1 //===--- TypePrinter.cpp - Pretty-Print Clang Types -----------------------===//
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 contains code to print types from Clang's type system.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/AST/PrettyPrinter.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/Decl.h"
17 #include "clang/AST/DeclObjC.h"
18 #include "clang/AST/DeclTemplate.h"
19 #include "clang/AST/Expr.h"
20 #include "clang/AST/Type.h"
21 #include "clang/Basic/LangOptions.h"
22 #include "clang/Basic/SourceManager.h"
23 #include "llvm/ADT/SmallString.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/Support/SaveAndRestore.h"
26 #include "llvm/Support/raw_ostream.h"
27 using namespace clang;
28 
29 namespace {
30   /// \brief RAII object that enables printing of the ARC __strong lifetime
31   /// qualifier.
32   class IncludeStrongLifetimeRAII {
33     PrintingPolicy &Policy;
34     bool Old;
35 
36   public:
IncludeStrongLifetimeRAII(PrintingPolicy & Policy)37     explicit IncludeStrongLifetimeRAII(PrintingPolicy &Policy)
38       : Policy(Policy), Old(Policy.SuppressStrongLifetime) {
39         if (!Policy.SuppressLifetimeQualifiers)
40           Policy.SuppressStrongLifetime = false;
41     }
42 
~IncludeStrongLifetimeRAII()43     ~IncludeStrongLifetimeRAII() {
44       Policy.SuppressStrongLifetime = Old;
45     }
46   };
47 
48   class ParamPolicyRAII {
49     PrintingPolicy &Policy;
50     bool Old;
51 
52   public:
ParamPolicyRAII(PrintingPolicy & Policy)53     explicit ParamPolicyRAII(PrintingPolicy &Policy)
54       : Policy(Policy), Old(Policy.SuppressSpecifiers) {
55       Policy.SuppressSpecifiers = false;
56     }
57 
~ParamPolicyRAII()58     ~ParamPolicyRAII() {
59       Policy.SuppressSpecifiers = Old;
60     }
61   };
62 
63   class ElaboratedTypePolicyRAII {
64     PrintingPolicy &Policy;
65     bool SuppressTagKeyword;
66     bool SuppressScope;
67 
68   public:
ElaboratedTypePolicyRAII(PrintingPolicy & Policy)69     explicit ElaboratedTypePolicyRAII(PrintingPolicy &Policy) : Policy(Policy) {
70       SuppressTagKeyword = Policy.SuppressTagKeyword;
71       SuppressScope = Policy.SuppressScope;
72       Policy.SuppressTagKeyword = true;
73       Policy.SuppressScope = true;
74     }
75 
~ElaboratedTypePolicyRAII()76     ~ElaboratedTypePolicyRAII() {
77       Policy.SuppressTagKeyword = SuppressTagKeyword;
78       Policy.SuppressScope = SuppressScope;
79     }
80   };
81 
82   class TypePrinter {
83     PrintingPolicy Policy;
84     unsigned Indentation;
85     bool HasEmptyPlaceHolder;
86     bool InsideCCAttribute;
87 
88   public:
TypePrinter(const PrintingPolicy & Policy,unsigned Indentation=0)89     explicit TypePrinter(const PrintingPolicy &Policy, unsigned Indentation = 0)
90       : Policy(Policy), Indentation(Indentation),
91         HasEmptyPlaceHolder(false), InsideCCAttribute(false) { }
92 
93     void print(const Type *ty, Qualifiers qs, raw_ostream &OS,
94                StringRef PlaceHolder);
95     void print(QualType T, raw_ostream &OS, StringRef PlaceHolder);
96 
97     static bool canPrefixQualifiers(const Type *T, bool &NeedARCStrongQualifier);
98     void spaceBeforePlaceHolder(raw_ostream &OS);
99     void printTypeSpec(const NamedDecl *D, raw_ostream &OS);
100 
101     void printBefore(const Type *ty, Qualifiers qs, raw_ostream &OS);
102     void printBefore(QualType T, raw_ostream &OS);
103     void printAfter(const Type *ty, Qualifiers qs, raw_ostream &OS);
104     void printAfter(QualType T, raw_ostream &OS);
105     void AppendScope(DeclContext *DC, raw_ostream &OS);
106     void printTag(TagDecl *T, raw_ostream &OS);
107 #define ABSTRACT_TYPE(CLASS, PARENT)
108 #define TYPE(CLASS, PARENT) \
109     void print##CLASS##Before(const CLASS##Type *T, raw_ostream &OS); \
110     void print##CLASS##After(const CLASS##Type *T, raw_ostream &OS);
111 #include "clang/AST/TypeNodes.def"
112   };
113 }
114 
AppendTypeQualList(raw_ostream & OS,unsigned TypeQuals,bool HasRestrictKeyword)115 static void AppendTypeQualList(raw_ostream &OS, unsigned TypeQuals,
116                                bool HasRestrictKeyword) {
117   bool appendSpace = false;
118   if (TypeQuals & Qualifiers::Const) {
119     OS << "const";
120     appendSpace = true;
121   }
122   if (TypeQuals & Qualifiers::Volatile) {
123     if (appendSpace) OS << ' ';
124     OS << "volatile";
125     appendSpace = true;
126   }
127   if (TypeQuals & Qualifiers::Restrict) {
128     if (appendSpace) OS << ' ';
129     if (HasRestrictKeyword) {
130       OS << "restrict";
131     } else {
132       OS << "__restrict";
133     }
134   }
135 }
136 
spaceBeforePlaceHolder(raw_ostream & OS)137 void TypePrinter::spaceBeforePlaceHolder(raw_ostream &OS) {
138   if (!HasEmptyPlaceHolder)
139     OS << ' ';
140 }
141 
print(QualType t,raw_ostream & OS,StringRef PlaceHolder)142 void TypePrinter::print(QualType t, raw_ostream &OS, StringRef PlaceHolder) {
143   SplitQualType split = t.split();
144   print(split.Ty, split.Quals, OS, PlaceHolder);
145 }
146 
print(const Type * T,Qualifiers Quals,raw_ostream & OS,StringRef PlaceHolder)147 void TypePrinter::print(const Type *T, Qualifiers Quals, raw_ostream &OS,
148                         StringRef PlaceHolder) {
149   if (!T) {
150     OS << "NULL TYPE";
151     return;
152   }
153 
154   SaveAndRestore<bool> PHVal(HasEmptyPlaceHolder, PlaceHolder.empty());
155 
156   printBefore(T, Quals, OS);
157   OS << PlaceHolder;
158   printAfter(T, Quals, OS);
159 }
160 
canPrefixQualifiers(const Type * T,bool & NeedARCStrongQualifier)161 bool TypePrinter::canPrefixQualifiers(const Type *T,
162                                       bool &NeedARCStrongQualifier) {
163   // CanPrefixQualifiers - We prefer to print type qualifiers before the type,
164   // so that we get "const int" instead of "int const", but we can't do this if
165   // the type is complex.  For example if the type is "int*", we *must* print
166   // "int * const", printing "const int *" is different.  Only do this when the
167   // type expands to a simple string.
168   bool CanPrefixQualifiers = false;
169   NeedARCStrongQualifier = false;
170   Type::TypeClass TC = T->getTypeClass();
171   if (const AutoType *AT = dyn_cast<AutoType>(T))
172     TC = AT->desugar()->getTypeClass();
173   if (const SubstTemplateTypeParmType *Subst
174                                       = dyn_cast<SubstTemplateTypeParmType>(T))
175     TC = Subst->getReplacementType()->getTypeClass();
176 
177   switch (TC) {
178     case Type::Auto:
179     case Type::Builtin:
180     case Type::Complex:
181     case Type::UnresolvedUsing:
182     case Type::Typedef:
183     case Type::TypeOfExpr:
184     case Type::TypeOf:
185     case Type::Decltype:
186     case Type::UnaryTransform:
187     case Type::Record:
188     case Type::Enum:
189     case Type::Elaborated:
190     case Type::TemplateTypeParm:
191     case Type::SubstTemplateTypeParmPack:
192     case Type::TemplateSpecialization:
193     case Type::InjectedClassName:
194     case Type::DependentName:
195     case Type::DependentTemplateSpecialization:
196     case Type::ObjCObject:
197     case Type::ObjCInterface:
198     case Type::Atomic:
199     case Type::Pipe:
200       CanPrefixQualifiers = true;
201       break;
202 
203     case Type::ObjCObjectPointer:
204       CanPrefixQualifiers = T->isObjCIdType() || T->isObjCClassType() ||
205         T->isObjCQualifiedIdType() || T->isObjCQualifiedClassType();
206       break;
207 
208     case Type::ConstantArray:
209     case Type::IncompleteArray:
210     case Type::VariableArray:
211     case Type::DependentSizedArray:
212       NeedARCStrongQualifier = true;
213       // Fall through
214 
215     case Type::Adjusted:
216     case Type::Decayed:
217     case Type::Pointer:
218     case Type::BlockPointer:
219     case Type::LValueReference:
220     case Type::RValueReference:
221     case Type::MemberPointer:
222     case Type::DependentSizedExtVector:
223     case Type::Vector:
224     case Type::ExtVector:
225     case Type::FunctionProto:
226     case Type::FunctionNoProto:
227     case Type::Paren:
228     case Type::Attributed:
229     case Type::PackExpansion:
230     case Type::SubstTemplateTypeParm:
231       CanPrefixQualifiers = false;
232       break;
233   }
234 
235   return CanPrefixQualifiers;
236 }
237 
printBefore(QualType T,raw_ostream & OS)238 void TypePrinter::printBefore(QualType T, raw_ostream &OS) {
239   SplitQualType Split = T.split();
240 
241   // If we have cv1 T, where T is substituted for cv2 U, only print cv1 - cv2
242   // at this level.
