clang  14.0.0git
DeclBase.h
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1 //===- DeclBase.h - Base Classes for representing declarations --*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines the Decl and DeclContext interfaces.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_AST_DECLBASE_H
14 #define LLVM_CLANG_AST_DECLBASE_H
15 
17 #include "clang/AST/AttrIterator.h"
20 #include "clang/Basic/LLVM.h"
22 #include "clang/Basic/Specifiers.h"
23 #include "llvm/ADT/ArrayRef.h"
24 #include "llvm/ADT/PointerIntPair.h"
25 #include "llvm/ADT/PointerUnion.h"
26 #include "llvm/ADT/iterator.h"
27 #include "llvm/ADT/iterator_range.h"
28 #include "llvm/Support/Casting.h"
29 #include "llvm/Support/Compiler.h"
30 #include "llvm/Support/PrettyStackTrace.h"
31 #include "llvm/Support/VersionTuple.h"
32 #include <algorithm>
33 #include <cassert>
34 #include <cstddef>
35 #include <iterator>
36 #include <string>
37 #include <type_traits>
38 #include <utility>
39 
40 namespace clang {
41 
42 class ASTContext;
43 class ASTMutationListener;
44 class Attr;
45 class BlockDecl;
46 class DeclContext;
47 class ExternalSourceSymbolAttr;
48 class FunctionDecl;
49 class FunctionType;
50 class IdentifierInfo;
51 enum Linkage : unsigned char;
52 class LinkageSpecDecl;
53 class Module;
54 class NamedDecl;
55 class ObjCCategoryDecl;
56 class ObjCCategoryImplDecl;
57 class ObjCContainerDecl;
58 class ObjCImplDecl;
59 class ObjCImplementationDecl;
60 class ObjCInterfaceDecl;
61 class ObjCMethodDecl;
62 class ObjCProtocolDecl;
63 struct PrintingPolicy;
64 class RecordDecl;
65 class SourceManager;
66 class Stmt;
67 class StoredDeclsMap;
68 class TemplateDecl;
69 class TemplateParameterList;
70 class TranslationUnitDecl;
71 class UsingDirectiveDecl;
72 
73 /// Captures the result of checking the availability of a
74 /// declaration.
80 };
81 
82 /// Decl - This represents one declaration (or definition), e.g. a variable,
83 /// typedef, function, struct, etc.
84 ///
85 /// Note: There are objects tacked on before the *beginning* of Decl
86 /// (and its subclasses) in its Decl::operator new(). Proper alignment
87 /// of all subclasses (not requiring more than the alignment of Decl) is
88 /// asserted in DeclBase.cpp.
89 class alignas(8) Decl {
90 public:
91  /// Lists the kind of concrete classes of Decl.
92  enum Kind {
93 #define DECL(DERIVED, BASE) DERIVED,
94 #define ABSTRACT_DECL(DECL)
95 #define DECL_RANGE(BASE, START, END) \
96  first##BASE = START, last##BASE = END,
97 #define LAST_DECL_RANGE(BASE, START, END) \
98  first##BASE = START, last##BASE = END
99 #include "clang/AST/DeclNodes.inc"
100  };
101 
102  /// A placeholder type used to construct an empty shell of a
103  /// decl-derived type that will be filled in later (e.g., by some
104  /// deserialization method).
105  struct EmptyShell {};
106 
107  /// IdentifierNamespace - The different namespaces in which
108  /// declarations may appear. According to C99 6.2.3, there are
109  /// four namespaces, labels, tags, members and ordinary
110  /// identifiers. C++ describes lookup completely differently:
111  /// certain lookups merely "ignore" certain kinds of declarations,
112  /// usually based on whether the declaration is of a type, etc.
113  ///
114  /// These are meant as bitmasks, so that searches in
115  /// C++ can look into the "tag" namespace during ordinary lookup.
116  ///
117  /// Decl currently provides 15 bits of IDNS bits.
119  /// Labels, declared with 'x:' and referenced with 'goto x'.
120  IDNS_Label = 0x0001,
121 
122  /// Tags, declared with 'struct foo;' and referenced with
123  /// 'struct foo'. All tags are also types. This is what
124  /// elaborated-type-specifiers look for in C.
125  /// This also contains names that conflict with tags in the
126  /// same scope but that are otherwise ordinary names (non-type
127  /// template parameters and indirect field declarations).
128  IDNS_Tag = 0x0002,
129 
130  /// Types, declared with 'struct foo', typedefs, etc.
131  /// This is what elaborated-type-specifiers look for in C++,
132  /// but note that it's ill-formed to find a non-tag.
133  IDNS_Type = 0x0004,
134 
135  /// Members, declared with object declarations within tag
136  /// definitions. In C, these can only be found by "qualified"
137  /// lookup in member expressions. In C++, they're found by
138  /// normal lookup.
139  IDNS_Member = 0x0008,
140 
141  /// Namespaces, declared with 'namespace foo {}'.
142  /// Lookup for nested-name-specifiers find these.
143  IDNS_Namespace = 0x0010,
144 
145  /// Ordinary names. In C, everything that's not a label, tag,
146  /// member, or function-local extern ends up here.
147  IDNS_Ordinary = 0x0020,
148 
149  /// Objective C \@protocol.
151 
152  /// This declaration is a friend function. A friend function
153  /// declaration is always in this namespace but may also be in
154  /// IDNS_Ordinary if it was previously declared.
156 
157  /// This declaration is a friend class. A friend class
158  /// declaration is always in this namespace but may also be in
159  /// IDNS_Tag|IDNS_Type if it was previously declared.
160  IDNS_TagFriend = 0x0100,
161 
162  /// This declaration is a using declaration. A using declaration
163  /// *introduces* a number of other declarations into the current
164  /// scope, and those declarations use the IDNS of their targets,
165  /// but the actual using declarations go in this namespace.
166  IDNS_Using = 0x0200,
167 
168  /// This declaration is a C++ operator declared in a non-class
169  /// context. All such operators are also in IDNS_Ordinary.
170  /// C++ lexical operator lookup looks for these.
172 
173  /// This declaration is a function-local extern declaration of a
174  /// variable or function. This may also be IDNS_Ordinary if it
175  /// has been declared outside any function. These act mostly like
176  /// invisible friend declarations, but are also visible to unqualified
177  /// lookup within the scope of the declaring function.
179 
180  /// This declaration is an OpenMP user defined reduction construction.
182 
183  /// This declaration is an OpenMP user defined mapper.
184  IDNS_OMPMapper = 0x2000,
185  };
186 
187  /// ObjCDeclQualifier - 'Qualifiers' written next to the return and
188  /// parameter types in method declarations. Other than remembering
189  /// them and mangling them into the method's signature string, these
190  /// are ignored by the compiler; they are consumed by certain
191  /// remote-messaging frameworks.
192  ///
193  /// in, inout, and out are mutually exclusive and apply only to
194  /// method parameters. bycopy and byref are mutually exclusive and
195  /// apply only to method parameters (?). oneway applies only to
196  /// results. All of these expect their corresponding parameter to
197  /// have a particular type. None of this is currently enforced by
198  /// clang.
199  ///
200  /// This should be kept in sync with ObjCDeclSpec::ObjCDeclQualifier.
203  OBJC_TQ_In = 0x1,
205  OBJC_TQ_Out = 0x4,
209 
210  /// The nullability qualifier is set when the nullability of the
211  /// result or parameter was expressed via a context-sensitive
212  /// keyword.
214  };
215 
216  /// The kind of ownership a declaration has, for visibility purposes.
217  /// This enumeration is designed such that higher values represent higher
218  /// levels of name hiding.
220  /// This declaration is not owned by a module.
221  Unowned,
222 
223  /// This declaration has an owning module, but is globally visible
224  /// (typically because its owning module is visible and we know that
225  /// modules cannot later become hidden in this compilation).
226  /// After serialization and deserialization, this will be converted
227  /// to VisibleWhenImported.
228  Visible,
229 
230  /// This declaration has an owning module, and is visible when that
231  /// module is imported.
233 
234  /// This declaration has an owning module, but is only visible to
235  /// lookups that occur within that module.
237  };
238 
239 protected:
240  /// The next declaration within the same lexical
241  /// DeclContext. These pointers form the linked list that is
242  /// traversed via DeclContext's decls_begin()/decls_end().
243  ///
244  /// The extra two bits are used for the ModuleOwnershipKind.
245  llvm::PointerIntPair<Decl *, 2, ModuleOwnershipKind> NextInContextAndBits;
246 
247 private:
248  friend class DeclContext;
249 
250  struct MultipleDC {
251  DeclContext *SemanticDC;
252  DeclContext *LexicalDC;
253  };
254 
255  /// DeclCtx - Holds either a DeclContext* or a MultipleDC*.
256  /// For declarations that don't contain C++ scope specifiers, it contains
257  /// the DeclContext where the Decl was declared.
258  /// For declarations with C++ scope specifiers, it contains a MultipleDC*
259  /// with the context where it semantically belongs (SemanticDC) and the
260  /// context where it was lexically declared (LexicalDC).
261  /// e.g.:
262  ///
263  /// namespace A {
264  /// void f(); // SemanticDC == LexicalDC == 'namespace A'
265  /// }
266  /// void A::f(); // SemanticDC == namespace 'A'
267  /// // LexicalDC == global namespace
268  llvm::PointerUnion<DeclContext*, MultipleDC*> DeclCtx;
269 
270  bool isInSemaDC() const { return DeclCtx.is<DeclContext*>(); }
271  bool isOutOfSemaDC() const { return DeclCtx.is<MultipleDC*>(); }
272 
273  MultipleDC *getMultipleDC() const {
274  return DeclCtx.get<MultipleDC*>();
275  }
276 
277  DeclContext *getSemanticDC() const {
278  return DeclCtx.get<DeclContext*>();
279  }
280 
281  /// Loc - The location of this decl.
282  SourceLocation Loc;
283 
284  /// DeclKind - This indicates which class this is.
285  unsigned DeclKind : 7;
286 
287  /// InvalidDecl - This indicates a semantic error occurred.
288  unsigned InvalidDecl : 1;
289 
290  /// HasAttrs - This indicates whether the decl has attributes or not.
291  unsigned HasAttrs : 1;
292 
293  /// Implicit - Whether this declaration was implicitly generated by
294  /// the implementation rather than explicitly written by the user.
295  unsigned Implicit : 1;
296 
297  /// Whether this declaration was "used", meaning that a definition is
298  /// required.
299  unsigned Used : 1;
300 
301  /// Whether this declaration was "referenced".
