DeclPrinter.cpp revision 512ce60311b93b6f9a144fb2cf9fe4225f5d57b2 
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() { return Indent(Indentation); }
34    llvm::raw_ostream& Indent(unsigned Indentation);
35    void ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls);
36
37    void Print(AccessSpecifier AS);
38
39  public:
40    DeclPrinter(llvm::raw_ostream &Out, ASTContext &Context,
41                const PrintingPolicy &Policy,
42                unsigned Indentation = 0)
43      : Out(Out), Context(Context), Policy(Policy), Indentation(Indentation) { }
44
45    void VisitDeclContext(DeclContext *DC, bool Indent = true);
46
47    void VisitTranslationUnitDecl(TranslationUnitDecl *D);
48    void VisitTypedefDecl(TypedefDecl *D);
49    void VisitEnumDecl(EnumDecl *D);
50    void VisitRecordDecl(RecordDecl *D);
51    void VisitEnumConstantDecl(EnumConstantDecl *D);
52    void VisitFunctionDecl(FunctionDecl *D);
53    void VisitFieldDecl(FieldDecl *D);
54    void VisitVarDecl(VarDecl *D);
55    void VisitParmVarDecl(ParmVarDecl *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 VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
76    void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
77    void VisitUsingDecl(UsingDecl *D);
78    void VisitUsingShadowDecl(UsingShadowDecl *D);
79  };
80}
81
82void Decl::print(llvm::raw_ostream &Out, unsigned Indentation) const {
83  print(Out, getASTContext().PrintingPolicy, Indentation);
84}
85
86void Decl::print(llvm::raw_ostream &Out, const PrintingPolicy &Policy,
87                 unsigned Indentation) const {
88  DeclPrinter Printer(Out, getASTContext(), Policy, Indentation);
89  Printer.Visit(const_cast<Decl*>(this));
90}
91
92static QualType GetBaseType(QualType T) {
93  // FIXME: This should be on the Type class!
94  QualType BaseType = T;
95  while (!BaseType->isSpecifierType()) {
96    if (isa<TypedefType>(BaseType))
97      break;
98    else if (const PointerType* PTy = BaseType->getAs<PointerType>())
99      BaseType = PTy->getPointeeType();
100    else if (const ArrayType* ATy = dyn_cast<ArrayType>(BaseType))
101      BaseType = ATy->getElementType();
102    else if (const FunctionType* FTy = BaseType->getAs<FunctionType>())
103      BaseType = FTy->getResultType();
104    else if (const VectorType *VTy = BaseType->getAs<VectorType>())
105      BaseType = VTy->getElementType();
106    else
107      assert(0 && "Unknown declarator!");
108  }
109  return BaseType;
110}
111
112static QualType getDeclType(Decl* D) {
113  if (TypedefDecl* TDD = dyn_cast<TypedefDecl>(D))
114    return TDD->getUnderlyingType();
115  if (ValueDecl* VD = dyn_cast<ValueDecl>(D))
116    return VD->getType();
117  return QualType();
118}
119
120void Decl::printGroup(Decl** Begin, unsigned NumDecls,
121                      llvm::raw_ostream &Out, const PrintingPolicy &Policy,
122                      unsigned Indentation) {
123  if (NumDecls == 1) {
124    (*Begin)->print(Out, Policy, Indentation);
125    return;
126  }
127
128  Decl** End = Begin + NumDecls;
129  TagDecl* TD = dyn_cast<TagDecl>(*Begin);
130  if (TD)
131    ++Begin;
132
133  PrintingPolicy SubPolicy(Policy);
134  if (TD && TD->isDefinition()) {
135    TD->print(Out, Policy, Indentation);
136    Out << " ";
137    SubPolicy.SuppressTag = true;
138  }
139
140  bool isFirst = true;
141  for ( ; Begin != End; ++Begin) {
