contrib/llvm/tools/clang/lib/Serialization/ASTWriterStmt.cpp

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