ASTReaderStmt.cpp revision 4045107b7384fd68eed5e3e2f06fc2a47e7be0a6 
1//===--- ASTReaderStmt.cpp - Stmt/Expr Deserialization ----------*- C++ -*-===//
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// Statement/expression deserialization.  This implements the
11// ASTReader::ReadStmt method.
12//
13//===----------------------------------------------------------------------===//
14
15#include "clang/Serialization/ASTReader.h"
16#include "clang/AST/DeclCXX.h"
17#include "clang/AST/StmtVisitor.h"
18using namespace clang;
19using namespace clang::serialization;
20
21namespace clang {
22
23  class ASTStmtReader : public StmtVisitor<ASTStmtReader> {
24    ASTReader &Reader;
25    ASTReader::PerFileData &F;
26    llvm::BitstreamCursor &DeclsCursor;
27    const ASTReader::RecordData &Record;
28    unsigned &Idx;
29
30    SourceLocation ReadSourceLocation(const ASTReader::RecordData &R,
31                                      unsigned &I) {
32      return Reader.ReadSourceLocation(F, R, I);
33    }
34    SourceRange ReadSourceRange(const ASTReader::RecordData &R, unsigned &I) {
35      return Reader.ReadSourceRange(F, R, I);
36    }
37    TypeSourceInfo *GetTypeSourceInfo(const ASTReader::RecordData &R,
38                                      unsigned &I) {
39      return Reader.GetTypeSourceInfo(F, R, I);
40    }
41    void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name,
42                                const ASTReader::RecordData &R, unsigned &I) {
43      Reader.ReadDeclarationNameLoc(F, DNLoc, Name, R, I);
44    }
45    void ReadDeclarationNameInfo(DeclarationNameInfo &NameInfo,
46                                const ASTReader::RecordData &R, unsigned &I) {
47      Reader.ReadDeclarationNameInfo(F, NameInfo, R, I);
48    }
49
50  public:
51    ASTStmtReader(ASTReader &Reader, ASTReader::PerFileData &F,
52                  llvm::BitstreamCursor &Cursor,
53                  const ASTReader::RecordData &Record, unsigned &Idx)
54      : Reader(Reader), F(F), DeclsCursor(Cursor), Record(Record), Idx(Idx) { }
55
56    /// \brief The number of record fields required for the Stmt class
57    /// itself.
58    static const unsigned NumStmtFields = 0;
59
60    /// \brief The number of record fields required for the Expr class
61    /// itself.
62    static const unsigned NumExprFields = NumStmtFields + 3;
63
64    /// \brief Read and initialize a ExplicitTemplateArgumentList structure.
65    void ReadExplicitTemplateArgumentList(ExplicitTemplateArgumentList &ArgList,
66                                          unsigned NumTemplateArgs);
67
68    void VisitStmt(Stmt *S);
69    void VisitNullStmt(NullStmt *S);
70    void VisitCompoundStmt(CompoundStmt *S);
71    void VisitSwitchCase(SwitchCase *S);
72    void VisitCaseStmt(CaseStmt *S);
73    void VisitDefaultStmt(DefaultStmt *S);
74    void VisitLabelStmt(LabelStmt *S);
75    void VisitIfStmt(IfStmt *S);
76    void VisitSwitchStmt(SwitchStmt *S);
77    void VisitWhileStmt(WhileStmt *S);
78    void VisitDoStmt(DoStmt *S);
79    void VisitForStmt(ForStmt *S);
80    void VisitGotoStmt(GotoStmt *S);
81    void VisitIndirectGotoStmt(IndirectGotoStmt *S);
82    void VisitContinueStmt(ContinueStmt *S);
83    void VisitBreakStmt(BreakStmt *S);
84    void VisitReturnStmt(ReturnStmt *S);
85    void VisitDeclStmt(DeclStmt *S);
86    void VisitAsmStmt(AsmStmt *S);
87    void VisitExpr(Expr *E);
88    void VisitPredefinedExpr(PredefinedExpr *E);
89    void VisitDeclRefExpr(DeclRefExpr *E);
90    void VisitIntegerLiteral(IntegerLiteral *E);
91    void VisitFloatingLiteral(FloatingLiteral *E);
92    void VisitImaginaryLiteral(ImaginaryLiteral *E);
93    void VisitStringLiteral(StringLiteral *E);
94    void VisitCharacterLiteral(CharacterLiteral *E);
95    void VisitParenExpr(ParenExpr *E);
96    void VisitParenListExpr(ParenListExpr *E);
97    void VisitUnaryOperator(UnaryOperator *E);
98    void VisitOffsetOfExpr(OffsetOfExpr *E);
99    void VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E);
100    void VisitArraySubscriptExpr(ArraySubscriptExpr *E);
101    void VisitCallExpr(CallExpr *E);
102    void VisitMemberExpr(MemberExpr *E);
103    void VisitCastExpr(CastExpr *E);
104    void VisitBinaryOperator(BinaryOperator *E);
105    void VisitCompoundAssignOperator(CompoundAssignOperator *E);
106    void VisitConditionalOperator(ConditionalOperator *E);
107    void VisitImplicitCastExpr(ImplicitCastExpr *E);
108    void VisitExplicitCastExpr(ExplicitCastExpr *E);
109    void VisitCStyleCastExpr(CStyleCastExpr *E);
110    void VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
111    void VisitExtVectorElementExpr(ExtVectorElementExpr *E);
112    void VisitInitListExpr(InitListExpr *E);
113    void VisitDesignatedInitExpr(DesignatedInitExpr *E);
114    void VisitImplicitValueInitExpr(ImplicitValueInitExpr *E);
115    void VisitVAArgExpr(VAArgExpr *E);
116    void VisitAddrLabelExpr(AddrLabelExpr *E);
117    void VisitStmtExpr(StmtExpr *E);
118    void VisitTypesCompatibleExpr(TypesCompatibleExpr *E);
119    void VisitChooseExpr(ChooseExpr *E);
120    void VisitGNUNullExpr(GNUNullExpr *E);
121    void VisitShuffleVectorExpr(ShuffleVectorExpr *E);
122    void VisitBlockExpr(BlockExpr *E);
123    void VisitBlockDeclRefExpr(BlockDeclRefExpr *E);
124    void VisitObjCStringLiteral(ObjCStringLiteral *E);
125    void VisitObjCEncodeExpr(ObjCEncodeExpr *E);
126    void VisitObjCSelectorExpr(ObjCSelectorExpr *E);
127    void VisitObjCProtocolExpr(ObjCProtocolExpr *E);
128    void VisitObjCIvarRefExpr(ObjCIvarRefExpr *E);
129    void VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E);
130    void VisitObjCImplicitSetterGetterRefExpr(
131                            ObjCImplicitSetterGetterRefExpr *E);
132    void VisitObjCMessageExpr(ObjCMessageExpr *E);
133    void VisitObjCIsaExpr(ObjCIsaExpr *E);
134
135    void VisitObjCForCollectionStmt(ObjCForCollectionStmt *);
136    void VisitObjCAtCatchStmt(ObjCAtCatchStmt *);
137    void VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *);
138    void VisitObjCAtTryStmt(ObjCAtTryStmt *);
139    void VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *);
140    void VisitObjCAtThrowStmt(ObjCAtThrowStmt *);
141
142    // C++ Statements
143    void VisitCXXCatchStmt(CXXCatchStmt *S);
144    void VisitCXXTryStmt(CXXTryStmt *S);
145
146    void VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E);
147    void VisitCXXConstructExpr(CXXConstructExpr *E);
148    void VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E);
149    void VisitCXXNamedCastExpr(CXXNamedCastExpr *E);
150    void VisitCXXStaticCastExpr(CXXStaticCastExpr *E);
151    void VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E);
152    void VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E);
153    void VisitCXXConstCastExpr(CXXConstCastExpr *E);
154    void VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E);
155    void VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E);
156    void VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E);
157    void VisitCXXTypeidExpr(CXXTypeidExpr *E);
158    void VisitCXXUuidofExpr(CXXUuidofExpr *E);
159    void VisitCXXThisExpr(CXXThisExpr *E);
160    void VisitCXXThrowExpr(CXXThrowExpr *E);
161    void VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E);
162    void VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E);
163
164    void VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E);
165    void VisitCXXNewExpr(CXXNewExpr *E);
