffsetOfExpr(OffsetOfExpr *E) {
744   VisitExpr(E);
745   Record.push_back(E->getNumComponents());
746   Record.push_back(E->getNumExpressions());
747   Record.AddSourceLocation(E->getOperatorLoc());
748   Record.AddSourceLocation(E->getRParenLoc());
749   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
750   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
751     const OffsetOfNode &ON = E->getComponent(I);
752     Record.push_back(ON.getKind()); // FIXME: Stable encoding
753     Record.AddSourceLocation(ON.getSourceRange().getBegin());
754     Record.AddSourceLocation(ON.getSourceRange().getEnd());
755     switch (ON.getKind()) {
756     case OffsetOfNode::Array:
757       Record.push_back(ON.getArrayExprIndex());
758       break;
759 
760     case OffsetOfNode::Field:
761       Record.AddDeclRef(ON.getField());
762       break;
763 
764     case OffsetOfNode::Identifier:
765       Record.AddIdentifierRef(ON.getFieldName());
766       break;
767 
768     case OffsetOfNode::Base:
769       Record.AddCXXBaseSpecifier(*ON.getBase());
770       break;
771     }
772   }
773   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
774     Record.AddStmt(E->getIndexExpr(I));
775   Code = serialization::EXPR_OFFSETOF;
776 }
777 
778 void ASTStmtWriter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
779   VisitExpr(E);
780   Record.push_back(E->getKind());
781   if (E->isArgumentType())
782     Record.AddTypeSourceInfo(E->getArgumentTypeInfo());
783   else {
784     Record.push_back(0);
785     Record.AddStmt(E->getArgumentExpr());
786   }
787   Record.AddSourceLocation(E->getOperatorLoc());
788   Record.AddSourceLocation(E->getRParenLoc());
789   Code = serialization::EXPR_SIZEOF_ALIGN_OF;
790 }
791 
792 void ASTStmtWriter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
793   VisitExpr(E);
794   Record.AddStmt(E->getLHS());
795   Record.AddStmt(E->getRHS());
796   Record.AddSourceLocation(E->getRBracketLoc());
797   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
798 }
799 
800 void ASTStmtWriter::VisitMatrixSubscriptExpr(MatrixSubscriptExpr *E) {
801   VisitExpr(E);
802   Record.AddStmt(E->getBase());
803   Record.AddStmt(E->getRowIdx());
804   Record.AddStmt(E->getColumnIdx());
805   Record.AddSourceLocation(E->getRBracketLoc());
806   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
807 }
808 
809 void ASTStmtWriter::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
810   VisitExpr(E);
811   Record.AddStmt(E->getBase());
812   Record.AddStmt(E->getLowerBound());
813   Record.AddStmt(E->getLength());
814   Record.AddStmt(E->getStride());
815   Record.AddSourceLocation(E->getColonLocFirst());
816   Record.AddSourceLocation(E->getColonLocSecond());
817   Record.AddSourceLocation(E->getRBracketLoc());
818   Code = serialization::EXPR_OMP_ARRAY_SECTION;
819 }
820 
821 void ASTStmtWriter::VisitOMPArrayShapingExpr(OMPArrayShapingExpr *E) {
822   VisitExpr(E);
823   Record.push_back(E->getDimensions().size());
824   Record.AddStmt(E->getBase());
825   for (Expr *Dim : E->getDimensions())
826     Record.AddStmt(Dim);
827   for (SourceRange SR : E->getBracketsRanges())
828     Record.AddSourceRange(SR);
829   Record.AddSourceLocation(E->getLParenLoc());
830   Record.AddSourceLocation(E->getRParenLoc());
831   Code = serialization::EXPR_OMP_ARRAY_SHAPING;
832 }
833 
834 void ASTStmtWriter::VisitOMPIteratorExpr(OMPIteratorExpr *E) {
835   VisitExpr(E);
836   Record.push_back(E->numOfIterators());
837   Record.AddSourceLocation(E->getIteratorKwLoc());
838   Record.AddSourceLocation(E->getLParenLoc());
839   Record.AddSourceLocation(E->getRParenLoc());
840   for (unsigned I = 0, End = E->numOfIterators(); I < End; ++I) {
841     Record.AddDeclRef(E->getIteratorDecl(I));
842     Record.AddSourceLocation(E->getAssignLoc(I));
843     OMPIteratorExpr::IteratorRange Range = E->getIteratorRange(I);
844     Record.AddStmt(Range.Begin);
845     Record.AddStmt(Range.End);
846     Record.AddStmt(Range.Step);
847     Record.AddSourceLocation(E->getColonLoc(I));
848     if (Range.Step)
849       Record.AddSourceLocation(E->getSecondColonLoc(I));
850     // Serialize helpers
851     OMPIteratorHelperData &HD = E->getHelper(I);
852     Record.AddDeclRef(HD.CounterVD);
853     Record.AddStmt(HD.Upper);
854     Record.AddStmt(HD.Update);
855     Record.AddStmt(HD.CounterUpdate);
856   }
857   Code = serialization::EXPR_OMP_ITERATOR;
858 }
859 
860 void ASTStmtWriter::VisitCallExpr(CallExpr *E) {
861   VisitExpr(E);
862   Record.push_back(E->getNumArgs());
863   Record.push_back(E->hasStoredFPFeatures());
864   Record.AddSourceLocation(E->getRParenLoc());
865   Record.AddStmt(E->getCallee());
866   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
867        Arg != ArgEnd; ++Arg)
868     Record.AddStmt(*Arg);
869   Record.push_back(static_cast<unsigned>(E->getADLCallKind()));
870   if (E->hasStoredFPFeatures())
871     Record.push_back(E->getFPFeatures().getAsOpaqueInt());
872   Code = serialization::EXPR_CALL;
873 }
874 
875 void ASTStmtWriter::VisitRecoveryExpr(RecoveryExpr *E) {
876   VisitExpr(E);
877   Record.push_back(std::distance(E->children().begin(), E->children().end()));
878   Record.AddSourceLocation(E->getBeginLoc());
879   Record.AddSourceLocation(E->getEndLoc());
880   for (Stmt *Child : E->children())
881     Record.AddStmt(Child);
882   Code = serialization::EXPR_RECOVERY;
883 }
884 
885 void ASTStmtWriter::VisitMemberExpr(MemberExpr *E) {
886   VisitExpr(E);
887 
888   bool HasQualifier = E->hasQualifier();
889   bool HasFoundDecl =
890       E->hasQualifierOrFoundDecl() &&
891       (E->getFoundDecl().getDecl() != E->getMemberDecl() ||
892        E->getFoundDecl().getAccess() != E->getMemberDecl()->getAccess());
893   bool HasTemplateInfo = E->hasTemplateKWAndArgsInfo();
894   unsigned NumTemplateArgs = E->getNumTemplateArgs();
895 
896   // Write these first for easy access when deserializing, as they affect the
897   // size of the MemberExpr.
898   Record.push_back(HasQualifier);
899   Record.push_back(HasFoundDecl);
900   Record.push_back(HasTemplateInfo);
901   Record.push_back(NumTemplateArgs);
902 
903   Record.AddStmt(E->getBase());
904   Record.AddDeclRef(E->getMemberDecl());
905   Record.AddDeclarationNameLoc(E->MemberDNLoc,
906                                E->getMemberDecl()->getDeclName());
907   Record.AddSourceLocation(E->getMemberLoc());
908   Record.push_back(E->isArrow());
909   Record.push_back(E->hadMultipleCandidates());
910   Record.push_back(E->isNonOdrUse());
911   Record.AddSourceLocation(E->getOperatorLoc());
912 
913   if (HasFoundDecl) {
914     DeclAccessPair FoundDecl = E->getFoundDecl();
915     Record.AddDeclRef(FoundDecl.getDecl());
916     Record.push_back(FoundDecl.getAccess());
917   }
918 
919   if (HasQualifier)
920     Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
921 
922   if (HasTemplateInfo)
923     AddTemplateKWAndArgsInfo(*E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
924                              E->getTrailingObjects<TemplateArgumentLoc>());
925 
926   Code = serialization::EXPR_MEMBER;
927 }
928 
929 void ASTStmtWriter::VisitObjCIsaExpr(ObjCIsaExpr *E) {
930   VisitExpr(E);
931   Record.AddStmt(E->getBase());
932   Record.AddSourceLocation(E->getIsaMemberLoc());
933   Record.AddSourceLocation(E->getOpLoc());
934   Record.push_back(E->isArrow());
935   Code = serialization::EXPR_OBJC_ISA;
936 }
937 
938 void ASTStmtWriter::
939 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
940   VisitExpr(E);
941   Record.AddStmt(E->getSubExpr());
942   Record.push_back(E->shouldCopy());
943   Code = serialization::EXPR_OBJC_INDIRECT_COPY_RESTORE;
944 }
945 
946 void ASTStmtWriter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
947   VisitExplicitCastExpr(E);
948   Record.AddSourceLocation(E->getLParenLoc());
949   Record.AddSourceLocation(E->getBridgeKeywordLoc());
950   Record.push_back(E->getBridgeKind()); // FIXME: Stable encoding
951   Code = serialization::EXPR_OBJC_BRIDGED_CAST;
952 }
953 
954 void ASTStmtWriter::VisitCastExpr(CastExpr *E) {
955   VisitExpr(E);
956   Record.push_back(E->path_size());
957   Record.push_back(E->hasStoredFPFeatures());
958   Record.AddStmt(E->getSubExpr());
959   Record.push_back(E->getCastKind()); // FIXME: stable encoding
960 
961   for (CastExpr::path_iterator
962          PI = E->path_begin(), PE = E->path_end(); PI != PE; ++PI)
963     Record.AddCXXBaseSpecifier(**PI);
964 
965   if (E->hasStoredFPFeatures())
966     Record.push_back(E->getFPFeatures().getAsOpaqueInt());
967 }
968 
969 void ASTStmtWriter::VisitBinaryOperator(BinaryOperator *E) {
970   VisitExpr(E);
971   bool HasFPFeatures = E->hasStoredFPFeatures();
972   // Write this first for easy access when deserializing, as they affect the
973   // size of the UnaryOperator.
