DeclPrinter.cpp revision 195341 
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/Streams.h"
23#include "llvm/Support/Format.h"
24#include "llvm/Support/raw_ostream.h"
25using namespace clang;
26
27namespace {
28  class VISIBILITY_HIDDEN DeclPrinter : public DeclVisitor<DeclPrinter> {
29    llvm::raw_ostream &Out;
30    ASTContext &Context;
31    PrintingPolicy Policy;
32    unsigned Indentation;
33
34    llvm::raw_ostream& Indent();
35    void ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls);
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 VisitOriginalParmVarDecl(OriginalParmVarDecl *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  };
75}
76
77void Decl::print(llvm::raw_ostream &Out, unsigned Indentation) {
78  print(Out, getASTContext().PrintingPolicy, Indentation);
79}
80
81void Decl::print(llvm::raw_ostream &Out, const PrintingPolicy &Policy,
82                 unsigned Indentation) {
83  DeclPrinter Printer(Out, getASTContext(), Policy, Indentation);
84  Printer.Visit(this);
85}
86
87static QualType GetBaseType(QualType T) {
88  // FIXME: This should be on the Type class!
89  QualType BaseType = T;
90  while (!BaseType->isSpecifierType()) {
91    if (isa<TypedefType>(BaseType))
92      break;
93    else if (const PointerType* PTy = BaseType->getAsPointerType())
94      BaseType = PTy->getPointeeType();
95    else if (const ArrayType* ATy = dyn_cast<ArrayType>(BaseType))
96      BaseType = ATy->getElementType();
97    else if (const FunctionType* FTy = BaseType->getAsFunctionType())
98      BaseType = FTy->getResultType();
99    else if (const VectorType *VTy = BaseType->getAsVectorType())
100      BaseType = VTy->getElementType();
101    else
102      assert(0 && "Unknown declarator!");
103  }
104  return BaseType;
105}
106
107static QualType getDeclType(Decl* D) {
108  if (TypedefDecl* TDD = dyn_cast<TypedefDecl>(D))
109    return TDD->getUnderlyingType();
110  if (ValueDecl* VD = dyn_cast<ValueDecl>(D))
111    return VD->getType();
112  return QualType();
113}
114
115void Decl::printGroup(Decl** Begin, unsigned NumDecls,
116                      llvm::raw_ostream &Out, const PrintingPolicy &Policy,
117                      unsigned Indentation) {
118  if (NumDecls == 1) {
119    (*Begin)->print(Out, Policy, Indentation);
120    return;
121  }
122
123  Decl** End = Begin + NumDecls;
124  TagDecl* TD = dyn_cast<TagDecl>(*Begin);
125  if (TD)
126    ++Begin;
127
128  PrintingPolicy SubPolicy(Policy);
129  if (TD && TD->isDefinition()) {
130    TD->print(Out, Policy, Indentation);
131    Out << " ";
132    SubPolicy.SuppressTag = true;
133  }
134
135  bool isFirst = true;
136  for ( ; Begin != End; ++Begin) {
137    if (isFirst) {
138      SubPolicy.SuppressSpecifiers = false;
139      isFirst = false;
140    } else {
141      if (!isFirst) Out << ", ";
142      SubPolicy.SuppressSpecifiers = true;
143    }
144
145    (*Begin)->print(Out, SubPolicy, Indentation);
146  }
147}
148
149void Decl::dump() {
150  print(llvm::errs());
151}
152
153llvm::raw_ostream& DeclPrinter::Indent() {
154  for (unsigned i = 0; i < Indentation; ++i)
155    Out << "  ";
156  return Out;
157}
158
159void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) {
160  this->Indent();
161  Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
162  Out << ";\n";
163  Decls.clear();
164
165}
166
167//----------------------------------------------------------------------------
168// Common C declarations
169//----------------------------------------------------------------------------
170
171void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
172  if (Indent)
173    Indentation += Policy.Indentation;
174
175  llvm::SmallVector<Decl*, 2> Decls;
176  for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
177       D != DEnd; ++D) {
178    if (!Policy.Dump) {
179      // Skip over implicit declarations in pretty-printing mode.