166    void VisitCXXDeleteExpr(CXXDeleteExpr *E);
167    void VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E);
168
169    void VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E);
170
171    void VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E);
172    void VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E);
173    void VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E);
174
175    void VisitOverloadExpr(OverloadExpr *E);
176    void VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E);
177    void VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E);
178
179    void VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E);
180    void VisitCXXNoexceptExpr(CXXNoexceptExpr *E);
181  };
182}
183
184void ASTStmtReader::
185ReadExplicitTemplateArgumentList(ExplicitTemplateArgumentList &ArgList,
186                                 unsigned NumTemplateArgs) {
187  TemplateArgumentListInfo ArgInfo;
188  ArgInfo.setLAngleLoc(ReadSourceLocation(Record, Idx));
189  ArgInfo.setRAngleLoc(ReadSourceLocation(Record, Idx));
190  for (unsigned i = 0; i != NumTemplateArgs; ++i)
191    ArgInfo.addArgument(
192        Reader.ReadTemplateArgumentLoc(F, Record, Idx));
193  ArgList.initializeFrom(ArgInfo);
194}
195
196void ASTStmtReader::VisitStmt(Stmt *S) {
197  assert(Idx == NumStmtFields && "Incorrect statement field count");
198}
199
200void ASTStmtReader::VisitNullStmt(NullStmt *S) {
201  VisitStmt(S);
202  S->setSemiLoc(ReadSourceLocation(Record, Idx));
203}
204
205void ASTStmtReader::VisitCompoundStmt(CompoundStmt *S) {
206  VisitStmt(S);
207  llvm::SmallVector<Stmt *, 16> Stmts;
208  unsigned NumStmts = Record[Idx++];
209  while (NumStmts--)
210    Stmts.push_back(Reader.ReadSubStmt());
211  S->setStmts(*Reader.getContext(), Stmts.data(), Stmts.size());
212  S->setLBracLoc(ReadSourceLocation(Record, Idx));
213  S->setRBracLoc(ReadSourceLocation(Record, Idx));
214}
215
216void ASTStmtReader::VisitSwitchCase(SwitchCase *S) {
217  VisitStmt(S);
218  Reader.RecordSwitchCaseID(S, Record[Idx++]);
219}
220
221void ASTStmtReader::VisitCaseStmt(CaseStmt *S) {
222  VisitSwitchCase(S);
223  S->setLHS(Reader.ReadSubExpr());
224  S->setRHS(Reader.ReadSubExpr());
225  S->setSubStmt(Reader.ReadSubStmt());
226  S->setCaseLoc(ReadSourceLocation(Record, Idx));
227  S->setEllipsisLoc(ReadSourceLocation(Record, Idx));
228  S->setColonLoc(ReadSourceLocation(Record, Idx));
229}
230
231void ASTStmtReader::VisitDefaultStmt(DefaultStmt *S) {
232  VisitSwitchCase(S);
233  S->setSubStmt(Reader.ReadSubStmt());
234  S->setDefaultLoc(ReadSourceLocation(Record, Idx));
235  S->setColonLoc(ReadSourceLocation(Record, Idx));
236}
237
238void ASTStmtReader::VisitLabelStmt(LabelStmt *S) {
239  VisitStmt(S);
240  S->setID(Reader.GetIdentifierInfo(Record, Idx));
241  S->setSubStmt(Reader.ReadSubStmt());
242  S->setIdentLoc(ReadSourceLocation(Record, Idx));
243  S->setUsed(Record[Idx++]);
244  S->setUnusedAttribute(Record[Idx++]);
245  Reader.RecordLabelStmt(S, Record[Idx++]);
246}
247
248void ASTStmtReader::VisitIfStmt(IfStmt *S) {
249  VisitStmt(S);
250  S->setConditionVariable(*Reader.getContext(),
251                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
252  S->setCond(Reader.ReadSubExpr());
253  S->setThen(Reader.ReadSubStmt());
254  S->setElse(Reader.ReadSubStmt());
255  S->setIfLoc(ReadSourceLocation(Record, Idx));
256  S->setElseLoc(ReadSourceLocation(Record, Idx));
257}
258
259void ASTStmtReader::VisitSwitchStmt(SwitchStmt *S) {
260  VisitStmt(S);
261  S->setConditionVariable(*Reader.getContext(),
262                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
263  S->setCond(Reader.ReadSubExpr());
264  S->setBody(Reader.ReadSubStmt());
265  S->setSwitchLoc(ReadSourceLocation(Record, Idx));
266  if (Record[Idx++])
267    S->setAllEnumCasesCovered();
268
269  SwitchCase *PrevSC = 0;
270  for (unsigned N = Record.size(); Idx != N; ++Idx) {
271    SwitchCase *SC = Reader.getSwitchCaseWithID(Record[Idx]);
272    if (PrevSC)
273      PrevSC->setNextSwitchCase(SC);
274    else
275      S->setSwitchCaseList(SC);
276
277    // Retain this SwitchCase, since SwitchStmt::addSwitchCase() would
278    // normally retain it (but we aren't calling addSwitchCase).
279    SC->Retain();
280    PrevSC = SC;
281  }
282}
283
284void ASTStmtReader::VisitWhileStmt(WhileStmt *S) {
285  VisitStmt(S);
286  S->setConditionVariable(*Reader.getContext(),
287                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
288  S->setCond(Reader.ReadSubExpr());
289  S->setBody(Reader.ReadSubStmt());
290  S->setWhileLoc(ReadSourceLocation(Record, Idx));
291}
292
293void ASTStmtReader::VisitDoStmt(DoStmt *S) {
294  VisitStmt(S);
295  S->setCond(Reader.ReadSubExpr());
296  S->setBody(Reader.ReadSubStmt());
297  S->setDoLoc(ReadSourceLocation(Record, Idx));
298  S->setWhileLoc(ReadSourceLocation(Record, Idx));
299  S->setRParenLoc(ReadSourceLocation(Record, Idx));
300}
301
302void ASTStmtReader::VisitForStmt(ForStmt *S) {
303  VisitStmt(S);
304  S->setInit(Reader.ReadSubStmt());
305  S->setCond(Reader.ReadSubExpr());
306  S->setConditionVariable(*Reader.getContext(),
307                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
308  S->setInc(Reader.ReadSubExpr());
309  S->setBody(Reader.ReadSubStmt());
310  S->setForLoc(ReadSourceLocation(Record, Idx));
311  S->setLParenLoc(ReadSourceLocation(Record, Idx));
312  S->setRParenLoc(ReadSourceLocation(Record, Idx));
313}
314
315void ASTStmtReader::VisitGotoStmt(GotoStmt *S) {
316  VisitStmt(S);
317  Reader.SetLabelOf(S, Record[Idx++]);
318  S->setGotoLoc(ReadSourceLocation(Record, Idx));
319  S->setLabelLoc(ReadSourceLocation(Record, Idx));
320}
321
322void ASTStmtReader::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
323  VisitStmt(S);
324  S->setGotoLoc(ReadSourceLocation(Record, Idx));
325  S->setStarLoc(ReadSourceLocation(Record, Idx));
326  S->setTarget(Reader.ReadSubExpr());
327}
328
329void ASTStmtReader::VisitContinueStmt(ContinueStmt *S) {
330  VisitStmt(S);
331  S->setContinueLoc(ReadSourceLocation(Record, Idx));
332}
333
334void ASTStmtReader::VisitBreakStmt(BreakStmt *S) {
335  VisitStmt(S);
336  S->setBreakLoc(ReadSourceLocation(Record, Idx));
337}
338
339void ASTStmtReader::VisitReturnStmt(ReturnStmt *S) {
340  VisitStmt(S);
341  S->setRetValue(Reader.ReadSubExpr());
342  S->setReturnLoc(ReadSourceLocation(Record, Idx));
343  S->setNRVOCandidate(cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
344}
345
346void ASTStmtReader::VisitDeclStmt(DeclStmt *S) {
347  VisitStmt(S);
348  S->setStartLoc(ReadSourceLocation(Record, Idx));
349  S->setEndLoc(ReadSourceLocation(Record, Idx));
350
351  if (Idx + 1 == Record.size()) {
352    // Single declaration
353    S->setDeclGroup(DeclGroupRef(Reader.GetDecl(Record[Idx++])));
354  } else {
355    llvm::SmallVector<Decl *, 16> Decls;
356    Decls.reserve(Record.size() - Idx);
357    for (unsigned N = Record.size(); Idx != N; ++Idx)
358      Decls.push_back(Reader.GetDecl(Record[Idx]));
359    S->setDeclGroup(DeclGroupRef(DeclGroup::Create(*Reader.getContext(),
360                                                   Decls.data(),
361                                                   Decls.size())));
362  }
363}
364
365void ASTStmtReader::VisitAsmStmt(AsmStmt *S) {
366  VisitStmt(S);
367  unsigned NumOutputs = Record[Idx++];
368  unsigned NumInputs = Record[Idx++];
369  unsigned NumClobbers = Record[Idx++];
370  S->setAsmLoc(ReadSourceLocation(Record, Idx));
