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 //  This file implements serialization for Statements and Expressions.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/Serialization/ASTWriter.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclObjC.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/StmtVisitor.h"
19 #include "llvm/Bitcode/BitstreamWriter.h"
20 using namespace clang;
21 
22 //===----------------------------------------------------------------------===//
23 // Statement/expression serialization
24 //===----------------------------------------------------------------------===//
25 
26 namespace clang {
27   class ASTStmtWriter : public StmtVisitor<ASTStmtWriter, void> {
28     ASTWriter &Writer;
29     ASTWriter::RecordData &Record;
30 
31   public:
32     serialization::StmtCode Code;
33     unsigned AbbrevToUse;
34 
35     ASTStmtWriter(ASTWriter &Writer, ASTWriter::RecordData &Record)
36       : Writer(Writer), Record(Record) { }
37 
38     void AddTemplateKWAndArgsInfo(const ASTTemplateKWAndArgsInfo &Args);
39 
40     void VisitStmt(Stmt *S);
41 #define STMT(Type, Base) \
42     void Visit##Type(Type *);
43 #include "clang/AST/StmtNodes.inc"
44   };
45 }
46 
47 void ASTStmtWriter::
48 AddTemplateKWAndArgsInfo(const ASTTemplateKWAndArgsInfo &Args) {
49   Writer.AddSourceLocation(Args.getTemplateKeywordLoc(), Record);
50   Writer.AddSourceLocation(Args.LAngleLoc, Record);
51   Writer.AddSourceLocation(Args.RAngleLoc, Record);
52   for (unsigned i=0; i != Args.NumTemplateArgs; ++i)
53     Writer.AddTemplateArgumentLoc(Args.getTemplateArgs()[i], Record);
54 }
55 
56 void ASTStmtWriter::VisitStmt(Stmt *S) {
57 }
58 
59 void ASTStmtWriter::VisitNullStmt(NullStmt *S) {
60   VisitStmt(S);
61   Writer.AddSourceLocation(S->getSemiLoc(), Record);
62   Record.push_back(S->HasLeadingEmptyMacro);
63   Code = serialization::STMT_NULL;
64 }
65 
66 void ASTStmtWriter::VisitCompoundStmt(CompoundStmt *S) {
67   VisitStmt(S);
68   Record.push_back(S->size());
69   for (CompoundStmt::body_iterator CS = S->body_begin(), CSEnd = S->body_end();
70        CS != CSEnd; ++CS)
71     Writer.AddStmt(*CS);
72   Writer.AddSourceLocation(S->getLBracLoc(), Record);
73   Writer.AddSourceLocation(S->getRBracLoc(), Record);
74   Code = serialization::STMT_COMPOUND;
75 }
76 
77 void ASTStmtWriter::VisitSwitchCase(SwitchCase *S) {
78   VisitStmt(S);
79   Record.push_back(Writer.getSwitchCaseID(S));
80 }
81 
82 void ASTStmtWriter::VisitCaseStmt(CaseStmt *S) {
83   VisitSwitchCase(S);
84   Writer.AddStmt(S->getLHS());
85   Writer.AddStmt(S->getRHS());
86   Writer.AddStmt(S->getSubStmt());
87   Writer.AddSourceLocation(S->getCaseLoc(), Record);
88   Writer.AddSourceLocation(S->getEllipsisLoc(), Record);
89   Writer.AddSourceLocation(S->getColonLoc(), Record);
90   Code = serialization::STMT_CASE;
91 }
92 
93 void ASTStmtWriter::VisitDefaultStmt(DefaultStmt *S) {
94   VisitSwitchCase(S);
95   Writer.AddStmt(S->getSubStmt());
96   Writer.AddSourceLocation(S->getDefaultLoc(), Record);
97   Writer.AddSourceLocation(S->getColonLoc(), Record);
98   Code = serialization::STMT_DEFAULT;
99 }
100 
101 void ASTStmtWriter::VisitLabelStmt(LabelStmt *S) {
102   VisitStmt(S);
103   Writer.AddDeclRef(S->getDecl(), Record);
104   Writer.AddStmt(S->getSubStmt());
105   Writer.AddSourceLocation(S->getIdentLoc(), Record);
106   Code = serialization::STMT_LABEL;
107 }
108 
109 void ASTStmtWriter::VisitIfStmt(IfStmt *S) {
110   VisitStmt(S);
111   Writer.AddDeclRef(S->getConditionVariable(), Record);
112   Writer.AddStmt(S->getCond());
113   Writer.AddStmt(S->getThen());
114   Writer.AddStmt(S->getElse());
115   Writer.AddSourceLocation(S->getIfLoc(), Record);
116   Writer.AddSourceLocation(S->getElseLoc(), Record);
117   Code = serialization::STMT_IF;
118 }
119 
120 void ASTStmtWriter::VisitSwitchStmt(SwitchStmt *S) {
121   VisitStmt(S);
122   Writer.AddDeclRef(S->getConditionVariable(), Record);
123   Writer.AddStmt(S->getCond());
124   Writer.AddStmt(S->getBody());
125   Writer.AddSourceLocation(S->getSwitchLoc(), Record);
126   Record.push_back(S->isAllEnumCasesCovered());
127   for (SwitchCase *SC = S->getSwitchCaseList(); SC;
128        SC = SC->getNextSwitchCase())
129     Record.push_back(Writer.RecordSwitchCaseID(SC));
130   Code = serialization::STMT_SWITCH;
131 }
132 
133 void ASTStmtWriter::VisitWhileStmt(WhileStmt *S) {
134   VisitStmt(S);
135   Writer.AddDeclRef(S->getConditionVariable(), Record);
136   Writer.AddStmt(S->getCond());
137   Writer.AddStmt(S->getBody());
138   Writer.AddSourceLocation(S->getWhileLoc(), Record);
139   Code = serialization::STMT_WHILE;
140 }
141 
142 void ASTStmtWriter::VisitDoStmt(DoStmt *S) {
143   VisitStmt(S);
144   Writer.AddStmt(S->getCond());
145   Writer.AddStmt(S->getBody());
146   Writer.AddSourceLocation(S->getDoLoc(), Record);
147   Writer.AddSourceLocation(S->getWhileLoc(), Record);
148   Writer.AddSourceLocation(S->getRParenLoc(), Record);
149   Code = serialization::STMT_DO;
150 }
151 
152 void ASTStmtWriter::VisitForStmt(ForStmt *S) {
153   VisitStmt(S);
154   Writer.AddStmt(S->getInit());
155   Writer.AddStmt(S->getCond());
156   Writer.AddDeclRef(S->getConditionVariable(), Record);
157   Writer.AddStmt(S->getInc());
158   Writer.AddStmt(S->getBody());
159   Writer.AddSourceLocation(S->getForLoc(), Record);
160   Writer.AddSourceLocation(S->getLParenLoc(), Record);
161   Writer.AddSourceLocation(S->getRParenLoc(), Record);
162   Code = serialization::STMT_FOR;
163 }
164 
165 void ASTStmtWriter::VisitGotoStmt(GotoStmt *S) {
166   VisitStmt(S);
167   Writer.AddDeclRef(S->getLabel(), Record);
168   Writer.AddSourceLocation(S->getGotoLoc(), Record);
169   Writer.AddSourceLocation(S->getLabelLoc(), Record);
170   Code = serialization::STMT_GOTO;
171 }
172 
173 void ASTStmtWriter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
174   VisitStmt(S);
175   Writer.AddSourceLocation(S->getGotoLoc(), Record);
176   Writer.AddSourceLocation(S->getStarLoc(), Record);
177   Writer.AddStmt(S->getTarget());
178   Code = serialization::STMT_INDIRECT_GOTO;
179 }
180 
181 void ASTStmtWriter::VisitContinueStmt(ContinueStmt *S) {
182   VisitStmt(S);
183   Writer.AddSourceLocation(S->getContinueLoc(), Record);
184   Code = serialization::STMT_CONTINUE;
185 }
186 
187 void ASTStmtWriter::VisitBreakStmt(BreakStmt *S) {
188   VisitStmt(S);
189   Writer.AddSourceLocation(S->getBreakLoc(), Record);
190   Code = serialization::STMT_BREAK;
191 }
192 
193 void ASTStmtWriter::VisitReturnStmt(ReturnStmt *S) {
194   VisitStmt(S);
195   Writer.AddStmt(S->getRetValue());
196   Writer.AddSourceLocation(S->getReturnLoc(), Record);
197   Writer.AddDeclRef(S->getNRVOCandidate(), Record);
198   Code = serialization::STMT_RETURN;
199 }
200 
201 void ASTStmtWriter::VisitDeclStmt(DeclStmt *S) {
202   VisitStmt(S);
203   Writer.AddSourceLocation(S->getStartLoc(), Record);
204   Writer.AddSourceLocation(S->getEndLoc(), Record);
205   DeclGroupRef DG = S->getDeclGroup();
206   for (DeclGroupRef::iterator D = DG.begin(), DEnd = DG.end(); D != DEnd; ++D)
207     Writer.AddDeclRef(*D, Record);
208   Code = serialization::STMT_DECL;
209 }
210 
211 void ASTStmtWriter::VisitAsmStmt(AsmStmt *S) {
212   VisitStmt(S);
213   Record.push_back(S->getNumOutputs());
214   Record.push_back(S->getNumInputs());
215   Record.push_back(S->getNumClobbers());
216   Writer.AddSourceLocation(S->getAsmLoc(), Record);
217   Writer.AddSourceLocation(S->getRParenLoc(), Record);
218   Record.push_back(S->isVolatile());
219   Record.push_back(S->isSimple());
220   Record.push_back(S->isMSAsm());
221   Writer.AddStmt(S->getAsmString());
222 
223   // Outputs
224   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
225     Writer.AddIdentifierRef(S->getOutputIdentifier(I), Record);
226     Writer.AddStmt(S->getOutputConstraintLiteral(I));
227     Writer.AddStmt(S->getOutputExpr(I));
228   }
229 
230   // Inputs
231   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
232     Writer.AddIdentifierRef(S->getInputIdentifier(I), Record);
