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      1 //===--- ASTWriterStmt.cpp - Statement and Expression Serialization -------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 ///
     10 /// \file
     11 /// \brief Implements serialization for Statements and Expressions.
     12 ///
     13 //===----------------------------------------------------------------------===//
     14 
     15 #include "clang/Serialization/ASTWriter.h"
     16 #include "clang/AST/ASTContext.h"
     17 #include "clang/AST/DeclCXX.h"
     18 #include "clang/AST/DeclObjC.h"
     19 #include "clang/AST/DeclTemplate.h"
     20 #include "clang/AST/StmtVisitor.h"
     21 #include "clang/Lex/Token.h"
     22 #include "llvm/Bitcode/BitstreamWriter.h"
     23 using namespace clang;
     24 
     25 //===----------------------------------------------------------------------===//
     26 // Statement/expression serialization
     27 //===----------------------------------------------------------------------===//
     28 
     29 namespace clang {
     30 
     31   class ASTStmtWriter : public StmtVisitor<ASTStmtWriter, void> {
     32     friend class OMPClauseWriter;
     33     ASTWriter &Writer;
     34     ASTWriter::RecordData &Record;
     35 
     36   public:
     37     serialization::StmtCode Code;
     38     unsigned AbbrevToUse;
     39 
     40     ASTStmtWriter(ASTWriter &Writer, ASTWriter::RecordData &Record)
     41       : Writer(Writer), Record(Record) { }
     42 
     43     void AddTemplateKWAndArgsInfo(const ASTTemplateKWAndArgsInfo &Args);
     44 
     45     void VisitStmt(Stmt *S);
     46 #define STMT(Type, Base) \
     47     void Visit##Type(Type *);
     48 #include "clang/AST/StmtNodes.inc"
     49   };
     50 }
     51 
     52 void ASTStmtWriter::
     53 AddTemplateKWAndArgsInfo(const ASTTemplateKWAndArgsInfo &Args) {
     54   Writer.AddSourceLocation(Args.getTemplateKeywordLoc(), Record);
     55   Writer.AddSourceLocation(Args.LAngleLoc, Record);
     56   Writer.AddSourceLocation(Args.RAngleLoc, Record);
     57   for (unsigned i=0; i != Args.NumTemplateArgs; ++i)
     58     Writer.AddTemplateArgumentLoc(Args.getTemplateArgs()[i], Record);
     59 }
     60 
     61 void ASTStmtWriter::VisitStmt(Stmt *S) {
     62 }
     63 
     64 void ASTStmtWriter::VisitNullStmt(NullStmt *S) {
     65   VisitStmt(S);
     66   Writer.AddSourceLocation(S->getSemiLoc(), Record);
     67   Record.push_back(S->HasLeadingEmptyMacro);
     68   Code = serialization::STMT_NULL;
     69 }
     70 
     71 void ASTStmtWriter::VisitCompoundStmt(CompoundStmt *S) {
     72   VisitStmt(S);
     73   Record.push_back(S->size());
     74   for (auto *CS : S->body())
     75     Writer.AddStmt(CS);
     76   Writer.AddSourceLocation(S->getLBracLoc(), Record);
     77   Writer.AddSourceLocation(S->getRBracLoc(), Record);
     78   Code = serialization::STMT_COMPOUND;
     79 }
     80 
     81 void ASTStmtWriter::VisitSwitchCase(SwitchCase *S) {
     82   VisitStmt(S);
     83   Record.push_back(Writer.getSwitchCaseID(S));
     84   Writer.AddSourceLocation(S->getKeywordLoc(), Record);
     85   Writer.AddSourceLocation(S->getColonLoc(), Record);
     86 }
     87 
     88 void ASTStmtWriter::VisitCaseStmt(CaseStmt *S) {
     89   VisitSwitchCase(S);
     90   Writer.AddStmt(S->getLHS());
     91   Writer.AddStmt(S->getRHS());
     92   Writer.AddStmt(S->getSubStmt());
     93   Writer.AddSourceLocation(S->getEllipsisLoc(), Record);
     94   Code = serialization::STMT_CASE;
     95 }
     96 
     97 void ASTStmtWriter::VisitDefaultStmt(DefaultStmt *S) {
     98   VisitSwitchCase(S);
     99   Writer.AddStmt(S->getSubStmt());
    100   Code = serialization::STMT_DEFAULT;
    101 }
    102 
    103 void ASTStmtWriter::VisitLabelStmt(LabelStmt *S) {
    104   VisitStmt(S);
    105   Writer.AddDeclRef(S->getDecl(), Record);
    106   Writer.AddStmt(S->getSubStmt());
    107   Writer.AddSourceLocation(S->getIdentLoc(), Record);
    108   Code = serialization::STMT_LABEL;
    109 }
    110 
    111 void ASTStmtWriter::VisitAttributedStmt(AttributedStmt *S) {
    112   VisitStmt(S);
    113   Record.push_back(S->getAttrs().size());
    114   Writer.WriteAttributes(S->getAttrs(), Record);
    115   Writer.AddStmt(S->getSubStmt());
    116   Writer.AddSourceLocation(S->getAttrLoc(), Record);
    117   Code = serialization::STMT_ATTRIBUTED;
    118 }
    119 
    120 void ASTStmtWriter::VisitIfStmt(IfStmt *S) {
    121   VisitStmt(S);
    122   Writer.AddDeclRef(S->getConditionVariable(), Record);
    123   Writer.AddStmt(S->getCond());
    124   Writer.AddStmt(S->getThen());
    125   Writer.AddStmt(S->getElse());
    126   Writer.AddSourceLocation(S->getIfLoc(), Record);
    127   Writer.AddSourceLocation(S->getElseLoc(), Record);
    128   Code = serialization::STMT_IF;
    129 }
    130 
    131 void ASTStmtWriter::VisitSwitchStmt(SwitchStmt *S) {
    132   VisitStmt(S);
    133   Writer.AddDeclRef(S->getConditionVariable(), Record);
    134   Writer.AddStmt(S->getCond());
    135   Writer.AddStmt(S->getBody());
    136   Writer.AddSourceLocation(S->getSwitchLoc(), Record);
    137   Record.push_back(S->isAllEnumCasesCovered());
    138   for (SwitchCase *SC = S->getSwitchCaseList(); SC;
    139        SC = SC->getNextSwitchCase())
    140     Record.push_back(Writer.RecordSwitchCaseID(SC));
    141   Code = serialization::STMT_SWITCH;
    142 }
    143 
    144 void ASTStmtWriter::VisitWhileStmt(WhileStmt *S) {
    145   VisitStmt(S);
    146   Writer.AddDeclRef(S->getConditionVariable(), Record);
    147   Writer.AddStmt(S->getCond());
    148   Writer.AddStmt(S->getBody());
    149   Writer.AddSourceLocation(S->getWhileLoc(), Record);
    150   Code = serialization::STMT_WHILE;
    151 }
    152 
    153 void ASTStmtWriter::VisitDoStmt(DoStmt *S) {
    154   VisitStmt(S);
    155   Writer.AddStmt(S->getCond());
    156   Writer.AddStmt(S->getBody());
    157   Writer.AddSourceLocation(S->getDoLoc(), Record);
    158   Writer.AddSourceLocation(S->getWhileLoc(), Record);
    159   Writer.AddSourceLocation(S->getRParenLoc(), Record);
    160   Code = serialization::STMT_DO;
    161 }
    162 
    163 void ASTStmtWriter::VisitForStmt(ForStmt *S) {
    164   VisitStmt(S);
    165   Writer.AddStmt(S->getInit());
    166   Writer.AddStmt(S->getCond());
    167   Writer.AddDeclRef(S->getConditionVariable(), Record);
    168   Writer.AddStmt(S->getInc());
    169   Writer.AddStmt(S->getBody());
    170   Writer.AddSourceLocation(S->getForLoc(), Record);
    171   Writer.AddSourceLocation(S->getLParenLoc(), Record);
    172   Writer.AddSourceLocation(S->getRParenLoc(), Record);
    173   Code = serialization::STMT_FOR;
    174 }
    175 
    176 void ASTStmtWriter::VisitGotoStmt(GotoStmt *S) {
    177   VisitStmt(S);
    178   Writer.AddDeclRef(S->getLabel(), Record);
    179   Writer.AddSourceLocation(S->getGotoLoc(), Record);
    180   Writer.AddSourceLocation(S->getLabelLoc(), Record);
    181   Code = serialization::STMT_GOTO;
    182 }
    183 
    184 void ASTStmtWriter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
    185   VisitStmt(S);
    186   Writer.AddSourceLocation(S->getGotoLoc(), Record);
    187   Writer.AddSourceLocation(S->getStarLoc(), Record);
    188   Writer.AddStmt(S->getTarget());
    189   Code = serialization::STMT_INDIRECT_GOTO;
    190 }
    191 
    192 void ASTStmtWriter::VisitContinueStmt(ContinueStmt *S) {
    193   VisitStmt(S);
    194   Writer.AddSourceLocation(S->getContinueLoc(), Record);
    195   Code = serialization::STMT_CONTINUE;
    196 }
    197 
    198 void ASTStmtWriter::VisitBreakStmt(BreakStmt *S) {
    199   VisitStmt(S);
    200   Writer.AddSourceLocation(S->getBreakLoc(), Record);
    201   Code = serialization::STMT_BREAK;
    202 }
    203 
    204 void ASTStmtWriter::VisitReturnStmt(ReturnStmt *S) {
    205   VisitStmt(S);
    206   Writer.AddStmt(S->getRetValue());
    207   Writer.AddSourceLocation(S->getReturnLoc(), Record);
    208   Writer.AddDeclRef(S->getNRVOCandidate(), Record);
    209   Code = serialization::STMT_RETURN;
    210 }
    211 
    212 void ASTStmtWriter::VisitDeclStmt(DeclStmt *S) {
    213   VisitStmt(S);
    214   Writer.AddSourceLocation(S->getStartLoc(), Record);
    215   Writer.AddSourceLocation(S->getEndLoc(), Record);
    216   DeclGroupRef DG = S->getDeclGroup();
    217   for (DeclGroupRef::iterator D = DG.begin(), DEnd = DG.end(); D != DEnd; ++D)
    218     Writer.AddDeclRef(*D, Record);
    219   Code = serialization::STMT_DECL;
    220 }
    221 
    222 void ASTStmtWriter::VisitAsmStmt(AsmStmt *S) {
    223   VisitStmt(S);
    224   Record.push_back(S->getNumOutputs());
    225   Record.push_back(S->getNumInputs());
    226   Record.push_back(S->getNumClobbers());
    227   Writer.AddSourceLocation(S->getAsmLoc(), Record);
    228   Record.push_back(S->isVolatile());
    229   Record.push_back(S->isSimple());
    230 }
    231 
    232 void ASTStmtWriter::VisitGCCAsmStmt(GCCAsmStmt *S) {
    233   VisitAsmStmt(S);
    234   Writer.AddSourceLocation(S->getRParenLoc(), Record);
    235   Writer.AddStmt(S->getAsmString());
    236 
    237   // Outputs
    238   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
    239     Writer.AddIdentifierRef(S->getOutputIdentifier(I), Record);
    240     Writer.AddStmt(S->getOutputConstraintLiteral(I));
    241     Writer.AddStmt(S->getOutputExpr(I));
    242   }
    243 
    244   // Inputs
    245   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
    246     Writer.AddIdentifierRef(S->getInputIdentifier(I), Record);
    247     Writer.AddStmt(S->getInputConstraintLiteral(I));
    248     Writer.AddStmt(S->getInputExpr(I));
    249   }
    250 
    251   // Clobbers
    252   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
    253     Writer.AddStmt(S->getClobberStringLiteral(I));
    254 
    255   Code = serialization::STMT_GCCASM;
    256 }
    257 
    258 void ASTStmtWriter::VisitMSAsmStmt(MSAsmStmt *S) {
    259   VisitAsmStmt(S);
    260   Writer.AddSourceLocation(S->getLBraceLoc(), Record);
    261   Writer.AddSourceLocation(S->getEndLoc(), Record);
    262   Record.push_back(S->getNumAsmToks());
    263   Writer.AddString(S->getAsmString(), Record);
    264 
    265   // Tokens
    266   for (unsigned I = 0, N = S->getNumAsmToks(); I != N; ++I) {
    267     Writer.AddToken(S->getAsmToks()[I], Record);
    268   }
    269 
    270   // Clobbers
    271   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I) {
    272     Writer.AddString(S->getClobber(I), Record);
    273   }
    274 
    275   // Outputs
    276   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
    277     Writer.AddStmt(S->getOutputExpr(I));
    278     Writer.AddString(S->getOutputConstraint(I), Record);
    279   }
    280 
    281   // Inputs
    282   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
    283     Writer.AddStmt(S->getInputExpr(I));
    284     Writer.AddString(S->getInputConstraint(I), Record);
    285   }
    286 
    287   Code = serialization::STMT_MSASM;
    288 }
    289 
    290 void ASTStmtWriter::VisitCoroutineBodyStmt(CoroutineBodyStmt *S) {
    291   // FIXME: Implement coroutine serialization.
    292   llvm_unreachable("unimplemented");
    293 }
    294 
    295 void ASTStmtWriter::VisitCoreturnStmt(CoreturnStmt *S) {
    296   // FIXME: Implement coroutine serialization.
    297   llvm_unreachable("unimplemented");
    298 }
    299 
    300 void ASTStmtWriter::VisitCoawaitExpr(CoawaitExpr *S) {
    301   // FIXME: Implement coroutine serialization.
    302   llvm_unreachable("unimplemented");
    303 }
    304 
    305 void ASTStmtWriter::VisitCoyieldExpr(CoyieldExpr *S) {
    306   // FIXME: Implement coroutine serialization.