371  S->setRParenLoc(ReadSourceLocation(Record, Idx));
372  S->setVolatile(Record[Idx++]);
373  S->setSimple(Record[Idx++]);
374  S->setMSAsm(Record[Idx++]);
375
376  S->setAsmString(cast_or_null<StringLiteral>(Reader.ReadSubStmt()));
377
378  // Outputs and inputs
379  llvm::SmallVector<IdentifierInfo *, 16> Names;
380  llvm::SmallVector<StringLiteral*, 16> Constraints;
381  llvm::SmallVector<Stmt*, 16> Exprs;
382  for (unsigned I = 0, N = NumOutputs + NumInputs; I != N; ++I) {
383    Names.push_back(Reader.GetIdentifierInfo(Record, Idx));
384    Constraints.push_back(cast_or_null<StringLiteral>(Reader.ReadSubStmt()));
385    Exprs.push_back(Reader.ReadSubStmt());
386  }
387
388  // Constraints
389  llvm::SmallVector<StringLiteral*, 16> Clobbers;
390  for (unsigned I = 0; I != NumClobbers; ++I)
391    Clobbers.push_back(cast_or_null<StringLiteral>(Reader.ReadSubStmt()));
392
393  S->setOutputsAndInputsAndClobbers(*Reader.getContext(),
394                                    Names.data(), Constraints.data(),
395                                    Exprs.data(), NumOutputs, NumInputs,
396                                    Clobbers.data(), NumClobbers);
397}
398
399void ASTStmtReader::VisitExpr(Expr *E) {
400  VisitStmt(E);
401  E->setType(Reader.GetType(Record[Idx++]));
402  E->setTypeDependent(Record[Idx++]);
403  E->setValueDependent(Record[Idx++]);
404  assert(Idx == NumExprFields && "Incorrect expression field count");
405}
406
407void ASTStmtReader::VisitPredefinedExpr(PredefinedExpr *E) {
408  VisitExpr(E);
409  E->setLocation(ReadSourceLocation(Record, Idx));
410  E->setIdentType((PredefinedExpr::IdentType)Record[Idx++]);
411}
412
413void ASTStmtReader::VisitDeclRefExpr(DeclRefExpr *E) {
414  VisitExpr(E);
415
416  bool HasQualifier = Record[Idx++];
417  unsigned NumTemplateArgs = Record[Idx++];
418
419  E->DecoratedD.setInt((HasQualifier? DeclRefExpr::HasQualifierFlag : 0) |
420      (NumTemplateArgs ? DeclRefExpr::HasExplicitTemplateArgumentListFlag : 0));
421
422  if (HasQualifier) {
423    E->getNameQualifier()->NNS = Reader.ReadNestedNameSpecifier(Record, Idx);
424    E->getNameQualifier()->Range = ReadSourceRange(Record, Idx);
425  }
426
427  if (NumTemplateArgs)
428    ReadExplicitTemplateArgumentList(E->getExplicitTemplateArgs(),
429                                     NumTemplateArgs);
430
431  E->setDecl(cast<ValueDecl>(Reader.GetDecl(Record[Idx++])));
432  E->setLocation(ReadSourceLocation(Record, Idx));
433  ReadDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName(), Record, Idx);
434}
435
436void ASTStmtReader::VisitIntegerLiteral(IntegerLiteral *E) {
437  VisitExpr(E);
438  E->setLocation(ReadSourceLocation(Record, Idx));
439  E->setValue(*Reader.getContext(), Reader.ReadAPInt(Record, Idx));
440}
441
442void ASTStmtReader::VisitFloatingLiteral(FloatingLiteral *E) {
443  VisitExpr(E);
444  E->setValue(*Reader.getContext(), Reader.ReadAPFloat(Record, Idx));
445  E->setExact(Record[Idx++]);
446  E->setLocation(ReadSourceLocation(Record, Idx));
447}
448
449void ASTStmtReader::VisitImaginaryLiteral(ImaginaryLiteral *E) {
450  VisitExpr(E);
451  E->setSubExpr(Reader.ReadSubExpr());
452}
453
454void ASTStmtReader::VisitStringLiteral(StringLiteral *E) {
455  VisitExpr(E);
456  unsigned Len = Record[Idx++];
457  assert(Record[Idx] == E->getNumConcatenated() &&
458         "Wrong number of concatenated tokens!");
459  ++Idx;
460  E->setWide(Record[Idx++]);
461
462  // Read string data
463  llvm::SmallString<16> Str(&Record[Idx], &Record[Idx] + Len);
464  E->setString(*Reader.getContext(), Str.str());
465  Idx += Len;
466
467  // Read source locations
468  for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
469    E->setStrTokenLoc(I, ReadSourceLocation(Record, Idx));
470}
471
472void ASTStmtReader::VisitCharacterLiteral(CharacterLiteral *E) {
473  VisitExpr(E);
474  E->setValue(Record[Idx++]);
475  E->setLocation(ReadSourceLocation(Record, Idx));
476  E->setWide(Record[Idx++]);
477}
478
479void ASTStmtReader::VisitParenExpr(ParenExpr *E) {
480  VisitExpr(E);
481  E->setLParen(ReadSourceLocation(Record, Idx));
482  E->setRParen(ReadSourceLocation(Record, Idx));
483  E->setSubExpr(Reader.ReadSubExpr());
484}
485
486void ASTStmtReader::VisitParenListExpr(ParenListExpr *E) {
487  VisitExpr(E);
488  unsigned NumExprs = Record[Idx++];
489  E->Exprs = new (*Reader.getContext()) Stmt*[NumExprs];
490  for (unsigned i = 0; i != NumExprs; ++i)
491    E->Exprs[i] = Reader.ReadSubStmt();
492  E->NumExprs = NumExprs;
493  E->LParenLoc = ReadSourceLocation(Record, Idx);
494  E->RParenLoc = ReadSourceLocation(Record, Idx);
495}
496
497void ASTStmtReader::VisitUnaryOperator(UnaryOperator *E) {
498  VisitExpr(E);
499  E->setSubExpr(Reader.ReadSubExpr());
500  E->setOpcode((UnaryOperator::Opcode)Record[Idx++]);
501  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
502}
503
504void ASTStmtReader::VisitOffsetOfExpr(OffsetOfExpr *E) {
505  typedef OffsetOfExpr::OffsetOfNode Node;
506  VisitExpr(E);
507  assert(E->getNumComponents() == Record[Idx]);
508  ++Idx;
509  assert(E->getNumExpressions() == Record[Idx]);
510  ++Idx;
511  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
512  E->setRParenLoc(ReadSourceLocation(Record, Idx));
513  E->setTypeSourceInfo(GetTypeSourceInfo(Record, Idx));
514  for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
515    Node::Kind Kind = static_cast<Node::Kind>(Record[Idx++]);
516    SourceLocation Start = ReadSourceLocation(Record, Idx);
517    SourceLocation End = ReadSourceLocation(Record, Idx);
518    switch (Kind) {
519    case Node::Array:
520      E->setComponent(I, Node(Start, Record[Idx++], End));
521      break;
522
523    case Node::Field:
524      E->setComponent(I,
525             Node(Start,
526                  dyn_cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++])),
527                  End));
528      break;
529
530    case Node::Identifier:
531      E->setComponent(I, Node(Start, Reader.GetIdentifier(Record[Idx++]), End));
532      break;
533
534    case Node::Base: {
535      CXXBaseSpecifier *Base = new (*Reader.getContext()) CXXBaseSpecifier();
536      *Base = Reader.ReadCXXBaseSpecifier(F, Record, Idx);
537      E->setComponent(I, Node(Base));
538      break;
539    }
540    }
541  }
542
543  for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
544    E->setIndexExpr(I, Reader.ReadSubExpr());
545}
546
547void ASTStmtReader::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E) {
548  VisitExpr(E);
549  E->setSizeof(Record[Idx++]);
550  if (Record[Idx] == 0) {
551    E->setArgument(Reader.ReadSubExpr());
552    ++Idx;
553  } else {
554    E->setArgument(GetTypeSourceInfo(Record, Idx));
555  }
556  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
557  E->setRParenLoc(ReadSourceLocation(Record, Idx));
558}
559
560void ASTStmtReader::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
561  VisitExpr(E);
562  E->setLHS(Reader.ReadSubExpr());
563  E->setRHS(Reader.ReadSubExpr());
564  E->setRBracketLoc(ReadSourceLocation(Record, Idx));
565}
566
567void ASTStmtReader::VisitCallExpr(CallExpr *E) {
568  VisitExpr(E);
569  E->setNumArgs(*Reader.getContext(), Record[Idx++]);
570  E->setRParenLoc(ReadSourceLocation(Record, Idx));
571  E->setCallee(Reader.ReadSubExpr());
572  for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
573    E->setArg(I, Reader.ReadSubExpr());
574}
575
576void ASTStmtReader::VisitMemberExpr(MemberExpr *E) {
577  // Don't call VisitExpr, this is fully initialized at creation.