974   Record.push_back(HasFPFeatures);
975   Record.push_back(E->getOpcode()); // FIXME: stable encoding
976   Record.AddStmt(E->getLHS());
977   Record.AddStmt(E->getRHS());
978   Record.AddSourceLocation(E->getOperatorLoc());
979   if (HasFPFeatures)
980     Record.push_back(E->getStoredFPFeatures().getAsOpaqueInt());
981   Code = serialization::EXPR_BINARY_OPERATOR;
982 }
983 
984 void ASTStmtWriter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
985   VisitBinaryOperator(E);
986   Record.AddTypeRef(E->getComputationLHSType());
987   Record.AddTypeRef(E->getComputationResultType());
988   Code = serialization::EXPR_COMPOUND_ASSIGN_OPERATOR;
989 }
990 
991 void ASTStmtWriter::VisitConditionalOperator(ConditionalOperator *E) {
992   VisitExpr(E);
993   Record.AddStmt(E->getCond());
994   Record.AddStmt(E->getLHS());
995   Record.AddStmt(E->getRHS());
996   Record.AddSourceLocation(E->getQuestionLoc());
997   Record.AddSourceLocation(E->getColonLoc());
998   Code = serialization::EXPR_CONDITIONAL_OPERATOR;
999 }
1000 
1001 void
1002 ASTStmtWriter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
1003   VisitExpr(E);
1004   Record.AddStmt(E->getOpaqueValue());
1005   Record.AddStmt(E->getCommon());
1006   Record.AddStmt(E->getCond());
1007   Record.AddStmt(E->getTrueExpr());
1008   Record.AddStmt(E->getFalseExpr());
1009   Record.AddSourceLocation(E->getQuestionLoc());
1010   Record.AddSourceLocation(E->getColonLoc());
1011   Code = serialization::EXPR_BINARY_CONDITIONAL_OPERATOR;
1012 }
1013 
1014 void ASTStmtWriter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
1015   VisitCastExpr(E);
1016   Record.push_back(E->isPartOfExplicitCast());
1017 
1018   if (E->path_size() == 0 && !E->hasStoredFPFeatures())
1019     AbbrevToUse = Writer.getExprImplicitCastAbbrev();
1020 
1021   Code = serialization::EXPR_IMPLICIT_CAST;
1022 }
1023 
1024 void ASTStmtWriter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
1025   VisitCastExpr(E);
1026   Record.AddTypeSourceInfo(E->getTypeInfoAsWritten());
1027 }
1028 
1029 void ASTStmtWriter::VisitCStyleCastExpr(CStyleCastExpr *E) {
1030   VisitExplicitCastExpr(E);
1031   Record.AddSourceLocation(E->getLParenLoc());
1032   Record.AddSourceLocation(E->getRParenLoc());
1033   Code = serialization::EXPR_CSTYLE_CAST;
1034 }
1035 
1036 void ASTStmtWriter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
1037   VisitExpr(E);
1038   Record.AddSourceLocation(E->getLParenLoc());
1039   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1040   Record.AddStmt(E->getInitializer());
1041   Record.push_back(E->isFileScope());
1042   Code = serialization::EXPR_COMPOUND_LITERAL;
1043 }
1044 
1045 void ASTStmtWriter::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
1046   VisitExpr(E);
1047   Record.AddStmt(E->getBase());
1048   Record.AddIdentifierRef(&E->getAccessor());
1049   Record.AddSourceLocation(E->getAccessorLoc());
1050   Code = serialization::EXPR_EXT_VECTOR_ELEMENT;
1051 }
1052 
1053 void ASTStmtWriter::VisitInitListExpr(InitListExpr *E) {
1054   VisitExpr(E);
1055   // NOTE: only add the (possibly null) syntactic form.
1056   // No need to serialize the isSemanticForm flag and the semantic form.
1057   Record.AddStmt(E->getSyntacticForm());
1058   Record.AddSourceLocation(E->getLBraceLoc());
1059   Record.AddSourceLocation(E->getRBraceLoc());
1060   bool isArrayFiller = E->ArrayFillerOrUnionFieldInit.is<Expr*>();
1061   Record.push_back(isArrayFiller);
1062   if (isArrayFiller)
1063     Record.AddStmt(E->getArrayFiller());
1064   else
1065     Record.AddDeclRef(E->getInitializedFieldInUnion());
1066   Record.push_back(E->hadArrayRangeDesignator());
1067   Record.push_back(E->getNumInits());
1068   if (isArrayFiller) {
1069     // ArrayFiller may have filled "holes" due to designated initializer.
1070     // Replace them by 0 to indicate that the filler goes in that place.
1071     Expr *filler = E->getArrayFiller();
1072     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
1073       Record.AddStmt(E->getInit(I) != filler ? E->getInit(I) : nullptr);
1074   } else {
1075     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
1076       Record.AddStmt(E->getInit(I));
1077   }
1078   Code = serialization::EXPR_INIT_LIST;
1079 }
1080 
1081 void ASTStmtWriter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
1082   VisitExpr(E);
1083   Record.push_back(E->getNumSubExprs());
1084   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1085     Record.AddStmt(E->getSubExpr(I));
1086   Record.AddSourceLocation(E->getEqualOrColonLoc());
1087   Record.push_back(E->usesGNUSyntax());
1088   for (const DesignatedInitExpr::Designator &D : E->designators()) {
1089     if (D.isFieldDesignator()) {
1090       if (FieldDecl *Field = D.getField()) {
1091         Record.push_back(serialization::DESIG_FIELD_DECL);
1092         Record.AddDeclRef(Field);
1093       } else {
1094         Record.push_back(serialization::DESIG_FIELD_NAME);
1095         Record.AddIdentifierRef(D.getFieldName());
1096       }
1097       Record.AddSourceLocation(D.getDotLoc());
1098       Record.AddSourceLocation(D.getFieldLoc());
1099     } else if (D.isArrayDesignator()) {
1100       Record.push_back(serialization::DESIG_ARRAY);
1101       Record.push_back(D.getFirstExprIndex());
1102       Record.AddSourceLocation(D.getLBracketLoc());
1103       Record.AddSourceLocation(D.getRBracketLoc());
1104     } else {
1105       assert(D.isArrayRangeDesignator() && "Unknown designator");
1106       Record.push_back(serialization::DESIG_ARRAY_RANGE);
1107       Record.push_back(D.getFirstExprIndex());
1108       Record.AddSourceLocation(D.getLBracketLoc());
1109       Record.AddSourceLocation(D.getEllipsisLoc());
1110       Record.AddSourceLocation(D.getRBracketLoc());
1111     }
1112   }
1113   Code = serialization::EXPR_DESIGNATED_INIT;
1114 }
1115 
1116 void ASTStmtWriter::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
1117   VisitExpr(E);
1118   Record.AddStmt(E->getBase());
1119   Record.AddStmt(E->getUpdater());
1120   Code = serialization::EXPR_DESIGNATED_INIT_UPDATE;
1121 }
1122 
1123 void ASTStmtWriter::VisitNoInitExpr(NoInitExpr *E) {
1124   VisitExpr(E);
1125   Code = serialization::EXPR_NO_INIT;
1126 }
1127 
1128 void ASTStmtWriter::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
1129   VisitExpr(E);
1130   Record.AddStmt(E->SubExprs[0]);
1131   Record.AddStmt(E->SubExprs[1]);
1132   Code = serialization::EXPR_ARRAY_INIT_LOOP;
1133 }
1134 
1135 void ASTStmtWriter::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
1136   VisitExpr(E);
1137   Code = serialization::EXPR_ARRAY_INIT_INDEX;
1138 }
1139 
1140 void ASTStmtWriter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
1141   VisitExpr(E);
1142   Code = serialization::EXPR_IMPLICIT_VALUE_INIT;
1143 }
1144 
1145 void ASTStmtWriter::VisitVAArgExpr(VAArgExpr *E) {
1146   VisitExpr(E);
1147   Record.AddStmt(E->getSubExpr());
1148   Record.AddTypeSourceInfo(E->getWrittenTypeInfo());
1149   Record.AddSourceLocation(E->getBuiltinLoc());
1150   Record.AddSourceLocation(E->getRParenLoc());
1151   Record.push_back(E->isMicrosoftABI());
1152   Code = serialization::EXPR_VA_ARG;
1153 }
1154 
1155 void ASTStmtWriter::VisitSourceLocExpr(SourceLocExpr *E) {
1156   VisitExpr(E);
1157   Record.AddDeclRef(cast_or_null<Decl>(E->getParentContext()));
1158   Record.AddSourceLocation(E->getBeginLoc());
1159   Record.AddSourceLocation(E->getEndLoc());
1160   Record.push_back(E->getIdentKind());
1161   Code = serialization::EXPR_SOURCE_LOC;
1162 }
1163 
1164 void ASTStmtWriter::VisitAddrLabelExpr(AddrLabelExpr *E) {
1165   VisitExpr(E);
1166   Record.AddSourceLocation(E->getAmpAmpLoc());
1167   Record.AddSourceLocation(E->getLabelLoc());
1168   Record.AddDeclRef(E->getLabel());
1169   Code = serialization::EXPR_ADDR_LABEL;
1170 }
1171 
1172 void ASTStmtWriter::VisitStmtExpr(StmtExpr *E) {
1173   VisitExpr(E);
1174   Record.AddStmt(E->getSubStmt());
1175   Record.AddSourceLocation(E->getLParenLoc());
1176   Record.AddSourceLocation(E->getRParenLoc());
1177   Record.push_back(E->getTemplateDepth());
1178   Code = serialization::EXPR_STMT;
1179 }
1180 
1181 void ASTStmtWriter::VisitChooseExpr(ChooseExpr *E) {
1182   VisitExpr(E);
1183   Record.AddStmt(E->getCond());
1184   Record.AddStmt(E->getLHS());
1185   Record.AddStmt(E->getRHS());
1186   Record.AddSourceLocation(E->getBuiltinLoc());
1187   Record.AddSourceLocation(E->getRParenLoc());
1188   Record.push_back(E->isConditionDependent() ? false : E->isConditionTrue());
1189   Code = serialization::EXPR_CHOOSE;
1190 }
1191 
1192 void ASTStmtWriter::VisitGNUNullExpr(GNUNullExpr *E) {
1193   VisitExpr(E);
1194   Record.AddSourceLocation(E->getTokenLocation());
1195   Code = serialization::EXPR_GNU_NULL;
1196 }
1197 
1198 void ASTStmtWriter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
1199   VisitExpr(E);
1200   Record.push_back(E->getNumSubExprs());
1201   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1202     Record.AddStmt(E->getExpr(I));
1203   Record.AddSourceLocation(E->getBuiltinLoc());
1204   Record.AddSourceLocation(E->getRParenLoc());
1205   Code = serialization::EXPR_SHUFFLE_VECTOR;
1206 }
1207 
1208 void ASTStmtWriter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
1209   VisitExpr(E);
1210   Record.AddSourceLocation(E->getBuiltinLoc());
1211   Record.AddSourceLocation(E->getRParenLoc());
1212   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1213   Record.AddStmt(E->getSrcExpr());
1214   Code = serialization::EXPR_CONVERT_VECTOR;
1215 }
1216 
1217 void ASTStmtWriter::VisitBlockExpr(BlockExpr *E) {
1218   VisitExpr(E);
1219   Record.AddDeclRef(E->getBlockDecl());
1220   Code = serialization::EXPR_BLOCK;
1221 }
1222 
1223 void ASTStmtWriter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
1224   VisitExpr(E);
1225 
1226   Record.push_back(E->getNumAssocs());
1227   Record.push_back(E->ResultIndex);
1228   Record.AddSourceLocation(E->getGenericLoc());
1229   Record.AddSourceLocation(E->getDefaultLoc());
1230   Record.AddSourceLocation(E->getRParenLoc());
1231 
1232   Stmt **Stmts = E->getTrailingObjects<Stmt *>();
1233   // Add 1 to account for the controlling expression which is the first
1234   // expression in the trailing array of Stmt *. This is not needed for
1235   // the trailing array of TypeSourceInfo *.
1236   for (unsigned I = 0, N = E->getNumAssocs() + 1; I < N; ++I)
1237     Record.AddStmt(Stmts[I]);
1238 
1239   TypeSourceInfo **TSIs = E->getTrailingObjects<TypeSourceInfo *>();
1240   for (unsigned I = 0, N = E->getNumAssocs(); I < N; ++I)
1241     Record.AddTypeSourceInfo(TSIs[I]);
1242 
1243   Code = serialization::EXPR_GENERIC_SELECTION;
1244 }
1245 
1246 void ASTStmtWriter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
1247   VisitExpr(E);
1248   Record.push_back(E->getNumSemanticExprs());
1249 
1250   // Push the result index.  Currently, this needs to exactly match
1251   // the encoding used internally for ResultIndex.