    307   llvm_unreachable("unimplemented");
    308 }
    309 
    310 void ASTStmtWriter::VisitCapturedStmt(CapturedStmt *S) {
    311   VisitStmt(S);
    312   // NumCaptures
    313   Record.push_back(std::distance(S->capture_begin(), S->capture_end()));
    314 
    315   // CapturedDecl and captured region kind
    316   Writer.AddDeclRef(S->getCapturedDecl(), Record);
    317   Record.push_back(S->getCapturedRegionKind());
    318 
    319   Writer.AddDeclRef(S->getCapturedRecordDecl(), Record);
    320 
    321   // Capture inits
    322   for (auto *I : S->capture_inits())
    323     Writer.AddStmt(I);
    324 
    325   // Body
    326   Writer.AddStmt(S->getCapturedStmt());
    327 
    328   // Captures
    329   for (const auto &I : S->captures()) {
    330     if (I.capturesThis() || I.capturesVariableArrayType())
    331       Writer.AddDeclRef(nullptr, Record);
    332     else
    333       Writer.AddDeclRef(I.getCapturedVar(), Record);
    334     Record.push_back(I.getCaptureKind());
    335     Writer.AddSourceLocation(I.getLocation(), Record);
    336   }
    337 
    338   Code = serialization::STMT_CAPTURED;
    339 }
    340 
    341 void ASTStmtWriter::VisitExpr(Expr *E) {
    342   VisitStmt(E);
    343   Writer.AddTypeRef(E->getType(), Record);
    344   Record.push_back(E->isTypeDependent());
    345   Record.push_back(E->isValueDependent());
    346   Record.push_back(E->isInstantiationDependent());
    347   Record.push_back(E->containsUnexpandedParameterPack());
    348   Record.push_back(E->getValueKind());
    349   Record.push_back(E->getObjectKind());
    350 }
    351 
    352 void ASTStmtWriter::VisitPredefinedExpr(PredefinedExpr *E) {
    353   VisitExpr(E);
    354   Writer.AddSourceLocation(E->getLocation(), Record);
    355   Record.push_back(E->getIdentType()); // FIXME: stable encoding
    356   Writer.AddStmt(E->getFunctionName());
    357   Code = serialization::EXPR_PREDEFINED;
    358 }
    359 
    360 void ASTStmtWriter::VisitDeclRefExpr(DeclRefExpr *E) {
    361   VisitExpr(E);
    362 
    363   Record.push_back(E->hasQualifier());
    364   Record.push_back(E->getDecl() != E->getFoundDecl());
    365   Record.push_back(E->hasTemplateKWAndArgsInfo());
    366   Record.push_back(E->hadMultipleCandidates());
    367   Record.push_back(E->refersToEnclosingVariableOrCapture());
    368 
    369   if (E->hasTemplateKWAndArgsInfo()) {
    370     unsigned NumTemplateArgs = E->getNumTemplateArgs();
    371     Record.push_back(NumTemplateArgs);
    372   }
    373 
    374   DeclarationName::NameKind nk = (E->getDecl()->getDeclName().getNameKind());
    375 
    376   if ((!E->hasTemplateKWAndArgsInfo()) && (!E->hasQualifier()) &&
    377       (E->getDecl() == E->getFoundDecl()) &&
    378       nk == DeclarationName::Identifier) {
    379     AbbrevToUse = Writer.getDeclRefExprAbbrev();
    380   }
    381 
    382   if (E->hasQualifier())
    383     Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
    384 
    385   if (E->getDecl() != E->getFoundDecl())
    386     Writer.AddDeclRef(E->getFoundDecl(), Record);
    387 
    388   if (E->hasTemplateKWAndArgsInfo())
    389     AddTemplateKWAndArgsInfo(*E->getTemplateKWAndArgsInfo());
    390 
    391   Writer.AddDeclRef(E->getDecl(), Record);
    392   Writer.AddSourceLocation(E->getLocation(), Record);
    393   Writer.AddDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName(), Record);
    394   Code = serialization::EXPR_DECL_REF;
    395 }
    396 
    397 void ASTStmtWriter::VisitIntegerLiteral(IntegerLiteral *E) {
    398   VisitExpr(E);
    399   Writer.AddSourceLocation(E->getLocation(), Record);
    400   Writer.AddAPInt(E->getValue(), Record);
    401 
    402   if (E->getValue().getBitWidth() == 32) {
    403     AbbrevToUse = Writer.getIntegerLiteralAbbrev();
    404   }
    405 
    406   Code = serialization::EXPR_INTEGER_LITERAL;
    407 }
    408 
    409 void ASTStmtWriter::VisitFloatingLiteral(FloatingLiteral *E) {
    410   VisitExpr(E);
    411   Record.push_back(E->getRawSemantics());
    412   Record.push_back(E->isExact());
    413   Writer.AddAPFloat(E->getValue(), Record);
    414   Writer.AddSourceLocation(E->getLocation(), Record);
    415   Code = serialization::EXPR_FLOATING_LITERAL;
    416 }
    417 
    418 void ASTStmtWriter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
    419   VisitExpr(E);
    420   Writer.AddStmt(E->getSubExpr());
    421   Code = serialization::EXPR_IMAGINARY_LITERAL;
    422 }
    423 
    424 void ASTStmtWriter::VisitStringLiteral(StringLiteral *E) {
    425   VisitExpr(E);
    426   Record.push_back(E->getByteLength());
    427   Record.push_back(E->getNumConcatenated());
    428   Record.push_back(E->getKind());
    429   Record.push_back(E->isPascal());
    430   // FIXME: String data should be stored as a blob at the end of the
    431   // StringLiteral. However, we can't do so now because we have no
    432   // provision for coping with abbreviations when we're jumping around
    433   // the AST file during deserialization.
    434   Record.append(E->getBytes().begin(), E->getBytes().end());
    435   for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
    436     Writer.AddSourceLocation(E->getStrTokenLoc(I), Record);
    437   Code = serialization::EXPR_STRING_LITERAL;
    438 }
    439 
    440 void ASTStmtWriter::VisitCharacterLiteral(CharacterLiteral *E) {
    441   VisitExpr(E);
    442   Record.push_back(E->getValue());
    443   Writer.AddSourceLocation(E->getLocation(), Record);
    444   Record.push_back(E->getKind());
    445 
    446   AbbrevToUse = Writer.getCharacterLiteralAbbrev();
    447 
    448   Code = serialization::EXPR_CHARACTER_LITERAL;
    449 }
    450 
    451 void ASTStmtWriter::VisitParenExpr(ParenExpr *E) {
    452   VisitExpr(E);
    453   Writer.AddSourceLocation(E->getLParen(), Record);
    454   Writer.AddSourceLocation(E->getRParen(), Record);
    455   Writer.AddStmt(E->getSubExpr());
    456   Code = serialization::EXPR_PAREN;
    457 }
    458 
    459 void ASTStmtWriter::VisitParenListExpr(ParenListExpr *E) {
    460   VisitExpr(E);
    461   Record.push_back(E->NumExprs);
    462   for (unsigned i=0; i != E->NumExprs; ++i)
    463     Writer.AddStmt(E->Exprs[i]);
    464   Writer.AddSourceLocation(E->LParenLoc, Record);
    465   Writer.AddSourceLocation(E->RParenLoc, Record);
    466   Code = serialization::EXPR_PAREN_LIST;
    467 }
    468 
    469 void ASTStmtWriter::VisitUnaryOperator(UnaryOperator *E) {
    470   VisitExpr(E);
    471   Writer.AddStmt(E->getSubExpr());
    472   Record.push_back(E->getOpcode()); // FIXME: stable encoding
    473   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
    474   Code = serialization::EXPR_UNARY_OPERATOR;
    475 }
    476 
    477 void ASTStmtWriter::VisitOffsetOfExpr(OffsetOfExpr *E) {
    478   VisitExpr(E);
    479   Record.push_back(E->getNumComponents());
    480   Record.push_back(E->getNumExpressions());
    481   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
    482   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    483   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
    484   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
    485     const OffsetOfExpr::OffsetOfNode &ON = E->getComponent(I);
    486     Record.push_back(ON.getKind()); // FIXME: Stable encoding
    487     Writer.AddSourceLocation(ON.getSourceRange().getBegin(), Record);
    488     Writer.AddSourceLocation(ON.getSourceRange().getEnd(), Record);
    489     switch (ON.getKind()) {
    490     case OffsetOfExpr::OffsetOfNode::Array:
    491       Record.push_back(ON.getArrayExprIndex());
    492       break;
    493 
    494     case OffsetOfExpr::OffsetOfNode::Field:
    495       Writer.AddDeclRef(ON.getField(), Record);
    496       break;
    497 
    498     case OffsetOfExpr::OffsetOfNode::Identifier:
    499       Writer.AddIdentifierRef(ON.getFieldName(), Record);
    500       break;
    501 
    502     case OffsetOfExpr::OffsetOfNode::Base:
    503       Writer.AddCXXBaseSpecifier(*ON.getBase(), Record);
    504       break;
    505     }
    506   }
    507   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
    508     Writer.AddStmt(E->getIndexExpr(I));
    509   Code = serialization::EXPR_OFFSETOF;
    510 }
    511 
    512 void ASTStmtWriter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
    513   VisitExpr(E);
    514   Record.push_back(E->getKind());
    515   if (E->isArgumentType())
    516     Writer.AddTypeSourceInfo(E->getArgumentTypeInfo(), Record);
    517   else {
    518     Record.push_back(0);
    519     Writer.AddStmt(E->getArgumentExpr());
    520   }
    521   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
    522   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    523   Code = serialization::EXPR_SIZEOF_ALIGN_OF;
    524 }
    525 
    526 void ASTStmtWriter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
    527   VisitExpr(E);
    528   Writer.AddStmt(E->getLHS());
    529   Writer.AddStmt(E->getRHS());
    530   Writer.AddSourceLocation(E->getRBracketLoc(), Record);
    531   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
    532 }
    533 
    534 void ASTStmtWriter::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
    535   VisitExpr(E);
    536   Writer.AddStmt(E->getBase());
    537   Writer.AddStmt(E->getLowerBound());
    538   Writer.AddStmt(E->getLength());
    539   Writer.AddSourceLocation(E->getColonLoc(), Record);
    540   Writer.AddSourceLocation(E->getRBracketLoc(), Record);
    541   Code = serialization::EXPR_OMP_ARRAY_SECTION;
    542 }
    543 
    544 void ASTStmtWriter::VisitCallExpr(CallExpr *E) {
    545   VisitExpr(E);
    546   Record.push_back(E->getNumArgs());
    547   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    548   Writer.AddStmt(E->getCallee());
    549   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
    550        Arg != ArgEnd; ++Arg)
    551     Writer.AddStmt(*Arg);
    552   Code = serialization::EXPR_CALL;
    553 }
    554 
    555 void ASTStmtWriter::VisitMemberExpr(MemberExpr *E) {
    556   // Don't call VisitExpr, we'll write everything here.