180      if (D->isImplicit()) continue;
181      // FIXME: Ugly hack so we don't pretty-print the builtin declaration
182      // of __builtin_va_list.  There should be some other way to check that.
183      if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() ==
184          "__builtin_va_list")
185        continue;
186    }
187
188    // The next bits of code handles stuff like "struct {int x;} a,b"; we're
189    // forced to merge the declarations because there's no other way to
190    // refer to the struct in question.  This limited merging is safe without
191    // a bunch of other checks because it only merges declarations directly
192    // referring to the tag, not typedefs.
193    //
194    // Check whether the current declaration should be grouped with a previous
195    // unnamed struct.
196    QualType CurDeclType = getDeclType(*D);
197    if (!Decls.empty() && !CurDeclType.isNull()) {
198      QualType BaseType = GetBaseType(CurDeclType);
199      if (!BaseType.isNull() && isa<TagType>(BaseType) &&
200          cast<TagType>(BaseType)->getDecl() == Decls[0]) {
201        Decls.push_back(*D);
202        continue;
203      }
204    }
205
206    // If we have a merged group waiting to be handled, handle it now.
207    if (!Decls.empty())
208      ProcessDeclGroup(Decls);
209
210    // If the current declaration is an unnamed tag type, save it
211    // so we can merge it with the subsequent declaration(s) using it.
212    if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
213      Decls.push_back(*D);
214      continue;
215    }
216    this->Indent();
217    Visit(*D);
218
219    // FIXME: Need to be able to tell the DeclPrinter when
220    const char *Terminator = 0;
221    if (isa<FunctionDecl>(*D) &&
222        cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
223      Terminator = 0;
224    else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
225      Terminator = 0;
226    else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
227             isa<ObjCImplementationDecl>(*D) ||
228             isa<ObjCInterfaceDecl>(*D) ||
229             isa<ObjCProtocolDecl>(*D) ||
230             isa<ObjCCategoryImplDecl>(*D) ||
231             isa<ObjCCategoryDecl>(*D))
232      Terminator = 0;
233    else if (isa<EnumConstantDecl>(*D)) {
234      DeclContext::decl_iterator Next = D;
235      ++Next;
236      if (Next != DEnd)
237        Terminator = ",";
238    } else
239      Terminator = ";";
240
241    if (Terminator)
242      Out << Terminator;
243    Out << "\n";
244  }
245
246  if (!Decls.empty())
247    ProcessDeclGroup(Decls);
248
249  if (Indent)
250    Indentation -= Policy.Indentation;
251}
252
253void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
254  VisitDeclContext(D, false);
255}
256
257void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
258  std::string S = D->getNameAsString();
259  D->getUnderlyingType().getAsStringInternal(S, Policy);
260  if (!Policy.SuppressSpecifiers)
261    Out << "typedef ";
262  Out << S;
263}
264
265void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
266  Out << "enum " << D->getNameAsString() << " {\n";
267  VisitDeclContext(D);
268  Indent() << "}";
269}
270
271void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
272  Out << D->getKindName();
273  if (D->getIdentifier()) {
274    Out << " ";
275    Out << D->getNameAsString();
276  }
277
278  if (D->isDefinition()) {
279    Out << " {\n";
280    VisitDeclContext(D);
281    Indent() << "}";
282  }
283}
284
285void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
286  Out << D->getNameAsString();
287  if (Expr *Init = D->getInitExpr()) {
288    Out << " = ";
289    Init->printPretty(Out, Context, 0, Policy, Indentation);
290  }
291}
292
293void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
294  if (!Policy.SuppressSpecifiers) {
295    switch (D->getStorageClass()) {
296    case FunctionDecl::None: break;
297    case FunctionDecl::Extern: Out << "extern "; break;
298    case FunctionDecl::Static: Out << "static "; break;
299    case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break;
300    }
301
302    if (D->isInline())           Out << "inline ";
303    if (D->isVirtualAsWritten()) Out << "virtual ";
304  }
305
306  PrintingPolicy SubPolicy(Policy);
307  SubPolicy.SuppressSpecifiers = false;
308  std::string Proto = D->getNameAsString();
309  if (isa<FunctionType>(D->getType().getTypePtr())) {
310    const FunctionType *AFT = D->getType()->getAsFunctionType();
311
312    const FunctionProtoType *FT = 0;
313    if (D->hasWrittenPrototype())
314      FT = dyn_cast<FunctionProtoType>(AFT);
315
316    Proto += "(";
317    if (FT) {
318      llvm::raw_string_ostream POut(Proto);
319      DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation);
320      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
321        if (i) POut << ", ";
322        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
323      }
324
325      if (FT->isVariadic()) {
326        if (D->getNumParams()) POut << ", ";
327        POut << "...";
328      }
329    } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) {
330      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
331        if (i)
332          Proto += ", ";
333        Proto += D->getParamDecl(i)->getNameAsString();
334      }
335    }
336
337    Proto += ")";
338    AFT->getResultType().getAsStringInternal(Proto, Policy);
339  } else {
340    D->getType().getAsStringInternal(Proto, Policy);
341  }
342
343  Out << Proto;
344
345  if (D->isPure())
346    Out << " = 0";
347  else if (D->isDeleted())
348    Out << " = delete";
349  else if (D->isThisDeclarationADefinition()) {
350    if (!D->hasPrototype() && D->getNumParams()) {
351      // This is a K&R function definition, so we need to print the
352      // parameters.
