Sema.cpp revision 5058ef6c7ab13f285da81c787ea7a5ffe464e8a4 
1//===--- Sema.cpp - AST Builder and Semantic Analysis Implementation ------===//
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 actions class which performs semantic analysis and
11// builds an AST out of a parse stream.
12//
13//===----------------------------------------------------------------------===//
14
15#include "clang/Sema/SemaInternal.h"
16#include "clang/Sema/DelayedDiagnostic.h"
17#include "TargetAttributesSema.h"
18#include "llvm/ADT/DenseMap.h"
19#include "llvm/ADT/SmallSet.h"
20#include "llvm/ADT/APFloat.h"
21#include "clang/Sema/CXXFieldCollector.h"
22#include "clang/Sema/ExternalSemaSource.h"
23#include "clang/Sema/PrettyDeclStackTrace.h"
24#include "clang/Sema/Scope.h"
25#include "clang/Sema/ScopeInfo.h"
26#include "clang/Sema/SemaConsumer.h"
27#include "clang/AST/ASTContext.h"
28#include "clang/AST/ASTDiagnostic.h"
29#include "clang/AST/DeclCXX.h"
30#include "clang/AST/DeclObjC.h"
31#include "clang/AST/Expr.h"
32#include "clang/Lex/Preprocessor.h"
33#include "clang/Basic/PartialDiagnostic.h"
34#include "clang/Basic/TargetInfo.h"
35using namespace clang;
36using namespace sema;
37
38FunctionScopeInfo::~FunctionScopeInfo() { }
39
40void FunctionScopeInfo::Clear(unsigned NumErrors) {
41  HasBranchProtectedScope = false;
42  HasBranchIntoScope = false;
43  HasIndirectGoto = false;
44
45  LabelMap.clear();
46  SwitchStack.clear();
47  Returns.clear();
48  NumErrorsAtStartOfFunction = NumErrors;
49}
50
51BlockScopeInfo::~BlockScopeInfo() { }
52
53void Sema::ActOnTranslationUnitScope(Scope *S) {
54  TUScope = S;
55  PushDeclContext(S, Context.getTranslationUnitDecl());
56
57  VAListTagName = PP.getIdentifierInfo("__va_list_tag");
58
59  if (!Context.isInt128Installed() && // May be set by ASTReader.
60      PP.getTargetInfo().getPointerWidth(0) >= 64) {
61    TypeSourceInfo *TInfo;
62
63    // Install [u]int128_t for 64-bit targets.
64    TInfo = Context.getTrivialTypeSourceInfo(Context.Int128Ty);
65    PushOnScopeChains(TypedefDecl::Create(Context, CurContext,
66                                          SourceLocation(),
67                                          &Context.Idents.get("__int128_t"),
68                                          TInfo), TUScope);
69
70    TInfo = Context.getTrivialTypeSourceInfo(Context.UnsignedInt128Ty);
71    PushOnScopeChains(TypedefDecl::Create(Context, CurContext,
72                                          SourceLocation(),
73                                          &Context.Idents.get("__uint128_t"),
74                                          TInfo), TUScope);
75    Context.setInt128Installed();
76  }
77
78
79  if (!PP.getLangOptions().ObjC1) return;
80
81  // Built-in ObjC types may already be set by ASTReader (hence isNull checks).
82  if (Context.getObjCSelType().isNull()) {
83    // Create the built-in typedef for 'SEL'.
84    QualType SelT = Context.getPointerType(Context.ObjCBuiltinSelTy);
85    TypeSourceInfo *SelInfo = Context.getTrivialTypeSourceInfo(SelT);
86    TypedefDecl *SelTypedef
87      = TypedefDecl::Create(Context, CurContext, SourceLocation(),
88                            &Context.Idents.get("SEL"), SelInfo);
89    PushOnScopeChains(SelTypedef, TUScope);
90    Context.setObjCSelType(Context.getTypeDeclType(SelTypedef));
91    Context.ObjCSelRedefinitionType = Context.getObjCSelType();
92  }
93
94  // Synthesize "@class Protocol;
95  if (Context.getObjCProtoType().isNull()) {
96    ObjCInterfaceDecl *ProtocolDecl =
97      ObjCInterfaceDecl::Create(Context, CurContext, SourceLocation(),
98                                &Context.Idents.get("Protocol"),
99                                SourceLocation(), true);
100    Context.setObjCProtoType(Context.getObjCInterfaceType(ProtocolDecl));
101    PushOnScopeChains(ProtocolDecl, TUScope, false);
102  }
103  // Create the built-in typedef for 'id'.