243   Qualifiers Quals = Split.Quals;
244   if (const SubstTemplateTypeParmType *Subst =
245         dyn_cast<SubstTemplateTypeParmType>(Split.Ty))
246     Quals -= QualType(Subst, 0).getQualifiers();
247 
248   printBefore(Split.Ty, Quals, OS);
249 }
250 
251 /// \brief Prints the part of the type string before an identifier, e.g. for
252 /// "int foo[10]" it prints "int ".
printBefore(const Type * T,Qualifiers Quals,raw_ostream & OS)253 void TypePrinter::printBefore(const Type *T,Qualifiers Quals, raw_ostream &OS) {
254   if (Policy.SuppressSpecifiers && T->isSpecifierType())
255     return;
256 
257   SaveAndRestore<bool> PrevPHIsEmpty(HasEmptyPlaceHolder);
258 
259   // Print qualifiers as appropriate.
260 
261   bool CanPrefixQualifiers = false;
262   bool NeedARCStrongQualifier = false;
263   CanPrefixQualifiers = canPrefixQualifiers(T, NeedARCStrongQualifier);
264 
265   if (CanPrefixQualifiers && !Quals.empty()) {
266     if (NeedARCStrongQualifier) {
267       IncludeStrongLifetimeRAII Strong(Policy);
268       Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/true);
269     } else {
270       Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/true);
271     }
272   }
273 
274   bool hasAfterQuals = false;
275   if (!CanPrefixQualifiers && !Quals.empty()) {
276     hasAfterQuals = !Quals.isEmptyWhenPrinted(Policy);
277     if (hasAfterQuals)
278       HasEmptyPlaceHolder = false;
279   }
280 
281   switch (T->getTypeClass()) {
282 #define ABSTRACT_TYPE(CLASS, PARENT)
283 #define TYPE(CLASS, PARENT) case Type::CLASS: \
284     print##CLASS##Before(cast<CLASS##Type>(T), OS); \
285     break;
286 #include "clang/AST/TypeNodes.def"
287   }
288 
289   if (hasAfterQuals) {
290     if (NeedARCStrongQualifier) {
291       IncludeStrongLifetimeRAII Strong(Policy);
292       Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/!PrevPHIsEmpty.get());
293     } else {
294       Quals.print(OS, Policy, /*appendSpaceIfNonEmpty=*/!PrevPHIsEmpty.get());
295     }
296   }
297 }
298 
printAfter(QualType t,raw_ostream & OS)299 void TypePrinter::printAfter(QualType t, raw_ostream &OS) {
300   SplitQualType split = t.split();
301   printAfter(split.Ty, split.Quals, OS);
302 }
303 
304 /// \brief Prints the part of the type string after an identifier, e.g. for
305 /// "int foo[10]" it prints "[10]".
printAfter(const Type * T,Qualifiers Quals,raw_ostream & OS)306 void TypePrinter::printAfter(const Type *T, Qualifiers Quals, raw_ostream &OS) {
307   switch (T->getTypeClass()) {
308 #define ABSTRACT_TYPE(CLASS, PARENT)
309 #define TYPE(CLASS, PARENT) case Type::CLASS: \
310     print##CLASS##After(cast<CLASS##Type>(T), OS); \
311     break;
312 #include "clang/AST/TypeNodes.def"
313   }
314 }
315 
printBuiltinBefore(const BuiltinType * T,raw_ostream & OS)316 void TypePrinter::printBuiltinBefore(const BuiltinType *T, raw_ostream &OS) {
317   OS << T->getName(Policy);
318   spaceBeforePlaceHolder(OS);
319 }
printBuiltinAfter(const BuiltinType * T,raw_ostream & OS)320 void TypePrinter::printBuiltinAfter(const BuiltinType *T, raw_ostream &OS) { }
321 
printComplexBefore(const ComplexType * T,raw_ostream & OS)322 void TypePrinter::printComplexBefore(const ComplexType *T, raw_ostream &OS) {
323   OS << "_Complex ";
324   printBefore(T->getElementType(), OS);
325 }
printComplexAfter(const ComplexType * T,raw_ostream & OS)326 void TypePrinter::printComplexAfter(const ComplexType *T, raw_ostream &OS) {
327   printAfter(T->getElementType(), OS);
328 }
329 
printPointerBefore(const PointerType * T,raw_ostream & OS)330 void TypePrinter::printPointerBefore(const PointerType *T, raw_ostream &OS) {
331   IncludeStrongLifetimeRAII Strong(Policy);
332   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
333   printBefore(T->getPointeeType(), OS);
334   // Handle things like 'int (*A)[4];' correctly.
335   // FIXME: this should include vectors, but vectors use attributes I guess.
336   if (isa<ArrayType>(T->getPointeeType()))
337     OS << '(';
338   OS << '*';
339 }
printPointerAfter(const PointerType * T,raw_ostream & OS)340 void TypePrinter::printPointerAfter(const PointerType *T, raw_ostream &OS) {
341   IncludeStrongLifetimeRAII Strong(Policy);
342   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
343   // Handle things like 'int (*A)[4];' correctly.
344   // FIXME: this should include vectors, but vectors use attributes I guess.
345   if (isa<ArrayType>(T->getPointeeType()))
346     OS << ')';
347   printAfter(T->getPointeeType(), OS);
348 }
349 
printBlockPointerBefore(const BlockPointerType * T,raw_ostream & OS)350 void TypePrinter::printBlockPointerBefore(const BlockPointerType *T,
351                                           raw_ostream &OS) {
352   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
353   printBefore(T->getPointeeType(), OS);
354   OS << '^';
355 }
printBlockPointerAfter(const BlockPointerType * T,raw_ostream & OS)356 void TypePrinter::printBlockPointerAfter(const BlockPointerType *T,
357                                           raw_ostream &OS) {
358   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
359   printAfter(T->getPointeeType(), OS);
360 }
361 
printLValueReferenceBefore(const LValueReferenceType * T,raw_ostream & OS)362 void TypePrinter::printLValueReferenceBefore(const LValueReferenceType *T,
363                                              raw_ostream &OS) {
364   IncludeStrongLifetimeRAII Strong(Policy);
365   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
366   printBefore(T->getPointeeTypeAsWritten(), OS);
367   // Handle things like 'int (&A)[4];' correctly.
368   // FIXME: this should include vectors, but vectors use attributes I guess.
369   if (isa<ArrayType>(T->getPointeeTypeAsWritten()))
370     OS << '(';
371   OS << '&';
372 }
printLValueReferenceAfter(const LValueReferenceType * T,raw_ostream & OS)373 void TypePrinter::printLValueReferenceAfter(const LValueReferenceType *T,
374                                             raw_ostream &OS) {
375   IncludeStrongLifetimeRAII Strong(Policy);
376   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
377   // Handle things like 'int (&A)[4];' correctly.
378   // FIXME: this should include vectors, but vectors use attributes I guess.
379   if (isa<ArrayType>(T->getPointeeTypeAsWritten()))
380     OS << ')';
381   printAfter(T->getPointeeTypeAsWritten(), OS);
382 }
383 
printRValueReferenceBefore(const RValueReferenceType * T,raw_ostream & OS)384 void TypePrinter::printRValueReferenceBefore(const RValueReferenceType *T,
385                                              raw_ostream &OS) {
386   IncludeStrongLifetimeRAII Strong(Policy);
387   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
388   printBefore(T->getPointeeTypeAsWritten(), OS);
389   // Handle things like 'int (&&A)[4];' correctly.
390   // FIXME: this should include vectors, but vectors use attributes I guess.
391   if (isa<ArrayType>(T->getPointeeTypeAsWritten()))
392     OS << '(';
393   OS << "&&";
394 }
printRValueReferenceAfter(const RValueReferenceType * T,raw_ostream & OS)395 void TypePrinter::printRValueReferenceAfter(const RValueReferenceType *T,
396                                             raw_ostream &OS) {
397   IncludeStrongLifetimeRAII Strong(Policy);
398   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
399   // Handle things like 'int (&&A)[4];' correctly.
400   // FIXME: this should include vectors, but vectors use attributes I guess.
401   if (isa<ArrayType>(T->getPointeeTypeAsWritten()))
402     OS << ')';
403   printAfter(T->getPointeeTypeAsWritten(), OS);
404 }
405 
printMemberPointerBefore(const MemberPointerType * T,raw_ostream & OS)406 void TypePrinter::printMemberPointerBefore(const MemberPointerType *T,
407                                            raw_ostream &OS) {
408   IncludeStrongLifetimeRAII Strong(Policy);
409   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
410   printBefore(T->getPointeeType(), OS);
411   // Handle things like 'int (Cls::*A)[4];' correctly.
412   // FIXME: this should include vectors, but vectors use attributes I guess.
413   if (isa<ArrayType>(T->getPointeeType()))
414     OS << '(';
415 
416   PrintingPolicy InnerPolicy(Policy);
417   InnerPolicy.IncludeTagDefinition = false;
418   TypePrinter(InnerPolicy).print(QualType(T->getClass(), 0), OS, StringRef());
419 
420   OS << "::*";
421 }
printMemberPointerAfter(const MemberPointerType * T,raw_ostream & OS)422 void TypePrinter::printMemberPointerAfter(const MemberPointerType *T,
423                                           raw_ostream &OS) {
424   IncludeStrongLifetimeRAII Strong(Policy);
425   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
426   // Handle things like 'int (Cls::*A)[4];' correctly.
427   // FIXME: this should include vectors, but vectors use attributes I guess.
