DeclPrinter.cpp revision 900fc6388e803868a34b9483510c345e9b49d7eb 
1//===--- DeclPrinter.cpp - Printing implementation for Decl ASTs ----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Decl::dump method, which pretty print the
11// AST back out to C/Objective-C/C++/Objective-C++ code.
12//
13//===----------------------------------------------------------------------===//
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/DeclVisitor.h"
16#include "clang/AST/Decl.h"
17#include "clang/AST/DeclCXX.h"
18#include "clang/AST/DeclObjC.h"
19#include "clang/AST/Expr.h"
20#include "clang/AST/ExprCXX.h"
21#include "clang/AST/PrettyPrinter.h"
22#include "llvm/Support/raw_ostream.h"
23using namespace clang;
24
25namespace {
26  class DeclPrinter : public DeclVisitor<DeclPrinter> {
27    llvm::raw_ostream &Out;
28    ASTContext &Context;
29    PrintingPolicy Policy;
30    unsigned Indentation;
31
32    llvm::raw_ostream& Indent() { return Indent(Indentation); }
33    llvm::raw_ostream& Indent(unsigned Indentation);
34    void ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls);
35
36    void Print(AccessSpecifier AS);
37
38  public:
39    DeclPrinter(llvm::raw_ostream &Out, ASTContext &Context,
40                const PrintingPolicy &Policy,
41                unsigned Indentation = 0)
42      : Out(Out), Context(Context), Policy(Policy), Indentation(Indentation) { }
43
44    void VisitDeclContext(DeclContext *DC, bool Indent = true);
45
46    void VisitTranslationUnitDecl(TranslationUnitDecl *D);
47    void VisitTypedefDecl(TypedefDecl *D);
48    void VisitEnumDecl(EnumDecl *D);
49    void VisitRecordDecl(RecordDecl *D);
50    void VisitEnumConstantDecl(EnumConstantDecl *D);
51    void VisitFunctionDecl(FunctionDecl *D);
52    void VisitFieldDecl(FieldDecl *D);
53    void VisitVarDecl(VarDecl *D);
54    void VisitParmVarDecl(ParmVarDecl *D);
55    void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
56    void VisitNamespaceDecl(NamespaceDecl *D);
57    void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
58    void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
59    void VisitCXXRecordDecl(CXXRecordDecl *D);
60    void VisitLinkageSpecDecl(LinkageSpecDecl *D);
61    void VisitTemplateDecl(TemplateDecl *D);
62    void VisitObjCMethodDecl(ObjCMethodDecl *D);
63    void VisitObjCClassDecl(ObjCClassDecl *D);
64    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
65    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
66    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
67    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
68    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
69    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
70    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
71    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
72    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
73    void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
74    void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
75    void VisitUsingDecl(UsingDecl *D);
76    void VisitUsingShadowDecl(UsingShadowDecl *D);
77  };
78}
79
80void Decl::print(llvm::raw_ostream &Out, unsigned Indentation) const {
81  print(Out, getASTContext().PrintingPolicy, Indentation);
82}
83
84void Decl::print(llvm::raw_ostream &Out, const PrintingPolicy &Policy,
85                 unsigned Indentation) const {
86  DeclPrinter Printer(Out, getASTContext(), Policy, Indentation);
87  Printer.Visit(const_cast<Decl*>(this));
88}
89
90static QualType GetBaseType(QualType T) {
91  // FIXME: This should be on the Type class!