233     Writer.AddStmt(S->getInputConstraintLiteral(I));
234     Writer.AddStmt(S->getInputExpr(I));
235   }
236 
237   // Clobbers
238   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
239     Writer.AddStmt(S->getClobber(I));
240 
241   Code = serialization::STMT_ASM;
242 }
243 
244 void ASTStmtWriter::VisitExpr(Expr *E) {
245   VisitStmt(E);
246   Writer.AddTypeRef(E->getType(), Record);
247   Record.push_back(E->isTypeDependent());
248   Record.push_back(E->isValueDependent());
249   Record.push_back(E->isInstantiationDependent());
250   Record.push_back(E->containsUnexpandedParameterPack());
251   Record.push_back(E->getValueKind());
252   Record.push_back(E->getObjectKind());
253 }
254 
255 void ASTStmtWriter::VisitPredefinedExpr(PredefinedExpr *E) {
256   VisitExpr(E);
257   Writer.AddSourceLocation(E->getLocation(), Record);
258   Record.push_back(E->getIdentType()); // FIXME: stable encoding
259   Code = serialization::EXPR_PREDEFINED;
260 }
261 
262 void ASTStmtWriter::VisitDeclRefExpr(DeclRefExpr *E) {
263   VisitExpr(E);
264 
265   Record.push_back(E->hasQualifier());
266   Record.push_back(E->getDecl() != E->getFoundDecl());
267   Record.push_back(E->hasTemplateKWAndArgsInfo());
268   Record.push_back(E->hadMultipleCandidates());
269   Record.push_back(E->refersToEnclosingLocal());
270 
271   if (E->hasTemplateKWAndArgsInfo()) {
272     unsigned NumTemplateArgs = E->getNumTemplateArgs();
273     Record.push_back(NumTemplateArgs);
274   }
275 
276   DeclarationName::NameKind nk = (E->getDecl()->getDeclName().getNameKind());
277 
278   if ((!E->hasTemplateKWAndArgsInfo()) && (!E->hasQualifier()) &&
279       (E->getDecl() == E->getFoundDecl()) &&
280       nk == DeclarationName::Identifier) {
281     AbbrevToUse = Writer.getDeclRefExprAbbrev();
282   }
283 
284   if (E->hasQualifier())
285     Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
286 
287   if (E->getDecl() != E->getFoundDecl())
288     Writer.AddDeclRef(E->getFoundDecl(), Record);
289 
290   if (E->hasTemplateKWAndArgsInfo())
291     AddTemplateKWAndArgsInfo(*E->getTemplateKWAndArgsInfo());
292 
293   Writer.AddDeclRef(E->getDecl(), Record);
294   Writer.AddSourceLocation(E->getLocation(), Record);
295   Writer.AddDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName(), Record);
296   Code = serialization::EXPR_DECL_REF;
297 }
298 
299 void ASTStmtWriter::VisitIntegerLiteral(IntegerLiteral *E) {
300   VisitExpr(E);
301   Writer.AddSourceLocation(E->getLocation(), Record);
302   Writer.AddAPInt(E->getValue(), Record);
303 
304   if (E->getValue().getBitWidth() == 32) {
305     AbbrevToUse = Writer.getIntegerLiteralAbbrev();
306   }
307 
308   Code = serialization::EXPR_INTEGER_LITERAL;
309 }
310 
311 void ASTStmtWriter::VisitFloatingLiteral(FloatingLiteral *E) {
312   VisitExpr(E);
313   Writer.AddAPFloat(E->getValue(), Record);
314   Record.push_back(E->isExact());
315   Writer.AddSourceLocation(E->getLocation(), Record);
316   Code = serialization::EXPR_FLOATING_LITERAL;
317 }
318 
319 void ASTStmtWriter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
320   VisitExpr(E);
321   Writer.AddStmt(E->getSubExpr());
322   Code = serialization::EXPR_IMAGINARY_LITERAL;
323 }
324 
325 void ASTStmtWriter::VisitStringLiteral(StringLiteral *E) {
326   VisitExpr(E);
327   Record.push_back(E->getByteLength());
328   Record.push_back(E->getNumConcatenated());
329   Record.push_back(E->getKind());
330   Record.push_back(E->isPascal());
331   // FIXME: String data should be stored as a blob at the end of the
332   // StringLiteral. However, we can't do so now because we have no
333   // provision for coping with abbreviations when we're jumping around
334   // the AST file during deserialization.
335   Record.append(E->getBytes().begin(), E->getBytes().end());
336   for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
337     Writer.AddSourceLocation(E->getStrTokenLoc(I), Record);
338   Code = serialization::EXPR_STRING_LITERAL;
339 }
340 
341 void ASTStmtWriter::VisitCharacterLiteral(CharacterLiteral *E) {
342   VisitExpr(E);
343   Record.push_back(E->getValue());
344   Writer.AddSourceLocation(E->getLocation(), Record);
345   Record.push_back(E->getKind());
346 
347   AbbrevToUse = Writer.getCharacterLiteralAbbrev();
348 
349   Code = serialization::EXPR_CHARACTER_LITERAL;
350 }
351 
352 void ASTStmtWriter::VisitParenExpr(ParenExpr *E) {
353   VisitExpr(E);
354   Writer.AddSourceLocation(E->getLParen(), Record);
355   Writer.AddSourceLocation(E->getRParen(), Record);
356   Writer.AddStmt(E->getSubExpr());
357   Code = serialization::EXPR_PAREN;
358 }
359 
360 void ASTStmtWriter::VisitParenListExpr(ParenListExpr *E) {
361   VisitExpr(E);
362   Record.push_back(E->NumExprs);
363   for (unsigned i=0; i != E->NumExprs; ++i)
364     Writer.AddStmt(E->Exprs[i]);
365   Writer.AddSourceLocation(E->LParenLoc, Record);
366   Writer.AddSourceLocation(E->RParenLoc, Record);
367   Code = serialization::EXPR_PAREN_LIST;
368 }
369 
370 void ASTStmtWriter::VisitUnaryOperator(UnaryOperator *E) {
371   VisitExpr(E);
372   Writer.AddStmt(E->getSubExpr());
373   Record.push_back(E->getOpcode()); // FIXME: stable encoding
374   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
375   Code = serialization::EXPR_UNARY_OPERATOR;
376 }
377 
378 void ASTStmtWriter::VisitOffsetOfExpr(OffsetOfExpr *E) {
379   VisitExpr(E);
380   Record.push_back(E->getNumComponents());
381   Record.push_back(E->getNumExpressions());
382   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
383   Writer.AddSourceLocation(E->getRParenLoc(), Record);
384   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
385   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
386     const OffsetOfExpr::OffsetOfNode &ON = E->getComponent(I);
387     Record.push_back(ON.getKind()); // FIXME: Stable encoding
388     Writer.AddSourceLocation(ON.getSourceRange().getBegin(), Record);
389     Writer.AddSourceLocation(ON.getSourceRange().getEnd(), Record);
390     switch (ON.getKind()) {
391     case OffsetOfExpr::OffsetOfNode::Array:
392       Record.push_back(ON.getArrayExprIndex());
393       break;
394 
395     case OffsetOfExpr::OffsetOfNode::Field:
396       Writer.AddDeclRef(ON.getField(), Record);
397       break;
398 
399     case OffsetOfExpr::OffsetOfNode::Identifier:
400       Writer.AddIdentifierRef(ON.getFieldName(), Record);
401       break;
402 
403     case OffsetOfExpr::OffsetOfNode::Base:
404       Writer.AddCXXBaseSpecifier(*ON.getBase(), Record);
405       break;
406     }
407   }
408   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
409     Writer.AddStmt(E->getIndexExpr(I));
410   Code = serialization::EXPR_OFFSETOF;
411 }
412 
413 void ASTStmtWriter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
414   VisitExpr(E);
415   Record.push_back(E->getKind());
416   if (E->isArgumentType())
417     Writer.AddTypeSourceInfo(E->getArgumentTypeInfo(), Record);
418   else {
419     Record.push_back(0);
420     Writer.AddStmt(E->getArgumentExpr());
421   }
422   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
423   Writer.AddSourceLocation(E->getRParenLoc(), Record);
424   Code = serialization::EXPR_SIZEOF_ALIGN_OF;
425 }
426 
427 void ASTStmtWriter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
428   VisitExpr(E);
429   Writer.AddStmt(E->getLHS());
430   Writer.AddStmt(E->getRHS());
431   Writer.AddSourceLocation(E->getRBracketLoc(), Record);
432   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
433 }
434 
435 void ASTStmtWriter::VisitCallExpr(CallExpr *E) {
436   VisitExpr(E);
437   Record.push_back(E->getNumArgs());
438   Writer.AddSourceLocation(E->getRParenLoc(), Record);
439   Writer.AddStmt(E->getCallee());
440   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
441        Arg != ArgEnd; ++Arg)
442     Writer.AddStmt(*Arg);
443   Code = serialization::EXPR_CALL;
444 }
445 
446 void ASTStmtWriter::VisitMemberExpr(MemberExpr *E) {
447   // Don't call VisitExpr, we'll write everything here.