1252   unsigned result = E->getResultExprIndex();
1253   result = (result == PseudoObjectExpr::NoResult ? 0 : result + 1);
1254   Record.push_back(result);
1255 
1256   Record.AddStmt(E->getSyntacticForm());
1257   for (PseudoObjectExpr::semantics_iterator
1258          i = E->semantics_begin(), e = E->semantics_end(); i != e; ++i) {
1259     Record.AddStmt(*i);
1260   }
1261   Code = serialization::EXPR_PSEUDO_OBJECT;
1262 }
1263 
1264 void ASTStmtWriter::VisitAtomicExpr(AtomicExpr *E) {
1265   VisitExpr(E);
1266   Record.push_back(E->getOp());
1267   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1268     Record.AddStmt(E->getSubExprs()[I]);
1269   Record.AddSourceLocation(E->getBuiltinLoc());
1270   Record.AddSourceLocation(E->getRParenLoc());
1271   Code = serialization::EXPR_ATOMIC;
1272 }
1273 
1274 //===----------------------------------------------------------------------===//
1275 // Objective-C Expressions and Statements.
1276 //===----------------------------------------------------------------------===//
1277 
1278 void ASTStmtWriter::VisitObjCStringLiteral(ObjCStringLiteral *E) {
1279   VisitExpr(E);
1280   Record.AddStmt(E->getString());
1281   Record.AddSourceLocation(E->getAtLoc());
1282   Code = serialization::EXPR_OBJC_STRING_LITERAL;
1283 }
1284 
1285 void ASTStmtWriter::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1286   VisitExpr(E);
1287   Record.AddStmt(E->getSubExpr());
1288   Record.AddDeclRef(E->getBoxingMethod());
1289   Record.AddSourceRange(E->getSourceRange());
1290   Code = serialization::EXPR_OBJC_BOXED_EXPRESSION;
1291 }
1292 
1293 void ASTStmtWriter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1294   VisitExpr(E);
1295   Record.push_back(E->getNumElements());
1296   for (unsigned i = 0; i < E->getNumElements(); i++)
1297     Record.AddStmt(E->getElement(i));
1298   Record.AddDeclRef(E->getArrayWithObjectsMethod());
1299   Record.AddSourceRange(E->getSourceRange());
1300   Code = serialization::EXPR_OBJC_ARRAY_LITERAL;
1301 }
1302 
1303 void ASTStmtWriter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1304   VisitExpr(E);
1305   Record.push_back(E->getNumElements());
1306   Record.push_back(E->HasPackExpansions);
1307   for (unsigned i = 0; i < E->getNumElements(); i++) {
1308     ObjCDictionaryElement Element = E->getKeyValueElement(i);
1309     Record.AddStmt(Element.Key);
1310     Record.AddStmt(Element.Value);
1311     if (E->HasPackExpansions) {
1312       Record.AddSourceLocation(Element.EllipsisLoc);
1313       unsigned NumExpansions = 0;
1314       if (Element.NumExpansions)
1315         NumExpansions = *Element.NumExpansions + 1;
1316       Record.push_back(NumExpansions);
1317     }
1318   }
1319 
1320   Record.AddDeclRef(E->getDictWithObjectsMethod());
1321   Record.AddSourceRange(E->getSourceRange());
1322   Code = serialization::EXPR_OBJC_DICTIONARY_LITERAL;
1323 }
1324 
1325 void ASTStmtWriter::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
1326   VisitExpr(E);
1327   Record.AddTypeSourceInfo(E->getEncodedTypeSourceInfo());
1328   Record.AddSourceLocation(E->getAtLoc());
1329   Record.AddSourceLocation(E->getRParenLoc());
1330   Code = serialization::EXPR_OBJC_ENCODE;
1331 }
1332 
1333 void ASTStmtWriter::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
1334   VisitExpr(E);
1335   Record.AddSelectorRef(E->getSelector());
1336   Record.AddSourceLocation(E->getAtLoc());
1337   Record.AddSourceLocation(E->getRParenLoc());
1338   Code = serialization::EXPR_OBJC_SELECTOR_EXPR;
1339 }
1340 
1341 void ASTStmtWriter::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
1342   VisitExpr(E);
1343   Record.AddDeclRef(E->getProtocol());
1344   Record.AddSourceLocation(E->getAtLoc());
1345   Record.AddSourceLocation(E->ProtoLoc);
1346   Record.AddSourceLocation(E->getRParenLoc());
1347   Code = serialization::EXPR_OBJC_PROTOCOL_EXPR;
1348 }
1349 
1350 void ASTStmtWriter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
1351   VisitExpr(E);
1352   Record.AddDeclRef(E->getDecl());
1353   Record.AddSourceLocation(E->getLocation());
1354   Record.AddSourceLocation(E->getOpLoc());
1355   Record.AddStmt(E->getBase());
1356   Record.push_back(E->isArrow());
1357   Record.push_back(E->isFreeIvar());
1358   Code = serialization::EXPR_OBJC_IVAR_REF_EXPR;
1359 }
1360 
1361 void ASTStmtWriter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
1362   VisitExpr(E);
1363   Record.push_back(E->SetterAndMethodRefFlags.getInt());
1364   Record.push_back(E->isImplicitProperty());
1365   if (E->isImplicitProperty()) {
1366     Record.AddDeclRef(E->getImplicitPropertyGetter());
1367     Record.AddDeclRef(E->getImplicitPropertySetter());
1368   } else {
1369     Record.AddDeclRef(E->getExplicitProperty());
1370   }
1371   Record.AddSourceLocation(E->getLocation());
1372   Record.AddSourceLocation(E->getReceiverLocation());
1373   if (E->isObjectReceiver()) {
1374     Record.push_back(0);
1375     Record.AddStmt(E->getBase());
1376   } else if (E->isSuperReceiver()) {
1377     Record.push_back(1);
1378     Record.AddTypeRef(E->getSuperReceiverType());
1379   } else {
1380     Record.push_back(2);
1381     Record.AddDeclRef(E->getClassReceiver());
1382   }
1383 
1384   Code = serialization::EXPR_OBJC_PROPERTY_REF_EXPR;
1385 }
1386 
1387 void ASTStmtWriter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
1388   VisitExpr(E);
1389   Record.AddSourceLocation(E->getRBracket());
1390   Record.AddStmt(E->getBaseExpr());
1391   Record.AddStmt(E->getKeyExpr());
1392   Record.AddDeclRef(E->getAtIndexMethodDecl());
1393   Record.AddDeclRef(E->setAtIndexMethodDecl());
1394 
1395   Code = serialization::EXPR_OBJC_SUBSCRIPT_REF_EXPR;
1396 }
1397 
1398 void ASTStmtWriter::VisitObjCMessageExpr(ObjCMessageExpr *E) {
1399   VisitExpr(E);
1400   Record.push_back(E->getNumArgs());
1401   Record.push_back(E->getNumStoredSelLocs());
1402   Record.push_back(E->SelLocsKind);
1403   Record.push_back(E->isDelegateInitCall());
1404   Record.push_back(E->IsImplicit);
1405   Record.push_back((unsigned)E->getReceiverKind()); // FIXME: stable encoding
1406   switch (E->getReceiverKind()) {
1407   case ObjCMessageExpr::Instance:
1408     Record.AddStmt(E->getInstanceReceiver());
1409     break;
1410 
1411   case ObjCMessageExpr::Class:
1412     Record.AddTypeSourceInfo(E->getClassReceiverTypeInfo());
1413     break;
1414 
1415   case ObjCMessageExpr::SuperClass:
1416   case ObjCMessageExpr::SuperInstance:
1417     Record.AddTypeRef(E->getSuperType());
1418     Record.AddSourceLocation(E->getSuperLoc());
1419     break;
1420   }
1421 
1422   if (E->getMethodDecl()) {
1423     Record.push_back(1);
1424     Record.AddDeclRef(E->getMethodDecl());
1425   } else {
1426     Record.push_back(0);
1427     Record.AddSelectorRef(E->getSelector());
1428   }
1429 
1430   Record.AddSourceLocation(E->getLeftLoc());
1431   Record.AddSourceLocation(E->getRightLoc());
1432 
1433   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
1434        Arg != ArgEnd; ++Arg)
1435     Record.AddStmt(*Arg);
1436 
1437   SourceLocation *Locs = E->getStoredSelLocs();
1438   for (unsigned i = 0, e = E->getNumStoredSelLocs(); i != e; ++i)
1439     Record.AddSourceLocation(Locs[i]);
1440 
1441   Code = serialization::EXPR_OBJC_MESSAGE_EXPR;
1442 }
1443 
1444 void ASTStmtWriter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
1445   VisitStmt(S);
1446   Record.AddStmt(S->getElement());
1447   Record.AddStmt(S->getCollection());
1448   Record.AddStmt(S->getBody());
1449   Record.AddSourceLocation(S->getForLoc());
1450   Record.AddSourceLocation(S->getRParenLoc());
1451   Code = serialization::STMT_OBJC_FOR_COLLECTION;
1452 }
1453 
1454 void ASTStmtWriter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
1455   VisitStmt(S);
1456   Record.AddStmt(S->getCatchBody());
1457   Record.AddDeclRef(S->getCatchParamDecl());
1458   Record.AddSourceLocation(S->getAtCatchLoc());
1459   Record.AddSourceLocation(S->getRParenLoc());
1460   Code = serialization::STMT_OBJC_CATCH;
1461 }
1462 
1463 void ASTStmtWriter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
1464   VisitStmt(S);
1465   Record.AddStmt(S->getFinallyBody());
1466   Record.AddSourceLocation(S->getAtFinallyLoc());
1467   Code = serialization::STMT_OBJC_FINALLY;
1468 }
1469 
1470 void ASTStmtWriter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
1471   VisitStmt(S); // FIXME: no test coverage.
1472   Record.AddStmt(S->getSubStmt());
1473   Record.AddSourceLocation(S->getAtLoc());
1474   Code = serialization::STMT_OBJC_AUTORELEASE_POOL;
1475 }
1476 
1477 void ASTStmtWriter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
1478   VisitStmt(S);
1479   Record.push_back(S->getNumCatchStmts());
1480   Record.push_back(S->getFinallyStmt() != nullptr);
1481   Record.AddStmt(S->getTryBody());
1482   for (ObjCAtCatchStmt *C : S->catch_stmts())
1483     Record.AddStmt(C);
1484   if (S->getFinallyStmt())
1485     Record.AddStmt(S->getFinallyStmt());
1486   Record.AddSourceLocation(S->getAtTryLoc());
1487   Code = serialization::STMT_OBJC_AT_TRY;
1488 }
1489 
1490 void ASTStmtWriter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
1491   VisitStmt(S); // FIXME: no test coverage.
1492   Record.AddStmt(S->getSynchExpr());
1493   Record.AddStmt(S->getSynchBody());
1494   Record.AddSourceLocation(S->getAtSynchronizedLoc());
1495   Code = serialization::STMT_OBJC_AT_SYNCHRONIZED;
1496 }
1497 
1498 void ASTStmtWriter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
1499   VisitStmt(S); // FIXME: no test coverage.
1500   Record.AddStmt(S->getThrowExpr());
1501   Record.AddSourceLocation(S->getThrowLoc());
1502   Code = serialization::STMT_OBJC_AT_THROW;
1503 }
1504 
1505 void ASTStmtWriter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
1506   VisitExpr(E);
1507   Record.push_back(E->getValue());
1508   Record.AddSourceLocation(E->getLocation());
1509   Code = serialization::EXPR_OBJC_BOOL_LITERAL;
1510 }
1511 
1512 void ASTStmtWriter::VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
1513   VisitExpr(E);
1514   Record.AddSourceRange(E->getSourceRange());
1515   Record.AddVersionTuple(E->getVersion());
1516   Code = serialization::EXPR_OBJC_AVAILABILITY_CHECK;
1517 }
1518 
1519 //===----------------------------------------------------------------------===//
1520 // C++ Expressions and Statements.