92  QualType BaseType = T;
93  while (!BaseType->isSpecifierType()) {
94    if (isa<TypedefType>(BaseType))
95      break;
96    else if (const PointerType* PTy = BaseType->getAs<PointerType>())
97      BaseType = PTy->getPointeeType();
98    else if (const ArrayType* ATy = dyn_cast<ArrayType>(BaseType))
99      BaseType = ATy->getElementType();
100    else if (const FunctionType* FTy = BaseType->getAs<FunctionType>())
101      BaseType = FTy->getResultType();
102    else if (const VectorType *VTy = BaseType->getAs<VectorType>())
103      BaseType = VTy->getElementType();
104    else
105      assert(0 && "Unknown declarator!");
106  }
107  return BaseType;
108}
109
110static QualType getDeclType(Decl* D) {
111  if (TypedefDecl* TDD = dyn_cast<TypedefDecl>(D))
112    return TDD->getUnderlyingType();
113  if (ValueDecl* VD = dyn_cast<ValueDecl>(D))
114    return VD->getType();
115  return QualType();
116}
117
118void Decl::printGroup(Decl** Begin, unsigned NumDecls,
119                      llvm::raw_ostream &Out, const PrintingPolicy &Policy,
120                      unsigned Indentation) {
121  if (NumDecls == 1) {
122    (*Begin)->print(Out, Policy, Indentation);
123    return;
124  }
125
126  Decl** End = Begin + NumDecls;
127  TagDecl* TD = dyn_cast<TagDecl>(*Begin);
128  if (TD)
129    ++Begin;
130
131  PrintingPolicy SubPolicy(Policy);
132  if (TD && TD->isDefinition()) {
133    TD->print(Out, Policy, Indentation);
134    Out << " ";
135    SubPolicy.SuppressTag = true;
136  }
137
138  bool isFirst = true;
139  for ( ; Begin != End; ++Begin) {
140    if (isFirst) {
141      SubPolicy.SuppressSpecifiers = false;
142      isFirst = false;
143    } else {
144      if (!isFirst) Out << ", ";
145      SubPolicy.SuppressSpecifiers = true;
146    }
147
148    (*Begin)->print(Out, SubPolicy, Indentation);
149  }
150}
151
152void DeclContext::dumpDeclContext() const {
153  // Get the translation unit
154  const DeclContext *DC = this;
155  while (!DC->isTranslationUnit())
156    DC = DC->getParent();
157
158  ASTContext &Ctx = cast<TranslationUnitDecl>(DC)->getASTContext();
159  DeclPrinter Printer(llvm::errs(), Ctx, Ctx.PrintingPolicy, 0);
160  Printer.VisitDeclContext(const_cast<DeclContext *>(this), /*Indent=*/false);
161}
162
163void Decl::dump() const {
164  print(llvm::errs());
165}
166
167llvm::raw_ostream& DeclPrinter::Indent(unsigned Indentation) {
168  for (unsigned i = 0; i != Indentation; ++i)
169    Out << "  ";
170  return Out;
171}
172
173void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) {
174  this->Indent();
175  Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
176  Out << ";\n";
177  Decls.clear();
178
179}
180
181void DeclPrinter::Print(AccessSpecifier AS) {
182  switch(AS) {
183  case AS_none:      assert(0 && "No access specifier!"); break;
184  case AS_public:    Out << "public"; break;
185  case AS_protected: Out << "protected"; break;
186  case AS_private:   Out << " private"; break;
187  }
188}
189
190//----------------------------------------------------------------------------
191// Common C declarations
192//----------------------------------------------------------------------------
193
194void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
195  if (Indent)
196    Indentation += Policy.Indentation;
197
198  bool PrintAccess = isa<CXXRecordDecl>(DC);
199  AccessSpecifier CurAS = AS_none;
200
201  llvm::SmallVector<Decl*, 2> Decls;
202  for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
203       D != DEnd; ++D) {
204    if (!Policy.Dump) {
205      // Skip over implicit declarations in pretty-printing mode.
206      if (D->isImplicit()) continue;
207      // FIXME: Ugly hack so we don't pretty-print the builtin declaration
208      // of __builtin_va_list.  There should be some other way to check that.
209      if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() ==
210          "__builtin_va_list")
211        continue;
212    }
213
214    if (PrintAccess) {
215      AccessSpecifier AS = D->getAccess();
216
217      if (AS != CurAS) {
218        if (Indent)
219          this->Indent(Indentation - Policy.Indentation);
220        Print(AS);
221        Out << ":\n";
222        CurAS = AS;
223      }
224    }
225
226    // The next bits of code handles stuff like "struct {int x;} a,b"; we're
227    // forced to merge the declarations because there's no other way to
228    // refer to the struct in question.  This limited merging is safe without
229    // a bunch of other checks because it only merges declarations directly
230    // referring to the tag, not typedefs.
231    //
232    // Check whether the current declaration should be grouped with a previous
233    // unnamed struct.
234    QualType CurDeclType = getDeclType(*D);
235    if (!Decls.empty() && !CurDeclType.isNull()) {
236      QualType BaseType = GetBaseType(CurDeclType);
237      if (!BaseType.isNull() && isa<TagType>(BaseType) &&
238          cast<TagType>(BaseType)->getDecl() == Decls[0]) {
239        Decls.push_back(*D);
240        continue;
241      }
242    }
243
244    // If we have a merged group waiting to be handled, handle it now.