    557 
    558   Record.push_back(E->hasQualifier());
    559   if (E->hasQualifier())
    560     Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
    561 
    562   Record.push_back(E->HasTemplateKWAndArgsInfo);
    563   if (E->HasTemplateKWAndArgsInfo) {
    564     Writer.AddSourceLocation(E->getTemplateKeywordLoc(), Record);
    565     unsigned NumTemplateArgs = E->getNumTemplateArgs();
    566     Record.push_back(NumTemplateArgs);
    567     Writer.AddSourceLocation(E->getLAngleLoc(), Record);
    568     Writer.AddSourceLocation(E->getRAngleLoc(), Record);
    569     for (unsigned i=0; i != NumTemplateArgs; ++i)
    570       Writer.AddTemplateArgumentLoc(E->getTemplateArgs()[i], Record);
    571   }
    572 
    573   Record.push_back(E->hadMultipleCandidates());
    574 
    575   DeclAccessPair FoundDecl = E->getFoundDecl();
    576   Writer.AddDeclRef(FoundDecl.getDecl(), Record);
    577   Record.push_back(FoundDecl.getAccess());
    578 
    579   Writer.AddTypeRef(E->getType(), Record);
    580   Record.push_back(E->getValueKind());
    581   Record.push_back(E->getObjectKind());
    582   Writer.AddStmt(E->getBase());
    583   Writer.AddDeclRef(E->getMemberDecl(), Record);
    584   Writer.AddSourceLocation(E->getMemberLoc(), Record);
    585   Record.push_back(E->isArrow());
    586   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
    587   Writer.AddDeclarationNameLoc(E->MemberDNLoc,
    588                                E->getMemberDecl()->getDeclName(), Record);
    589   Code = serialization::EXPR_MEMBER;
    590 }
    591 
    592 void ASTStmtWriter::VisitObjCIsaExpr(ObjCIsaExpr *E) {
    593   VisitExpr(E);
    594   Writer.AddStmt(E->getBase());
    595   Writer.AddSourceLocation(E->getIsaMemberLoc(), Record);
    596   Writer.AddSourceLocation(E->getOpLoc(), Record);
    597   Record.push_back(E->isArrow());
    598   Code = serialization::EXPR_OBJC_ISA;
    599 }
    600 
    601 void ASTStmtWriter::
    602 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
    603   VisitExpr(E);
    604   Writer.AddStmt(E->getSubExpr());
    605   Record.push_back(E->shouldCopy());
    606   Code = serialization::EXPR_OBJC_INDIRECT_COPY_RESTORE;
    607 }
    608 
    609 void ASTStmtWriter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
    610   VisitExplicitCastExpr(E);
    611   Writer.AddSourceLocation(E->getLParenLoc(), Record);
    612   Writer.AddSourceLocation(E->getBridgeKeywordLoc(), Record);
    613   Record.push_back(E->getBridgeKind()); // FIXME: Stable encoding
    614   Code = serialization::EXPR_OBJC_BRIDGED_CAST;
    615 }
    616 
    617 void ASTStmtWriter::VisitCastExpr(CastExpr *E) {
    618   VisitExpr(E);
    619   Record.push_back(E->path_size());
    620   Writer.AddStmt(E->getSubExpr());
    621   Record.push_back(E->getCastKind()); // FIXME: stable encoding
    622 
    623   for (CastExpr::path_iterator
    624          PI = E->path_begin(), PE = E->path_end(); PI != PE; ++PI)
    625     Writer.AddCXXBaseSpecifier(**PI, Record);
    626 }
    627 
    628 void ASTStmtWriter::VisitBinaryOperator(BinaryOperator *E) {
    629   VisitExpr(E);
    630   Writer.AddStmt(E->getLHS());
    631   Writer.AddStmt(E->getRHS());
    632   Record.push_back(E->getOpcode()); // FIXME: stable encoding
    633   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
    634   Record.push_back(E->isFPContractable());
    635   Code = serialization::EXPR_BINARY_OPERATOR;
    636 }
    637 
    638 void ASTStmtWriter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
    639   VisitBinaryOperator(E);
    640   Writer.AddTypeRef(E->getComputationLHSType(), Record);
    641   Writer.AddTypeRef(E->getComputationResultType(), Record);
    642   Code = serialization::EXPR_COMPOUND_ASSIGN_OPERATOR;
    643 }
    644 
    645 void ASTStmtWriter::VisitConditionalOperator(ConditionalOperator *E) {
    646   VisitExpr(E);
    647   Writer.AddStmt(E->getCond());
    648   Writer.AddStmt(E->getLHS());
    649   Writer.AddStmt(E->getRHS());
    650   Writer.AddSourceLocation(E->getQuestionLoc(), Record);
    651   Writer.AddSourceLocation(E->getColonLoc(), Record);
    652   Code = serialization::EXPR_CONDITIONAL_OPERATOR;
    653 }
    654 
    655 void
    656 ASTStmtWriter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
    657   VisitExpr(E);
    658   Writer.AddStmt(E->getOpaqueValue());
    659   Writer.AddStmt(E->getCommon());
    660   Writer.AddStmt(E->getCond());
    661   Writer.AddStmt(E->getTrueExpr());
    662   Writer.AddStmt(E->getFalseExpr());
    663   Writer.AddSourceLocation(E->getQuestionLoc(), Record);
    664   Writer.AddSourceLocation(E->getColonLoc(), Record);
    665   Code = serialization::EXPR_BINARY_CONDITIONAL_OPERATOR;
    666 }
    667 
    668 void ASTStmtWriter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
    669   VisitCastExpr(E);
    670 
    671   if (E->path_size() == 0)
    672     AbbrevToUse = Writer.getExprImplicitCastAbbrev();
    673 
    674   Code = serialization::EXPR_IMPLICIT_CAST;
    675 }
    676 
    677 void ASTStmtWriter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
    678   VisitCastExpr(E);
    679   Writer.AddTypeSourceInfo(E->getTypeInfoAsWritten(), Record);
    680 }
    681 
    682 void ASTStmtWriter::VisitCStyleCastExpr(CStyleCastExpr *E) {
    683   VisitExplicitCastExpr(E);
    684   Writer.AddSourceLocation(E->getLParenLoc(), Record);
    685   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    686   Code = serialization::EXPR_CSTYLE_CAST;
    687 }
    688 
    689 void ASTStmtWriter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
    690   VisitExpr(E);
    691   Writer.AddSourceLocation(E->getLParenLoc(), Record);
    692   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
    693   Writer.AddStmt(E->getInitializer());
    694   Record.push_back(E->isFileScope());
    695   Code = serialization::EXPR_COMPOUND_LITERAL;
    696 }
    697 
    698 void ASTStmtWriter::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
    699   VisitExpr(E);
    700   Writer.AddStmt(E->getBase());
    701   Writer.AddIdentifierRef(&E->getAccessor(), Record);
    702   Writer.AddSourceLocation(E->getAccessorLoc(), Record);
    703   Code = serialization::EXPR_EXT_VECTOR_ELEMENT;
    704 }
    705 
    706 void ASTStmtWriter::VisitInitListExpr(InitListExpr *E) {
    707   VisitExpr(E);
    708   // NOTE: only add the (possibly null) syntactic form.
    709   // No need to serialize the isSemanticForm flag and the semantic form.
    710   Writer.AddStmt(E->getSyntacticForm());
    711   Writer.AddSourceLocation(E->getLBraceLoc(), Record);
    712   Writer.AddSourceLocation(E->getRBraceLoc(), Record);
    713   bool isArrayFiller = E->ArrayFillerOrUnionFieldInit.is<Expr*>();
    714   Record.push_back(isArrayFiller);
    715   if (isArrayFiller)
    716     Writer.AddStmt(E->getArrayFiller());
    717   else
    718     Writer.AddDeclRef(E->getInitializedFieldInUnion(), Record);
    719   Record.push_back(E->hadArrayRangeDesignator());
    720   Record.push_back(E->getNumInits());
    721   if (isArrayFiller) {
    722     // ArrayFiller may have filled "holes" due to designated initializer.
    723     // Replace them by 0 to indicate that the filler goes in that place.
    724     Expr *filler = E->getArrayFiller();
    725     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
    726       Writer.AddStmt(E->getInit(I) != filler ? E->getInit(I) : nullptr);
    727   } else {
    728     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
    729       Writer.AddStmt(E->getInit(I));
    730   }
    731   Code = serialization::EXPR_INIT_LIST;
    732 }
    733 
    734 void ASTStmtWriter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
    735   VisitExpr(E);
    736   Record.push_back(E->getNumSubExprs());
    737   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
    738     Writer.AddStmt(E->getSubExpr(I));
    739   Writer.AddSourceLocation(E->getEqualOrColonLoc(), Record);
    740   Record.push_back(E->usesGNUSyntax());
    741   for (DesignatedInitExpr::designators_iterator D = E->designators_begin(),
    742                                              DEnd = E->designators_end();
    743        D != DEnd; ++D) {
    744     if (D->isFieldDesignator()) {
    745       if (FieldDecl *Field = D->getField()) {
    746         Record.push_back(serialization::DESIG_FIELD_DECL);
    747         Writer.AddDeclRef(Field, Record);
    748       } else {
    749         Record.push_back(serialization::DESIG_FIELD_NAME);
    750         Writer.AddIdentifierRef(D->getFieldName(), Record);
    751       }
    752       Writer.AddSourceLocation(D->getDotLoc(), Record);
    753       Writer.AddSourceLocation(D->getFieldLoc(), Record);
    754     } else if (D->isArrayDesignator()) {
    755       Record.push_back(serialization::DESIG_ARRAY);
    756       Record.push_back(D->getFirstExprIndex());
    757       Writer.AddSourceLocation(D->getLBracketLoc(), Record);
    758       Writer.AddSourceLocation(D->getRBracketLoc(), Record);
    759     } else {
    760       assert(D->isArrayRangeDesignator() && "Unknown designator");
    761       Record.push_back(serialization::DESIG_ARRAY_RANGE);
    762       Record.push_back(D->getFirstExprIndex());
    763       Writer.AddSourceLocation(D->getLBracketLoc(), Record);
    764       Writer.AddSourceLocation(D->getEllipsisLoc(), Record);
    765       Writer.AddSourceLocation(D->getRBracketLoc(), Record);
    766     }
    767   }
    768   Code = serialization::EXPR_DESIGNATED_INIT;
    769 }
    770 
    771 void ASTStmtWriter::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
    772   VisitExpr(E);
    773   Writer.AddStmt(E->getBase());
    774   Writer.AddStmt(E->getUpdater());
    775   Code = serialization::EXPR_DESIGNATED_INIT_UPDATE;
    776 }
    777 
    778 void ASTStmtWriter::VisitNoInitExpr(NoInitExpr *E) {
    779   VisitExpr(E);
    780   Code = serialization::EXPR_NO_INIT;
    781 }
    782 
    783 void ASTStmtWriter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
    784   VisitExpr(E);
    785   Code = serialization::EXPR_IMPLICIT_VALUE_INIT;
    786 }
    787 
    788 void ASTStmtWriter::VisitVAArgExpr(VAArgExpr *E) {
    789   VisitExpr(E);
    790   Writer.AddStmt(E->getSubExpr());
    791   Writer.AddTypeSourceInfo(E->getWrittenTypeInfo(), Record);
    792   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
    793   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    794   Record.push_back(E->isMicrosoftABI());
    795   Code = serialization::EXPR_VA_ARG;
    796 }
    797 
    798 void ASTStmtWriter::VisitAddrLabelExpr(AddrLabelExpr *E) {
    799   VisitExpr(E);
    800   Writer.AddSourceLocation(E->getAmpAmpLoc(), Record);
    801   Writer.AddSourceLocation(E->getLabelLoc(), Record);
    802   Writer.AddDeclRef(E->getLabel(), Record);
    803   Code = serialization::EXPR_ADDR_LABEL;
    804 }
    805 
    806 void ASTStmtWriter::VisitStmtExpr(StmtExpr *E) {
    807   VisitExpr(E);
    808   Writer.AddStmt(E->getSubStmt());
    809   Writer.AddSourceLocation(E->getLParenLoc(), Record);
    810   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    811   Code = serialization::EXPR_STMT;
    812 }
    813 
    814 void ASTStmtWriter::VisitChooseExpr(ChooseExpr *E) {
    815   VisitExpr(E);
    816   Writer.AddStmt(E->getCond());
    817   Writer.AddStmt(E->getLHS());
    818   Writer.AddStmt(E->getRHS());
    819   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
    820   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    821   Record.push_back(E->isConditionDependent() ? false : E->isConditionTrue());
    822   Code = serialization::EXPR_CHOOSE;
    823 }
    824 
    825 void ASTStmtWriter::VisitGNUNullExpr(GNUNullExpr *E) {
    826   VisitExpr(E);
    827   Writer.AddSourceLocation(E->getTokenLocation(), Record);
    828   Code = serialization::EXPR_GNU_NULL;
    829 }
    830 
    831 void ASTStmtWriter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
    832   VisitExpr(E);
    833   Record.push_back(E->getNumSubExprs());
    834   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
    835     Writer.AddStmt(E->getExpr(I));
    836   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
    837   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    838   Code = serialization::EXPR_SHUFFLE_VECTOR;
    839 }
    840 
    841 void ASTStmtWriter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
    842   VisitExpr(E);
    843   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
    844   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    845   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
    846   Writer.AddStmt(E->getSrcExpr());
    847   Code = serialization::EXPR_CONVERT_VECTOR;
    848 }
    849 
    850 void ASTStmtWriter::VisitBlockExpr(BlockExpr *E) {
    851   VisitExpr(E);
    852   Writer.AddDeclRef(E->getBlockDecl(), Record);
    853   Code = serialization::EXPR_BLOCK;
    854 }
    855 
    856 void ASTStmtWriter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
    857   VisitExpr(E);
    858   Record.push_back(E->getNumAssocs());
    859 
    860   Writer.AddStmt(E->getControllingExpr());
    861   for (unsigned I = 0, N = E->getNumAssocs(); I != N; ++I) {
    862     Writer.AddTypeSourceInfo(E->getAssocTypeSourceInfo(I), Record);
    863     Writer.AddStmt(E->getAssocExpr(I));
    864   }
    865   Record.push_back(E->isResultDependent() ? -1U : E->getResultIndex());
    866 
    867   Writer.AddSourceLocation(E->getGenericLoc(), Record);
    868   Writer.AddSourceLocation(E->getDefaultLoc(), Record);
    869   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    870   Code = serialization::EXPR_GENERIC_SELECTION;
    871 }
    872 
    873 void ASTStmtWriter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
    874   VisitExpr(E);
    875   Record.push_back(E->getNumSemanticExprs());
    876 
    877   // Push the result index.  Currently, this needs to exactly match
    878   // the encoding used internally for ResultIndex.
    879   unsigned result = E->getResultExprIndex();
    880   result = (result == PseudoObjectExpr::NoResult ? 0 : result + 1);
    881   Record.push_back(result);
    882 
    883   Writer.AddStmt(E->getSyntacticForm());
    884   for (PseudoObjectExpr::semantics_iterator
    885          i = E->semantics_begin(), e = E->semantics_end(); i != e; ++i) {
    886     Writer.AddStmt(*i);
    887   }
    888   Code = serialization::EXPR_PSEUDO_OBJECT;
    889 }
    890 
    891 void ASTStmtWriter::VisitAtomicExpr(AtomicExpr *E) {
    892   VisitExpr(E);
    893   Record.push_back(E->getOp());
    894   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
    895     Writer.AddStmt(E->getSubExprs()[I]);
    896   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
    897   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    898   Code = serialization::EXPR_ATOMIC;
    899 }
    900 
    901 //===----------------------------------------------------------------------===//
    902 // Objective-C Expressions and Statements.