1521 //===----------------------------------------------------------------------===//
1522 
1523 void ASTStmtWriter::VisitCXXCatchStmt(CXXCatchStmt *S) {
1524   VisitStmt(S);
1525   Record.AddSourceLocation(S->getCatchLoc());
1526   Record.AddDeclRef(S->getExceptionDecl());
1527   Record.AddStmt(S->getHandlerBlock());
1528   Code = serialization::STMT_CXX_CATCH;
1529 }
1530 
1531 void ASTStmtWriter::VisitCXXTryStmt(CXXTryStmt *S) {
1532   VisitStmt(S);
1533   Record.push_back(S->getNumHandlers());
1534   Record.AddSourceLocation(S->getTryLoc());
1535   Record.AddStmt(S->getTryBlock());
1536   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1537     Record.AddStmt(S->getHandler(i));
1538   Code = serialization::STMT_CXX_TRY;
1539 }
1540 
1541 void ASTStmtWriter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1542   VisitStmt(S);
1543   Record.AddSourceLocation(S->getForLoc());
1544   Record.AddSourceLocation(S->getCoawaitLoc());
1545   Record.AddSourceLocation(S->getColonLoc());
1546   Record.AddSourceLocation(S->getRParenLoc());
1547   Record.AddStmt(S->getInit());
1548   Record.AddStmt(S->getRangeStmt());
1549   Record.AddStmt(S->getBeginStmt());
1550   Record.AddStmt(S->getEndStmt());
1551   Record.AddStmt(S->getCond());
1552   Record.AddStmt(S->getInc());
1553   Record.AddStmt(S->getLoopVarStmt());
1554   Record.AddStmt(S->getBody());
1555   Code = serialization::STMT_CXX_FOR_RANGE;
1556 }
1557 
1558 void ASTStmtWriter::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1559   VisitStmt(S);
1560   Record.AddSourceLocation(S->getKeywordLoc());
1561   Record.push_back(S->isIfExists());
1562   Record.AddNestedNameSpecifierLoc(S->getQualifierLoc());
1563   Record.AddDeclarationNameInfo(S->getNameInfo());
1564   Record.AddStmt(S->getSubStmt());
1565   Code = serialization::STMT_MS_DEPENDENT_EXISTS;
1566 }
1567 
1568 void ASTStmtWriter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1569   VisitCallExpr(E);
1570   Record.push_back(E->getOperator());
1571   Record.AddSourceRange(E->Range);
1572   Code = serialization::EXPR_CXX_OPERATOR_CALL;
1573 }
1574 
1575 void ASTStmtWriter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
1576   VisitCallExpr(E);
1577   Code = serialization::EXPR_CXX_MEMBER_CALL;
1578 }
1579 
1580 void ASTStmtWriter::VisitCXXRewrittenBinaryOperator(
1581     CXXRewrittenBinaryOperator *E) {
1582   VisitExpr(E);
1583   Record.push_back(E->isReversed());
1584   Record.AddStmt(E->getSemanticForm());
1585   Code = serialization::EXPR_CXX_REWRITTEN_BINARY_OPERATOR;
1586 }
1587 
1588 void ASTStmtWriter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1589   VisitExpr(E);
1590 
1591   Record.push_back(E->getNumArgs());
1592   Record.push_back(E->isElidable());
1593   Record.push_back(E->hadMultipleCandidates());
1594   Record.push_back(E->isListInitialization());
1595   Record.push_back(E->isStdInitListInitialization());
1596   Record.push_back(E->requiresZeroInitialization());
1597   Record.push_back(E->getConstructionKind()); // FIXME: stable encoding
1598   Record.AddSourceLocation(E->getLocation());
1599   Record.AddDeclRef(E->getConstructor());
1600   Record.AddSourceRange(E->getParenOrBraceRange());
1601 
1602   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1603     Record.AddStmt(E->getArg(I));
1604 
1605   Code = serialization::EXPR_CXX_CONSTRUCT;
1606 }
1607 
1608 void ASTStmtWriter::VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E) {
1609   VisitExpr(E);
1610   Record.AddDeclRef(E->getConstructor());
1611   Record.AddSourceLocation(E->getLocation());
1612   Record.push_back(E->constructsVBase());
1613   Record.push_back(E->inheritedFromVBase());
1614   Code = serialization::EXPR_CXX_INHERITED_CTOR_INIT;
1615 }
1616 
1617 void ASTStmtWriter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1618   VisitCXXConstructExpr(E);
1619   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1620   Code = serialization::EXPR_CXX_TEMPORARY_OBJECT;
1621 }
1622 
1623 void ASTStmtWriter::VisitLambdaExpr(LambdaExpr *E) {
1624   VisitExpr(E);
1625   Record.push_back(E->LambdaExprBits.NumCaptures);
1626   Record.AddSourceRange(E->IntroducerRange);
1627   Record.push_back(E->LambdaExprBits.CaptureDefault); // FIXME: stable encoding
1628   Record.AddSourceLocation(E->CaptureDefaultLoc);
1629   Record.push_back(E->LambdaExprBits.ExplicitParams);
1630   Record.push_back(E->LambdaExprBits.ExplicitResultType);
1631   Record.AddSourceLocation(E->ClosingBrace);
1632 
1633   // Add capture initializers.
1634   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1635                                       CEnd = E->capture_init_end();
1636        C != CEnd; ++C) {
1637     Record.AddStmt(*C);
1638   }
1639 
1640   // Don't serialize the body. It belongs to the call operator declaration.
1641   // LambdaExpr only stores a copy of the Stmt *.
1642 
1643   Code = serialization::EXPR_LAMBDA;
1644 }
1645 
1646 void ASTStmtWriter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
1647   VisitExpr(E);
1648   Record.AddStmt(E->getSubExpr());
1649   Code = serialization::EXPR_CXX_STD_INITIALIZER_LIST;
1650 }
1651 
1652 void ASTStmtWriter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1653   VisitExplicitCastExpr(E);
1654   Record.AddSourceRange(SourceRange(E->getOperatorLoc(), E->getRParenLoc()));
1655   Record.AddSourceRange(E->getAngleBrackets());
1656 }
1657 
1658 void ASTStmtWriter::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1659   VisitCXXNamedCastExpr(E);
1660   Code = serialization::EXPR_CXX_STATIC_CAST;
1661 }
1662 
1663 void ASTStmtWriter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1664   VisitCXXNamedCastExpr(E);
1665   Code = serialization::EXPR_CXX_DYNAMIC_CAST;
1666 }
1667 
1668 void ASTStmtWriter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1669   VisitCXXNamedCastExpr(E);
1670   Code = serialization::EXPR_CXX_REINTERPRET_CAST;
1671 }
1672 
1673 void ASTStmtWriter::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1674   VisitCXXNamedCastExpr(E);
1675   Code = serialization::EXPR_CXX_CONST_CAST;
1676 }
1677 
1678 void ASTStmtWriter::VisitCXXAddrspaceCastExpr(CXXAddrspaceCastExpr *E) {
1679   VisitCXXNamedCastExpr(E);
1680   Code = serialization::EXPR_CXX_ADDRSPACE_CAST;
1681 }
1682 
1683 void ASTStmtWriter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1684   VisitExplicitCastExpr(E);
1685   Record.AddSourceLocation(E->getLParenLoc());
1686   Record.AddSourceLocation(E->getRParenLoc());
1687   Code = serialization::EXPR_CXX_FUNCTIONAL_CAST;
1688 }
1689 
1690 void ASTStmtWriter::VisitBuiltinBitCastExpr(BuiltinBitCastExpr *E) {
1691   VisitExplicitCastExpr(E);
1692   Record.AddSourceLocation(E->getBeginLoc());
1693   Record.AddSourceLocation(E->getEndLoc());
1694   Code = serialization::EXPR_BUILTIN_BIT_CAST;
1695 }
1696 
1697 void ASTStmtWriter::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1698   VisitCallExpr(E);
1699   Record.AddSourceLocation(E->UDSuffixLoc);
1700   Code = serialization::EXPR_USER_DEFINED_LITERAL;
1701 }
1702 
1703 void ASTStmtWriter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1704   VisitExpr(E);
1705   Record.push_back(E->getValue());
1706   Record.AddSourceLocation(E->getLocation());
1707   Code = serialization::EXPR_CXX_BOOL_LITERAL;
1708 }
1709 
1710 void ASTStmtWriter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1711   VisitExpr(E);
1712   Record.AddSourceLocation(E->getLocation());
1713   Code = serialization::EXPR_CXX_NULL_PTR_LITERAL;
1714 }
1715 
1716 void ASTStmtWriter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1717   VisitExpr(E);
1718   Record.AddSourceRange(E->getSourceRange());
1719   if (E->isTypeOperand()) {
1720     Record.AddTypeSourceInfo(E->getTypeOperandSourceInfo());
1721     Code = serialization::EXPR_CXX_TYPEID_TYPE;
1722   } else {
1723     Record.AddStmt(E->getExprOperand());
1724     Code = serialization::EXPR_CXX_TYPEID_EXPR;
1725   }
1726 }
1727 
1728 void ASTStmtWriter::VisitCXXThisExpr(CXXThisExpr *E) {
1729   VisitExpr(E);
1730   Record.AddSourceLocation(E->getLocation());
1731   Record.push_back(E->isImplicit());
1732   Code = serialization::EXPR_CXX_THIS;
1733 }
1734 
1735 void ASTStmtWriter::VisitCXXThrowExpr(CXXThrowExpr *E) {
1736   VisitExpr(E);
1737   Record.AddSourceLocation(E->getThrowLoc());
1738   Record.AddStmt(E->getSubExpr());
1739   Record.push_back(E->isThrownVariableInScope());
1740   Code = serialization::EXPR_CXX_THROW;
1741 }
1742 
1743 void ASTStmtWriter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1744   VisitExpr(E);
1745   Record.AddDeclRef(E->getParam());
1746   Record.AddDeclRef(cast_or_null<Decl>(E->getUsedContext()));
1747   Record.AddSourceLocation(E->getUsedLocation());
1748   Record.push_back(E->hasRewrittenInit());
1749   if (E->hasRewrittenInit())
1750     Record.AddStmt(E->getRewrittenExpr());
1751   Code = serialization::EXPR_CXX_DEFAULT_ARG;
1752 }
1753 
1754 void ASTStmtWriter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
1755   VisitExpr(E);
1756   Record.push_back(E->hasRewrittenInit());
1757   Record.AddDeclRef(E->getField());
1758   Record.AddDeclRef(cast_or_null<Decl>(E->getUsedContext()));
1759   Record.AddSourceLocation(E->getExprLoc());
1760   if (E->hasRewrittenInit())
1761     Record.AddStmt(E->getRewrittenExpr());
1762   Code = serialization::EXPR_CXX_DEFAULT_INIT;
1763 }
1764 
1765 void ASTStmtWriter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1766   VisitExpr(E);
1767   Record.AddCXXTemporary(E->getTemporary());
1768   Record.AddStmt(E->getSubExpr());
1769   Code = serialization::EXPR_CXX_BIND_TEMPORARY;
1770 }
1771 
1772 void ASTStmtWriter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1773   VisitExpr(E);
1774   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1775   Record.AddSourceLocation(E->getRParenLoc());
1776   Code = serialization::EXPR_CXX_SCALAR_VALUE_INIT;
1777 }
1778 
1779 void ASTStmtWriter::VisitCXXNewExpr(CXXNewExpr *E) {
1780   VisitExpr(E);
1781 
1782   Record.push_back(E->isArray());
1783   Record.push_back(E->hasInitializer());
1784   Record.push_back(E->getNumPlacementArgs());
1785   Record.push_back(E->isParenTypeId());
1786 
1787   Record.push_back(E->isGlobalNew());
1788   Record.push_back(E->passAlignment());
1789   Record.push_back(E->doesUsualArrayDeleteWantSize());
1790   Record.push_back(E->CXXNewExprBits.StoredInitializationStyle);
1791 
1792   Record.AddDeclRef(E->getOperatorNew());
1793   Record.AddDeclRef(E->getOperatorDelete());
1794   Record.AddTypeSourceInfo(E->getAllocatedTypeSourceInfo());
1795   if (E->isParenTypeId())
1796     Record.AddSourceRange(E->getTypeIdParens());
1797   Record.AddSourceRange(E->getSourceRange());
1798   Record.AddSourceRange(E->getDirectInitRange());
1799 
1800   for (CXXNewExpr::arg_iterator I = E->raw_arg_begin(), N = E->raw_arg_end();
1801        I != N; ++I)
1802     Record.AddStmt(*I);
1803 
1804   Code = serialization::EXPR_CXX_NEW;
1805 }
1806 
1807 void ASTStmtWriter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1808   VisitExpr(E);
1809   Record.push_back(E->isGlobalDelete());
1810   Record.push_back(E->isArrayForm());
1811   Record.push_back(E->isArrayFormAsWritten());
1812   Record.push_back(E->doesUsualArrayDeleteWantSize());
1813   Record.AddDeclRef(E->getOperatorDelete());
1814   Record.AddStmt(E->getArgument());
1815   Record.AddSourceLocation(E->getBeginLoc());
1816 
1817   Code = serialization::EXPR_CXX_DELETE;
1818 }
1819 
1820 void ASTStmtWriter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1821   VisitExpr(E);
1822 
1823   Record.AddStmt(E->getBase());
1824   Record.push_back(E->isArrow());
1825   Record.AddSourceLocation(E->getOperatorLoc());
1826   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1827   Record.AddTypeSourceInfo(E->getScopeTypeInfo());
1828   Record.AddSourceLocation(E->getColonColonLoc());
1829   Record.AddSourceLocation(E->getTildeLoc());
1830 
1831   // PseudoDestructorTypeStorage.