245    if (!Decls.empty())
246      ProcessDeclGroup(Decls);
247
248    // If the current declaration is an unnamed tag type, save it
249    // so we can merge it with the subsequent declaration(s) using it.
250    if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
251      Decls.push_back(*D);
252      continue;
253    }
254    this->Indent();
255    Visit(*D);
256
257    // FIXME: Need to be able to tell the DeclPrinter when
258    const char *Terminator = 0;
259    if (isa<FunctionDecl>(*D) &&
260        cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
261      Terminator = 0;
262    else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
263      Terminator = 0;
264    else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
265             isa<ObjCImplementationDecl>(*D) ||
266             isa<ObjCInterfaceDecl>(*D) ||
267             isa<ObjCProtocolDecl>(*D) ||
268             isa<ObjCCategoryImplDecl>(*D) ||
269             isa<ObjCCategoryDecl>(*D))
270      Terminator = 0;
271    else if (isa<EnumConstantDecl>(*D)) {
272      DeclContext::decl_iterator Next = D;
273      ++Next;
274      if (Next != DEnd)
275        Terminator = ",";
276    } else
277      Terminator = ";";
278
279    if (Terminator)
280      Out << Terminator;
281    Out << "\n";
282  }
283
284  if (!Decls.empty())
285    ProcessDeclGroup(Decls);
286
287  if (Indent)
288    Indentation -= Policy.Indentation;
289}
290
291void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
292  VisitDeclContext(D, false);
293}
294
295void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
296  std::string S = D->getNameAsString();
297  D->getUnderlyingType().getAsStringInternal(S, Policy);
298  if (!Policy.SuppressSpecifiers)
299    Out << "typedef ";
300  Out << S;
301}
302
303void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
304  Out << "enum " << D << " {\n";
305  VisitDeclContext(D);
306  Indent() << "}";
307}
308
309void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
310  Out << D->getKindName();
311  if (D->getIdentifier())
312    Out << ' ' << D;
313
314  if (D->isDefinition()) {
315    Out << " {\n";
316    VisitDeclContext(D);
317    Indent() << "}";
318  }
319}
320
321void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
322  Out << D;
323  if (Expr *Init = D->getInitExpr()) {
324    Out << " = ";
325    Init->printPretty(Out, Context, 0, Policy, Indentation);
326  }
327}
328
329void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
330  if (!Policy.SuppressSpecifiers) {
331    switch (D->getStorageClass()) {
332    case FunctionDecl::None: break;
333    case FunctionDecl::Extern: Out << "extern "; break;
334    case FunctionDecl::Static: Out << "static "; break;
335    case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break;
336    }
337
338    if (D->isInlineSpecified())           Out << "inline ";
339    if (D->isVirtualAsWritten()) Out << "virtual ";
340  }
341
342  PrintingPolicy SubPolicy(Policy);
343  SubPolicy.SuppressSpecifiers = false;
344  std::string Proto = D->getNameAsString();
345  if (isa<FunctionType>(D->getType().getTypePtr())) {
346    const FunctionType *AFT = D->getType()->getAs<FunctionType>();
347
348    const FunctionProtoType *FT = 0;
349    if (D->hasWrittenPrototype())
350      FT = dyn_cast<FunctionProtoType>(AFT);
351
352    Proto += "(";
353    if (FT) {
354      llvm::raw_string_ostream POut(Proto);
355      DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation);
356      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
357        if (i) POut << ", ";
358        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
359      }
360
361      if (FT->isVariadic()) {
362        if (D->getNumParams()) POut << ", ";
363        POut << "...";
364      }
365    } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) {
366      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
367        if (i)
368          Proto += ", ";
369        Proto += D->getParamDecl(i)->getNameAsString();
370      }
371    }
372
373    Proto += ")";
374
375    if (FT && FT->hasExceptionSpec()) {
376      Proto += " throw(";
377      if (FT->hasAnyExceptionSpec())
378        Proto += "...";
379      else
380        for (unsigned I = 0, N = FT->getNumExceptions(); I != N; ++I) {
381          if (I)
382            Proto += ", ";
383
384
385          std::string ExceptionType;
386          FT->getExceptionType(I).getAsStringInternal(ExceptionType, SubPolicy);
387          Proto += ExceptionType;
388        }
389      Proto += ")";
390    }
391
392    if (D->hasAttr<NoReturnAttr>())
393      Proto += " __attribute((noreturn))";
394    if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) {
395      if (CDecl->getNumBaseOrMemberInitializers() > 0) {
396        Proto += " : ";
397        Out << Proto;
398        Proto.clear();
399        for (CXXConstructorDecl::init_const_iterator B = CDecl->init_begin(),
400             E = CDecl->init_end();
401             B != E; ++B) {
402          CXXBaseOrMemberInitializer * BMInitializer = (*B);
