1 //===--- DeclPrinter.cpp - Printing implementation for Decl ASTs ----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Decl::print method, which pretty prints the
11 // AST back out to C/Objective-C/C++/Objective-C++ code.
13 //===----------------------------------------------------------------------===//
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/Attr.h"
16 #include "clang/AST/Decl.h"
17 #include "clang/AST/DeclCXX.h"
18 #include "clang/AST/DeclObjC.h"
19 #include "clang/AST/DeclVisitor.h"
20 #include "clang/AST/Expr.h"
21 #include "clang/AST/ExprCXX.h"
22 #include "clang/AST/PrettyPrinter.h"
23 #include "clang/Basic/Module.h"
24 #include "llvm/Support/raw_ostream.h"
25 using namespace clang;
28 class DeclPrinter : public DeclVisitor<DeclPrinter> {
30 PrintingPolicy Policy;
32 bool PrintInstantiation;
34 raw_ostream& Indent() { return Indent(Indentation); }
35 raw_ostream& Indent(unsigned Indentation);
36 void ProcessDeclGroup(SmallVectorImpl<Decl*>& Decls);
38 void Print(AccessSpecifier AS);
41 DeclPrinter(raw_ostream &Out, const PrintingPolicy &Policy,
42 unsigned Indentation = 0, bool PrintInstantiation = false)
43 : Out(Out), Policy(Policy), Indentation(Indentation),
44 PrintInstantiation(PrintInstantiation) { }
46 void VisitDeclContext(DeclContext *DC, bool Indent = true);
48 void VisitTranslationUnitDecl(TranslationUnitDecl *D);
49 void VisitTypedefDecl(TypedefDecl *D);
50 void VisitTypeAliasDecl(TypeAliasDecl *D);
51 void VisitEnumDecl(EnumDecl *D);
52 void VisitRecordDecl(RecordDecl *D);
53 void VisitEnumConstantDecl(EnumConstantDecl *D);
54 void VisitEmptyDecl(EmptyDecl *D);
55 void VisitFunctionDecl(FunctionDecl *D);
56 void VisitFriendDecl(FriendDecl *D);
57 void VisitFieldDecl(FieldDecl *D);
58 void VisitVarDecl(VarDecl *D);
59 void VisitLabelDecl(LabelDecl *D);
60 void VisitParmVarDecl(ParmVarDecl *D);
61 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
62 void VisitImportDecl(ImportDecl *D);
63 void VisitStaticAssertDecl(StaticAssertDecl *D);
64 void VisitNamespaceDecl(NamespaceDecl *D);
65 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
66 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
67 void VisitCXXRecordDecl(CXXRecordDecl *D);
68 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
69 void VisitTemplateDecl(const TemplateDecl *D);
70 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
71 void VisitClassTemplateDecl(ClassTemplateDecl *D);
72 void VisitObjCMethodDecl(ObjCMethodDecl *D);
73 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
74 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
75 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
76 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
77 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
78 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
79 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
80 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
81 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
82 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
83 void VisitUsingDecl(UsingDecl *D);
84 void VisitUsingShadowDecl(UsingShadowDecl *D);
85 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
87 void PrintTemplateParameters(const TemplateParameterList *Params,
88 const TemplateArgumentList *Args = nullptr);
89 void prettyPrintAttributes(Decl *D);
90 void printDeclType(QualType T, StringRef DeclName, bool Pack = false);
94 void Decl::print(raw_ostream &Out, unsigned Indentation,
95 bool PrintInstantiation) const {
96 print(Out, getASTContext().getPrintingPolicy(), Indentation, PrintInstantiation);
99 void Decl::print(raw_ostream &Out, const PrintingPolicy &Policy,
100 unsigned Indentation, bool PrintInstantiation) const {
101 DeclPrinter Printer(Out, Policy, Indentation, PrintInstantiation);
102 Printer.Visit(const_cast<Decl*>(this));
105 static QualType GetBaseType(QualType T) {
106 // FIXME: This should be on the Type class!