448 
449   Record.push_back(E->hasQualifier());
450   if (E->hasQualifier())
451     Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
452 
453   Record.push_back(E->HasTemplateKWAndArgsInfo);
454   if (E->HasTemplateKWAndArgsInfo) {
455     Writer.AddSourceLocation(E->getTemplateKeywordLoc(), Record);
456     unsigned NumTemplateArgs = E->getNumTemplateArgs();
457     Record.push_back(NumTemplateArgs);
458     Writer.AddSourceLocation(E->getLAngleLoc(), Record);
459     Writer.AddSourceLocation(E->getRAngleLoc(), Record);
460     for (unsigned i=0; i != NumTemplateArgs; ++i)
461       Writer.AddTemplateArgumentLoc(E->getTemplateArgs()[i], Record);
462   }
463 
464   Record.push_back(E->hadMultipleCandidates());
465 
466   DeclAccessPair FoundDecl = E->getFoundDecl();
467   Writer.AddDeclRef(FoundDecl.getDecl(), Record);
468   Record.push_back(FoundDecl.getAccess());
469 
470   Writer.AddTypeRef(E->getType(), Record);
471   Record.push_back(E->getValueKind());
472   Record.push_back(E->getObjectKind());
473   Writer.AddStmt(E->getBase());
474   Writer.AddDeclRef(E->getMemberDecl(), Record);
475   Writer.AddSourceLocation(E->getMemberLoc(), Record);
476   Record.push_back(E->isArrow());
477   Writer.AddDeclarationNameLoc(E->MemberDNLoc,
478                                E->getMemberDecl()->getDeclName(), Record);
479   Code = serialization::EXPR_MEMBER;
480 }
481 
482 void ASTStmtWriter::VisitObjCIsaExpr(ObjCIsaExpr *E) {
483   VisitExpr(E);
484   Writer.AddStmt(E->getBase());
485   Writer.AddSourceLocation(E->getIsaMemberLoc(), Record);
486   Record.push_back(E->isArrow());
487   Code = serialization::EXPR_OBJC_ISA;
488 }
489 
490 void ASTStmtWriter::
491 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
492   VisitExpr(E);
493   Writer.AddStmt(E->getSubExpr());
494   Record.push_back(E->shouldCopy());
495   Code = serialization::EXPR_OBJC_INDIRECT_COPY_RESTORE;
496 }
497 
498 void ASTStmtWriter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
499   VisitExplicitCastExpr(E);
500   Writer.AddSourceLocation(E->getLParenLoc(), Record);
501   Writer.AddSourceLocation(E->getBridgeKeywordLoc(), Record);
502   Record.push_back(E->getBridgeKind()); // FIXME: Stable encoding
503   Code = serialization::EXPR_OBJC_BRIDGED_CAST;
504 }
505 
506 void ASTStmtWriter::VisitCastExpr(CastExpr *E) {
507   VisitExpr(E);
508   Record.push_back(E->path_size());
509   Writer.AddStmt(E->getSubExpr());
510   Record.push_back(E->getCastKind()); // FIXME: stable encoding
511 
512   for (CastExpr::path_iterator
513          PI = E->path_begin(), PE = E->path_end(); PI != PE; ++PI)
514     Writer.AddCXXBaseSpecifier(**PI, Record);
515 }
516 
517 void ASTStmtWriter::VisitBinaryOperator(BinaryOperator *E) {
518   VisitExpr(E);
519   Writer.AddStmt(E->getLHS());
520   Writer.AddStmt(E->getRHS());
521   Record.push_back(E->getOpcode()); // FIXME: stable encoding
522   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
523   Code = serialization::EXPR_BINARY_OPERATOR;
524 }
525 
526 void ASTStmtWriter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
527   VisitBinaryOperator(E);
528   Writer.AddTypeRef(E->getComputationLHSType(), Record);
529   Writer.AddTypeRef(E->getComputationResultType(), Record);
530   Code = serialization::EXPR_COMPOUND_ASSIGN_OPERATOR;
531 }
532 
533 void ASTStmtWriter::VisitConditionalOperator(ConditionalOperator *E) {
534   VisitExpr(E);
535   Writer.AddStmt(E->getCond());
536   Writer.AddStmt(E->getLHS());
537   Writer.AddStmt(E->getRHS());
538   Writer.AddSourceLocation(E->getQuestionLoc(), Record);
539   Writer.AddSourceLocation(E->getColonLoc(), Record);
540   Code = serialization::EXPR_CONDITIONAL_OPERATOR;
541 }
542 
543 void
544 ASTStmtWriter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
545   VisitExpr(E);
546   Writer.AddStmt(E->getOpaqueValue());
547   Writer.AddStmt(E->getCommon());
548   Writer.AddStmt(E->getCond());
549   Writer.AddStmt(E->getTrueExpr());
550   Writer.AddStmt(E->getFalseExpr());
551   Writer.AddSourceLocation(E->getQuestionLoc(), Record);
552   Writer.AddSourceLocation(E->getColonLoc(), Record);
553   Code = serialization::EXPR_BINARY_CONDITIONAL_OPERATOR;
554 }
555 
556 void ASTStmtWriter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
557   VisitCastExpr(E);
558   Code = serialization::EXPR_IMPLICIT_CAST;
559 }
560 
561 void ASTStmtWriter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
562   VisitCastExpr(E);
563   Writer.AddTypeSourceInfo(E->getTypeInfoAsWritten(), Record);
564 }
565 
566 void ASTStmtWriter::VisitCStyleCastExpr(CStyleCastExpr *E) {
567   VisitExplicitCastExpr(E);
568   Writer.AddSourceLocation(E->getLParenLoc(), Record);
569   Writer.AddSourceLocation(E->getRParenLoc(), Record);
570   Code = serialization::EXPR_CSTYLE_CAST;
571 }
572 
573 void ASTStmtWriter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
574   VisitExpr(E);
575   Writer.AddSourceLocation(E->getLParenLoc(), Record);
576   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
577   Writer.AddStmt(E->getInitializer());
578   Record.push_back(E->isFileScope());
579   Code = serialization::EXPR_COMPOUND_LITERAL;
580 }
581 
582 void ASTStmtWriter::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
583   VisitExpr(E);
584   Writer.AddStmt(E->getBase());
585   Writer.AddIdentifierRef(&E->getAccessor(), Record);
586   Writer.AddSourceLocation(E->getAccessorLoc(), Record);
587   Code = serialization::EXPR_EXT_VECTOR_ELEMENT;
588 }
589 
590 void ASTStmtWriter::VisitInitListExpr(InitListExpr *E) {
591   VisitExpr(E);
592   Writer.AddStmt(E->getSyntacticForm());
593   Writer.AddSourceLocation(E->getLBraceLoc(), Record);
594   Writer.AddSourceLocation(E->getRBraceLoc(), Record);
595   bool isArrayFiller = E->ArrayFillerOrUnionFieldInit.is<Expr*>();
596   Record.push_back(isArrayFiller);
597   if (isArrayFiller)
598     Writer.AddStmt(E->getArrayFiller());
599   else
600     Writer.AddDeclRef(E->getInitializedFieldInUnion(), Record);
601   Record.push_back(E->hadArrayRangeDesignator());
602   Record.push_back(E->initializesStdInitializerList());
603   Record.push_back(E->getNumInits());
604   if (isArrayFiller) {
605     // ArrayFiller may have filled "holes" due to designated initializer.
606     // Replace them by 0 to indicate that the filler goes in that place.