403          if (B != CDecl->init_begin())
404            Out << ", ";
405          if (BMInitializer->isMemberInitializer()) {
406            FieldDecl *FD = BMInitializer->getMember();
407            Out << FD;
408          } else {
409            Out << QualType(BMInitializer->getBaseClass(), 0).getAsString();
410          }
411
412          Out << "(";
413          if (!BMInitializer->getInit()) {
414            // Nothing to print
415          } else {
416            Expr *Init = BMInitializer->getInit();
417            if (CXXExprWithTemporaries *Tmp
418                  = dyn_cast<CXXExprWithTemporaries>(Init))
419              Init = Tmp->getSubExpr();
420
421            Init = Init->IgnoreParens();
422
423            Expr *SimpleInit = 0;
424            Expr **Args = 0;
425            unsigned NumArgs = 0;
426            if (ParenListExpr *ParenList = dyn_cast<ParenListExpr>(Init)) {
427              Args = ParenList->getExprs();
428              NumArgs = ParenList->getNumExprs();
429            } else if (CXXConstructExpr *Construct
430                                          = dyn_cast<CXXConstructExpr>(Init)) {
431              Args = Construct->getArgs();
432              NumArgs = Construct->getNumArgs();
433            } else
434              SimpleInit = Init;
435
436            if (SimpleInit)
437              SimpleInit->printPretty(Out, Context, 0, Policy, Indentation);
438            else {
439              for (unsigned I = 0; I != NumArgs; ++I) {
440                if (isa<CXXDefaultArgExpr>(Args[I]))
441                  break;
442
443                if (I)
444                  Out << ", ";
445                Args[I]->printPretty(Out, Context, 0, Policy, Indentation);
446              }
447            }
448          }
449          Out << ")";
450        }
451      }
452    }
453    else
454      AFT->getResultType().getAsStringInternal(Proto, Policy);
455  } else {
456    D->getType().getAsStringInternal(Proto, Policy);
457  }
458
459  Out << Proto;
460
461  if (D->isPure())
462    Out << " = 0";
463  else if (D->isDeleted())
464    Out << " = delete";
465  else if (D->isThisDeclarationADefinition()) {
466    if (!D->hasPrototype() && D->getNumParams()) {
467      // This is a K&R function definition, so we need to print the
468      // parameters.
469      Out << '\n';
470      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
471      Indentation += Policy.Indentation;
472      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
473        Indent();
474        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
475        Out << ";\n";
476      }
477      Indentation -= Policy.Indentation;
478    } else
479      Out << ' ';
480
481    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
482    Out << '\n';
483  }
484}
485
486void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
487  if (!Policy.SuppressSpecifiers && D->isMutable())
488    Out << "mutable ";
489
490  std::string Name = D->getNameAsString();
491  D->getType().getAsStringInternal(Name, Policy);
492  Out << Name;
493
494  if (D->isBitField()) {
495    Out << " : ";
496    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
497  }
498}
499
500void DeclPrinter::VisitVarDecl(VarDecl *D) {
501  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
502    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
503
504  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
505    Out << "__thread ";
506
507  std::string Name = D->getNameAsString();
508  QualType T = D->getType();
509  if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D))
510    T = Parm->getOriginalType();
511  T.getAsStringInternal(Name, Policy);
512  Out << Name;
513  if (D->getInit()) {
514    if (D->hasCXXDirectInitializer())
515      Out << "(";
516    else
517      Out << " = ";
518    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
519    if (D->hasCXXDirectInitializer())
520      Out << ")";
521  }
522}
523
524void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
525  VisitVarDecl(D);
526}
527
528void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
529  Out << "__asm (";
530  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
531  Out << ")";
532}
533
534//----------------------------------------------------------------------------
535// C++ declarations
536//----------------------------------------------------------------------------
537void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
538  Out << "namespace " << D << " {\n";
539  VisitDeclContext(D);
540  Indent() << "}";
541}
542
543void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
544  Out << "using namespace ";
545  if (D->getQualifier())
546    D->getQualifier()->print(Out, Policy);
547  Out << D->getNominatedNamespaceAsWritten();
548}
549
550void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
551  Out << "namespace " << D << " = ";
552  if (D->getQualifier())
553    D->getQualifier()->print(Out, Policy);
554  Out << D->getAliasedNamespace();
555}
556