107 QualType BaseType = T;
108 while (!BaseType->isSpecifierType()) {
109 if (isa<TypedefType>(BaseType))
111 else if (const PointerType* PTy = BaseType->getAs<PointerType>())
112 BaseType = PTy->getPointeeType();
113 else if (const BlockPointerType *BPy = BaseType->getAs<BlockPointerType>())
114 BaseType = BPy->getPointeeType();
115 else if (const ArrayType* ATy = dyn_cast<ArrayType>(BaseType))
116 BaseType = ATy->getElementType();
117 else if (const FunctionType* FTy = BaseType->getAs<FunctionType>())
118 BaseType = FTy->getReturnType();
119 else if (const VectorType *VTy = BaseType->getAs<VectorType>())
120 BaseType = VTy->getElementType();
121 else if (const ReferenceType *RTy = BaseType->getAs<ReferenceType>())
122 BaseType = RTy->getPointeeType();
124 llvm_unreachable("Unknown declarator!");
129 static QualType getDeclType(Decl* D) {
130 if (TypedefNameDecl* TDD = dyn_cast<TypedefNameDecl>(D))
131 return TDD->getUnderlyingType();
132 if (ValueDecl* VD = dyn_cast<ValueDecl>(D))
133 return VD->getType();
137 void Decl::printGroup(Decl** Begin, unsigned NumDecls,
138 raw_ostream &Out, const PrintingPolicy &Policy,
139 unsigned Indentation) {
141 (*Begin)->print(Out, Policy, Indentation);
145 Decl** End = Begin + NumDecls;
146 TagDecl* TD = dyn_cast<TagDecl>(*Begin);
150 PrintingPolicy SubPolicy(Policy);
151 if (TD && TD->isCompleteDefinition()) {
152 TD->print(Out, Policy, Indentation);
154 SubPolicy.SuppressTag = true;
158 for ( ; Begin != End; ++Begin) {
160 SubPolicy.SuppressSpecifiers = false;
163 if (!isFirst) Out << ", ";
164 SubPolicy.SuppressSpecifiers = true;
167 (*Begin)->print(Out, SubPolicy, Indentation);
171 LLVM_DUMP_METHOD void DeclContext::dumpDeclContext() const {
172 // Get the translation unit
173 const DeclContext *DC = this;
174 while (!DC->isTranslationUnit())
175 DC = DC->getParent();
177 ASTContext &Ctx = cast<TranslationUnitDecl>(DC)->getASTContext();
178 DeclPrinter Printer(llvm::errs(), Ctx.getPrintingPolicy(), 0);
179 Printer.VisitDeclContext(const_cast<DeclContext *>(this), /*Indent=*/false);
182 raw_ostream& DeclPrinter::Indent(unsigned Indentation) {
183 for (unsigned i = 0; i != Indentation; ++i)
188 void DeclPrinter::prettyPrintAttributes(Decl *D) {
189 if (Policy.PolishForDeclaration)
193 AttrVec &Attrs = D->getAttrs();
194 for (AttrVec::const_iterator i=Attrs.begin(), e=Attrs.end(); i!=e; ++i) {
196 A->printPretty(Out, Policy);
201 void DeclPrinter::printDeclType(QualType T, StringRef DeclName, bool Pack) {
202 // Normally, a PackExpansionType is written as T[3]... (for instance, as a
203 // template argument), but if it is the type of a declaration, the ellipsis
204 // is placed before the name being declared.
205 if (auto *PET = T->getAs<PackExpansionType>()) {
207 T = PET->getPattern();
209 T.print(Out, Policy, (Pack ? "..." : "") + DeclName);
212 void DeclPrinter::ProcessDeclGroup(SmallVectorImpl<Decl*>& Decls) {
214 Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation);
220 void DeclPrinter::Print(AccessSpecifier AS) {
222 case AS_none: llvm_unreachable("No access specifier!");
223 case AS_public: Out << "public"; break;
224 case AS_protected: Out << "protected"; break;
225 case AS_private: Out << "private"; break;
229 //----------------------------------------------------------------------------
230 // Common C declarations
231 //----------------------------------------------------------------------------
233 void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) {
234 if (Policy.TerseOutput)
238 Indentation += Policy.Indentation;
240 SmallVector<Decl*, 2> Decls;
241 for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end();
244 // Don't print ObjCIvarDecls, as they are printed when visiting the
245 // containing ObjCInterfaceDecl.
246 if (isa<ObjCIvarDecl>(*D))
249 // Skip over implicit declarations in pretty-printing mode.
