DeclPrinter.cpp revision 0ae7b3f1d5403265f693ed75384603ca8fbba74d 
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/raw_ostream.h"
22using namespace clang;
23
24namespace {
25  class DeclPrinter : public DeclVisitor<DeclPrinter> {
26    llvm::raw_ostream &Out;
27    ASTContext &Context;
28    PrintingPolicy Policy;
29    unsigned Indentation;
30
31    llvm::raw_ostream& Indent() { return Indent(Indentation); }
32    llvm::raw_ostream& Indent(unsigned Indentation);
33    void ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls);
34
35    void Print(AccessSpecifier AS);
36
37  public:
38    DeclPrinter(llvm::raw_ostream &Out, ASTContext &Context,
39                const PrintingPolicy &Policy,
40                unsigned Indentation = 0)
41      : Out(Out), Context(Context), Policy(Policy), Indentation(Indentation) { }
42
43    void VisitDeclContext(DeclContext *DC, bool Indent = true);
44
45    void VisitTranslationUnitDecl(TranslationUnitDecl *D);
46    void VisitTypedefDecl(TypedefDecl *D);
47    void VisitEnumDecl(EnumDecl *D);
48    void VisitRecordDecl(RecordDecl *D);
49    void VisitEnumConstantDecl(EnumConstantDecl *D);
50    void VisitFunctionDecl(FunctionDecl *D);
51    void VisitFieldDecl(FieldDecl *D);
52    void VisitVarDecl(VarDecl *D);
53    void VisitParmVarDecl(ParmVarDecl *D);
54    void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
55    void VisitNamespaceDecl(NamespaceDecl *D);
56    void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
57    void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
58    void VisitCXXRecordDecl(CXXRecordDecl *D);
59    void VisitLinkageSpecDecl(LinkageSpecDecl *D);
60    void VisitTemplateDecl(TemplateDecl *D);
61    void VisitObjCMethodDecl(ObjCMethodDecl *D);
62    void VisitObjCClassDecl(ObjCClassDecl *D);
63    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
64    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
65    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
66    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
67    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
68    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
69    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
70    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
71    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
72    void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
73    void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
74    void VisitUsingDecl(UsingDecl *D);
75    void VisitUsingShadowDecl(UsingShadowDecl *D);
76  };
77}
78
79void Decl::print(llvm::raw_ostream &Out, unsigned Indentation) const {
80  print(Out, getASTContext().PrintingPolicy, Indentation);
81}
82
83void Decl::print(llvm::raw_ostream &Out, const PrintingPolicy &Policy,
84                 unsigned Indentation) const {
85  DeclPrinter Printer(Out, getASTContext(), Policy, Indentation);
86  Printer.Visit(const_cast<Decl*>(this));
87}
88
89static QualType GetBaseType(QualType T) {
90  // FIXME: This should be on the Type class!
91  QualType BaseType = T;
92  while (!BaseType->isSpecifierType()) {
93    if (isa<TypedefType>(BaseType))
94      break;
95    else if (const PointerType* PTy = BaseType->getAs<PointerType>())
96      BaseType = PTy->getPointeeType();
97    else if (const ArrayType* ATy = dyn_cast<ArrayType>(BaseType))
98      BaseType = ATy->getElementType();
99    else if (const FunctionType* FTy = BaseType->getAs<FunctionType>())
100      BaseType = FTy->getResultType();
101    else if (const VectorType *VTy = BaseType->getAs<VectorType>())
102      BaseType = VTy->getElementType();
103    else
104      assert(0 && "Unknown declarator!");
105  }
106  return BaseType;
107}
108
109static QualType getDeclType(Decl* D) {
110  if (TypedefDecl* TDD = dyn_cast<TypedefDecl>(D))
111    return TDD->getUnderlyingType();
112  if (ValueDecl* VD = dyn_cast<ValueDecl>(D))
113    return VD->getType();
114  return QualType();
115}
116
