DeclPrinter.cpp revision 321c22f1c4271c3d9a3d4d3fc18847f948ab595b 
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 VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
56    void VisitOverloadedFunctionDecl(OverloadedFunctionDecl *D);
57    void VisitNamespaceDecl(NamespaceDecl *D);
58    void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
59    void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
60    void VisitCXXRecordDecl(CXXRecordDecl *D);
61    void VisitLinkageSpecDecl(LinkageSpecDecl *D);
62    void VisitTemplateDecl(TemplateDecl *D);
63    void VisitObjCMethodDecl(ObjCMethodDecl *D);
64    void VisitObjCClassDecl(ObjCClassDecl *D);
65    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
66    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
67    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
68    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
69    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
70    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
71    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
72    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
73    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
74    void VisitUnresolvedUsingDecl(UnresolvedUsingDecl *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 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->isInlineSpecified())           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
406      AFT->getResultType().getAsStringInternal(Proto, Policy);
407  } else {
408    D->getType().getAsStringInternal(Proto, Policy);
409  }
410
411  Out << Proto;
412
413  if (D->isPure())
414    Out << " = 0";
415  else if (D->isDeleted())
416    Out << " = delete";
417  else if (D->isThisDeclarationADefinition()) {
418    if (!D->hasPrototype() && D->getNumParams()) {
419      // This is a K&R function definition, so we need to print the
420      // parameters.
421      Out << '\n';
422      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
423      Indentation += Policy.Indentation;
424      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
425        Indent();
426        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
427        Out << ";\n";
428      }
429      Indentation -= Policy.Indentation;
430    } else
431      Out << ' ';
432
433    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
434    Out << '\n';
435  }
436}
437
438void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
439  if (!Policy.SuppressSpecifiers && D->isMutable())
440    Out << "mutable ";
441
442  std::string Name = D->getNameAsString();
443  D->getType().getAsStringInternal(Name, Policy);
444  Out << Name;
445
446  if (D->isBitField()) {
447    Out << " : ";
448    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
449  }
450}
451
452void DeclPrinter::VisitVarDecl(VarDecl *D) {
453  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
454    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
455
456  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
457    Out << "__thread ";
458
459  std::string Name = D->getNameAsString();
460  QualType T = D->getType();
461  if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D))
462    T = Parm->getOriginalType();
463  T.getAsStringInternal(Name, Policy);
464  Out << Name;
465  if (D->getInit()) {
466    if (D->hasCXXDirectInitializer())
467      Out << "(";
468    else
469      Out << " = ";
470    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
471    if (D->hasCXXDirectInitializer())
472      Out << ")";
473  }
474}
475
476void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
477  VisitVarDecl(D);
478}
479
480void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
481  Out << "__asm (";
482  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
483  Out << ")";
484}
485
486//----------------------------------------------------------------------------
487// C++ declarations
488//----------------------------------------------------------------------------
489void DeclPrinter::VisitOverloadedFunctionDecl(OverloadedFunctionDecl *D) {
490  assert(false &&
491         "OverloadedFunctionDecls aren't really decls and are never printed");
492}
493
494void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
495  Out << "namespace " << D->getNameAsString() << " {\n";
496  VisitDeclContext(D);
497  Indent() << "}";
498}
499
500void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
501  Out << "using namespace ";
502  if (D->getQualifier())
503    D->getQualifier()->print(Out, Policy);
504  Out << D->getNominatedNamespace()->getNameAsString();
505}
506
507void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
508  Out << "namespace " << D->getNameAsString() << " = ";
509  if (D->getQualifier())
510    D->getQualifier()->print(Out, Policy);
511  Out << D->getAliasedNamespace()->getNameAsString();
512}
513
514void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
515  Out << D->getKindName();
516  if (D->getIdentifier()) {
517    Out << " ";