142    if (isFirst) {
143      SubPolicy.SuppressSpecifiers = false;
144      isFirst = false;
145    } else {
146      if (!isFirst) Out << ", ";
147      SubPolicy.SuppressSpecifiers = true;
148    }
149
150    (*Begin)->print(Out, SubPolicy, Indentation);
151  }
152}
153
154void Decl::dump() const {
155  print(llvm::errs());
156}
157
158llvm::raw_ostream& DeclPrinter::Indent(unsigned Indentation) {
159  for (unsigned i = 0; i != Indentation; ++i)
160    Out << "  ";
161  return Out;
162}
163
164void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) {
165  this->Indent();
166  Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
167  Out << ";\n";
168  Decls.clear();
169
170}
171
172void DeclPrinter::Print(AccessSpecifier AS) {
173  switch(AS) {
174  case AS_none:      assert(0 && "No access specifier!"); break;
175  case AS_public:    Out << "public"; break;
176  case AS_protected: Out << "protected"; break;
177  case AS_private:   Out << " private"; break;
178  }
179}
180
181//----------------------------------------------------------------------------
182// Common C declarations
183//----------------------------------------------------------------------------
184
185void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
186  if (Indent)
187    Indentation += Policy.Indentation;
188
189  bool PrintAccess = isa<CXXRecordDecl>(DC);
190  AccessSpecifier CurAS = AS_none;
191
192  llvm::SmallVector<Decl*, 2> Decls;
193  for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
194       D != DEnd; ++D) {
195    if (!Policy.Dump) {
196      // Skip over implicit declarations in pretty-printing mode.
197      if (D->isImplicit()) continue;
198      // FIXME: Ugly hack so we don't pretty-print the builtin declaration
199      // of __builtin_va_list.  There should be some other way to check that.
200      if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() ==
201          "__builtin_va_list")
202        continue;
203    }
204
205    if (PrintAccess) {
206      AccessSpecifier AS = D->getAccess();
207
208      if (AS != CurAS) {
209        if (Indent)
210          this->Indent(Indentation - Policy.Indentation);
211        Print(AS);
212        Out << ":\n";
213        CurAS = AS;
214      }
215    }
216
217    // The next bits of code handles stuff like "struct {int x;} a,b"; we're
218    // forced to merge the declarations because there's no other way to
219    // refer to the struct in question.  This limited merging is safe without
220    // a bunch of other checks because it only merges declarations directly
221    // referring to the tag, not typedefs.
222    //
223    // Check whether the current declaration should be grouped with a previous
224    // unnamed struct.
225    QualType CurDeclType = getDeclType(*D);
226    if (!Decls.empty() && !CurDeclType.isNull()) {
227      QualType BaseType = GetBaseType(CurDeclType);
228      if (!BaseType.isNull() && isa<TagType>(BaseType) &&
229          cast<TagType>(BaseType)->getDecl() == Decls[0]) {
230        Decls.push_back(*D);
231        continue;
232      }
233    }
234
235    // If we have a merged group waiting to be handled, handle it now.
236    if (!Decls.empty())
237      ProcessDeclGroup(Decls);
238
239    // If the current declaration is an unnamed tag type, save it
240    // so we can merge it with the subsequent declaration(s) using it.