104  if (Context.getObjCIdType().isNull()) {
105    QualType T = Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 0, 0);
106    T = Context.getObjCObjectPointerType(T);
107    TypeSourceInfo *IdInfo = Context.getTrivialTypeSourceInfo(T);
108    TypedefDecl *IdTypedef
109      = TypedefDecl::Create(Context, CurContext, SourceLocation(),
110                            &Context.Idents.get("id"), IdInfo);
111    PushOnScopeChains(IdTypedef, TUScope);
112    Context.setObjCIdType(Context.getTypeDeclType(IdTypedef));
113    Context.ObjCIdRedefinitionType = Context.getObjCIdType();
114  }
115  // Create the built-in typedef for 'Class'.
116  if (Context.getObjCClassType().isNull()) {
117    QualType T = Context.getObjCObjectType(Context.ObjCBuiltinClassTy, 0, 0);
118    T = Context.getObjCObjectPointerType(T);
119    TypeSourceInfo *ClassInfo = Context.getTrivialTypeSourceInfo(T);
120    TypedefDecl *ClassTypedef
121      = TypedefDecl::Create(Context, CurContext, SourceLocation(),
122                            &Context.Idents.get("Class"), ClassInfo);
123    PushOnScopeChains(ClassTypedef, TUScope);
124    Context.setObjCClassType(Context.getTypeDeclType(ClassTypedef));
125    Context.ObjCClassRedefinitionType = Context.getObjCClassType();
126  }
127}
128
129Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
130           bool CompleteTranslationUnit,
131           CodeCompleteConsumer *CodeCompleter)
132  : TheTargetAttributesSema(0),
133    LangOpts(pp.getLangOptions()), PP(pp), Context(ctxt), Consumer(consumer),
134    Diags(PP.getDiagnostics()), SourceMgr(PP.getSourceManager()),
135    ExternalSource(0), CodeCompleter(CodeCompleter), CurContext(0),
136    PackContext(0), VisContext(0), ParsingDeclDepth(0),
137    IdResolver(pp.getLangOptions()), GlobalNewDeleteDeclared(false),
138    CompleteTranslationUnit(CompleteTranslationUnit),
139    NumSFINAEErrors(0), SuppressAccessChecking(false),
140    NonInstantiationEntries(0), CurrentInstantiationScope(0), TyposCorrected(0),
141    AnalysisWarnings(*this)
142{
143  TUScope = 0;
144  if (getLangOptions().CPlusPlus)
145    FieldCollector.reset(new CXXFieldCollector());
146
147  // Tell diagnostics how to render things from the AST library.
148  PP.getDiagnostics().SetArgToStringFn(&FormatASTNodeDiagnosticArgument,
149                                       &Context);
150
151  ExprEvalContexts.push_back(
152                  ExpressionEvaluationContextRecord(PotentiallyEvaluated, 0));
153
154  FunctionScopes.push_back(new FunctionScopeInfo(Diags.getNumErrors()));
155}
156
157void Sema::Initialize() {
158  // Tell the AST consumer about this Sema object.
159  Consumer.Initialize(Context);
160
161  // FIXME: Isn't this redundant with the initialization above?
162  if (SemaConsumer *SC = dyn_cast<SemaConsumer>(&Consumer))
163    SC->InitializeSema(*this);
164
165  // Tell the external Sema source about this Sema object.
166  if (ExternalSemaSource *ExternalSema
167      = dyn_cast_or_null<ExternalSemaSource>(Context.getExternalSource()))
168    ExternalSema->InitializeSema(*this);
169}
170
171Sema::~Sema() {
172  if (PackContext) FreePackedContext();
173  if (VisContext) FreeVisContext();
174  delete TheTargetAttributesSema;
175
176  // Kill all the active scopes.