353      Out << '\n';
354      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
355      Indentation += Policy.Indentation;
356      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
357        Indent();
358        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
359        Out << ";\n";
360      }
361      Indentation -= Policy.Indentation;
362    } else
363      Out << ' ';
364
365    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
366    Out << '\n';
367  }
368}
369
370void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
371  if (!Policy.SuppressSpecifiers && D->isMutable())
372    Out << "mutable ";
373
374  std::string Name = D->getNameAsString();
375  D->getType().getAsStringInternal(Name, Policy);
376  Out << Name;
377
378  if (D->isBitField()) {
379    Out << " : ";
380    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
381  }
382}
383
384void DeclPrinter::VisitVarDecl(VarDecl *D) {
385  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
386    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
387
388  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
389    Out << "__thread ";
390
391  std::string Name = D->getNameAsString();
392  QualType T = D->getType();
393  if (OriginalParmVarDecl *Parm = dyn_cast<OriginalParmVarDecl>(D))
394    T = Parm->getOriginalType();
395  T.getAsStringInternal(Name, Policy);
396  Out << Name;
397  if (D->getInit()) {
398    if (D->hasCXXDirectInitializer())
399      Out << "(";
400    else
401      Out << " = ";
402    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
403    if (D->hasCXXDirectInitializer())
404      Out << ")";
405  }
406}
407
408void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
409  VisitVarDecl(D);
410}
411
412void DeclPrinter::VisitOriginalParmVarDecl(OriginalParmVarDecl *D) {
413  VisitVarDecl(D);
414}
415
416void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
417  Out << "__asm (";
418  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
419  Out << ")";
420}
421
422//----------------------------------------------------------------------------
423// C++ declarations
424//----------------------------------------------------------------------------
425void DeclPrinter::VisitOverloadedFunctionDecl(OverloadedFunctionDecl *D) {
426  assert(false &&
427         "OverloadedFunctionDecls aren't really decls and are never printed");
428}
429
430void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
431  Out << "namespace " << D->getNameAsString() << " {\n";
432  VisitDeclContext(D);
433  Indent() << "}";
434}
435
436void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
437  Out << "using namespace ";
438  if (D->getQualifier())
439    D->getQualifier()->print(Out, Policy);
440  Out << D->getNominatedNamespace()->getNameAsString();
441}
442
443void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
444  Out << "namespace " << D->getNameAsString() << " = ";
445  if (D->getQualifier())
446    D->getQualifier()->print(Out, Policy);
447  Out << D->getAliasedNamespace()->getNameAsString();
448}
449
450void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
451  Out << D->getKindName();
452  if (D->getIdentifier()) {
453    Out << " ";
454    Out << D->getNameAsString();
455  }
456
457  if (D->isDefinition()) {
458    // Print the base classes
459    if (D->getNumBases()) {
460      Out << " : ";
461      for(CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
462                                          BaseEnd = D->bases_end();
463          Base != BaseEnd; ++Base) {
464        if (Base != D->bases_begin())
465          Out << ", ";
466
467        if (Base->isVirtual())
468          Out << "virtual ";
469
470        switch(Base->getAccessSpecifierAsWritten()) {
471        case AS_none:      break;
472        case AS_public:    Out << "public "; break;
473        case AS_protected: Out << "protected "; break;
474        case AS_private:   Out << " private "; break;
475        }
476
477        Out << Base->getType().getAsString(Policy);
478      }
479    }
480
481    // Print the class definition
482    // FIXME: Doesn't print access specifiers, e.g., "public:"
483    Out << " {\n";
484    VisitDeclContext(D);
485    Indent() << "}";
