DeclPrinter.cpp revision b9805b6ffe18062027f2150f0b701d2873617fc5 
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/ExprCXX.h"
21#include "clang/AST/PrettyPrinter.h"
22#include "llvm/Support/raw_ostream.h"
23using namespace clang;
24
25namespace {
26  class DeclPrinter : public DeclVisitor<DeclPrinter> {
27    llvm::raw_ostream &Out;
28    ASTContext &Context;
29    PrintingPolicy Policy;
30    unsigned Indentation;
31
32    llvm::raw_ostream& Indent() { return Indent(Indentation); }
33    llvm::raw_ostream& Indent(unsigned Indentation);
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 VisitNamespaceDecl(NamespaceDecl *D);
57    void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
58    void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
59    void VisitCXXRecordDecl(CXXRecordDecl *D);
60    void VisitLinkageSpecDecl(LinkageSpecDecl *D);
61    void VisitTemplateDecl(TemplateDecl *D);
62    void VisitObjCMethodDecl(ObjCMethodDecl *D);
63    void VisitObjCClassDecl(ObjCClassDecl *D);
64    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
65    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
66    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
67    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
68    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
69    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
70    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
71    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
72    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
73    void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
74    void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *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 DeclContext::dumpDeclContext() const {
153  // Get the translation unit
154  const DeclContext *DC = this;
155  while (!DC->isTranslationUnit())
156    DC = DC->getParent();
157
158  ASTContext &Ctx = cast<TranslationUnitDecl>(DC)->getASTContext();
159  DeclPrinter Printer(llvm::errs(), Ctx, Ctx.PrintingPolicy, 0);
160  Printer.VisitDeclContext(const_cast<DeclContext *>(this), /*Indent=*/false);
161}
162
163void Decl::dump() const {
164  print(llvm::errs());
165}
166
167llvm::raw_ostream& DeclPrinter::Indent(unsigned Indentation) {
168  for (unsigned i = 0; i != Indentation; ++i)
169    Out << "  ";
170  return Out;
171}
172
173void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) {
174  this->Indent();
175  Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
176  Out << ";\n";
177  Decls.clear();
178
179}
180
181void DeclPrinter::Print(AccessSpecifier AS) {
182  switch(AS) {
183  case AS_none:      assert(0 && "No access specifier!"); break;
184  case AS_public:    Out << "public"; break;
185  case AS_protected: Out << "protected"; break;
186  case AS_private:   Out << "private"; break;
187  }
188}
189
190//----------------------------------------------------------------------------
191// Common C declarations
192//----------------------------------------------------------------------------
193
194void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
195  if (Indent)
196    Indentation += Policy.Indentation;
197
198  llvm::SmallVector<Decl*, 2> Decls;
199  for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
200       D != DEnd; ++D) {
201    if (!Policy.Dump) {
202      // Skip over implicit declarations in pretty-printing mode.
203      if (D->isImplicit()) continue;
204      // FIXME: Ugly hack so we don't pretty-print the builtin declaration
205      // of __builtin_va_list.  There should be some other way to check that.
206      if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() ==
207          "__builtin_va_list")
208        continue;
209    }
210
211    // The next bits of code handles stuff like "struct {int x;} a,b"; we're
212    // forced to merge the declarations because there's no other way to
213    // refer to the struct in question.  This limited merging is safe without
214    // a bunch of other checks because it only merges declarations directly
215    // referring to the tag, not typedefs.
216    //
217    // Check whether the current declaration should be grouped with a previous
218    // unnamed struct.
219    QualType CurDeclType = getDeclType(*D);
220    if (!Decls.empty() && !CurDeclType.isNull()) {
221      QualType BaseType = GetBaseType(CurDeclType);
222      if (!BaseType.isNull() && isa<TagType>(BaseType) &&
223          cast<TagType>(BaseType)->getDecl() == Decls[0]) {
224        Decls.push_back(*D);
225        continue;
226      }
227    }
228
229    // If we have a merged group waiting to be handled, handle it now.
230    if (!Decls.empty())
231      ProcessDeclGroup(Decls);
232
233    // If the current declaration is an unnamed tag type, save it
234    // so we can merge it with the subsequent declaration(s) using it.