428   if (isa<ArrayType>(T->getPointeeType()))
429     OS << ')';
430   printAfter(T->getPointeeType(), OS);
431 }
432 
printConstantArrayBefore(const ConstantArrayType * T,raw_ostream & OS)433 void TypePrinter::printConstantArrayBefore(const ConstantArrayType *T,
434                                            raw_ostream &OS) {
435   IncludeStrongLifetimeRAII Strong(Policy);
436   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
437   printBefore(T->getElementType(), OS);
438 }
printConstantArrayAfter(const ConstantArrayType * T,raw_ostream & OS)439 void TypePrinter::printConstantArrayAfter(const ConstantArrayType *T,
440                                           raw_ostream &OS) {
441   OS << '[';
442   if (T->getIndexTypeQualifiers().hasQualifiers()) {
443     AppendTypeQualList(OS, T->getIndexTypeCVRQualifiers(),
444                        Policy.Restrict);
445     OS << ' ';
446   }
447 
448   if (T->getSizeModifier() == ArrayType::Static)
449     OS << "static ";
450 
451   OS << T->getSize().getZExtValue() << ']';
452   printAfter(T->getElementType(), OS);
453 }
454 
printIncompleteArrayBefore(const IncompleteArrayType * T,raw_ostream & OS)455 void TypePrinter::printIncompleteArrayBefore(const IncompleteArrayType *T,
456                                              raw_ostream &OS) {
457   IncludeStrongLifetimeRAII Strong(Policy);
458   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
459   printBefore(T->getElementType(), OS);
460 }
printIncompleteArrayAfter(const IncompleteArrayType * T,raw_ostream & OS)461 void TypePrinter::printIncompleteArrayAfter(const IncompleteArrayType *T,
462                                             raw_ostream &OS) {
463   OS << "[]";
464   printAfter(T->getElementType(), OS);
465 }
466 
printVariableArrayBefore(const VariableArrayType * T,raw_ostream & OS)467 void TypePrinter::printVariableArrayBefore(const VariableArrayType *T,
468                                            raw_ostream &OS) {
469   IncludeStrongLifetimeRAII Strong(Policy);
470   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
471   printBefore(T->getElementType(), OS);
472 }
printVariableArrayAfter(const VariableArrayType * T,raw_ostream & OS)473 void TypePrinter::printVariableArrayAfter(const VariableArrayType *T,
474                                           raw_ostream &OS) {
475   OS << '[';
476   if (T->getIndexTypeQualifiers().hasQualifiers()) {
477     AppendTypeQualList(OS, T->getIndexTypeCVRQualifiers(), Policy.Restrict);
478     OS << ' ';
479   }
480 
481   if (T->getSizeModifier() == VariableArrayType::Static)
482     OS << "static ";
483   else if (T->getSizeModifier() == VariableArrayType::Star)
484     OS << '*';
485 
486   if (T->getSizeExpr())
487     T->getSizeExpr()->printPretty(OS, nullptr, Policy);
488   OS << ']';
489 
490   printAfter(T->getElementType(), OS);
491 }
492 
printAdjustedBefore(const AdjustedType * T,raw_ostream & OS)493 void TypePrinter::printAdjustedBefore(const AdjustedType *T, raw_ostream &OS) {
494   // Print the adjusted representation, otherwise the adjustment will be
495   // invisible.
496   printBefore(T->getAdjustedType(), OS);
497 }
printAdjustedAfter(const AdjustedType * T,raw_ostream & OS)498 void TypePrinter::printAdjustedAfter(const AdjustedType *T, raw_ostream &OS) {
499   printAfter(T->getAdjustedType(), OS);
500 }
501 
printDecayedBefore(const DecayedType * T,raw_ostream & OS)502 void TypePrinter::printDecayedBefore(const DecayedType *T, raw_ostream &OS) {
503   // Print as though it's a pointer.
504   printAdjustedBefore(T, OS);
505 }
printDecayedAfter(const DecayedType * T,raw_ostream & OS)506 void TypePrinter::printDecayedAfter(const DecayedType *T, raw_ostream &OS) {
507   printAdjustedAfter(T, OS);
508 }
509 
printDependentSizedArrayBefore(const DependentSizedArrayType * T,raw_ostream & OS)510 void TypePrinter::printDependentSizedArrayBefore(
511                                                const DependentSizedArrayType *T,
512                                                raw_ostream &OS) {
513   IncludeStrongLifetimeRAII Strong(Policy);
514   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
515   printBefore(T->getElementType(), OS);
516 }
printDependentSizedArrayAfter(const DependentSizedArrayType * T,raw_ostream & OS)517 void TypePrinter::printDependentSizedArrayAfter(
518                                                const DependentSizedArrayType *T,
519                                                raw_ostream &OS) {
520   OS << '[';
521   if (T->getSizeExpr())
522     T->getSizeExpr()->printPretty(OS, nullptr, Policy);
523   OS << ']';
524   printAfter(T->getElementType(), OS);
525 }
526 
printDependentSizedExtVectorBefore(const DependentSizedExtVectorType * T,raw_ostream & OS)527 void TypePrinter::printDependentSizedExtVectorBefore(
528                                           const DependentSizedExtVectorType *T,
529                                           raw_ostream &OS) {
530   printBefore(T->getElementType(), OS);
531 }
printDependentSizedExtVectorAfter(const DependentSizedExtVectorType * T,raw_ostream & OS)532 void TypePrinter::printDependentSizedExtVectorAfter(
533                                           const DependentSizedExtVectorType *T,
534                                           raw_ostream &OS) {
535   OS << " __attribute__((ext_vector_type(";
536   if (T->getSizeExpr())
537     T->getSizeExpr()->printPretty(OS, nullptr, Policy);
538   OS << ")))";
539   printAfter(T->getElementType(), OS);
540 }
541 
printVectorBefore(const VectorType * T,raw_ostream & OS)542 void TypePrinter::printVectorBefore(const VectorType *T, raw_ostream &OS) {
543   switch (T->getVectorKind()) {
544   case VectorType::AltiVecPixel:
545     OS << "__vector __pixel ";
546     break;
547   case VectorType::AltiVecBool:
548     OS << "__vector __bool ";
549     printBefore(T->getElementType(), OS);
550     break;
551   case VectorType::AltiVecVector:
552     OS << "__vector ";
553     printBefore(T->getElementType(), OS);
554     break;
555   case VectorType::NeonVector:
556     OS << "__attribute__((neon_vector_type("
557        << T->getNumElements() << "))) ";
558     printBefore(T->getElementType(), OS);
559     break;
560   case VectorType::NeonPolyVector:
561     OS << "__attribute__((neon_polyvector_type(" <<
562           T->getNumElements() << "))) ";
563     printBefore(T->getElementType(), OS);
564     break;
565   case VectorType::GenericVector: {
566     // FIXME: We prefer to print the size directly here, but have no way
567     // to get the size of the type.
568     OS << "__attribute__((__vector_size__("
569        << T->getNumElements()
570        << " * sizeof(";
571     print(T->getElementType(), OS, StringRef());
572     OS << ")))) ";
573     printBefore(T->getElementType(), OS);
574     break;
575   }
576   }
577 }
printVectorAfter(const VectorType * T,raw_ostream & OS)578 void TypePrinter::printVectorAfter(const VectorType *T, raw_ostream &OS) {
579   printAfter(T->getElementType(), OS);
580 }
581 
printExtVectorBefore(const ExtVectorType * T,raw_ostream & OS)582 void TypePrinter::printExtVectorBefore(const ExtVectorType *T,
583                                        raw_ostream &OS) {
584   printBefore(T->getElementType(), OS);
585 }
printExtVectorAfter(const ExtVectorType * T,raw_ostream & OS)586 void TypePrinter::printExtVectorAfter(const ExtVectorType *T, raw_ostream &OS) {
587   printAfter(T->getElementType(), OS);
588   OS << " __attribute__((ext_vector_type(";
589   OS << T->getNumElements();
590   OS << ")))";
591 }
592 
593 void
printExceptionSpecification(raw_ostream & OS,const PrintingPolicy & Policy) const594 FunctionProtoType::printExceptionSpecification(raw_ostream &OS,
595                                                const PrintingPolicy &Policy)
596                                                                          const {
597 
598   if (hasDynamicExceptionSpec()) {
599     OS << " throw(";
600     if (getExceptionSpecType() == EST_MSAny)
601       OS << "...";
602     else
603       for (unsigned I = 0, N = getNumExceptions(); I != N; ++I) {
604         if (I)
605           OS << ", ";
606 
607         OS << getExceptionType(I).stream(Policy);
608       }
609     OS << ')';
610   } else if (isNoexceptExceptionSpec(getExceptionSpecType())) {
611     OS << " noexcept";
612     if (getExceptionSpecType() == EST_ComputedNoexcept) {
613       OS << '(';
614       if (getNoexceptExpr())
615         getNoexceptExpr()->printPretty(OS, nullptr, Policy);
616       OS << ')';
617     }
618   }
619 }
620 
printFunctionProtoBefore(const FunctionProtoType * T,raw_ostream & OS)621 void TypePrinter::printFunctionProtoBefore(const FunctionProtoType *T,
622                                            raw_ostream &OS) {
623   if (T->hasTrailingReturn()) {
624     OS << "auto ";
625     if (!HasEmptyPlaceHolder)
626       OS << '(';
627   } else {
628     // If needed for precedence reasons, wrap the inner part in grouping parens.