    903 //===----------------------------------------------------------------------===//
    904 
    905 void ASTStmtWriter::VisitObjCStringLiteral(ObjCStringLiteral *E) {
    906   VisitExpr(E);
    907   Writer.AddStmt(E->getString());
    908   Writer.AddSourceLocation(E->getAtLoc(), Record);
    909   Code = serialization::EXPR_OBJC_STRING_LITERAL;
    910 }
    911 
    912 void ASTStmtWriter::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
    913   VisitExpr(E);
    914   Writer.AddStmt(E->getSubExpr());
    915   Writer.AddDeclRef(E->getBoxingMethod(), Record);
    916   Writer.AddSourceRange(E->getSourceRange(), Record);
    917   Code = serialization::EXPR_OBJC_BOXED_EXPRESSION;
    918 }
    919 
    920 void ASTStmtWriter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
    921   VisitExpr(E);
    922   Record.push_back(E->getNumElements());
    923   for (unsigned i = 0; i < E->getNumElements(); i++)
    924     Writer.AddStmt(E->getElement(i));
    925   Writer.AddDeclRef(E->getArrayWithObjectsMethod(), Record);
    926   Writer.AddSourceRange(E->getSourceRange(), Record);
    927   Code = serialization::EXPR_OBJC_ARRAY_LITERAL;
    928 }
    929 
    930 void ASTStmtWriter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
    931   VisitExpr(E);
    932   Record.push_back(E->getNumElements());
    933   Record.push_back(E->HasPackExpansions);
    934   for (unsigned i = 0; i < E->getNumElements(); i++) {
    935     ObjCDictionaryElement Element = E->getKeyValueElement(i);
    936     Writer.AddStmt(Element.Key);
    937     Writer.AddStmt(Element.Value);
    938     if (E->HasPackExpansions) {
    939       Writer.AddSourceLocation(Element.EllipsisLoc, Record);
    940       unsigned NumExpansions = 0;
    941       if (Element.NumExpansions)
    942         NumExpansions = *Element.NumExpansions + 1;
    943       Record.push_back(NumExpansions);
    944     }
    945   }
    946 
    947   Writer.AddDeclRef(E->getDictWithObjectsMethod(), Record);
    948   Writer.AddSourceRange(E->getSourceRange(), Record);
    949   Code = serialization::EXPR_OBJC_DICTIONARY_LITERAL;
    950 }
    951 
    952 void ASTStmtWriter::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
    953   VisitExpr(E);
    954   Writer.AddTypeSourceInfo(E->getEncodedTypeSourceInfo(), Record);
    955   Writer.AddSourceLocation(E->getAtLoc(), Record);
    956   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    957   Code = serialization::EXPR_OBJC_ENCODE;
    958 }
    959 
    960 void ASTStmtWriter::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
    961   VisitExpr(E);
    962   Writer.AddSelectorRef(E->getSelector(), Record);
    963   Writer.AddSourceLocation(E->getAtLoc(), Record);
    964   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    965   Code = serialization::EXPR_OBJC_SELECTOR_EXPR;
    966 }
    967 
    968 void ASTStmtWriter::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
    969   VisitExpr(E);
    970   Writer.AddDeclRef(E->getProtocol(), Record);
    971   Writer.AddSourceLocation(E->getAtLoc(), Record);
    972   Writer.AddSourceLocation(E->ProtoLoc, Record);
    973   Writer.AddSourceLocation(E->getRParenLoc(), Record);
    974   Code = serialization::EXPR_OBJC_PROTOCOL_EXPR;
    975 }
    976 
    977 void ASTStmtWriter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
    978   VisitExpr(E);
    979   Writer.AddDeclRef(E->getDecl(), Record);
    980   Writer.AddSourceLocation(E->getLocation(), Record);
    981   Writer.AddSourceLocation(E->getOpLoc(), Record);
    982   Writer.AddStmt(E->getBase());
    983   Record.push_back(E->isArrow());
    984   Record.push_back(E->isFreeIvar());
    985   Code = serialization::EXPR_OBJC_IVAR_REF_EXPR;
    986 }
    987 
    988 void ASTStmtWriter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
    989   VisitExpr(E);
    990   Record.push_back(E->SetterAndMethodRefFlags.getInt());
    991   Record.push_back(E->isImplicitProperty());
    992   if (E->isImplicitProperty()) {
    993     Writer.AddDeclRef(E->getImplicitPropertyGetter(), Record);
    994     Writer.AddDeclRef(E->getImplicitPropertySetter(), Record);
    995   } else {
    996     Writer.AddDeclRef(E->getExplicitProperty(), Record);
    997   }
    998   Writer.AddSourceLocation(E->getLocation(), Record);
    999   Writer.AddSourceLocation(E->getReceiverLocation(), Record);
   1000   if (E->isObjectReceiver()) {
   1001     Record.push_back(0);
   1002     Writer.AddStmt(E->getBase());
   1003   } else if (E->isSuperReceiver()) {
   1004     Record.push_back(1);
   1005     Writer.AddTypeRef(E->getSuperReceiverType(), Record);
   1006   } else {
   1007     Record.push_back(2);
   1008     Writer.AddDeclRef(E->getClassReceiver(), Record);
   1009   }
   1010 
   1011   Code = serialization::EXPR_OBJC_PROPERTY_REF_EXPR;
   1012 }
   1013 
   1014 void ASTStmtWriter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
   1015   VisitExpr(E);
   1016   Writer.AddSourceLocation(E->getRBracket(), Record);
   1017   Writer.AddStmt(E->getBaseExpr());
   1018   Writer.AddStmt(E->getKeyExpr());
   1019   Writer.AddDeclRef(E->getAtIndexMethodDecl(), Record);
   1020   Writer.AddDeclRef(E->setAtIndexMethodDecl(), Record);
   1021 
   1022   Code = serialization::EXPR_OBJC_SUBSCRIPT_REF_EXPR;
   1023 }
   1024 
   1025 void ASTStmtWriter::VisitObjCMessageExpr(ObjCMessageExpr *E) {
   1026   VisitExpr(E);
   1027   Record.push_back(E->getNumArgs());
   1028   Record.push_back(E->getNumStoredSelLocs());
   1029   Record.push_back(E->SelLocsKind);
   1030   Record.push_back(E->isDelegateInitCall());
   1031   Record.push_back(E->IsImplicit);
   1032   Record.push_back((unsigned)E->getReceiverKind()); // FIXME: stable encoding
   1033   switch (E->getReceiverKind()) {
   1034   case ObjCMessageExpr::Instance:
   1035     Writer.AddStmt(E->getInstanceReceiver());
   1036     break;
   1037 
   1038   case ObjCMessageExpr::Class:
   1039     Writer.AddTypeSourceInfo(E->getClassReceiverTypeInfo(), Record);
   1040     break;
   1041 
   1042   case ObjCMessageExpr::SuperClass:
   1043   case ObjCMessageExpr::SuperInstance:
   1044     Writer.AddTypeRef(E->getSuperType(), Record);
   1045     Writer.AddSourceLocation(E->getSuperLoc(), Record);
   1046     break;
   1047   }
   1048 
   1049   if (E->getMethodDecl()) {
   1050     Record.push_back(1);
   1051     Writer.AddDeclRef(E->getMethodDecl(), Record);
   1052   } else {
   1053     Record.push_back(0);
   1054     Writer.AddSelectorRef(E->getSelector(), Record);
   1055   }
   1056 
   1057   Writer.AddSourceLocation(E->getLeftLoc(), Record);
   1058   Writer.AddSourceLocation(E->getRightLoc(), Record);
   1059 
   1060   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
   1061        Arg != ArgEnd; ++Arg)
   1062     Writer.AddStmt(*Arg);
   1063 
   1064   SourceLocation *Locs = E->getStoredSelLocs();
   1065   for (unsigned i = 0, e = E->getNumStoredSelLocs(); i != e; ++i)
   1066     Writer.AddSourceLocation(Locs[i], Record);
   1067 
   1068   Code = serialization::EXPR_OBJC_MESSAGE_EXPR;
   1069 }
   1070 
   1071 void ASTStmtWriter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
   1072   VisitStmt(S);
   1073   Writer.AddStmt(S->getElement());
   1074   Writer.AddStmt(S->getCollection());
   1075   Writer.AddStmt(S->getBody());
   1076   Writer.AddSourceLocation(S->getForLoc(), Record);
   1077   Writer.AddSourceLocation(S->getRParenLoc(), Record);
   1078   Code = serialization::STMT_OBJC_FOR_COLLECTION;
   1079 }
   1080 
   1081 void ASTStmtWriter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
   1082   Writer.AddStmt(S->getCatchBody());
   1083   Writer.AddDeclRef(S->getCatchParamDecl(), Record);
   1084   Writer.AddSourceLocation(S->getAtCatchLoc(), Record);
   1085   Writer.AddSourceLocation(S->getRParenLoc(), Record);
   1086   Code = serialization::STMT_OBJC_CATCH;
   1087 }
   1088 
   1089 void ASTStmtWriter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
   1090   Writer.AddStmt(S->getFinallyBody());
   1091   Writer.AddSourceLocation(S->getAtFinallyLoc(), Record);
   1092   Code = serialization::STMT_OBJC_FINALLY;
   1093 }
   1094 
   1095 void ASTStmtWriter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
   1096   Writer.AddStmt(S->getSubStmt());
   1097   Writer.AddSourceLocation(S->getAtLoc(), Record);
   1098   Code = serialization::STMT_OBJC_AUTORELEASE_POOL;
   1099 }
   1100 
   1101 void ASTStmtWriter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
   1102   Record.push_back(S->getNumCatchStmts());
   1103   Record.push_back(S->getFinallyStmt() != nullptr);
   1104   Writer.AddStmt(S->getTryBody());
   1105   for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
   1106     Writer.AddStmt(S->getCatchStmt(I));
   1107   if (S->getFinallyStmt())
   1108     Writer.AddStmt(S->getFinallyStmt());
   1109   Writer.AddSourceLocation(S->getAtTryLoc(), Record);
   1110   Code = serialization::STMT_OBJC_AT_TRY;
   1111 }
   1112 
   1113 void ASTStmtWriter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
   1114   Writer.AddStmt(S->getSynchExpr());
   1115   Writer.AddStmt(S->getSynchBody());
   1116   Writer.AddSourceLocation(S->getAtSynchronizedLoc(), Record);
   1117   Code = serialization::STMT_OBJC_AT_SYNCHRONIZED;
   1118 }
   1119 
   1120 void ASTStmtWriter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
   1121   Writer.AddStmt(S->getThrowExpr());
   1122   Writer.AddSourceLocation(S->getThrowLoc(), Record);
   1123   Code = serialization::STMT_OBJC_AT_THROW;
   1124 }
   1125 
   1126 void ASTStmtWriter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
   1127   VisitExpr(E);
   1128   Record.push_back(E->getValue());
   1129   Writer.AddSourceLocation(E->getLocation(), Record);
   1130   Code = serialization::EXPR_OBJC_BOOL_LITERAL;
   1131 }
   1132 
   1133 //===----------------------------------------------------------------------===//
   1134 // C++ Expressions and Statements.
   1135 //===----------------------------------------------------------------------===//
   1136 
   1137 void ASTStmtWriter::VisitCXXCatchStmt(CXXCatchStmt *S) {
   1138   VisitStmt(S);
   1139   Writer.AddSourceLocation(S->getCatchLoc(), Record);
   1140   Writer.AddDeclRef(S->getExceptionDecl(), Record);
   1141   Writer.AddStmt(S->getHandlerBlock());
   1142   Code = serialization::STMT_CXX_CATCH;
   1143 }
   1144 
   1145 void ASTStmtWriter::VisitCXXTryStmt(CXXTryStmt *S) {
   1146   VisitStmt(S);
   1147   Record.push_back(S->getNumHandlers());
   1148   Writer.AddSourceLocation(S->getTryLoc(), Record);
   1149   Writer.AddStmt(S->getTryBlock());
   1150   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
   1151     Writer.AddStmt(S->getHandler(i));
   1152   Code = serialization::STMT_CXX_TRY;
   1153 }
   1154 
   1155 void ASTStmtWriter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
   1156   VisitStmt(S);
   1157   Writer.AddSourceLocation(S->getForLoc(), Record);
   1158   Writer.AddSourceLocation(S->getCoawaitLoc(), Record);
   1159   Writer.AddSourceLocation(S->getColonLoc(), Record);
   1160   Writer.AddSourceLocation(S->getRParenLoc(), Record);
   1161   Writer.AddStmt(S->getRangeStmt());
   1162   Writer.AddStmt(S->getBeginEndStmt());
   1163   Writer.AddStmt(S->getCond());
   1164   Writer.AddStmt(S->getInc());
   1165   Writer.AddStmt(S->getLoopVarStmt());
   1166   Writer.AddStmt(S->getBody());
   1167   Code = serialization::STMT_CXX_FOR_RANGE;
   1168 }
   1169 
   1170 void ASTStmtWriter::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
   1171   VisitStmt(S);
   1172   Writer.AddSourceLocation(S->getKeywordLoc(), Record);
   1173   Record.push_back(S->isIfExists());
   1174   Writer.AddNestedNameSpecifierLoc(S->getQualifierLoc(), Record);
   1175   Writer.AddDeclarationNameInfo(S->getNameInfo(), Record);
   1176   Writer.AddStmt(S->getSubStmt());
   1177   Code = serialization::STMT_MS_DEPENDENT_EXISTS;
   1178 }
   1179 
   1180 void ASTStmtWriter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
   1181   VisitCallExpr(E);
   1182   Record.push_back(E->getOperator());
   1183   Writer.AddSourceRange(E->Range, Record);
   1184   Record.push_back(E->isFPContractable());
   1185   Code = serialization::EXPR_CXX_OPERATOR_CALL;
   1186 }
   1187 
   1188 void ASTStmtWriter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
   1189   VisitCallExpr(E);
   1190   Code = serialization::EXPR_CXX_MEMBER_CALL;
   1191 }
   1192 
   1193 void ASTStmtWriter::VisitCXXConstructExpr(CXXConstructExpr *E) {
   1194   VisitExpr(E);
   1195   Record.push_back(E->getNumArgs());
   1196   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
   1197     Writer.AddStmt(E->getArg(I));
   1198   Writer.AddDeclRef(E->getConstructor(), Record);
   1199   Writer.AddSourceLocation(E->getLocation(), Record);
   1200   Record.push_back(E->isElidable());
   1201   Record.push_back(E->hadMultipleCandidates());
   1202   Record.push_back(E->isListInitialization());
   1203   Record.push_back(E->isStdInitListInitialization());
   1204   Record.push_back(E->requiresZeroInitialization());
   1205   Record.push_back(E->getConstructionKind()); // FIXME: stable encoding
   1206   Writer.AddSourceRange(E->getParenOrBraceRange(), Record);
   1207   Code = serialization::EXPR_CXX_CONSTRUCT;
   1208 }
   1209 
   1210 void ASTStmtWriter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
   1211   VisitCXXConstructExpr(E);
   1212   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
   1213   Code = serialization::EXPR_CXX_TEMPORARY_OBJECT;
   1214 }
   1215 
   1216 void ASTStmtWriter::VisitLambdaExpr(LambdaExpr *E) {
   1217   VisitExpr(E);
   1218   Record.push_back(E->NumCaptures);
   1219   unsigned NumArrayIndexVars = 0;
   1220   if (E->HasArrayIndexVars)
   1221     NumArrayIndexVars = E->getArrayIndexStarts()[E->NumCaptures];
   1222   Record.push_back(NumArrayIndexVars);
   1223   Writer.AddSourceRange(E->IntroducerRange, Record);
   1224   Record.push_back(E->CaptureDefault); // FIXME: stable encoding
   1225   Writer.AddSourceLocation(E->CaptureDefaultLoc, Record);
   1226   Record.push_back(E->ExplicitParams);
   1227   Record.push_back(E->ExplicitResultType);
   1228   Writer.AddSourceLocation(E->ClosingBrace, Record);
   1229 
   1230   // Add capture initializers.