557void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
558  Out << D->getKindName();
559  if (D->getIdentifier())
560    Out << ' ' << D;
561
562  if (D->isDefinition()) {
563    // Print the base classes
564    if (D->getNumBases()) {
565      Out << " : ";
566      for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
567             BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
568        if (Base != D->bases_begin())
569          Out << ", ";
570
571        if (Base->isVirtual())
572          Out << "virtual ";
573
574        AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
575        if (AS != AS_none)
576          Print(AS);
577        Out << " " << Base->getType().getAsString(Policy);
578      }
579    }
580
581    // Print the class definition
582    // FIXME: Doesn't print access specifiers, e.g., "public:"
583    Out << " {\n";
584    VisitDeclContext(D);
585    Indent() << "}";
586  }
587}
588
589void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
590  const char *l;
591  if (D->getLanguage() == LinkageSpecDecl::lang_c)
592    l = "C";
593  else {
594    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
595           "unknown language in linkage specification");
596    l = "C++";
597  }
598
599  Out << "extern \"" << l << "\" ";
600  if (D->hasBraces()) {
601    Out << "{\n";
602    VisitDeclContext(D);
603    Indent() << "}";
604  } else
605    Visit(*D->decls_begin());
606}
607
608void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
609  Out << "template <";
610
611  TemplateParameterList *Params = D->getTemplateParameters();
612  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
613    if (i != 0)
614      Out << ", ";
615
616    const Decl *Param = Params->getParam(i);
617    if (const TemplateTypeParmDecl *TTP =
618          dyn_cast<TemplateTypeParmDecl>(Param)) {
619
620      QualType ParamType =
621        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
622
623      if (TTP->wasDeclaredWithTypename())
624        Out << "typename ";
625      else
626        Out << "class ";
627
628      if (TTP->isParameterPack())
629        Out << "... ";
630
631      Out << ParamType.getAsString(Policy);
632
633      if (TTP->hasDefaultArgument()) {
634        Out << " = ";
635        Out << TTP->getDefaultArgument().getAsString(Policy);
636      };
637    } else if (const NonTypeTemplateParmDecl *NTTP =
638                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
639      Out << NTTP->getType().getAsString(Policy);
640
641      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
642        Out << ' ';
643        Out << Name->getName();
644      }
645
646      if (NTTP->hasDefaultArgument()) {
647        Out << " = ";
648        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
649                                                Indentation);
650      }
651    }
652  }
653
654  Out << "> ";
655
656  Visit(D->getTemplatedDecl());
657}
658
659//----------------------------------------------------------------------------
660// Objective-C declarations
661//----------------------------------------------------------------------------
662
663void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
664  Out << "@class ";
665  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
666       I != E; ++I) {
667    if (I != D->begin()) Out << ", ";
668    Out << I->getInterface();
669  }
670}
671
672void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
673  if (OMD->isInstanceMethod())
674    Out << "- ";
675  else
676    Out << "+ ";
677  if (!OMD->getResultType().isNull())
678    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
679
680  std::string name = OMD->getSelector().getAsString();
681  std::string::size_type pos, lastPos = 0;
682  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
683       E = OMD->param_end(); PI != E; ++PI) {
684    // FIXME: selector is missing here!
685    pos = name.find_first_of(":", lastPos);
686    Out << " " << name.substr(lastPos, pos - lastPos);
687    Out << ":(" << (*PI)->getType().getAsString(Policy) << ')' << *PI;
688    lastPos = pos + 1;
689  }
690
691  if (OMD->param_begin() == OMD->param_end())
692    Out << " " << name;
693
694  if (OMD->isVariadic())
695      Out << ", ...";
696
697  if (OMD->getBody()) {
698    Out << ' ';
699    OMD->getBody()->printPretty(Out, Context, 0, Policy);
700    Out << '\n';
701  }
702}
703
704void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
705  std::string I = OID->getNameAsString();
706  ObjCInterfaceDecl *SID = OID->getSuperClass();
707
708  if (SID)
709    Out << "@implementation " << I << " : " << SID;
710  else
711    Out << "@implementation " << I;
712  Out << "\n";
713  VisitDeclContext(OID, false);
714  Out << "@end";
715}
716
717void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
718  std::string I = OID->getNameAsString();
719  ObjCInterfaceDecl *SID = OID->getSuperClass();
720
721  if (SID)
722    Out << "@interface " << I << " : " << SID;
723  else
724    Out << "@interface " << I;
725
726  // Protocols?
