DeclPrinter.cpp revision 198092 
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/PrettyPrinter.h"
21#include "llvm/Support/Compiler.h"
22#include "llvm/Support/Format.h"
23#include "llvm/Support/raw_ostream.h"
24using namespace clang;
25
26namespace {
27  class VISIBILITY_HIDDEN DeclPrinter : public DeclVisitor<DeclPrinter> {
28    llvm::raw_ostream &Out;
29    ASTContext &Context;
30    PrintingPolicy Policy;
31    unsigned Indentation;
32
33    llvm::raw_ostream& Indent();
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 VisitOriginalParmVarDecl(OriginalParmVarDecl *D);
56    void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
57    void VisitOverloadedFunctionDecl(OverloadedFunctionDecl *D);
58    void VisitNamespaceDecl(NamespaceDecl *D);
59    void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
60    void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
61    void VisitCXXRecordDecl(CXXRecordDecl *D);
62    void VisitLinkageSpecDecl(LinkageSpecDecl *D);
63    void VisitTemplateDecl(TemplateDecl *D);
64    void VisitObjCMethodDecl(ObjCMethodDecl *D);
65    void VisitObjCClassDecl(ObjCClassDecl *D);
66    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
67    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
68    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
69    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
70    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
71    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
72    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
73    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
74    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
75    void VisitUnresolvedUsingDecl(UnresolvedUsingDecl *D);
76    void VisitUsingDecl(UsingDecl *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 Decl::dump() const {
153  print(llvm::errs());
154}
155
156llvm::raw_ostream& DeclPrinter::Indent() {
157  for (unsigned i = 0; i < Indentation; ++i)
158    Out << "  ";
159  return Out;
160}
161
162void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) {
163  this->Indent();
164  Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
165  Out << ";\n";
166  Decls.clear();
167
168}
169
170void DeclPrinter::Print(AccessSpecifier AS) {
171  switch(AS) {
172  case AS_none:      assert(0 && "No access specifier!"); break;
173  case AS_public:    Out << "public"; break;
174  case AS_protected: Out << "protected"; break;
175  case AS_private:   Out << " private"; break;
176  }
177}
178
179//----------------------------------------------------------------------------
180// Common C declarations
181//----------------------------------------------------------------------------
182
183void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
184  if (Indent)
185    Indentation += Policy.Indentation;
186
187  bool PrintAccess = isa<CXXRecordDecl>(DC);
188  AccessSpecifier CurAS = AS_none;
189
190  llvm::SmallVector<Decl*, 2> Decls;
191  for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
192       D != DEnd; ++D) {
193    if (!Policy.Dump) {
194      // Skip over implicit declarations in pretty-printing mode.
195      if (D->isImplicit()) continue;
196      // FIXME: Ugly hack so we don't pretty-print the builtin declaration
197      // of __builtin_va_list.  There should be some other way to check that.
198      if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() ==
199          "__builtin_va_list")
200        continue;
201    }
202
203    if (PrintAccess) {
204      AccessSpecifier AS = D->getAccess();
205
206      if (AS != CurAS) {
207        Print(AS);
208        Out << ":\n";
209        CurAS = AS;
210      }
211    }
212
213    // The next bits of code handles stuff like "struct {int x;} a,b"; we're
214    // forced to merge the declarations because there's no other way to
215    // refer to the struct in question.  This limited merging is safe without
216    // a bunch of other checks because it only merges declarations directly
217    // referring to the tag, not typedefs.
218    //
219    // Check whether the current declaration should be grouped with a previous
220    // unnamed struct.
221    QualType CurDeclType = getDeclType(*D);
222    if (!Decls.empty() && !CurDeclType.isNull()) {
223      QualType BaseType = GetBaseType(CurDeclType);
224      if (!BaseType.isNull() && isa<TagType>(BaseType) &&
225          cast<TagType>(BaseType)->getDecl() == Decls[0]) {
226        Decls.push_back(*D);
227        continue;
228      }
229    }
230
231    // If we have a merged group waiting to be handled, handle it now.
232    if (!Decls.empty())
233      ProcessDeclGroup(Decls);
234
235    // If the current declaration is an unnamed tag type, save it
236    // so we can merge it with the subsequent declaration(s) using it.