253 // The next bits of code handles stuff like "struct {int x;} a,b"; we're
254 // forced to merge the declarations because there's no other way to
255 // refer to the struct in question. This limited merging is safe without
256 // a bunch of other checks because it only merges declarations directly
257 // referring to the tag, not typedefs.
259 // Check whether the current declaration should be grouped with a previous
261 QualType CurDeclType = getDeclType(*D);
262 if (!Decls.empty() && !CurDeclType.isNull()) {
263 QualType BaseType = GetBaseType(CurDeclType);
264 if (!BaseType.isNull() && isa<ElaboratedType>(BaseType))
265 BaseType = cast<ElaboratedType>(BaseType)->getNamedType();
266 if (!BaseType.isNull() && isa<TagType>(BaseType) &&
267 cast<TagType>(BaseType)->getDecl() == Decls[0]) {
273 // If we have a merged group waiting to be handled, handle it now.
275 ProcessDeclGroup(Decls);
277 // If the current declaration is an unnamed tag type, save it
278 // so we can merge it with the subsequent declaration(s) using it.
279 if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) {
284 if (isa<AccessSpecDecl>(*D)) {
285 Indentation -= Policy.Indentation;
287 Print(D->getAccess());
289 Indentation += Policy.Indentation;
296 // FIXME: Need to be able to tell the DeclPrinter when
297 const char *Terminator = nullptr;
298 if (isa<OMPThreadPrivateDecl>(*D))
299 Terminator = nullptr;
300 else if (isa<FunctionDecl>(*D) &&
301 cast<FunctionDecl>(*D)->isThisDeclarationADefinition())
302 Terminator = nullptr;
303 else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody())
304 Terminator = nullptr;
305 else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) ||
306 isa<ObjCImplementationDecl>(*D) ||
307 isa<ObjCInterfaceDecl>(*D) ||
308 isa<ObjCProtocolDecl>(*D) ||
309 isa<ObjCCategoryImplDecl>(*D) ||
310 isa<ObjCCategoryDecl>(*D))
311 Terminator = nullptr;
312 else if (isa<EnumConstantDecl>(*D)) {
313 DeclContext::decl_iterator Next = D;
326 ProcessDeclGroup(Decls);
329 Indentation -= Policy.Indentation;
332 void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
333 VisitDeclContext(D, false);
336 void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) {
337 if (!Policy.SuppressSpecifiers) {
340 if (D->isModulePrivate())
341 Out << "__module_private__ ";
343 D->getTypeSourceInfo()->getType().print(Out, Policy, D->getName());
344 prettyPrintAttributes(D);
347 void DeclPrinter::VisitTypeAliasDecl(TypeAliasDecl *D) {
348 Out << "using " << *D;
349 prettyPrintAttributes(D);
350 Out << " = " << D->getTypeSourceInfo()->getType().getAsString(Policy);
353 void DeclPrinter::VisitEnumDecl(EnumDecl *D) {
354 if (!Policy.SuppressSpecifiers && D->isModulePrivate())
355 Out << "__module_private__ ";
358 if (D->isScopedUsingClassTag())
366 Out << " : " << D->getIntegerType().stream(Policy);
368 if (D->isCompleteDefinition()) {
373 prettyPrintAttributes(D);
376 void DeclPrinter::VisitRecordDecl(RecordDecl *D) {
377 if (!Policy.SuppressSpecifiers && D->isModulePrivate())
378 Out << "__module_private__ ";
379 Out << D->getKindName();
381 prettyPrintAttributes(D);
383 if (D->getIdentifier())
386 if (D->isCompleteDefinition()) {
393 void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) {
395 if (Expr *Init = D->getInitExpr()) {
397 Init->printPretty(Out, nullptr, Policy, Indentation);
401 void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
402 CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D);
403 CXXConversionDecl *ConversionDecl = dyn_cast<CXXConversionDecl>(D);
404 if (!Policy.SuppressSpecifiers) {