302  /// The difference with 'Used' is whether the reference appears in a
303  /// evaluated context or not, e.g. functions used in uninstantiated templates
304  /// are regarded as "referenced" but not "used".
305  unsigned Referenced : 1;
306 
307  /// Whether this declaration is a top-level declaration (function,
308  /// global variable, etc.) that is lexically inside an objc container
309  /// definition.
310  unsigned TopLevelDeclInObjCContainer : 1;
311 
312  /// Whether statistic collection is enabled.
313  static bool StatisticsEnabled;
314 
315 protected:
316  friend class ASTDeclReader;
317  friend class ASTDeclWriter;
318  friend class ASTNodeImporter;
319  friend class ASTReader;
320  friend class CXXClassMemberWrapper;
321  friend class LinkageComputer;
322  template<typename decl_type> friend class Redeclarable;
323 
324  /// Access - Used by C++ decls for the access specifier.
325  // NOTE: VC++ treats enums as signed, avoid using the AccessSpecifier enum
326  unsigned Access : 2;
327 
328  /// Whether this declaration was loaded from an AST file.
329  unsigned FromASTFile : 1;
330 
331  /// IdentifierNamespace - This specifies what IDNS_* namespace this lives in.
332  unsigned IdentifierNamespace : 14;
333 
334  /// If 0, we have not computed the linkage of this declaration.
335  /// Otherwise, it is the linkage + 1.
336  mutable unsigned CacheValidAndLinkage : 3;
337 
338  /// Allocate memory for a deserialized declaration.
339  ///
340  /// This routine must be used to allocate memory for any declaration that is
341  /// deserialized from a module file.
342  ///
343  /// \param Size The size of the allocated object.
344  /// \param Ctx The context in which we will allocate memory.
345  /// \param ID The global ID of the deserialized declaration.
346  /// \param Extra The amount of extra space to allocate after the object.
347  void *operator new(std::size_t Size, const ASTContext &Ctx, unsigned ID,
348  std::size_t Extra = 0);
349 
350  /// Allocate memory for a non-deserialized declaration.
351  void *operator new(std::size_t Size, const ASTContext &Ctx,
352  DeclContext *Parent, std::size_t Extra = 0);
353 
354 private:
355  bool AccessDeclContextSanity() const;
356 
357  /// Get the module ownership kind to use for a local lexical child of \p DC,
358  /// which may be either a local or (rarely) an imported declaration.
359  static ModuleOwnershipKind getModuleOwnershipKindForChildOf(DeclContext *DC) {
360  if (DC) {
361  auto *D = cast<Decl>(DC);
362  auto MOK = D->getModuleOwnershipKind();
363  if (MOK != ModuleOwnershipKind::Unowned &&
364  (!D->isFromASTFile() || D->hasLocalOwningModuleStorage()))
365  return MOK;
366  // If D is not local and we have no local module storage, then we don't
367  // need to track module ownership at all.
368  }
370  }
371 
372 public:
373  Decl() = delete;
374  Decl(const Decl&) = delete;
375  Decl(Decl &&) = delete;
376  Decl &operator=(const Decl&) = delete;
377  Decl &operator=(Decl&&) = delete;
378 
379 protected:
381  : NextInContextAndBits(nullptr, getModuleOwnershipKindForChildOf(DC)),
382  DeclCtx(DC), Loc(L), DeclKind(DK), InvalidDecl(false), HasAttrs(false),
383  Implicit(false), Used(false), Referenced(false),
384  TopLevelDeclInObjCContainer(false), Access(AS_none), FromASTFile(0),
387  if (StatisticsEnabled) add(DK);
388  }
389 
390  Decl(Kind DK, EmptyShell Empty)
391  : DeclKind(DK), InvalidDecl(false), HasAttrs(false), Implicit(false),
392  Used(false), Referenced(false), TopLevelDeclInObjCContainer(false),
396  if (StatisticsEnabled) add(DK);
397  }
398 
399  virtual ~Decl();
400 
401  /// Update a potentially out-of-date declaration.
402  void updateOutOfDate(IdentifierInfo &II) const;
403 
405  return Linkage(CacheValidAndLinkage - 1);
406  }
407 
408  void setCachedLinkage(Linkage L) const {
409  CacheValidAndLinkage = L + 1;
410  }
411 
412  bool hasCachedLinkage() const {
413  return CacheValidAndLinkage;
414  }
415 
416 public:
417  /// Source range that this declaration covers.
418  virtual SourceRange getSourceRange() const LLVM_READONLY {
419  return SourceRange(getLocation(), getLocation());
420  }
421 
422  SourceLocation getBeginLoc() const LLVM_READONLY {
423  return getSourceRange().getBegin();
424  }
425 
426  SourceLocation getEndLoc() const LLVM_READONLY {
427  return getSourceRange().getEnd();
428  }
429 
430  SourceLocation getLocation() const { return Loc; }
431  void setLocation(SourceLocation L) { Loc = L; }
432 
433  Kind getKind() const { return static_cast<Kind>(DeclKind); }
434  const char *getDeclKindName() const;
435 
436  Decl *getNextDeclInContext() { return NextInContextAndBits.getPointer(); }
437  const Decl *getNextDeclInContext() const {return NextInContextAndBits.getPointer();}
438 
440  if (isInSemaDC())
441  return getSemanticDC();
442  return getMultipleDC()->SemanticDC;
443  }
444  const DeclContext *getDeclContext() const {
445  return const_cast<Decl*>(this)->getDeclContext();
446  }
447 
448  /// Find the innermost non-closure ancestor of this declaration,
449  /// walking up through blocks, lambdas, etc. If that ancestor is
450  /// not a code context (!isFunctionOrMethod()), returns null.
451  ///
452  /// A declaration may be its own non-closure context.
454  const Decl *getNonClosureContext() const {
455  return const_cast<Decl*>(this)->getNonClosureContext();
456  }
457 
460  return const_cast<Decl*>(this)->getTranslationUnitDecl();
461  }
462 
463  bool isInAnonymousNamespace() const;
464 
465  bool isInStdNamespace() const;
466 
467  ASTContext &getASTContext() const LLVM_READONLY;
468 
469  /// Helper to get the language options from the ASTContext.
470  /// Defined out of line to avoid depending on ASTContext.h.
471  const LangOptions &getLangOpts() const LLVM_READONLY;
472 
474  Access = AS;
475  assert(AccessDeclContextSanity());
476  }
477 
479  assert(AccessDeclContextSanity());
480  return AccessSpecifier(Access);
481  }
482 
483  /// Retrieve the access specifier for this declaration, even though
484  /// it may not yet have been properly set.
486  return AccessSpecifier(Access);
487  }
488 
489  bool hasAttrs() const { return HasAttrs; }
490 
491  void setAttrs(const AttrVec& Attrs) {
492  return setAttrsImpl(Attrs, getASTContext());
493  }
494 
496  return const_cast<AttrVec&>(const_cast<const Decl*>(this)->getAttrs());
497  }
498 
499  const AttrVec &getAttrs() const;
500  void dropAttrs();
501  void addAttr(Attr *A);
502 
503  using attr_iterator = AttrVec::const_iterator;
504  using attr_range = llvm::iterator_range<attr_iterator>;
505 
506  attr_range attrs() const {
507  return attr_range(attr_begin(), attr_end());
508  }
509 
511  return hasAttrs() ? getAttrs().begin() : nullptr;
512  }
514  return hasAttrs() ? getAttrs().end() : nullptr;
515  }
516 
517  template <typename T>
518  void dropAttr() {
519  if (!HasAttrs) return;
520 
521  AttrVec &Vec = getAttrs();
522  llvm::erase_if(Vec, [](Attr *A) { return isa<T>(A); });
523 
524  if (Vec.empty())
525  HasAttrs = false;
526  }
527 
528  template <typename T>
529  llvm::iterator_range<specific_attr_iterator<T>> specific_attrs() const {
530  return llvm::make_range(specific_attr_begin<T>(), specific_attr_end<T>());
531  }
532 
533  template <typename T>
536  }
537 
538  template <typename T>
541  }
542 
543  template<typename T> T *getAttr() const {
544  return hasAttrs() ? getSpecificAttr<T>(getAttrs()) : nullptr;
545  }
546 
547  template<typename T> bool hasAttr() const {
548  return hasAttrs() && hasSpecificAttr<T>(getAttrs());
549  }
550 
551  /// getMaxAlignment - return the maximum alignment specified by attributes
552  /// on this decl, 0 if there are none.
553  unsigned getMaxAlignment() const;
554 
555  /// setInvalidDecl - Indicates the Decl had a semantic error. This
556  /// allows for graceful error recovery.
557  void setInvalidDecl(bool Invalid = true);
558  bool isInvalidDecl() const { return (bool) InvalidDecl; }
559 
560  /// isImplicit - Indicates whether the declaration was implicitly
561  /// generated by the implementation. If false, this declaration
562  /// was written explicitly in the source code.
563  bool isImplicit() const { return Implicit; }
564  void setImplicit(bool I = true) { Implicit = I; }
565 
566  /// Whether *any* (re-)declaration of the entity was used, meaning that
567  /// a definition is required.
568  ///
569  /// \param CheckUsedAttr When true, also consider the "used" attribute
570  /// (in addition to the "used" bit set by \c setUsed()) when determining
571  /// whether the function is used.
572  bool isUsed(bool CheckUsedAttr = true) const;
573 
574  /// Set whether the declaration is used, in the sense of odr-use.
575  ///
576  /// This should only be used immediately after creating a declaration.
577  /// It intentionally doesn't notify any listeners.
578  void setIsUsed() { getCanonicalDecl()->Used = true; }
579 
580  /// Mark the declaration used, in the sense of odr-use.
581  ///
582  /// This notifies any mutation listeners in addition to setting a bit
583  /// indicating the declaration is used.
584  void markUsed(ASTContext &C);
585 
586  /// Whether any declaration of this entity was referenced.
587  bool isReferenced() const;
588 
589  /// Whether this declaration was referenced. This should not be relied
590  /// upon for anything other than debugging.
591  bool isThisDeclarationReferenced() const { return Referenced; }
592 
593  void setReferenced(bool R = true) { Referenced = R; }
594 
595  /// Whether this declaration is a top-level declaration (function,
596  /// global variable, etc.) that is lexically inside an objc container
597  /// definition.
599  return TopLevelDeclInObjCContainer;
600  }
601 
602  void setTopLevelDeclInObjCContainer(bool V = true) {
603  TopLevelDeclInObjCContainer = V;
604  }
605 
606  /// Looks on this and related declarations for an applicable
607  /// external source symbol attribute.
608  ExternalSourceSymbolAttr *getExternalSourceSymbolAttr() const;
609 
610  /// Whether this declaration was marked as being private to the
611  /// module in which it was defined.