578  assert(E->getStmtClass() == Stmt::MemberExprClass &&
579         "It's a subclass, we must advance Idx!");
580}
581
582void ASTStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
583  VisitExpr(E);
584  E->setBase(Reader.ReadSubExpr());
585  E->setIsaMemberLoc(ReadSourceLocation(Record, Idx));
586  E->setArrow(Record[Idx++]);
587}
588
589void ASTStmtReader::VisitCastExpr(CastExpr *E) {
590  VisitExpr(E);
591  unsigned NumBaseSpecs = Record[Idx++];
592  assert(NumBaseSpecs == E->path_size());
593  E->setSubExpr(Reader.ReadSubExpr());
594  E->setCastKind((CastExpr::CastKind)Record[Idx++]);
595  CastExpr::path_iterator BaseI = E->path_begin();
596  while (NumBaseSpecs--) {
597    CXXBaseSpecifier *BaseSpec = new (*Reader.getContext()) CXXBaseSpecifier;
598    *BaseSpec = Reader.ReadCXXBaseSpecifier(F, Record, Idx);
599    *BaseI++ = BaseSpec;
600  }
601}
602
603void ASTStmtReader::VisitBinaryOperator(BinaryOperator *E) {
604  VisitExpr(E);
605  E->setLHS(Reader.ReadSubExpr());
606  E->setRHS(Reader.ReadSubExpr());
607  E->setOpcode((BinaryOperator::Opcode)Record[Idx++]);
608  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
609}
610
611void ASTStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
612  VisitBinaryOperator(E);
613  E->setComputationLHSType(Reader.GetType(Record[Idx++]));
614  E->setComputationResultType(Reader.GetType(Record[Idx++]));
615}
616
617void ASTStmtReader::VisitConditionalOperator(ConditionalOperator *E) {
618  VisitExpr(E);
619  E->setCond(Reader.ReadSubExpr());
620  E->setLHS(Reader.ReadSubExpr());
621  E->setRHS(Reader.ReadSubExpr());
622  E->setSAVE(Reader.ReadSubExpr());
623  E->setQuestionLoc(ReadSourceLocation(Record, Idx));
624  E->setColonLoc(ReadSourceLocation(Record, Idx));
625}
626
627void ASTStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
628  VisitCastExpr(E);
629  E->setValueKind(static_cast<ExprValueKind>(Record[Idx++]));
630}
631
632void ASTStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {
633  VisitCastExpr(E);
634  E->setTypeInfoAsWritten(GetTypeSourceInfo(Record, Idx));
635}
636
637void ASTStmtReader::VisitCStyleCastExpr(CStyleCastExpr *E) {
638  VisitExplicitCastExpr(E);
639  E->setLParenLoc(ReadSourceLocation(Record, Idx));
640  E->setRParenLoc(ReadSourceLocation(Record, Idx));
641}
642
643void ASTStmtReader::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
644  VisitExpr(E);
645  E->setLParenLoc(ReadSourceLocation(Record, Idx));
646  E->setTypeSourceInfo(GetTypeSourceInfo(Record, Idx));
647  E->setInitializer(Reader.ReadSubExpr());
648  E->setFileScope(Record[Idx++]);
649}
650
651void ASTStmtReader::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
652  VisitExpr(E);
653  E->setBase(Reader.ReadSubExpr());
654  E->setAccessor(Reader.GetIdentifierInfo(Record, Idx));
655  E->setAccessorLoc(ReadSourceLocation(Record, Idx));
656}
657
658void ASTStmtReader::VisitInitListExpr(InitListExpr *E) {
659  VisitExpr(E);
660  unsigned NumInits = Record[Idx++];
661  E->reserveInits(*Reader.getContext(), NumInits);
662  for (unsigned I = 0; I != NumInits; ++I)
663    E->updateInit(*Reader.getContext(), I, Reader.ReadSubExpr());
664  E->setSyntacticForm(cast_or_null<InitListExpr>(Reader.ReadSubStmt()));
665  E->setLBraceLoc(ReadSourceLocation(Record, Idx));
666  E->setRBraceLoc(ReadSourceLocation(Record, Idx));
667  E->setInitializedFieldInUnion(
668                      cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++])));
669  E->sawArrayRangeDesignator(Record[Idx++]);
670}
671
672void ASTStmtReader::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
673  typedef DesignatedInitExpr::Designator Designator;
674
675  VisitExpr(E);
676  unsigned NumSubExprs = Record[Idx++];
677  assert(NumSubExprs == E->getNumSubExprs() && "Wrong number of subexprs");
678  for (unsigned I = 0; I != NumSubExprs; ++I)
679    E->setSubExpr(I, Reader.ReadSubExpr());
680  E->setEqualOrColonLoc(ReadSourceLocation(Record, Idx));
681  E->setGNUSyntax(Record[Idx++]);
682
683  llvm::SmallVector<Designator, 4> Designators;
684  while (Idx < Record.size()) {
685    switch ((DesignatorTypes)Record[Idx++]) {
686    case DESIG_FIELD_DECL: {
687      FieldDecl *Field = cast<FieldDecl>(Reader.GetDecl(Record[Idx++]));
688      SourceLocation DotLoc
689        = ReadSourceLocation(Record, Idx);
690      SourceLocation FieldLoc
691        = ReadSourceLocation(Record, Idx);
692      Designators.push_back(Designator(Field->getIdentifier(), DotLoc,
693                                       FieldLoc));
694      Designators.back().setField(Field);
695      break;
696    }
697
698    case DESIG_FIELD_NAME: {
699      const IdentifierInfo *Name = Reader.GetIdentifierInfo(Record, Idx);
700      SourceLocation DotLoc
701        = ReadSourceLocation(Record, Idx);
702      SourceLocation FieldLoc
703        = ReadSourceLocation(Record, Idx);
704      Designators.push_back(Designator(Name, DotLoc, FieldLoc));
705      break;
706    }
707
708    case DESIG_ARRAY: {
709      unsigned Index = Record[Idx++];
710      SourceLocation LBracketLoc
711        = ReadSourceLocation(Record, Idx);
712      SourceLocation RBracketLoc
713        = ReadSourceLocation(Record, Idx);
714      Designators.push_back(Designator(Index, LBracketLoc, RBracketLoc));
715      break;
716    }
717
718    case DESIG_ARRAY_RANGE: {
719      unsigned Index = Record[Idx++];
720      SourceLocation LBracketLoc
721        = ReadSourceLocation(Record, Idx);
722      SourceLocation EllipsisLoc
723        = ReadSourceLocation(Record, Idx);
724      SourceLocation RBracketLoc
725        = ReadSourceLocation(Record, Idx);
726      Designators.push_back(Designator(Index, LBracketLoc, EllipsisLoc,
727                                       RBracketLoc));
728      break;
729    }
730    }
731  }
732  E->setDesignators(*Reader.getContext(),
733                    Designators.data(), Designators.size());
734}
735
736void ASTStmtReader::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
737  VisitExpr(E);
738}
739
740void ASTStmtReader::VisitVAArgExpr(VAArgExpr *E) {
741  VisitExpr(E);
742  E->setSubExpr(Reader.ReadSubExpr());
743  E->setWrittenTypeInfo(GetTypeSourceInfo(Record, Idx));
744  E->setBuiltinLoc(ReadSourceLocation(Record, Idx));
745  E->setRParenLoc(ReadSourceLocation(Record, Idx));
746}
747
748void ASTStmtReader::VisitAddrLabelExpr(AddrLabelExpr *E) {
749  VisitExpr(E);
750  E->setAmpAmpLoc(ReadSourceLocation(Record, Idx));
751  E->setLabelLoc(ReadSourceLocation(Record, Idx));
752  Reader.SetLabelOf(E, Record[Idx++]);
753}
754
755void ASTStmtReader::VisitStmtExpr(StmtExpr *E) {
756  VisitExpr(E);
757  E->setLParenLoc(ReadSourceLocation(Record, Idx));
758  E->setRParenLoc(ReadSourceLocation(Record, Idx));
759  E->setSubStmt(cast_or_null<CompoundStmt>(Reader.ReadSubStmt()));
760}
761
762void ASTStmtReader::VisitTypesCompatibleExpr(TypesCompatibleExpr *E) {
763  VisitExpr(E);
764  E->setArgTInfo1(GetTypeSourceInfo(Record, Idx));
765  E->setArgTInfo2(GetTypeSourceInfo(Record, Idx));
766  E->setBuiltinLoc(ReadSourceLocation(Record, Idx));
767  E->setRParenLoc(ReadSourceLocation(Record, Idx));
768}
769
770void ASTStmtReader::VisitChooseExpr(ChooseExpr *E) {
771  VisitExpr(E);
772  E->setCond(Reader.ReadSubExpr());
773  E->setLHS(Reader.ReadSubExpr());
774  E->setRHS(Reader.ReadSubExpr());
775  E->setBuiltinLoc(ReadSourceLocation(Record, Idx));
776  E->setRParenLoc(ReadSourceLocation(Record, Idx));
777}
778
779void ASTStmtReader::VisitGNUNullExpr(GNUNullExpr *E) {
780  VisitExpr(E);
781  E->setTokenLocation(ReadSourceLocation(Record, Idx));
782}
783
784void ASTStmtReader::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
785  VisitExpr(E);
786  llvm::SmallVector<Expr *, 16> Exprs;
787  unsigned NumExprs = Record[Idx++];
788  while (NumExprs--)
789    Exprs.push_back(Reader.ReadSubExpr());
790  E->setExprs(*Reader.getContext(), Exprs.data(), Exprs.size());
791  E->setBuiltinLoc(ReadSourceLocation(Record, Idx));
792  E->setRParenLoc(ReadSourceLocation(Record, Idx));
793}
794
795void ASTStmtReader::VisitBlockExpr(BlockExpr *E) {
796  VisitExpr(E);
797  E->setBlockDecl(cast_or_null<BlockDecl>(Reader.GetDecl(Record[Idx++])));
798  E->setHasBlockDeclRefExprs(Record[Idx++]);
799}
800
801void ASTStmtReader::VisitBlockDeclRefExpr(BlockDeclRefExpr *E) {
802  VisitExpr(E);
803  E->setDecl(cast<ValueDecl>(Reader.GetDecl(Record[Idx++])));
804  E->setLocation(ReadSourceLocation(Record, Idx));
805  E->setByRef(Record[Idx++]);
806  E->setConstQualAdded(Record[Idx++]);
807  E->setCopyConstructorExpr(Reader.ReadSubExpr());
808}
809
810//===----------------------------------------------------------------------===//
811// Objective-C Expressions and Statements
812
813void ASTStmtReader::VisitObjCStringLiteral(ObjCStringLiteral *E) {
814  VisitExpr(E);
815  E->setString(cast<StringLiteral>(Reader.ReadSubStmt()));
816  E->setAtLoc(ReadSourceLocation(Record, Idx));
817}
818
819void ASTStmtReader::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
820  VisitExpr(E);
821  E->setEncodedTypeSourceInfo(GetTypeSourceInfo(Record, Idx));
822  E->setAtLoc(ReadSourceLocation(Record, Idx));
823  E->setRParenLoc(ReadSourceLocation(Record, Idx));
824}
825
826void ASTStmtReader::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
827  VisitExpr(E);
828  E->setSelector(Reader.GetSelector(Record, Idx));
829  E->setAtLoc(ReadSourceLocation(Record, Idx));
830  E->setRParenLoc(ReadSourceLocation(Record, Idx));
831}
832
833void ASTStmtReader::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