405 switch (D->getStorageClass()) {
407 case SC_Extern: Out << "extern "; break;
408 case SC_Static: Out << "static "; break;
409 case SC_PrivateExtern: Out << "__private_extern__ "; break;
410 case SC_Auto: case SC_Register: case SC_OpenCLWorkGroupLocal:
411 llvm_unreachable("invalid for functions");
414 if (D->isInlineSpecified()) Out << "inline ";
415 if (D->isVirtualAsWritten()) Out << "virtual ";
416 if (D->isModulePrivate()) Out << "__module_private__ ";
417 if (D->isConstexpr() && !D->isExplicitlyDefaulted()) Out << "constexpr ";
418 if ((CDecl && CDecl->isExplicitSpecified()) ||
419 (ConversionDecl && ConversionDecl->isExplicit()))
423 PrintingPolicy SubPolicy(Policy);
424 SubPolicy.SuppressSpecifiers = false;
425 std::string Proto = D->getNameInfo().getAsString();
427 QualType Ty = D->getType();
428 while (const ParenType *PT = dyn_cast<ParenType>(Ty)) {
429 Proto = '(' + Proto + ')';
430 Ty = PT->getInnerType();
433 if (const FunctionType *AFT = Ty->getAs<FunctionType>()) {
434 const FunctionProtoType *FT = nullptr;
435 if (D->hasWrittenPrototype())
436 FT = dyn_cast<FunctionProtoType>(AFT);
440 llvm::raw_string_ostream POut(Proto);
441 DeclPrinter ParamPrinter(POut, SubPolicy, Indentation);
442 for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
444 ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
447 if (FT->isVariadic()) {
448 if (D->getNumParams()) POut << ", ";
451 } else if (D->doesThisDeclarationHaveABody() && !D->hasPrototype()) {
452 for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
455 Proto += D->getParamDecl(i)->getNameAsString();
464 if (FT->isVolatile())
465 Proto += " volatile";
466 if (FT->isRestrict())
467 Proto += " restrict";
469 switch (FT->getRefQualifier()) {
481 if (FT && FT->hasDynamicExceptionSpec()) {
483 if (FT->getExceptionSpecType() == EST_MSAny)
486 for (unsigned I = 0, N = FT->getNumExceptions(); I != N; ++I) {
490 Proto += FT->getExceptionType(I).getAsString(SubPolicy);
493 } else if (FT && isNoexceptExceptionSpec(FT->getExceptionSpecType())) {
494 Proto += " noexcept";
495 if (FT->getExceptionSpecType() == EST_ComputedNoexcept) {
497 llvm::raw_string_ostream EOut(Proto);
498 FT->getNoexceptExpr()->printPretty(EOut, nullptr, SubPolicy,
507 bool HasInitializerList = false;
508 for (const auto *BMInitializer : CDecl->inits()) {
509 if (BMInitializer->isInClassMemberInitializer())
512 if (!HasInitializerList) {
516 HasInitializerList = true;
520 if (BMInitializer->isAnyMemberInitializer()) {
521 FieldDecl *FD = BMInitializer->getAnyMember();
524 Out << QualType(BMInitializer->getBaseClass(), 0).getAsString(Policy);
528 if (!BMInitializer->getInit()) {
531 Expr *Init = BMInitializer->getInit();
532 if (ExprWithCleanups *Tmp = dyn_cast<ExprWithCleanups>(Init))
533 Init = Tmp->getSubExpr();
535 Init = Init->IgnoreParens();
537 Expr *SimpleInit = nullptr;
538 Expr **Args = nullptr;
539 unsigned NumArgs = 0;
540 if (ParenListExpr *ParenList = dyn_cast<ParenListExpr>(Init)) {
541 Args = ParenList->getExprs();
542 NumArgs = ParenList->getNumExprs();
543 } else if (CXXConstructExpr *Construct
544 = dyn_cast<CXXConstructExpr>(Init)) {
545 Args = Construct->getArgs();
546 NumArgs = Construct->getNumArgs();
551 SimpleInit->printPretty(Out, nullptr, Policy, Indentation);
553 for (unsigned I = 0; I != NumArgs; ++I) {
554 assert(Args[I] != nullptr && "Expected non-null Expr");
555 if (isa<CXXDefaultArgExpr>(Args[I]))
560 Args[I]->printPretty(Out, nullptr, Policy, Indentation);
565 if (BMInitializer->isPackExpansion())
568 } else if (!ConversionDecl && !isa<CXXDestructorDecl>(D)) {