   1231   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
   1232                                       CEnd = E->capture_init_end();
   1233        C != CEnd; ++C) {
   1234     Writer.AddStmt(*C);
   1235   }
   1236 
   1237   // Add array index variables, if any.
   1238   if (NumArrayIndexVars) {
   1239     Record.append(E->getArrayIndexStarts(),
   1240                   E->getArrayIndexStarts() + E->NumCaptures + 1);
   1241     VarDecl **ArrayIndexVars = E->getArrayIndexVars();
   1242     for (unsigned I = 0; I != NumArrayIndexVars; ++I)
   1243       Writer.AddDeclRef(ArrayIndexVars[I], Record);
   1244   }
   1245 
   1246   Code = serialization::EXPR_LAMBDA;
   1247 }
   1248 
   1249 void ASTStmtWriter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
   1250   VisitExpr(E);
   1251   Writer.AddStmt(E->getSubExpr());
   1252   Code = serialization::EXPR_CXX_STD_INITIALIZER_LIST;
   1253 }
   1254 
   1255 void ASTStmtWriter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
   1256   VisitExplicitCastExpr(E);
   1257   Writer.AddSourceRange(SourceRange(E->getOperatorLoc(), E->getRParenLoc()),
   1258                         Record);
   1259   Writer.AddSourceRange(E->getAngleBrackets(), Record);
   1260 }
   1261 
   1262 void ASTStmtWriter::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
   1263   VisitCXXNamedCastExpr(E);
   1264   Code = serialization::EXPR_CXX_STATIC_CAST;
   1265 }
   1266 
   1267 void ASTStmtWriter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
   1268   VisitCXXNamedCastExpr(E);
   1269   Code = serialization::EXPR_CXX_DYNAMIC_CAST;
   1270 }
   1271 
   1272 void ASTStmtWriter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
   1273   VisitCXXNamedCastExpr(E);
   1274   Code = serialization::EXPR_CXX_REINTERPRET_CAST;
   1275 }
   1276 
   1277 void ASTStmtWriter::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
   1278   VisitCXXNamedCastExpr(E);
   1279   Code = serialization::EXPR_CXX_CONST_CAST;
   1280 }
   1281 
   1282 void ASTStmtWriter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
   1283   VisitExplicitCastExpr(E);
   1284   Writer.AddSourceLocation(E->getLParenLoc(), Record);
   1285   Writer.AddSourceLocation(E->getRParenLoc(), Record);
   1286   Code = serialization::EXPR_CXX_FUNCTIONAL_CAST;
   1287 }
   1288 
   1289 void ASTStmtWriter::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
   1290   VisitCallExpr(E);
   1291   Writer.AddSourceLocation(E->UDSuffixLoc, Record);
   1292   Code = serialization::EXPR_USER_DEFINED_LITERAL;
   1293 }
   1294 
   1295 void ASTStmtWriter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
   1296   VisitExpr(E);
   1297   Record.push_back(E->getValue());
   1298   Writer.AddSourceLocation(E->getLocation(), Record);
   1299   Code = serialization::EXPR_CXX_BOOL_LITERAL;
   1300 }
   1301 
   1302 void ASTStmtWriter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
   1303   VisitExpr(E);
   1304   Writer.AddSourceLocation(E->getLocation(), Record);
   1305   Code = serialization::EXPR_CXX_NULL_PTR_LITERAL;
   1306 }
   1307 
   1308 void ASTStmtWriter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
   1309   VisitExpr(E);
   1310   Writer.AddSourceRange(E->getSourceRange(), Record);
   1311   if (E->isTypeOperand()) {
   1312     Writer.AddTypeSourceInfo(E->getTypeOperandSourceInfo(), Record);
   1313     Code = serialization::EXPR_CXX_TYPEID_TYPE;
   1314   } else {
   1315     Writer.AddStmt(E->getExprOperand());
   1316     Code = serialization::EXPR_CXX_TYPEID_EXPR;
   1317   }
   1318 }
   1319 
   1320 void ASTStmtWriter::VisitCXXThisExpr(CXXThisExpr *E) {
   1321   VisitExpr(E);
   1322   Writer.AddSourceLocation(E->getLocation(), Record);
   1323   Record.push_back(E->isImplicit());
   1324   Code = serialization::EXPR_CXX_THIS;
   1325 }
   1326 
   1327 void ASTStmtWriter::VisitCXXThrowExpr(CXXThrowExpr *E) {
   1328   VisitExpr(E);
   1329   Writer.AddSourceLocation(E->getThrowLoc(), Record);
   1330   Writer.AddStmt(E->getSubExpr());
   1331   Record.push_back(E->isThrownVariableInScope());
   1332   Code = serialization::EXPR_CXX_THROW;
   1333 }
   1334 
   1335 void ASTStmtWriter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
   1336   VisitExpr(E);
   1337 
   1338   bool HasOtherExprStored = E->Param.getInt();
   1339   // Store these first, the reader reads them before creation.
   1340   Record.push_back(HasOtherExprStored);
   1341   if (HasOtherExprStored)
   1342     Writer.AddStmt(E->getExpr());
   1343   Writer.AddDeclRef(E->getParam(), Record);
   1344   Writer.AddSourceLocation(E->getUsedLocation(), Record);
   1345 
   1346   Code = serialization::EXPR_CXX_DEFAULT_ARG;
   1347 }
   1348 
   1349 void ASTStmtWriter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
   1350   VisitExpr(E);
   1351   Writer.AddDeclRef(E->getField(), Record);
   1352   Writer.AddSourceLocation(E->getExprLoc(), Record);
   1353   Code = serialization::EXPR_CXX_DEFAULT_INIT;
   1354 }
   1355 
   1356 void ASTStmtWriter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
   1357   VisitExpr(E);
   1358   Writer.AddCXXTemporary(E->getTemporary(), Record);
   1359   Writer.AddStmt(E->getSubExpr());
   1360   Code = serialization::EXPR_CXX_BIND_TEMPORARY;
   1361 }
   1362 
   1363 void ASTStmtWriter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
   1364   VisitExpr(E);
   1365   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
   1366   Writer.AddSourceLocation(E->getRParenLoc(), Record);
   1367   Code = serialization::EXPR_CXX_SCALAR_VALUE_INIT;
   1368 }
   1369 
   1370 void ASTStmtWriter::VisitCXXNewExpr(CXXNewExpr *E) {
   1371   VisitExpr(E);
   1372   Record.push_back(E->isGlobalNew());
   1373   Record.push_back(E->isArray());
   1374   Record.push_back(E->doesUsualArrayDeleteWantSize());
   1375   Record.push_back(E->getNumPlacementArgs());
   1376   Record.push_back(E->StoredInitializationStyle);
   1377   Writer.AddDeclRef(E->getOperatorNew(), Record);
   1378   Writer.AddDeclRef(E->getOperatorDelete(), Record);
   1379   Writer.AddTypeSourceInfo(E->getAllocatedTypeSourceInfo(), Record);
   1380   Writer.AddSourceRange(E->getTypeIdParens(), Record);
   1381   Writer.AddSourceRange(E->getSourceRange(), Record);
   1382   Writer.AddSourceRange(E->getDirectInitRange(), Record);
   1383   for (CXXNewExpr::arg_iterator I = E->raw_arg_begin(), e = E->raw_arg_end();
   1384        I != e; ++I)
   1385     Writer.AddStmt(*I);
   1386 
   1387   Code = serialization::EXPR_CXX_NEW;
   1388 }
   1389 
   1390 void ASTStmtWriter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
   1391   VisitExpr(E);
   1392   Record.push_back(E->isGlobalDelete());
   1393   Record.push_back(E->isArrayForm());
   1394   Record.push_back(E->isArrayFormAsWritten());
   1395   Record.push_back(E->doesUsualArrayDeleteWantSize());
   1396   Writer.AddDeclRef(E->getOperatorDelete(), Record);
   1397   Writer.AddStmt(E->getArgument());
   1398   Writer.AddSourceLocation(E->getSourceRange().getBegin(), Record);
   1399 
   1400   Code = serialization::EXPR_CXX_DELETE;
   1401 }
   1402 
   1403 void ASTStmtWriter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
   1404   VisitExpr(E);
   1405 
   1406   Writer.AddStmt(E->getBase());
   1407   Record.push_back(E->isArrow());
   1408   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
   1409   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
   1410   Writer.AddTypeSourceInfo(E->getScopeTypeInfo(), Record);
   1411   Writer.AddSourceLocation(E->getColonColonLoc(), Record);
   1412   Writer.AddSourceLocation(E->getTildeLoc(), Record);
   1413 
   1414   // PseudoDestructorTypeStorage.
   1415   Writer.AddIdentifierRef(E->getDestroyedTypeIdentifier(), Record);
   1416   if (E->getDestroyedTypeIdentifier())
   1417     Writer.AddSourceLocation(E->getDestroyedTypeLoc(), Record);
   1418   else
   1419     Writer.AddTypeSourceInfo(E->getDestroyedTypeInfo(), Record);
   1420 
   1421   Code = serialization::EXPR_CXX_PSEUDO_DESTRUCTOR;
   1422 }
   1423 
   1424 void ASTStmtWriter::VisitExprWithCleanups(ExprWithCleanups *E) {
   1425   VisitExpr(E);
   1426   Record.push_back(E->getNumObjects());
   1427   for (unsigned i = 0, e = E->getNumObjects(); i != e; ++i)
   1428     Writer.AddDeclRef(E->getObject(i), Record);
   1429 
   1430   Writer.AddStmt(E->getSubExpr());
   1431   Code = serialization::EXPR_EXPR_WITH_CLEANUPS;
   1432 }
   1433 
   1434 void
   1435 ASTStmtWriter::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E){
   1436   VisitExpr(E);
   1437 
   1438   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
   1439   // emitted first.
   1440 
   1441   Record.push_back(E->HasTemplateKWAndArgsInfo);
   1442   if (E->HasTemplateKWAndArgsInfo) {
   1443     const ASTTemplateKWAndArgsInfo &Args = *E->getTemplateKWAndArgsInfo();
   1444     Record.push_back(Args.NumTemplateArgs);
   1445     AddTemplateKWAndArgsInfo(Args);
   1446   }
   1447 
   1448   if (!E->isImplicitAccess())
   1449     Writer.AddStmt(E->getBase());
   1450   else
   1451     Writer.AddStmt(nullptr);
   1452   Writer.AddTypeRef(E->getBaseType(), Record);
   1453   Record.push_back(E->isArrow());
   1454   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
   1455   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
   1456   Writer.AddDeclRef(E->getFirstQualifierFoundInScope(), Record);
   1457   Writer.AddDeclarationNameInfo(E->MemberNameInfo, Record);
   1458   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_MEMBER;
   1459 }
   1460 
   1461 void
   1462 ASTStmtWriter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
   1463   VisitExpr(E);
   1464 
   1465   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
   1466   // emitted first.
   1467 
   1468   Record.push_back(E->HasTemplateKWAndArgsInfo);
   1469   if (E->HasTemplateKWAndArgsInfo) {
   1470     const ASTTemplateKWAndArgsInfo &Args = *E->getTemplateKWAndArgsInfo();
   1471     Record.push_back(Args.NumTemplateArgs);
   1472     AddTemplateKWAndArgsInfo(Args);
   1473   }
   1474 
   1475   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
   1476   Writer.AddDeclarationNameInfo(E->NameInfo, Record);
   1477   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_DECL_REF;
   1478 }
   1479 
   1480 void
   1481 ASTStmtWriter::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
   1482   VisitExpr(E);
   1483   Record.push_back(E->arg_size());
   1484   for (CXXUnresolvedConstructExpr::arg_iterator
   1485          ArgI = E->arg_begin(), ArgE = E->arg_end(); ArgI != ArgE; ++ArgI)
   1486     Writer.AddStmt(*ArgI);
   1487   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
   1488   Writer.AddSourceLocation(E->getLParenLoc(), Record);
   1489   Writer.AddSourceLocation(E->getRParenLoc(), Record);
   1490   Code = serialization::EXPR_CXX_UNRESOLVED_CONSTRUCT;
   1491 }
   1492 
   1493 void ASTStmtWriter::VisitOverloadExpr(OverloadExpr *E) {
   1494   VisitExpr(E);
   1495 
   1496   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
   1497   // emitted first.