834  VisitExpr(E);
835  E->setProtocol(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
836  E->setAtLoc(ReadSourceLocation(Record, Idx));
837  E->setRParenLoc(ReadSourceLocation(Record, Idx));
838}
839
840void ASTStmtReader::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
841  VisitExpr(E);
842  E->setDecl(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
843  E->setLocation(ReadSourceLocation(Record, Idx));
844  E->setBase(Reader.ReadSubExpr());
845  E->setIsArrow(Record[Idx++]);
846  E->setIsFreeIvar(Record[Idx++]);
847}
848
849void ASTStmtReader::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
850  VisitExpr(E);
851  E->setProperty(cast<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
852  E->setLocation(ReadSourceLocation(Record, Idx));
853  E->SuperLoc = ReadSourceLocation(Record, Idx);
854  if (E->isSuperReceiver()) {
855    QualType T = Reader.GetType(Record[Idx++]);
856    E->BaseExprOrSuperType = T.getTypePtr();
857  }
858  else
859    E->setBase(Reader.ReadSubExpr());
860}
861
862void ASTStmtReader::VisitObjCImplicitSetterGetterRefExpr(
863                                      ObjCImplicitSetterGetterRefExpr *E) {
864  VisitExpr(E);
865  E->setGetterMethod(
866                 cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
867  E->setSetterMethod(
868                 cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
869  E->setInterfaceDecl(
870              cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
871  E->setBase(Reader.ReadSubExpr());
872  E->setLocation(ReadSourceLocation(Record, Idx));
873  E->setClassLoc(ReadSourceLocation(Record, Idx));
874  E->SuperLoc = ReadSourceLocation(Record, Idx);
875  E->SuperTy = Reader.GetType(Record[Idx++]);
876  E->IsSuper = Record[Idx++];
877}
878
879void ASTStmtReader::VisitObjCMessageExpr(ObjCMessageExpr *E) {
880  VisitExpr(E);
881  assert(Record[Idx] == E->getNumArgs());
882  ++Idx;
883  ObjCMessageExpr::ReceiverKind Kind
884    = static_cast<ObjCMessageExpr::ReceiverKind>(Record[Idx++]);
885  switch (Kind) {
886  case ObjCMessageExpr::Instance:
887    E->setInstanceReceiver(Reader.ReadSubExpr());
888    break;
889
890  case ObjCMessageExpr::Class:
891    E->setClassReceiver(GetTypeSourceInfo(Record, Idx));
892    break;
893
894  case ObjCMessageExpr::SuperClass:
895  case ObjCMessageExpr::SuperInstance: {
896    QualType T = Reader.GetType(Record[Idx++]);
897    SourceLocation SuperLoc = ReadSourceLocation(Record, Idx);
898    E->setSuper(SuperLoc, T, Kind == ObjCMessageExpr::SuperInstance);
899    break;
900  }
901  }
902
903  assert(Kind == E->getReceiverKind());
904
905  if (Record[Idx++])
906    E->setMethodDecl(cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
907  else
908    E->setSelector(Reader.GetSelector(Record, Idx));
909
910  E->setLeftLoc(ReadSourceLocation(Record, Idx));
911  E->setRightLoc(ReadSourceLocation(Record, Idx));
912
913  for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
914    E->setArg(I, Reader.ReadSubExpr());
915}
916
917void ASTStmtReader::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
918  VisitStmt(S);
919  S->setElement(Reader.ReadSubStmt());
920  S->setCollection(Reader.ReadSubExpr());
921  S->setBody(Reader.ReadSubStmt());
922  S->setForLoc(ReadSourceLocation(Record, Idx));
923  S->setRParenLoc(ReadSourceLocation(Record, Idx));
924}
925
926void ASTStmtReader::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
927  VisitStmt(S);
928  S->setCatchBody(Reader.ReadSubStmt());
929  S->setCatchParamDecl(cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
930  S->setAtCatchLoc(ReadSourceLocation(Record, Idx));
931  S->setRParenLoc(ReadSourceLocation(Record, Idx));
932}
933
934void ASTStmtReader::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
935  VisitStmt(S);
936  S->setFinallyBody(Reader.ReadSubStmt());
937  S->setAtFinallyLoc(ReadSourceLocation(Record, Idx));
938}
939
940void ASTStmtReader::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
941  VisitStmt(S);
942  assert(Record[Idx] == S->getNumCatchStmts());
943  ++Idx;
944  bool HasFinally = Record[Idx++];
945  S->setTryBody(Reader.ReadSubStmt());
946  for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
947    S->setCatchStmt(I, cast_or_null<ObjCAtCatchStmt>(Reader.ReadSubStmt()));
948
949  if (HasFinally)
950    S->setFinallyStmt(Reader.ReadSubStmt());
951  S->setAtTryLoc(ReadSourceLocation(Record, Idx));
952}
953
954void ASTStmtReader::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
955  VisitStmt(S);
956  S->setSynchExpr(Reader.ReadSubStmt());
957  S->setSynchBody(Reader.ReadSubStmt());
958  S->setAtSynchronizedLoc(ReadSourceLocation(Record, Idx));
959}
960
961void ASTStmtReader::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
962  VisitStmt(S);
963  S->setThrowExpr(Reader.ReadSubStmt());
964  S->setThrowLoc(ReadSourceLocation(Record, Idx));
965}
966
967//===----------------------------------------------------------------------===//
968// C++ Expressions and Statements
969//===----------------------------------------------------------------------===//
970
971void ASTStmtReader::VisitCXXCatchStmt(CXXCatchStmt *S) {
972  VisitStmt(S);
973  S->CatchLoc = ReadSourceLocation(Record, Idx);
974  S->ExceptionDecl = cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++]));
975  S->HandlerBlock = Reader.ReadSubStmt();
976}
977
978void ASTStmtReader::VisitCXXTryStmt(CXXTryStmt *S) {
979  VisitStmt(S);
980  assert(Record[Idx] == S->getNumHandlers() && "NumStmtFields is wrong ?");
981  ++Idx;
982  S->TryLoc = ReadSourceLocation(Record, Idx);
983  S->getStmts()[0] = Reader.ReadSubStmt();
984  for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
985    S->getStmts()[i + 1] = Reader.ReadSubStmt();
986}
987
988void ASTStmtReader::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
989  VisitCallExpr(E);
990  E->setOperator((OverloadedOperatorKind)Record[Idx++]);
991}
992
993void ASTStmtReader::VisitCXXConstructExpr(CXXConstructExpr *E) {
994  VisitExpr(E);
995  E->NumArgs = Record[Idx++];
996  if (E->NumArgs)
997    E->Args = new (*Reader.getContext()) Stmt*[E->NumArgs];
998  for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
999    E->setArg(I, Reader.ReadSubExpr());
1000  E->setConstructor(cast<CXXConstructorDecl>(Reader.GetDecl(Record[Idx++])));
1001  E->setLocation(ReadSourceLocation(Record, Idx));
1002  E->setElidable(Record[Idx++]);
1003  E->setRequiresZeroInitialization(Record[Idx++]);
1004  E->setConstructionKind((CXXConstructExpr::ConstructionKind)Record[Idx++]);
1005}
1006
1007void ASTStmtReader::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1008  VisitCXXConstructExpr(E);
1009  E->Type = GetTypeSourceInfo(Record, Idx);
1010  E->RParenLoc = ReadSourceLocation(Record, Idx);
1011}
1012
1013void ASTStmtReader::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1014  VisitExplicitCastExpr(E);
1015  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
1016}
1017
1018void ASTStmtReader::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1019  return VisitCXXNamedCastExpr(E);
1020}
1021
1022void ASTStmtReader::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1023  return VisitCXXNamedCastExpr(E);
1024}
1025
1026void ASTStmtReader::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1027  return VisitCXXNamedCastExpr(E);
1028}
1029
1030void ASTStmtReader::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1031  return VisitCXXNamedCastExpr(E);
1032}
1033
1034void ASTStmtReader::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1035  VisitExplicitCastExpr(E);
1036  E->setTypeBeginLoc(ReadSourceLocation(Record, Idx));
1037  E->setRParenLoc(ReadSourceLocation(Record, Idx));
1038}
1039
1040void ASTStmtReader::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1041  VisitExpr(E);
1042  E->setValue(Record[Idx++]);
1043  E->setLocation(ReadSourceLocation(Record, Idx));
1044}
1045
1046void ASTStmtReader::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1047  VisitExpr(E);
1048  E->setLocation(ReadSourceLocation(Record, Idx));
1049}
1050
1051void ASTStmtReader::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1052  VisitExpr(E);
1053  E->setSourceRange(ReadSourceRange(Record, Idx));
1054  if (E->isTypeOperand()) { // typeid(int)
1055    E->setTypeOperandSourceInfo(
1056        GetTypeSourceInfo(Record, Idx));
1057    return;
1058  }
1059
1060  // typeid(42+2)
1061  E->setExprOperand(Reader.ReadSubExpr());
1062}
1063void ASTStmtReader::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
1064  VisitExpr(E);
1065  E->setSourceRange(ReadSourceRange(Record, Idx));
1066  if (E->isTypeOperand()) { // __uuidof(ComType)
1067    E->setTypeOperandSourceInfo(
1068        GetTypeSourceInfo(Record, Idx));
1069    return;
1070  }
1071
1072  // __uuidof(expr)
1073  E->setExprOperand(Reader.ReadSubExpr());
1074}
1075
1076void ASTStmtReader::VisitCXXThisExpr(CXXThisExpr *E) {
1077  VisitExpr(E);
1078  E->setLocation(ReadSourceLocation(Record, Idx));
1079  E->setImplicit(Record[Idx++]);
1080}
1081
1082void ASTStmtReader::VisitCXXThrowExpr(CXXThrowExpr *E) {
1083  VisitExpr(E);
1084  E->setThrowLoc(ReadSourceLocation(Record, Idx));
1085  E->setSubExpr(Reader.ReadSubExpr());
1086}
1087
1088void ASTStmtReader::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1089  VisitExpr(E);
1090
1091  assert(Record[Idx] == E->Param.getInt() && "We messed up at creation ?");
1092  ++Idx; // HasOtherExprStored and SubExpr was handled during creation.