235    if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
236      Decls.push_back(*D);
237      continue;
238    }
239
240    if (isa<AccessSpecDecl>(*D)) {
241      Indentation -= Policy.Indentation;
242      this->Indent();
243      Print(D->getAccess());
244      Out << ":\n";
245      Indentation += Policy.Indentation;
246      continue;
247    }
248
249    this->Indent();
250    Visit(*D);
251
252    // FIXME: Need to be able to tell the DeclPrinter when
253    const char *Terminator = 0;
254    if (isa<FunctionDecl>(*D) &&
255        cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
256      Terminator = 0;
257    else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
258      Terminator = 0;
259    else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
260             isa<ObjCImplementationDecl>(*D) ||
261             isa<ObjCInterfaceDecl>(*D) ||
262             isa<ObjCProtocolDecl>(*D) ||
263             isa<ObjCCategoryImplDecl>(*D) ||
264             isa<ObjCCategoryDecl>(*D))
265      Terminator = 0;
266    else if (isa<EnumConstantDecl>(*D)) {
267      DeclContext::decl_iterator Next = D;
268      ++Next;
269      if (Next != DEnd)
270        Terminator = ",";
271    } else
272      Terminator = ";";
273
274    if (Terminator)
275      Out << Terminator;
276    Out << "\n";
277  }
278
279  if (!Decls.empty())
280    ProcessDeclGroup(Decls);
281
282  if (Indent)
283    Indentation -= Policy.Indentation;
284}
285
286void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
287  VisitDeclContext(D, false);
288}
289
290void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
291  std::string S = D->getNameAsString();
292  D->getUnderlyingType().getAsStringInternal(S, Policy);
293  if (!Policy.SuppressSpecifiers)
294    Out << "typedef ";
295  Out << S;
296}
297
298void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
299  Out << "enum " << D << " {\n";
300  VisitDeclContext(D);
301  Indent() << "}";
302}
303
304void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
305  Out << D->getKindName();
306  if (D->getIdentifier())
307    Out << ' ' << D;
308
309  if (D->isDefinition()) {
310    Out << " {\n";
311    VisitDeclContext(D);
312    Indent() << "}";
313  }
314}
315
316void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
317  Out << D;
318  if (Expr *Init = D->getInitExpr()) {
319    Out << " = ";
320    Init->printPretty(Out, Context, 0, Policy, Indentation);
321  }
322}
323
324void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
325  if (!Policy.SuppressSpecifiers) {
326    switch (D->getStorageClass()) {
327    case FunctionDecl::None: break;
328    case FunctionDecl::Extern: Out << "extern "; break;
329    case FunctionDecl::Static: Out << "static "; break;
330    case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break;
331    }
332
333    if (D->isInlineSpecified())           Out << "inline ";
334    if (D->isVirtualAsWritten()) Out << "virtual ";
335  }
336
337  PrintingPolicy SubPolicy(Policy);
338  SubPolicy.SuppressSpecifiers = false;
339  std::string Proto = D->getNameAsString();
340  if (isa<FunctionType>(D->getType().getTypePtr())) {
341    const FunctionType *AFT = D->getType()->getAs<FunctionType>();
342
343    const FunctionProtoType *FT = 0;
344    if (D->hasWrittenPrototype())
345      FT = dyn_cast<FunctionProtoType>(AFT);
346
347    Proto += "(";
348    if (FT) {
349      llvm::raw_string_ostream POut(Proto);
350      DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation);
351      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
352        if (i) POut << ", ";
353        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
354      }
355
356      if (FT->isVariadic()) {
357        if (D->getNumParams()) POut << ", ";
358        POut << "...";
359      }
360    } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) {
361      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
362        if (i)
363          Proto += ", ";
364        Proto += D->getParamDecl(i)->getNameAsString();
365      }
366    }
367
368    Proto += ")";
369
370    if (FT && FT->hasExceptionSpec()) {
371      Proto += " throw(";
372      if (FT->hasAnyExceptionSpec())
373        Proto += "...";
374      else
375        for (unsigned I = 0, N = FT->getNumExceptions(); I != N; ++I) {
376          if (I)
377            Proto += ", ";
378
379
380          std::string ExceptionType;
381          FT->getExceptionType(I).getAsStringInternal(ExceptionType, SubPolicy);
382          Proto += ExceptionType;
383        }
384      Proto += ")";
385    }
386
387    if (D->hasAttr<NoReturnAttr>())
388      Proto += " __attribute((noreturn))";
389    if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) {
390      if (CDecl->getNumBaseOrMemberInitializers() > 0) {
391        Proto += " : ";
392        Out << Proto;
393        Proto.clear();
394        for (CXXConstructorDecl::init_const_iterator B = CDecl->init_begin(),
395             E = CDecl->init_end();
396             B != E; ++B) {
397          CXXBaseOrMemberInitializer * BMInitializer = (*B);