241    if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
242      Decls.push_back(*D);
243      continue;
244    }
245    this->Indent();
246    Visit(*D);
247
248    // FIXME: Need to be able to tell the DeclPrinter when
249    const char *Terminator = 0;
250    if (isa<FunctionDecl>(*D) &&
251        cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
252      Terminator = 0;
253    else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
254      Terminator = 0;
255    else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
256             isa<ObjCImplementationDecl>(*D) ||
257             isa<ObjCInterfaceDecl>(*D) ||
258             isa<ObjCProtocolDecl>(*D) ||
259             isa<ObjCCategoryImplDecl>(*D) ||
260             isa<ObjCCategoryDecl>(*D))
261      Terminator = 0;
262    else if (isa<EnumConstantDecl>(*D)) {
263      DeclContext::decl_iterator Next = D;
264      ++Next;
265      if (Next != DEnd)
266        Terminator = ",";
267    } else
268      Terminator = ";";
269
270    if (Terminator)
271      Out << Terminator;
272    Out << "\n";
273  }
274
275  if (!Decls.empty())
276    ProcessDeclGroup(Decls);
277
278  if (Indent)
279    Indentation -= Policy.Indentation;
280}
281
282void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
283  VisitDeclContext(D, false);
284}
285
286void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
287  std::string S = D->getNameAsString();
288  D->getUnderlyingType().getAsStringInternal(S, Policy);
289  if (!Policy.SuppressSpecifiers)
290    Out << "typedef ";
291  Out << S;
292}
293
294void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
295  Out << "enum " << D->getNameAsString() << " {\n";
296  VisitDeclContext(D);
297  Indent() << "}";
298}
299
300void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
301  Out << D->getKindName();
302  if (D->getIdentifier()) {
303    Out << " ";
304    Out << D->getNameAsString();
305  }
306
307  if (D->isDefinition()) {
308    Out << " {\n";
309    VisitDeclContext(D);
310    Indent() << "}";
311  }
312}
313
314void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
315  Out << D->getNameAsString();
316  if (Expr *Init = D->getInitExpr()) {
317    Out << " = ";
318    Init->printPretty(Out, Context, 0, Policy, Indentation);
319  }
320}
321
322void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
323  if (!Policy.SuppressSpecifiers) {
324    switch (D->getStorageClass()) {
325    case FunctionDecl::None: break;
326    case FunctionDecl::Extern: Out << "extern "; break;
327    case FunctionDecl::Static: Out << "static "; break;
328    case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break;
329    }
330
331    if (D->isInlineSpecified())           Out << "inline ";
332    if (D->isVirtualAsWritten()) Out << "virtual ";
333  }
334
335  PrintingPolicy SubPolicy(Policy);
336  SubPolicy.SuppressSpecifiers = false;
337  std::string Proto = D->getNameAsString();
338  if (isa<FunctionType>(D->getType().getTypePtr())) {
339    const FunctionType *AFT = D->getType()->getAs<FunctionType>();
340
341    const FunctionProtoType *FT = 0;
342    if (D->hasWrittenPrototype())
343      FT = dyn_cast<FunctionProtoType>(AFT);
344
345    Proto += "(";
346    if (FT) {
347      llvm::raw_string_ostream POut(Proto);
348      DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation);
349      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
350        if (i) POut << ", ";
351        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
352      }
353
354      if (FT->isVariadic()) {
355        if (D->getNumParams()) POut << ", ";
356        POut << "...";
357      }
358    } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) {
359      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
360        if (i)
361          Proto += ", ";
362        Proto += D->getParamDecl(i)->getNameAsString();
363      }
364    }
365
366    Proto += ")";
367    if (D->hasAttr<NoReturnAttr>())
368      Proto += " __attribute((noreturn))";
369    if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) {
370      if (CDecl->getNumBaseOrMemberInitializers() > 0) {
371        Proto += " : ";
372        Out << Proto;
373        Proto.clear();
374        for (CXXConstructorDecl::init_const_iterator B = CDecl->init_begin(),
375             E = CDecl->init_end();
376             B != E; ++B) {
377          CXXBaseOrMemberInitializer * BMInitializer = (*B);
378          if (B != CDecl->init_begin())
379            Out << ", ";
380          bool hasArguments = (BMInitializer->arg_begin() !=
381                               BMInitializer->arg_end());
382          if (BMInitializer->isMemberInitializer()) {
383            FieldDecl *FD = BMInitializer->getMember();
384            Out <<  FD->getNameAsString();
385          }
386          else // FIXME. skip dependent types for now.