1093  E->Param.setPointer(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
1094  E->Loc = ReadSourceLocation(Record, Idx);
1095}
1096
1097void ASTStmtReader::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1098  VisitExpr(E);
1099  E->setTemporary(Reader.ReadCXXTemporary(Record, Idx));
1100  E->setSubExpr(Reader.ReadSubExpr());
1101}
1102
1103void ASTStmtReader::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1104  VisitExpr(E);
1105  E->TypeInfo = GetTypeSourceInfo(Record, Idx);
1106  E->RParenLoc = ReadSourceLocation(Record, Idx);
1107}
1108
1109void ASTStmtReader::VisitCXXNewExpr(CXXNewExpr *E) {
1110  VisitExpr(E);
1111  E->setGlobalNew(Record[Idx++]);
1112  E->setHasInitializer(Record[Idx++]);
1113  bool isArray = Record[Idx++];
1114  unsigned NumPlacementArgs = Record[Idx++];
1115  unsigned NumCtorArgs = Record[Idx++];
1116  E->setOperatorNew(cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++])));
1117  E->setOperatorDelete(
1118                    cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++])));
1119  E->setConstructor(
1120               cast_or_null<CXXConstructorDecl>(Reader.GetDecl(Record[Idx++])));
1121  E->AllocatedTypeInfo = GetTypeSourceInfo(Record, Idx);
1122  SourceRange TypeIdParens;
1123  TypeIdParens.setBegin(ReadSourceLocation(Record, Idx));
1124  TypeIdParens.setEnd(ReadSourceLocation(Record, Idx));
1125  E->TypeIdParens = TypeIdParens;
1126  E->setStartLoc(ReadSourceLocation(Record, Idx));
1127  E->setEndLoc(ReadSourceLocation(Record, Idx));
1128
1129  E->AllocateArgsArray(*Reader.getContext(), isArray, NumPlacementArgs,
1130                       NumCtorArgs);
1131
1132  // Install all the subexpressions.
1133  for (CXXNewExpr::raw_arg_iterator I = E->raw_arg_begin(),e = E->raw_arg_end();
1134       I != e; ++I)
1135    *I = Reader.ReadSubStmt();
1136}
1137
1138void ASTStmtReader::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1139  VisitExpr(E);
1140  E->GlobalDelete = Record[Idx++];
1141  E->ArrayForm = Record[Idx++];
1142  E->ArrayFormAsWritten = Record[Idx++];
1143  E->OperatorDelete = cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++]));
1144  E->Argument = Reader.ReadSubExpr();
1145  E->Loc = ReadSourceLocation(Record, Idx);
1146}
1147
1148void ASTStmtReader::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1149  VisitExpr(E);
1150
1151  E->setBase(Reader.ReadSubExpr());
1152  E->setArrow(Record[Idx++]);
1153  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
1154  E->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx));
1155  E->setQualifierRange(ReadSourceRange(Record, Idx));
1156  E->setScopeTypeInfo(GetTypeSourceInfo(Record, Idx));
1157  E->setColonColonLoc(ReadSourceLocation(Record, Idx));
1158  E->setTildeLoc(ReadSourceLocation(Record, Idx));
1159
1160  IdentifierInfo *II = Reader.GetIdentifierInfo(Record, Idx);
1161  if (II)
1162    E->setDestroyedType(II, ReadSourceLocation(Record, Idx));
1163  else
1164    E->setDestroyedType(GetTypeSourceInfo(Record, Idx));
1165}
1166
1167void ASTStmtReader::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E) {
1168  VisitExpr(E);
1169  unsigned NumTemps = Record[Idx++];
1170  if (NumTemps) {
1171    E->setNumTemporaries(*Reader.getContext(), NumTemps);
1172    for (unsigned i = 0; i != NumTemps; ++i)
1173      E->setTemporary(i, Reader.ReadCXXTemporary(Record, Idx));
1174  }
1175  E->setSubExpr(Reader.ReadSubExpr());
1176}
1177
1178void
1179ASTStmtReader::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E){
1180  VisitExpr(E);
1181
1182  unsigned NumTemplateArgs = Record[Idx++];
1183  assert((NumTemplateArgs != 0) == E->hasExplicitTemplateArgs() &&
1184         "Read wrong record during creation ?");
1185  if (E->hasExplicitTemplateArgs())
1186    ReadExplicitTemplateArgumentList(E->getExplicitTemplateArgs(),
1187                                     NumTemplateArgs);
1188
1189  E->setBase(Reader.ReadSubExpr());
1190  E->setBaseType(Reader.GetType(Record[Idx++]));
1191  E->setArrow(Record[Idx++]);
1192  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
1193  E->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx));
1194  E->setQualifierRange(ReadSourceRange(Record, Idx));
1195  E->setFirstQualifierFoundInScope(
1196                        cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++])));
1197  ReadDeclarationNameInfo(E->MemberNameInfo, Record, Idx);
1198}
1199
1200void
1201ASTStmtReader::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1202  VisitExpr(E);
1203
1204  unsigned NumTemplateArgs = Record[Idx++];
1205  assert((NumTemplateArgs != 0) == E->hasExplicitTemplateArgs() &&
1206         "Read wrong record during creation ?");
1207  if (E->hasExplicitTemplateArgs())
1208    ReadExplicitTemplateArgumentList(E->getExplicitTemplateArgs(),
1209                                     NumTemplateArgs);
1210
1211  ReadDeclarationNameInfo(E->NameInfo, Record, Idx);
1212  E->setQualifierRange(ReadSourceRange(Record, Idx));
1213  E->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx));
1214}
1215
1216void
1217ASTStmtReader::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1218  VisitExpr(E);
1219  assert(Record[Idx] == E->arg_size() && "Read wrong record during creation ?");
1220  ++Idx; // NumArgs;
1221  for (unsigned I = 0, N = E->arg_size(); I != N; ++I)
1222    E->setArg(I, Reader.ReadSubExpr());
1223  E->Type = GetTypeSourceInfo(Record, Idx);
1224  E->setLParenLoc(ReadSourceLocation(Record, Idx));
1225  E->setRParenLoc(ReadSourceLocation(Record, Idx));
1226}
1227
1228void ASTStmtReader::VisitOverloadExpr(OverloadExpr *E) {
1229  VisitExpr(E);
1230
1231  unsigned NumTemplateArgs = Record[Idx++];
1232  assert((NumTemplateArgs != 0) == E->hasExplicitTemplateArgs() &&
1233         "Read wrong record during creation ?");
1234  if (E->hasExplicitTemplateArgs())
1235    ReadExplicitTemplateArgumentList(E->getExplicitTemplateArgs(),
1236                                     NumTemplateArgs);
1237
1238  unsigned NumDecls = Record[Idx++];
1239  UnresolvedSet<8> Decls;
1240  for (unsigned i = 0; i != NumDecls; ++i) {
1241    NamedDecl *D = cast<NamedDecl>(Reader.GetDecl(Record[Idx++]));
1242    AccessSpecifier AS = (AccessSpecifier)Record[Idx++];
1243    Decls.addDecl(D, AS);
1244  }
1245  E->initializeResults(*Reader.getContext(), Decls.begin(), Decls.end());
1246
1247  ReadDeclarationNameInfo(E->NameInfo, Record, Idx);
1248  E->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx));
1249  E->setQualifierRange(ReadSourceRange(Record, Idx));
1250}
1251
1252void ASTStmtReader::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1253  VisitOverloadExpr(E);
1254  E->setArrow(Record[Idx++]);
1255  E->setHasUnresolvedUsing(Record[Idx++]);
1256  E->setBase(Reader.ReadSubExpr());
1257  E->setBaseType(Reader.GetType(Record[Idx++]));
1258  E->setOperatorLoc(ReadSourceLocation(Record, Idx));
1259}
1260
1261void ASTStmtReader::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1262  VisitOverloadExpr(E);
1263  E->setRequiresADL(Record[Idx++]);
1264  E->setOverloaded(Record[Idx++]);
1265  E->setNamingClass(cast_or_null<CXXRecordDecl>(Reader.GetDecl(Record[Idx++])));
1266}
1267
1268void ASTStmtReader::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) {
1269  VisitExpr(E);
1270  E->UTT = (UnaryTypeTrait)Record[Idx++];
1271  E->Value = (bool)Record[Idx++];
1272  SourceRange Range = ReadSourceRange(Record, Idx);
1273  E->Loc = Range.getBegin();
1274  E->RParen = Range.getEnd();
1275  E->QueriedType = GetTypeSourceInfo(Record, Idx);
1276}
1277
1278void ASTStmtReader::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1279  VisitExpr(E);
1280  E->Value = (bool)Record[Idx++];
1281  E->Range = ReadSourceRange(Record, Idx);
1282  E->Operand = Reader.ReadSubExpr();
1283}
1284
1285Stmt *ASTReader::ReadStmt(PerFileData &F) {
1286  switch (ReadingKind) {
1287  case Read_Decl:
1288  case Read_Type:
1289    return ReadStmtFromStream(F);
1290  case Read_Stmt:
1291    return ReadSubStmt();
1292  }
1293
1294  llvm_unreachable("ReadingKind not set ?");
1295  return 0;
1296}
1297
1298Expr *ASTReader::ReadExpr(PerFileData &F) {
1299  return cast_or_null<Expr>(ReadStmt(F));
1300}
1301
1302Expr *ASTReader::ReadSubExpr() {
1303  return cast_or_null<Expr>(ReadSubStmt());
1304}
1305
1306// Within the bitstream, expressions are stored in Reverse Polish
1307// Notation, with each of the subexpressions preceding the
1308// expression they are stored in. Subexpressions are stored from last to first.
1309// To evaluate expressions, we continue reading expressions and placing them on
1310// the stack, with expressions having operands removing those operands from the
1311// stack. Evaluation terminates when we see a STMT_STOP record, and
1312// the single remaining expression on the stack is our result.