398          if (B != CDecl->init_begin())
399            Out << ", ";
400          if (BMInitializer->isMemberInitializer()) {
401            FieldDecl *FD = BMInitializer->getMember();
402            Out << FD;
403          } else {
404            Out << QualType(BMInitializer->getBaseClass(), 0).getAsString();
405          }
406
407          Out << "(";
408          if (!BMInitializer->getInit()) {
409            // Nothing to print
410          } else {
411            Expr *Init = BMInitializer->getInit();
412            if (CXXExprWithTemporaries *Tmp
413                  = dyn_cast<CXXExprWithTemporaries>(Init))
414              Init = Tmp->getSubExpr();
415
416            Init = Init->IgnoreParens();
417
418            Expr *SimpleInit = 0;
419            Expr **Args = 0;
420            unsigned NumArgs = 0;
421            if (ParenListExpr *ParenList = dyn_cast<ParenListExpr>(Init)) {
422              Args = ParenList->getExprs();
423              NumArgs = ParenList->getNumExprs();
424            } else if (CXXConstructExpr *Construct
425                                          = dyn_cast<CXXConstructExpr>(Init)) {
426              Args = Construct->getArgs();
427              NumArgs = Construct->getNumArgs();
428            } else
429              SimpleInit = Init;
430
431            if (SimpleInit)
432              SimpleInit->printPretty(Out, Context, 0, Policy, Indentation);
433            else {
434              for (unsigned I = 0; I != NumArgs; ++I) {
435                if (isa<CXXDefaultArgExpr>(Args[I]))
436                  break;
437
438                if (I)
439                  Out << ", ";
440                Args[I]->printPretty(Out, Context, 0, Policy, Indentation);
441              }
442            }
443          }
444          Out << ")";
445        }
446      }
447    }
448    else
449      AFT->getResultType().getAsStringInternal(Proto, Policy);
450  } else {
451    D->getType().getAsStringInternal(Proto, Policy);
452  }
453
454  Out << Proto;
455
456  if (D->isPure())
457    Out << " = 0";
458  else if (D->isDeleted())
459    Out << " = delete";
460  else if (D->isThisDeclarationADefinition()) {
461    if (!D->hasPrototype() && D->getNumParams()) {
462      // This is a K&R function definition, so we need to print the
463      // parameters.
464      Out << '\n';
465      DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation);
466      Indentation += Policy.Indentation;
467      for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
468        Indent();
469        ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
470        Out << ";\n";
471      }
472      Indentation -= Policy.Indentation;
473    } else
474      Out << ' ';
475
476    D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation);
477    Out << '\n';
478  }
479}
480
481void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
482  if (!Policy.SuppressSpecifiers && D->isMutable())
483    Out << "mutable ";
484
485  std::string Name = D->getNameAsString();
486  D->getType().getAsStringInternal(Name, Policy);
487  Out << Name;
488
489  if (D->isBitField()) {
490    Out << " : ";
491    D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation);
492  }
493}
494
495void DeclPrinter::VisitVarDecl(VarDecl *D) {
496  if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None)
497    Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " ";
498
499  if (!Policy.SuppressSpecifiers && D->isThreadSpecified())
500    Out << "__thread ";
501
502  std::string Name = D->getNameAsString();
503  QualType T = D->getType();
504  if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D))
505    T = Parm->getOriginalType();
506  T.getAsStringInternal(Name, Policy);
507  Out << Name;
508  if (D->getInit()) {
509    if (D->hasCXXDirectInitializer())
510      Out << "(";
511    else
512      Out << " = ";
513    D->getInit()->printPretty(Out, Context, 0, Policy, Indentation);
514    if (D->hasCXXDirectInitializer())
515      Out << ")";
516  }
517}
518
519void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
520  VisitVarDecl(D);
521}
522
523void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
524  Out << "__asm (";
525  D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation);
526  Out << ")";
527}
528
529//----------------------------------------------------------------------------
530// C++ declarations
531//----------------------------------------------------------------------------
532void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
533  Out << "namespace " << D << " {\n";
534  VisitDeclContext(D);
535  Indent() << "}";
536}
537
538void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
539  Out << "using namespace ";
540  if (D->getQualifier())
541    D->getQualifier()->print(Out, Policy);
542  Out << D->getNominatedNamespaceAsWritten();
543}
544
545void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
546  Out << "namespace " << D << " = ";
547  if (D->getQualifier())
548    D->getQualifier()->print(Out, Policy);
549  Out << D->getAliasedNamespace();
550}
551