629     SaveAndRestore<bool> PrevPHIsEmpty(HasEmptyPlaceHolder, false);
630     printBefore(T->getReturnType(), OS);
631     if (!PrevPHIsEmpty.get())
632       OS << '(';
633   }
634 }
635 
getParameterABISpelling(ParameterABI ABI)636 llvm::StringRef clang::getParameterABISpelling(ParameterABI ABI) {
637   switch (ABI) {
638   case ParameterABI::Ordinary:
639     llvm_unreachable("asking for spelling of ordinary parameter ABI");
640   case ParameterABI::SwiftContext:
641     return "swift_context";
642   case ParameterABI::SwiftErrorResult:
643     return "swift_error_result";
644   case ParameterABI::SwiftIndirectResult:
645     return "swift_indirect_result";
646   }
647   llvm_unreachable("bad parameter ABI kind");
648 }
649 
printFunctionProtoAfter(const FunctionProtoType * T,raw_ostream & OS)650 void TypePrinter::printFunctionProtoAfter(const FunctionProtoType *T,
651                                           raw_ostream &OS) {
652   // If needed for precedence reasons, wrap the inner part in grouping parens.
653   if (!HasEmptyPlaceHolder)
654     OS << ')';
655   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
656 
657   OS << '(';
658   {
659     ParamPolicyRAII ParamPolicy(Policy);
660     for (unsigned i = 0, e = T->getNumParams(); i != e; ++i) {
661       if (i) OS << ", ";
662 
663       auto EPI = T->getExtParameterInfo(i);
664       if (EPI.isConsumed()) OS << "__attribute__((ns_consumed)) ";
665       auto ABI = EPI.getABI();
666       if (ABI != ParameterABI::Ordinary)
667         OS << "__attribute__((" << getParameterABISpelling(ABI) << ")) ";
668 
669       print(T->getParamType(i), OS, StringRef());
670     }
671   }
672 
673   if (T->isVariadic()) {
674     if (T->getNumParams())
675       OS << ", ";
676     OS << "...";
677   } else if (T->getNumParams() == 0 && Policy.UseVoidForZeroParams) {
678     // Do not emit int() if we have a proto, emit 'int(void)'.
679     OS << "void";
680   }
681 
682   OS << ')';
683 
684   FunctionType::ExtInfo Info = T->getExtInfo();
685 
686   if (!InsideCCAttribute) {
687     switch (Info.getCC()) {
688     case CC_C:
689       // The C calling convention is the default on the vast majority of platforms
690       // we support.  If the user wrote it explicitly, it will usually be printed
691       // while traversing the AttributedType.  If the type has been desugared, let
692       // the canonical spelling be the implicit calling convention.
693       // FIXME: It would be better to be explicit in certain contexts, such as a
694       // cdecl function typedef used to declare a member function with the
695       // Microsoft C++ ABI.
696       break;
697     case CC_X86StdCall:
698       OS << " __attribute__((stdcall))";
699       break;
700     case CC_X86FastCall:
701       OS << " __attribute__((fastcall))";
702       break;
703     case CC_X86ThisCall:
704       OS << " __attribute__((thiscall))";
705       break;
706     case CC_X86VectorCall:
707       OS << " __attribute__((vectorcall))";
708       break;
709     case CC_X86Pascal:
710       OS << " __attribute__((pascal))";
711       break;
712     case CC_AAPCS:
713       OS << " __attribute__((pcs(\"aapcs\")))";
714       break;
715     case CC_AAPCS_VFP:
716       OS << " __attribute__((pcs(\"aapcs-vfp\")))";
717       break;
718     case CC_IntelOclBicc:
719       OS << " __attribute__((intel_ocl_bicc))";
720       break;
721     case CC_X86_64Win64:
722       OS << " __attribute__((ms_abi))";
723       break;
724     case CC_X86_64SysV:
725       OS << " __attribute__((sysv_abi))";
726       break;
727     case CC_SpirFunction:
728     case CC_OpenCLKernel:
729       // Do nothing. These CCs are not available as attributes.
730       break;
731     case CC_Swift:
732       OS << " __attribute__((swiftcall))";
733       break;
734     case CC_PreserveMost:
735       OS << " __attribute__((preserve_most))";
736       break;
737     case CC_PreserveAll:
738       OS << " __attribute__((preserve_all))";
739       break;
740     }
741   }
742 
743   if (Info.getNoReturn())
744     OS << " __attribute__((noreturn))";
745   if (Info.getRegParm())
746     OS << " __attribute__((regparm ("
747        << Info.getRegParm() << ")))";
748 
749   if (unsigned quals = T->getTypeQuals()) {
750     OS << ' ';
751     AppendTypeQualList(OS, quals, Policy.Restrict);
752   }
753 
754   switch (T->getRefQualifier()) {
755   case RQ_None:
756     break;
757 
758   case RQ_LValue:
759     OS << " &";
760     break;
761 
762   case RQ_RValue:
763     OS << " &&";
764     break;
765   }
766   T->printExceptionSpecification(OS, Policy);
767 
768   if (T->hasTrailingReturn()) {
769     OS << " -> ";
770     print(T->getReturnType(), OS, StringRef());
771   } else
772     printAfter(T->getReturnType(), OS);
773 }
774 
printFunctionNoProtoBefore(const FunctionNoProtoType * T,raw_ostream & OS)775 void TypePrinter::printFunctionNoProtoBefore(const FunctionNoProtoType *T,
776                                              raw_ostream &OS) {
777   // If needed for precedence reasons, wrap the inner part in grouping parens.
778   SaveAndRestore<bool> PrevPHIsEmpty(HasEmptyPlaceHolder, false);
779   printBefore(T->getReturnType(), OS);
780   if (!PrevPHIsEmpty.get())
781     OS << '(';
782 }
printFunctionNoProtoAfter(const FunctionNoProtoType * T,raw_ostream & OS)783 void TypePrinter::printFunctionNoProtoAfter(const FunctionNoProtoType *T,
784                                             raw_ostream &OS) {
785   // If needed for precedence reasons, wrap the inner part in grouping parens.
786   if (!HasEmptyPlaceHolder)
787     OS << ')';
788   SaveAndRestore<bool> NonEmptyPH(HasEmptyPlaceHolder, false);
789 
790   OS << "()";
791   if (T->getNoReturnAttr())
792     OS << " __attribute__((noreturn))";
793   printAfter(T->getReturnType(), OS);
794 }
795 
printTypeSpec(const NamedDecl * D,raw_ostream & OS)796 void TypePrinter::printTypeSpec(const NamedDecl *D, raw_ostream &OS) {
797   IdentifierInfo *II = D->getIdentifier();
798   OS << II->getName();
799   spaceBeforePlaceHolder(OS);
800 }
801 
printUnresolvedUsingBefore(const UnresolvedUsingType * T,raw_ostream & OS)802 void TypePrinter::printUnresolvedUsingBefore(const UnresolvedUsingType *T,
803                                              raw_ostream &OS) {
804   printTypeSpec(T->getDecl(), OS);
805 }
printUnresolvedUsingAfter(const UnresolvedUsingType * T,raw_ostream & OS)806 void TypePrinter::printUnresolvedUsingAfter(const UnresolvedUsingType *T,
807                                              raw_ostream &OS) { }
808 
printTypedefBefore(const TypedefType * T,raw_ostream & OS)809 void TypePrinter::printTypedefBefore(const TypedefType *T, raw_ostream &OS) {
810   printTypeSpec(T->getDecl(), OS);
811 }
printTypedefAfter(const TypedefType * T,raw_ostream & OS)812 void TypePrinter::printTypedefAfter(const TypedefType *T, raw_ostream &OS) { }
813 
printTypeOfExprBefore(const TypeOfExprType * T,raw_ostream & OS)814 void TypePrinter::printTypeOfExprBefore(const TypeOfExprType *T,
815                                         raw_ostream &OS) {
816   OS << "typeof ";
817   if (T->getUnderlyingExpr())
818     T->getUnderlyingExpr()->printPretty(OS, nullptr, Policy);
819   spaceBeforePlaceHolder(OS);
820 }
printTypeOfExprAfter(const TypeOfExprType * T,raw_ostream & OS)821 void TypePrinter::printTypeOfExprAfter(const TypeOfExprType *T,
822                                        raw_ostream &OS) { }
823 
printTypeOfBefore(const TypeOfType * T,raw_ostream & OS)824 void TypePrinter::printTypeOfBefore(const TypeOfType *T, raw_ostream &OS) {
825   OS << "typeof(";
826   print(T->getUnderlyingType(), OS, StringRef());
827   OS << ')';
828   spaceBeforePlaceHolder(OS);
829 }
printTypeOfAfter(const TypeOfType * T,raw_ostream & OS)830 void TypePrinter::printTypeOfAfter(const TypeOfType *T, raw_ostream &OS) { }
831 
printDecltypeBefore(const DecltypeType * T,raw_ostream & OS)832 void TypePrinter::printDecltypeBefore(const DecltypeType *T, raw_ostream &OS) {
833   OS << "decltype(";
834   if (T->getUnderlyingExpr())
835     T->getUnderlyingExpr()->printPretty(OS, nullptr, Policy);
836   OS << ')';
837   spaceBeforePlaceHolder(OS);
838 }
printDecltypeAfter(const DecltypeType * T,raw_ostream & OS)839 void TypePrinter::printDecltypeAfter(const DecltypeType *T, raw_ostream &OS) { }
840 
printUnaryTransformBefore(const UnaryTransformType * T,raw_ostream & OS)841 void TypePrinter::printUnaryTransformBefore(const UnaryTransformType *T,
842                                             raw_ostream &OS) {
843   IncludeStrongLifetimeRAII Strong(Policy);
844 
845   switch (T->getUTTKind()) {
846     case UnaryTransformType::EnumUnderlyingType:
847       OS << "__underlying_type(";
848       print(T->getBaseType(), OS, StringRef());
849       OS << ')';
850       spaceBeforePlaceHolder(OS);
851       return;
852   }
853 
854   printBefore(T->getBaseType(), OS);
855 }
printUnaryTransformAfter(const UnaryTransformType * T,raw_ostream & OS)856 void TypePrinter::printUnaryTransformAfter(const UnaryTransformType *T,
857                                            raw_ostream &OS) {
858   IncludeStrongLifetimeRAII Strong(Policy);
859 
860   switch (T->getUTTKind()) {
861     case UnaryTransformType::EnumUnderlyingType:
862       return;
863   }
864 
865   printAfter(T->getBaseType(), OS);
866 }
867 
printAutoBefore(const AutoType * T,raw_ostream & OS)868 void TypePrinter::printAutoBefore(const AutoType *T, raw_ostream &OS) {
869   // If the type has been deduced, do not print 'auto'.