237    if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
238      Decls.push_back(*D);
239      continue;
240    }
241    this->Indent();
242    Visit(*D);
243
244    // FIXME: Need to be able to tell the DeclPrinter when
245    const char *Terminator = 0;
246    if (isa<FunctionDecl>(*D) &&
247        cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
248      Terminator = 0;
249    else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
250      Terminator = 0;
251    else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
252             isa<ObjCImplementationDecl>(*D) ||
253             isa<ObjCInterfaceDecl>(*D) ||
254             isa<ObjCProtocolDecl>(*D) ||
255             isa<ObjCCategoryImplDecl>(*D) ||
256             isa<ObjCCategoryDecl>(*D))
257      Terminator = 0;
258    else if (isa<EnumConstantDecl>(*D)) {
259      DeclContext::decl_iterator Next = D;
260      ++Next;
261      if (Next != DEnd)
262        Terminator = ",";
263    } else
264      Terminator = ";";
265
266    if (Terminator)
267      Out << Terminator;
268    Out << "\n";
269  }
270
271  if (!Decls.empty())
272    ProcessDeclGroup(Decls);
273
274  if (Indent)
275    Indentation -= Policy.Indentation;
276}
277
278void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
279  VisitDeclContext(D, false);
280}
281
282void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
283  std::string S = D->getNameAsString();
284  D->getUnderlyingType().getAsStringInternal(S, Policy);
285  if (!Policy.SuppressSpecifiers)
286    Out << "typedef ";
287  Out << S;
288}
289
290void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
291  Out << "enum " << D->getNameAsString() << " {\n";
292  VisitDeclContext(D);
293  Indent() << "}";
294}
295
296void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
297  Out << D->getKindName();
298  if (D->getIdentifier()) {
299    Out << " ";
300    Out << D->getNameAsString();
301  }
302
303  if (D->isDefinition()) {
304    Out << " {\n";
305    VisitDeclContext(D);
306    Indent() << "}";
307  }
308}
309
310void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
311  Out << D->getNameAsString();
312  if (Expr *Init = D->getInitExpr()) {
313    Out << " = ";
314    Init->printPretty(Out, Context, 0, Policy, Indentation);
315  }
316}
317
318void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
319  if (!Policy.SuppressSpecifiers) {
320    switch (D->getStorageClass()) {
321    case FunctionDecl::None: break;
322    case FunctionDecl::Extern: Out << "extern "; break;
323    case FunctionDecl::Static: Out << "static "; break;
324    case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break;
325    }
326
327    if (D->isInline())           Out << "inline ";
328    if (D->isVirtualAsWritten()) Out << "virtual ";
329  }
330
331  PrintingPolicy SubPolicy(Policy);
332  SubPolicy.SuppressSpecifiers = false;
333  std::string Proto = D->getNameAsString();
334  if (isa<FunctionType>(D->getType().getTypePtr())) {
335    const FunctionType *AFT = D->getType()->getAs<FunctionType>();
336
337    const FunctionProtoType *FT = 0;
338    if (D->hasWrittenPrototype())
339      FT = dyn_cast<FunctionProtoType>(AFT);
340
341    Proto += "(";
342    if (FT) {
343      llvm::raw_string_ostream POut(Proto);
344      DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation);
345      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
346        if (i) POut << ", ";
347        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
348      }
349
350      if (FT->isVariadic()) {
351        if (D->getNumParams()) POut << ", ";
352        POut << "...";
353      }
354    } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) {
355      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
356        if (i)
357          Proto += ", ";
358        Proto += D->getParamDecl(i)->getNameAsString();
359      }
360    }
361
362    Proto += ")";
363    if (D->hasAttr<NoReturnAttr>())
364      Proto += " __attribute((noreturn))";
365    if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) {
366      if (CDecl->getNumBaseOrMemberInitializers() > 0) {
367        Proto += " : ";
368        Out << Proto;
369        Proto.clear();
370        for (CXXConstructorDecl::init_const_iterator B = CDecl->init_begin(),
371             E = CDecl->init_end();
372             B != E; ++B) {
373          CXXBaseOrMemberInitializer * BMInitializer = (*B);
374          if (B != CDecl->init_begin())
375            Out << ", ";
376          bool hasArguments = (BMInitializer->arg_begin() !=
377                               BMInitializer->arg_end());
378          if (BMInitializer->isMemberInitializer()) {
379            FieldDecl *FD = BMInitializer->getMember();
380            Out <<  FD->getNameAsString();
381          }
382          else // FIXME. skip dependent types for now.