569 if (FT && FT->hasTrailingReturn()) {
570 Out << "auto " << Proto << " -> ";
573 AFT->getReturnType().print(Out, Policy, Proto);
578 Ty.print(Out, Policy, Proto);
581 prettyPrintAttributes(D);
585 else if (D->isDeletedAsWritten())
587 else if (D->isExplicitlyDefaulted())
589 else if (D->doesThisDeclarationHaveABody() && !Policy.TerseOutput) {
590 if (!D->hasPrototype() && D->getNumParams()) {
591 // This is a K&R function definition, so we need to print the
594 DeclPrinter ParamPrinter(Out, SubPolicy, Indentation);
595 Indentation += Policy.Indentation;
596 for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
598 ParamPrinter.VisitParmVarDecl(D->getParamDecl(i));
601 Indentation -= Policy.Indentation;
606 D->getBody()->printPretty(Out, nullptr, SubPolicy, Indentation);
611 void DeclPrinter::VisitFriendDecl(FriendDecl *D) {
612 if (TypeSourceInfo *TSI = D->getFriendType()) {
613 unsigned NumTPLists = D->getFriendTypeNumTemplateParameterLists();
614 for (unsigned i = 0; i < NumTPLists; ++i)
615 PrintTemplateParameters(D->getFriendTypeTemplateParameterList(i));
617 Out << " " << TSI->getType().getAsString(Policy);
619 else if (FunctionDecl *FD =
620 dyn_cast<FunctionDecl>(D->getFriendDecl())) {
622 VisitFunctionDecl(FD);
624 else if (FunctionTemplateDecl *FTD =
625 dyn_cast<FunctionTemplateDecl>(D->getFriendDecl())) {
627 VisitFunctionTemplateDecl(FTD);
629 else if (ClassTemplateDecl *CTD =
630 dyn_cast<ClassTemplateDecl>(D->getFriendDecl())) {
632 VisitRedeclarableTemplateDecl(CTD);
636 void DeclPrinter::VisitFieldDecl(FieldDecl *D) {
637 if (!Policy.SuppressSpecifiers && D->isMutable())
639 if (!Policy.SuppressSpecifiers && D->isModulePrivate())
640 Out << "__module_private__ ";
642 Out << D->getASTContext().getUnqualifiedObjCPointerType(D->getType()).
643 stream(Policy, D->getName());
645 if (D->isBitField()) {
647 D->getBitWidth()->printPretty(Out, nullptr, Policy, Indentation);
650 Expr *Init = D->getInClassInitializer();
651 if (!Policy.SuppressInitializers && Init) {
652 if (D->getInClassInitStyle() == ICIS_ListInit)
656 Init->printPretty(Out, nullptr, Policy, Indentation);
658 prettyPrintAttributes(D);
661 void DeclPrinter::VisitLabelDecl(LabelDecl *D) {
665 void DeclPrinter::VisitVarDecl(VarDecl *D) {
666 if (!Policy.SuppressSpecifiers) {
667 StorageClass SC = D->getStorageClass();
669 Out << VarDecl::getStorageClassSpecifierString(SC) << " ";
671 switch (D->getTSCSpec()) {
672 case TSCS_unspecified:
677 case TSCS__Thread_local:
678 Out << "_Thread_local ";
680 case TSCS_thread_local:
681 Out << "thread_local ";
685 if (D->isModulePrivate())
686 Out << "__module_private__ ";
689 QualType T = D->getTypeSourceInfo()
690 ? D->getTypeSourceInfo()->getType()
691 : D->getASTContext().getUnqualifiedObjCPointerType(D->getType());
692 printDeclType(T, D->getName());
693 Expr *Init = D->getInit();
694 if (!Policy.SuppressInitializers && Init) {
695 bool ImplicitInit = false;
696 if (CXXConstructExpr *Construct =
697 dyn_cast<CXXConstructExpr>(Init->IgnoreImplicit())) {
698 if (D->getInitStyle() == VarDecl::CallInit &&
699 !Construct->isListInitialization()) {
700 ImplicitInit = Construct->getNumArgs() == 0 ||
701 Construct->getArg(0)->isDefaultArgument();
705 if ((D->getInitStyle() == VarDecl::CallInit) && !isa<ParenListExpr>(Init))
707 else if (D->getInitStyle() == VarDecl::CInit) {
710 Init->printPretty(Out, nullptr, Policy, Indentation);
711 if ((D->getInitStyle() == VarDecl::CallInit) && !isa<ParenListExpr>(Init))
715 prettyPrintAttributes(D);