612  bool isModulePrivate() const {
614  }
615 
616  /// Return true if this declaration has an attribute which acts as
617  /// definition of the entity, such as 'alias' or 'ifunc'.
618  bool hasDefiningAttr() const;
619 
620  /// Return this declaration's defining attribute if it has one.
621  const Attr *getDefiningAttr() const;
622 
623 protected:
624  /// Specify that this declaration was marked as being private
625  /// to the module in which it was defined.
627  // The module-private specifier has no effect on unowned declarations.
628  // FIXME: We should track this in some way for source fidelity.
630  return;
632  }
633 
634 public:
635  /// Set the FromASTFile flag. This indicates that this declaration
636  /// was deserialized and not parsed from source code and enables
637  /// features such as module ownership information.
638  void setFromASTFile() {
639  FromASTFile = true;
640  }
641 
642  /// Set the owning module ID. This may only be called for
643  /// deserialized Decls.
644  void setOwningModuleID(unsigned ID) {
645  assert(isFromASTFile() && "Only works on a deserialized declaration");
646  *((unsigned*)this - 2) = ID;
647  }
648 
649 public:
650  /// Determine the availability of the given declaration.
651  ///
652  /// This routine will determine the most restrictive availability of
653  /// the given declaration (e.g., preferring 'unavailable' to
654  /// 'deprecated').
655  ///
656  /// \param Message If non-NULL and the result is not \c
657  /// AR_Available, will be set to a (possibly empty) message
658  /// describing why the declaration has not been introduced, is
659  /// deprecated, or is unavailable.
660  ///
661  /// \param EnclosingVersion The version to compare with. If empty, assume the
662  /// deployment target version.
663  ///
664  /// \param RealizedPlatform If non-NULL and the availability result is found
665  /// in an available attribute it will set to the platform which is written in
666  /// the available attribute.
668  getAvailability(std::string *Message = nullptr,
669  VersionTuple EnclosingVersion = VersionTuple(),
670  StringRef *RealizedPlatform = nullptr) const;
671 
672  /// Retrieve the version of the target platform in which this
673  /// declaration was introduced.
674  ///
675  /// \returns An empty version tuple if this declaration has no 'introduced'
676  /// availability attributes, or the version tuple that's specified in the
677  /// attribute otherwise.
678  VersionTuple getVersionIntroduced() const;
679 
680  /// Determine whether this declaration is marked 'deprecated'.
681  ///
682  /// \param Message If non-NULL and the declaration is deprecated,
683  /// this will be set to the message describing why the declaration
684  /// was deprecated (which may be empty).
685  bool isDeprecated(std::string *Message = nullptr) const {
686  return getAvailability(Message) == AR_Deprecated;
687  }
688 
689  /// Determine whether this declaration is marked 'unavailable'.
690  ///
691  /// \param Message If non-NULL and the declaration is unavailable,
692  /// this will be set to the message describing why the declaration
693  /// was made unavailable (which may be empty).
694  bool isUnavailable(std::string *Message = nullptr) const {
695  return getAvailability(Message) == AR_Unavailable;
696  }
697 
698  /// Determine whether this is a weak-imported symbol.
699  ///
700  /// Weak-imported symbols are typically marked with the
701  /// 'weak_import' attribute, but may also be marked with an
702  /// 'availability' attribute where we're targing a platform prior to
703  /// the introduction of this feature.
704  bool isWeakImported() const;
705 
706  /// Determines whether this symbol can be weak-imported,
707  /// e.g., whether it would be well-formed to add the weak_import
708  /// attribute.
709  ///
710  /// \param IsDefinition Set to \c true to indicate that this
711  /// declaration cannot be weak-imported because it has a definition.
712  bool canBeWeakImported(bool &IsDefinition) const;
713 
714  /// Determine whether this declaration came from an AST file (such as
715  /// a precompiled header or module) rather than having been parsed.
716  bool isFromASTFile() const { return FromASTFile; }
717 
718  /// Retrieve the global declaration ID associated with this
719  /// declaration, which specifies where this Decl was loaded from.
720  unsigned getGlobalID() const {
721  if (isFromASTFile())
722  return *((const unsigned*)this - 1);
723  return 0;
724  }
725 
726  /// Retrieve the global ID of the module that owns this particular
727  /// declaration.
728  unsigned getOwningModuleID() const {
729  if (isFromASTFile())
730  return *((const unsigned*)this - 2);
731  return 0;
732  }
733 
734 private:
735  Module *getOwningModuleSlow() const;
736 
737 protected:
738  bool hasLocalOwningModuleStorage() const;
739 
740 public:
741  /// Get the imported owning module, if this decl is from an imported
742  /// (non-local) module.
744  if (!isFromASTFile() || !hasOwningModule())
745  return nullptr;
746 
747  return getOwningModuleSlow();
748  }
749 
750  /// Get the local owning module, if known. Returns nullptr if owner is
751  /// not yet known or declaration is not from a module.
753  if (isFromASTFile() || !hasOwningModule())
754  return nullptr;
755 
756  assert(hasLocalOwningModuleStorage() &&
757  "owned local decl but no local module storage");
758  return reinterpret_cast<Module *const *>(this)[-1];
759  }
761  assert(!isFromASTFile() && hasOwningModule() &&
763  "should not have a cached owning module");
764  reinterpret_cast<Module **>(this)[-1] = M;
765  }
766 
767  /// Is this declaration owned by some module?
768  bool hasOwningModule() const {
770  }
771 
772  /// Get the module that owns this declaration (for visibility purposes).
775  }
776 
777  /// Get the module that owns this declaration for linkage purposes.
778  /// There only ever is such a module under the C++ Modules TS.
779  ///
780  /// \param IgnoreLinkage Ignore the linkage of the entity; assume that
781  /// all declarations in a global module fragment are unowned.
782  Module *getOwningModuleForLinkage(bool IgnoreLinkage = false) const;
783 
784  /// Determine whether this declaration is definitely visible to name lookup,
785  /// independent of whether the owning module is visible.
786  /// Note: The declaration may be visible even if this returns \c false if the
787  /// owning module is visible within the query context. This is a low-level
788  /// helper function; most code should be calling Sema::isVisible() instead.
791  }
792 
793  /// Set that this declaration is globally visible, even if it came from a
794  /// module that is not visible.
798  }
799 
800  /// Get the kind of module ownership for this declaration.
802  return NextInContextAndBits.getInt();
803  }
804 
805  /// Set whether this declaration is hidden from name lookup.
810  "no storage available for owning module for this declaration");
811  NextInContextAndBits.setInt(MOK);
812  }
813 
814  unsigned getIdentifierNamespace() const {
815  return IdentifierNamespace;
816  }
817 
818  bool isInIdentifierNamespace(unsigned NS) const {
819  return getIdentifierNamespace() & NS;
820  }
821 
822  static unsigned getIdentifierNamespaceForKind(Kind DK);
823 
826  }
827 
828  static bool isTagIdentifierNamespace(unsigned NS) {
829  // TagDecls have Tag and Type set and may also have TagFriend.
830  return (NS & ~IDNS_TagFriend) == (IDNS_Tag | IDNS_Type);
831  }
832 
833  /// getLexicalDeclContext - The declaration context where this Decl was
834  /// lexically declared (LexicalDC). May be different from
835  /// getDeclContext() (SemanticDC).
836  /// e.g.:
837  ///
838  /// namespace A {
839  /// void f(); // SemanticDC == LexicalDC == 'namespace A'
840  /// }
841  /// void A::f(); // SemanticDC == namespace 'A'
842  /// // LexicalDC == global namespace
844  if (isInSemaDC())
845  return getSemanticDC();
846  return getMultipleDC()->LexicalDC;
847  }
849  return const_cast<Decl*>(this)->getLexicalDeclContext();
850  }
851 
852  /// Determine whether this declaration is declared out of line (outside its
853  /// semantic context).
854  virtual bool isOutOfLine() const;
855 
856  /// setDeclContext - Set both the semantic and lexical DeclContext
857  /// to DC.
858  void setDeclContext(DeclContext *DC);
859 
861 
862  /// Determine whether this declaration is a templated entity (whether it is
863  // within the scope of a template parameter).
864  bool isTemplated() const;
865 
866  /// Determine the number of levels of template parameter surrounding this
867  /// declaration.
868  unsigned getTemplateDepth() const;
869 
870  /// isDefinedOutsideFunctionOrMethod - This predicate returns true if this
871  /// scoped decl is defined outside the current function or method. This is
872  /// roughly global variables and functions, but also handles enums (which
873  /// could be defined inside or outside a function etc).
875  return getParentFunctionOrMethod() == nullptr;
876  }
877 
878  /// Determine whether a substitution into this declaration would occur as
879  /// part of a substitution into a dependent local scope. Such a substitution
880  /// transitively substitutes into all constructs nested within this
881  /// declaration.
882  ///
883  /// This recognizes non-defining declarations as well as members of local
884  /// classes and lambdas:
885  /// \code
886  /// template<typename T> void foo() { void bar(); }
887  /// template<typename T> void foo2() { class ABC { void bar(); }; }
888  /// template<typename T> inline int x = [](){ return 0; }();
889  /// \endcode
890  bool isInLocalScopeForInstantiation() const;
891 
892  /// If this decl is defined inside a function/method/block it returns
893  /// the corresponding DeclContext, otherwise it returns null.
894  const DeclContext *getParentFunctionOrMethod() const;
896  return const_cast<DeclContext*>(
897  const_cast<const Decl*>(this)->getParentFunctionOrMethod());
898  }
899 
900  /// Retrieves the "canonical" declaration of the given declaration.
901  virtual Decl *getCanonicalDecl() { return this; }
902  const Decl *getCanonicalDecl() const {
903  return const_cast<Decl*>(this)->getCanonicalDecl();
904  }
905 
906  /// Whether this particular Decl is a canonical one.
907  bool isCanonicalDecl() const { return getCanonicalDecl() == this; }
908 
909 protected:
910  /// Returns the next redeclaration or itself if this is the only decl.
911  ///
912  /// Decl subclasses that can be redeclared should override this method so that
913  /// Decl::redecl_iterator can iterate over them.
914  virtual Decl *getNextRedeclarationImpl() { return this; }
915 
916  /// Implementation of getPreviousDecl(), to be overridden by any
917  /// subclass that has a redeclaration chain.
918  virtual Decl *getPreviousDeclImpl() { return nullptr; }
919 
920  /// Implementation of getMostRecentDecl(), to be overridden by any
921  /// subclass that has a redeclaration chain.