117void Decl::printGroup(Decl** Begin, unsigned NumDecls,
118                      llvm::raw_ostream &Out, const PrintingPolicy &Policy,
119                      unsigned Indentation) {
120  if (NumDecls == 1) {
121    (*Begin)->print(Out, Policy, Indentation);
122    return;
123  }
124
125  Decl** End = Begin + NumDecls;
126  TagDecl* TD = dyn_cast<TagDecl>(*Begin);
127  if (TD)
128    ++Begin;
129
130  PrintingPolicy SubPolicy(Policy);
131  if (TD && TD->isDefinition()) {
132    TD->print(Out, Policy, Indentation);
133    Out << " ";
134    SubPolicy.SuppressTag = true;
135  }
136
137  bool isFirst = true;
138  for ( ; Begin != End; ++Begin) {
139    if (isFirst) {
140      SubPolicy.SuppressSpecifiers = false;
141      isFirst = false;
142    } else {
143      if (!isFirst) Out << ", ";
144      SubPolicy.SuppressSpecifiers = true;
145    }
146
147    (*Begin)->print(Out, SubPolicy, Indentation);
148  }
149}
150
151void Decl::dump() const {
152  print(llvm::errs());
153}
154
155llvm::raw_ostream& DeclPrinter::Indent(unsigned Indentation) {
156  for (unsigned i = 0; i != Indentation; ++i)
157    Out << "  ";
158  return Out;
159}
160
161void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) {
162  this->Indent();
163  Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
164  Out << ";\n";
165  Decls.clear();
166
167}
168
169void DeclPrinter::Print(AccessSpecifier AS) {
170  switch(AS) {
171  case AS_none:      assert(0 && "No access specifier!"); break;
172  case AS_public:    Out << "public"; break;
173  case AS_protected: Out << "protected"; break;
174  case AS_private:   Out << " private"; break;
175  }
176}
177
178//----------------------------------------------------------------------------
179// Common C declarations
180//----------------------------------------------------------------------------
181
182void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
183  if (Indent)
184    Indentation += Policy.Indentation;
185
186  bool PrintAccess = isa<CXXRecordDecl>(DC);
187  AccessSpecifier CurAS = AS_none;
188
189  llvm::SmallVector<Decl*, 2> Decls;
190  for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
191       D != DEnd; ++D) {
192    if (!Policy.Dump) {
193      // Skip over implicit declarations in pretty-printing mode.
194      if (D->isImplicit()) continue;
195      // FIXME: Ugly hack so we don't pretty-print the builtin declaration
196      // of __builtin_va_list.  There should be some other way to check that.
197      if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() ==
198          "__builtin_va_list")
199        continue;
200    }
201
202    if (PrintAccess) {
203      AccessSpecifier AS = D->getAccess();
204
205      if (AS != CurAS) {
206        if (Indent)
207          this->Indent(Indentation - Policy.Indentation);
208        Print(AS);
209        Out << ":\n";
210        CurAS = AS;
211      }
212    }
213
214    // The next bits of code handles stuff like "struct {int x;} a,b"; we're
215    // forced to merge the declarations because there's no other way to
216    // refer to the struct in question.  This limited merging is safe without
217    // a bunch of other checks because it only merges declarations directly
218    // referring to the tag, not typedefs.
219    //
220    // Check whether the current declaration should be grouped with a previous
221    // unnamed struct.
222    QualType CurDeclType = getDeclType(*D);
223    if (!Decls.empty() && !CurDeclType.isNull()) {
224      QualType BaseType = GetBaseType(CurDeclType);
225      if (!BaseType.isNull() && isa<TagType>(BaseType) &&
226          cast<TagType>(BaseType)->getDecl() == Decls[0]) {
227        Decls.push_back(*D);
228        continue;
229      }
230    }
231
232    // If we have a merged group waiting to be handled, handle it now.
233    if (!Decls.empty())
234      ProcessDeclGroup(Decls);
235
236    // If the current declaration is an unnamed tag type, save it
237    // so we can merge it with the subsequent declaration(s) using it.