   1498 
   1499   Record.push_back(E->HasTemplateKWAndArgsInfo);
   1500   if (E->HasTemplateKWAndArgsInfo) {
   1501     const ASTTemplateKWAndArgsInfo &Args = *E->getTemplateKWAndArgsInfo();
   1502     Record.push_back(Args.NumTemplateArgs);
   1503     AddTemplateKWAndArgsInfo(Args);
   1504   }
   1505 
   1506   Record.push_back(E->getNumDecls());
   1507   for (OverloadExpr::decls_iterator
   1508          OvI = E->decls_begin(), OvE = E->decls_end(); OvI != OvE; ++OvI) {
   1509     Writer.AddDeclRef(OvI.getDecl(), Record);
   1510     Record.push_back(OvI.getAccess());
   1511   }
   1512 
   1513   Writer.AddDeclarationNameInfo(E->NameInfo, Record);
   1514   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
   1515 }
   1516 
   1517 void ASTStmtWriter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
   1518   VisitOverloadExpr(E);
   1519   Record.push_back(E->isArrow());
   1520   Record.push_back(E->hasUnresolvedUsing());
   1521   Writer.AddStmt(!E->isImplicitAccess() ? E->getBase() : nullptr);
   1522   Writer.AddTypeRef(E->getBaseType(), Record);
   1523   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
   1524   Code = serialization::EXPR_CXX_UNRESOLVED_MEMBER;
   1525 }
   1526 
   1527 void ASTStmtWriter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
   1528   VisitOverloadExpr(E);
   1529   Record.push_back(E->requiresADL());
   1530   Record.push_back(E->isOverloaded());
   1531   Writer.AddDeclRef(E->getNamingClass(), Record);
   1532   Code = serialization::EXPR_CXX_UNRESOLVED_LOOKUP;
   1533 }
   1534 
   1535 void ASTStmtWriter::VisitTypeTraitExpr(TypeTraitExpr *E) {
   1536   VisitExpr(E);
   1537   Record.push_back(E->TypeTraitExprBits.NumArgs);
   1538   Record.push_back(E->TypeTraitExprBits.Kind); // FIXME: Stable encoding
   1539   Record.push_back(E->TypeTraitExprBits.Value);
   1540   Writer.AddSourceRange(E->getSourceRange(), Record);
   1541   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
   1542     Writer.AddTypeSourceInfo(E->getArg(I), Record);
   1543   Code = serialization::EXPR_TYPE_TRAIT;
   1544 }
   1545 
   1546 void ASTStmtWriter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
   1547   VisitExpr(E);
   1548   Record.push_back(E->getTrait());
   1549   Record.push_back(E->getValue());
   1550   Writer.AddSourceRange(E->getSourceRange(), Record);
   1551   Writer.AddTypeSourceInfo(E->getQueriedTypeSourceInfo(), Record);
   1552   Code = serialization::EXPR_ARRAY_TYPE_TRAIT;
   1553 }
   1554 
   1555 void ASTStmtWriter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
   1556   VisitExpr(E);
   1557   Record.push_back(E->getTrait());
   1558   Record.push_back(E->getValue());
   1559   Writer.AddSourceRange(E->getSourceRange(), Record);
   1560   Writer.AddStmt(E->getQueriedExpression());
   1561   Code = serialization::EXPR_CXX_EXPRESSION_TRAIT;
   1562 }
   1563 
   1564 void ASTStmtWriter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
   1565   VisitExpr(E);
   1566   Record.push_back(E->getValue());
   1567   Writer.AddSourceRange(E->getSourceRange(), Record);
   1568   Writer.AddStmt(E->getOperand());
   1569   Code = serialization::EXPR_CXX_NOEXCEPT;
   1570 }
   1571 
   1572 void ASTStmtWriter::VisitPackExpansionExpr(PackExpansionExpr *E) {
   1573   VisitExpr(E);
   1574   Writer.AddSourceLocation(E->getEllipsisLoc(), Record);
   1575   Record.push_back(E->NumExpansions);
   1576   Writer.AddStmt(E->getPattern());
   1577   Code = serialization::EXPR_PACK_EXPANSION;
   1578 }
   1579 
   1580 void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
   1581   VisitExpr(E);
   1582   Record.push_back(E->isPartiallySubstituted() ? E->getPartialArguments().size()
   1583                                                : 0);
   1584   Writer.AddSourceLocation(E->OperatorLoc, Record);
   1585   Writer.AddSourceLocation(E->PackLoc, Record);
   1586   Writer.AddSourceLocation(E->RParenLoc, Record);
   1587   Writer.AddDeclRef(E->Pack, Record);
   1588   if (E->isPartiallySubstituted()) {
   1589     for (const auto &TA : E->getPartialArguments())
   1590       Writer.AddTemplateArgument(TA, Record);
   1591   } else if (!E->isValueDependent()) {
   1592     Record.push_back(E->getPackLength());
   1593   }
   1594   Code = serialization::EXPR_SIZEOF_PACK;
   1595 }
   1596 
   1597 void ASTStmtWriter::VisitSubstNonTypeTemplateParmExpr(
   1598                                               SubstNonTypeTemplateParmExpr *E) {
   1599   VisitExpr(E);
   1600   Writer.AddDeclRef(E->getParameter(), Record);
   1601   Writer.AddSourceLocation(E->getNameLoc(), Record);
   1602   Writer.AddStmt(E->getReplacement());
   1603   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM;
   1604 }
   1605 
   1606 void ASTStmtWriter::VisitSubstNonTypeTemplateParmPackExpr(
   1607                                           SubstNonTypeTemplateParmPackExpr *E) {
   1608   VisitExpr(E);
   1609   Writer.AddDeclRef(E->getParameterPack(), Record);
   1610   Writer.AddTemplateArgument(E->getArgumentPack(), Record);
   1611   Writer.AddSourceLocation(E->getParameterPackLocation(), Record);
   1612   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK;
   1613 }
   1614 
   1615 void ASTStmtWriter::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
   1616   VisitExpr(E);
   1617   Record.push_back(E->getNumExpansions());
   1618   Writer.AddDeclRef(E->getParameterPack(), Record);
   1619   Writer.AddSourceLocation(E->getParameterPackLocation(), Record);
   1620   for (FunctionParmPackExpr::iterator I = E->begin(), End = E->end();
   1621        I != End; ++I)
   1622     Writer.AddDeclRef(*I, Record);
   1623   Code = serialization::EXPR_FUNCTION_PARM_PACK;
   1624 }
   1625 
   1626 void ASTStmtWriter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
   1627   VisitExpr(E);
   1628   Writer.AddStmt(E->getTemporary());
   1629   Writer.AddDeclRef(E->getExtendingDecl(), Record);
   1630   Record.push_back(E->getManglingNumber());
   1631   Code = serialization::EXPR_MATERIALIZE_TEMPORARY;
   1632 }
   1633 
   1634 void ASTStmtWriter::VisitCXXFoldExpr(CXXFoldExpr *E) {
   1635   VisitExpr(E);
   1636   Writer.AddSourceLocation(E->LParenLoc, Record);
   1637   Writer.AddSourceLocation(E->EllipsisLoc, Record);
   1638   Writer.AddSourceLocation(E->RParenLoc, Record);
   1639   Writer.AddStmt(E->SubExprs[0]);
   1640   Writer.AddStmt(E->SubExprs[1]);
   1641   Record.push_back(E->Opcode);
   1642   Code = serialization::EXPR_CXX_FOLD;
   1643 }
   1644 
   1645 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
   1646   VisitExpr(E);
   1647   Writer.AddStmt(E->getSourceExpr());
   1648   Writer.AddSourceLocation(E->getLocation(), Record);
   1649   Code = serialization::EXPR_OPAQUE_VALUE;
   1650 }
   1651 
   1652 void ASTStmtWriter::VisitTypoExpr(TypoExpr *E) {
   1653   VisitExpr(E);
   1654   // TODO: Figure out sane writer behavior for a TypoExpr, if necessary
   1655   assert(false && "Cannot write TypoExpr nodes");
   1656 }
   1657 
   1658 //===----------------------------------------------------------------------===//
   1659 // CUDA Expressions and Statements.
   1660 //===----------------------------------------------------------------------===//
   1661 
   1662 void ASTStmtWriter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
   1663   VisitCallExpr(E);
   1664   Writer.AddStmt(E->getConfig());
   1665   Code = serialization::EXPR_CUDA_KERNEL_CALL;
   1666 }
   1667 
   1668 //===----------------------------------------------------------------------===//
   1669 // OpenCL Expressions and Statements.
   1670 //===----------------------------------------------------------------------===//
   1671 void ASTStmtWriter::VisitAsTypeExpr(AsTypeExpr *E) {
   1672   VisitExpr(E);
   1673   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
   1674   Writer.AddSourceLocation(E->getRParenLoc(), Record);
   1675   Writer.AddStmt(E->getSrcExpr());
   1676   Code = serialization::EXPR_ASTYPE;
   1677 }
   1678 
   1679 //===----------------------------------------------------------------------===//
   1680 // Microsoft Expressions and Statements.
   1681 //===----------------------------------------------------------------------===//
   1682 void ASTStmtWriter::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
   1683   VisitExpr(E);
   1684   Record.push_back(E->isArrow());
   1685   Writer.AddStmt(E->getBaseExpr());
   1686   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
   1687   Writer.AddSourceLocation(E->getMemberLoc(), Record);
   1688   Writer.AddDeclRef(E->getPropertyDecl(), Record);
   1689   Code = serialization::EXPR_CXX_PROPERTY_REF_EXPR;
   1690 }
   1691 
   1692 void ASTStmtWriter::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
   1693   VisitExpr(E);
   1694   Writer.AddStmt(E->getBase());
   1695   Writer.AddStmt(E->getIdx());
   1696   Writer.AddSourceLocation(E->getRBracketLoc(), Record);
   1697   Code = serialization::EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR;
   1698 }
   1699 
   1700 void ASTStmtWriter::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
   1701   VisitExpr(E);
   1702   Writer.AddSourceRange(E->getSourceRange(), Record);
   1703   if (E->isTypeOperand()) {
   1704     Writer.AddTypeSourceInfo(E->getTypeOperandSourceInfo(), Record);
   1705     Code = serialization::EXPR_CXX_UUIDOF_TYPE;
   1706   } else {
   1707     Writer.AddStmt(E->getExprOperand());
   1708     Code = serialization::EXPR_CXX_UUIDOF_EXPR;
   1709   }
   1710 }
   1711 
   1712 void ASTStmtWriter::VisitSEHExceptStmt(SEHExceptStmt *S) {
   1713   VisitStmt(S);
   1714   Writer.AddSourceLocation(S->getExceptLoc(), Record);
   1715   Writer.AddStmt(S->getFilterExpr());
   1716   Writer.AddStmt(S->getBlock());
   1717   Code = serialization::STMT_SEH_EXCEPT;
   1718 }
   1719 
   1720 void ASTStmtWriter::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
   1721   VisitStmt(S);
   1722   Writer.AddSourceLocation(S->getFinallyLoc(), Record);
   1723   Writer.AddStmt(S->getBlock());
   1724   Code = serialization::STMT_SEH_FINALLY;
   1725 }
   1726 
   1727 void ASTStmtWriter::VisitSEHTryStmt(SEHTryStmt *S) {
   1728   VisitStmt(S);
   1729   Record.push_back(S->getIsCXXTry());
   1730   Writer.AddSourceLocation(S->getTryLoc(), Record);
   1731   Writer.AddStmt(S->getTryBlock());
   1732   Writer.AddStmt(S->getHandler());
   1733   Code = serialization::STMT_SEH_TRY;
   1734 }
   1735 
   1736 void ASTStmtWriter::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
   1737   VisitStmt(S);
   1738   Writer.AddSourceLocation(S->getLeaveLoc(), Record);
   1739   Code = serialization::STMT_SEH_LEAVE;
   1740 }
   1741 
   1742 //===----------------------------------------------------------------------===//
   1743 // OpenMP Clauses.