1832   Record.AddIdentifierRef(E->getDestroyedTypeIdentifier());
1833   if (E->getDestroyedTypeIdentifier())
1834     Record.AddSourceLocation(E->getDestroyedTypeLoc());
1835   else
1836     Record.AddTypeSourceInfo(E->getDestroyedTypeInfo());
1837 
1838   Code = serialization::EXPR_CXX_PSEUDO_DESTRUCTOR;
1839 }
1840 
1841 void ASTStmtWriter::VisitExprWithCleanups(ExprWithCleanups *E) {
1842   VisitExpr(E);
1843   Record.push_back(E->getNumObjects());
1844   for (auto &Obj : E->getObjects()) {
1845     if (auto *BD = Obj.dyn_cast<BlockDecl *>()) {
1846       Record.push_back(serialization::COK_Block);
1847       Record.AddDeclRef(BD);
1848     } else if (auto *CLE = Obj.dyn_cast<CompoundLiteralExpr *>()) {
1849       Record.push_back(serialization::COK_CompoundLiteral);
1850       Record.AddStmt(CLE);
1851     }
1852   }
1853 
1854   Record.push_back(E->cleanupsHaveSideEffects());
1855   Record.AddStmt(E->getSubExpr());
1856   Code = serialization::EXPR_EXPR_WITH_CLEANUPS;
1857 }
1858 
1859 void ASTStmtWriter::VisitCXXDependentScopeMemberExpr(
1860     CXXDependentScopeMemberExpr *E) {
1861   VisitExpr(E);
1862 
1863   // Don't emit anything here (or if you do you will have to update
1864   // the corresponding deserialization function).
1865 
1866   Record.push_back(E->hasTemplateKWAndArgsInfo());
1867   Record.push_back(E->getNumTemplateArgs());
1868   Record.push_back(E->hasFirstQualifierFoundInScope());
1869 
1870   if (E->hasTemplateKWAndArgsInfo()) {
1871     const ASTTemplateKWAndArgsInfo &ArgInfo =
1872         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>();
1873     AddTemplateKWAndArgsInfo(ArgInfo,
1874                              E->getTrailingObjects<TemplateArgumentLoc>());
1875   }
1876 
1877   Record.push_back(E->isArrow());
1878   Record.AddSourceLocation(E->getOperatorLoc());
1879   Record.AddTypeRef(E->getBaseType());
1880   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1881   if (!E->isImplicitAccess())
1882     Record.AddStmt(E->getBase());
1883   else
1884     Record.AddStmt(nullptr);
1885 
1886   if (E->hasFirstQualifierFoundInScope())
1887     Record.AddDeclRef(E->getFirstQualifierFoundInScope());
1888 
1889   Record.AddDeclarationNameInfo(E->MemberNameInfo);
1890   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_MEMBER;
1891 }
1892 
1893 void
1894 ASTStmtWriter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1895   VisitExpr(E);
1896 
1897   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
1898   // emitted first.
1899 
1900   Record.push_back(E->DependentScopeDeclRefExprBits.HasTemplateKWAndArgsInfo);
1901   if (E->DependentScopeDeclRefExprBits.HasTemplateKWAndArgsInfo) {
1902     const ASTTemplateKWAndArgsInfo &ArgInfo =
1903         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>();
1904     Record.push_back(ArgInfo.NumTemplateArgs);
1905     AddTemplateKWAndArgsInfo(ArgInfo,
1906                              E->getTrailingObjects<TemplateArgumentLoc>());
1907   }
1908 
1909   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1910   Record.AddDeclarationNameInfo(E->NameInfo);
1911   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_DECL_REF;
1912 }
1913 
1914 void
1915 ASTStmtWriter::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1916   VisitExpr(E);
1917   Record.push_back(E->getNumArgs());
1918   for (CXXUnresolvedConstructExpr::arg_iterator
1919          ArgI = E->arg_begin(), ArgE = E->arg_end(); ArgI != ArgE; ++ArgI)
1920     Record.AddStmt(*ArgI);
1921   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1922   Record.AddSourceLocation(E->getLParenLoc());
1923   Record.AddSourceLocation(E->getRParenLoc());
1924   Code = serialization::EXPR_CXX_UNRESOLVED_CONSTRUCT;
1925 }
1926 
1927 void ASTStmtWriter::VisitOverloadExpr(OverloadExpr *E) {
1928   VisitExpr(E);
1929 
1930   Record.push_back(E->getNumDecls());
1931   Record.push_back(E->hasTemplateKWAndArgsInfo());
1932   if (E->hasTemplateKWAndArgsInfo()) {
1933     const ASTTemplateKWAndArgsInfo &ArgInfo =
1934         *E->getTrailingASTTemplateKWAndArgsInfo();
1935     Record.push_back(ArgInfo.NumTemplateArgs);
1936     AddTemplateKWAndArgsInfo(ArgInfo, E->getTrailingTemplateArgumentLoc());
1937   }
1938 
1939   for (OverloadExpr::decls_iterator OvI = E->decls_begin(),
1940                                     OvE = E->decls_end();
1941        OvI != OvE; ++OvI) {
1942     Record.AddDeclRef(OvI.getDecl());
1943     Record.push_back(OvI.getAccess());
1944   }
1945 
1946   Record.AddDeclarationNameInfo(E->getNameInfo());
1947   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1948 }
1949 
1950 void ASTStmtWriter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1951   VisitOverloadExpr(E);
1952   Record.push_back(E->isArrow());
1953   Record.push_back(E->hasUnresolvedUsing());
1954   Record.AddStmt(!E->isImplicitAccess() ? E->getBase() : nullptr);
1955   Record.AddTypeRef(E->getBaseType());
1956   Record.AddSourceLocation(E->getOperatorLoc());
1957   Code = serialization::EXPR_CXX_UNRESOLVED_MEMBER;
1958 }
1959 
1960 void ASTStmtWriter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1961   VisitOverloadExpr(E);
1962   Record.push_back(E->requiresADL());
1963   Record.push_back(E->isOverloaded());
1964   Record.AddDeclRef(E->getNamingClass());
1965   Code = serialization::EXPR_CXX_UNRESOLVED_LOOKUP;
1966 }
1967 
1968 void ASTStmtWriter::VisitTypeTraitExpr(TypeTraitExpr *E) {
1969   VisitExpr(E);
1970   Record.push_back(E->TypeTraitExprBits.NumArgs);
1971   Record.push_back(E->TypeTraitExprBits.Kind); // FIXME: Stable encoding
1972   Record.push_back(E->TypeTraitExprBits.Value);
1973   Record.AddSourceRange(E->getSourceRange());
1974   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1975     Record.AddTypeSourceInfo(E->getArg(I));
1976   Code = serialization::EXPR_TYPE_TRAIT;
1977 }
1978 
1979 void ASTStmtWriter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1980   VisitExpr(E);
1981   Record.push_back(E->getTrait());
1982   Record.push_back(E->getValue());
1983   Record.AddSourceRange(E->getSourceRange());
1984   Record.AddTypeSourceInfo(E->getQueriedTypeSourceInfo());
1985   Record.AddStmt(E->getDimensionExpression());
1986   Code = serialization::EXPR_ARRAY_TYPE_TRAIT;
1987 }
1988 
1989 void ASTStmtWriter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1990   VisitExpr(E);
1991   Record.push_back(E->getTrait());
1992   Record.push_back(E->getValue());
1993   Record.AddSourceRange(E->getSourceRange());
1994   Record.AddStmt(E->getQueriedExpression());
1995   Code = serialization::EXPR_CXX_EXPRESSION_TRAIT;
1996 }
1997 
1998 void ASTStmtWriter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1999   VisitExpr(E);
2000   Record.push_back(E->getValue());
2001   Record.AddSourceRange(E->getSourceRange());
2002   Record.AddStmt(E->getOperand());
2003   Code = serialization::EXPR_CXX_NOEXCEPT;
2004 }
2005 
2006 void ASTStmtWriter::VisitPackExpansionExpr(PackExpansionExpr *E) {
2007   VisitExpr(E);
2008   Record.AddSourceLocation(E->getEllipsisLoc());
2009   Record.push_back(E->NumExpansions);
2010   Record.AddStmt(E->getPattern());
2011   Code = serialization::EXPR_PACK_EXPANSION;
2012 }
2013 
2014 void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
2015   VisitExpr(E);
2016   Record.push_back(E->isPartiallySubstituted() ? E->getPartialArguments().size()
2017                                                : 0);
2018   Record.AddSourceLocation(E->OperatorLoc);
2019   Record.AddSourceLocation(E->PackLoc);
2020   Record.AddSourceLocation(E->RParenLoc);
2021   Record.AddDeclRef(E->Pack);
2022   if (E->isPartiallySubstituted()) {
2023     for (const auto &TA : E->getPartialArguments())
2024       Record.AddTemplateArgument(TA);
2025   } else if (!E->isValueDependent()) {
2026     Record.push_back(E->getPackLength());
2027   }
2028   Code = serialization::EXPR_SIZEOF_PACK;
2029 }
2030 
2031 void ASTStmtWriter::VisitSubstNonTypeTemplateParmExpr(
2032                                               SubstNonTypeTemplateParmExpr *E) {
2033   VisitExpr(E);
2034   Record.AddDeclRef(E->getAssociatedDecl());
2035   Record.push_back(E->isReferenceParameter());
2036   Record.push_back(E->getIndex());
2037   if (auto PackIndex = E->getPackIndex())
2038     Record.push_back(*PackIndex + 1);
2039   else
2040     Record.push_back(0);
2041   Record.AddSourceLocation(E->getNameLoc());
2042   Record.AddStmt(E->getReplacement());
2043   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM;
2044 }
2045 
2046 void ASTStmtWriter::VisitSubstNonTypeTemplateParmPackExpr(
2047                                           SubstNonTypeTemplateParmPackExpr *E) {
2048   VisitExpr(E);
2049   Record.AddDeclRef(E->getAssociatedDecl());
2050   Record.push_back(E->getIndex());
2051   Record.AddTemplateArgument(E->getArgumentPack());
2052   Record.AddSourceLocation(E->getParameterPackLocation());
2053   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK;
2054 }
2055 
2056 void ASTStmtWriter::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
2057   VisitExpr(E);
2058   Record.push_back(E->getNumExpansions());
2059   Record.AddDeclRef(E->getParameterPack());