922  virtual Decl *getMostRecentDeclImpl() { return this; }
923 
924 public:
925  /// Iterates through all the redeclarations of the same decl.
927  /// Current - The current declaration.
928  Decl *Current = nullptr;
929  Decl *Starter;
930 
931  public:
932  using value_type = Decl *;
933  using reference = const value_type &;
934  using pointer = const value_type *;
935  using iterator_category = std::forward_iterator_tag;
937 
938  redecl_iterator() = default;
939  explicit redecl_iterator(Decl *C) : Current(C), Starter(C) {}
940 
941  reference operator*() const { return Current; }
942  value_type operator->() const { return Current; }
943 
945  assert(Current && "Advancing while iterator has reached end");
946  // Get either previous decl or latest decl.
947  Decl *Next = Current->getNextRedeclarationImpl();
948  assert(Next && "Should return next redeclaration or itself, never null!");
949  Current = (Next != Starter) ? Next : nullptr;
950  return *this;
951  }
952 
954  redecl_iterator tmp(*this);
955  ++(*this);
956  return tmp;
957  }
958 
960  return x.Current == y.Current;
961  }
962 
964  return x.Current != y.Current;
965  }
966  };
967 
968  using redecl_range = llvm::iterator_range<redecl_iterator>;
969 
970  /// Returns an iterator range for all the redeclarations of the same
971  /// decl. It will iterate at least once (when this decl is the only one).
974  }
975 
977  return redecl_iterator(const_cast<Decl *>(this));
978  }
979 
981 
982  /// Retrieve the previous declaration that declares the same entity
983  /// as this declaration, or NULL if there is no previous declaration.
985 
986  /// Retrieve the previous declaration that declares the same entity
987  /// as this declaration, or NULL if there is no previous declaration.
988  const Decl *getPreviousDecl() const {
989  return const_cast<Decl *>(this)->getPreviousDeclImpl();
990  }
991 
992  /// True if this is the first declaration in its redeclaration chain.
993  bool isFirstDecl() const {
994  return getPreviousDecl() == nullptr;
995  }
996 
997  /// Retrieve the most recent declaration that declares the same entity
998  /// as this declaration (which may be this declaration).
1000 
1001  /// Retrieve the most recent declaration that declares the same entity
1002  /// as this declaration (which may be this declaration).
1003  const Decl *getMostRecentDecl() const {
1004  return const_cast<Decl *>(this)->getMostRecentDeclImpl();
1005  }
1006 
1007  /// getBody - If this Decl represents a declaration for a body of code,
1008  /// such as a function or method definition, this method returns the
1009  /// top-level Stmt* of that body. Otherwise this method returns null.
1010  virtual Stmt* getBody() const { return nullptr; }
1011 
1012  /// Returns true if this \c Decl represents a declaration for a body of
1013  /// code, such as a function or method definition.
1014  /// Note that \c hasBody can also return true if any redeclaration of this
1015  /// \c Decl represents a declaration for a body of code.
1016  virtual bool hasBody() const { return getBody() != nullptr; }
1017 
1018  /// getBodyRBrace - Gets the right brace of the body, if a body exists.
1019  /// This works whether the body is a CompoundStmt or a CXXTryStmt.
1020  SourceLocation getBodyRBrace() const;
1021 
1022  // global temp stats (until we have a per-module visitor)
1023  static void add(Kind k);
1024  static void EnableStatistics();
1025  static void PrintStats();
1026 
1027  /// isTemplateParameter - Determines whether this declaration is a
1028  /// template parameter.
1029  bool isTemplateParameter() const;
1030 
1031  /// isTemplateParameter - Determines whether this declaration is a
1032  /// template parameter pack.
1033  bool isTemplateParameterPack() const;
1034 
1035  /// Whether this declaration is a parameter pack.
1036  bool isParameterPack() const;
1037 
1038  /// returns true if this declaration is a template
1039  bool isTemplateDecl() const;
1040 
1041  /// Whether this declaration is a function or function template.
1043  return (DeclKind >= Decl::firstFunction &&
1044  DeclKind <= Decl::lastFunction) ||
1045  DeclKind == FunctionTemplate;
1046  }
1047 
1048  /// If this is a declaration that describes some template, this
1049  /// method returns that template declaration.
1050  ///
1051  /// Note that this returns nullptr for partial specializations, because they
1052  /// are not modeled as TemplateDecls. Use getDescribedTemplateParams to handle
1053  /// those cases.
1055 
1056  /// If this is a declaration that describes some template or partial
1057  /// specialization, this returns the corresponding template parameter list.
1059 
1060  /// Returns the function itself, or the templated function if this is a
1061  /// function template.
1062  FunctionDecl *getAsFunction() LLVM_READONLY;
1063 
1064  const FunctionDecl *getAsFunction() const {
1065  return const_cast<Decl *>(this)->getAsFunction();
1066  }
1067 
1068  /// Changes the namespace of this declaration to reflect that it's
1069  /// a function-local extern declaration.
1070  ///
1071  /// These declarations appear in the lexical context of the extern
1072  /// declaration, but in the semantic context of the enclosing namespace
1073  /// scope.
1075  Decl *Prev = getPreviousDecl();
1077 
1078  // It's OK for the declaration to still have the "invisible friend" flag or
1079  // the "conflicts with tag declarations in this scope" flag for the outer
1080  // scope.
1081  assert((IdentifierNamespace & ~(IDNS_OrdinaryFriend | IDNS_Tag)) == 0 &&
1082  "namespace is not ordinary");
1083 
1085  if (Prev && Prev->getIdentifierNamespace() & IDNS_Ordinary)
1087  }
1088 
1089  /// Determine whether this is a block-scope declaration with linkage.
1090  /// This will either be a local variable declaration declared 'extern', or a
1091  /// local function declaration.
1094  }
1095 
1096  /// Changes the namespace of this declaration to reflect that it's
1097  /// the object of a friend declaration.
1098  ///
1099  /// These declarations appear in the lexical context of the friending
1100  /// class, but in the semantic context of the actual entity. This property
1101  /// applies only to a specific decl object; other redeclarations of the
1102  /// same entity may not (and probably don't) share this property.
1103  void setObjectOfFriendDecl(bool PerformFriendInjection = false) {
1104  unsigned OldNS = IdentifierNamespace;
1105  assert((OldNS & (IDNS_Tag | IDNS_Ordinary |
1108  "namespace includes neither ordinary nor tag");
1109  assert(!(OldNS & ~(IDNS_Tag | IDNS_Ordinary | IDNS_Type |
1112  "namespace includes other than ordinary or tag");
1113 
1114  Decl *Prev = getPreviousDecl();
1116 
1117  if (OldNS & (IDNS_Tag | IDNS_TagFriend)) {
1119  if (PerformFriendInjection ||
1120  (Prev && Prev->getIdentifierNamespace() & IDNS_Tag))
1122  }
1123 
1124  if (OldNS & (IDNS_Ordinary | IDNS_OrdinaryFriend |
1127  if (PerformFriendInjection ||
1128  (Prev && Prev->getIdentifierNamespace() & IDNS_Ordinary))
1130  }
1131  }
1132 
1134  FOK_None, ///< Not a friend object.
1135  FOK_Declared, ///< A friend of a previously-declared entity.
1136  FOK_Undeclared ///< A friend of a previously-undeclared entity.
1137  };
1138 
1139  /// Determines whether this declaration is the object of a
1140  /// friend declaration and, if so, what kind.
1141  ///
1142  /// There is currently no direct way to find the associated FriendDecl.
1144  unsigned mask =
1146  if (!mask) return FOK_None;
1148  : FOK_Undeclared);
1149  }
1150 
1151  /// Specifies that this declaration is a C++ overloaded non-member.
1153  assert(getKind() == Function || getKind() == FunctionTemplate);
1154  assert((IdentifierNamespace & IDNS_Ordinary) &&
1155  "visible non-member operators should be in ordinary namespace");
1157  }
1158 
1159  static bool classofKind(Kind K) { return true; }
1160  static DeclContext *castToDeclContext(const Decl *);
1161  static Decl *castFromDeclContext(const DeclContext *);
1162 
1163  void print(raw_ostream &Out, unsigned Indentation = 0,
1164  bool PrintInstantiation = false) const;
1165  void print(raw_ostream &Out, const PrintingPolicy &Policy,
1166  unsigned Indentation = 0, bool PrintInstantiation = false) const;
1167  static void printGroup(Decl** Begin, unsigned NumDecls,
1168  raw_ostream &Out, const PrintingPolicy &Policy,
1169  unsigned Indentation = 0);
1170 
1171  // Debuggers don't usually respect default arguments.
1172  void dump() const;
1173 
1174  // Same as dump(), but forces color printing.
1175  void dumpColor() const;
1176 
1177  void dump(raw_ostream &Out, bool Deserialize = false,
1178  ASTDumpOutputFormat OutputFormat = ADOF_Default) const;
1179 
1180  /// \return Unique reproducible object identifier
1181  int64_t getID() const;
1182 
1183  /// Looks through the Decl's underlying type to extract a FunctionType
1184  /// when possible. Will return null if the type underlying the Decl does not
1185  /// have a FunctionType.
1186  const FunctionType *getFunctionType(bool BlocksToo = true) const;
1187 
1188 private:
1189  void setAttrsImpl(const AttrVec& Attrs, ASTContext &Ctx);
1190  void setDeclContextsImpl(DeclContext *SemaDC, DeclContext *LexicalDC,
1191  ASTContext &Ctx);
1192 
1193 protected:
1195 };
1196 
1197 /// Determine whether two declarations declare the same entity.
1198 inline bool declaresSameEntity(const Decl *D1, const Decl *D2) {
1199  if (!D1 || !D2)
1200  return false;
1201 
1202  if (D1 == D2)
1203  return true;
1204 
1205  return D1->getCanonicalDecl() == D2->getCanonicalDecl();
1206 }
1207 
1208 /// PrettyStackTraceDecl - If a crash occurs, indicate that it happened when
1209 /// doing something to a specific decl.
1210 class PrettyStackTraceDecl : public llvm::PrettyStackTraceEntry {
1211  const Decl *TheDecl;
1212  SourceLocation Loc;
1213  SourceManager &SM;
1214  const char *Message;
1215 
1216 public:
1218  SourceManager &sm, const char *Msg)
1219  : TheDecl(theDecl), Loc(L), SM(sm), Message(Msg) {}
1220 
1221  void print(raw_ostream &OS) const override;
1222 };
1223 } // namespace clang
1224 
1225 // Required to determine the layout of the PointerUnion<NamedDecl*> before
1226 // seeing the NamedDecl definition being first used in DeclListNode::operator*.