383            if (const RecordType *RT =
384                BMInitializer->getBaseClass()->getAs<RecordType>()) {
385              const CXXRecordDecl *BaseDecl =
386                cast<CXXRecordDecl>(RT->getDecl());
387              Out << BaseDecl->getNameAsString();
388          }
389          if (hasArguments) {
390            Out << "(";
391            for (CXXBaseOrMemberInitializer::const_arg_iterator BE =
392                 BMInitializer->const_arg_begin(),
393                 EE =  BMInitializer->const_arg_end(); BE != EE; ++BE) {
394              if (BE != BMInitializer->const_arg_begin())
395                Out<< ", ";
396              const Expr *Exp = (*BE);
397              Exp->printPretty(Out, Context, 0, Policy, Indentation);
398            }
399            Out << ")";
400          } else
401            Out << "()";
402        }
403      }
404    }
405    else if (CXXDestructorDecl *DDecl = dyn_cast<CXXDestructorDecl>(D)) {
406      if (DDecl->getNumBaseOrMemberDestructions() > 0) {
407        // List order of base/member destruction for visualization purposes.
408        assert (D->isThisDeclarationADefinition() && "Destructor with dtor-list");
409        Proto += "/* : ";
410        for (CXXDestructorDecl::destr_const_iterator *B = DDecl->destr_begin(),
411             *E = DDecl->destr_end();
412             B != E; ++B) {
413          uintptr_t BaseOrMember = (*B);
414          if (B != DDecl->destr_begin())
415            Proto += ", ";
416
417          if (DDecl->isMemberToDestroy(BaseOrMember)) {
418            FieldDecl *FD = DDecl->getMemberToDestroy(BaseOrMember);
419            Proto += "~";
420            Proto += FD->getNameAsString();
421          }
422          else // FIXME. skip dependent types for now.
423            if (const RecordType *RT =
424                  DDecl->getAnyBaseClassToDestroy(BaseOrMember)
425                    ->getAs<RecordType>()) {
426              const CXXRecordDecl *BaseDecl =
427                cast<CXXRecordDecl>(RT->getDecl());
428              Proto += "~";
429              Proto += BaseDecl->getNameAsString();
430            }
431          Proto += "()";
432        }
433        Proto += " */";
434      }
435    }
436    else
437      AFT->getResultType().getAsStringInternal(Proto, Policy);
438  } else {
439    D->getType().getAsStringInternal(Proto, Policy);
440  }
441
442  Out << Proto;
443
444  if (D->isPure())
445    Out << " = 0";
446  else if (D->isDeleted())
447    Out << " = delete";
448  else if (D->isThisDeclarationADefinition()) {
449    if (!D->hasPrototype() && D->getNumParams()) {
450      // This is a K&R function definition, so we need to print the
451      // parameters.