387            if (const RecordType *RT =
388                BMInitializer->getBaseClass()->getAs<RecordType>()) {
389              const CXXRecordDecl *BaseDecl =
390                cast<CXXRecordDecl>(RT->getDecl());
391              Out << BaseDecl->getNameAsString();
392          }
393          if (hasArguments) {
394            Out << "(";
395            for (CXXBaseOrMemberInitializer::const_arg_iterator BE =
396                 BMInitializer->const_arg_begin(),
397                 EE =  BMInitializer->const_arg_end(); BE != EE; ++BE) {
398              if (BE != BMInitializer->const_arg_begin())
399                Out<< ", ";
400              const Expr *Exp = (*BE);
401              Exp->printPretty(Out, Context, 0, Policy, Indentation);
402            }
403            Out << ")";
404          } else
405            Out << "()";
406        }
407      }
408    }
409    else
410      AFT->getResultType().getAsStringInternal(Proto, Policy);
411  } else {
412    D->getType().getAsStringInternal(Proto, Policy);
413  }
414
415  Out << Proto;
416
417  if (D->isPure())
418    Out << " = 0";
419  else if (D->isDeleted())
420    Out << " = delete";
421  else if (D->isThisDeclarationADefinition()) {
422    if (!D->hasPrototype() && D->getNumParams()) {
423      // This is a K&R function definition, so we need to print the
424      // parameters.
425      Out << '\n';
426      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
427      Indentation += Policy.Indentation;
428      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
429        Indent();
430        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
431        Out << ";\n";
432      }
433      Indentation -= Policy.Indentation;
434    } else
435      Out << ' ';
436
437    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
438    Out << '\n';
439  }
440}
441
442void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
443  if (!Policy.SuppressSpecifiers && D->isMutable())
444    Out << "mutable ";
445
446  std::string Name = D->getNameAsString();
447  D->getType().getAsStringInternal(Name, Policy);
448  Out << Name;
449
450  if (D->isBitField()) {
451    Out << " : ";
452    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
453  }
454}
455
456void DeclPrinter::VisitVarDecl(VarDecl *D) {
457  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
458    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
459
460  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
461    Out << "__thread ";
462
463  std::string Name = D->getNameAsString();
464  QualType T = D->getType();
465  if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D))
466    T = Parm->getOriginalType();
467  T.getAsStringInternal(Name, Policy);
468  Out << Name;
469  if (D->getInit()) {
470    if (D->hasCXXDirectInitializer())
471      Out << "(";
472    else
473      Out << " = ";
474    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
475    if (D->hasCXXDirectInitializer())
476      Out << ")";
477  }
478}
479
480void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
481  VisitVarDecl(D);
482}
483
484void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
485  Out << "__asm (";
486  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
487  Out << ")";
488}
489
490//----------------------------------------------------------------------------
491// C++ declarations
492//----------------------------------------------------------------------------
493void DeclPrinter::VisitOverloadedFunctionDecl(OverloadedFunctionDecl *D) {
494  assert(false &&
495         "OverloadedFunctionDecls aren't really decls and are never printed");
496}
497
498void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
499  Out << "namespace " << D->getNameAsString() << " {\n";
500  VisitDeclContext(D);
501  Indent() << "}";
502}
503
504void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
505  Out << "using namespace ";
506  if (D->getQualifier())
507    D->getQualifier()->print(Out, Policy);
508  Out << D->getNominatedNamespace()->getNameAsString();
509}
510
511void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
512  Out << "namespace " << D->getNameAsString() << " = ";
513  if (D->getQualifier())
514    D->getQualifier()->print(Out, Policy);
515  Out << D->getAliasedNamespace()->getNameAsString();
516}
517
518void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
519  Out << D->getKindName();
520  if (D->getIdentifier()) {
521    Out << " ";
522    Out << D->getNameAsString();
523  }
524
525  if (D->isDefinition()) {
526    // Print the base classes
527    if (D->getNumBases()) {
528      Out << " : ";
529      for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
530             BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
531        if (Base != D->bases_begin())
532          Out << ", ";
533
534        if (Base->isVirtual())
535          Out << "virtual ";
536
537        AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
538        if (AS != AS_none)
539          Print(AS);
540        Out << " " << Base->getType().getAsString(Policy);
541      }
542    }
543
544    // Print the class definition