   1744 //===----------------------------------------------------------------------===//
   1745 
   1746 namespace clang {
   1747 class OMPClauseWriter : public OMPClauseVisitor<OMPClauseWriter> {
   1748   ASTStmtWriter *Writer;
   1749   ASTWriter::RecordData &Record;
   1750 public:
   1751   OMPClauseWriter(ASTStmtWriter *W, ASTWriter::RecordData &Record)
   1752     : Writer(W), Record(Record) { }
   1753 #define OPENMP_CLAUSE(Name, Class)    \
   1754   void Visit##Class(Class *S);
   1755 #include "clang/Basic/OpenMPKinds.def"
   1756   void writeClause(OMPClause *C);
   1757 };
   1758 }
   1759 
   1760 void OMPClauseWriter::writeClause(OMPClause *C) {
   1761   Record.push_back(C->getClauseKind());
   1762   Visit(C);
   1763   Writer->Writer.AddSourceLocation(C->getLocStart(), Record);
   1764   Writer->Writer.AddSourceLocation(C->getLocEnd(), Record);
   1765 }
   1766 
   1767 void OMPClauseWriter::VisitOMPIfClause(OMPIfClause *C) {
   1768   Record.push_back(C->getNameModifier());
   1769   Writer->Writer.AddSourceLocation(C->getNameModifierLoc(), Record);
   1770   Writer->Writer.AddSourceLocation(C->getColonLoc(), Record);
   1771   Writer->Writer.AddStmt(C->getCondition());
   1772   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1773 }
   1774 
   1775 void OMPClauseWriter::VisitOMPFinalClause(OMPFinalClause *C) {
   1776   Writer->Writer.AddStmt(C->getCondition());
   1777   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1778 }
   1779 
   1780 void OMPClauseWriter::VisitOMPNumThreadsClause(OMPNumThreadsClause *C) {
   1781   Writer->Writer.AddStmt(C->getNumThreads());
   1782   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1783 }
   1784 
   1785 void OMPClauseWriter::VisitOMPSafelenClause(OMPSafelenClause *C) {
   1786   Writer->Writer.AddStmt(C->getSafelen());
   1787   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1788 }
   1789 
   1790 void OMPClauseWriter::VisitOMPSimdlenClause(OMPSimdlenClause *C) {
   1791   Writer->Writer.AddStmt(C->getSimdlen());
   1792   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1793 }
   1794 
   1795 void OMPClauseWriter::VisitOMPCollapseClause(OMPCollapseClause *C) {
   1796   Writer->Writer.AddStmt(C->getNumForLoops());
   1797   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1798 }
   1799 
   1800 void OMPClauseWriter::VisitOMPDefaultClause(OMPDefaultClause *C) {
   1801   Record.push_back(C->getDefaultKind());
   1802   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1803   Writer->Writer.AddSourceLocation(C->getDefaultKindKwLoc(), Record);
   1804 }
   1805 
   1806 void OMPClauseWriter::VisitOMPProcBindClause(OMPProcBindClause *C) {
   1807   Record.push_back(C->getProcBindKind());
   1808   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1809   Writer->Writer.AddSourceLocation(C->getProcBindKindKwLoc(), Record);
   1810 }
   1811 
   1812 void OMPClauseWriter::VisitOMPScheduleClause(OMPScheduleClause *C) {
   1813   Record.push_back(C->getScheduleKind());
   1814   Writer->Writer.AddStmt(C->getChunkSize());
   1815   Writer->Writer.AddStmt(C->getHelperChunkSize());
   1816   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1817   Writer->Writer.AddSourceLocation(C->getScheduleKindLoc(), Record);
   1818   Writer->Writer.AddSourceLocation(C->getCommaLoc(), Record);
   1819 }
   1820 
   1821 void OMPClauseWriter::VisitOMPOrderedClause(OMPOrderedClause *C) {
   1822   Writer->Writer.AddStmt(C->getNumForLoops());
   1823   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1824 }
   1825 
   1826 void OMPClauseWriter::VisitOMPNowaitClause(OMPNowaitClause *) {}
   1827 
   1828 void OMPClauseWriter::VisitOMPUntiedClause(OMPUntiedClause *) {}
   1829 
   1830 void OMPClauseWriter::VisitOMPMergeableClause(OMPMergeableClause *) {}
   1831 
   1832 void OMPClauseWriter::VisitOMPReadClause(OMPReadClause *) {}
   1833 
   1834 void OMPClauseWriter::VisitOMPWriteClause(OMPWriteClause *) {}
   1835 
   1836 void OMPClauseWriter::VisitOMPUpdateClause(OMPUpdateClause *) {}
   1837 
   1838 void OMPClauseWriter::VisitOMPCaptureClause(OMPCaptureClause *) {}
   1839 
   1840 void OMPClauseWriter::VisitOMPSeqCstClause(OMPSeqCstClause *) {}
   1841 
   1842 void OMPClauseWriter::VisitOMPThreadsClause(OMPThreadsClause *) {}
   1843 
   1844 void OMPClauseWriter::VisitOMPSIMDClause(OMPSIMDClause *) {}
   1845 
   1846 void OMPClauseWriter::VisitOMPNogroupClause(OMPNogroupClause *) {}
   1847 
   1848 void OMPClauseWriter::VisitOMPPrivateClause(OMPPrivateClause *C) {
   1849   Record.push_back(C->varlist_size());
   1850   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1851   for (auto *VE : C->varlists()) {
   1852     Writer->Writer.AddStmt(VE);
   1853   }
   1854   for (auto *VE : C->private_copies()) {
   1855     Writer->Writer.AddStmt(VE);
   1856   }
   1857 }
   1858 
   1859 void OMPClauseWriter::VisitOMPFirstprivateClause(OMPFirstprivateClause *C) {
   1860   Record.push_back(C->varlist_size());
   1861   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1862   for (auto *VE : C->varlists()) {
   1863     Writer->Writer.AddStmt(VE);
   1864   }
   1865   for (auto *VE : C->private_copies()) {
   1866     Writer->Writer.AddStmt(VE);
   1867   }
   1868   for (auto *VE : C->inits()) {
   1869     Writer->Writer.AddStmt(VE);
   1870   }
   1871 }
   1872 
   1873 void OMPClauseWriter::VisitOMPLastprivateClause(OMPLastprivateClause *C) {
   1874   Record.push_back(C->varlist_size());
   1875   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1876   for (auto *VE : C->varlists())
   1877     Writer->Writer.AddStmt(VE);
   1878   for (auto *E : C->private_copies())
   1879     Writer->Writer.AddStmt(E);
   1880   for (auto *E : C->source_exprs())
   1881     Writer->Writer.AddStmt(E);
   1882   for (auto *E : C->destination_exprs())
   1883     Writer->Writer.AddStmt(E);
   1884   for (auto *E : C->assignment_ops())
   1885     Writer->Writer.AddStmt(E);
   1886 }
   1887 
   1888 void OMPClauseWriter::VisitOMPSharedClause(OMPSharedClause *C) {
   1889   Record.push_back(C->varlist_size());
   1890   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1891   for (auto *VE : C->varlists())
   1892     Writer->Writer.AddStmt(VE);
   1893 }
   1894 
   1895 void OMPClauseWriter::VisitOMPReductionClause(OMPReductionClause *C) {
   1896   Record.push_back(C->varlist_size());
   1897   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1898   Writer->Writer.AddSourceLocation(C->getColonLoc(), Record);
   1899   Writer->Writer.AddNestedNameSpecifierLoc(C->getQualifierLoc(), Record);
   1900   Writer->Writer.AddDeclarationNameInfo(C->getNameInfo(), Record);
   1901   for (auto *VE : C->varlists())
   1902     Writer->Writer.AddStmt(VE);
   1903   for (auto *VE : C->privates())
   1904     Writer->Writer.AddStmt(VE);
   1905   for (auto *E : C->lhs_exprs())
   1906     Writer->Writer.AddStmt(E);
   1907   for (auto *E : C->rhs_exprs())
   1908     Writer->Writer.AddStmt(E);
   1909   for (auto *E : C->reduction_ops())
   1910     Writer->Writer.AddStmt(E);
   1911 }
   1912 
   1913 void OMPClauseWriter::VisitOMPLinearClause(OMPLinearClause *C) {
   1914   Record.push_back(C->varlist_size());
   1915   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1916   Writer->Writer.AddSourceLocation(C->getColonLoc(), Record);
   1917   Record.push_back(C->getModifier());
   1918   Writer->Writer.AddSourceLocation(C->getModifierLoc(), Record);
   1919   for (auto *VE : C->varlists()) {
   1920     Writer->Writer.AddStmt(VE);
   1921   }
   1922   for (auto *VE : C->privates()) {
   1923     Writer->Writer.AddStmt(VE);
   1924   }
   1925   for (auto *VE : C->inits()) {
   1926     Writer->Writer.AddStmt(VE);
   1927   }
   1928   for (auto *VE : C->updates()) {
   1929     Writer->Writer.AddStmt(VE);
   1930   }
   1931   for (auto *VE : C->finals()) {
   1932     Writer->Writer.AddStmt(VE);
   1933   }
   1934   Writer->Writer.AddStmt(C->getStep());
   1935   Writer->Writer.AddStmt(C->getCalcStep());
   1936 }
   1937 
   1938 void OMPClauseWriter::VisitOMPAlignedClause(OMPAlignedClause *C) {
   1939   Record.push_back(C->varlist_size());
   1940   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1941   Writer->Writer.AddSourceLocation(C->getColonLoc(), Record);
   1942   for (auto *VE : C->varlists())
   1943     Writer->Writer.AddStmt(VE);
   1944   Writer->Writer.AddStmt(C->getAlignment());
   1945 }
   1946 
   1947 void OMPClauseWriter::VisitOMPCopyinClause(OMPCopyinClause *C) {
   1948   Record.push_back(C->varlist_size());
   1949   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1950   for (auto *VE : C->varlists())
   1951     Writer->Writer.AddStmt(VE);
   1952   for (auto *E : C->source_exprs())
   1953     Writer->Writer.AddStmt(E);
   1954   for (auto *E : C->destination_exprs())
   1955     Writer->Writer.AddStmt(E);
   1956   for (auto *E : C->assignment_ops())
   1957     Writer->Writer.AddStmt(E);
   1958 }
   1959 
   1960 void OMPClauseWriter::VisitOMPCopyprivateClause(OMPCopyprivateClause *C) {
   1961   Record.push_back(C->varlist_size());
   1962   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1963   for (auto *VE : C->varlists())
   1964     Writer->Writer.AddStmt(VE);
   1965   for (auto *E : C->source_exprs())
   1966     Writer->Writer.AddStmt(E);
   1967   for (auto *E : C->destination_exprs())
   1968     Writer->Writer.AddStmt(E);
   1969   for (auto *E : C->assignment_ops())
   1970     Writer->Writer.AddStmt(E);
   1971 }
   1972 
   1973 void OMPClauseWriter::VisitOMPFlushClause(OMPFlushClause *C) {
   1974   Record.push_back(C->varlist_size());
   1975   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1976   for (auto *VE : C->varlists())
   1977     Writer->Writer.AddStmt(VE);
   1978 }
   1979 
   1980 void OMPClauseWriter::VisitOMPDependClause(OMPDependClause *C) {
   1981   Record.push_back(C->varlist_size());
   1982   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1983   Record.push_back(C->getDependencyKind());
   1984   Writer->Writer.AddSourceLocation(C->getDependencyLoc(), Record);
   1985   Writer->Writer.AddSourceLocation(C->getColonLoc(), Record);
   1986   for (auto *VE : C->varlists())
   1987     Writer->Writer.AddStmt(VE);
   1988 }
   1989 
   1990 void OMPClauseWriter::VisitOMPDeviceClause(OMPDeviceClause *C) {
   1991   Writer->Writer.AddStmt(C->getDevice());
   1992   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1993 }
   1994 
   1995 void OMPClauseWriter::VisitOMPMapClause(OMPMapClause *C) {
   1996   Record.push_back(C->varlist_size());
   1997   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   1998   Record.push_back(C->getMapTypeModifier());
   1999   Record.push_back(C->getMapType());
   2000   Writer->Writer.AddSourceLocation(C->getMapLoc(), Record);
   2001   Writer->Writer.AddSourceLocation(C->getColonLoc(), Record);
   2002   for (auto *VE : C->varlists())
   2003     Writer->Writer.AddStmt(VE);
   2004 }
   2005 
   2006 void OMPClauseWriter::VisitOMPNumTeamsClause(OMPNumTeamsClause *C) {
   2007   Writer->Writer.AddStmt(C->getNumTeams());
   2008   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   2009 }
   2010 
   2011 void OMPClauseWriter::VisitOMPThreadLimitClause(OMPThreadLimitClause *C) {
   2012   Writer->Writer.AddStmt(C->getThreadLimit());
   2013   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   2014 }
   2015 
   2016 void OMPClauseWriter::VisitOMPPriorityClause(OMPPriorityClause *C) {
   2017   Writer->Writer.AddStmt(C->getPriority());
   2018   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   2019 }
   2020 
   2021 void OMPClauseWriter::VisitOMPGrainsizeClause(OMPGrainsizeClause *C) {
   2022   Writer->Writer.AddStmt(C->getGrainsize());
   2023   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   2024 }
   2025 
   2026 void OMPClauseWriter::VisitOMPNumTasksClause(OMPNumTasksClause *C) {
   2027   Writer->Writer.AddStmt(C->getNumTasks());
   2028   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   2029 }
   2030 
   2031 void OMPClauseWriter::VisitOMPHintClause(OMPHintClause *C) {
   2032   Writer->Writer.AddStmt(C->getHint());
   2033   Writer->Writer.AddSourceLocation(C->getLParenLoc(), Record);
   2034 }
   2035 
   2036 //===----------------------------------------------------------------------===//
   2037 // OpenMP Directives.