452      Out << '\n';
453      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
454      Indentation += Policy.Indentation;
455      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
456        Indent();
457        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
458        Out << ";\n";
459      }
460      Indentation -= Policy.Indentation;
461    } else
462      Out << ' ';
463
464    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
465    Out << '\n';
466  }
467}
468
469void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
470  if (!Policy.SuppressSpecifiers && D->isMutable())
471    Out << "mutable ";
472
473  std::string Name = D->getNameAsString();
474  D->getType().getAsStringInternal(Name, Policy);
475  Out << Name;
476
477  if (D->isBitField()) {
478    Out << " : ";
479    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
480  }
481}
482
483void DeclPrinter::VisitVarDecl(VarDecl *D) {
484  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
485    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
486
487  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
488    Out << "__thread ";
489
490  std::string Name = D->getNameAsString();
491  QualType T = D->getType();
492  if (OriginalParmVarDecl *Parm = dyn_cast<OriginalParmVarDecl>(D))
493    T = Parm->getOriginalType();
494  T.getAsStringInternal(Name, Policy);
495  Out << Name;
496  if (D->getInit()) {
497    if (D->hasCXXDirectInitializer())
498      Out << "(";
499    else
500      Out << " = ";
501    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
502    if (D->hasCXXDirectInitializer())
503      Out << ")";
504  }
505}
506
507void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
508  VisitVarDecl(D);
509}
510
511void DeclPrinter::VisitOriginalParmVarDecl(OriginalParmVarDecl *D) {
512  VisitVarDecl(D);
513}
514
515void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
516  Out << "__asm (";
517  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
518  Out << ")";
519}
520
521//----------------------------------------------------------------------------
522// C++ declarations
523//----------------------------------------------------------------------------
524void DeclPrinter::VisitOverloadedFunctionDecl(OverloadedFunctionDecl *D) {
525  assert(false &&
526         "OverloadedFunctionDecls aren't really decls and are never printed");
527}
528
529void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
530  Out << "namespace " << D->getNameAsString() << " {\n";
531  VisitDeclContext(D);
532  Indent() << "}";
533}
534
535void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
536  Out << "using namespace ";
537  if (D->getQualifier())
538    D->getQualifier()->print(Out, Policy);
539  Out << D->getNominatedNamespace()->getNameAsString();
540}
541
542void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
543  Out << "namespace " << D->getNameAsString() << " = ";
544  if (D->getQualifier())
545    D->getQualifier()->print(Out, Policy);
546  Out << D->getAliasedNamespace()->getNameAsString();
547}
548
549void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
550  Out << D->getKindName();
551  if (D->getIdentifier()) {
552    Out << " ";
553    Out << D->getNameAsString();
554  }
555
556  if (D->isDefinition()) {
557    // Print the base classes
558    if (D->getNumBases()) {
559      Out << " : ";
560      for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
561             BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
562        if (Base != D->bases_begin())
563          Out << ", ";
564
565        if (Base->isVirtual())
566          Out << "virtual ";
567
568        AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
569        if (AS != AS_none)
570          Print(AS);
571        Out << " " << Base->getType().getAsString(Policy);
572      }
573    }
574
575    // Print the class definition
576    // FIXME: Doesn't print access specifiers, e.g., "public:"
577    Out << " {\n";
578    VisitDeclContext(D);
579    Indent() << "}";
580  }
581}
582
583void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
584  const char *l;
585  if (D->getLanguage() == LinkageSpecDecl::lang_c)
586    l = "C";
587  else {
588    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
589           "unknown language in linkage specification");
590    l = "C++";
591  }
592
593  Out << "extern \"" << l << "\" ";
594  if (D->hasBraces()) {
595    Out << "{\n";
596    VisitDeclContext(D);
597    Indent() << "}";
598  } else
599    Visit(*D->decls_begin());
600}
601
602void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
603  Out << "template <";
604
605  TemplateParameterList *Params = D->getTemplateParameters();
606  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
607    if (i != 0)
608      Out << ", ";
609
610    const Decl *Param = Params->getParam(i);
611    if (const TemplateTypeParmDecl *TTP =
612          dyn_cast<TemplateTypeParmDecl>(Param)) {
613
614      QualType ParamType =
615        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
616
617      if (TTP->wasDeclaredWithTypename())
618        Out << "typename ";
619      else
620        Out << "class ";
621
622      if (TTP->isParameterPack())
623        Out << "... ";
624
625      Out << ParamType.getAsString(Policy);
626
627      if (TTP->hasDefaultArgument()) {
628        Out << " = ";
629        Out << TTP->getDefaultArgument().getAsString(Policy);
630      };
631    } else if (const NonTypeTemplateParmDecl *NTTP =
632                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
633      Out << NTTP->getType().getAsString(Policy);
634
635      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
636        Out << ' ';
637        Out << Name->getName();
638      }
639
640      if (NTTP->hasDefaultArgument()) {
641        Out << " = ";
642        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
643                                                Indentation);
644      }
645    }
646  }
647
648  Out << "> ";
649
650  Visit(D->getTemplatedDecl());
651}
652
653//----------------------------------------------------------------------------
654// Objective-C declarations
655//----------------------------------------------------------------------------
656
657void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
658  Out << "@class ";
659  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
660       I != E; ++I) {
661    if (I != D->begin()) Out << ", ";
662    Out << (*I)->getNameAsString();
663  }
664}
665
666void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
667  if (OMD->isInstanceMethod())
668    Out << "- ";
669  else
670    Out << "+ ";
671  if (!OMD->getResultType().isNull())
672    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
673
674  std::string name = OMD->getSelector().getAsString();
675  std::string::size_type pos, lastPos = 0;
676  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
677       E = OMD->param_end(); PI != E; ++PI) {
678    // FIXME: selector is missing here!