238    if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
239      Decls.push_back(*D);
240      continue;
241    }
242    this->Indent();
243    Visit(*D);
244
245    // FIXME: Need to be able to tell the DeclPrinter when
246    const char *Terminator = 0;
247    if (isa<FunctionDecl>(*D) &&
248        cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
249      Terminator = 0;
250    else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
251      Terminator = 0;
252    else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
253             isa<ObjCImplementationDecl>(*D) ||
254             isa<ObjCInterfaceDecl>(*D) ||
255             isa<ObjCProtocolDecl>(*D) ||
256             isa<ObjCCategoryImplDecl>(*D) ||
257             isa<ObjCCategoryDecl>(*D))
258      Terminator = 0;
259    else if (isa<EnumConstantDecl>(*D)) {
260      DeclContext::decl_iterator Next = D;
261      ++Next;
262      if (Next != DEnd)
263        Terminator = ",";
264    } else
265      Terminator = ";";
266
267    if (Terminator)
268      Out << Terminator;
269    Out << "\n";
270  }
271
272  if (!Decls.empty())
273    ProcessDeclGroup(Decls);
274
275  if (Indent)
276    Indentation -= Policy.Indentation;
277}
278
279void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
280  VisitDeclContext(D, false);
281}
282
283void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
284  std::string S = D->getNameAsString();
285  D->getUnderlyingType().getAsStringInternal(S, Policy);
286  if (!Policy.SuppressSpecifiers)
287    Out << "typedef ";
288  Out << S;
289}
290
291void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
292  Out << "enum " << D->getNameAsString() << " {\n";
293  VisitDeclContext(D);
294  Indent() << "}";
295}
296
297void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
298  Out << D->getKindName();
299  if (D->getIdentifier()) {
300    Out << " ";
301    Out << D->getNameAsString();
302  }
303
304  if (D->isDefinition()) {
305    Out << " {\n";
306    VisitDeclContext(D);
307    Indent() << "}";
308  }
309}
310
311void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
312  Out << D->getNameAsString();
313  if (Expr *Init = D->getInitExpr()) {
314    Out << " = ";
315    Init->printPretty(Out, Context, 0, Policy, Indentation);
316  }
317}
318
319void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
320  if (!Policy.SuppressSpecifiers) {
321    switch (D->getStorageClass()) {
322    case FunctionDecl::None: break;
323    case FunctionDecl::Extern: Out << "extern "; break;
324    case FunctionDecl::Static: Out << "static "; break;
325    case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break;
326    }
327
328    if (D->isInlineSpecified())           Out << "inline ";
329    if (D->isVirtualAsWritten()) Out << "virtual ";
330  }
331
332  PrintingPolicy SubPolicy(Policy);
333  SubPolicy.SuppressSpecifiers = false;
334  std::string Proto = D->getNameAsString();
335  if (isa<FunctionType>(D->getType().getTypePtr())) {
336    const FunctionType *AFT = D->getType()->getAs<FunctionType>();
337
338    const FunctionProtoType *FT = 0;
339    if (D->hasWrittenPrototype())
340      FT = dyn_cast<FunctionProtoType>(AFT);
341
342    Proto += "(";
343    if (FT) {
344      llvm::raw_string_ostream POut(Proto);
345      DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation);
346      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
347        if (i) POut << ", ";
348        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
349      }
350
351      if (FT->isVariadic()) {
352        if (D->getNumParams()) POut << ", ";
353        POut << "...";
354      }
355    } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) {
356      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
357        if (i)
358          Proto += ", ";
359        Proto += D->getParamDecl(i)->getNameAsString();
360      }
361    }
362
363    Proto += ")";
364
365    if (FT && FT->hasExceptionSpec()) {
366      Proto += " throw(";
367      if (FT->hasAnyExceptionSpec())
368        Proto += "...";
369      else
370        for (unsigned I = 0, N = FT->getNumExceptions(); I != N; ++I) {
371          if (I)
372            Proto += ", ";
373
374
375          std::string ExceptionType;
376          FT->getExceptionType(I).getAsStringInternal(ExceptionType, SubPolicy);
377          Proto += ExceptionType;
378        }
379      Proto += ")";
380    }
381
382    if (D->hasAttr<NoReturnAttr>())
383      Proto += " __attribute((noreturn))";
384    if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) {
385      if (CDecl->getNumBaseOrMemberInitializers() > 0) {
386        Proto += " : ";
387        Out << Proto;
388        Proto.clear();
389        for (CXXConstructorDecl::init_const_iterator B = CDecl->init_begin(),
390             E = CDecl->init_end();
391             B != E; ++B) {
392          CXXBaseOrMemberInitializer * BMInitializer = (*B);
393          if (B != CDecl->init_begin())
394            Out << ", ";
395          bool hasArguments = (BMInitializer->arg_begin() !=
396                               BMInitializer->arg_end());
397          if (BMInitializer->isMemberInitializer()) {
398            FieldDecl *FD = BMInitializer->getMember();
399            Out <<  FD->getNameAsString();
400          }
401          else // FIXME. skip dependent types for now.