545    // FIXME: Doesn't print access specifiers, e.g., "public:"
546    Out << " {\n";
547    VisitDeclContext(D);
548    Indent() << "}";
549  }
550}
551
552void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
553  const char *l;
554  if (D->getLanguage() == LinkageSpecDecl::lang_c)
555    l = "C";
556  else {
557    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
558           "unknown language in linkage specification");
559    l = "C++";
560  }
561
562  Out << "extern \"" << l << "\" ";
563  if (D->hasBraces()) {
564    Out << "{\n";
565    VisitDeclContext(D);
566    Indent() << "}";
567  } else
568    Visit(*D->decls_begin());
569}
570
571void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
572  Out << "template <";
573
574  TemplateParameterList *Params = D->getTemplateParameters();
575  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
576    if (i != 0)
577      Out << ", ";
578
579    const Decl *Param = Params->getParam(i);
580    if (const TemplateTypeParmDecl *TTP =
581          dyn_cast<TemplateTypeParmDecl>(Param)) {
582
583      QualType ParamType =
584        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
585
586      if (TTP->wasDeclaredWithTypename())
587        Out << "typename ";
588      else
589        Out << "class ";
590
591      if (TTP->isParameterPack())
592        Out << "... ";
593
594      Out << ParamType.getAsString(Policy);
595
596      if (TTP->hasDefaultArgument()) {
597        Out << " = ";
598        Out << TTP->getDefaultArgument().getAsString(Policy);
599      };
600    } else if (const NonTypeTemplateParmDecl *NTTP =
601                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
602      Out << NTTP->getType().getAsString(Policy);
603
604      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
605        Out << ' ';
606        Out << Name->getName();
607      }
608
609      if (NTTP->hasDefaultArgument()) {
610        Out << " = ";
611        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
612                                                Indentation);
613      }
614    }
615  }
616
617  Out << "> ";
618
619  Visit(D->getTemplatedDecl());
620}
621
622//----------------------------------------------------------------------------
623// Objective-C declarations
624//----------------------------------------------------------------------------
625
626void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
627  Out << "@class ";
628  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
629       I != E; ++I) {
630    if (I != D->begin()) Out << ", ";
631    Out << I->getInterface()->getNameAsString();
632  }
633}
634
635void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
636  if (OMD->isInstanceMethod())
637    Out << "- ";
638  else
639    Out << "+ ";
640  if (!OMD->getResultType().isNull())
641    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
642
643  std::string name = OMD->getSelector().getAsString();
644  std::string::size_type pos, lastPos = 0;
645  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
646       E = OMD->param_end(); PI != E; ++PI) {
647    // FIXME: selector is missing here!
648    pos = name.find_first_of(":", lastPos);
649    Out << " " << name.substr(lastPos, pos - lastPos);
650    Out << ":(" << (*PI)->getType().getAsString(Policy) << ")"
651        << (*PI)->getNameAsString();
652    lastPos = pos + 1;
653  }
654
655  if (OMD->param_begin() == OMD->param_end())
656    Out << " " << name;
657
658  if (OMD->isVariadic())
659      Out << ", ...";
660
661  if (OMD->getBody()) {
662    Out << ' ';
663    OMD->getBody()->printPretty(Out, Context, 0, Policy);
664    Out << '\n';
665  }
666}
667
668void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
669  std::string I = OID->getNameAsString();
670  ObjCInterfaceDecl *SID = OID->getSuperClass();
671
672  if (SID)
673    Out << "@implementation " << I << " : " << SID->getNameAsString();
674  else
675    Out << "@implementation " << I;
676  Out << "\n";
677  VisitDeclContext(OID, false);
678  Out << "@end";
679}
680
681void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
682  std::string I = OID->getNameAsString();
683  ObjCInterfaceDecl *SID = OID->getSuperClass();
684
685  if (SID)
686    Out << "@interface " << I << " : " << SID->getNameAsString();
687  else
688    Out << "@interface " << I;
689
690  // Protocols?
691  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
692  if (!Protocols.empty()) {
693    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
694         E = Protocols.end(); I != E; ++I)
695      Out << (I == Protocols.begin() ? '<' : ',') << (*I)->getNameAsString();
696  }
697
698  if (!Protocols.empty())
699    Out << "> ";
700
701  if (OID->ivar_size() > 0) {
702    Out << "{\n";
703    Indentation += Policy.Indentation;
704    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
705         E = OID->ivar_end(); I != E; ++I) {
706      Indent() << (*I)->getType().getAsString(Policy)
707          << ' '  << (*I)->getNameAsString() << ";\n";
708    }
709    Indentation -= Policy.Indentation;
710    Out << "}\n";
711  }
712
713  VisitDeclContext(OID, false);
714  Out << "@end";
715  // FIXME: implement the rest...