1313Stmt *ASTReader::ReadStmtFromStream(PerFileData &F) {
1314
1315  ReadingKindTracker ReadingKind(Read_Stmt, *this);
1316  llvm::BitstreamCursor &Cursor = F.DeclsCursor;
1317
1318#ifndef NDEBUG
1319  unsigned PrevNumStmts = StmtStack.size();
1320#endif
1321
1322  RecordData Record;
1323  unsigned Idx;
1324  ASTStmtReader Reader(*this, F, Cursor, Record, Idx);
1325  Stmt::EmptyShell Empty;
1326
1327  while (true) {
1328    unsigned Code = Cursor.ReadCode();
1329    if (Code == llvm::bitc::END_BLOCK) {
1330      if (Cursor.ReadBlockEnd()) {
1331        Error("error at end of block in AST file");
1332        return 0;
1333      }
1334      break;
1335    }
1336
1337    if (Code == llvm::bitc::ENTER_SUBBLOCK) {
1338      // No known subblocks, always skip them.
1339      Cursor.ReadSubBlockID();
1340      if (Cursor.SkipBlock()) {
1341        Error("malformed block record in AST file");
1342        return 0;
1343      }
1344      continue;
1345    }
1346
1347    if (Code == llvm::bitc::DEFINE_ABBREV) {
1348      Cursor.ReadAbbrevRecord();
1349      continue;
1350    }
1351
1352    Stmt *S = 0;
1353    Idx = 0;
1354    Record.clear();
1355    bool Finished = false;
1356    switch ((StmtCode)Cursor.ReadRecord(Code, Record)) {
1357    case STMT_STOP:
1358      Finished = true;
1359      break;
1360
1361    case STMT_NULL_PTR:
1362      S = 0;
1363      break;
1364
1365    case STMT_NULL:
1366      S = new (Context) NullStmt(Empty);
1367      break;
1368
1369    case STMT_COMPOUND:
1370      S = new (Context) CompoundStmt(Empty);
1371      break;
1372
1373    case STMT_CASE:
1374      S = new (Context) CaseStmt(Empty);
1375      break;
1376
1377    case STMT_DEFAULT:
1378      S = new (Context) DefaultStmt(Empty);
1379      break;
1380
1381    case STMT_LABEL:
1382      S = new (Context) LabelStmt(Empty);
1383      break;
1384
1385    case STMT_IF:
1386      S = new (Context) IfStmt(Empty);
1387      break;
1388
1389    case STMT_SWITCH:
1390      S = new (Context) SwitchStmt(Empty);
1391      break;
1392
1393    case STMT_WHILE:
1394      S = new (Context) WhileStmt(Empty);
1395      break;
1396
1397    case STMT_DO:
1398      S = new (Context) DoStmt(Empty);
1399      break;
1400
1401    case STMT_FOR:
1402      S = new (Context) ForStmt(Empty);
1403      break;
1404
1405    case STMT_GOTO:
1406      S = new (Context) GotoStmt(Empty);
1407      break;
1408
1409    case STMT_INDIRECT_GOTO:
1410      S = new (Context) IndirectGotoStmt(Empty);
1411      break;
1412
1413    case STMT_CONTINUE:
1414      S = new (Context) ContinueStmt(Empty);
1415      break;
1416
1417    case STMT_BREAK:
1418      S = new (Context) BreakStmt(Empty);
1419      break;
1420
1421    case STMT_RETURN:
1422      S = new (Context) ReturnStmt(Empty);
1423      break;
1424
1425    case STMT_DECL:
1426      S = new (Context) DeclStmt(Empty);
1427      break;
1428
1429    case STMT_ASM:
1430      S = new (Context) AsmStmt(Empty);
1431      break;
1432
1433    case EXPR_PREDEFINED:
1434      S = new (Context) PredefinedExpr(Empty);
1435      break;
1436
1437    case EXPR_DECL_REF:
1438      S = DeclRefExpr::CreateEmpty(*Context,
1439                         /*HasQualifier=*/Record[ASTStmtReader::NumExprFields],
1440                  /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 1]);
1441      break;
1442
1443    case EXPR_INTEGER_LITERAL:
1444      S = IntegerLiteral::Create(*Context, Empty);
1445      break;
1446
1447    case EXPR_FLOATING_LITERAL:
1448      S = FloatingLiteral::Create(*Context, Empty);
1449      break;
1450
1451    case EXPR_IMAGINARY_LITERAL:
1452      S = new (Context) ImaginaryLiteral(Empty);
1453      break;
1454
1455    case EXPR_STRING_LITERAL:
1456      S = StringLiteral::CreateEmpty(*Context,
1457                                     Record[ASTStmtReader::NumExprFields + 1]);
1458      break;
1459
1460    case EXPR_CHARACTER_LITERAL:
1461      S = new (Context) CharacterLiteral(Empty);
1462      break;
1463
1464    case EXPR_PAREN:
1465      S = new (Context) ParenExpr(Empty);
1466      break;
1467
1468    case EXPR_PAREN_LIST:
1469      S = new (Context) ParenListExpr(Empty);
1470      break;
1471
1472    case EXPR_UNARY_OPERATOR:
1473      S = new (Context) UnaryOperator(Empty);
1474      break;
1475
1476    case EXPR_OFFSETOF:
1477      S = OffsetOfExpr::CreateEmpty(*Context,
1478                                    Record[ASTStmtReader::NumExprFields],
1479                                    Record[ASTStmtReader::NumExprFields + 1]);
1480      break;
1481
1482    case EXPR_SIZEOF_ALIGN_OF:
1483      S = new (Context) SizeOfAlignOfExpr(Empty);
1484      break;
1485
1486    case EXPR_ARRAY_SUBSCRIPT:
1487      S = new (Context) ArraySubscriptExpr(Empty);
1488      break;
1489
1490    case EXPR_CALL:
1491      S = new (Context) CallExpr(*Context, Stmt::CallExprClass, Empty);
1492      break;
1493
1494    case EXPR_MEMBER: {
1495      // We load everything here and fully initialize it at creation.
1496      // That way we can use MemberExpr::Create and don't have to duplicate its
1497      // logic with a MemberExpr::CreateEmpty.
1498
1499      assert(Idx == 0);
1500      NestedNameSpecifier *NNS = 0;
1501      SourceRange QualifierRange;
1502      if (Record[Idx++]) { // HasQualifier.
1503        NNS = ReadNestedNameSpecifier(Record, Idx);
1504        QualifierRange = ReadSourceRange(F, Record, Idx);
1505      }
1506
1507      TemplateArgumentListInfo ArgInfo;
1508      unsigned NumTemplateArgs = Record[Idx++];
1509      if (NumTemplateArgs) {
1510        ArgInfo.setLAngleLoc(ReadSourceLocation(F, Record, Idx));
1511        ArgInfo.setRAngleLoc(ReadSourceLocation(F, Record, Idx));
1512        for (unsigned i = 0; i != NumTemplateArgs; ++i)
1513          ArgInfo.addArgument(ReadTemplateArgumentLoc(F, Record, Idx));
1514      }
1515
1516      NamedDecl *FoundD = cast_or_null<NamedDecl>(GetDecl(Record[Idx++]));
1517      AccessSpecifier AS = (AccessSpecifier)Record[Idx++];
1518      DeclAccessPair FoundDecl = DeclAccessPair::make(FoundD, AS);
1519
1520      QualType T = GetType(Record[Idx++]);
1521      Expr *Base = ReadSubExpr();
1522      ValueDecl *MemberD = cast<ValueDecl>(GetDecl(Record[Idx++]));
1523      SourceLocation MemberLoc = ReadSourceLocation(F, Record, Idx);
1524      DeclarationNameInfo MemberNameInfo(MemberD->getDeclName(), MemberLoc);
1525      bool IsArrow = Record[Idx++];
1526
1527      S = MemberExpr::Create(*Context, Base, IsArrow, NNS, QualifierRange,
1528                             MemberD, FoundDecl, MemberNameInfo,
1529                             NumTemplateArgs ? &ArgInfo : 0, T);
1530      ReadDeclarationNameLoc(F, cast<MemberExpr>(S)->MemberDNLoc,
1531                             MemberD->getDeclName(), Record, Idx);
1532      break;
1533    }
1534
1535    case EXPR_BINARY_OPERATOR:
1536      S = new (Context) BinaryOperator(Empty);
1537      break;
1538
1539    case EXPR_COMPOUND_ASSIGN_OPERATOR:
1540      S = new (Context) CompoundAssignOperator(Empty);
1541      break;
1542
1543    case EXPR_CONDITIONAL_OPERATOR:
1544      S = new (Context) ConditionalOperator(Empty);
1545      break;
1546
1547    case EXPR_IMPLICIT_CAST:
1548      S = ImplicitCastExpr::CreateEmpty(*Context,
1549                       /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
1550      break;
1551
1552    case EXPR_CSTYLE_CAST:
1553      S = CStyleCastExpr::CreateEmpty(*Context,
1554                       /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
1555      break;
1556
1557    case EXPR_COMPOUND_LITERAL:
1558      S = new (Context) CompoundLiteralExpr(Empty);
1559      break;
1560
1561    case EXPR_EXT_VECTOR_ELEMENT:
1562      S = new (Context) ExtVectorElementExpr(Empty);
1563      break;
1564
1565    case EXPR_INIT_LIST:
1566      S = new (Context) InitListExpr(*getContext(), Empty);
1567      break;
1568
1569    case EXPR_DESIGNATED_INIT:
1570      S = DesignatedInitExpr::CreateEmpty(*Context,
1571                                     Record[ASTStmtReader::NumExprFields] - 1);
1572
1573      break;
1574
1575    case EXPR_IMPLICIT_VALUE_INIT:
1576      S = new (Context) ImplicitValueInitExpr(Empty);