1227 namespace llvm {
1228  template <> struct PointerLikeTypeTraits<::clang::NamedDecl *> {
1229  static inline void *getAsVoidPointer(::clang::NamedDecl *P) { return P; }
1230  static inline ::clang::NamedDecl *getFromVoidPointer(void *P) {
1231  return static_cast<::clang::NamedDecl *>(P);
1232  }
1233  static constexpr int NumLowBitsAvailable = 3;
1234  };
1235 }
1236 
1237 namespace clang {
1238 /// A list storing NamedDecls in the lookup tables.
1240  friend class ASTContext; // allocate, deallocate nodes.
1241  friend class StoredDeclsList;
1242 public:
1243  using Decls = llvm::PointerUnion<NamedDecl*, DeclListNode*>;
1244  class iterator {
1246  friend class StoredDeclsList;
1247 
1248  Decls Ptr;
1249  iterator(Decls Node) : Ptr(Node) { }
1250  public:
1253  using pointer = void;
1255  using iterator_category = std::forward_iterator_tag;
1256 
1257  iterator() = default;
1258 
1260  assert(Ptr && "dereferencing end() iterator");
1261  if (DeclListNode *CurNode = Ptr.dyn_cast<DeclListNode*>())
1262  return CurNode->D;
1263  return Ptr.get<NamedDecl*>();
1264  }
1265  void operator->() const { } // Unsupported.
1266  bool operator==(const iterator &X) const { return Ptr == X.Ptr; }
1267  bool operator!=(const iterator &X) const { return Ptr != X.Ptr; }
1268  inline iterator &operator++() { // ++It
1269  assert(!Ptr.isNull() && "Advancing empty iterator");
1270 
1271  if (DeclListNode *CurNode = Ptr.dyn_cast<DeclListNode*>())
1272  Ptr = CurNode->Rest;
1273  else
1274  Ptr = nullptr;
1275  return *this;
1276  }
1277  iterator operator++(int) { // It++
1278  iterator temp = *this;
1279  ++(*this);
1280  return temp;
1281  }
1282  // Enables the pattern for (iterator I =..., E = I.end(); I != E; ++I)
1283  iterator end() { return iterator(); }
1284  };
1285 private:
1286  NamedDecl *D = nullptr;
1287  Decls Rest = nullptr;
1288  DeclListNode(NamedDecl *ND) : D(ND) {}
1289 };
1290 
1291 /// The results of name lookup within a DeclContext.
1293  using Decls = DeclListNode::Decls;
1294 
1295  /// When in collection form, this is what the Data pointer points to.
1296  Decls Result;
1297 
1298 public:
1299  DeclContextLookupResult() = default;
1300  DeclContextLookupResult(Decls Result) : Result(Result) {}
1301 
1305 
1306  iterator begin() { return iterator(Result); }
1307  iterator end() { return iterator(); }
1309  return const_cast<DeclContextLookupResult*>(this)->begin();
1310  }
1311  const_iterator end() const { return iterator(); }
1312 
1313  bool empty() const { return Result.isNull(); }
1314  bool isSingleResult() const { return Result.dyn_cast<NamedDecl*>(); }
1315  reference front() const { return *begin(); }
1316 
1317  // Find the first declaration of the given type in the list. Note that this
1318  // is not in general the earliest-declared declaration, and should only be
1319  // used when it's not possible for there to be more than one match or where
1320  // it doesn't matter which one is found.
1321  template<class T> T *find_first() const {
1322  for (auto *D : *this)
1323  if (T *Decl = dyn_cast<T>(D))
1324  return Decl;
1325 
1326  return nullptr;
1327  }
1328 };
1329 
1330 /// DeclContext - This is used only as base class of specific decl types that
1331 /// can act as declaration contexts. These decls are (only the top classes
1332 /// that directly derive from DeclContext are mentioned, not their subclasses):
1333 ///
1334 /// TranslationUnitDecl
1335 /// ExternCContext
1336 /// NamespaceDecl
1337 /// TagDecl
1338 /// OMPDeclareReductionDecl
1339 /// OMPDeclareMapperDecl
1340 /// FunctionDecl
1341 /// ObjCMethodDecl
1342 /// ObjCContainerDecl
1343 /// LinkageSpecDecl
1344 /// ExportDecl
1345 /// BlockDecl
1346 /// CapturedDecl
1348  /// For makeDeclVisibleInContextImpl
1349  friend class ASTDeclReader;
1350  /// For reconcileExternalVisibleStorage, CreateStoredDeclsMap,
1351  /// hasNeedToReconcileExternalVisibleStorage
1352  friend class ExternalASTSource;
1353  /// For CreateStoredDeclsMap
1354  friend class DependentDiagnostic;
1355  /// For hasNeedToReconcileExternalVisibleStorage,
1356  /// hasLazyLocalLexicalLookups, hasLazyExternalLexicalLookups
1357  friend class ASTWriter;
1358 
1359  // We use uint64_t in the bit-fields below since some bit-fields
1360  // cross the unsigned boundary and this breaks the packing.
1361 
1362  /// Stores the bits used by DeclContext.
1363  /// If modified NumDeclContextBit, the ctor of DeclContext and the accessor
1364  /// methods in DeclContext should be updated appropriately.
1365  class DeclContextBitfields {
1366  friend class DeclContext;
1367  /// DeclKind - This indicates which class this is.
1368  uint64_t DeclKind : 7;
1369 
1370  /// Whether this declaration context also has some external
1371  /// storage that contains additional declarations that are lexically
1372  /// part of this context.
1373  mutable uint64_t ExternalLexicalStorage : 1;
1374 
1375  /// Whether this declaration context also has some external
1376  /// storage that contains additional declarations that are visible
1377  /// in this context.
1378  mutable uint64_t ExternalVisibleStorage : 1;
1379 
1380  /// Whether this declaration context has had externally visible
1381  /// storage added since the last lookup. In this case, \c LookupPtr's
1382  /// invariant may not hold and needs to be fixed before we perform
1383  /// another lookup.
1384  mutable uint64_t NeedToReconcileExternalVisibleStorage : 1;
1385 
1386  /// If \c true, this context may have local lexical declarations
1387  /// that are missing from the lookup table.
1388  mutable uint64_t HasLazyLocalLexicalLookups : 1;
1389 
1390  /// If \c true, the external source may have lexical declarations
1391  /// that are missing from the lookup table.
1392  mutable uint64_t HasLazyExternalLexicalLookups : 1;
1393 
1394  /// If \c true, lookups should only return identifier from
1395  /// DeclContext scope (for example TranslationUnit). Used in
1396  /// LookupQualifiedName()
1397  mutable uint64_t UseQualifiedLookup : 1;
1398  };
1399 
1400  /// Number of bits in DeclContextBitfields.
1401  enum { NumDeclContextBits = 13 };
1402 
1403  /// Stores the bits used by TagDecl.
1404  /// If modified NumTagDeclBits and the accessor
1405  /// methods in TagDecl should be updated appropriately.
1406  class TagDeclBitfields {
1407  friend class TagDecl;
1408  /// For the bits in DeclContextBitfields
1409  uint64_t : NumDeclContextBits;
1410 
1411  /// The TagKind enum.
1412  uint64_t TagDeclKind : 3;
1413 
1414  /// True if this is a definition ("struct foo {};"), false if it is a
1415  /// declaration ("struct foo;"). It is not considered a definition
1416  /// until the definition has been fully processed.
1417  uint64_t IsCompleteDefinition : 1;
1418 
1419  /// True if this is currently being defined.
1420  uint64_t IsBeingDefined : 1;
1421 
1422  /// True if this tag declaration is "embedded" (i.e., defined or declared
1423  /// for the very first time) in the syntax of a declarator.
1424  uint64_t IsEmbeddedInDeclarator : 1;
1425 
1426  /// True if this tag is free standing, e.g. "struct foo;".
1427  uint64_t IsFreeStanding : 1;
1428 
1429  /// Indicates whether it is possible for declarations of this kind
1430  /// to have an out-of-date definition.
1431  ///
1432  /// This option is only enabled when modules are enabled.
1433  uint64_t MayHaveOutOfDateDef : 1;
1434 
1435  /// Has the full definition of this type been required by a use somewhere in
1436  /// the TU.
1437  uint64_t IsCompleteDefinitionRequired : 1;
1438  };
1439 
1440  /// Number of non-inherited bits in TagDeclBitfields.
1441  enum { NumTagDeclBits = 9 };
1442 
1443  /// Stores the bits used by EnumDecl.
1444  /// If modified NumEnumDeclBit and the accessor
1445  /// methods in EnumDecl should be updated appropriately.
1446  class EnumDeclBitfields {
1447  friend class EnumDecl;
1448  /// For the bits in DeclContextBitfields.
1449  uint64_t : NumDeclContextBits;
1450  /// For the bits in TagDeclBitfields.
1451  uint64_t : NumTagDeclBits;
1452 
1453  /// Width in bits required to store all the non-negative
1454  /// enumerators of this enum.
1455  uint64_t NumPositiveBits : 8;
1456 
1457  /// Width in bits required to store all the negative
1458  /// enumerators of this enum.
1459  uint64_t NumNegativeBits : 8;
1460 
1461  /// True if this tag declaration is a scoped enumeration. Only
1462  /// possible in C++11 mode.
1463  uint64_t IsScoped : 1;
1464 
1465  /// If this tag declaration is a scoped enum,
1466  /// then this is true if the scoped enum was declared using the class
1467  /// tag, false if it was declared with the struct tag. No meaning is
1468  /// associated if this tag declaration is not a scoped enum.
1469  uint64_t IsScopedUsingClassTag : 1;
1470 
1471  /// True if this is an enumeration with fixed underlying type. Only
1472  /// possible in C++11, Microsoft extensions, or Objective C mode.
1473  uint64_t IsFixed : 1;
1474 
1475  /// True if a valid hash is stored in ODRHash.
1476  uint64_t HasODRHash : 1;
1477  };
1478 
1479  /// Number of non-inherited bits in EnumDeclBitfields.
1480  enum { NumEnumDeclBits = 20 };
1481 
1482  /// Stores the bits used by RecordDecl.
1483  /// If modified NumRecordDeclBits and the accessor
1484  /// methods in RecordDecl should be updated appropriately.
1485  class RecordDeclBitfields {
1486  friend class RecordDecl;
1487  /// For the bits in DeclContextBitfields.
1488  uint64_t : NumDeclContextBits;
1489  /// For the bits in TagDeclBitfields.
1490  uint64_t : NumTagDeclBits;
1491 
1492  /// This is true if this struct ends with a flexible
1493  /// array member (e.g. int X[]) or if this union contains a struct that does.