552void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
553  Out << D->getKindName();
554  if (D->getIdentifier())
555    Out << ' ' << D;
556
557  if (D->isDefinition()) {
558    // Print the base classes
559    if (D->getNumBases()) {
560      Out << " : ";
561      for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
562             BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
563        if (Base != D->bases_begin())
564          Out << ", ";
565
566        if (Base->isVirtual())
567          Out << "virtual ";
568
569        AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
570        if (AS != AS_none)
571          Print(AS);
572        Out << " " << Base->getType().getAsString(Policy);
573      }
574    }
575
576    // Print the class definition
577    // FIXME: Doesn't print access specifiers, e.g., "public:"
578    Out << " {\n";
579    VisitDeclContext(D);
580    Indent() << "}";
581  }
582}
583
584void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
585  const char *l;
586  if (D->getLanguage() == LinkageSpecDecl::lang_c)
587    l = "C";
588  else {
589    assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
590           "unknown language in linkage specification");
591    l = "C++";
592  }
593
594  Out << "extern \"" << l << "\" ";
595  if (D->hasBraces()) {
596    Out << "{\n";
597    VisitDeclContext(D);
598    Indent() << "}";
599  } else
600    Visit(*D->decls_begin());
601}
602
603void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) {
604  Out << "template <";
605
606  TemplateParameterList *Params = D->getTemplateParameters();
607  for (unsigned i = 0, e = Params->size(); i != e; ++i) {
608    if (i != 0)
609      Out << ", ";
610
611    const Decl *Param = Params->getParam(i);
612    if (const TemplateTypeParmDecl *TTP =
613          dyn_cast<TemplateTypeParmDecl>(Param)) {
614
615      QualType ParamType =
616        Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP));
617
618      if (TTP->wasDeclaredWithTypename())
619        Out << "typename ";
620      else
621        Out << "class ";
622
623      if (TTP->isParameterPack())
624        Out << "... ";
625
626      Out << ParamType.getAsString(Policy);
627
628      if (TTP->hasDefaultArgument()) {
629        Out << " = ";
630        Out << TTP->getDefaultArgument().getAsString(Policy);
631      };
632    } else if (const NonTypeTemplateParmDecl *NTTP =
633                 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
634      Out << NTTP->getType().getAsString(Policy);
635
636      if (IdentifierInfo *Name = NTTP->getIdentifier()) {
637        Out << ' ';
638        Out << Name->getName();
639      }
640
641      if (NTTP->hasDefaultArgument()) {
642        Out << " = ";
643        NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy,
644                                                Indentation);
645      }
646    }
647  }
648
649  Out << "> ";
650
651  Visit(D->getTemplatedDecl());
652}
653
654//----------------------------------------------------------------------------
655// Objective-C declarations
656//----------------------------------------------------------------------------
657
658void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) {
659  Out << "@class ";
660  for (ObjCClassDecl::iterator I = D->begin(), E = D->end();
661       I != E; ++I) {
662    if (I != D->begin()) Out << ", ";
663    Out << I->getInterface();
664  }
665}
666
667void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
668  if (OMD->isInstanceMethod())
669    Out << "- ";
670  else
671    Out << "+ ";
672  if (!OMD->getResultType().isNull())
673    Out << '(' << OMD->getResultType().getAsString(Policy) << ")";
674
675  std::string name = OMD->getSelector().getAsString();
676  std::string::size_type pos, lastPos = 0;
677  for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(),
678       E = OMD->param_end(); PI != E; ++PI) {
679    // FIXME: selector is missing here!
680    pos = name.find_first_of(":", lastPos);
681    Out << " " << name.substr(lastPos, pos - lastPos);
682    Out << ":(" << (*PI)->getType().getAsString(Policy) << ')' << *PI;
683    lastPos = pos + 1;
684  }
685
686  if (OMD->param_begin() == OMD->param_end())
687    Out << " " << name;
688
689  if (OMD->isVariadic())
690      Out << ", ...";
691
692  if (OMD->getBody()) {
693    Out << ' ';
694    OMD->getBody()->printPretty(Out, Context, 0, Policy);
695    Out << '\n';
696  }
697}
698
699void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
700  std::string I = OID->getNameAsString();
701  ObjCInterfaceDecl *SID = OID->getSuperClass();
702
703  if (SID)
704    Out << "@implementation " << I << " : " << SID;
705  else
706    Out << "@implementation " << I;
707  Out << "\n";
708  VisitDeclContext(OID, false);
709  Out << "@end";
710}
711
712void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
713  std::string I = OID->getNameAsString();
714  ObjCInterfaceDecl *SID = OID->getSuperClass();
715
716  if (SID)
717    Out << "@interface " << I << " : " << SID;
718  else
719    Out << "@interface " << I;
720
721  // Protocols?