718 void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) {
722 void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
724 D->getAsmString()->printPretty(Out, nullptr, Policy, Indentation);
728 void DeclPrinter::VisitImportDecl(ImportDecl *D) {
729 Out << "@import " << D->getImportedModule()->getFullModuleName()
733 void DeclPrinter::VisitStaticAssertDecl(StaticAssertDecl *D) {
734 Out << "static_assert(";
735 D->getAssertExpr()->printPretty(Out, nullptr, Policy, Indentation);
737 D->getMessage()->printPretty(Out, nullptr, Policy, Indentation);
741 //----------------------------------------------------------------------------
743 //----------------------------------------------------------------------------
744 void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) {
747 Out << "namespace " << *D << " {\n";
752 void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
753 Out << "using namespace ";
754 if (D->getQualifier())
755 D->getQualifier()->print(Out, Policy);
756 Out << *D->getNominatedNamespaceAsWritten();
759 void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
760 Out << "namespace " << *D << " = ";
761 if (D->getQualifier())
762 D->getQualifier()->print(Out, Policy);
763 Out << *D->getAliasedNamespace();
766 void DeclPrinter::VisitEmptyDecl(EmptyDecl *D) {
767 prettyPrintAttributes(D);
770 void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) {
771 if (!Policy.SuppressSpecifiers && D->isModulePrivate())
772 Out << "__module_private__ ";
773 Out << D->getKindName();
775 prettyPrintAttributes(D);
777 if (D->getIdentifier())
780 if (D->isCompleteDefinition()) {
781 // Print the base classes
782 if (D->getNumBases()) {
784 for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(),
785 BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) {
786 if (Base != D->bases_begin())
789 if (Base->isVirtual())
792 AccessSpecifier AS = Base->getAccessSpecifierAsWritten();
797 Out << Base->getType().getAsString(Policy);
799 if (Base->isPackExpansion())
804 // Print the class definition
805 // FIXME: Doesn't print access specifiers, e.g., "public:"
812 void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
814 if (D->getLanguage() == LinkageSpecDecl::lang_c)
817 assert(D->getLanguage() == LinkageSpecDecl::lang_cxx &&
818 "unknown language in linkage specification");
822 Out << "extern \"" << l << "\" ";
823 if (D->hasBraces()) {
828 Visit(*D->decls_begin());
831 void DeclPrinter::PrintTemplateParameters(const TemplateParameterList *Params,
832 const TemplateArgumentList *Args) {
834 assert(!Args || Params->size() == Args->size());
838 for (unsigned i = 0, e = Params->size(); i != e; ++i) {
842 const Decl *Param = Params->getParam(i);
843 if (const TemplateTypeParmDecl *TTP =
844 dyn_cast<TemplateTypeParmDecl>(Param)) {
846 if (TTP->wasDeclaredWithTypename())
851 if (TTP->isParameterPack())
858 Args->get(i).print(Policy, Out);
859 } else if (TTP->hasDefaultArgument()) {
861 Out << TTP->getDefaultArgument().getAsString(Policy);
863 } else if (const NonTypeTemplateParmDecl *NTTP =
864 dyn_cast<NonTypeTemplateParmDecl>(Param)) {
866 if (IdentifierInfo *II = NTTP->getIdentifier())
867 Name = II->getName();
868 printDeclType(NTTP->getType(), Name, NTTP->isParameterPack());
872 Args->get(i).print(Policy, Out);
873 } else if (NTTP->hasDefaultArgument()) {
875 NTTP->getDefaultArgument()->printPretty(Out, nullptr, Policy,
878 } else if (const TemplateTemplateParmDecl *TTPD =
879 dyn_cast<TemplateTemplateParmDecl>(Param)) {
880 VisitTemplateDecl(TTPD);
881 // FIXME: print the default argument, if present.