2060   Record.AddSourceLocation(E->getParameterPackLocation());
2061   for (FunctionParmPackExpr::iterator I = E->begin(), End = E->end();
2062        I != End; ++I)
2063     Record.AddDeclRef(*I);
2064   Code = serialization::EXPR_FUNCTION_PARM_PACK;
2065 }
2066 
2067 void ASTStmtWriter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
2068   VisitExpr(E);
2069   Record.push_back(static_cast<bool>(E->getLifetimeExtendedTemporaryDecl()));
2070   if (E->getLifetimeExtendedTemporaryDecl())
2071     Record.AddDeclRef(E->getLifetimeExtendedTemporaryDecl());
2072   else
2073     Record.AddStmt(E->getSubExpr());
2074   Code = serialization::EXPR_MATERIALIZE_TEMPORARY;
2075 }
2076 
2077 void ASTStmtWriter::VisitCXXFoldExpr(CXXFoldExpr *E) {
2078   VisitExpr(E);
2079   Record.AddSourceLocation(E->LParenLoc);
2080   Record.AddSourceLocation(E->EllipsisLoc);
2081   Record.AddSourceLocation(E->RParenLoc);
2082   Record.push_back(E->NumExpansions);
2083   Record.AddStmt(E->SubExprs[0]);
2084   Record.AddStmt(E->SubExprs[1]);
2085   Record.AddStmt(E->SubExprs[2]);
2086   Record.push_back(E->Opcode);
2087   Code = serialization::EXPR_CXX_FOLD;
2088 }
2089 
2090 void ASTStmtWriter::VisitCXXParenListInitExpr(CXXParenListInitExpr *E) {
2091   VisitExpr(E);
2092   ArrayRef<Expr *> InitExprs = E->getInitExprs();
2093   Record.push_back(InitExprs.size());
2094   Record.push_back(E->getUserSpecifiedInitExprs().size());
2095   Record.AddSourceLocation(E->getInitLoc());
2096   Record.AddSourceLocation(E->getBeginLoc());
2097   Record.AddSourceLocation(E->getEndLoc());
2098   for (Expr *InitExpr : E->getInitExprs())
2099     Record.AddStmt(InitExpr);
2100   Expr *ArrayFiller = E->getArrayFiller();
2101   FieldDecl *UnionField = E->getInitializedFieldInUnion();
2102   bool HasArrayFillerOrUnionDecl = ArrayFiller || UnionField;
2103   Record.push_back(HasArrayFillerOrUnionDecl);
2104   if (HasArrayFillerOrUnionDecl) {
2105     Record.push_back(static_cast<bool>(ArrayFiller));
2106     if (ArrayFiller)
2107       Record.AddStmt(ArrayFiller);
2108     else
2109       Record.AddDeclRef(UnionField);
2110   }
2111   Code = serialization::EXPR_CXX_PAREN_LIST_INIT;
2112 }
2113 
2114 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
2115   VisitExpr(E);
2116   Record.AddStmt(E->getSourceExpr());
2117   Record.AddSourceLocation(E->getLocation());
2118   Record.push_back(E->isUnique());
2119   Code = serialization::EXPR_OPAQUE_VALUE;
2120 }
2121 
2122 void ASTStmtWriter::VisitTypoExpr(TypoExpr *E) {
2123   VisitExpr(E);
2124   // TODO: Figure out sane writer behavior for a TypoExpr, if necessary
2125   llvm_unreachable("Cannot write TypoExpr nodes");
2126 }
2127 
2128 //===----------------------------------------------------------------------===//
2129 // CUDA Expressions and Statements.
2130 //===----------------------------------------------------------------------===//
2131 
2132 void ASTStmtWriter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
2133   VisitCallExpr(E);
2134   Record.AddStmt(E->getConfig());
2135   Code = serialization::EXPR_CUDA_KERNEL_CALL;
2136 }
2137 
2138 //===----------------------------------------------------------------------===//
2139 // OpenCL Expressions and Statements.
2140 //===----------------------------------------------------------------------===//
2141 void ASTStmtWriter::VisitAsTypeExpr(AsTypeExpr *E) {
2142   VisitExpr(E);
2143   Record.AddSourceLocation(E->getBuiltinLoc());
2144   Record.AddSourceLocation(E->getRParenLoc());
2145   Record.AddStmt(E->getSrcExpr());
2146   Code = serialization::EXPR_ASTYPE;
2147 }
2148 
2149 //===----------------------------------------------------------------------===//
2150 // Microsoft Expressions and Statements.
2151 //===----------------------------------------------------------------------===//
2152 void ASTStmtWriter::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
2153   VisitExpr(E);
2154   Record.push_back(E->isArrow());
2155   Record.AddStmt(E->getBaseExpr());
2156   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
2157   Record.AddSourceLocation(E->getMemberLoc());
2158   Record.AddDeclRef(E->getPropertyDecl());
2159   Code = serialization::EXPR_CXX_PROPERTY_REF_EXPR;
2160 }
2161 
2162 void ASTStmtWriter::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
2163   VisitExpr(E);
2164   Record.AddStmt(E->getBase());
2165   Record.AddStmt(E->getIdx());
2166   Record.AddSourceLocation(E->getRBracketLoc());
2167   Code = serialization::EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR;
2168 }
2169 
2170 void ASTStmtWriter::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
2171   VisitExpr(E);
2172   Record.AddSourceRange(E->getSourceRange());
2173   Record.AddDeclRef(E->getGuidDecl());
2174   if (E->isTypeOperand()) {
2175     Record.AddTypeSourceInfo(E->getTypeOperandSourceInfo());
2176     Code = serialization::EXPR_CXX_UUIDOF_TYPE;
2177   } else {
2178     Record.AddStmt(E->getExprOperand());
2179     Code = serialization::EXPR_CXX_UUIDOF_EXPR;
2180   }
2181 }
2182 
2183 void ASTStmtWriter::VisitSEHExceptStmt(SEHExceptStmt *S) {
2184   VisitStmt(S);
2185   Record.AddSourceLocation(S->getExceptLoc());
2186   Record.AddStmt(S->getFilterExpr());
2187   Record.AddStmt(S->getBlock());
2188   Code = serialization::STMT_SEH_EXCEPT;
2189 }
2190 
2191 void ASTStmtWriter::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
2192   VisitStmt(S);
2193   Record.AddSourceLocation(S->getFinallyLoc());
2194   Record.AddStmt(S->getBlock());
2195   Code = serialization::STMT_SEH_FINALLY;
2196 }
2197 
2198 void ASTStmtWriter::VisitSEHTryStmt(SEHTryStmt *S) {
2199   VisitStmt(S);
2200   Record.push_back(S->getIsCXXTry());
2201   Record.AddSourceLocation(S->getTryLoc());
2202   Record.AddStmt(S->getTryBlock());
2203   Record.AddStmt(S->getHandler());
2204   Code = serialization::STMT_SEH_TRY;
2205 }
2206 
2207 void ASTStmtWriter::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
2208   VisitStmt(S);
2209   Record.AddSourceLocation(S->getLeaveLoc());
2210   Code = serialization::STMT_SEH_LEAVE;
2211 }
2212 
2213 //===----------------------------------------------------------------------===//
2214 // OpenMP Directives.
2215 //===----------------------------------------------------------------------===//
2216 
2217 void ASTStmtWriter::VisitOMPCanonicalLoop(OMPCanonicalLoop *S) {
2218   VisitStmt(S);
2219   for (Stmt *SubStmt : S->SubStmts)
2220     Record.AddStmt(SubStmt);
2221   Code = serialization::STMT_OMP_CANONICAL_LOOP;
2222 }
2223 
2224 void ASTStmtWriter::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
2225   Record.writeOMPChildren(E->Data);
2226   Record.AddSourceLocation(E->getBeginLoc());
2227   Record.AddSourceLocation(E->getEndLoc());
2228 }
2229 
2230 void ASTStmtWriter::VisitOMPLoopBasedDirective(OMPLoopBasedDirective *D) {
2231   VisitStmt(D);
2232   Record.writeUInt32(D->getLoopsNumber());
2233   VisitOMPExecutableDirective(D);
2234 }
2235 
2236 void ASTStmtWriter::VisitOMPLoopDirective(OMPLoopDirective *D) {
2237   VisitOMPLoopBasedDirective(D);
2238 }
2239 
2240 void ASTStmtWriter::VisitOMPMetaDirective(OMPMetaDirective *D) {
2241   VisitStmt(D);
2242   Record.push_back(D->getNumClauses());
2243   VisitOMPExecutableDirective(D);
2244   Code = serialization::STMT_OMP_META_DIRECTIVE;
2245 }
2246 
2247 void ASTStmtWriter::VisitOMPParallelDirective(OMPParallelDirective *D) {
2248   VisitStmt(D);
2249   VisitOMPExecutableDirective(D);
2250   Record.writeBool(D->hasCancel());
2251   Code = serialization::STMT_OMP_PARALLEL_DIRECTIVE;
2252 }
2253 
2254 void ASTStmtWriter::VisitOMPSimdDirective(OMPSimdDirective *D) {
2255   VisitOMPLoopDirective(D);
2256   Code = serialization::STMT_OMP_SIMD_DIRECTIVE;
2257 }
2258 
2259 void ASTStmtWriter::VisitOMPLoopTransformationDirective(
2260     OMPLoopTransformationDirective *D) {
2261   VisitOMPLoopBasedDirective(D);
2262   Record.writeUInt32(D->getNumGeneratedLoops());
2263 }
2264 
2265 void ASTStmtWriter::VisitOMPTileDirective(OMPTileDirective *D) {
2266   VisitOMPLoopTransformationDirective(D);
2267   Code = serialization::STMT_OMP_TILE_DIRECTIVE;
2268 }
2269 
2270 void ASTStmtWriter::VisitOMPUnrollDirective(OMPUnrollDirective *D) {
2271   VisitOMPLoopTransformationDirective(D);
2272   Code = serialization::STMT_OMP_UNROLL_DIRECTIVE;
2273 }
2274 
2275 void ASTStmtWriter::VisitOMPForDirective(OMPForDirective *D) {
2276   VisitOMPLoopDirective(D);
2277   Record.writeBool(D->hasCancel());
2278   Code = serialization::STMT_OMP_FOR_DIRECTIVE;
2279 }
2280 
2281 void ASTStmtWriter::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
2282   VisitOMPLoopDirective(D);
2283   Code = serialization::STMT_OMP_FOR_SIMD_DIRECTIVE;
2284 }
2285 
2286 void ASTStmtWriter::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
2287   VisitStmt(D);
2288   VisitOMPExecutableDirective(D);
2289   Record.writeBool(D->hasCancel());
2290   Code = serialization::STMT_OMP_SECTIONS_DIRECTIVE;
2291 }
2292 
2293 void ASTStmtWriter::VisitOMPSectionDirective(OMPSectionDirective *D) {
2294   VisitStmt(D);
2295   VisitOMPExecutableDirective(D);
2296   Record.writeBool(D->hasCancel());