402            if (const RecordType *RT =
403                BMInitializer->getBaseClass()->getAs<RecordType>()) {
404              const CXXRecordDecl *BaseDecl =
405                cast<CXXRecordDecl>(RT->getDecl());
406              Out << BaseDecl->getNameAsString();
407          }
408          if (hasArguments) {
409            Out << "(";
410            for (CXXBaseOrMemberInitializer::const_arg_iterator BE =
411                 BMInitializer->const_arg_begin(),
412                 EE =  BMInitializer->const_arg_end(); BE != EE; ++BE) {
413              if (BE != BMInitializer->const_arg_begin())
414                Out<< ", ";
415              const Expr *Exp = (*BE);
416              Exp->printPretty(Out, Context, 0, Policy, Indentation);
417            }
418            Out << ")";
419          } else
420            Out << "()";
421        }
422      }
423    }
424    else
425      AFT->getResultType().getAsStringInternal(Proto, Policy);
426  } else {
427    D->getType().getAsStringInternal(Proto, Policy);
428  }
429
430  Out << Proto;
431
432  if (D->isPure())
433    Out << " = 0";
434  else if (D->isDeleted())
435    Out << " = delete";
436  else if (D->isThisDeclarationADefinition()) {
437    if (!D->hasPrototype() && D->getNumParams()) {
438      // This is a K&R function definition, so we need to print the
439      // parameters.
440      Out << '\n';
441      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
442      Indentation += Policy.Indentation;
443      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
444        Indent();
445        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
446        Out << ";\n";
447      }
448      Indentation -= Policy.Indentation;
449    } else
450      Out << ' ';
451
452    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
453    Out << '\n';
454  }
455}
456
457void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
458  if (!Policy.SuppressSpecifiers && D->isMutable())
459    Out << "mutable ";
460
461  std::string Name = D->getNameAsString();
462  D->getType().getAsStringInternal(Name, Policy);
463  Out << Name;
464
465  if (D->isBitField()) {
466    Out << " : ";
467    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
468  }
469}
470
471void DeclPrinter::VisitVarDecl(VarDecl *D) {
472  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
473    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
474
475  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
476    Out << "__thread ";
477
478  std::string Name = D->getNameAsString();
479  QualType T = D->getType();
480  if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D))
481    T = Parm->getOriginalType();
482  T.getAsStringInternal(Name, Policy);
483  Out << Name;
484  if (D->getInit()) {
485    if (D->hasCXXDirectInitializer())
486      Out << "(";
487    else
488      Out << " = ";
489    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
490    if (D->hasCXXDirectInitializer())
491      Out << ")";
492  }
493}
494
495void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
496  VisitVarDecl(D);
497}
498
499void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
500  Out << "__asm (";
501  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
502  Out << ")";
503}
504
505//----------------------------------------------------------------------------
506// C++ declarations
507//----------------------------------------------------------------------------
508void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
509  Out << "namespace " << D->getNameAsString() << " {\n";
510  VisitDeclContext(D);
511  Indent() << "}";
512}
513
514void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
515  Out << "using namespace ";
516  if (D->getQualifier())
517    D->getQualifier()->print(Out, Policy);
518  Out << D->getNominatedNamespaceAsWritten()->getNameAsString();
519}
520
521void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
522  Out << "namespace " << D->getNameAsString() << " = ";
523  if (D->getQualifier())
524    D->getQualifier()->print(Out, Policy);
525  Out << D->getAliasedNamespace()->getNameAsString();
526}
527
528void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
529  Out << D->getKindName();
530  if (D->getIdentifier()) {
531    Out << " ";
532    Out << D->getNameAsString();
533  }
534
535  if (D->isDefinition()) {
536    // Print the base classes
537    if (D->getNumBases()) {
538      Out << " : ";
539      for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
540             BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
541        if (Base != D->bases_begin())
542          Out << ", ";
543