607     Expr *filler = E->getArrayFiller();
608     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
609       Writer.AddStmt(E->getInit(I) != filler ? E->getInit(I) : 0);
610   } else {
611     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
612       Writer.AddStmt(E->getInit(I));
613   }
614   Code = serialization::EXPR_INIT_LIST;
615 }
616 
617 void ASTStmtWriter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
618   VisitExpr(E);
619   Record.push_back(E->getNumSubExprs());
620   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
621     Writer.AddStmt(E->getSubExpr(I));
622   Writer.AddSourceLocation(E->getEqualOrColonLoc(), Record);
623   Record.push_back(E->usesGNUSyntax());
624   for (DesignatedInitExpr::designators_iterator D = E->designators_begin(),
625                                              DEnd = E->designators_end();
626        D != DEnd; ++D) {
627     if (D->isFieldDesignator()) {
628       if (FieldDecl *Field = D->getField()) {
629         Record.push_back(serialization::DESIG_FIELD_DECL);
630         Writer.AddDeclRef(Field, Record);
631       } else {
632         Record.push_back(serialization::DESIG_FIELD_NAME);
633         Writer.AddIdentifierRef(D->getFieldName(), Record);
634       }
635       Writer.AddSourceLocation(D->getDotLoc(), Record);
636       Writer.AddSourceLocation(D->getFieldLoc(), Record);
637     } else if (D->isArrayDesignator()) {
638       Record.push_back(serialization::DESIG_ARRAY);
639       Record.push_back(D->getFirstExprIndex());
640       Writer.AddSourceLocation(D->getLBracketLoc(), Record);
641       Writer.AddSourceLocation(D->getRBracketLoc(), Record);
642     } else {
643       assert(D->isArrayRangeDesignator() && "Unknown designator");
644       Record.push_back(serialization::DESIG_ARRAY_RANGE);
645       Record.push_back(D->getFirstExprIndex());
646       Writer.AddSourceLocation(D->getLBracketLoc(), Record);
647       Writer.AddSourceLocation(D->getEllipsisLoc(), Record);
648       Writer.AddSourceLocation(D->getRBracketLoc(), Record);
649     }
650   }
651   Code = serialization::EXPR_DESIGNATED_INIT;
652 }
653 
654 void ASTStmtWriter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
655   VisitExpr(E);
656   Code = serialization::EXPR_IMPLICIT_VALUE_INIT;
657 }
658 
659 void ASTStmtWriter::VisitVAArgExpr(VAArgExpr *E) {
660   VisitExpr(E);
661   Writer.AddStmt(E->getSubExpr());
662   Writer.AddTypeSourceInfo(E->getWrittenTypeInfo(), Record);
663   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
664   Writer.AddSourceLocation(E->getRParenLoc(), Record);
665   Code = serialization::EXPR_VA_ARG;
666 }
667 
668 void ASTStmtWriter::VisitAddrLabelExpr(AddrLabelExpr *E) {
669   VisitExpr(E);
670   Writer.AddSourceLocation(E->getAmpAmpLoc(), Record);
671   Writer.AddSourceLocation(E->getLabelLoc(), Record);
672   Writer.AddDeclRef(E->getLabel(), Record);
673   Code = serialization::EXPR_ADDR_LABEL;
674 }
675 
676 void ASTStmtWriter::VisitStmtExpr(StmtExpr *E) {
677   VisitExpr(E);
678   Writer.AddStmt(E->getSubStmt());
679   Writer.AddSourceLocation(E->getLParenLoc(), Record);
680   Writer.AddSourceLocation(E->getRParenLoc(), Record);
681   Code = serialization::EXPR_STMT;
682 }
683 
684 void ASTStmtWriter::VisitChooseExpr(ChooseExpr *E) {
685   VisitExpr(E);
686   Writer.AddStmt(E->getCond());
687   Writer.AddStmt(E->getLHS());
688   Writer.AddStmt(E->getRHS());
689   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
690   Writer.AddSourceLocation(E->getRParenLoc(), Record);
691   Code = serialization::EXPR_CHOOSE;
692 }
693 
694 void ASTStmtWriter::VisitGNUNullExpr(GNUNullExpr *E) {
695   VisitExpr(E);
696   Writer.AddSourceLocation(E->getTokenLocation(), Record);
697   Code = serialization::EXPR_GNU_NULL;
698 }
699 
700 void ASTStmtWriter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
701   VisitExpr(E);
702   Record.push_back(E->getNumSubExprs());
703   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
704     Writer.AddStmt(E->getExpr(I));
705   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
706   Writer.AddSourceLocation(E->getRParenLoc(), Record);
707   Code = serialization::EXPR_SHUFFLE_VECTOR;
708 }
709 
710 void ASTStmtWriter::VisitBlockExpr(BlockExpr *E) {
711   VisitExpr(E);
712   Writer.AddDeclRef(E->getBlockDecl(), Record);
713   Code = serialization::EXPR_BLOCK;
714 }
715 
716 void ASTStmtWriter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
717   VisitExpr(E);
718   Record.push_back(E->getNumAssocs());
719 
720   Writer.AddStmt(E->getControllingExpr());
721   for (unsigned I = 0, N = E->getNumAssocs(); I != N; ++I) {
722     Writer.AddTypeSourceInfo(E->getAssocTypeSourceInfo(I), Record);
723     Writer.AddStmt(E->getAssocExpr(I));
724   }
725   Record.push_back(E->isResultDependent() ? -1U : E->getResultIndex());
726 
727   Writer.AddSourceLocation(E->getGenericLoc(), Record);
728   Writer.AddSourceLocation(E->getDefaultLoc(), Record);
729   Writer.AddSourceLocation(E->getRParenLoc(), Record);
730   Code = serialization::EXPR_GENERIC_SELECTION;
731 }
732 
733 void ASTStmtWriter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
734   VisitExpr(E);
735   Record.push_back(E->getNumSemanticExprs());
736 
737   // Push the result index.  Currently, this needs to exactly match
738   // the encoding used internally for ResultIndex.
739   unsigned result = E->getResultExprIndex();
740   result = (result == PseudoObjectExpr::NoResult ? 0 : result + 1);
741   Record.push_back(result);
742 
743   Writer.AddStmt(E->getSyntacticForm());
744   for (PseudoObjectExpr::semantics_iterator
745          i = E->semantics_begin(), e = E->semantics_end(); i != e; ++i) {
746     Writer.AddStmt(*i);
747   }
748   Code = serialization::EXPR_PSEUDO_OBJECT;
749 }
750 
751 void ASTStmtWriter::VisitAtomicExpr(AtomicExpr *E) {
752   VisitExpr(E);
753   Record.push_back(E->getOp());
754   Writer.AddStmt(E->getPtr());
755   Writer.AddStmt(E->getOrder());
756   if (E->getOp() != AtomicExpr::Load)
757     Writer.AddStmt(E->getVal1());
758   if (E->isCmpXChg()) {
759     Writer.AddStmt(E->getOrderFail());
760     Writer.AddStmt(E->getVal2());
761   }
762   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
763   Writer.AddSourceLocation(E->getRParenLoc(), Record);
764   Code = serialization::EXPR_ATOMIC;
765 }
766 
767 //===----------------------------------------------------------------------===//
768 // Objective-C Expressions and Statements.
769 //===----------------------------------------------------------------------===//
770 
771 void ASTStmtWriter::VisitObjCStringLiteral(ObjCStringLiteral *E) {
772   VisitExpr(E);
773   Writer.AddStmt(E->getString());
774   Writer.AddSourceLocation(E->getAtLoc(), Record);
775   Code = serialization::EXPR_OBJC_STRING_LITERAL;
776 }
777 
778 void ASTStmtWriter::VisitObjCNumericLiteral(ObjCNumericLiteral *E) {
779   VisitExpr(E);
780   Writer.AddStmt(E->getNumber());
781   Writer.AddDeclRef(E->getObjCNumericLiteralMethod(), Record);
782   Writer.AddSourceLocation(E->getAtLoc(), Record);
783   Code = serialization::EXPR_OBJC_NUMERIC_LITERAL;
784 }
785 
786 void ASTStmtWriter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
787   VisitExpr(E);
788   Record.push_back(E->getNumElements());
789   for (unsigned i = 0; i < E->getNumElements(); i++)
790     Writer.AddStmt(E->getElement(i));
791   Writer.AddDeclRef(E->getArrayWithObjectsMethod(), Record);
792   Writer.AddSourceRange(E->getSourceRange(), Record);
793   Code = serialization::EXPR_OBJC_ARRAY_LITERAL;
794 }
795 
796 void ASTStmtWriter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
797   VisitExpr(E);
798   Record.push_back(E->getNumElements());
799   Record.push_back(E->HasPackExpansions);
800   for (unsigned i = 0; i < E->getNumElements(); i++) {
801     ObjCDictionaryElement Element = E->getKeyValueElement(i);
802     Writer.AddStmt(Element.Key);
803     Writer.AddStmt(Element.Value);
804     if (E->HasPackExpansions) {
805       Writer.AddSourceLocation(Element.EllipsisLoc, Record);
806       unsigned NumExpansions = 0;
807       if (Element.NumExpansions)
808         NumExpansions = *Element.NumExpansions + 1;
809       Record.push_back(NumExpansions);
810     }
811   }
812 
813   Writer.AddDeclRef(E->getDictWithObjectsMethod(), Record);
814   Writer.AddSourceRange(E->getSourceRange(), Record);
815   Code = serialization::EXPR_OBJC_DICTIONARY_LITERAL;
816 }
817 
818 void ASTStmtWriter::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
819   VisitExpr(E);
820   Writer.AddTypeSourceInfo(E->getEncodedTypeSourceInfo(), Record);
821   Writer.AddSourceLocation(E->getAtLoc(), Record);
822   Writer.AddSourceLocation(E->getRParenLoc(), Record);
823   Code = serialization::EXPR_OBJC_ENCODE;
824 }
825 
826 void ASTStmtWriter::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
827   VisitExpr(E);
828   Writer.AddSelectorRef(E->getSelector(), Record);
829   Writer.AddSourceLocation(E->getAtLoc(), Record);
830   Writer.AddSourceLocation(E->getRParenLoc(), Record);
831   Code = serialization::EXPR_OBJC_SELECTOR_EXPR;
832 }
833 
834 void ASTStmtWriter::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
835   VisitExpr(E);
836   Writer.AddDeclRef(E->getProtocol(), Record);
837   Writer.AddSourceLocation(E->getAtLoc(), Record);
838   Writer.AddSourceLocation(E->getRParenLoc(), Record);
839   Code = serialization::EXPR_OBJC_PROTOCOL_EXPR;
840 }
841 
842 void ASTStmtWriter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
843   VisitExpr(E);
844   Writer.AddDeclRef(E->getDecl(), Record);