679    pos = name.find_first_of(":", lastPos);
680    Out << " " << name.substr(lastPos, pos - lastPos);
681    Out << ":(" << (*PI)->getType().getAsString(Policy) << ")"
682        << (*PI)->getNameAsString();
683    lastPos = pos + 1;
684  }
685
686  if (OMD->param_begin() == OMD->param_end())
687    Out << " " << name;
688
689  if (OMD->isVariadic())
690      Out << ", ...";
691
692  if (OMD->getBody()) {
693    Out << ' ';
694    OMD->getBody()->printPretty(Out, Context, 0, Policy);
695    Out << '\n';
696  }
697}
698
699void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
700  std::string I = OID->getNameAsString();
701  ObjCInterfaceDecl *SID = OID->getSuperClass();
702
703  if (SID)
704    Out << "@implementation " << I << " : " << SID->getNameAsString();
705  else
706    Out << "@implementation " << I;
707  Out << "\n";
708  VisitDeclContext(OID, false);
709  Out << "@end";
710}
711
712void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
713  std::string I = OID->getNameAsString();
714  ObjCInterfaceDecl *SID = OID->getSuperClass();
715
716  if (SID)
717    Out << "@interface " << I << " : " << SID->getNameAsString();
718  else
719    Out << "@interface " << I;
720
721  // Protocols?
722  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
723  if (!Protocols.empty()) {
724    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
725         E = Protocols.end(); I != E; ++I)
726      Out << (I == Protocols.begin() ? '<' : ',') << (*I)->getNameAsString();
727  }
728
729  if (!Protocols.empty())
730    Out << "> ";
731
732  if (OID->ivar_size() > 0) {
733    Out << "{\n";
734    Indentation += Policy.Indentation;
735    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
736         E = OID->ivar_end(); I != E; ++I) {
737      Indent() << (*I)->getType().getAsString(Policy)
738          << ' '  << (*I)->getNameAsString() << ";\n";
739    }
740    Indentation -= Policy.Indentation;
741    Out << "}\n";
742  }
743
744  VisitDeclContext(OID, false);
745  Out << "@end";
746  // FIXME: implement the rest...
747}
748
749void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
750  Out << "@protocol ";
751  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
752         E = D->protocol_end();
753       I != E; ++I) {
754    if (I != D->protocol_begin()) Out << ", ";
755    Out << (*I)->getNameAsString();
756  }
757}
758
759void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
760  Out << "@protocol " << PID->getNameAsString() << '\n';
761  VisitDeclContext(PID, false);
762  Out << "@end";
763}
764
765void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
766  Out << "@implementation "
767      << PID->getClassInterface()->getNameAsString()
768      << '(' << PID->getNameAsString() << ")\n";
769
770  VisitDeclContext(PID, false);
771  Out << "@end";
772  // FIXME: implement the rest...
773}
774
775void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
776  Out << "@interface "
777      << PID->getClassInterface()->getNameAsString()
778      << '(' << PID->getNameAsString() << ")\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->getNameAsString()
787      << ' ' << AID->getClassInterface()->getNameAsString() << ";\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)
848  << ' ' << PDecl->getNameAsString();
849}
850
851void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
852  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
853    Out << "@synthesize ";
854  else
855    Out << "@dynamic ";
856  Out << PID->getPropertyDecl()->getNameAsString();
857  if (PID->getPropertyIvarDecl())
858    Out << "=" << PID->getPropertyIvarDecl()->getNameAsString();
859}
860
861void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
862  Out << "using ";
863  D->getTargetNestedNameDecl()->print(Out, Policy);
864  Out << D->getTargetDecl()->getNameAsString();
865}
866
867void DeclPrinter::VisitUnresolvedUsingDecl(UnresolvedUsingDecl *D) {
868  Out << "using ";
869  D->getTargetNestedNameSpecifier()->print(Out, Policy);
870  Out << D->getTargetName().getAsString();
871}
872