544        if (Base->isVirtual())
545          Out << "virtual ";
546
547        AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
548        if (AS != AS_none)
549          Print(AS);
550        Out << " " << Base->getType().getAsString(Policy);
551      }
552    }
553
554    // Print the class definition
555    // FIXME: Doesn't print access specifiers, e.g., "public:"
556    Out << " {\n";
557    VisitDeclContext(D);
558    Indent() << "}";
559  }
560}
561
562void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
563  const char *l;
564  if (D->getLanguage() == LinkageSpecDecl::lang_c)
565    l = "C";
566  else {
567    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
568           "unknown language in linkage specification");
569    l = "C++";
570  }
571
572  Out << "extern \"" << l << "\" ";
573  if (D->hasBraces()) {
574    Out << "{\n";
575    VisitDeclContext(D);
576    Indent() << "}";
577  } else
578    Visit(*D->decls_begin());
579}
580
581void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
582  Out << "template <";
583
584  TemplateParameterList *Params = D->getTemplateParameters();
585  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
586    if (i != 0)
587      Out << ", ";
588
589    const Decl *Param = Params->getParam(i);
590    if (const TemplateTypeParmDecl *TTP =
591          dyn_cast<TemplateTypeParmDecl>(Param)) {
592
593      QualType ParamType =
594        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
595
596      if (TTP->wasDeclaredWithTypename())
597        Out << "typename ";
598      else
599        Out << "class ";
600
601      if (TTP->isParameterPack())
602        Out << "... ";
603
604      Out << ParamType.getAsString(Policy);
605
606      if (TTP->hasDefaultArgument()) {
607        Out << " = ";
608        Out << TTP->getDefaultArgument().getAsString(Policy);
609      };
610    } else if (const NonTypeTemplateParmDecl *NTTP =
611                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
612      Out << NTTP->getType().getAsString(Policy);
613
614      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
615        Out << ' ';
616        Out << Name->getName();
617      }
618
619      if (NTTP->hasDefaultArgument()) {
620        Out << " = ";
621        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
622                                                Indentation);
623      }
624    }
625  }
626
627  Out << "> ";
628
629  Visit(D->getTemplatedDecl());
630}
631
632//----------------------------------------------------------------------------
633// Objective-C declarations
634//----------------------------------------------------------------------------
635
636void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
637  Out << "@class ";
638  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
639       I != E; ++I) {
640    if (I != D->begin()) Out << ", ";
641    Out << I->getInterface()->getNameAsString();
642  }
643}
644
645void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
646  if (OMD->isInstanceMethod())
647    Out << "- ";
648  else
649    Out << "+ ";
650  if (!OMD->getResultType().isNull())
651    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
652
653  std::string name = OMD->getSelector().getAsString();
654  std::string::size_type pos, lastPos = 0;
655  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
656       E = OMD->param_end(); PI != E; ++PI) {
657    // FIXME: selector is missing here!
658    pos = name.find_first_of(":", lastPos);
659    Out << " " << name.substr(lastPos, pos - lastPos);
660    Out << ":(" << (*PI)->getType().getAsString(Policy) << ")"
661        << (*PI)->getNameAsString();
662    lastPos = pos + 1;
663  }
664
665  if (OMD->param_begin() == OMD->param_end())
666    Out << " " << name;
667
668  if (OMD->isVariadic())
669      Out << ", ...";
670
671  if (OMD->getBody()) {
672    Out << ' ';
673    OMD->getBody()->printPretty(Out, Context, 0, Policy);
674    Out << '\n';
675  }
676}
677
678void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
679  std::string I = OID->getNameAsString();
680  ObjCInterfaceDecl *SID = OID->getSuperClass();
681
682  if (SID)
683    Out << "@implementation " << I << " : " << SID->getNameAsString();
684  else
685    Out << "@implementation " << I;
686  Out << "\n";
687  VisitDeclContext(OID, false);
688  Out << "@end";
689}
690
691void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
692  std::string I = OID->getNameAsString();
693  ObjCInterfaceDecl *SID = OID->getSuperClass();
694
695  if (SID)
696    Out << "@interface " << I << " : " << SID->getNameAsString();
697  else
698    Out << "@interface " << I;
699
700  // Protocols?