177  for (unsigned I = 1, E = FunctionScopes.size(); I != E; ++I)
178    delete FunctionScopes[I];
179  if (FunctionScopes.size() == 1)
180    delete FunctionScopes[0];
181
182  // Tell the SemaConsumer to forget about us; we're going out of scope.
183  if (SemaConsumer *SC = dyn_cast<SemaConsumer>(&Consumer))
184    SC->ForgetSema();
185
186  // Detach from the external Sema source.
187  if (ExternalSemaSource *ExternalSema
188        = dyn_cast_or_null<ExternalSemaSource>(Context.getExternalSource()))
189    ExternalSema->ForgetSema();
190}
191
192/// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit cast.
193/// If there is already an implicit cast, merge into the existing one.
194/// The result is of the given category.
195void Sema::ImpCastExprToType(Expr *&Expr, QualType Ty,
196                             CastKind Kind, ExprValueKind VK,
197                             const CXXCastPath *BasePath) {
198  QualType ExprTy = Context.getCanonicalType(Expr->getType());
199  QualType TypeTy = Context.getCanonicalType(Ty);
200
201  if (ExprTy == TypeTy)
202    return;
203
204  if (Expr->getType()->isPointerType() && Ty->isPointerType()) {
205    QualType ExprBaseType = cast<PointerType>(ExprTy)->getPointeeType();
206    QualType BaseType = cast<PointerType>(TypeTy)->getPointeeType();
207    if (ExprBaseType.getAddressSpace() != BaseType.getAddressSpace()) {
208      Diag(Expr->getExprLoc(), diag::err_implicit_pointer_address_space_cast)
209        << Expr->getSourceRange();
210    }
211  }
212
213  // If this is a derived-to-base cast to a through a virtual base, we
214  // need a vtable.
215  if (Kind == CK_DerivedToBase &&
216      BasePathInvolvesVirtualBase(*BasePath)) {
217    QualType T = Expr->getType();
218    if (const PointerType *Pointer = T->getAs<PointerType>())
219      T = Pointer->getPointeeType();
220    if (const RecordType *RecordTy = T->getAs<RecordType>())
221      MarkVTableUsed(Expr->getLocStart(),
222                     cast<CXXRecordDecl>(RecordTy->getDecl()));
223  }
224
225  if (ImplicitCastExpr *ImpCast = dyn_cast<ImplicitCastExpr>(Expr)) {
226    if (ImpCast->getCastKind() == Kind && (!BasePath || BasePath->empty())) {
227      ImpCast->setType(Ty);
228      ImpCast->setValueKind(VK);
229      return;
230    }
231  }
232
233  Expr = ImplicitCastExpr::Create(Context, Ty, Kind, Expr, BasePath, VK);
234}
235
236ExprValueKind Sema::CastCategory(Expr *E) {
237  Expr::Classification Classification = E->Classify(Context);
238  return Classification.isRValue() ? VK_RValue :
239      (Classification.isLValue() ? VK_LValue : VK_XValue);
240}
241
242void Sema::DeleteExpr(ExprTy *E) {
243}
244void Sema::DeleteStmt(StmtTy *S) {
245}
246
247/// \brief Used to prune the decls of Sema's UnusedFileScopedDecls vector.
248static bool ShouldRemoveFromUnused(Sema *SemaRef, const DeclaratorDecl *D) {
249  if (D->isUsed())
250    return true;
251
252  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
253    // UnusedFileScopedDecls stores the first declaration.
254    // The declaration may have become definition so check again.
255    const FunctionDecl *DeclToCheck;
256    if (FD->hasBody(DeclToCheck))
257      return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
258
259    // Later redecls may add new information resulting in not having to warn,
260    // so check again.
261    DeclToCheck = FD->getMostRecentDeclaration();
262    if (DeclToCheck != FD)
263      return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
264  }
265
266  if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
267    // UnusedFileScopedDecls stores the first declaration.
268    // The declaration may have become definition so check again.
269    const VarDecl *DeclToCheck = VD->getDefinition();
270    if (DeclToCheck)
271      return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
272
273    // Later redecls may add new information resulting in not having to warn,
274    // so check again.