   2038 //===----------------------------------------------------------------------===//
   2039 void ASTStmtWriter::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
   2040   Writer.AddSourceLocation(E->getLocStart(), Record);
   2041   Writer.AddSourceLocation(E->getLocEnd(), Record);
   2042   OMPClauseWriter ClauseWriter(this, Record);
   2043   for (unsigned i = 0; i < E->getNumClauses(); ++i) {
   2044     ClauseWriter.writeClause(E->getClause(i));
   2045   }
   2046   if (E->hasAssociatedStmt())
   2047     Writer.AddStmt(E->getAssociatedStmt());
   2048 }
   2049 
   2050 void ASTStmtWriter::VisitOMPLoopDirective(OMPLoopDirective *D) {
   2051   VisitStmt(D);
   2052   Record.push_back(D->getNumClauses());
   2053   Record.push_back(D->getCollapsedNumber());
   2054   VisitOMPExecutableDirective(D);
   2055   Writer.AddStmt(D->getIterationVariable());
   2056   Writer.AddStmt(D->getLastIteration());
   2057   Writer.AddStmt(D->getCalcLastIteration());
   2058   Writer.AddStmt(D->getPreCond());
   2059   Writer.AddStmt(D->getCond());
   2060   Writer.AddStmt(D->getInit());
   2061   Writer.AddStmt(D->getInc());
   2062   if (isOpenMPWorksharingDirective(D->getDirectiveKind())) {
   2063     Writer.AddStmt(D->getIsLastIterVariable());
   2064     Writer.AddStmt(D->getLowerBoundVariable());
   2065     Writer.AddStmt(D->getUpperBoundVariable());
   2066     Writer.AddStmt(D->getStrideVariable());
   2067     Writer.AddStmt(D->getEnsureUpperBound());
   2068     Writer.AddStmt(D->getNextLowerBound());
   2069     Writer.AddStmt(D->getNextUpperBound());
   2070   }
   2071   for (auto I : D->counters()) {
   2072     Writer.AddStmt(I);
   2073   }
   2074   for (auto I : D->private_counters()) {
   2075     Writer.AddStmt(I);
   2076   }
   2077   for (auto I : D->inits()) {
   2078     Writer.AddStmt(I);
   2079   }
   2080   for (auto I : D->updates()) {
   2081     Writer.AddStmt(I);
   2082   }
   2083   for (auto I : D->finals()) {
   2084     Writer.AddStmt(I);
   2085   }
   2086 }
   2087 
   2088 void ASTStmtWriter::VisitOMPParallelDirective(OMPParallelDirective *D) {
   2089   VisitStmt(D);
   2090   Record.push_back(D->getNumClauses());
   2091   VisitOMPExecutableDirective(D);
   2092   Record.push_back(D->hasCancel() ? 1 : 0);
   2093   Code = serialization::STMT_OMP_PARALLEL_DIRECTIVE;
   2094 }
   2095 
   2096 void ASTStmtWriter::VisitOMPSimdDirective(OMPSimdDirective *D) {
   2097   VisitOMPLoopDirective(D);
   2098   Code = serialization::STMT_OMP_SIMD_DIRECTIVE;
   2099 }
   2100 
   2101 void ASTStmtWriter::VisitOMPForDirective(OMPForDirective *D) {
   2102   VisitOMPLoopDirective(D);
   2103   Record.push_back(D->hasCancel() ? 1 : 0);
   2104   Code = serialization::STMT_OMP_FOR_DIRECTIVE;
   2105 }
   2106 
   2107 void ASTStmtWriter::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
   2108   VisitOMPLoopDirective(D);
   2109   Code = serialization::STMT_OMP_FOR_SIMD_DIRECTIVE;
   2110 }
   2111 
   2112 void ASTStmtWriter::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
   2113   VisitStmt(D);
   2114   Record.push_back(D->getNumClauses());
   2115   VisitOMPExecutableDirective(D);
   2116   Record.push_back(D->hasCancel() ? 1 : 0);
   2117   Code = serialization::STMT_OMP_SECTIONS_DIRECTIVE;
   2118 }
   2119 
   2120 void ASTStmtWriter::VisitOMPSectionDirective(OMPSectionDirective *D) {
   2121   VisitStmt(D);
   2122   VisitOMPExecutableDirective(D);
   2123   Record.push_back(D->hasCancel() ? 1 : 0);
   2124   Code = serialization::STMT_OMP_SECTION_DIRECTIVE;
   2125 }
   2126 
   2127 void ASTStmtWriter::VisitOMPSingleDirective(OMPSingleDirective *D) {
   2128   VisitStmt(D);
   2129   Record.push_back(D->getNumClauses());
   2130   VisitOMPExecutableDirective(D);
   2131   Code = serialization::STMT_OMP_SINGLE_DIRECTIVE;
   2132 }
   2133 
   2134 void ASTStmtWriter::VisitOMPMasterDirective(OMPMasterDirective *D) {
   2135   VisitStmt(D);
   2136   VisitOMPExecutableDirective(D);
   2137   Code = serialization::STMT_OMP_MASTER_DIRECTIVE;
   2138 }
   2139 
   2140 void ASTStmtWriter::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
   2141   VisitStmt(D);
   2142   Record.push_back(D->getNumClauses());
   2143   VisitOMPExecutableDirective(D);
   2144   Writer.AddDeclarationNameInfo(D->getDirectiveName(), Record);
   2145   Code = serialization::STMT_OMP_CRITICAL_DIRECTIVE;
   2146 }
   2147 
   2148 void ASTStmtWriter::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
   2149   VisitOMPLoopDirective(D);
   2150   Record.push_back(D->hasCancel() ? 1 : 0);
   2151   Code = serialization::STMT_OMP_PARALLEL_FOR_DIRECTIVE;
   2152 }
   2153 
   2154 void ASTStmtWriter::VisitOMPParallelForSimdDirective(
   2155     OMPParallelForSimdDirective *D) {
   2156   VisitOMPLoopDirective(D);
   2157   Code = serialization::STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE;
   2158 }
   2159 
   2160 void ASTStmtWriter::VisitOMPParallelSectionsDirective(
   2161     OMPParallelSectionsDirective *D) {
   2162   VisitStmt(D);
   2163   Record.push_back(D->getNumClauses());
   2164   VisitOMPExecutableDirective(D);
   2165   Record.push_back(D->hasCancel() ? 1 : 0);
   2166   Code = serialization::STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE;
   2167 }
   2168 
   2169 void ASTStmtWriter::VisitOMPTaskDirective(OMPTaskDirective *D) {
   2170   VisitStmt(D);
   2171   Record.push_back(D->getNumClauses());
   2172   VisitOMPExecutableDirective(D);
   2173   Record.push_back(D->hasCancel() ? 1 : 0);
   2174   Code = serialization::STMT_OMP_TASK_DIRECTIVE;
   2175 }
   2176 
   2177 void ASTStmtWriter::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
   2178   VisitStmt(D);
   2179   Record.push_back(D->getNumClauses());
   2180   VisitOMPExecutableDirective(D);
   2181   Writer.AddStmt(D->getX());
   2182   Writer.AddStmt(D->getV());
   2183   Writer.AddStmt(D->getExpr());
   2184   Writer.AddStmt(D->getUpdateExpr());
   2185   Record.push_back(D->isXLHSInRHSPart() ? 1 : 0);
   2186   Record.push_back(D->isPostfixUpdate() ? 1 : 0);
   2187   Code = serialization::STMT_OMP_ATOMIC_DIRECTIVE;
   2188 }
   2189 
   2190 void ASTStmtWriter::VisitOMPTargetDirective(OMPTargetDirective *D) {
   2191   VisitStmt(D);
   2192   Record.push_back(D->getNumClauses());
   2193   VisitOMPExecutableDirective(D);
   2194   Code = serialization::STMT_OMP_TARGET_DIRECTIVE;
   2195 }
   2196 
   2197 void ASTStmtWriter::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
   2198   VisitStmt(D);
   2199   Record.push_back(D->getNumClauses());
   2200   VisitOMPExecutableDirective(D);
   2201   Code = serialization::STMT_OMP_TARGET_DATA_DIRECTIVE;
   2202 }
   2203 
   2204 void ASTStmtWriter::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
   2205   VisitStmt(D);
   2206   VisitOMPExecutableDirective(D);
   2207   Code = serialization::STMT_OMP_TASKYIELD_DIRECTIVE;
   2208 }
   2209 
   2210 void ASTStmtWriter::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
   2211   VisitStmt(D);
   2212   VisitOMPExecutableDirective(D);
   2213   Code = serialization::STMT_OMP_BARRIER_DIRECTIVE;
   2214 }
   2215 
   2216 void ASTStmtWriter::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
   2217   VisitStmt(D);
   2218   VisitOMPExecutableDirective(D);
   2219   Code = serialization::STMT_OMP_TASKWAIT_DIRECTIVE;
   2220 }
   2221 
   2222 void ASTStmtWriter::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
   2223   VisitStmt(D);
   2224   VisitOMPExecutableDirective(D);
   2225   Code = serialization::STMT_OMP_TASKGROUP_DIRECTIVE;
   2226 }
   2227 
   2228 void ASTStmtWriter::VisitOMPFlushDirective(OMPFlushDirective *D) {
   2229   VisitStmt(D);
   2230   Record.push_back(D->getNumClauses());
   2231   VisitOMPExecutableDirective(D);
   2232   Code = serialization::STMT_OMP_FLUSH_DIRECTIVE;
   2233 }
   2234 
   2235 void ASTStmtWriter::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
   2236   VisitStmt(D);
   2237   Record.push_back(D->getNumClauses());
   2238   VisitOMPExecutableDirective(D);
   2239   Code = serialization::STMT_OMP_ORDERED_DIRECTIVE;
   2240 }
   2241 
   2242 void ASTStmtWriter::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
   2243   VisitStmt(D);
   2244   Record.push_back(D->getNumClauses());
   2245   VisitOMPExecutableDirective(D);
   2246   Code = serialization::STMT_OMP_TEAMS_DIRECTIVE;
   2247 }
   2248 
   2249 void ASTStmtWriter::VisitOMPCancellationPointDirective(
   2250     OMPCancellationPointDirective *D) {
   2251   VisitStmt(D);
   2252   VisitOMPExecutableDirective(D);
   2253   Record.push_back(D->getCancelRegion());
   2254   Code = serialization::STMT_OMP_CANCELLATION_POINT_DIRECTIVE;
   2255 }
   2256 
   2257 void ASTStmtWriter::VisitOMPCancelDirective(OMPCancelDirective *D) {
   2258   VisitStmt(D);
   2259   Record.push_back(D->getNumClauses());
   2260   VisitOMPExecutableDirective(D);
   2261   Record.push_back(D->getCancelRegion());
   2262   Code = serialization::STMT_OMP_CANCEL_DIRECTIVE;
   2263 }
   2264 
   2265 void ASTStmtWriter::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
   2266   VisitOMPLoopDirective(D);
   2267   Code = serialization::STMT_OMP_TASKLOOP_DIRECTIVE;
   2268 }
   2269 
   2270 void ASTStmtWriter::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
   2271   VisitOMPLoopDirective(D);
   2272   Code = serialization::STMT_OMP_TASKLOOP_SIMD_DIRECTIVE;
   2273 }
   2274 
   2275 void ASTStmtWriter::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
   2276   VisitOMPLoopDirective(D);
   2277   Code = serialization::STMT_OMP_DISTRIBUTE_DIRECTIVE;
   2278 }
   2279 
   2280 //===----------------------------------------------------------------------===//
   2281 // ASTWriter Implementation
   2282 //===----------------------------------------------------------------------===//
   2283 
   2284 unsigned ASTWriter::RecordSwitchCaseID(SwitchCase *S) {
   2285   assert(SwitchCaseIDs.find(S) == SwitchCaseIDs.end() &&
   2286          "SwitchCase recorded twice");
   2287   unsigned NextID = SwitchCaseIDs.size();
   2288   SwitchCaseIDs[S] = NextID;
   2289   return NextID;
   2290 }
   2291 
   2292 unsigned ASTWriter::getSwitchCaseID(SwitchCase *S) {
   2293   assert(SwitchCaseIDs.find(S) != SwitchCaseIDs.end() &&
   2294          "SwitchCase hasn't been seen yet");
   2295   return SwitchCaseIDs[S];
   2296 }
   2297 
   2298 void ASTWriter::ClearSwitchCaseIDs() {
   2299   SwitchCaseIDs.clear();
   2300 }
   2301 
   2302 /// \brief Write the given substatement or subexpression to the
   2303 /// bitstream.
   2304 void ASTWriter::WriteSubStmt(Stmt *S,
   2305                              llvm::DenseMap<Stmt *, uint64_t> &SubStmtEntries,
   2306                              llvm::DenseSet<Stmt *> &ParentStmts) {
   2307   RecordData Record;
   2308   ASTStmtWriter Writer(*this, Record);
   2309   ++NumStatements;
   2310 
   2311   if (!S) {
   2312     Stream.EmitRecord(serialization::STMT_NULL_PTR, Record);
   2313     return;
   2314   }
   2315 
   2316   llvm::DenseMap<Stmt *, uint64_t>::iterator I = SubStmtEntries.find(S);
   2317   if (I != SubStmtEntries.end()) {
   2318     Record.push_back(I->second);
   2319     Stream.EmitRecord(serialization::STMT_REF_PTR, Record);
   2320     return;
   2321   }
   2322 
   2323 #ifndef NDEBUG
   2324   assert(!ParentStmts.count(S) && "There is a Stmt cycle!");
   2325 
   2326   struct ParentStmtInserterRAII {
   2327     Stmt *S;
   2328     llvm::DenseSet<Stmt *> &ParentStmts;
   2329 
   2330     ParentStmtInserterRAII(Stmt *S, llvm::DenseSet<Stmt *> &ParentStmts)
   2331       : S(S), ParentStmts(ParentStmts) {
   2332       ParentStmts.insert(S);
   2333     }
   2334     ~ParentStmtInserterRAII() {
   2335       ParentStmts.erase(S);
   2336     }
   2337   };
   2338 
   2339   ParentStmtInserterRAII ParentStmtInserter(S, ParentStmts);
   2340 #endif
   2341 
   2342   // Redirect ASTWriter::AddStmt to collect sub-stmts.
   2343   SmallVector<Stmt *, 16> SubStmts;
   2344   CollectedStmts = &SubStmts;
   2345 
   2346   Writer.Code = serialization::STMT_NULL_PTR;
   2347   Writer.AbbrevToUse = 0;
   2348   Writer.Visit(S);
   2349 
   2350 #ifndef NDEBUG
   2351   if (Writer.Code == serialization::STMT_NULL_PTR) {
   2352     SourceManager &SrcMgr
   2353       = DeclIDs.begin()->first->getASTContext().getSourceManager();
   2354     S->dump(SrcMgr);
   2355     llvm_unreachable("Unhandled sub-statement writing AST file");
   2356   }
   2357 #endif
   2358 
   2359   // Revert ASTWriter::AddStmt.
   2360   CollectedStmts = &StmtsToEmit;
   2361 
   2362   // Write the sub-stmts in reverse order, last to first. When reading them back
   2363   // we will read them in correct order by "pop"ing them from the Stmts stack.
   2364   // This simplifies reading and allows to store a variable number of sub-stmts
   2365   // without knowing it in advance.
   2366   while (!SubStmts.empty())
   2367     WriteSubStmt(SubStmts.pop_back_val(), SubStmtEntries, ParentStmts);
   2368 
   2369   Stream.EmitRecord(Writer.Code, Record, Writer.AbbrevToUse);
   2370 
   2371   SubStmtEntries[S] = Stream.GetCurrentBitNo();
   2372 }
   2373 
   2374 /// \brief Flush all of the statements that have been added to the
   2375 /// queue via AddStmt().
   2376 void ASTWriter::FlushStmts() {
   2377   RecordData Record;
   2378 
   2379   // We expect to be the only consumer of the two temporary statement maps,
   2380   // assert that they are empty.
   2381   assert(SubStmtEntries.empty() && "unexpected entries in sub-stmt map");
   2382   assert(ParentStmts.empty() && "unexpected entries in parent stmt map");
   2383 
   2384   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
   2385     WriteSubStmt(StmtsToEmit[I], SubStmtEntries, ParentStmts);
   2386 
   2387     assert(N == StmtsToEmit.size() &&
   2388            "Substatement written via AddStmt rather than WriteSubStmt!");
   2389 
   2390     // Note that we are at the end of a full expression. Any
   2391     // expression records that follow this one are part of a different
   2392     // expression.
   2393     Stream.EmitRecord(serialization::STMT_STOP, Record);
   2394 
   2395     SubStmtEntries.clear();
   2396     ParentStmts.clear();
   2397   }
   2398 
   2399   StmtsToEmit.clear();
   2400 }
   2401