870   if (!T->getDeducedType().isNull()) {
871     printBefore(T->getDeducedType(), OS);
872   } else {
873     switch (T->getKeyword()) {
874     case AutoTypeKeyword::Auto: OS << "auto"; break;
875     case AutoTypeKeyword::DecltypeAuto: OS << "decltype(auto)"; break;
876     case AutoTypeKeyword::GNUAutoType: OS << "__auto_type"; break;
877     }
878     spaceBeforePlaceHolder(OS);
879   }
880 }
printAutoAfter(const AutoType * T,raw_ostream & OS)881 void TypePrinter::printAutoAfter(const AutoType *T, raw_ostream &OS) {
882   // If the type has been deduced, do not print 'auto'.
883   if (!T->getDeducedType().isNull())
884     printAfter(T->getDeducedType(), OS);
885 }
886 
printAtomicBefore(const AtomicType * T,raw_ostream & OS)887 void TypePrinter::printAtomicBefore(const AtomicType *T, raw_ostream &OS) {
888   IncludeStrongLifetimeRAII Strong(Policy);
889 
890   OS << "_Atomic(";
891   print(T->getValueType(), OS, StringRef());
892   OS << ')';
893   spaceBeforePlaceHolder(OS);
894 }
printAtomicAfter(const AtomicType * T,raw_ostream & OS)895 void TypePrinter::printAtomicAfter(const AtomicType *T, raw_ostream &OS) { }
896 
printPipeBefore(const PipeType * T,raw_ostream & OS)897 void TypePrinter::printPipeBefore(const PipeType *T, raw_ostream &OS) {
898   IncludeStrongLifetimeRAII Strong(Policy);
899 
900   OS << "pipe ";
901   print(T->getElementType(), OS, StringRef());
902   spaceBeforePlaceHolder(OS);
903 }
904 
printPipeAfter(const PipeType * T,raw_ostream & OS)905 void TypePrinter::printPipeAfter(const PipeType *T, raw_ostream &OS) {
906 }
907 /// Appends the given scope to the end of a string.
AppendScope(DeclContext * DC,raw_ostream & OS)908 void TypePrinter::AppendScope(DeclContext *DC, raw_ostream &OS) {
909   if (DC->isTranslationUnit()) return;
910   if (DC->isFunctionOrMethod()) return;
911   AppendScope(DC->getParent(), OS);
912 
913   if (NamespaceDecl *NS = dyn_cast<NamespaceDecl>(DC)) {
914     if (Policy.SuppressUnwrittenScope &&
915         (NS->isAnonymousNamespace() || NS->isInline()))
916       return;
917     if (NS->getIdentifier())
918       OS << NS->getName() << "::";
919     else
920       OS << "(anonymous namespace)::";
921   } else if (ClassTemplateSpecializationDecl *Spec
922                = dyn_cast<ClassTemplateSpecializationDecl>(DC)) {
923     IncludeStrongLifetimeRAII Strong(Policy);
924     OS << Spec->getIdentifier()->getName();
925     const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs();
926     TemplateSpecializationType::PrintTemplateArgumentList(
927         OS, TemplateArgs.asArray(), Policy);
928     OS << "::";
929   } else if (TagDecl *Tag = dyn_cast<TagDecl>(DC)) {
930     if (TypedefNameDecl *Typedef = Tag->getTypedefNameForAnonDecl())
931       OS << Typedef->getIdentifier()->getName() << "::";
932     else if (Tag->getIdentifier())
933       OS << Tag->getIdentifier()->getName() << "::";
934     else
935       return;
936   }
937 }
938 
printTag(TagDecl * D,raw_ostream & OS)939 void TypePrinter::printTag(TagDecl *D, raw_ostream &OS) {
940   if (Policy.IncludeTagDefinition) {
941     PrintingPolicy SubPolicy = Policy;
942     SubPolicy.IncludeTagDefinition = false;
943     D->print(OS, SubPolicy, Indentation);
944     spaceBeforePlaceHolder(OS);
945     return;
946   }
947 
948   bool HasKindDecoration = false;
949 
950   // We don't print tags unless this is an elaborated type.
951   // In C, we just assume every RecordType is an elaborated type.
952   if (!Policy.SuppressTagKeyword && !D->getTypedefNameForAnonDecl()) {
953     HasKindDecoration = true;
954     OS << D->getKindName();
955     OS << ' ';
956   }
957 
958   // Compute the full nested-name-specifier for this type.
959   // In C, this will always be empty except when the type
960   // being printed is anonymous within other Record.
961   if (!Policy.SuppressScope)
962     AppendScope(D->getDeclContext(), OS);
963 
964   if (const IdentifierInfo *II = D->getIdentifier())
965     OS << II->getName();
966   else if (TypedefNameDecl *Typedef = D->getTypedefNameForAnonDecl()) {
967     assert(Typedef->getIdentifier() && "Typedef without identifier?");
968     OS << Typedef->getIdentifier()->getName();
969   } else {
970     // Make an unambiguous representation for anonymous types, e.g.
971     //   (anonymous enum at /usr/include/string.h:120:9)
972     OS << (Policy.MSVCFormatting ? '`' : '(');
973 
974     if (isa<CXXRecordDecl>(D) && cast<CXXRecordDecl>(D)->isLambda()) {
975       OS << "lambda";
976       HasKindDecoration = true;
977     } else {
978       OS << "anonymous";
979     }
980 
981     if (Policy.AnonymousTagLocations) {
982       // Suppress the redundant tag keyword if we just printed one.
983       // We don't have to worry about ElaboratedTypes here because you can't
984       // refer to an anonymous type with one.
985       if (!HasKindDecoration)
986         OS << " " << D->getKindName();
987 
988       PresumedLoc PLoc = D->getASTContext().getSourceManager().getPresumedLoc(
989           D->getLocation());
990       if (PLoc.isValid()) {
991         OS << " at " << PLoc.getFilename()
992            << ':' << PLoc.getLine()
993            << ':' << PLoc.getColumn();
994       }
995     }
996 
997     OS << (Policy.MSVCFormatting ? '\'' : ')');
998   }
999 
1000   // If this is a class template specialization, print the template
1001   // arguments.
1002   if (ClassTemplateSpecializationDecl *Spec
1003         = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1004     ArrayRef<TemplateArgument> Args;
1005     if (TypeSourceInfo *TAW = Spec->getTypeAsWritten()) {
1006       const TemplateSpecializationType *TST =
1007         cast<TemplateSpecializationType>(TAW->getType());
1008       Args = TST->template_arguments();
1009     } else {
1010       const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs();
1011       Args = TemplateArgs.asArray();
1012     }
1013     IncludeStrongLifetimeRAII Strong(Policy);
1014     TemplateSpecializationType::PrintTemplateArgumentList(OS, Args, Policy);
1015   }
1016 
1017   spaceBeforePlaceHolder(OS);
1018 }
1019 
printRecordBefore(const RecordType * T,raw_ostream & OS)1020 void TypePrinter::printRecordBefore(const RecordType *T, raw_ostream &OS) {
1021   printTag(T->getDecl(), OS);
1022 }
printRecordAfter(const RecordType * T,raw_ostream & OS)1023 void TypePrinter::printRecordAfter(const RecordType *T, raw_ostream &OS) { }
1024 
printEnumBefore(const EnumType * T,raw_ostream & OS)1025 void TypePrinter::printEnumBefore(const EnumType *T, raw_ostream &OS) {
1026   printTag(T->getDecl(), OS);
1027 }
printEnumAfter(const EnumType * T,raw_ostream & OS)1028 void TypePrinter::printEnumAfter(const EnumType *T, raw_ostream &OS) { }
1029 
printTemplateTypeParmBefore(const TemplateTypeParmType * T,raw_ostream & OS)1030 void TypePrinter::printTemplateTypeParmBefore(const TemplateTypeParmType *T,
1031                                               raw_ostream &OS) {
1032   if (IdentifierInfo *Id = T->getIdentifier())
1033     OS << Id->getName();
1034   else
1035     OS << "type-parameter-" << T->getDepth() << '-' << T->getIndex();
1036   spaceBeforePlaceHolder(OS);
1037 }
printTemplateTypeParmAfter(const TemplateTypeParmType * T,raw_ostream & OS)1038 void TypePrinter::printTemplateTypeParmAfter(const TemplateTypeParmType *T,
1039                                              raw_ostream &OS) { }
1040 
printSubstTemplateTypeParmBefore(const SubstTemplateTypeParmType * T,raw_ostream & OS)1041 void TypePrinter::printSubstTemplateTypeParmBefore(
1042                                              const SubstTemplateTypeParmType *T,
1043                                              raw_ostream &OS) {
1044   IncludeStrongLifetimeRAII Strong(Policy);
1045   printBefore(T->getReplacementType(), OS);
1046 }
printSubstTemplateTypeParmAfter(const SubstTemplateTypeParmType * T,raw_ostream & OS)1047 void TypePrinter::printSubstTemplateTypeParmAfter(
1048                                              const SubstTemplateTypeParmType *T,
1049                                              raw_ostream &OS) {
1050   IncludeStrongLifetimeRAII Strong(Policy);
1051   printAfter(T->getReplacementType(), OS);
1052 }
1053 
printSubstTemplateTypeParmPackBefore(const SubstTemplateTypeParmPackType * T,raw_ostream & OS)1054 void TypePrinter::printSubstTemplateTypeParmPackBefore(
1055                                         const SubstTemplateTypeParmPackType *T,
1056                                         raw_ostream &OS) {
1057   IncludeStrongLifetimeRAII Strong(Policy);
1058   printTemplateTypeParmBefore(T->getReplacedParameter(), OS);
1059 }
printSubstTemplateTypeParmPackAfter(const SubstTemplateTypeParmPackType * T,raw_ostream & OS)1060 void TypePrinter::printSubstTemplateTypeParmPackAfter(
1061                                         const SubstTemplateTypeParmPackType *T,
1062                                         raw_ostream &OS) {
1063   IncludeStrongLifetimeRAII Strong(Policy);
1064   printTemplateTypeParmAfter(T->getReplacedParameter(), OS);
1065 }
1066 
printTemplateSpecializationBefore(const TemplateSpecializationType * T,raw_ostream & OS)1067 void TypePrinter::printTemplateSpecializationBefore(
1068                                             const TemplateSpecializationType *T,
1069                                             raw_ostream &OS) {
1070   IncludeStrongLifetimeRAII Strong(Policy);
1071   T->getTemplateName().print(OS, Policy);
1072 
1073   TemplateSpecializationType::PrintTemplateArgumentList(
1074       OS, T->template_arguments(), Policy);
1075   spaceBeforePlaceHolder(OS);
1076 }
printTemplateSpecializationAfter(const TemplateSpecializationType * T,raw_ostream & OS)1077 void TypePrinter::printTemplateSpecializationAfter(
1078                                             const TemplateSpecializationType *T,
1079                                             raw_ostream &OS) { }
1080 
printInjectedClassNameBefore(const InjectedClassNameType * T,raw_ostream & OS)1081 void TypePrinter::printInjectedClassNameBefore(const InjectedClassNameType *T,
1082                                                raw_ostream &OS) {
1083   printTemplateSpecializationBefore(T->getInjectedTST(), OS);
1084 }
printInjectedClassNameAfter(const InjectedClassNameType * T,raw_ostream & OS)1085 void TypePrinter::printInjectedClassNameAfter(const InjectedClassNameType *T,
1086                                                raw_ostream &OS) { }
1087 
printElaboratedBefore(const ElaboratedType * T,raw_ostream & OS)1088 void TypePrinter::printElaboratedBefore(const ElaboratedType *T,
1089                                         raw_ostream &OS) {
1090   // The tag definition will take care of these.