275    DeclToCheck = VD->getMostRecentDeclaration();
276    if (DeclToCheck != VD)
277      return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
278  }
279
280  return false;
281}
282
283/// ActOnEndOfTranslationUnit - This is called at the very end of the
284/// translation unit when EOF is reached and all but the top-level scope is
285/// popped.
286void Sema::ActOnEndOfTranslationUnit() {
287  // At PCH writing, implicit instantiations and VTable handling info are
288  // stored and performed when the PCH is included.
289  if (CompleteTranslationUnit)
290    while (1) {
291      // C++: Perform implicit template instantiations.
292      //
293      // FIXME: When we perform these implicit instantiations, we do not
294      // carefully keep track of the point of instantiation (C++ [temp.point]).
295      // This means that name lookup that occurs within the template
296      // instantiation will always happen at the end of the translation unit,
297      // so it will find some names that should not be found. Although this is
298      // common behavior for C++ compilers, it is technically wrong. In the
299      // future, we either need to be able to filter the results of name lookup
300      // or we need to perform template instantiations earlier.
301      PerformPendingInstantiations();
302
303      /// If DefinedUsedVTables ends up marking any virtual member
304      /// functions it might lead to more pending template
305      /// instantiations, which is why we need to loop here.
306      if (!DefineUsedVTables())
307        break;
308    }
309
310  // Remove file scoped decls that turned out to be used.
311  UnusedFileScopedDecls.erase(std::remove_if(UnusedFileScopedDecls.begin(),
312                                             UnusedFileScopedDecls.end(),
313                              std::bind1st(std::ptr_fun(ShouldRemoveFromUnused),
314                                           this)),
315                              UnusedFileScopedDecls.end());
316
317  if (!CompleteTranslationUnit) {
318    TUScope = 0;
319    return;
320  }
321
322  // Check for #pragma weak identifiers that were never declared
323  // FIXME: This will cause diagnostics to be emitted in a non-determinstic
324  // order!  Iterating over a densemap like this is bad.
325  for (llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator
326       I = WeakUndeclaredIdentifiers.begin(),
327       E = WeakUndeclaredIdentifiers.end(); I != E; ++I) {
328    if (I->second.getUsed()) continue;
329
330    Diag(I->second.getLocation(), diag::warn_weak_identifier_undeclared)
331      << I->first;
332  }
333
334  // C99 6.9.2p2:
335  //   A declaration of an identifier for an object that has file
336  //   scope without an initializer, and without a storage-class
337  //   specifier or with the storage-class specifier static,
338  //   constitutes a tentative definition. If a translation unit
339  //   contains one or more tentative definitions for an identifier,
340  //   and the translation unit contains no external definition for
341  //   that identifier, then the behavior is exactly as if the
342  //   translation unit contains a file scope declaration of that
343  //   identifier, with the composite type as of the end of the
344  //   translation unit, with an initializer equal to 0.
345  llvm::SmallSet<VarDecl *, 32> Seen;
346  for (unsigned i = 0, e = TentativeDefinitions.size(); i != e; ++i) {
347    VarDecl *VD = TentativeDefinitions[i]->getActingDefinition();
348
349    // If the tentative definition was completed, getActingDefinition() returns
350    // null. If we've already seen this variable before, insert()'s second
351    // return value is false.
352    if (VD == 0 || VD->isInvalidDecl() || !Seen.insert(VD))
353      continue;
354
355    if (const IncompleteArrayType *ArrayT
356        = Context.getAsIncompleteArrayType(VD->getType())) {
357      if (RequireCompleteType(VD->getLocation(),
358                              ArrayT->getElementType(),
359                              diag::err_tentative_def_incomplete_type_arr)) {
360        VD->setInvalidDecl();
361        continue;
362      }
363
364      // Set the length of the array to 1 (C99 6.9.2p5).