845   Writer.AddSourceLocation(E->getLocation(), Record);
846   Writer.AddStmt(E->getBase());
847   Record.push_back(E->isArrow());
848   Record.push_back(E->isFreeIvar());
849   Code = serialization::EXPR_OBJC_IVAR_REF_EXPR;
850 }
851 
852 void ASTStmtWriter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
853   VisitExpr(E);
854   Record.push_back(E->isImplicitProperty());
855   if (E->isImplicitProperty()) {
856     Writer.AddDeclRef(E->getImplicitPropertyGetter(), Record);
857     Writer.AddDeclRef(E->getImplicitPropertySetter(), Record);
858   } else {
859     Writer.AddDeclRef(E->getExplicitProperty(), Record);
860   }
861   Writer.AddSourceLocation(E->getLocation(), Record);
862   Writer.AddSourceLocation(E->getReceiverLocation(), Record);
863   if (E->isObjectReceiver()) {
864     Record.push_back(0);
865     Writer.AddStmt(E->getBase());
866   } else if (E->isSuperReceiver()) {
867     Record.push_back(1);
868     Writer.AddTypeRef(E->getSuperReceiverType(), Record);
869   } else {
870     Record.push_back(2);
871     Writer.AddDeclRef(E->getClassReceiver(), Record);
872   }
873 
874   Code = serialization::EXPR_OBJC_PROPERTY_REF_EXPR;
875 }
876 
877 void ASTStmtWriter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
878   VisitExpr(E);
879   Writer.AddSourceLocation(E->getRBracket(), Record);
880   Writer.AddStmt(E->getBaseExpr());
881   Writer.AddStmt(E->getKeyExpr());
882   Writer.AddDeclRef(E->getAtIndexMethodDecl(), Record);
883   Writer.AddDeclRef(E->setAtIndexMethodDecl(), Record);
884 
885   Code = serialization::EXPR_OBJC_SUBSCRIPT_REF_EXPR;
886 }
887 
888 void ASTStmtWriter::VisitObjCMessageExpr(ObjCMessageExpr *E) {
889   VisitExpr(E);
890   Record.push_back(E->getNumArgs());
891   Record.push_back(E->getNumStoredSelLocs());
892   Record.push_back(E->SelLocsKind);
893   Record.push_back(E->isDelegateInitCall());
894   Record.push_back(E->IsImplicit);
895   Record.push_back((unsigned)E->getReceiverKind()); // FIXME: stable encoding
896   switch (E->getReceiverKind()) {
897   case ObjCMessageExpr::Instance:
898     Writer.AddStmt(E->getInstanceReceiver());
899     break;
900 
901   case ObjCMessageExpr::Class:
902     Writer.AddTypeSourceInfo(E->getClassReceiverTypeInfo(), Record);
903     break;
904 
905   case ObjCMessageExpr::SuperClass:
906   case ObjCMessageExpr::SuperInstance:
907     Writer.AddTypeRef(E->getSuperType(), Record);
908     Writer.AddSourceLocation(E->getSuperLoc(), Record);
909     break;
910   }
911 
912   if (E->getMethodDecl()) {
913     Record.push_back(1);
914     Writer.AddDeclRef(E->getMethodDecl(), Record);
915   } else {
916     Record.push_back(0);
917     Writer.AddSelectorRef(E->getSelector(), Record);
918   }
919 
920   Writer.AddSourceLocation(E->getLeftLoc(), Record);
921   Writer.AddSourceLocation(E->getRightLoc(), Record);
922 
923   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
924        Arg != ArgEnd; ++Arg)
925     Writer.AddStmt(*Arg);
926 
927   SourceLocation *Locs = E->getStoredSelLocs();
928   for (unsigned i = 0, e = E->getNumStoredSelLocs(); i != e; ++i)
929     Writer.AddSourceLocation(Locs[i], Record);
930 
931   Code = serialization::EXPR_OBJC_MESSAGE_EXPR;
932 }
933 
934 void ASTStmtWriter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
935   VisitStmt(S);
936   Writer.AddStmt(S->getElement());
937   Writer.AddStmt(S->getCollection());
938   Writer.AddStmt(S->getBody());
939   Writer.AddSourceLocation(S->getForLoc(), Record);
940   Writer.AddSourceLocation(S->getRParenLoc(), Record);
941   Code = serialization::STMT_OBJC_FOR_COLLECTION;
942 }
943 
944 void ASTStmtWriter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
945   Writer.AddStmt(S->getCatchBody());
946   Writer.AddDeclRef(S->getCatchParamDecl(), Record);
947   Writer.AddSourceLocation(S->getAtCatchLoc(), Record);
948   Writer.AddSourceLocation(S->getRParenLoc(), Record);
949   Code = serialization::STMT_OBJC_CATCH;
950 }
951 
952 void ASTStmtWriter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
953   Writer.AddStmt(S->getFinallyBody());
954   Writer.AddSourceLocation(S->getAtFinallyLoc(), Record);
955   Code = serialization::STMT_OBJC_FINALLY;
956 }
957 
958 void ASTStmtWriter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
959   Writer.AddStmt(S->getSubStmt());
960   Writer.AddSourceLocation(S->getAtLoc(), Record);
961   Code = serialization::STMT_OBJC_AUTORELEASE_POOL;
962 }
963 
964 void ASTStmtWriter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
965   Record.push_back(S->getNumCatchStmts());
966   Record.push_back(S->getFinallyStmt() != 0);
967   Writer.AddStmt(S->getTryBody());
968   for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
969     Writer.AddStmt(S->getCatchStmt(I));
970   if (S->getFinallyStmt())
971     Writer.AddStmt(S->getFinallyStmt());
972   Writer.AddSourceLocation(S->getAtTryLoc(), Record);
973   Code = serialization::STMT_OBJC_AT_TRY;
974 }
975 
976 void ASTStmtWriter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
977   Writer.AddStmt(S->getSynchExpr());
978   Writer.AddStmt(S->getSynchBody());
979   Writer.AddSourceLocation(S->getAtSynchronizedLoc(), Record);
980   Code = serialization::STMT_OBJC_AT_SYNCHRONIZED;
981 }
982 
983 void ASTStmtWriter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
984   Writer.AddStmt(S->getThrowExpr());
985   Writer.AddSourceLocation(S->getThrowLoc(), Record);
986   Code = serialization::STMT_OBJC_AT_THROW;
987 }
988 
989 void ASTStmtWriter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
990   VisitExpr(E);
991   Record.push_back(E->getValue());
992   Writer.AddSourceLocation(E->getLocation(), Record);
993   Code = serialization::EXPR_OBJC_BOOL_LITERAL;
994 }
995 
996 //===----------------------------------------------------------------------===//
997 // C++ Expressions and Statements.
998 //===----------------------------------------------------------------------===//
999 
1000 void ASTStmtWriter::VisitCXXCatchStmt(CXXCatchStmt *S) {
1001   VisitStmt(S);
1002   Writer.AddSourceLocation(S->getCatchLoc(), Record);
1003   Writer.AddDeclRef(S->getExceptionDecl(), Record);
1004   Writer.AddStmt(S->getHandlerBlock());
1005   Code = serialization::STMT_CXX_CATCH;
1006 }
1007 
1008 void ASTStmtWriter::VisitCXXTryStmt(CXXTryStmt *S) {
1009   VisitStmt(S);
1010   Record.push_back(S->getNumHandlers());
1011   Writer.AddSourceLocation(S->getTryLoc(), Record);
1012   Writer.AddStmt(S->getTryBlock());
1013   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1014     Writer.AddStmt(S->getHandler(i));
1015   Code = serialization::STMT_CXX_TRY;
1016 }
1017 
1018 void ASTStmtWriter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1019   VisitStmt(S);
1020   Writer.AddSourceLocation(S->getForLoc(), Record);
1021   Writer.AddSourceLocation(S->getColonLoc(), Record);
1022   Writer.AddSourceLocation(S->getRParenLoc(), Record);
1023   Writer.AddStmt(S->getRangeStmt());
1024   Writer.AddStmt(S->getBeginEndStmt());
1025   Writer.AddStmt(S->getCond());
1026   Writer.AddStmt(S->getInc());
1027   Writer.AddStmt(S->getLoopVarStmt());
1028   Writer.AddStmt(S->getBody());
1029   Code = serialization::STMT_CXX_FOR_RANGE;
1030 }
1031 
1032 void ASTStmtWriter::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1033   VisitStmt(S);
1034   Writer.AddSourceLocation(S->getKeywordLoc(), Record);
1035   Record.push_back(S->isIfExists());
1036   Writer.AddNestedNameSpecifierLoc(S->getQualifierLoc(), Record);
1037   Writer.AddDeclarationNameInfo(S->getNameInfo(), Record);
1038   Writer.AddStmt(S->getSubStmt());
1039   Code = serialization::STMT_MS_DEPENDENT_EXISTS;
1040 }
1041 
1042 void ASTStmtWriter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1043   VisitCallExpr(E);
1044   Record.push_back(E->getOperator());
1045   Code = serialization::EXPR_CXX_OPERATOR_CALL;
1046 }
1047 
1048 void ASTStmtWriter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
1049   VisitCallExpr(E);
1050   Code = serialization::EXPR_CXX_MEMBER_CALL;
1051 }
1052 
1053 void ASTStmtWriter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1054   VisitExpr(E);
1055   Record.push_back(E->getNumArgs());
1056   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1057     Writer.AddStmt(E->getArg(I));
1058   Writer.AddDeclRef(E->getConstructor(), Record);
1059   Writer.AddSourceLocation(E->getLocation(), Record);
1060   Record.push_back(E->isElidable());
1061   Record.push_back(E->hadMultipleCandidates());
1062   Record.push_back(E->requiresZeroInitialization());
1063   Record.push_back(E->getConstructionKind()); // FIXME: stable encoding
1064   Writer.AddSourceRange(E->getParenRange(), Record);
1065   Code = serialization::EXPR_CXX_CONSTRUCT;
1066 }
1067 
1068 void ASTStmtWriter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1069   VisitCXXConstructExpr(E);
1070   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
1071   Code = serialization::EXPR_CXX_TEMPORARY_OBJECT;
1072 }
1073 
1074 void ASTStmtWriter::VisitLambdaExpr(LambdaExpr *E) {
1075   VisitExpr(E);
1076   Record.push_back(E->NumCaptures);
1077   unsigned NumArrayIndexVars = 0;
1078   if (E->HasArrayIndexVars)
1079     NumArrayIndexVars = E->getArrayIndexStarts()[E->NumCaptures];
1080   Record.push_back(NumArrayIndexVars);
1081   Writer.AddSourceRange(E->IntroducerRange, Record);
1082   Record.push_back(E->CaptureDefault); // FIXME: stable encoding
1083   Record.push_back(E->ExplicitParams);
1084   Record.push_back(E->ExplicitResultType);
1085   Writer.AddSourceLocation(E->ClosingBrace, Record);
1086 
1087   // Add capture initializers.