2297   Code = serialization::STMT_OMP_SECTION_DIRECTIVE;
2298 }
2299 
2300 void ASTStmtWriter::VisitOMPSingleDirective(OMPSingleDirective *D) {
2301   VisitStmt(D);
2302   VisitOMPExecutableDirective(D);
2303   Code = serialization::STMT_OMP_SINGLE_DIRECTIVE;
2304 }
2305 
2306 void ASTStmtWriter::VisitOMPMasterDirective(OMPMasterDirective *D) {
2307   VisitStmt(D);
2308   VisitOMPExecutableDirective(D);
2309   Code = serialization::STMT_OMP_MASTER_DIRECTIVE;
2310 }
2311 
2312 void ASTStmtWriter::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
2313   VisitStmt(D);
2314   VisitOMPExecutableDirective(D);
2315   Record.AddDeclarationNameInfo(D->getDirectiveName());
2316   Code = serialization::STMT_OMP_CRITICAL_DIRECTIVE;
2317 }
2318 
2319 void ASTStmtWriter::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
2320   VisitOMPLoopDirective(D);
2321   Record.writeBool(D->hasCancel());
2322   Code = serialization::STMT_OMP_PARALLEL_FOR_DIRECTIVE;
2323 }
2324 
2325 void ASTStmtWriter::VisitOMPParallelForSimdDirective(
2326     OMPParallelForSimdDirective *D) {
2327   VisitOMPLoopDirective(D);
2328   Code = serialization::STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE;
2329 }
2330 
2331 void ASTStmtWriter::VisitOMPParallelMasterDirective(
2332     OMPParallelMasterDirective *D) {
2333   VisitStmt(D);
2334   VisitOMPExecutableDirective(D);
2335   Code = serialization::STMT_OMP_PARALLEL_MASTER_DIRECTIVE;
2336 }
2337 
2338 void ASTStmtWriter::VisitOMPParallelMaskedDirective(
2339     OMPParallelMaskedDirective *D) {
2340   VisitStmt(D);
2341   VisitOMPExecutableDirective(D);
2342   Code = serialization::STMT_OMP_PARALLEL_MASKED_DIRECTIVE;
2343 }
2344 
2345 void ASTStmtWriter::VisitOMPParallelSectionsDirective(
2346     OMPParallelSectionsDirective *D) {
2347   VisitStmt(D);
2348   VisitOMPExecutableDirective(D);
2349   Record.writeBool(D->hasCancel());
2350   Code = serialization::STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE;
2351 }
2352 
2353 void ASTStmtWriter::VisitOMPTaskDirective(OMPTaskDirective *D) {
2354   VisitStmt(D);
2355   VisitOMPExecutableDirective(D);
2356   Record.writeBool(D->hasCancel());
2357   Code = serialization::STMT_OMP_TASK_DIRECTIVE;
2358 }
2359 
2360 void ASTStmtWriter::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
2361   VisitStmt(D);
2362   VisitOMPExecutableDirective(D);
2363   Record.writeBool(D->isXLHSInRHSPart());
2364   Record.writeBool(D->isPostfixUpdate());
2365   Record.writeBool(D->isFailOnly());
2366   Code = serialization::STMT_OMP_ATOMIC_DIRECTIVE;
2367 }
2368 
2369 void ASTStmtWriter::VisitOMPTargetDirective(OMPTargetDirective *D) {
2370   VisitStmt(D);
2371   VisitOMPExecutableDirective(D);
2372   Code = serialization::STMT_OMP_TARGET_DIRECTIVE;
2373 }
2374 
2375 void ASTStmtWriter::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
2376   VisitStmt(D);
2377   VisitOMPExecutableDirective(D);
2378   Code = serialization::STMT_OMP_TARGET_DATA_DIRECTIVE;
2379 }
2380 
2381 void ASTStmtWriter::VisitOMPTargetEnterDataDirective(
2382     OMPTargetEnterDataDirective *D) {
2383   VisitStmt(D);
2384   VisitOMPExecutableDirective(D);
2385   Code = serialization::STMT_OMP_TARGET_ENTER_DATA_DIRECTIVE;
2386 }
2387 
2388 void ASTStmtWriter::VisitOMPTargetExitDataDirective(
2389     OMPTargetExitDataDirective *D) {
2390   VisitStmt(D);
2391   VisitOMPExecutableDirective(D);
2392   Code = serialization::STMT_OMP_TARGET_EXIT_DATA_DIRECTIVE;
2393 }
2394 
2395 void ASTStmtWriter::VisitOMPTargetParallelDirective(
2396     OMPTargetParallelDirective *D) {
2397   VisitStmt(D);
2398   VisitOMPExecutableDirective(D);
2399   Record.writeBool(D->hasCancel());
2400   Code = serialization::STMT_OMP_TARGET_PARALLEL_DIRECTIVE;
2401 }
2402 
2403 void ASTStmtWriter::VisitOMPTargetParallelForDirective(
2404     OMPTargetParallelForDirective *D) {
2405   VisitOMPLoopDirective(D);
2406   Record.writeBool(D->hasCancel());
2407   Code = serialization::STMT_OMP_TARGET_PARALLEL_FOR_DIRECTIVE;
2408 }
2409 
2410 void ASTStmtWriter::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
2411   VisitStmt(D);
2412   VisitOMPExecutableDirective(D);
2413   Code = serialization::STMT_OMP_TASKYIELD_DIRECTIVE;
2414 }
2415 
2416 void ASTStmtWriter::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
2417   VisitStmt(D);
2418   VisitOMPExecutableDirective(D);
2419   Code = serialization::STMT_OMP_BARRIER_DIRECTIVE;
2420 }
2421 
2422 void ASTStmtWriter::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
2423   VisitStmt(D);
2424   Record.push_back(D->getNumClauses());
2425   VisitOMPExecutableDirective(D);
2426   Code = serialization::STMT_OMP_TASKWAIT_DIRECTIVE;
2427 }
2428 
2429 void ASTStmtWriter::VisitOMPErrorDirective(OMPErrorDirective *D) {
2430   VisitStmt(D);
2431   Record.push_back(D->getNumClauses());
2432   VisitOMPExecutableDirective(D);
2433   Code = serialization::STMT_OMP_ERROR_DIRECTIVE;
2434 }
2435 
2436 void ASTStmtWriter::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
2437   VisitStmt(D);
2438   VisitOMPExecutableDirective(D);
2439   Code = serialization::STMT_OMP_TASKGROUP_DIRECTIVE;
2440 }
2441 
2442 void ASTStmtWriter::VisitOMPFlushDirective(OMPFlushDirective *D) {
2443   VisitStmt(D);
2444   VisitOMPExecutableDirective(D);
2445   Code = serialization::STMT_OMP_FLUSH_DIRECTIVE;
2446 }
2447 
2448 void ASTStmtWriter::VisitOMPDepobjDirective(OMPDepobjDirective *D) {
2449   VisitStmt(D);
2450   VisitOMPExecutableDirective(D);
2451   Code = serialization::STMT_OMP_DEPOBJ_DIRECTIVE;
2452 }
2453 
2454 void ASTStmtWriter::VisitOMPScanDirective(OMPScanDirective *D) {
2455   VisitStmt(D);
2456   VisitOMPExecutableDirective(D);
2457   Code = serialization::STMT_OMP_SCAN_DIRECTIVE;
2458 }
2459 
2460 void ASTStmtWriter::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
2461   VisitStmt(D);
2462   VisitOMPExecutableDirective(D);
2463   Code = serialization::STMT_OMP_ORDERED_DIRECTIVE;
2464 }
2465 
2466 void ASTStmtWriter::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
2467   VisitStmt(D);
2468   VisitOMPExecutableDirective(D);
2469   Code = serialization::STMT_OMP_TEAMS_DIRECTIVE;
2470 }
2471 
2472 void ASTStmtWriter::VisitOMPCancellationPointDirective(
2473     OMPCancellationPointDirective *D) {
2474   VisitStmt(D);
2475   VisitOMPExecutableDirective(D);
2476   Record.writeEnum(D->getCancelRegion());
2477   Code = serialization::STMT_OMP_CANCELLATION_POINT_DIRECTIVE;
2478 }
2479 
2480 void ASTStmtWriter::VisitOMPCancelDirective(OMPCancelDirective *D) {
2481   VisitStmt(D);
2482   VisitOMPExecutableDirective(D);
2483   Record.writeEnum(D->getCancelRegion());
2484   Code = serialization::STMT_OMP_CANCEL_DIRECTIVE;
2485 }
2486 
2487 void ASTStmtWriter::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
2488   VisitOMPLoopDirective(D);
2489   Record.writeBool(D->hasCancel());
2490   Code = serialization::STMT_OMP_TASKLOOP_DIRECTIVE;
2491 }
2492 
2493 void ASTStmtWriter::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
2494   VisitOMPLoopDirective(D);
2495   Code = serialization::STMT_OMP_TASKLOOP_SIMD_DIRECTIVE;
2496 }
2497 
2498 void ASTStmtWriter::VisitOMPMasterTaskLoopDirective(
2499     OMPMasterTaskLoopDirective *D) {
2500   VisitOMPLoopDirective(D);
2501   Record.writeBool(D->hasCancel());
2502   Code = serialization::STMT_OMP_MASTER_TASKLOOP_DIRECTIVE;
2503 }
2504 
2505 void ASTStmtWriter::VisitOMPMaskedTaskLoopDirective(
2506     OMPMaskedTaskLoopDirective *D) {
2507   VisitOMPLoopDirective(D);
2508   Record.writeBool(D->hasCancel());
2509   Code = serialization::STMT_OMP_MASKED_TASKLOOP_DIRECTIVE;
2510 }
2511 
2512 void ASTStmtWriter::VisitOMPMasterTaskLoopSimdDirective(
2513     OMPMasterTaskLoopSimdDirective *D) {
2514   VisitOMPLoopDirective(D);
2515   Code = serialization::STMT_OMP_MASTER_TASKLOOP_SIMD_DIRECTIVE;
2516 }
2517 
2518 void ASTStmtWriter::VisitOMPMaskedTaskLoopSimdDirective(
2519     OMPMaskedTaskLoopSimdDirective *D) {
2520   VisitOMPLoopDirective(D);
2521   Code = serialization::STMT_OMP_MASKED_TASKLOOP_SIMD_DIRECTIVE;
2522 }
2523 
2524 void ASTStmtWriter::VisitOMPParallelMasterTaskLoopDirective(
2525     OMPParallelMasterTaskLoopDirective *D) {
2526   VisitOMPLoopDirective(D);
2527   Record.writeBool(D->hasCancel());
2528   Code = serialization::STMT_OMP_PARALLEL_MASTER_TASKLOOP_DIRECTIVE;
2529 }
2530 
2531 void ASTStmtWriter::VisitOMPParallelMaskedTaskLoopDirective(
2532     OMPParallelMaskedTaskLoopDirective *D) {
2533   VisitOMPLoopDirective(D);
2534   Record.writeBool(D->hasCancel());
2535   Code = serialization::STMT_OMP_PARALLEL_MASKED_TASKLOOP_DIRECTIVE;
2536 }
2537 
2538 void ASTStmtWriter::VisitOMPParallelMasterTaskLoopSimdDirective(
2539     OMPParallelMasterTaskLoopSimdDirective *D) {
2540   VisitOMPLoopDirective(D);
2541   Code = serialization::STMT_OMP_PARALLEL_MASTER_TASKLOOP_SIMD_DIRECTIVE;
2542 }
2543 
2544 void ASTStmtWriter::VisitOMPParallelMaskedTaskLoopSimdDirective(
2545     OMPParallelMaskedTaskLoopSimdDirective *D) {
2546   VisitOMPLoopDirective(D);
2547   Code = serialization::STMT_OMP_PARALLEL_MASKED_TASKLOOP_SIMD_DIRECTIVE;
2548 }
2549 