1494  /// If so, this cannot be contained in arrays or other structs as a member.
1495  uint64_t HasFlexibleArrayMember : 1;
1496 
1497  /// Whether this is the type of an anonymous struct or union.
1498  uint64_t AnonymousStructOrUnion : 1;
1499 
1500  /// This is true if this struct has at least one member
1501  /// containing an Objective-C object pointer type.
1502  uint64_t HasObjectMember : 1;
1503 
1504  /// This is true if struct has at least one member of
1505  /// 'volatile' type.
1506  uint64_t HasVolatileMember : 1;
1507 
1508  /// Whether the field declarations of this record have been loaded
1509  /// from external storage. To avoid unnecessary deserialization of
1510  /// methods/nested types we allow deserialization of just the fields
1511  /// when needed.
1512  mutable uint64_t LoadedFieldsFromExternalStorage : 1;
1513 
1514  /// Basic properties of non-trivial C structs.
1515  uint64_t NonTrivialToPrimitiveDefaultInitialize : 1;
1516  uint64_t NonTrivialToPrimitiveCopy : 1;
1517  uint64_t NonTrivialToPrimitiveDestroy : 1;
1518 
1519  /// The following bits indicate whether this is or contains a C union that
1520  /// is non-trivial to default-initialize, destruct, or copy. These bits
1521  /// imply the associated basic non-triviality predicates declared above.
1522  uint64_t HasNonTrivialToPrimitiveDefaultInitializeCUnion : 1;
1523  uint64_t HasNonTrivialToPrimitiveDestructCUnion : 1;
1524  uint64_t HasNonTrivialToPrimitiveCopyCUnion : 1;
1525 
1526  /// Indicates whether this struct is destroyed in the callee.
1527  uint64_t ParamDestroyedInCallee : 1;
1528 
1529  /// Represents the way this type is passed to a function.
1530  uint64_t ArgPassingRestrictions : 2;
1531  };
1532 
1533  /// Number of non-inherited bits in RecordDeclBitfields.
1534  enum { NumRecordDeclBits = 14 };
1535 
1536  /// Stores the bits used by OMPDeclareReductionDecl.
1537  /// If modified NumOMPDeclareReductionDeclBits and the accessor
1538  /// methods in OMPDeclareReductionDecl should be updated appropriately.
1539  class OMPDeclareReductionDeclBitfields {
1540  friend class OMPDeclareReductionDecl;
1541  /// For the bits in DeclContextBitfields
1542  uint64_t : NumDeclContextBits;
1543 
1544  /// Kind of initializer,
1545  /// function call or omp_priv<init_expr> initializtion.
1546  uint64_t InitializerKind : 2;
1547  };
1548 
1549  /// Number of non-inherited bits in OMPDeclareReductionDeclBitfields.
1550  enum { NumOMPDeclareReductionDeclBits = 2 };
1551 
1552  /// Stores the bits used by FunctionDecl.
1553  /// If modified NumFunctionDeclBits and the accessor
1554  /// methods in FunctionDecl and CXXDeductionGuideDecl
1555  /// (for IsCopyDeductionCandidate) should be updated appropriately.
1556  class FunctionDeclBitfields {
1557  friend class FunctionDecl;
1558  /// For IsCopyDeductionCandidate
1559  friend class CXXDeductionGuideDecl;
1560  /// For the bits in DeclContextBitfields.
1561  uint64_t : NumDeclContextBits;
1562 
1563  uint64_t SClass : 3;
1564  uint64_t IsInline : 1;
1565  uint64_t IsInlineSpecified : 1;
1566 
1567  uint64_t IsVirtualAsWritten : 1;
1568  uint64_t IsPure : 1;
1569  uint64_t HasInheritedPrototype : 1;
1570  uint64_t HasWrittenPrototype : 1;
1571  uint64_t IsDeleted : 1;
1572  /// Used by CXXMethodDecl
1573  uint64_t IsTrivial : 1;
1574 
1575  /// This flag indicates whether this function is trivial for the purpose of
1576  /// calls. This is meaningful only when this function is a copy/move
1577  /// constructor or a destructor.
1578  uint64_t IsTrivialForCall : 1;
1579 
1580  uint64_t IsDefaulted : 1;
1581  uint64_t IsExplicitlyDefaulted : 1;
1582  uint64_t HasDefaultedFunctionInfo : 1;
1583  uint64_t HasImplicitReturnZero : 1;
1584  uint64_t IsLateTemplateParsed : 1;
1585 
1586  /// Kind of contexpr specifier as defined by ConstexprSpecKind.
1587  uint64_t ConstexprKind : 2;
1588  uint64_t InstantiationIsPending : 1;
1589 
1590  /// Indicates if the function uses __try.
1591  uint64_t UsesSEHTry : 1;
1592 
1593  /// Indicates if the function was a definition
1594  /// but its body was skipped.
1595  uint64_t HasSkippedBody : 1;
1596 
1597  /// Indicates if the function declaration will
1598  /// have a body, once we're done parsing it.
1599  uint64_t WillHaveBody : 1;
1600 
1601  /// Indicates that this function is a multiversioned
1602  /// function using attribute 'target'.
1603  uint64_t IsMultiVersion : 1;
1604 
1605  /// [C++17] Only used by CXXDeductionGuideDecl. Indicates that
1606  /// the Deduction Guide is the implicitly generated 'copy
1607  /// deduction candidate' (is used during overload resolution).
1608  uint64_t IsCopyDeductionCandidate : 1;
1609 
1610  /// Store the ODRHash after first calculation.
1611  uint64_t HasODRHash : 1;
1612 
1613  /// Indicates if the function uses Floating Point Constrained Intrinsics
1614  uint64_t UsesFPIntrin : 1;
1615  };
1616 
1617  /// Number of non-inherited bits in FunctionDeclBitfields.
1618  enum { NumFunctionDeclBits = 27 };
1619 
1620  /// Stores the bits used by CXXConstructorDecl. If modified
1621  /// NumCXXConstructorDeclBits and the accessor
1622  /// methods in CXXConstructorDecl should be updated appropriately.
1623  class CXXConstructorDeclBitfields {
1624  friend class CXXConstructorDecl;
1625  /// For the bits in DeclContextBitfields.
1626  uint64_t : NumDeclContextBits;
1627  /// For the bits in FunctionDeclBitfields.
1628  uint64_t : NumFunctionDeclBits;
1629 
1630  /// 24 bits to fit in the remaining available space.
1631  /// Note that this makes CXXConstructorDeclBitfields take
1632  /// exactly 64 bits and thus the width of NumCtorInitializers
1633  /// will need to be shrunk if some bit is added to NumDeclContextBitfields,
1634  /// NumFunctionDeclBitfields or CXXConstructorDeclBitfields.
1635  uint64_t NumCtorInitializers : 21;
1636  uint64_t IsInheritingConstructor : 1;
1637 
1638  /// Whether this constructor has a trail-allocated explicit specifier.
1639  uint64_t HasTrailingExplicitSpecifier : 1;
1640  /// If this constructor does't have a trail-allocated explicit specifier.
1641  /// Whether this constructor is explicit specified.
1642  uint64_t IsSimpleExplicit : 1;
1643  };
1644 
1645  /// Number of non-inherited bits in CXXConstructorDeclBitfields.
1646  enum {
1647  NumCXXConstructorDeclBits = 64 - NumDeclContextBits - NumFunctionDeclBits
1648  };
1649 
1650  /// Stores the bits used by ObjCMethodDecl.
1651  /// If modified NumObjCMethodDeclBits and the accessor
1652  /// methods in ObjCMethodDecl should be updated appropriately.
1653  class ObjCMethodDeclBitfields {
1654  friend class ObjCMethodDecl;
1655 
1656  /// For the bits in DeclContextBitfields.
1657  uint64_t : NumDeclContextBits;
1658 
1659  /// The conventional meaning of this method; an ObjCMethodFamily.
1660  /// This is not serialized; instead, it is computed on demand and
1661  /// cached.
1662  mutable uint64_t Family : ObjCMethodFamilyBitWidth;
1663 
1664  /// instance (true) or class (false) method.
1665  uint64_t IsInstance : 1;
1666  uint64_t IsVariadic : 1;
1667 
1668  /// True if this method is the getter or setter for an explicit property.
1669  uint64_t IsPropertyAccessor : 1;
1670 
1671  /// True if this method is a synthesized property accessor stub.
1672  uint64_t IsSynthesizedAccessorStub : 1;
1673 
1674  /// Method has a definition.
1675  uint64_t IsDefined : 1;
1676 
1677  /// Method redeclaration in the same interface.
1678  uint64_t IsRedeclaration : 1;
1679 
1680  /// Is redeclared in the same interface.
1681  mutable uint64_t HasRedeclaration : 1;
1682 
1683  /// \@required/\@optional
1684  uint64_t DeclImplementation : 2;
1685 
1686  /// in, inout, etc.
1687  uint64_t objcDeclQualifier : 7;
1688 
1689  /// Indicates whether this method has a related result type.
1690  uint64_t RelatedResultType : 1;
1691 
1692  /// Whether the locations of the selector identifiers are in a
1693  /// "standard" position, a enum SelectorLocationsKind.
1694  uint64_t SelLocsKind : 2;
1695 
1696  /// Whether this method overrides any other in the class hierarchy.
1697  ///
1698  /// A method is said to override any method in the class's
1699  /// base classes, its protocols, or its categories' protocols, that has
1700  /// the same selector and is of the same kind (class or instance).
1701  /// A method in an implementation is not considered as overriding the same
1702  /// method in the interface or its categories.
1703  uint64_t IsOverriding : 1;
1704 
1705  /// Indicates if the method was a definition but its body was skipped.
1706  uint64_t HasSkippedBody : 1;
1707  };
1708 
1709  /// Number of non-inherited bits in ObjCMethodDeclBitfields.
1710  enum { NumObjCMethodDeclBits = 24 };
1711 
1712  /// Stores the bits used by ObjCContainerDecl.
1713  /// If modified NumObjCContainerDeclBits and the accessor
1714  /// methods in ObjCContainerDecl should be updated appropriately.
1715  class ObjCContainerDeclBitfields {
1716  friend class ObjCContainerDecl;
1717  /// For the bits in DeclContextBitfields
1718  uint32_t : NumDeclContextBits;
1719 
1720  // Not a bitfield but this saves space.
1721  // Note that ObjCContainerDeclBitfields is full.
1722  SourceLocation AtStart;
1723  };
1724 
1725  /// Number of non-inherited bits in ObjCContainerDeclBitfields.