1088   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1089                                       CEnd = E->capture_init_end();
1090        C != CEnd; ++C) {
1091     Writer.AddStmt(*C);
1092   }
1093 
1094   // Add array index variables, if any.
1095   if (NumArrayIndexVars) {
1096     Record.append(E->getArrayIndexStarts(),
1097                   E->getArrayIndexStarts() + E->NumCaptures + 1);
1098     VarDecl **ArrayIndexVars = E->getArrayIndexVars();
1099     for (unsigned I = 0; I != NumArrayIndexVars; ++I)
1100       Writer.AddDeclRef(ArrayIndexVars[I], Record);
1101   }
1102 
1103   Code = serialization::EXPR_LAMBDA;
1104 }
1105 
1106 void ASTStmtWriter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1107   VisitExplicitCastExpr(E);
1108   Writer.AddSourceRange(SourceRange(E->getOperatorLoc(), E->getRParenLoc()),
1109                         Record);
1110 }
1111 
1112 void ASTStmtWriter::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1113   VisitCXXNamedCastExpr(E);
1114   Code = serialization::EXPR_CXX_STATIC_CAST;
1115 }
1116 
1117 void ASTStmtWriter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1118   VisitCXXNamedCastExpr(E);
1119   Code = serialization::EXPR_CXX_DYNAMIC_CAST;
1120 }
1121 
1122 void ASTStmtWriter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1123   VisitCXXNamedCastExpr(E);
1124   Code = serialization::EXPR_CXX_REINTERPRET_CAST;
1125 }
1126 
1127 void ASTStmtWriter::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1128   VisitCXXNamedCastExpr(E);
1129   Code = serialization::EXPR_CXX_CONST_CAST;
1130 }
1131 
1132 void ASTStmtWriter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1133   VisitExplicitCastExpr(E);
1134   Writer.AddSourceLocation(E->getTypeBeginLoc(), Record);
1135   Writer.AddSourceLocation(E->getRParenLoc(), Record);
1136   Code = serialization::EXPR_CXX_FUNCTIONAL_CAST;
1137 }
1138 
1139 void ASTStmtWriter::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1140   VisitCallExpr(E);
1141   Writer.AddSourceLocation(E->UDSuffixLoc, Record);
1142   Code = serialization::EXPR_USER_DEFINED_LITERAL;
1143 }
1144 
1145 void ASTStmtWriter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1146   VisitExpr(E);
1147   Record.push_back(E->getValue());
1148   Writer.AddSourceLocation(E->getLocation(), Record);
1149   Code = serialization::EXPR_CXX_BOOL_LITERAL;
1150 }
1151 
1152 void ASTStmtWriter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1153   VisitExpr(E);
1154   Writer.AddSourceLocation(E->getLocation(), Record);
1155   Code = serialization::EXPR_CXX_NULL_PTR_LITERAL;
1156 }
1157 
1158 void ASTStmtWriter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1159   VisitExpr(E);
1160   Writer.AddSourceRange(E->getSourceRange(), Record);
1161   if (E->isTypeOperand()) {
1162     Writer.AddTypeSourceInfo(E->getTypeOperandSourceInfo(), Record);
1163     Code = serialization::EXPR_CXX_TYPEID_TYPE;
1164   } else {
1165     Writer.AddStmt(E->getExprOperand());
1166     Code = serialization::EXPR_CXX_TYPEID_EXPR;
1167   }
1168 }
1169 
1170 void ASTStmtWriter::VisitCXXThisExpr(CXXThisExpr *E) {
1171   VisitExpr(E);
1172   Writer.AddSourceLocation(E->getLocation(), Record);
1173   Record.push_back(E->isImplicit());
1174   Code = serialization::EXPR_CXX_THIS;
1175 }
1176 
1177 void ASTStmtWriter::VisitCXXThrowExpr(CXXThrowExpr *E) {
1178   VisitExpr(E);
1179   Writer.AddSourceLocation(E->getThrowLoc(), Record);
1180   Writer.AddStmt(E->getSubExpr());
1181   Record.push_back(E->isThrownVariableInScope());
1182   Code = serialization::EXPR_CXX_THROW;
1183 }
1184 
1185 void ASTStmtWriter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1186   VisitExpr(E);
1187 
1188   bool HasOtherExprStored = E->Param.getInt();
1189   // Store these first, the reader reads them before creation.
1190   Record.push_back(HasOtherExprStored);
1191   if (HasOtherExprStored)
1192     Writer.AddStmt(E->getExpr());
1193   Writer.AddDeclRef(E->getParam(), Record);
1194   Writer.AddSourceLocation(E->getUsedLocation(), Record);
1195 
1196   Code = serialization::EXPR_CXX_DEFAULT_ARG;
1197 }
1198 
1199 void ASTStmtWriter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1200   VisitExpr(E);
1201   Writer.AddCXXTemporary(E->getTemporary(), Record);
1202   Writer.AddStmt(E->getSubExpr());
1203   Code = serialization::EXPR_CXX_BIND_TEMPORARY;
1204 }
1205 
1206 void ASTStmtWriter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1207   VisitExpr(E);
1208   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
1209   Writer.AddSourceLocation(E->getRParenLoc(), Record);
1210   Code = serialization::EXPR_CXX_SCALAR_VALUE_INIT;
1211 }
1212 
1213 void ASTStmtWriter::VisitCXXNewExpr(CXXNewExpr *E) {
1214   VisitExpr(E);
1215   Record.push_back(E->isGlobalNew());
1216   Record.push_back(E->isArray());
1217   Record.push_back(E->doesUsualArrayDeleteWantSize());
1218   Record.push_back(E->getNumPlacementArgs());
1219   Record.push_back(E->StoredInitializationStyle);
1220   Writer.AddDeclRef(E->getOperatorNew(), Record);
1221   Writer.AddDeclRef(E->getOperatorDelete(), Record);
1222   Writer.AddTypeSourceInfo(E->getAllocatedTypeSourceInfo(), Record);
1223   Writer.AddSourceRange(E->getTypeIdParens(), Record);
1224   Writer.AddSourceLocation(E->getStartLoc(), Record);
1225   Writer.AddSourceRange(E->getDirectInitRange(), Record);
1226   for (CXXNewExpr::arg_iterator I = E->raw_arg_begin(), e = E->raw_arg_end();
1227        I != e; ++I)
1228     Writer.AddStmt(*I);
1229 
1230   Code = serialization::EXPR_CXX_NEW;
1231 }
1232 
1233 void ASTStmtWriter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1234   VisitExpr(E);
1235   Record.push_back(E->isGlobalDelete());
1236   Record.push_back(E->isArrayForm());
1237   Record.push_back(E->isArrayFormAsWritten());
1238   Record.push_back(E->doesUsualArrayDeleteWantSize());
1239   Writer.AddDeclRef(E->getOperatorDelete(), Record);
1240   Writer.AddStmt(E->getArgument());
1241   Writer.AddSourceLocation(E->getSourceRange().getBegin(), Record);
1242 
1243   Code = serialization::EXPR_CXX_DELETE;
1244 }
1245 
1246 void ASTStmtWriter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1247   VisitExpr(E);
1248 
1249   Writer.AddStmt(E->getBase());
1250   Record.push_back(E->isArrow());
1251   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
1252   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
1253   Writer.AddTypeSourceInfo(E->getScopeTypeInfo(), Record);
1254   Writer.AddSourceLocation(E->getColonColonLoc(), Record);
1255   Writer.AddSourceLocation(E->getTildeLoc(), Record);
1256 
1257   // PseudoDestructorTypeStorage.