486  }
487}
488
489void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
490  const char *l;
491  if (D->getLanguage() == LinkageSpecDecl::lang_c)
492    l = "C";
493  else {
494    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
495           "unknown language in linkage specification");
496    l = "C++";
497  }
498
499  Out << "extern \"" << l << "\" ";
500  if (D->hasBraces()) {
501    Out << "{\n";
502    VisitDeclContext(D);
503    Indent() << "}";
504  } else
505    Visit(*D->decls_begin());
506}
507
508void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
509  Out << "template <";
510
511  TemplateParameterList *Params = D->getTemplateParameters();
512  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
513    if (i != 0)
514      Out << ", ";
515
516    const Decl *Param = Params->getParam(i);
517    if (const TemplateTypeParmDecl *TTP =
518          dyn_cast<TemplateTypeParmDecl>(Param)) {
519
520      QualType ParamType =
521        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
522
523      if (TTP->wasDeclaredWithTypename())
524        Out << "typename ";
525      else
526        Out << "class ";
527
528      if (TTP->isParameterPack())
529        Out << "... ";
530
531      Out << ParamType.getAsString(Policy);
532
533      if (TTP->hasDefaultArgument()) {
534        Out << " = ";
535        Out << TTP->getDefaultArgument().getAsString(Policy);
536      };
537    } else if (const NonTypeTemplateParmDecl *NTTP =
538                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
539      Out << NTTP->getType().getAsString(Policy);
540
541      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
542        Out << ' ';
543        Out << Name->getName();
544      }
545
546      if (NTTP->hasDefaultArgument()) {
547        Out << " = ";
548        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
549                                                Indentation);
550      }
551    }
552  }
553
554  Out << "> ";
555
556  Visit(D->getTemplatedDecl());
557}
558
559//----------------------------------------------------------------------------
560// Objective-C declarations
561//----------------------------------------------------------------------------
562
563void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
564  Out << "@class ";
565  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
566       I != E; ++I) {
567    if (I != D->begin()) Out << ", ";
568    Out << (*I)->getNameAsString();
569  }
570}
571
572void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
573  if (OMD->isInstanceMethod())
574    Out << "- ";
575  else
576    Out << "+ ";
577  if (!OMD->getResultType().isNull())
578    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
579
580  std::string name = OMD->getSelector().getAsString();
581  std::string::size_type pos, lastPos = 0;
582  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
583       E = OMD->param_end(); PI != E; ++PI) {
584    // FIXME: selector is missing here!
585    pos = name.find_first_of(":", lastPos);
586    Out << " " << name.substr(lastPos, pos - lastPos);
587    Out << ":(" << (*PI)->getType().getAsString(Policy) << ")"
588        << (*PI)->getNameAsString();
589    lastPos = pos + 1;
590  }
591
592  if (OMD->param_begin() == OMD->param_end())
593    Out << " " << name;
594
595  if (OMD->isVariadic())
596      Out << ", ...";
597
598  if (OMD->getBody()) {
599    Out << ' ';
600    OMD->getBody()->printPretty(Out, Context, 0, Policy);
601    Out << '\n';
602  }
603}
604
605void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
606  std::string I = OID->getNameAsString();
607  ObjCInterfaceDecl *SID = OID->getSuperClass();
608
609  if (SID)
610    Out << "@implementation " << I << " : " << SID->getNameAsString();
611  else
612    Out << "@implementation " << I;
613  Out << "\n";
614  VisitDeclContext(OID, false);
615  Out << "@end";
616}
617
618void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
619  std::string I = OID->getNameAsString();
620  ObjCInterfaceDecl *SID = OID->getSuperClass();
621
622  if (SID)
623    Out << "@interface " << I << " : " << SID->getNameAsString();
624  else
625    Out << "@interface " << I;
626
627  // Protocols?