1091   if (!Policy.IncludeTagDefinition)
1092   {
1093     OS << TypeWithKeyword::getKeywordName(T->getKeyword());
1094     if (T->getKeyword() != ETK_None)
1095       OS << " ";
1096     NestedNameSpecifier* Qualifier = T->getQualifier();
1097     if (Qualifier)
1098       Qualifier->print(OS, Policy);
1099   }
1100 
1101   ElaboratedTypePolicyRAII PolicyRAII(Policy);
1102   printBefore(T->getNamedType(), OS);
1103 }
printElaboratedAfter(const ElaboratedType * T,raw_ostream & OS)1104 void TypePrinter::printElaboratedAfter(const ElaboratedType *T,
1105                                         raw_ostream &OS) {
1106   ElaboratedTypePolicyRAII PolicyRAII(Policy);
1107   printAfter(T->getNamedType(), OS);
1108 }
1109 
printParenBefore(const ParenType * T,raw_ostream & OS)1110 void TypePrinter::printParenBefore(const ParenType *T, raw_ostream &OS) {
1111   if (!HasEmptyPlaceHolder && !isa<FunctionType>(T->getInnerType())) {
1112     printBefore(T->getInnerType(), OS);
1113     OS << '(';
1114   } else
1115     printBefore(T->getInnerType(), OS);
1116 }
printParenAfter(const ParenType * T,raw_ostream & OS)1117 void TypePrinter::printParenAfter(const ParenType *T, raw_ostream &OS) {
1118   if (!HasEmptyPlaceHolder && !isa<FunctionType>(T->getInnerType())) {
1119     OS << ')';
1120     printAfter(T->getInnerType(), OS);
1121   } else
1122     printAfter(T->getInnerType(), OS);
1123 }
1124 
printDependentNameBefore(const DependentNameType * T,raw_ostream & OS)1125 void TypePrinter::printDependentNameBefore(const DependentNameType *T,
1126                                            raw_ostream &OS) {
1127   OS << TypeWithKeyword::getKeywordName(T->getKeyword());
1128   if (T->getKeyword() != ETK_None)
1129     OS << " ";
1130 
1131   T->getQualifier()->print(OS, Policy);
1132 
1133   OS << T->getIdentifier()->getName();
1134   spaceBeforePlaceHolder(OS);
1135 }
printDependentNameAfter(const DependentNameType * T,raw_ostream & OS)1136 void TypePrinter::printDependentNameAfter(const DependentNameType *T,
1137                                           raw_ostream &OS) { }
1138 
printDependentTemplateSpecializationBefore(const DependentTemplateSpecializationType * T,raw_ostream & OS)1139 void TypePrinter::printDependentTemplateSpecializationBefore(
1140         const DependentTemplateSpecializationType *T, raw_ostream &OS) {
1141   IncludeStrongLifetimeRAII Strong(Policy);
1142 
1143   OS << TypeWithKeyword::getKeywordName(T->getKeyword());
1144   if (T->getKeyword() != ETK_None)
1145     OS << " ";
1146 
1147   if (T->getQualifier())
1148     T->getQualifier()->print(OS, Policy);
1149   OS << T->getIdentifier()->getName();
1150   TemplateSpecializationType::PrintTemplateArgumentList(OS,
1151                                                         T->template_arguments(),
1152                                                         Policy);
1153   spaceBeforePlaceHolder(OS);
1154 }
printDependentTemplateSpecializationAfter(const DependentTemplateSpecializationType * T,raw_ostream & OS)1155 void TypePrinter::printDependentTemplateSpecializationAfter(
1156         const DependentTemplateSpecializationType *T, raw_ostream &OS) { }
1157 
printPackExpansionBefore(const PackExpansionType * T,raw_ostream & OS)1158 void TypePrinter::printPackExpansionBefore(const PackExpansionType *T,
1159                                            raw_ostream &OS) {
1160   printBefore(T->getPattern(), OS);
1161 }
printPackExpansionAfter(const PackExpansionType * T,raw_ostream & OS)1162 void TypePrinter::printPackExpansionAfter(const PackExpansionType *T,
1163                                           raw_ostream &OS) {
1164   printAfter(T->getPattern(), OS);
1165   OS << "...";
1166 }
1167 
printAttributedBefore(const AttributedType * T,raw_ostream & OS)1168 void TypePrinter::printAttributedBefore(const AttributedType *T,
1169                                         raw_ostream &OS) {
1170   // Prefer the macro forms of the GC and ownership qualifiers.
1171   if (T->getAttrKind() == AttributedType::attr_objc_gc ||
1172       T->getAttrKind() == AttributedType::attr_objc_ownership)
1173     return printBefore(T->getEquivalentType(), OS);
1174 
1175   if (T->getAttrKind() == AttributedType::attr_objc_kindof)
1176     OS << "__kindof ";
1177 
1178   printBefore(T->getModifiedType(), OS);
1179 
1180   if (T->isMSTypeSpec()) {
1181     switch (T->getAttrKind()) {
1182     default: return;
1183     case AttributedType::attr_ptr32: OS << " __ptr32"; break;
1184     case AttributedType::attr_ptr64: OS << " __ptr64"; break;
1185     case AttributedType::attr_sptr: OS << " __sptr"; break;
1186     case AttributedType::attr_uptr: OS << " __uptr"; break;
1187     }
1188     spaceBeforePlaceHolder(OS);
1189   }
1190 
1191   // Print nullability type specifiers.
1192   if (T->getAttrKind() == AttributedType::attr_nonnull ||
1193       T->getAttrKind() == AttributedType::attr_nullable ||
1194       T->getAttrKind() == AttributedType::attr_null_unspecified) {
1195     if (T->getAttrKind() == AttributedType::attr_nonnull)
1196       OS << " _Nonnull";
1197     else if (T->getAttrKind() == AttributedType::attr_nullable)
1198       OS << " _Nullable";
1199     else if (T->getAttrKind() == AttributedType::attr_null_unspecified)
1200       OS << " _Null_unspecified";
1201     else
1202       llvm_unreachable("unhandled nullability");
1203     spaceBeforePlaceHolder(OS);
1204   }
1205 }
1206 
printAttributedAfter(const AttributedType * T,raw_ostream & OS)1207 void TypePrinter::printAttributedAfter(const AttributedType *T,
1208                                        raw_ostream &OS) {
1209   // Prefer the macro forms of the GC and ownership qualifiers.
1210   if (T->getAttrKind() == AttributedType::attr_objc_gc ||
1211       T->getAttrKind() == AttributedType::attr_objc_ownership)
1212     return printAfter(T->getEquivalentType(), OS);
1213 
1214   if (T->getAttrKind() == AttributedType::attr_objc_kindof)
1215     return;
1216 
1217   // TODO: not all attributes are GCC-style attributes.
1218   if (T->isMSTypeSpec())
1219     return;
1220 
1221   // Nothing to print after.
1222   if (T->getAttrKind() == AttributedType::attr_nonnull ||
1223       T->getAttrKind() == AttributedType::attr_nullable ||
1224       T->getAttrKind() == AttributedType::attr_null_unspecified)
1225     return printAfter(T->getModifiedType(), OS);
1226 
1227   // If this is a calling convention attribute, don't print the implicit CC from
1228   // the modified type.