1258   Writer.AddIdentifierRef(E->getDestroyedTypeIdentifier(), Record);
1259   if (E->getDestroyedTypeIdentifier())
1260     Writer.AddSourceLocation(E->getDestroyedTypeLoc(), Record);
1261   else
1262     Writer.AddTypeSourceInfo(E->getDestroyedTypeInfo(), Record);
1263 
1264   Code = serialization::EXPR_CXX_PSEUDO_DESTRUCTOR;
1265 }
1266 
1267 void ASTStmtWriter::VisitExprWithCleanups(ExprWithCleanups *E) {
1268   VisitExpr(E);
1269   Record.push_back(E->getNumObjects());
1270   for (unsigned i = 0, e = E->getNumObjects(); i != e; ++i)
1271     Writer.AddDeclRef(E->getObject(i), Record);
1272 
1273   Writer.AddStmt(E->getSubExpr());
1274   Code = serialization::EXPR_EXPR_WITH_CLEANUPS;
1275 }
1276 
1277 void
1278 ASTStmtWriter::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E){
1279   VisitExpr(E);
1280 
1281   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
1282   // emitted first.
1283 
1284   Record.push_back(E->HasTemplateKWAndArgsInfo);
1285   if (E->HasTemplateKWAndArgsInfo) {
1286     const ASTTemplateKWAndArgsInfo &Args = *E->getTemplateKWAndArgsInfo();
1287     Record.push_back(Args.NumTemplateArgs);
1288     AddTemplateKWAndArgsInfo(Args);
1289   }
1290 
1291   if (!E->isImplicitAccess())
1292     Writer.AddStmt(E->getBase());
1293   else
1294     Writer.AddStmt(0);
1295   Writer.AddTypeRef(E->getBaseType(), Record);
1296   Record.push_back(E->isArrow());
1297   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
1298   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
1299   Writer.AddDeclRef(E->getFirstQualifierFoundInScope(), Record);
1300   Writer.AddDeclarationNameInfo(E->MemberNameInfo, Record);
1301   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_MEMBER;
1302 }
1303 
1304 void
1305 ASTStmtWriter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1306   VisitExpr(E);
1307 
1308   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
1309   // emitted first.
1310 
1311   Record.push_back(E->HasTemplateKWAndArgsInfo);
1312   if (E->HasTemplateKWAndArgsInfo) {
1313     const ASTTemplateKWAndArgsInfo &Args = *E->getTemplateKWAndArgsInfo();
1314     Record.push_back(Args.NumTemplateArgs);
1315     AddTemplateKWAndArgsInfo(Args);
1316   }
1317 
1318   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
1319   Writer.AddDeclarationNameInfo(E->NameInfo, Record);
1320   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_DECL_REF;
1321 }
1322 
1323 void
1324 ASTStmtWriter::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1325   VisitExpr(E);
1326   Record.push_back(E->arg_size());
1327   for (CXXUnresolvedConstructExpr::arg_iterator
1328          ArgI = E->arg_begin(), ArgE = E->arg_end(); ArgI != ArgE; ++ArgI)
1329     Writer.AddStmt(*ArgI);
1330   Writer.AddTypeSourceInfo(E->getTypeSourceInfo(), Record);
1331   Writer.AddSourceLocation(E->getLParenLoc(), Record);
1332   Writer.AddSourceLocation(E->getRParenLoc(), Record);
1333   Code = serialization::EXPR_CXX_UNRESOLVED_CONSTRUCT;
1334 }
1335 
1336 void ASTStmtWriter::VisitOverloadExpr(OverloadExpr *E) {
1337   VisitExpr(E);
1338 
1339   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
1340   // emitted first.
1341 
1342   Record.push_back(E->HasTemplateKWAndArgsInfo);
1343   if (E->HasTemplateKWAndArgsInfo) {
1344     const ASTTemplateKWAndArgsInfo &Args = *E->getTemplateKWAndArgsInfo();
1345     Record.push_back(Args.NumTemplateArgs);
1346     AddTemplateKWAndArgsInfo(Args);
1347   }
1348 
1349   Record.push_back(E->getNumDecls());
1350   for (OverloadExpr::decls_iterator
1351          OvI = E->decls_begin(), OvE = E->decls_end(); OvI != OvE; ++OvI) {
1352     Writer.AddDeclRef(OvI.getDecl(), Record);
1353     Record.push_back(OvI.getAccess());
1354   }
1355 
1356   Writer.AddDeclarationNameInfo(E->NameInfo, Record);
1357   Writer.AddNestedNameSpecifierLoc(E->getQualifierLoc(), Record);
1358 }
1359 
1360 void ASTStmtWriter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1361   VisitOverloadExpr(E);
1362   Record.push_back(E->isArrow());
1363   Record.push_back(E->hasUnresolvedUsing());
1364   Writer.AddStmt(!E->isImplicitAccess() ? E->getBase() : 0);
1365   Writer.AddTypeRef(E->getBaseType(), Record);
1366   Writer.AddSourceLocation(E->getOperatorLoc(), Record);
1367   Code = serialization::EXPR_CXX_UNRESOLVED_MEMBER;
1368 }
1369 
1370 void ASTStmtWriter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1371   VisitOverloadExpr(E);
1372   Record.push_back(E->requiresADL());
1373   if (E->requiresADL())
1374     Record.push_back(E->isStdAssociatedNamespace());
1375   Record.push_back(E->isOverloaded());
1376   Writer.AddDeclRef(E->getNamingClass(), Record);
1377   Code = serialization::EXPR_CXX_UNRESOLVED_LOOKUP;
1378 }
1379 
1380 void ASTStmtWriter::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) {
1381   VisitExpr(E);
1382   Record.push_back(E->getTrait());
1383   Record.push_back(E->getValue());
1384   Writer.AddSourceRange(E->getSourceRange(), Record);
1385   Writer.AddTypeSourceInfo(E->getQueriedTypeSourceInfo(), Record);
1386   Code = serialization::EXPR_CXX_UNARY_TYPE_TRAIT;
1387 }
1388 
1389 void ASTStmtWriter::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *E) {
1390   VisitExpr(E);
1391   Record.push_back(E->getTrait());
1392   Record.push_back(E->getValue());
1393   Writer.AddSourceRange(E->getSourceRange(), Record);
1394   Writer.AddTypeSourceInfo(E->getLhsTypeSourceInfo(), Record);
1395   Writer.AddTypeSourceInfo(E->getRhsTypeSourceInfo(), Record);
1396   Code = serialization::EXPR_BINARY_TYPE_TRAIT;
1397 }
1398 
1399 void ASTStmtWriter::VisitTypeTraitExpr(TypeTraitExpr *E) {
1400   VisitExpr(E);
1401   Record.push_back(E->TypeTraitExprBits.NumArgs);
1402   Record.push_back(E->TypeTraitExprBits.Kind); // FIXME: Stable encoding
1403   Record.push_back(E->TypeTraitExprBits.Value);
1404   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1405     Writer.AddTypeSourceInfo(E->getArg(I), Record);
1406   Code = serialization::EXPR_TYPE_TRAIT;
1407 }
1408 
1409 void ASTStmtWriter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1410   VisitExpr(E);
1411   Record.push_back(E->getTrait());
1412   Record.push_back(E->getValue());
1413   Writer.AddSourceRange(E->getSourceRange(), Record);
1414   Writer.AddTypeSourceInfo(E->getQueriedTypeSourceInfo(), Record);
1415   Code = serialization::EXPR_ARRAY_TYPE_TRAIT;
1416 }
1417 
1418 void ASTStmtWriter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1419   VisitExpr(E);
1420   Record.push_back(E->getTrait());
1421   Record.push_back(E->getValue());
1422   Writer.AddSourceRange(E->getSourceRange(), Record);
1423   Writer.AddStmt(E->getQueriedExpression());
1424   Code = serialization::EXPR_CXX_EXPRESSION_TRAIT;
1425 }
1426 
1427 void ASTStmtWriter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1428   VisitExpr(E);
1429   Record.push_back(E->getValue());
1430   Writer.AddSourceRange(E->getSourceRange(), Record);
1431   Writer.AddStmt(E->getOperand());
1432   Code = serialization::EXPR_CXX_NOEXCEPT;
1433 }
1434 
1435 void ASTStmtWriter::VisitPackExpansionExpr(PackExpansionExpr *E) {
1436   VisitExpr(E);
1437   Writer.AddSourceLocation(E->getEllipsisLoc(), Record);
1438   Record.push_back(E->NumExpansions);
1439   Writer.AddStmt(E->getPattern());
1440   Code = serialization::EXPR_PACK_EXPANSION;
1441 }
1442 
1443 void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
1444   VisitExpr(E);
1445   Writer.AddSourceLocation(E->OperatorLoc, Record);
1446   Writer.AddSourceLocation(E->PackLoc, Record);
1447   Writer.AddSourceLocation(E->RParenLoc, Record);
1448   Record.push_back(E->Length);
1449   Writer.AddDeclRef(E->Pack, Record);
1450   Code = serialization::EXPR_SIZEOF_PACK;
1451 }
1452 
1453 void ASTStmtWriter::VisitSubstNonTypeTemplateParmExpr(
1454                                               SubstNonTypeTemplateParmExpr *E) {
1455   VisitExpr(E);
1456   Writer.AddDeclRef(E->getParameter(), Record);
1457   Writer.AddSourceLocation(E->getNameLoc(), Record);
1458   Writer.AddStmt(E->getReplacement());
1459   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM;
1460 }
1461 
1462 void ASTStmtWriter::VisitSubstNonTypeTemplateParmPackExpr(
1463                                           SubstNonTypeTemplateParmPackExpr *E) {
1464   VisitExpr(E);
1465   Writer.AddDeclRef(E->getParameterPack(), Record);
1466   Writer.AddTemplateArgument(E->getArgumentPack(), Record);
1467   Writer.AddSourceLocation(E->getParameterPackLocation(), Record);
1468   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK;
1469 }
1470 
1471 void ASTStmtWriter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
1472   VisitExpr(E);
1473   Writer.AddStmt(E->Temporary);
1474   Code = serialization::EXPR_MATERIALIZE_TEMPORARY;
1475 }
1476 
1477 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
1478   VisitExpr(E);
1479   Writer.AddStmt(E->getSourceExpr());
1480   Writer.AddSourceLocation(E->getLocation(), Record);
1481   Code = serialization::EXPR_OPAQUE_VALUE;
1482 }
1483 
1484 //===----------------------------------------------------------------------===//
1485 // CUDA Expressions and Statements.