1726  /// Note that here we rely on the fact that SourceLocation is 32 bits
1727  /// wide. We check this with the static_assert in the ctor of DeclContext.
1728  enum { NumObjCContainerDeclBits = 64 - NumDeclContextBits };
1729 
1730  /// Stores the bits used by LinkageSpecDecl.
1731  /// If modified NumLinkageSpecDeclBits and the accessor
1732  /// methods in LinkageSpecDecl should be updated appropriately.
1733  class LinkageSpecDeclBitfields {
1734  friend class LinkageSpecDecl;
1735  /// For the bits in DeclContextBitfields.
1736  uint64_t : NumDeclContextBits;
1737 
1738  /// The language for this linkage specification with values
1739  /// in the enum LinkageSpecDecl::LanguageIDs.
1740  uint64_t Language : 3;
1741 
1742  /// True if this linkage spec has braces.
1743  /// This is needed so that hasBraces() returns the correct result while the
1744  /// linkage spec body is being parsed. Once RBraceLoc has been set this is
1745  /// not used, so it doesn't need to be serialized.
1746  uint64_t HasBraces : 1;
1747  };
1748 
1749  /// Number of non-inherited bits in LinkageSpecDeclBitfields.
1750  enum { NumLinkageSpecDeclBits = 4 };
1751 
1752  /// Stores the bits used by BlockDecl.
1753  /// If modified NumBlockDeclBits and the accessor
1754  /// methods in BlockDecl should be updated appropriately.
1755  class BlockDeclBitfields {
1756  friend class BlockDecl;
1757  /// For the bits in DeclContextBitfields.
1758  uint64_t : NumDeclContextBits;
1759 
1760  uint64_t IsVariadic : 1;
1761  uint64_t CapturesCXXThis : 1;
1762  uint64_t BlockMissingReturnType : 1;
1763  uint64_t IsConversionFromLambda : 1;
1764 
1765  /// A bit that indicates this block is passed directly to a function as a
1766  /// non-escaping parameter.
1767  uint64_t DoesNotEscape : 1;
1768 
1769  /// A bit that indicates whether it's possible to avoid coying this block to
1770  /// the heap when it initializes or is assigned to a local variable with
1771  /// automatic storage.
1772  uint64_t CanAvoidCopyToHeap : 1;
1773  };
1774 
1775  /// Number of non-inherited bits in BlockDeclBitfields.
1776  enum { NumBlockDeclBits = 5 };
1777 
1778  /// Pointer to the data structure used to lookup declarations
1779  /// within this context (or a DependentStoredDeclsMap if this is a
1780  /// dependent context). We maintain the invariant that, if the map
1781  /// contains an entry for a DeclarationName (and we haven't lazily
1782  /// omitted anything), then it contains all relevant entries for that
1783  /// name (modulo the hasExternalDecls() flag).
1784  mutable StoredDeclsMap *LookupPtr = nullptr;
1785 
1786 protected:
1787  /// This anonymous union stores the bits belonging to DeclContext and classes
1788  /// deriving from it. The goal is to use otherwise wasted
1789  /// space in DeclContext to store data belonging to derived classes.
1790  /// The space saved is especially significient when pointers are aligned
1791  /// to 8 bytes. In this case due to alignment requirements we have a
1792  /// little less than 8 bytes free in DeclContext which we can use.
1793  /// We check that none of the classes in this union is larger than
1794  /// 8 bytes with static_asserts in the ctor of DeclContext.
1795  union {
1796  DeclContextBitfields DeclContextBits;
1797  TagDeclBitfields TagDeclBits;
1798  EnumDeclBitfields EnumDeclBits;
1799  RecordDeclBitfields RecordDeclBits;
1800  OMPDeclareReductionDeclBitfields OMPDeclareReductionDeclBits;
1801  FunctionDeclBitfields FunctionDeclBits;
1802  CXXConstructorDeclBitfields CXXConstructorDeclBits;
1803  ObjCMethodDeclBitfields ObjCMethodDeclBits;
1804  ObjCContainerDeclBitfields ObjCContainerDeclBits;
1805  LinkageSpecDeclBitfields LinkageSpecDeclBits;
1806  BlockDeclBitfields BlockDeclBits;
1807 
1808  static_assert(sizeof(DeclContextBitfields) <= 8,
1809  "DeclContextBitfields is larger than 8 bytes!");
1810  static_assert(sizeof(TagDeclBitfields) <= 8,
1811  "TagDeclBitfields is larger than 8 bytes!");
1812  static_assert(sizeof(EnumDeclBitfields) <= 8,
1813  "EnumDeclBitfields is larger than 8 bytes!");
1814  static_assert(sizeof(RecordDeclBitfields) <= 8,
1815  "RecordDeclBitfields is larger than 8 bytes!");
1816  static_assert(sizeof(OMPDeclareReductionDeclBitfields) <= 8,
1817  "OMPDeclareReductionDeclBitfields is larger than 8 bytes!");
1818  static_assert(sizeof(FunctionDeclBitfields) <= 8,
1819  "FunctionDeclBitfields is larger than 8 bytes!");
1820  static_assert(sizeof(CXXConstructorDeclBitfields) <= 8,
1821  "CXXConstructorDeclBitfields is larger than 8 bytes!");
1822  static_assert(sizeof(ObjCMethodDeclBitfields) <= 8,
1823  "ObjCMethodDeclBitfields is larger than 8 bytes!");
1824  static_assert(sizeof(ObjCContainerDeclBitfields) <= 8,
1825  "ObjCContainerDeclBitfields is larger than 8 bytes!");
1826  static_assert(sizeof(LinkageSpecDeclBitfields) <= 8,
1827  "LinkageSpecDeclBitfields is larger than 8 bytes!");
1828  static_assert(sizeof(BlockDeclBitfields) <= 8,
1829  "BlockDeclBitfields is larger than 8 bytes!");
1830  };
1831 
1832  /// FirstDecl - The first declaration stored within this declaration
1833  /// context.
1834  mutable Decl *FirstDecl = nullptr;
1835 
1836  /// LastDecl - The last declaration stored within this declaration
1837  /// context. FIXME: We could probably cache this value somewhere
1838  /// outside of the DeclContext, to reduce the size of DeclContext by
1839  /// another pointer.
1840  mutable Decl *LastDecl = nullptr;
1841 
1842  /// Build up a chain of declarations.
1843  ///
1844  /// \returns the first/last pair of declarations.
1845  static std::pair<Decl *, Decl *>
1846  BuildDeclChain(ArrayRef<Decl*> Decls, bool FieldsAlreadyLoaded);
1847 
1849 
1850 public:
1851  ~DeclContext();
1852 
1854  return static_cast<Decl::Kind>(DeclContextBits.DeclKind);
1855  }
1856 
1857  const char *getDeclKindName() const;
1858 
1859  /// getParent - Returns the containing DeclContext.
1861  return cast<Decl>(this)->getDeclContext();
1862  }
1863  const DeclContext *getParent() const {
1864  return const_cast<DeclContext*>(this)->getParent();
1865  }
1866 
1867  /// getLexicalParent - Returns the containing lexical DeclContext. May be
1868  /// different from getParent, e.g.:
1869  ///
1870  /// namespace A {
1871  /// struct S;
1872  /// }
1873  /// struct A::S {}; // getParent() == namespace 'A'
1874  /// // getLexicalParent() == translation unit
1875  ///
1877  return cast<Decl>(this)->getLexicalDeclContext();
1878  }
1880  return const_cast<DeclContext*>(this)->getLexicalParent();
1881  }
1882 
1884 
1885  const DeclContext *getLookupParent() const {
1886  return const_cast<DeclContext*>(this)->getLookupParent();
1887  }
1888 
1890  return cast<Decl>(this)->getASTContext();
1891  }
1892 
1893  bool isClosure() const { return getDeclKind() == Decl::Block; }
1894 
1895  /// Return this DeclContext if it is a BlockDecl. Otherwise, return the
1896  /// innermost enclosing BlockDecl or null if there are no enclosing blocks.
1897  const BlockDecl *getInnermostBlockDecl() const;
1898 
1899  bool isObjCContainer() const {
1900  switch (getDeclKind()) {
1901  case Decl::ObjCCategory:
1902  case Decl::ObjCCategoryImpl:
1903  case Decl::ObjCImplementation:
1904  case Decl::ObjCInterface:
1905  case Decl::ObjCProtocol:
1906  return true;
1907  default:
1908  return false;
1909  }
1910  }
1911 
1912  bool isFunctionOrMethod() const {
1913  switch (getDeclKind()) {
1914  case Decl::Block:
1915  case Decl::Captured:
1916  case Decl::ObjCMethod:
1917  return true;
1918  default:
1919  return getDeclKind() >= Decl::firstFunction &&
1920  getDeclKind() <= Decl::lastFunction;
1921  }
1922  }
1923 
1924  /// Test whether the context supports looking up names.
1925  bool isLookupContext() const {
1926  return !isFunctionOrMethod() && getDeclKind() != Decl::LinkageSpec &&
1927  getDeclKind() != Decl::Export;
1928  }
1929 
1930  bool isFileContext() const {
1931  return getDeclKind() == Decl::TranslationUnit ||
1932  getDeclKind() == Decl::Namespace;
1933  }
1934 
1935  bool isTranslationUnit() const {
1936  return getDeclKind() == Decl::TranslationUnit;
1937  }
1938 
1939  bool isRecord() const {
1940  return getDeclKind() >= Decl::firstRecord &&
1941  getDeclKind() <= Decl::lastRecord;
1942  }
1943 
1944  bool isNamespace() const { return getDeclKind() == Decl::Namespace; }
1945 
1946  bool isStdNamespace() const;
1947 
1948  bool isInlineNamespace() const;
1949 
1950  /// Determines whether this context is dependent on a
1951  /// template parameter.
1952  bool isDependentContext() const;
1953 
1954  /// isTransparentContext - Determines whether this context is a
1955  /// "transparent" context, meaning that the members declared in this
1956  /// context are semantically declared in the nearest enclosing
1957  /// non-transparent (opaque) context but are lexically declared in
1958  /// this context. For example, consider the enumerators of an
1959  /// enumeration type:
1960  /// @code
1961  /// enum E {
1962  /// Val1
1963  /// };
1964  /// @endcode
1965  /// Here, E is a transparent context, so its enumerator (Val1) will
1966  /// appear (semantically) that it is in the same context of E.
1967  /// Examples of transparent contexts include: enumerations (except for
1968  /// C++0x scoped enums), and C++ linkage specifications.
1969  bool isTransparentContext() const;
1970 
1971  /// Determines whether this context or some of its ancestors is a
1972  /// linkage specification context that specifies C linkage.