722  const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
723  if (!Protocols.empty()) {
724    for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
725         E = Protocols.end(); I != E; ++I)
726      Out << (I == Protocols.begin() ? '<' : ',') << *I;
727  }
728
729  if (!Protocols.empty())
730    Out << "> ";
731
732  if (OID->ivar_size() > 0) {
733    Out << "{\n";
734    Indentation += Policy.Indentation;
735    for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(),
736         E = OID->ivar_end(); I != E; ++I) {
737      Indent() << (*I)->getType().getAsString(Policy) << ' ' << *I << ";\n";
738    }
739    Indentation -= Policy.Indentation;
740    Out << "}\n";
741  }
742
743  VisitDeclContext(OID, false);
744  Out << "@end";
745  // FIXME: implement the rest...
746}
747
748void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
749  Out << "@protocol ";
750  for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(),
751         E = D->protocol_end();
752       I != E; ++I) {
753    if (I != D->protocol_begin()) Out << ", ";
754    Out << *I;
755  }
756}
757
758void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
759  Out << "@protocol " << PID << '\n';
760  VisitDeclContext(PID, false);
761  Out << "@end";
762}
763
764void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
765  Out << "@implementation " << PID->getClassInterface() << '(' << PID << ")\n";
766
767  VisitDeclContext(PID, false);
768  Out << "@end";
769  // FIXME: implement the rest...
770}
771
772void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
773  Out << "@interface " << PID->getClassInterface() << '(' << PID << ")\n";
774  VisitDeclContext(PID, false);
775  Out << "@end";
776
777  // FIXME: implement the rest...
778}
779
780void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
781  Out << "@compatibility_alias " << AID
782      << ' ' << AID->getClassInterface() << ";\n";
783}
784
785/// PrintObjCPropertyDecl - print a property declaration.
786///
787void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
788  if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
789    Out << "@required\n";
790  else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
791    Out << "@optional\n";
792
793  Out << "@property";
794  if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
795    bool first = true;
796    Out << " (";
797    if (PDecl->getPropertyAttributes() &
798        ObjCPropertyDecl::OBJC_PR_readonly) {
799      Out << (first ? ' ' : ',') << "readonly";
800      first = false;
801  }
802
803  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
804    Out << (first ? ' ' : ',') << "getter = "
805        << PDecl->getGetterName().getAsString();
806    first = false;
807  }
808  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
809    Out << (first ? ' ' : ',') << "setter = "
810        << PDecl->getSetterName().getAsString();
811    first = false;
812  }
813
814  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
815    Out << (first ? ' ' : ',') << "assign";
816    first = false;
817  }
818
819  if (PDecl->getPropertyAttributes() &
820      ObjCPropertyDecl::OBJC_PR_readwrite) {
821    Out << (first ? ' ' : ',') << "readwrite";
822    first = false;
823  }
824
825  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
826    Out << (first ? ' ' : ',') << "retain";
827    first = false;
828  }
829
830  if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
831    Out << (first ? ' ' : ',') << "copy";
832    first = false;
833  }
834
835  if (PDecl->getPropertyAttributes() &
836      ObjCPropertyDecl::OBJC_PR_nonatomic) {
837    Out << (first ? ' ' : ',') << "nonatomic";
838    first = false;
839  }
840  Out << " )";
841  }
842  Out << ' ' << PDecl->getType().getAsString(Policy) << ' ' << PDecl;
843}
844
845void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
846  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
847    Out << "@synthesize ";
848  else
849    Out << "@dynamic ";
850  Out << PID->getPropertyDecl();
851  if (PID->getPropertyIvarDecl())
852    Out << '=' << PID->getPropertyIvarDecl();
853}
854
855void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
856  Out << "using ";
857  D->getTargetNestedNameDecl()->print(Out, Policy);
858  Out << D;
859}
860
861void
862DeclPrinter::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) {
863  Out << "using typename ";
864  D->getTargetNestedNameSpecifier()->print(Out, Policy);
865  Out << D->getDeclName();
866}
867
868void DeclPrinter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
869  Out << "using ";
870  D->getTargetNestedNameSpecifier()->print(Out, Policy);
871  Out << D->getDeclName();
872}
873
874void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) {
875  // ignore
876}
877