518    Out << D->getNameAsString();
519  }
520
521  if (D->isDefinition()) {
522    // Print the base classes
523    if (D->getNumBases()) {
524      Out << " : ";
525      for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
526             BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
527        if (Base != D->bases_begin())
528          Out << ", ";
529
530        if (Base->isVirtual())
531          Out << "virtual ";
532
533        AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
534        if (AS != AS_none)
535          Print(AS);
536        Out << " " << Base->getType().getAsString(Policy);
537      }
538    }
539
540    // Print the class definition
541    // FIXME: Doesn't print access specifiers, e.g., "public:"
542    Out << " {\n";
543    VisitDeclContext(D);
544    Indent() << "}";
545  }
546}
547
548void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
549  const char *l;
550  if (D->getLanguage() == LinkageSpecDecl::lang_c)
551    l = "C";
552  else {
553    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
554           "unknown language in linkage specification");
555    l = "C++";
556  }
557
558  Out << "extern \"" << l << "\" ";
559  if (D->hasBraces()) {
560    Out << "{\n";
561    VisitDeclContext(D);
562    Indent() << "}";
563  } else
564    Visit(*D->decls_begin());
565}
566
567void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
568  Out << "template <";
569
570  TemplateParameterList *Params = D->getTemplateParameters();
571  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
572    if (i != 0)
573      Out << ", ";
574
575    const Decl *Param = Params->getParam(i);
576    if (const TemplateTypeParmDecl *TTP =
577          dyn_cast<TemplateTypeParmDecl>(Param)) {
578
579      QualType ParamType =
580        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
581
582      if (TTP->wasDeclaredWithTypename())
583        Out << "typename ";
584      else
585        Out << "class ";
586
587      if (TTP->isParameterPack())
588        Out << "... ";
589
590      Out << ParamType.getAsString(Policy);
591
592      if (TTP->hasDefaultArgument()) {
593        Out << " = ";
594        Out << TTP->getDefaultArgument().getAsString(Policy);
595      };
596    } else if (const NonTypeTemplateParmDecl *NTTP =
597                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
598      Out << NTTP->getType().getAsString(Policy);
599
600      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
601        Out << ' ';
602        Out << Name->getName();
603      }
604
605      if (NTTP->hasDefaultArgument()) {
606        Out << " = ";
607        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
608                                                Indentation);
609      }
610    }
611  }
612
613  Out << "> ";
614
615  Visit(D->getTemplatedDecl());
616}
617
618//----------------------------------------------------------------------------
619// Objective-C declarations
620//----------------------------------------------------------------------------
621
622void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
623  Out << "@class ";
624  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
625       I != E; ++I) {
626    if (I != D->begin()) Out << ", ";
627    Out << I->getInterface()->getNameAsString();
628  }
629}
630
631void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
632  if (OMD->isInstanceMethod())
633    Out << "- ";
634  else
635    Out << "+ ";
636  if (!OMD->getResultType().isNull())
637    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
638
639  std::string name = OMD->getSelector().getAsString();
640  std::string::size_type pos, lastPos = 0;
641  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
642       E = OMD->param_end(); PI != E; ++PI) {
643    // FIXME: selector is missing here!
644    pos = name.find_first_of(":", lastPos);
645    Out << " " << name.substr(lastPos, pos - lastPos);
646    Out << ":(" << (*PI)->getType().getAsString(Policy) << ")"
647        << (*PI)->getNameAsString();
648    lastPos = pos + 1;
649  }
650
651  if (OMD->param_begin() == OMD->param_end())
652    Out << " " << name;
653
654  if (OMD->isVariadic())
655      Out << ", ...";
656
657  if (OMD->getBody()) {
658    Out << ' ';
659    OMD->getBody()->printPretty(Out, Context, 0, Policy);
660    Out << '\n';
661  }
662}
663
664void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
665  std::string I = OID->getNameAsString();
666  ObjCInterfaceDecl *SID = OID->getSuperClass();
667
668  if (SID)
669    Out << "@implementation " << I << " : " << SID->getNameAsString();
670  else
671    Out << "@implementation " << I;
672  Out << "\n";
673  VisitDeclContext(OID, false);
674  Out << "@end";
675}
676
677void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
678  std::string I = OID->getNameAsString();
679  ObjCInterfaceDecl *SID = OID->getSuperClass();
680
681  if (SID)
682    Out << "@interface " << I << " : " << SID->getNameAsString();
683  else
684    Out << "@interface " << I;
685
686  // Protocols?