2550 void ASTStmtWriter::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
2551   VisitOMPLoopDirective(D);
2552   Code = serialization::STMT_OMP_DISTRIBUTE_DIRECTIVE;
2553 }
2554 
2555 void ASTStmtWriter::VisitOMPTargetUpdateDirective(OMPTargetUpdateDirective *D) {
2556   VisitStmt(D);
2557   VisitOMPExecutableDirective(D);
2558   Code = serialization::STMT_OMP_TARGET_UPDATE_DIRECTIVE;
2559 }
2560 
2561 void ASTStmtWriter::VisitOMPDistributeParallelForDirective(
2562     OMPDistributeParallelForDirective *D) {
2563   VisitOMPLoopDirective(D);
2564   Record.writeBool(D->hasCancel());
2565   Code = serialization::STMT_OMP_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2566 }
2567 
2568 void ASTStmtWriter::VisitOMPDistributeParallelForSimdDirective(
2569     OMPDistributeParallelForSimdDirective *D) {
2570   VisitOMPLoopDirective(D);
2571   Code = serialization::STMT_OMP_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2572 }
2573 
2574 void ASTStmtWriter::VisitOMPDistributeSimdDirective(
2575     OMPDistributeSimdDirective *D) {
2576   VisitOMPLoopDirective(D);
2577   Code = serialization::STMT_OMP_DISTRIBUTE_SIMD_DIRECTIVE;
2578 }
2579 
2580 void ASTStmtWriter::VisitOMPTargetParallelForSimdDirective(
2581     OMPTargetParallelForSimdDirective *D) {
2582   VisitOMPLoopDirective(D);
2583   Code = serialization::STMT_OMP_TARGET_PARALLEL_FOR_SIMD_DIRECTIVE;
2584 }
2585 
2586 void ASTStmtWriter::VisitOMPTargetSimdDirective(OMPTargetSimdDirective *D) {
2587   VisitOMPLoopDirective(D);
2588   Code = serialization::STMT_OMP_TARGET_SIMD_DIRECTIVE;
2589 }
2590 
2591 void ASTStmtWriter::VisitOMPTeamsDistributeDirective(
2592     OMPTeamsDistributeDirective *D) {
2593   VisitOMPLoopDirective(D);
2594   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_DIRECTIVE;
2595 }
2596 
2597 void ASTStmtWriter::VisitOMPTeamsDistributeSimdDirective(
2598     OMPTeamsDistributeSimdDirective *D) {
2599   VisitOMPLoopDirective(D);
2600   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE;
2601 }
2602 
2603 void ASTStmtWriter::VisitOMPTeamsDistributeParallelForSimdDirective(
2604     OMPTeamsDistributeParallelForSimdDirective *D) {
2605   VisitOMPLoopDirective(D);
2606   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2607 }
2608 
2609 void ASTStmtWriter::VisitOMPTeamsDistributeParallelForDirective(
2610     OMPTeamsDistributeParallelForDirective *D) {
2611   VisitOMPLoopDirective(D);
2612   Record.writeBool(D->hasCancel());
2613   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2614 }
2615 
2616 void ASTStmtWriter::VisitOMPTargetTeamsDirective(OMPTargetTeamsDirective *D) {
2617   VisitStmt(D);
2618   VisitOMPExecutableDirective(D);
2619   Code = serialization::STMT_OMP_TARGET_TEAMS_DIRECTIVE;
2620 }
2621 
2622 void ASTStmtWriter::VisitOMPTargetTeamsDistributeDirective(
2623     OMPTargetTeamsDistributeDirective *D) {
2624   VisitOMPLoopDirective(D);
2625   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_DIRECTIVE;
2626 }
2627 
2628 void ASTStmtWriter::VisitOMPTargetTeamsDistributeParallelForDirective(
2629     OMPTargetTeamsDistributeParallelForDirective *D) {
2630   VisitOMPLoopDirective(D);
2631   Record.writeBool(D->hasCancel());
2632   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2633 }
2634 
2635 void ASTStmtWriter::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
2636     OMPTargetTeamsDistributeParallelForSimdDirective *D) {
2637   VisitOMPLoopDirective(D);
2638   Code = serialization::
2639       STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2640 }
2641 
2642 void ASTStmtWriter::VisitOMPTargetTeamsDistributeSimdDirective(
2643     OMPTargetTeamsDistributeSimdDirective *D) {
2644   VisitOMPLoopDirective(D);
2645   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE;
2646 }
2647 
2648 void ASTStmtWriter::VisitOMPInteropDirective(OMPInteropDirective *D) {
2649   VisitStmt(D);
2650   VisitOMPExecutableDirective(D);
2651   Code = serialization::STMT_OMP_INTEROP_DIRECTIVE;
2652 }
2653 
2654 void ASTStmtWriter::VisitOMPDispatchDirective(OMPDispatchDirective *D) {
2655   VisitStmt(D);
2656   VisitOMPExecutableDirective(D);
2657   Record.AddSourceLocation(D->getTargetCallLoc());
2658   Code = serialization::STMT_OMP_DISPATCH_DIRECTIVE;
2659 }
2660 
2661 void ASTStmtWriter::VisitOMPMaskedDirective(OMPMaskedDirective *D) {
2662   VisitStmt(D);
2663   VisitOMPExecutableDirective(D);
2664   Code = serialization::STMT_OMP_MASKED_DIRECTIVE;
2665 }
2666 
2667 void ASTStmtWriter::VisitOMPGenericLoopDirective(OMPGenericLoopDirective *D) {
2668   VisitOMPLoopDirective(D);
2669   Code = serialization::STMT_OMP_GENERIC_LOOP_DIRECTIVE;
2670 }
2671 
2672 void ASTStmtWriter::VisitOMPTeamsGenericLoopDirective(
2673     OMPTeamsGenericLoopDirective *D) {
2674   VisitOMPLoopDirective(D);
2675   Code = serialization::STMT_OMP_TEAMS_GENERIC_LOOP_DIRECTIVE;
2676 }
2677 
2678 void ASTStmtWriter::VisitOMPTargetTeamsGenericLoopDirective(
2679     OMPTargetTeamsGenericLoopDirective *D) {
2680   VisitOMPLoopDirective(D);
2681   Code = serialization::STMT_OMP_TARGET_TEAMS_GENERIC_LOOP_DIRECTIVE;
2682 }
2683 
2684 void ASTStmtWriter::VisitOMPParallelGenericLoopDirective(
2685     OMPParallelGenericLoopDirective *D) {
2686   VisitOMPLoopDirective(D);
2687   Code = serialization::STMT_OMP_PARALLEL_GENERIC_LOOP_DIRECTIVE;
2688 }
2689 
2690 void ASTStmtWriter::VisitOMPTargetParallelGenericLoopDirective(
2691     OMPTargetParallelGenericLoopDirective *D) {
2692   VisitOMPLoopDirective(D);
2693   Code = serialization::STMT_OMP_TARGET_PARALLEL_GENERIC_LOOP_DIRECTIVE;
2694 }
2695 
2696 //===----------------------------------------------------------------------===//
2697 // ASTWriter Implementation
2698 //===----------------------------------------------------------------------===//
2699 
2700 unsigned ASTWriter::RecordSwitchCaseID(SwitchCase *S) {
2701   assert(SwitchCaseIDs.find(S) == SwitchCaseIDs.end() &&
2702          "SwitchCase recorded twice");
2703   unsigned NextID = SwitchCaseIDs.size();
2704   SwitchCaseIDs[S] = NextID;
2705   return NextID;
2706 }
2707 
2708 unsigned ASTWriter::getSwitchCaseID(SwitchCase *S) {
2709   assert(SwitchCaseIDs.find(S) != SwitchCaseIDs.end() &&
2710          "SwitchCase hasn't been seen yet");
2711   return SwitchCaseIDs[S];
2712 }
2713 
2714 void ASTWriter::ClearSwitchCaseIDs() {
2715   SwitchCaseIDs.clear();
2716 }
2717 
2718 /// Write the given substatement or subexpression to the
2719 /// bitstream.
2720 void ASTWriter::WriteSubStmt(Stmt *S) {
2721   RecordData Record;
2722   ASTStmtWriter Writer(*this, Record);
2723   ++NumStatements;
2724 
2725   if (!S) {
2726     Stream.EmitRecord(serialization::STMT_NULL_PTR, Record);
2727     return;
2728   }
2729 
2730   llvm::DenseMap<Stmt *, uint64_t>::iterator I = SubStmtEntries.find(S);
2731   if (I != SubStmtEntries.end()) {
2732     Record.push_back(I->second);
2733     Stream.EmitRecord(serialization::STMT_REF_PTR, Record);
2734     return;
2735   }
2736 
2737 #ifndef NDEBUG
2738   assert(!ParentStmts.count(S) && "There is a Stmt cycle!");
2739 
2740   struct ParentStmtInserterRAII {
2741     Stmt *S;
2742     llvm::DenseSet<Stmt *> &ParentStmts;
2743 
2744     ParentStmtInserterRAII(Stmt *S, llvm::DenseSet<Stmt *> &ParentStmts)
2745       : S(S), ParentStmts(ParentStmts) {
2746       ParentStmts.insert(S);
2747     }
2748     ~ParentStmtInserterRAII() {
2749       ParentStmts.erase(S);
2750     }
2751   };
2752 
2753   ParentStmtInserterRAII ParentStmtInserter(S, ParentStmts);
2754 #endif
2755 
2756   Writer.Visit(S);
2757 
2758   uint64_t Offset = Writer.Emit();
2759   SubStmtEntries[S] = Offset;
2760 }
2761 
2762 /// Flush all of the statements that have been added to the
2763 /// queue via AddStmt().
2764 void ASTRecordWriter::FlushStmts() {
2765   // We expect to be the only consumer of the two temporary statement maps,
2766   // assert that they are empty.
2767   assert(Writer->SubStmtEntries.empty() && "unexpected entries in sub-stmt map");
2768   assert(Writer->ParentStmts.empty() && "unexpected entries in parent stmt map");
2769 
2770   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
2771     Writer->WriteSubStmt(StmtsToEmit[I]);
2772 
2773     assert(N == StmtsToEmit.size() && "record modified while being written!");
2774 
2775     // Note that we are at the end of a full expression. Any
2776     // expression records that follow this one are part of a different
2777     // expression.
2778     Writer->Stream.EmitRecord(serialization::STMT_STOP, ArrayRef<uint32_t>());
2779 
2780     Writer->SubStmtEntries.clear();
2781     Writer->ParentStmts.clear();
2782   }
2783 
2784   StmtsToEmit.clear();
2785 }
2786 
2787 void ASTRecordWriter::FlushSubStmts() {
2788   // For a nested statement, write out the substatements in reverse order (so
2789   // that a simple stack machine can be used when loading), and don't emit a
2790   // STMT_STOP after each one.
2791   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
2792     Writer->WriteSubStmt(StmtsToEmit[N - I - 1]);
2793     assert(N == StmtsToEmit.size() && "record modified while being written!");
2794   }
2795 
2796   StmtsToEmit.clear();
2797 }
2798