888 void DeclPrinter::VisitTemplateDecl(const TemplateDecl *D) {
889 PrintTemplateParameters(D->getTemplateParameters());
891 if (const TemplateTemplateParmDecl *TTP =
892 dyn_cast<TemplateTemplateParmDecl>(D)) {
894 if (TTP->isParameterPack())
898 Visit(D->getTemplatedDecl());
902 void DeclPrinter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
903 if (PrintInstantiation) {
904 TemplateParameterList *Params = D->getTemplateParameters();
905 for (auto *I : D->specializations()) {
906 PrintTemplateParameters(Params, I->getTemplateSpecializationArgs());
911 return VisitRedeclarableTemplateDecl(D);
914 void DeclPrinter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
915 if (PrintInstantiation) {
916 TemplateParameterList *Params = D->getTemplateParameters();
917 for (auto *I : D->specializations()) {
918 PrintTemplateParameters(Params, &I->getTemplateArgs());
924 return VisitRedeclarableTemplateDecl(D);
927 //----------------------------------------------------------------------------
928 // Objective-C declarations
929 //----------------------------------------------------------------------------
931 void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) {
932 if (OMD->isInstanceMethod())
936 if (!OMD->getReturnType().isNull())
937 Out << '(' << OMD->getASTContext()
938 .getUnqualifiedObjCPointerType(OMD->getReturnType())
939 .getAsString(Policy) << ")";
941 std::string name = OMD->getSelector().getAsString();
942 std::string::size_type pos, lastPos = 0;
943 for (const auto *PI : OMD->params()) {
944 // FIXME: selector is missing here!
945 pos = name.find_first_of(':', lastPos);
946 Out << " " << name.substr(lastPos, pos - lastPos);
947 Out << ":(" << PI->getASTContext().getUnqualifiedObjCPointerType(PI->getType()).
948 getAsString(Policy) << ')' << *PI;
952 if (OMD->param_begin() == OMD->param_end())
955 if (OMD->isVariadic())
958 prettyPrintAttributes(OMD);
960 if (OMD->getBody() && !Policy.TerseOutput) {
962 OMD->getBody()->printPretty(Out, nullptr, Policy);
964 else if (Policy.PolishForDeclaration)
968 void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) {
969 std::string I = OID->getNameAsString();
970 ObjCInterfaceDecl *SID = OID->getSuperClass();
972 bool eolnOut = false;
974 Out << "@implementation " << I << " : " << *SID;
976 Out << "@implementation " << I;
978 if (OID->ivar_size() > 0) {
981 Indentation += Policy.Indentation;
982 for (const auto *I : OID->ivars()) {
983 Indent() << I->getASTContext().getUnqualifiedObjCPointerType(I->getType()).
984 getAsString(Policy) << ' ' << *I << ";\n";
986 Indentation -= Policy.Indentation;
989 else if (SID || (OID->decls_begin() != OID->decls_end())) {
993 VisitDeclContext(OID, false);
999 void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) {
1000 std::string I = OID->getNameAsString();
1001 ObjCInterfaceDecl *SID = OID->getSuperClass();
1003 if (!OID->isThisDeclarationADefinition()) {
1004 Out << "@class " << I << ";";
1007 bool eolnOut = false;
1009 Out << "@interface " << I << " : " << *SID;
1011 Out << "@interface " << I;
1014 const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols();
1015 if (!Protocols.empty()) {
1016 for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
1017 E = Protocols.end(); I != E; ++I)
1018 Out << (I == Protocols.begin() ? '<' : ',') << **I;
1022 if (OID->ivar_size() > 0) {
1025 Indentation += Policy.Indentation;
1026 for (const auto *I : OID->ivars()) {
1027 Indent() << I->getASTContext()
1028 .getUnqualifiedObjCPointerType(I->getType())
1029 .getAsString(Policy) << ' ' << *I << ";\n";
1031 Indentation -= Policy.Indentation;
1034 else if (SID || (OID->decls_begin() != OID->decls_end())) {
1039 VisitDeclContext(OID, false);
1043 // FIXME: implement the rest...
1046 void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) {
1047 if (!PID->isThisDeclarationADefinition()) {
1048 Out << "@protocol " << *PID << ";\n";
1052 const ObjCList<ObjCProtocolDecl> &Protocols = PID->getReferencedProtocols();
1053 if (!Protocols.empty()) {
1054 Out << "@protocol " << *PID;
1055 for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
1056 E = Protocols.end(); I != E; ++I)
1057 Out << (I == Protocols.begin() ? '<' : ',') << **I;
1060 Out << "@protocol " << *PID << '\n';
1061 VisitDeclContext(PID, false);
1065 void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) {
1066 Out << "@implementation " << *PID->getClassInterface() << '(' << *PID <<")\n";
1068 VisitDeclContext(PID, false);
1070 // FIXME: implement the rest...