687  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
688  if (!Protocols.empty()) {
689    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
690         E = Protocols.end(); I != E; ++I)
691      Out << (I == Protocols.begin() ? '<' : ',') << (*I)->getNameAsString();
692  }
693
694  if (!Protocols.empty())
695    Out << "> ";
696
697  if (OID->ivar_size() > 0) {
698    Out << "{\n";
699    Indentation += Policy.Indentation;
700    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
701         E = OID->ivar_end(); I != E; ++I) {
702      Indent() << (*I)->getType().getAsString(Policy)
703          << ' '  << (*I)->getNameAsString() << ";\n";
704    }
705    Indentation -= Policy.Indentation;
706    Out << "}\n";
707  }
708
709  VisitDeclContext(OID, false);
710  Out << "@end";
711  // FIXME: implement the rest...
712}
713
714void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
715  Out << "@protocol ";
716  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
717         E = D->protocol_end();
718       I != E; ++I) {
719    if (I != D->protocol_begin()) Out << ", ";
720    Out << (*I)->getNameAsString();
721  }
722}
723
724void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
725  Out << "@protocol " << PID->getNameAsString() << '\n';
726  VisitDeclContext(PID, false);
727  Out << "@end";
728}
729
730void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
731  Out << "@implementation "
732      << PID->getClassInterface()->getNameAsString()
733      << '(' << PID->getNameAsString() << ")\n";
734
735  VisitDeclContext(PID, false);
736  Out << "@end";
737  // FIXME: implement the rest...
738}
739
740void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
741  Out << "@interface "
742      << PID->getClassInterface()->getNameAsString()
743      << '(' << PID->getNameAsString() << ")\n";
744  VisitDeclContext(PID, false);
745  Out << "@end";
746
747  // FIXME: implement the rest...
748}
749
750void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
751  Out << "@compatibility_alias " << AID->getNameAsString()
752      << ' ' << AID->getClassInterface()->getNameAsString() << ";\n";
753}
754
755/// PrintObjCPropertyDecl - print a property declaration.
756///
757void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
758  if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
759    Out << "@required\n";
760  else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
761    Out << "@optional\n";
762
763  Out << "@property";
764  if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
765    bool first = true;
766    Out << " (";
767    if (PDecl->getPropertyAttributes() &
768        ObjCPropertyDecl::OBJC_PR_readonly) {
769      Out << (first ? ' ' : ',') << "readonly";
770      first = false;
771  }
772
773  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
774    Out << (first ? ' ' : ',') << "getter = "
775        << PDecl->getGetterName().getAsString();
776    first = false;
777  }
778  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
779    Out << (first ? ' ' : ',') << "setter = "
780        << PDecl->getSetterName().getAsString();
781    first = false;
782  }
783
784  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
785    Out << (first ? ' ' : ',') << "assign";
786    first = false;
787  }
788
789  if (PDecl->getPropertyAttributes() &
790      ObjCPropertyDecl::OBJC_PR_readwrite) {
791    Out << (first ? ' ' : ',') << "readwrite";
792    first = false;
793  }
794
795  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
796    Out << (first ? ' ' : ',') << "retain";
797    first = false;
798  }
799
800  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
801    Out << (first ? ' ' : ',') << "copy";
802    first = false;
803  }
804
805  if (PDecl->getPropertyAttributes() &
806      ObjCPropertyDecl::OBJC_PR_nonatomic) {
807    Out << (first ? ' ' : ',') << "nonatomic";
808    first = false;
809  }
810  Out << " )";
811  }
812  Out << ' ' << PDecl->getType().getAsString(Policy)
813  << ' ' << PDecl->getNameAsString();
814}
815
816void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
817  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
818    Out << "@synthesize ";
819  else
820    Out << "@dynamic ";
821  Out << PID->getPropertyDecl()->getNameAsString();
822  if (PID->getPropertyIvarDecl())
823    Out << "=" << PID->getPropertyIvarDecl()->getNameAsString();
824}
825
826void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
827  Out << "using ";
828  D->getTargetNestedNameDecl()->print(Out, Policy);
829  Out << D->getNameAsString();
830}
831
832void DeclPrinter::VisitUnresolvedUsingDecl(UnresolvedUsingDecl *D) {
833  Out << "using ";
834  D->getTargetNestedNameSpecifier()->print(Out, Policy);
835  Out << D->getTargetName().getAsString();
836}
837
838void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) {
839  // ignore
840}
841