365      Diag(VD->getLocation(), diag::warn_tentative_incomplete_array);
366      llvm::APInt One(Context.getTypeSize(Context.getSizeType()), true);
367      QualType T = Context.getConstantArrayType(ArrayT->getElementType(),
368                                                One, ArrayType::Normal, 0);
369      VD->setType(T);
370    } else if (RequireCompleteType(VD->getLocation(), VD->getType(),
371                                   diag::err_tentative_def_incomplete_type))
372      VD->setInvalidDecl();
373
374    // Notify the consumer that we've completed a tentative definition.
375    if (!VD->isInvalidDecl())
376      Consumer.CompleteTentativeDefinition(VD);
377
378  }
379
380  // Output warning for unused file scoped decls.
381  for (llvm::SmallVectorImpl<const DeclaratorDecl*>::iterator
382         I = UnusedFileScopedDecls.begin(),
383         E = UnusedFileScopedDecls.end(); I != E; ++I) {
384    if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I)) {
385      const FunctionDecl *DiagD;
386      if (!FD->hasBody(DiagD))
387        DiagD = FD;
388      Diag(DiagD->getLocation(),
389           isa<CXXMethodDecl>(DiagD) ? diag::warn_unused_member_function
390                                     : diag::warn_unused_function)
391            << DiagD->getDeclName();
392    } else {
393      const VarDecl *DiagD = cast<VarDecl>(*I)->getDefinition();
394      if (!DiagD)
395        DiagD = cast<VarDecl>(*I);
396      Diag(DiagD->getLocation(), diag::warn_unused_variable)
397            << DiagD->getDeclName();
398    }
399  }
400
401  TUScope = 0;
402}
403
404
405//===----------------------------------------------------------------------===//
406// Helper functions.
407//===----------------------------------------------------------------------===//
408
409DeclContext *Sema::getFunctionLevelDeclContext() {
410  DeclContext *DC = CurContext;
411
412  while (isa<BlockDecl>(DC) || isa<EnumDecl>(DC))
413    DC = DC->getParent();
414
415  return DC;
416}
417
418/// getCurFunctionDecl - If inside of a function body, this returns a pointer
419/// to the function decl for the function being parsed.  If we're currently
420/// in a 'block', this returns the containing context.
421FunctionDecl *Sema::getCurFunctionDecl() {
422  DeclContext *DC = getFunctionLevelDeclContext();
423  return dyn_cast<FunctionDecl>(DC);
424}
425
426ObjCMethodDecl *Sema::getCurMethodDecl() {
427  DeclContext *DC = getFunctionLevelDeclContext();
428  return dyn_cast<ObjCMethodDecl>(DC);
429}
430
431NamedDecl *Sema::getCurFunctionOrMethodDecl() {
432  DeclContext *DC = getFunctionLevelDeclContext();
433  if (isa<ObjCMethodDecl>(DC) || isa<FunctionDecl>(DC))
434    return cast<NamedDecl>(DC);
435  return 0;
436}
437
438Sema::SemaDiagnosticBuilder::~SemaDiagnosticBuilder() {
439  if (!this->Emit())
440    return;
441
442  // If this is not a note, and we're in a template instantiation
443  // that is different from the last template instantiation where
444  // we emitted an error, print a template instantiation
445  // backtrace.
446  if (!SemaRef.Diags.isBuiltinNote(DiagID) &&
447      !SemaRef.ActiveTemplateInstantiations.empty() &&
448      SemaRef.ActiveTemplateInstantiations.back()
449        != SemaRef.LastTemplateInstantiationErrorContext) {
450    SemaRef.PrintInstantiationStack();
451    SemaRef.LastTemplateInstantiationErrorContext
452      = SemaRef.ActiveTemplateInstantiations.back();
453  }
454}
455
456Sema::SemaDiagnosticBuilder Sema::Diag(SourceLocation Loc, unsigned DiagID) {
457  if (isSFINAEContext()) {
458    switch (Diagnostic::getDiagnosticSFINAEResponse(DiagID)) {
459    case Diagnostic::SFINAE_Report:
460      // Fall through; we'll report the diagnostic below.
461      break;
462
463    case Diagnostic::SFINAE_SubstitutionFailure:
464      // Count this failure so that we know that template argument deduction
465      // has failed.