1486 //===----------------------------------------------------------------------===//
1487 
1488 void ASTStmtWriter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
1489   VisitCallExpr(E);
1490   Writer.AddStmt(E->getConfig());
1491   Code = serialization::EXPR_CUDA_KERNEL_CALL;
1492 }
1493 
1494 //===----------------------------------------------------------------------===//
1495 // OpenCL Expressions and Statements.
1496 //===----------------------------------------------------------------------===//
1497 void ASTStmtWriter::VisitAsTypeExpr(AsTypeExpr *E) {
1498   VisitExpr(E);
1499   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
1500   Writer.AddSourceLocation(E->getRParenLoc(), Record);
1501   Writer.AddStmt(E->getSrcExpr());
1502   Code = serialization::EXPR_ASTYPE;
1503 }
1504 
1505 //===----------------------------------------------------------------------===//
1506 // Microsoft Expressions and Statements.
1507 //===----------------------------------------------------------------------===//
1508 void ASTStmtWriter::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
1509   VisitExpr(E);
1510   Writer.AddSourceRange(E->getSourceRange(), Record);
1511   if (E->isTypeOperand()) {
1512     Writer.AddTypeSourceInfo(E->getTypeOperandSourceInfo(), Record);
1513     Code = serialization::EXPR_CXX_UUIDOF_TYPE;
1514   } else {
1515     Writer.AddStmt(E->getExprOperand());
1516     Code = serialization::EXPR_CXX_UUIDOF_EXPR;
1517   }
1518 }
1519 
1520 void ASTStmtWriter::VisitSEHExceptStmt(SEHExceptStmt *S) {
1521   VisitStmt(S);
1522   Writer.AddSourceLocation(S->getExceptLoc(), Record);
1523   Writer.AddStmt(S->getFilterExpr());
1524   Writer.AddStmt(S->getBlock());
1525   Code = serialization::STMT_SEH_EXCEPT;
1526 }
1527 
1528 void ASTStmtWriter::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
1529   VisitStmt(S);
1530   Writer.AddSourceLocation(S->getFinallyLoc(), Record);
1531   Writer.AddStmt(S->getBlock());
1532   Code = serialization::STMT_SEH_FINALLY;
1533 }
1534 
1535 void ASTStmtWriter::VisitSEHTryStmt(SEHTryStmt *S) {
1536   VisitStmt(S);
1537   Record.push_back(S->getIsCXXTry());
1538   Writer.AddSourceLocation(S->getTryLoc(), Record);
1539   Writer.AddStmt(S->getTryBlock());
1540   Writer.AddStmt(S->getHandler());
1541   Code = serialization::STMT_SEH_TRY;
1542 }
1543 
1544 //===----------------------------------------------------------------------===//
1545 // ASTWriter Implementation
1546 //===----------------------------------------------------------------------===//
1547 
1548 unsigned ASTWriter::RecordSwitchCaseID(SwitchCase *S) {
1549   assert(SwitchCaseIDs.find(S) == SwitchCaseIDs.end() &&
1550          "SwitchCase recorded twice");
1551   unsigned NextID = SwitchCaseIDs.size();
1552   SwitchCaseIDs[S] = NextID;
1553   return NextID;
1554 }
1555 
1556 unsigned ASTWriter::getSwitchCaseID(SwitchCase *S) {
1557   assert(SwitchCaseIDs.find(S) != SwitchCaseIDs.end() &&
1558          "SwitchCase hasn't been seen yet");
1559   return SwitchCaseIDs[S];
1560 }
1561 
1562 void ASTWriter::ClearSwitchCaseIDs() {
1563   SwitchCaseIDs.clear();
1564 }
1565 
1566 /// \brief Write the given substatement or subexpression to the
1567 /// bitstream.
1568 void ASTWriter::WriteSubStmt(Stmt *S,
1569                              llvm::DenseMap<Stmt *, uint64_t> &SubStmtEntries,
1570                              llvm::DenseSet<Stmt *> &ParentStmts) {
1571   RecordData Record;
1572   ASTStmtWriter Writer(*this, Record);
1573   ++NumStatements;
1574 
1575   if (!S) {
1576     Stream.EmitRecord(serialization::STMT_NULL_PTR, Record);
1577     return;
1578   }
1579 
1580   llvm::DenseMap<Stmt *, uint64_t>::iterator I = SubStmtEntries.find(S);
1581   if (I != SubStmtEntries.end()) {
1582     Record.push_back(I->second);
1583     Stream.EmitRecord(serialization::STMT_REF_PTR, Record);
1584     return;
1585   }
1586 
1587 #ifndef NDEBUG
1588   assert(!ParentStmts.count(S) && "There is a Stmt cycle!");
1589 
1590   struct ParentStmtInserterRAII {
1591     Stmt *S;
1592     llvm::DenseSet<Stmt *> &ParentStmts;
1593 
1594     ParentStmtInserterRAII(Stmt *S, llvm::DenseSet<Stmt *> &ParentStmts)
1595       : S(S), ParentStmts(ParentStmts) {
1596       ParentStmts.insert(S);
1597     }
1598     ~ParentStmtInserterRAII() {
1599       ParentStmts.erase(S);
1600     }
1601   };
1602 
1603   ParentStmtInserterRAII ParentStmtInserter(S, ParentStmts);
1604 #endif
1605 
1606   // Redirect ASTWriter::AddStmt to collect sub stmts.
1607   SmallVector<Stmt *, 16> SubStmts;
1608   CollectedStmts = &SubStmts;
1609 
1610   Writer.Code = serialization::STMT_NULL_PTR;
1611   Writer.AbbrevToUse = 0;
1612   Writer.Visit(S);
1613 
1614 #ifndef NDEBUG
1615   if (Writer.Code == serialization::STMT_NULL_PTR) {
1616     SourceManager &SrcMgr
1617       = DeclIDs.begin()->first->getASTContext().getSourceManager();
1618     S->dump(SrcMgr);
1619     llvm_unreachable("Unhandled sub statement writing AST file");
1620   }
1621 #endif
1622 
1623   // Revert ASTWriter::AddStmt.
1624   CollectedStmts = &StmtsToEmit;
1625 
1626   // Write the sub stmts in reverse order, last to first. When reading them back
1627   // we will read them in correct order by "pop"ing them from the Stmts stack.
1628   // This simplifies reading and allows to store a variable number of sub stmts
1629   // without knowing it in advance.
1630   while (!SubStmts.empty())
1631     WriteSubStmt(SubStmts.pop_back_val(), SubStmtEntries, ParentStmts);
1632 
1633   Stream.EmitRecord(Writer.Code, Record, Writer.AbbrevToUse);
1634 
1635   SubStmtEntries[S] = Stream.GetCurrentBitNo();
1636 }
1637 
1638 /// \brief Flush all of the statements that have been added to the
1639 /// queue via AddStmt().
1640 void ASTWriter::FlushStmts() {
1641   RecordData Record;
1642 
1643   // We expect to be the only consumer of the two temporary statement maps,
1644   // assert that they are empty.
1645   assert(SubStmtEntries.empty() && "unexpected entries in sub stmt map");
1646   assert(ParentStmts.empty() && "unexpected entries in parent stmt map");
1647 
1648   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
1649     WriteSubStmt(StmtsToEmit[I], SubStmtEntries, ParentStmts);
1650 
1651     assert(N == StmtsToEmit.size() &&
1652            "Substatement written via AddStmt rather than WriteSubStmt!");
1653 
1654     // Note that we are at the end of a full expression. Any
1655     // expression records that follow this one are part of a different
1656     // expression.
1657     Stream.EmitRecord(serialization::STMT_STOP, Record);
1658 
1659     SubStmtEntries.clear();
1660     ParentStmts.clear();
1661   }
1662 
1663   StmtsToEmit.clear();
1664 }
1665