1229   SaveAndRestore<bool> MaybeSuppressCC(InsideCCAttribute, T->isCallingConv());
1230 
1231   printAfter(T->getModifiedType(), OS);
1232 
1233   // Don't print the inert __unsafe_unretained attribute at all.
1234   if (T->getAttrKind() == AttributedType::attr_objc_inert_unsafe_unretained)
1235     return;
1236 
1237   // Print nullability type specifiers that occur after
1238   if (T->getAttrKind() == AttributedType::attr_nonnull ||
1239       T->getAttrKind() == AttributedType::attr_nullable ||
1240       T->getAttrKind() == AttributedType::attr_null_unspecified) {
1241     if (T->getAttrKind() == AttributedType::attr_nonnull)
1242       OS << " _Nonnull";
1243     else if (T->getAttrKind() == AttributedType::attr_nullable)
1244       OS << " _Nullable";
1245     else if (T->getAttrKind() == AttributedType::attr_null_unspecified)
1246       OS << " _Null_unspecified";
1247     else
1248       llvm_unreachable("unhandled nullability");
1249 
1250     return;
1251   }
1252 
1253   OS << " __attribute__((";
1254   switch (T->getAttrKind()) {
1255   default: llvm_unreachable("This attribute should have been handled already");
1256   case AttributedType::attr_address_space:
1257     OS << "address_space(";
1258     OS << T->getEquivalentType().getAddressSpace();
1259     OS << ')';
1260     break;
1261 
1262   case AttributedType::attr_vector_size: {
1263     OS << "__vector_size__(";
1264     if (const VectorType *vector =T->getEquivalentType()->getAs<VectorType>()) {
1265       OS << vector->getNumElements();
1266       OS << " * sizeof(";
1267       print(vector->getElementType(), OS, StringRef());
1268       OS << ')';
1269     }
1270     OS << ')';
1271     break;
1272   }
1273 
1274   case AttributedType::attr_neon_vector_type:
1275   case AttributedType::attr_neon_polyvector_type: {
1276     if (T->getAttrKind() == AttributedType::attr_neon_vector_type)
1277       OS << "neon_vector_type(";
1278     else
1279       OS << "neon_polyvector_type(";
1280     const VectorType *vector = T->getEquivalentType()->getAs<VectorType>();
1281     OS << vector->getNumElements();
1282     OS << ')';
1283     break;
1284   }
1285 
1286   case AttributedType::attr_regparm: {
1287     // FIXME: When Sema learns to form this AttributedType, avoid printing the
1288     // attribute again in printFunctionProtoAfter.
1289     OS << "regparm(";
1290     QualType t = T->getEquivalentType();
1291     while (!t->isFunctionType())
1292       t = t->getPointeeType();
1293     OS << t->getAs<FunctionType>()->getRegParmType();
1294     OS << ')';
1295     break;
1296   }
1297 
1298   case AttributedType::attr_objc_gc: {
1299     OS << "objc_gc(";
1300 
1301     QualType tmp = T->getEquivalentType();
1302     while (tmp.getObjCGCAttr() == Qualifiers::GCNone) {
1303       QualType next = tmp->getPointeeType();
1304       if (next == tmp) break;
1305       tmp = next;
1306     }
1307 
1308     if (tmp.isObjCGCWeak())
1309       OS << "weak";
1310     else
1311       OS << "strong";
1312     OS << ')';
1313     break;
1314   }
1315 
1316   case AttributedType::attr_objc_ownership:
1317     OS << "objc_ownership(";
1318     switch (T->getEquivalentType().getObjCLifetime()) {
1319     case Qualifiers::OCL_None: llvm_unreachable("no ownership!");
1320     case Qualifiers::OCL_ExplicitNone: OS << "none"; break;
1321     case Qualifiers::OCL_Strong: OS << "strong"; break;
1322     case Qualifiers::OCL_Weak: OS << "weak"; break;
1323     case Qualifiers::OCL_Autoreleasing: OS << "autoreleasing"; break;
1324     }
1325     OS << ')';
1326     break;
1327 
1328   // FIXME: When Sema learns to form this AttributedType, avoid printing the
1329   // attribute again in printFunctionProtoAfter.
1330   case AttributedType::attr_noreturn: OS << "noreturn"; break;
1331 
1332   case AttributedType::attr_cdecl: OS << "cdecl"; break;
1333   case AttributedType::attr_fastcall: OS << "fastcall"; break;
1334   case AttributedType::attr_stdcall: OS << "stdcall"; break;
1335   case AttributedType::attr_thiscall: OS << "thiscall"; break;
1336   case AttributedType::attr_swiftcall: OS << "swiftcall"; break;
1337   case AttributedType::attr_vectorcall: OS << "vectorcall"; break;
1338   case AttributedType::attr_pascal: OS << "pascal"; break;
1339   case AttributedType::attr_ms_abi: OS << "ms_abi"; break;
1340   case AttributedType::attr_sysv_abi: OS << "sysv_abi"; break;
1341   case AttributedType::attr_pcs:
1342   case AttributedType::attr_pcs_vfp: {
1343     OS << "pcs(";
1344    QualType t = T->getEquivalentType();
1345    while (!t->isFunctionType())
1346      t = t->getPointeeType();
1347    OS << (t->getAs<FunctionType>()->getCallConv() == CC_AAPCS ?
1348          "\"aapcs\"" : "\"aapcs-vfp\"");
1349    OS << ')';
1350    break;
1351   }
1352   case AttributedType::attr_inteloclbicc: OS << "inteloclbicc"; break;
1353   case AttributedType::attr_preserve_most:
1354     OS << "preserve_most";
1355     break;
1356   case AttributedType::attr_preserve_all:
1357     OS << "preserve_all";
1358     break;
1359   }
1360   OS << "))";
1361 }
1362 
printObjCInterfaceBefore(const ObjCInterfaceType * T,raw_ostream & OS)1363 void TypePrinter::printObjCInterfaceBefore(const ObjCInterfaceType *T,
1364                                            raw_ostream &OS) {
1365   OS << T->getDecl()->getName();
1366   spaceBeforePlaceHolder(OS);
1367 }
printObjCInterfaceAfter(const ObjCInterfaceType * T,raw_ostream & OS)1368 void TypePrinter::printObjCInterfaceAfter(const ObjCInterfaceType *T,
1369                                           raw_ostream &OS) { }
1370 
printObjCObjectBefore(const ObjCObjectType * T,raw_ostream & OS)1371 void TypePrinter::printObjCObjectBefore(const ObjCObjectType *T,
1372                                         raw_ostream &OS) {
1373   if (T->qual_empty() && T->isUnspecializedAsWritten() &&
1374       !T->isKindOfTypeAsWritten())
1375     return printBefore(T->getBaseType(), OS);
1376 
1377   if (T->isKindOfTypeAsWritten())
1378     OS << "__kindof ";
1379 
1380   print(T->getBaseType(), OS, StringRef());
1381 
1382   if (T->isSpecializedAsWritten()) {
1383     bool isFirst = true;
1384     OS << '<';
1385     for (auto typeArg : T->getTypeArgsAsWritten()) {
1386       if (isFirst)
1387         isFirst = false;
1388       else
1389         OS << ",";
1390 
1391       print(typeArg, OS, StringRef());
1392     }
1393     OS << '>';
1394   }
1395 
1396   if (!T->qual_empty()) {
1397     bool isFirst = true;
1398     OS << '<';
1399     for (const auto *I : T->quals()) {
1400       if (isFirst)
1401         isFirst = false;
1402       else
1403         OS << ',';
1404       OS << I->getName();
1405     }
1406     OS << '>';
1407   }
1408 
1409   spaceBeforePlaceHolder(OS);
1410 }
printObjCObjectAfter(const ObjCObjectType * T,raw_ostream & OS)1411 void TypePrinter::printObjCObjectAfter(const ObjCObjectType *T,
1412                                         raw_ostream &OS) {
1413   if (T->qual_empty() && T->isUnspecializedAsWritten() &&
1414       !T->isKindOfTypeAsWritten())
1415     return printAfter(T->getBaseType(), OS);
1416 }
1417 
printObjCObjectPointerBefore(const ObjCObjectPointerType * T,raw_ostream & OS)1418 void TypePrinter::printObjCObjectPointerBefore(const ObjCObjectPointerType *T,
1419                                                raw_ostream &OS) {
1420   printBefore(T->getPointeeType(), OS);
1421 
1422   // If we need to print the pointer, print it now.
1423   if (!T->isObjCIdType() && !T->isObjCQualifiedIdType() &&
1424       !T->isObjCClassType() && !T->isObjCQualifiedClassType()) {
1425     if (HasEmptyPlaceHolder)
1426       OS << ' ';
1427     OS << '*';
1428   }
1429 }
printObjCObjectPointerAfter(const ObjCObjectPointerType * T,raw_ostream & OS)1430 void TypePrinter::printObjCObjectPointerAfter(const ObjCObjectPointerType *T,
1431                                               raw_ostream &OS) { }
1432 
1433 void TemplateSpecializationType::
PrintTemplateArgumentList(raw_ostream & OS,const TemplateArgumentListInfo & Args,const PrintingPolicy & Policy)1434   PrintTemplateArgumentList(raw_ostream &OS,
1435                             const TemplateArgumentListInfo &Args,
1436                             const PrintingPolicy &Policy) {
1437   return PrintTemplateArgumentList(OS,
1438                                    Args.arguments(),
1439                                    Policy);
1440 }
1441 
PrintTemplateArgumentList(raw_ostream & OS,ArrayRef<TemplateArgument> Args,const PrintingPolicy & Policy,bool SkipBrackets)1442 void TemplateSpecializationType::PrintTemplateArgumentList(
1443     raw_ostream &OS, ArrayRef<TemplateArgument> Args,
1444     const PrintingPolicy &Policy, bool SkipBrackets) {
1445   const char *Comma = Policy.MSVCFormatting ? "," : ", ";
1446   if (!SkipBrackets)
1447     OS << '<';
1448 
1449   bool needSpace = false;
1450   bool FirstArg = true;
1451   for (const TemplateArgument &Arg : Args) {
1452     // Print the argument into a string.