1577      break;
1578
1579    case EXPR_VA_ARG:
1580      S = new (Context) VAArgExpr(Empty);
1581      break;
1582
1583    case EXPR_ADDR_LABEL:
1584      S = new (Context) AddrLabelExpr(Empty);
1585      break;
1586
1587    case EXPR_STMT:
1588      S = new (Context) StmtExpr(Empty);
1589      break;
1590
1591    case EXPR_TYPES_COMPATIBLE:
1592      S = new (Context) TypesCompatibleExpr(Empty);
1593      break;
1594
1595    case EXPR_CHOOSE:
1596      S = new (Context) ChooseExpr(Empty);
1597      break;
1598
1599    case EXPR_GNU_NULL:
1600      S = new (Context) GNUNullExpr(Empty);
1601      break;
1602
1603    case EXPR_SHUFFLE_VECTOR:
1604      S = new (Context) ShuffleVectorExpr(Empty);
1605      break;
1606
1607    case EXPR_BLOCK:
1608      S = new (Context) BlockExpr(Empty);
1609      break;
1610
1611    case EXPR_BLOCK_DECL_REF:
1612      S = new (Context) BlockDeclRefExpr(Empty);
1613      break;
1614
1615    case EXPR_OBJC_STRING_LITERAL:
1616      S = new (Context) ObjCStringLiteral(Empty);
1617      break;
1618    case EXPR_OBJC_ENCODE:
1619      S = new (Context) ObjCEncodeExpr(Empty);
1620      break;
1621    case EXPR_OBJC_SELECTOR_EXPR:
1622      S = new (Context) ObjCSelectorExpr(Empty);
1623      break;
1624    case EXPR_OBJC_PROTOCOL_EXPR:
1625      S = new (Context) ObjCProtocolExpr(Empty);
1626      break;
1627    case EXPR_OBJC_IVAR_REF_EXPR:
1628      S = new (Context) ObjCIvarRefExpr(Empty);
1629      break;
1630    case EXPR_OBJC_PROPERTY_REF_EXPR:
1631      S = new (Context) ObjCPropertyRefExpr(Empty);
1632      break;
1633    case EXPR_OBJC_KVC_REF_EXPR:
1634      S = new (Context) ObjCImplicitSetterGetterRefExpr(Empty);
1635      break;
1636    case EXPR_OBJC_MESSAGE_EXPR:
1637      S = ObjCMessageExpr::CreateEmpty(*Context,
1638                                     Record[ASTStmtReader::NumExprFields]);
1639      break;
1640    case EXPR_OBJC_ISA:
1641      S = new (Context) ObjCIsaExpr(Empty);
1642      break;
1643    case STMT_OBJC_FOR_COLLECTION:
1644      S = new (Context) ObjCForCollectionStmt(Empty);
1645      break;
1646    case STMT_OBJC_CATCH:
1647      S = new (Context) ObjCAtCatchStmt(Empty);
1648      break;
1649    case STMT_OBJC_FINALLY:
1650      S = new (Context) ObjCAtFinallyStmt(Empty);
1651      break;
1652    case STMT_OBJC_AT_TRY:
1653      S = ObjCAtTryStmt::CreateEmpty(*Context,
1654                                     Record[ASTStmtReader::NumStmtFields],
1655                                     Record[ASTStmtReader::NumStmtFields + 1]);
1656      break;
1657    case STMT_OBJC_AT_SYNCHRONIZED:
1658      S = new (Context) ObjCAtSynchronizedStmt(Empty);
1659      break;
1660    case STMT_OBJC_AT_THROW:
1661      S = new (Context) ObjCAtThrowStmt(Empty);
1662      break;
1663
1664    case STMT_CXX_CATCH:
1665      S = new (Context) CXXCatchStmt(Empty);
1666      break;
1667
1668    case STMT_CXX_TRY:
1669      S = CXXTryStmt::Create(*Context, Empty,
1670             /*NumHandlers=*/Record[ASTStmtReader::NumStmtFields]);
1671      break;
1672
1673    case EXPR_CXX_OPERATOR_CALL:
1674      S = new (Context) CXXOperatorCallExpr(*Context, Empty);
1675      break;
1676
1677    case EXPR_CXX_MEMBER_CALL:
1678      S = new (Context) CXXMemberCallExpr(*Context, Empty);
1679      break;
1680
1681    case EXPR_CXX_CONSTRUCT:
1682      S = new (Context) CXXConstructExpr(Empty);
1683      break;
1684
1685    case EXPR_CXX_TEMPORARY_OBJECT:
1686      S = new (Context) CXXTemporaryObjectExpr(Empty);
1687      break;
1688
1689    case EXPR_CXX_STATIC_CAST:
1690      S = CXXStaticCastExpr::CreateEmpty(*Context,
1691                       /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
1692      break;
1693
1694    case EXPR_CXX_DYNAMIC_CAST:
1695      S = CXXDynamicCastExpr::CreateEmpty(*Context,
1696                       /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
1697      break;
1698
1699    case EXPR_CXX_REINTERPRET_CAST:
1700      S = CXXReinterpretCastExpr::CreateEmpty(*Context,
1701                       /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
1702      break;
1703
1704    case EXPR_CXX_CONST_CAST:
1705      S = CXXConstCastExpr::CreateEmpty(*Context);
1706      break;
1707
1708    case EXPR_CXX_FUNCTIONAL_CAST:
1709      S = CXXFunctionalCastExpr::CreateEmpty(*Context,
1710                       /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
1711      break;
1712
1713    case EXPR_CXX_BOOL_LITERAL:
1714      S = new (Context) CXXBoolLiteralExpr(Empty);
1715      break;
1716
1717    case EXPR_CXX_NULL_PTR_LITERAL:
1718      S = new (Context) CXXNullPtrLiteralExpr(Empty);
1719      break;
1720    case EXPR_CXX_TYPEID_EXPR:
1721      S = new (Context) CXXTypeidExpr(Empty, true);
1722      break;
1723    case EXPR_CXX_TYPEID_TYPE:
1724      S = new (Context) CXXTypeidExpr(Empty, false);
1725      break;
1726    case EXPR_CXX_UUIDOF_EXPR:
1727      S = new (Context) CXXUuidofExpr(Empty, true);
1728      break;
1729    case EXPR_CXX_UUIDOF_TYPE:
1730      S = new (Context) CXXUuidofExpr(Empty, false);
1731      break;
1732    case EXPR_CXX_THIS:
1733      S = new (Context) CXXThisExpr(Empty);
1734      break;
1735    case EXPR_CXX_THROW:
1736      S = new (Context) CXXThrowExpr(Empty);
1737      break;
1738    case EXPR_CXX_DEFAULT_ARG: {
1739      bool HasOtherExprStored = Record[ASTStmtReader::NumExprFields];
1740      if (HasOtherExprStored) {
1741        Expr *SubExpr = ReadSubExpr();
1742        S = CXXDefaultArgExpr::Create(*Context, SourceLocation(), 0, SubExpr);
1743      } else
1744        S = new (Context) CXXDefaultArgExpr(Empty);
1745      break;
1746    }
1747    case EXPR_CXX_BIND_TEMPORARY:
1748      S = new (Context) CXXBindTemporaryExpr(Empty);
1749      break;
1750
1751    case EXPR_CXX_SCALAR_VALUE_INIT:
1752      S = new (Context) CXXScalarValueInitExpr(Empty);
1753      break;
1754    case EXPR_CXX_NEW:
1755      S = new (Context) CXXNewExpr(Empty);
1756      break;
1757    case EXPR_CXX_DELETE:
1758      S = new (Context) CXXDeleteExpr(Empty);
1759      break;
1760    case EXPR_CXX_PSEUDO_DESTRUCTOR:
1761      S = new (Context) CXXPseudoDestructorExpr(Empty);
1762      break;
1763
1764    case EXPR_CXX_EXPR_WITH_TEMPORARIES:
1765      S = new (Context) CXXExprWithTemporaries(Empty);
1766      break;
1767
1768    case EXPR_CXX_DEPENDENT_SCOPE_MEMBER:
1769      S = CXXDependentScopeMemberExpr::CreateEmpty(*Context,
1770                      /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]);
1771      break;
1772
1773    case EXPR_CXX_DEPENDENT_SCOPE_DECL_REF:
1774      S = DependentScopeDeclRefExpr::CreateEmpty(*Context,
1775                      /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]);
1776      break;
1777
1778    case EXPR_CXX_UNRESOLVED_CONSTRUCT:
1779      S = CXXUnresolvedConstructExpr::CreateEmpty(*Context,
1780                              /*NumArgs=*/Record[ASTStmtReader::NumExprFields]);
1781      break;
1782
1783    case EXPR_CXX_UNRESOLVED_MEMBER:
1784      S = UnresolvedMemberExpr::CreateEmpty(*Context,
1785                      /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]);
1786      break;
1787
1788    case EXPR_CXX_UNRESOLVED_LOOKUP:
1789      S = UnresolvedLookupExpr::CreateEmpty(*Context,
1790                      /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]);
1791      break;
1792
1793    case EXPR_CXX_UNARY_TYPE_TRAIT:
1794      S = new (Context) UnaryTypeTraitExpr(Empty);
1795      break;
1796
1797    case EXPR_CXX_NOEXCEPT:
1798      S = new (Context) CXXNoexceptExpr(Empty);
1799      break;
1800    }
1801
1802    // We hit a STMT_STOP, so we're done with this expression.
1803    if (Finished)
1804      break;
1805
1806    ++NumStatementsRead;
1807
1808    if (S)
1809      Reader.Visit(S);
1810
1811    assert(Idx == Record.size() && "Invalid deserialization of statement");
1812    StmtStack.push_back(S);
1813  }
1814
1815#ifndef NDEBUG
1816  assert(StmtStack.size() > PrevNumStmts && "Read too many sub stmts!");
1817  assert(StmtStack.size() == PrevNumStmts + 1 && "Extra expressions on stack!");
1818#endif
1819
1820  return StmtStack.pop_back_val();
1821}
1822