466      ++NumSFINAEErrors;
467      // Fall through
468
469    case Diagnostic::SFINAE_Suppress:
470      // Suppress this diagnostic.
471      Diags.setLastDiagnosticIgnored();
472      return SemaDiagnosticBuilder(*this);
473    }
474  }
475
476  DiagnosticBuilder DB = Diags.Report(FullSourceLoc(Loc, SourceMgr), DiagID);
477  return SemaDiagnosticBuilder(DB, *this, DiagID);
478}
479
480Sema::SemaDiagnosticBuilder
481Sema::Diag(SourceLocation Loc, const PartialDiagnostic& PD) {
482  SemaDiagnosticBuilder Builder(Diag(Loc, PD.getDiagID()));
483  PD.Emit(Builder);
484
485  return Builder;
486}
487
488/// \brief Determines the active Scope associated with the given declaration
489/// context.
490///
491/// This routine maps a declaration context to the active Scope object that
492/// represents that declaration context in the parser. It is typically used
493/// from "scope-less" code (e.g., template instantiation, lazy creation of
494/// declarations) that injects a name for name-lookup purposes and, therefore,
495/// must update the Scope.
496///
497/// \returns The scope corresponding to the given declaraion context, or NULL
498/// if no such scope is open.
499Scope *Sema::getScopeForContext(DeclContext *Ctx) {
500
501  if (!Ctx)
502    return 0;
503
504  Ctx = Ctx->getPrimaryContext();
505  for (Scope *S = getCurScope(); S; S = S->getParent()) {
506    // Ignore scopes that cannot have declarations. This is important for
507    // out-of-line definitions of static class members.
508    if (S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope))
509      if (DeclContext *Entity = static_cast<DeclContext *> (S->getEntity()))
510        if (Ctx == Entity->getPrimaryContext())
511          return S;
512  }
513
514  return 0;
515}
516
517/// \brief Enter a new function scope
518void Sema::PushFunctionScope() {
519  if (FunctionScopes.size() == 1) {
520    // Use the "top" function scope rather than having to allocate
521    // memory for a new scope.
522    FunctionScopes.back()->Clear(getDiagnostics().getNumErrors());
523    FunctionScopes.push_back(FunctionScopes.back());
524    return;
525  }
526
527  FunctionScopes.push_back(
528                      new FunctionScopeInfo(getDiagnostics().getNumErrors()));
529}
530
531void Sema::PushBlockScope(Scope *BlockScope, BlockDecl *Block) {
532  FunctionScopes.push_back(new BlockScopeInfo(getDiagnostics().getNumErrors(),
533                                              BlockScope, Block));
534}
535
536void Sema::PopFunctionOrBlockScope() {
537  FunctionScopeInfo *Scope = FunctionScopes.pop_back_val();
538  assert(!FunctionScopes.empty() && "mismatched push/pop!");
539  if (FunctionScopes.back() != Scope)
540    delete Scope;
541}
542
543/// \brief Determine whether any errors occurred within this function/method/
544/// block.
545bool Sema::hasAnyErrorsInThisFunction() const {
546  return getCurFunction()->NumErrorsAtStartOfFunction
547             != getDiagnostics().getNumErrors();
548}
549
550BlockScopeInfo *Sema::getCurBlock() {
551  if (FunctionScopes.empty())
552    return 0;
553
554  return dyn_cast<BlockScopeInfo>(FunctionScopes.back());
555}
556
557// Pin this vtable to this file.
558ExternalSemaSource::~ExternalSemaSource() {}
559
560void PrettyDeclStackTraceEntry::print(llvm::raw_ostream &OS) const {
561  SourceLocation Loc = this->Loc;
562  if (!Loc.isValid() && TheDecl) Loc = TheDecl->getLocation();
563  if (Loc.isValid()) {
564    Loc.print(OS, S.getSourceManager());
565    OS << ": ";
566  }
567  OS << Message;
568
569  if (TheDecl && isa<NamedDecl>(TheDecl)) {
570    std::string Name = cast<NamedDecl>(TheDecl)->getNameAsString();
571    if (!Name.empty())
572      OS << " '" << Name << '\'';
573  }
574
575  OS << '\n';
576}
577