1453     SmallString<128> Buf;
1454     llvm::raw_svector_ostream ArgOS(Buf);
1455     if (Arg.getKind() == TemplateArgument::Pack) {
1456       if (Arg.pack_size() && !FirstArg)
1457         OS << Comma;
1458       PrintTemplateArgumentList(ArgOS,
1459                                 Arg.getPackAsArray(),
1460                                 Policy, true);
1461     } else {
1462       if (!FirstArg)
1463         OS << Comma;
1464       Arg.print(Policy, ArgOS);
1465     }
1466     StringRef ArgString = ArgOS.str();
1467 
1468     // If this is the first argument and its string representation
1469     // begins with the global scope specifier ('::foo'), add a space
1470     // to avoid printing the diagraph '<:'.
1471     if (FirstArg && !ArgString.empty() && ArgString[0] == ':')
1472       OS << ' ';
1473 
1474     OS << ArgString;
1475 
1476     needSpace = (!ArgString.empty() && ArgString.back() == '>');
1477     FirstArg = false;
1478   }
1479 
1480   // If the last character of our string is '>', add another space to
1481   // keep the two '>''s separate tokens. We don't *have* to do this in
1482   // C++0x, but it's still good hygiene.
1483   if (needSpace)
1484     OS << ' ';
1485 
1486   if (!SkipBrackets)
1487     OS << '>';
1488 }
1489 
1490 // Sadly, repeat all that with TemplateArgLoc.
1491 void TemplateSpecializationType::
PrintTemplateArgumentList(raw_ostream & OS,ArrayRef<TemplateArgumentLoc> Args,const PrintingPolicy & Policy)1492 PrintTemplateArgumentList(raw_ostream &OS,
1493                           ArrayRef<TemplateArgumentLoc> Args,
1494                           const PrintingPolicy &Policy) {
1495   OS << '<';
1496   const char *Comma = Policy.MSVCFormatting ? "," : ", ";
1497 
1498   bool needSpace = false;
1499   bool FirstArg = true;
1500   for (const TemplateArgumentLoc &Arg : Args) {
1501     if (!FirstArg)
1502       OS << Comma;
1503 
1504     // Print the argument into a string.
1505     SmallString<128> Buf;
1506     llvm::raw_svector_ostream ArgOS(Buf);
1507     if (Arg.getArgument().getKind() == TemplateArgument::Pack) {
1508       PrintTemplateArgumentList(ArgOS,
1509                                 Arg.getArgument().getPackAsArray(),
1510                                 Policy, true);
1511     } else {
1512       Arg.getArgument().print(Policy, ArgOS);
1513     }
1514     StringRef ArgString = ArgOS.str();
1515 
1516     // If this is the first argument and its string representation
1517     // begins with the global scope specifier ('::foo'), add a space
1518     // to avoid printing the diagraph '<:'.
1519     if (FirstArg && !ArgString.empty() && ArgString[0] == ':')
1520       OS << ' ';
1521 
1522     OS << ArgString;
1523 
1524     needSpace = (!ArgString.empty() && ArgString.back() == '>');
1525     FirstArg = false;
1526   }
1527 
1528   // If the last character of our string is '>', add another space to
1529   // keep the two '>''s separate tokens. We don't *have* to do this in
1530   // C++0x, but it's still good hygiene.
1531   if (needSpace)
1532     OS << ' ';
1533 
1534   OS << '>';
1535 }
1536 
getAsString() const1537 std::string Qualifiers::getAsString() const {
1538   LangOptions LO;
1539   return getAsString(PrintingPolicy(LO));
1540 }
1541 
1542 // Appends qualifiers to the given string, separated by spaces.  Will
1543 // prefix a space if the string is non-empty.  Will not append a final
1544 // space.
getAsString(const PrintingPolicy & Policy) const1545 std::string Qualifiers::getAsString(const PrintingPolicy &Policy) const {
1546   SmallString<64> Buf;
1547   llvm::raw_svector_ostream StrOS(Buf);
1548   print(StrOS, Policy);
1549   return StrOS.str();
1550 }
1551 
isEmptyWhenPrinted(const PrintingPolicy & Policy) const1552 bool Qualifiers::isEmptyWhenPrinted(const PrintingPolicy &Policy) const {
1553   if (getCVRQualifiers())
1554     return false;
1555 
1556   if (getAddressSpace())
1557     return false;
1558 
1559   if (getObjCGCAttr())
1560     return false;
1561 
1562   if (Qualifiers::ObjCLifetime lifetime = getObjCLifetime())
1563     if (!(lifetime == Qualifiers::OCL_Strong && Policy.SuppressStrongLifetime))
1564       return false;
1565 
1566   return true;
1567 }
1568 
1569 // Appends qualifiers to the given string, separated by spaces.  Will
1570 // prefix a space if the string is non-empty.  Will not append a final
1571 // space.
print(raw_ostream & OS,const PrintingPolicy & Policy,bool appendSpaceIfNonEmpty) const1572 void Qualifiers::print(raw_ostream &OS, const PrintingPolicy& Policy,
1573                        bool appendSpaceIfNonEmpty) const {
1574   bool addSpace = false;
1575 
1576   unsigned quals = getCVRQualifiers();
1577   if (quals) {
1578     AppendTypeQualList(OS, quals, Policy.Restrict);
1579     addSpace = true;
1580   }
1581   if (hasUnaligned()) {
1582     if (addSpace)
1583       OS << ' ';
1584     OS << "__unaligned";
1585     addSpace = true;
1586   }
1587   if (unsigned addrspace = getAddressSpace()) {
1588     if (addSpace)
1589       OS << ' ';
1590     addSpace = true;
1591     switch (addrspace) {
1592       case LangAS::opencl_global:
1593         OS << "__global";
1594         break;
1595       case LangAS::opencl_local:
1596         OS << "__local";
1597         break;
1598       case LangAS::opencl_constant:
1599         OS << "__constant";
1600         break;
1601       case LangAS::opencl_generic:
1602         OS << "__generic";
1603         break;
1604       default:
1605         OS << "__attribute__((address_space(";
1606         OS << addrspace;
1607         OS << ")))";
1608     }
1609   }
1610   if (Qualifiers::GC gc = getObjCGCAttr()) {
1611     if (addSpace)
1612       OS << ' ';
1613     addSpace = true;
1614     if (gc == Qualifiers::Weak)
1615       OS << "__weak";
1616     else
1617       OS << "__strong";
1618   }
1619   if (Qualifiers::ObjCLifetime lifetime = getObjCLifetime()) {
1620     if (!(lifetime == Qualifiers::OCL_Strong && Policy.SuppressStrongLifetime)){
1621       if (addSpace)
1622         OS << ' ';
1623       addSpace = true;
1624     }
1625 
1626     switch (lifetime) {
1627     case Qualifiers::OCL_None: llvm_unreachable("none but true");
1628     case Qualifiers::OCL_ExplicitNone: OS << "__unsafe_unretained"; break;
1629     case Qualifiers::OCL_Strong:
1630       if (!Policy.SuppressStrongLifetime)
1631         OS << "__strong";
1632       break;
1633 
1634     case Qualifiers::OCL_Weak: OS << "__weak"; break;
1635     case Qualifiers::OCL_Autoreleasing: OS << "__autoreleasing"; break;
1636     }
1637   }
1638 
1639   if (appendSpaceIfNonEmpty && addSpace)
1640     OS << ' ';
1641 }
1642 
getAsString(const PrintingPolicy & Policy) const1643 std::string QualType::getAsString(const PrintingPolicy &Policy) const {
1644   std::string S;
1645   getAsStringInternal(S, Policy);
1646   return S;
1647 }
1648 
getAsString(const Type * ty,Qualifiers qs)1649 std::string QualType::getAsString(const Type *ty, Qualifiers qs) {
1650   std::string buffer;
1651   LangOptions options;
1652   getAsStringInternal(ty, qs, buffer, PrintingPolicy(options));
1653   return buffer;
1654 }
1655 
print(const Type * ty,Qualifiers qs,raw_ostream & OS,const PrintingPolicy & policy,const Twine & PlaceHolder,unsigned Indentation)1656 void QualType::print(const Type *ty, Qualifiers qs,
1657                      raw_ostream &OS, const PrintingPolicy &policy,
1658                      const Twine &PlaceHolder, unsigned Indentation) {
1659   SmallString<128> PHBuf;
1660   StringRef PH = PlaceHolder.toStringRef(PHBuf);
1661 
1662   TypePrinter(policy, Indentation).print(ty, qs, OS, PH);
1663 }
1664 
getAsStringInternal(const Type * ty,Qualifiers qs,std::string & buffer,const PrintingPolicy & policy)1665 void QualType::getAsStringInternal(const Type *ty, Qualifiers qs,
1666                                    std::string &buffer,
1667                                    const PrintingPolicy &policy) {
1668   SmallString<256> Buf;
1669   llvm::raw_svector_ostream StrOS(Buf);
1670   TypePrinter(policy).print(ty, qs, StrOS, buffer);
1671   std::string str = StrOS.str();
1672   buffer.swap(str);
1673 }
1674