1073 void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) {
1074 Out << "@interface " << *PID->getClassInterface() << '(' << *PID << ")\n";
1075 if (PID->ivar_size() > 0) {
1077 Indentation += Policy.Indentation;
1078 for (const auto *I : PID->ivars())
1079 Indent() << I->getASTContext().getUnqualifiedObjCPointerType(I->getType()).
1080 getAsString(Policy) << ' ' << *I << ";\n";
1081 Indentation -= Policy.Indentation;
1085 VisitDeclContext(PID, false);
1088 // FIXME: implement the rest...
1091 void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) {
1092 Out << "@compatibility_alias " << *AID
1093 << ' ' << *AID->getClassInterface() << ";\n";
1096 /// PrintObjCPropertyDecl - print a property declaration.
1098 void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) {
1099 if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required)
1100 Out << "@required\n";
1101 else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional)
1102 Out << "@optional\n";
1105 if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) {
1108 if (PDecl->getPropertyAttributes() &
1109 ObjCPropertyDecl::OBJC_PR_readonly) {
1110 Out << (first ? ' ' : ',') << "readonly";
1114 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) {
1115 Out << (first ? ' ' : ',') << "getter = ";
1116 PDecl->getGetterName().print(Out);
1119 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) {
1120 Out << (first ? ' ' : ',') << "setter = ";
1121 PDecl->getSetterName().print(Out);
1125 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) {
1126 Out << (first ? ' ' : ',') << "assign";
1130 if (PDecl->getPropertyAttributes() &
1131 ObjCPropertyDecl::OBJC_PR_readwrite) {
1132 Out << (first ? ' ' : ',') << "readwrite";
1136 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) {
1137 Out << (first ? ' ' : ',') << "retain";
1141 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_strong) {
1142 Out << (first ? ' ' : ',') << "strong";
1146 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) {
1147 Out << (first ? ' ' : ',') << "copy";
1151 if (PDecl->getPropertyAttributes() &
1152 ObjCPropertyDecl::OBJC_PR_nonatomic) {
1153 Out << (first ? ' ' : ',') << "nonatomic";
1156 if (PDecl->getPropertyAttributes() &
1157 ObjCPropertyDecl::OBJC_PR_atomic) {
1158 Out << (first ? ' ' : ',') << "atomic";
1162 (void) first; // Silence dead store warning due to idiomatic code.
1165 Out << ' ' << PDecl->getASTContext().getUnqualifiedObjCPointerType(PDecl->getType()).
1166 getAsString(Policy) << ' ' << *PDecl;
1167 if (Policy.PolishForDeclaration)
1171 void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) {
1172 if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
1173 Out << "@synthesize ";
1176 Out << *PID->getPropertyDecl();
1177 if (PID->getPropertyIvarDecl())
1178 Out << '=' << *PID->getPropertyIvarDecl();
1181 void DeclPrinter::VisitUsingDecl(UsingDecl *D) {
1182 if (!D->isAccessDeclaration())
1184 if (D->hasTypename())
1186 D->getQualifier()->print(Out, Policy);
1191 DeclPrinter::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) {
1192 Out << "using typename ";
1193 D->getQualifier()->print(Out, Policy);
1194 Out << D->getDeclName();
1197 void DeclPrinter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1198 if (!D->isAccessDeclaration())
1200 D->getQualifier()->print(Out, Policy);
1201 Out << D->getName();
1204 void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) {
1208 void DeclPrinter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1209 Out << "#pragma omp threadprivate";
1210 if (!D->varlist_empty()) {
1211 for (OMPThreadPrivateDecl::varlist_iterator I = D->varlist_begin(),
1212 E = D->varlist_end();
1214 Out << (I == D->varlist_begin() ? '(' : ',');
1215 NamedDecl *ND = cast<NamedDecl>(cast<DeclRefExpr>(*I)->getDecl());
1216 ND->printQualifiedName(Out);