628  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
629  if (!Protocols.empty()) {
630    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
631         E = Protocols.end(); I != E; ++I)
632      Out << (I == Protocols.begin() ? '<' : ',') << (*I)->getNameAsString();
633  }
634
635  if (!Protocols.empty())
636    Out << "> ";
637
638  if (OID->ivar_size() > 0) {
639    Out << "{\n";
640    Indentation += Policy.Indentation;
641    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
642         E = OID->ivar_end(); I != E; ++I) {
643      Indent() << (*I)->getType().getAsString(Policy)
644          << ' '  << (*I)->getNameAsString() << ";\n";
645    }
646    Indentation -= Policy.Indentation;
647    Out << "}\n";
648  }
649
650  VisitDeclContext(OID, false);
651  Out << "@end";
652  // FIXME: implement the rest...
653}
654
655void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
656  Out << "@protocol ";
657  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
658         E = D->protocol_end();
659       I != E; ++I) {
660    if (I != D->protocol_begin()) Out << ", ";
661    Out << (*I)->getNameAsString();
662  }
663}
664
665void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
666  Out << "@protocol " << PID->getNameAsString() << '\n';
667  VisitDeclContext(PID, false);
668  Out << "@end";
669}
670
671void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
672  Out << "@implementation "
673      << PID->getClassInterface()->getNameAsString()
674      << '(' << PID->getNameAsString() << ")\n";
675
676  VisitDeclContext(PID, false);
677  Out << "@end";
678  // FIXME: implement the rest...
679}
680
681void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
682  Out << "@interface "
683      << PID->getClassInterface()->getNameAsString()
684      << '(' << PID->getNameAsString() << ")\n";
685  VisitDeclContext(PID, false);
686  Out << "@end";
687
688  // FIXME: implement the rest...
689}
690
691void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
692  Out << "@compatibility_alias " << AID->getNameAsString()
693      << ' ' << AID->getClassInterface()->getNameAsString() << ";\n";
694}
695
696/// PrintObjCPropertyDecl - print a property declaration.
697///
698void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
699  if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
700    Out << "@required\n";
701  else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
702    Out << "@optional\n";
703
704  Out << "@property";
705  if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
706    bool first = true;
707    Out << " (";
708    if (PDecl->getPropertyAttributes() &
709        ObjCPropertyDecl::OBJC_PR_readonly) {
710      Out << (first ? ' ' : ',') << "readonly";
711      first = false;
712  }
713
714  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
715    Out << (first ? ' ' : ',') << "getter = "
716        << PDecl->getGetterName().getAsString();
717    first = false;
718  }
719  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
720    Out << (first ? ' ' : ',') << "setter = "
721        << PDecl->getSetterName().getAsString();
722    first = false;
723  }
724
725  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
726    Out << (first ? ' ' : ',') << "assign";
727    first = false;
728  }
729
730  if (PDecl->getPropertyAttributes() &
731      ObjCPropertyDecl::OBJC_PR_readwrite) {
732    Out << (first ? ' ' : ',') << "readwrite";
733    first = false;
734  }
735
736  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
737    Out << (first ? ' ' : ',') << "retain";
738    first = false;
739  }
740
741  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
742    Out << (first ? ' ' : ',') << "copy";
743    first = false;
744  }
745
746  if (PDecl->getPropertyAttributes() &
747      ObjCPropertyDecl::OBJC_PR_nonatomic) {
748    Out << (first ? ' ' : ',') << "nonatomic";
749    first = false;
750  }
751  Out << " )";
752  }
753  Out << ' ' << PDecl->getType().getAsString(Policy)
754  << ' ' << PDecl->getNameAsString();
755}
756
757void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
758  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
759    Out << "@synthesize ";
760  else
761    Out << "@dynamic ";
762  Out << PID->getPropertyDecl()->getNameAsString();
763  if (PID->getPropertyIvarDecl())
764    Out << "=" << PID->getPropertyIvarDecl()->getNameAsString();
765}
766