727  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
728  if (!Protocols.empty()) {
729    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
730         E = Protocols.end(); I != E; ++I)
731      Out << (I == Protocols.begin() ? '<' : ',') << *I;
732  }
733
734  if (!Protocols.empty())
735    Out << "> ";
736
737  if (OID->ivar_size() > 0) {
738    Out << "{\n";
739    Indentation += Policy.Indentation;
740    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
741         E = OID->ivar_end(); I != E; ++I) {
742      Indent() << (*I)->getType().getAsString(Policy) << ' ' << *I << ";\n";
743    }
744    Indentation -= Policy.Indentation;
745    Out << "}\n";
746  }
747
748  VisitDeclContext(OID, false);
749  Out << "@end";
750  // FIXME: implement the rest...
751}
752
753void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
754  Out << "@protocol ";
755  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
756         E = D->protocol_end();
757       I != E; ++I) {
758    if (I != D->protocol_begin()) Out << ", ";
759    Out << *I;
760  }
761}
762
763void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
764  Out << "@protocol " << PID << '\n';
765  VisitDeclContext(PID, false);
766  Out << "@end";
767}
768
769void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
770  Out << "@implementation " << PID->getClassInterface() << '(' << PID << ")\n";
771
772  VisitDeclContext(PID, false);
773  Out << "@end";
774  // FIXME: implement the rest...
775}
776
777void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
778  Out << "@interface " << PID->getClassInterface() << '(' << PID << ")\n";
779  VisitDeclContext(PID, false);
780  Out << "@end";
781
782  // FIXME: implement the rest...
783}
784
785void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
786  Out << "@compatibility_alias " << AID
787      << ' ' << AID->getClassInterface() << ";\n";
788}
789
790/// PrintObjCPropertyDecl - print a property declaration.
791///
792void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
793  if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
794    Out << "@required\n";
795  else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
796    Out << "@optional\n";
797
798  Out << "@property";
799  if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
800    bool first = true;
801    Out << " (";
802    if (PDecl->getPropertyAttributes() &
803        ObjCPropertyDecl::OBJC_PR_readonly) {
804      Out << (first ? ' ' : ',') << "readonly";
805      first = false;
806  }
807
808  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
809    Out << (first ? ' ' : ',') << "getter = "
810        << PDecl->getGetterName().getAsString();
811    first = false;
812  }
813  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
814    Out << (first ? ' ' : ',') << "setter = "
815        << PDecl->getSetterName().getAsString();
816    first = false;
817  }
818
819  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
820    Out << (first ? ' ' : ',') << "assign";
821    first = false;
822  }
823
824  if (PDecl->getPropertyAttributes() &
825      ObjCPropertyDecl::OBJC_PR_readwrite) {
826    Out << (first ? ' ' : ',') << "readwrite";
827    first = false;
828  }
829
830  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
831    Out << (first ? ' ' : ',') << "retain";
832    first = false;
833  }
834
835  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
836    Out << (first ? ' ' : ',') << "copy";
837    first = false;
838  }
839
840  if (PDecl->getPropertyAttributes() &
841      ObjCPropertyDecl::OBJC_PR_nonatomic) {
842    Out << (first ? ' ' : ',') << "nonatomic";
843    first = false;
844  }
845  Out << " )";
846  }
847  Out << ' ' << PDecl->getType().getAsString(Policy) << ' ' << PDecl;
848}
849
850void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
851  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
852    Out << "@synthesize ";
853  else
854    Out << "@dynamic ";
855  Out << PID->getPropertyDecl();
856  if (PID->getPropertyIvarDecl())
857    Out << '=' << PID->getPropertyIvarDecl();
858}
859
860void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
861  Out << "using ";
862  D->getTargetNestedNameDecl()->print(Out, Policy);
863  Out << D;
864}
865
866void
867DeclPrinter::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) {
868  Out << "using typename ";
869  D->getTargetNestedNameSpecifier()->print(Out, Policy);
870  Out << D->getDeclName();
871}
872
873void DeclPrinter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
874  Out << "using ";
875  D->getTargetNestedNameSpecifier()->print(Out, Policy);
876  Out << D->getDeclName();
877}
878
879void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) {
880  // ignore
881}
882