701  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
702  if (!Protocols.empty()) {
703    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
704         E = Protocols.end(); I != E; ++I)
705      Out << (I == Protocols.begin() ? '<' : ',') << (*I)->getNameAsString();
706  }
707
708  if (!Protocols.empty())
709    Out << "> ";
710
711  if (OID->ivar_size() > 0) {
712    Out << "{\n";
713    Indentation += Policy.Indentation;
714    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
715         E = OID->ivar_end(); I != E; ++I) {
716      Indent() << (*I)->getType().getAsString(Policy)
717          << ' '  << (*I)->getNameAsString() << ";\n";
718    }
719    Indentation -= Policy.Indentation;
720    Out << "}\n";
721  }
722
723  VisitDeclContext(OID, false);
724  Out << "@end";
725  // FIXME: implement the rest...
726}
727
728void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
729  Out << "@protocol ";
730  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
731         E = D->protocol_end();
732       I != E; ++I) {
733    if (I != D->protocol_begin()) Out << ", ";
734    Out << (*I)->getNameAsString();
735  }
736}
737
738void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
739  Out << "@protocol " << PID->getNameAsString() << '\n';
740  VisitDeclContext(PID, false);
741  Out << "@end";
742}
743
744void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
745  Out << "@implementation "
746      << PID->getClassInterface()->getNameAsString()
747      << '(' << PID->getNameAsString() << ")\n";
748
749  VisitDeclContext(PID, false);
750  Out << "@end";
751  // FIXME: implement the rest...
752}
753
754void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
755  Out << "@interface "
756      << PID->getClassInterface()->getNameAsString()
757      << '(' << PID->getNameAsString() << ")\n";
758  VisitDeclContext(PID, false);
759  Out << "@end";
760
761  // FIXME: implement the rest...
762}
763
764void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
765  Out << "@compatibility_alias " << AID->getNameAsString()
766      << ' ' << AID->getClassInterface()->getNameAsString() << ";\n";
767}
768
769/// PrintObjCPropertyDecl - print a property declaration.
770///
771void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
772  if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
773    Out << "@required\n";
774  else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
775    Out << "@optional\n";
776
777  Out << "@property";
778  if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
779    bool first = true;
780    Out << " (";
781    if (PDecl->getPropertyAttributes() &
782        ObjCPropertyDecl::OBJC_PR_readonly) {
783      Out << (first ? ' ' : ',') << "readonly";
784      first = false;
785  }
786
787  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
788    Out << (first ? ' ' : ',') << "getter = "
789        << PDecl->getGetterName().getAsString();
790    first = false;
791  }
792  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
793    Out << (first ? ' ' : ',') << "setter = "
794        << PDecl->getSetterName().getAsString();
795    first = false;
796  }
797
798  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
799    Out << (first ? ' ' : ',') << "assign";
800    first = false;
801  }
802
803  if (PDecl->getPropertyAttributes() &
804      ObjCPropertyDecl::OBJC_PR_readwrite) {
805    Out << (first ? ' ' : ',') << "readwrite";
806    first = false;
807  }
808
809  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
810    Out << (first ? ' ' : ',') << "retain";
811    first = false;
812  }
813
814  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
815    Out << (first ? ' ' : ',') << "copy";
816    first = false;
817  }
818
819  if (PDecl->getPropertyAttributes() &
820      ObjCPropertyDecl::OBJC_PR_nonatomic) {
821    Out << (first ? ' ' : ',') << "nonatomic";
822    first = false;
823  }
824  Out << " )";
825  }
826  Out << ' ' << PDecl->getType().getAsString(Policy)
827  << ' ' << PDecl->getNameAsString();
828}
829
830void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
831  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
832    Out << "@synthesize ";
833  else
834    Out << "@dynamic ";
835  Out << PID->getPropertyDecl()->getNameAsString();
836  if (PID->getPropertyIvarDecl())
837    Out << "=" << PID->getPropertyIvarDecl()->getNameAsString();
838}
839
840void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
841  Out << "using ";
842  D->getTargetNestedNameDecl()->print(Out, Policy);
843  Out << D->getNameAsString();
844}
845
846void
847DeclPrinter::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) {
848  Out << "using typename ";
849  D->getTargetNestedNameSpecifier()->print(Out, Policy);
850  Out << D->getDeclName().getAsString();
851}
852
853void DeclPrinter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
854  Out << "using ";
855  D->getTargetNestedNameSpecifier()->print(Out, Policy);
856  Out << D->getDeclName().getAsString();
857}
858
859void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) {
860  // ignore
861}
862