716}
717
718void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
719  Out << "@protocol ";
720  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
721         E = D->protocol_end();
722       I != E; ++I) {
723    if (I != D->protocol_begin()) Out << ", ";
724    Out << (*I)->getNameAsString();
725  }
726}
727
728void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
729  Out << "@protocol " << PID->getNameAsString() << '\n';
730  VisitDeclContext(PID, false);
731  Out << "@end";
732}
733
734void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
735  Out << "@implementation "
736      << PID->getClassInterface()->getNameAsString()
737      << '(' << PID->getNameAsString() << ")\n";
738
739  VisitDeclContext(PID, false);
740  Out << "@end";
741  // FIXME: implement the rest...
742}
743
744void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
745  Out << "@interface "
746      << PID->getClassInterface()->getNameAsString()
747      << '(' << PID->getNameAsString() << ")\n";
748  VisitDeclContext(PID, false);
749  Out << "@end";
750
751  // FIXME: implement the rest...
752}
753
754void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
755  Out << "@compatibility_alias " << AID->getNameAsString()
756      << ' ' << AID->getClassInterface()->getNameAsString() << ";\n";
757}
758
759/// PrintObjCPropertyDecl - print a property declaration.
760///
761void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
762  if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
763    Out << "@required\n";
764  else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
765    Out << "@optional\n";
766
767  Out << "@property";
768  if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
769    bool first = true;
770    Out << " (";
771    if (PDecl->getPropertyAttributes() &
772        ObjCPropertyDecl::OBJC_PR_readonly) {
773      Out << (first ? ' ' : ',') << "readonly";
774      first = false;
775  }
776
777  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
778    Out << (first ? ' ' : ',') << "getter = "
779        << PDecl->getGetterName().getAsString();
780    first = false;
781  }
782  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
783    Out << (first ? ' ' : ',') << "setter = "
784        << PDecl->getSetterName().getAsString();
785    first = false;
786  }
787
788  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
789    Out << (first ? ' ' : ',') << "assign";
790    first = false;
791  }
792
793  if (PDecl->getPropertyAttributes() &
794      ObjCPropertyDecl::OBJC_PR_readwrite) {
795    Out << (first ? ' ' : ',') << "readwrite";
796    first = false;
797  }
798
799  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
800    Out << (first ? ' ' : ',') << "retain";
801    first = false;
802  }
803
804  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
805    Out << (first ? ' ' : ',') << "copy";
806    first = false;
807  }
808
809  if (PDecl->getPropertyAttributes() &
810      ObjCPropertyDecl::OBJC_PR_nonatomic) {
811    Out << (first ? ' ' : ',') << "nonatomic";
812    first = false;
813  }
814  Out << " )";
815  }
816  Out << ' ' << PDecl->getType().getAsString(Policy)
817  << ' ' << PDecl->getNameAsString();
818}
819
820void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
821  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
822    Out << "@synthesize ";
823  else
824    Out << "@dynamic ";
825  Out << PID->getPropertyDecl()->getNameAsString();
826  if (PID->getPropertyIvarDecl())
827    Out << "=" << PID->getPropertyIvarDecl()->getNameAsString();
828}
829
830void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
831  Out << "using ";
832  D->getTargetNestedNameDecl()->print(Out, Policy);
833  Out << D->getNameAsString();
834}
835
836void
837DeclPrinter::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) {
838  Out << "using typename ";
839  D->getTargetNestedNameSpecifier()->print(Out, Policy);
840  Out << D->getDeclName().getAsString();
841}
842
843void DeclPrinter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
844  Out << "using ";
845  D->getTargetNestedNameSpecifier()->print(Out, Policy);
846  Out << D->getDeclName().getAsString();
847}
848
849void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) {
850  // ignore
851}
852