1973  bool isExternCContext() const;
1974 
1975  /// Retrieve the nearest enclosing C linkage specification context.
1976  const LinkageSpecDecl *getExternCContext() const;
1977 
1978  /// Determines whether this context or some of its ancestors is a
1979  /// linkage specification context that specifies C++ linkage.
1980  bool isExternCXXContext() const;
1981 
1982  /// Determine whether this declaration context is equivalent
1983  /// to the declaration context DC.
1984  bool Equals(const DeclContext *DC) const {
1985  return DC && this->getPrimaryContext() == DC->getPrimaryContext();
1986  }
1987 
1988  /// Determine whether this declaration context encloses the
1989  /// declaration context DC.
1990  bool Encloses(const DeclContext *DC) const;
1991 
1992  /// Find the nearest non-closure ancestor of this context,
1993  /// i.e. the innermost semantic parent of this context which is not
1994  /// a closure. A context may be its own non-closure ancestor.
1996  const Decl *getNonClosureAncestor() const {
1997  return const_cast<DeclContext*>(this)->getNonClosureAncestor();
1998  }
1999 
2000  // Retrieve the nearest context that is not a transparent context.
2003  return const_cast<DeclContext *>(this)->getNonTransparentContext();
2004  }
2005 
2006  /// getPrimaryContext - There may be many different
2007  /// declarations of the same entity (including forward declarations
2008  /// of classes, multiple definitions of namespaces, etc.), each with
2009  /// a different set of declarations. This routine returns the
2010  /// "primary" DeclContext structure, which will contain the
2011  /// information needed to perform name lookup into this context.
2014  return const_cast<DeclContext*>(this)->getPrimaryContext();
2015  }
2016 
2017  /// getRedeclContext - Retrieve the context in which an entity conflicts with
2018  /// other entities of the same name, or where it is a redeclaration if the
2019  /// two entities are compatible. This skips through transparent contexts.
2022  return const_cast<DeclContext *>(this)->getRedeclContext();
2023  }
2024 
2025  /// Retrieve the nearest enclosing namespace context.
2028  return const_cast<DeclContext *>(this)->getEnclosingNamespaceContext();
2029  }
2030 
2031  /// Retrieve the outermost lexically enclosing record context.
2034  return const_cast<DeclContext *>(this)->getOuterLexicalRecordContext();
2035  }
2036 
2037  /// Test if this context is part of the enclosing namespace set of
2038  /// the context NS, as defined in C++0x [namespace.def]p9. If either context
2039  /// isn't a namespace, this is equivalent to Equals().
2040  ///
2041  /// The enclosing namespace set of a namespace is the namespace and, if it is
2042  /// inline, its enclosing namespace, recursively.
2043  bool InEnclosingNamespaceSetOf(const DeclContext *NS) const;
2044 
2045  /// Collects all of the declaration contexts that are semantically
2046  /// connected to this declaration context.
2047  ///
2048  /// For declaration contexts that have multiple semantically connected but
2049  /// syntactically distinct contexts, such as C++ namespaces, this routine
2050  /// retrieves the complete set of such declaration contexts in source order.
2051  /// For example, given:
2052  ///
2053  /// \code
2054  /// namespace N {
2055  /// int x;
2056  /// }
2057  /// namespace N {
2058  /// int y;
2059  /// }
2060  /// \endcode
2061  ///
2062  /// The \c Contexts parameter will contain both definitions of N.
2063  ///
2064  /// \param Contexts Will be cleared and set to the set of declaration
2065  /// contexts that are semanticaly connected to this declaration context,
2066  /// in source order, including this context (which may be the only result,
2067  /// for non-namespace contexts).
2069 
2070  /// decl_iterator - Iterates through the declarations stored
2071  /// within this context.
2073  /// Current - The current declaration.
2074  Decl *Current = nullptr;
2075 
2076  public:
2077  using value_type = Decl *;
2078  using reference = const value_type &;
2079  using pointer = const value_type *;
2080  using iterator_category = std::forward_iterator_tag;
2082 
2083  decl_iterator() = default;
2084  explicit decl_iterator(Decl *C) : Current(C) {}
2085 
2086  reference operator*() const { return Current; }
2087 
2088  // This doesn't meet the iterator requirements, but it's convenient
2089  value_type operator->() const { return Current; }
2090 
2092  Current = Current->getNextDeclInContext();
2093  return *this;
2094  }
2095 
2097  decl_iterator tmp(*this);
2098  ++(*this);
2099  return tmp;
2100  }
2101 
2103  return x.Current == y.Current;
2104  }
2105 
2107  return x.Current != y.Current;
2108  }
2109  };
2110 
2111  using decl_range = llvm::iterator_range<decl_iterator>;
2112 
2113  /// decls_begin/decls_end - Iterate over the declarations stored in
2114  /// this context.
2116  decl_iterator decls_begin() const;
2117  decl_iterator decls_end() const { return decl_iterator(); }
2118  bool decls_empty() const;
2119 
2120  /// noload_decls_begin/end - Iterate over the declarations stored in this
2121  /// context that are currently loaded; don't attempt to retrieve anything
2122  /// from an external source.
2125  }
2128 
2129  /// specific_decl_iterator - Iterates over a subrange of
2130  /// declarations stored in a DeclContext, providing only those that
2131  /// are of type SpecificDecl (or a class derived from it). This
2132  /// iterator is used, for example, to provide iteration over just
2133  /// the fields within a RecordDecl (with SpecificDecl = FieldDecl).
2134  template<typename SpecificDecl>
2136  /// Current - The current, underlying declaration iterator, which
2137  /// will either be NULL or will point to a declaration of
2138  /// type SpecificDecl.
2140 
2141  /// SkipToNextDecl - Advances the current position up to the next
2142  /// declaration of type SpecificDecl that also meets the criteria
2143  /// required by Acceptable.
2144  void SkipToNextDecl() {
2145  while (*Current && !isa<SpecificDecl>(*Current))
2146  ++Current;
2147  }
2148 
2149  public:
2150  using value_type = SpecificDecl *;
2151  // TODO: Add reference and pointer types (with some appropriate proxy type)
2152  // if we ever have a need for them.
2153  using reference = void;
2154  using pointer = void;
2155  using difference_type =
2156  std::iterator_traits<DeclContext::decl_iterator>::difference_type;
2157  using iterator_category = std::forward_iterator_tag;
2158 
2159  specific_decl_iterator() = default;
2160 
2161  /// specific_decl_iterator - Construct a new iterator over a
2162  /// subset of the declarations the range [C,
2163  /// end-of-declarations). If A is non-NULL, it is a pointer to a
2164  /// member function of SpecificDecl that should return true for
2165  /// all of the SpecificDecl instances that will be in the subset
2166  /// of iterators. For example, if you want Objective-C instance
2167  /// methods, SpecificDecl will be ObjCMethodDecl and A will be
2168  /// &ObjCMethodDecl::isInstanceMethod.
2170  SkipToNextDecl();
2171  }
2172 
2173  value_type operator*() const { return cast<SpecificDecl>(*Current); }
2174 
2175  // This doesn't meet the iterator requirements, but it's convenient
2176  value_type operator->() const { return **this; }
2177 
2179  ++Current;
2180  SkipToNextDecl();
2181  return *this;
2182  }
2183 
2185  specific_decl_iterator tmp(*this);
2186  ++(*this);
2187  return tmp;
2188  }
2189 
2191  const specific_decl_iterator& y) {
2192  return x.Current == y.Current;
2193  }
2194 
2196  const specific_decl_iterator& y) {
2197  return x.Current != y.Current;
2198  }
2199  };
2200 
2201  /// Iterates over a filtered subrange of declarations stored
2202  /// in a DeclContext.
2203  ///
2204  /// This iterator visits only those declarations that are of type
2205  /// SpecificDecl (or a class derived from it) and that meet some
2206  /// additional run-time criteria. This iterator is used, for
2207  /// example, to provide access to the instance methods within an
2208  /// Objective-C interface (with SpecificDecl = ObjCMethodDecl and
2209  /// Acceptable = ObjCMethodDecl::isInstanceMethod).
2210  template<typename SpecificDecl, bool (SpecificDecl::*Acceptable)() const>
2212  /// Current - The current, underlying declaration iterator, which
2213  /// will either be NULL or will point to a declaration of
2214  /// type SpecificDecl.
2216 
2217  /// SkipToNextDecl - Advances the current position up to the next
2218  /// declaration of type SpecificDecl that also meets the criteria
2219  /// required by Acceptable.
2220  void SkipToNextDecl() {
2221  while (*Current &&
2222  (!isa<SpecificDecl>(*Current) ||
2223  (Acceptable && !(cast<SpecificDecl>(*Current)->*Acceptable)())))
2224  ++Current;
2225  }
2226 
2227  public:
2228  using value_type = SpecificDecl *;
2229  // TODO: Add reference and pointer types (with some appropriate proxy type)
2230  // if we ever have a need for them.
2231  using reference = void;
2232  using pointer = void;
2233  using difference_type =
2234  std::iterator_traits<DeclContext::decl_iterator>::difference_type;
2235  using iterator_category = std::forward_iterator_tag;
2236 
2237  filtered_decl_iterator() = default;
2238 
2239  /// filtered_decl_iterator - Construct a new iterator over a
2240  /// subset of the declarations the range [C,
2241  /// end-of-declarations). If A is non-NULL, it is a pointer to a
2242  /// member function of SpecificDecl that should return true for
2243  /// all of the SpecificDecl instances that will be in the subset
2244  /// of iterators. For example, if you want Objective-C instance
2245  /// methods, SpecificDecl will be ObjCMethodDecl and A will be
2246  /// &ObjCMethodDecl::isInstanceMethod.
2248  SkipToNextDecl();
2249  }
2250 
2251  value_type operator*() const { return cast<SpecificDecl>(*Current); }
2252  value_type operator->() const { return cast<SpecificDecl>(*Current); }
2253 
2255  ++Current;
2256  SkipToNextDecl();
2257  return *this;
2258  }
2259 
2261  filtered_decl_iterator tmp(*this);
2262  ++(*this);
2263  return tmp;
2264  }
2265 
2267  const filtered_decl_iterator& y) {
2268  return x.Current == y.Current;
2269  }
2270 
2272  const filtered_decl_iterator& y) {
2273  return x.Current != y.Current;
2274  }
2275  };
2276 
2277  /// Add the declaration D into this context.
2278  ///
2279  /// This routine should be invoked when the declaration D has first
2280  /// been declared, to place D into the context where it was
2281  /// (lexically) defined. Every declaration must be added to one
2282  /// (and only one!) context, where it can be visited via
2283  /// [decls_begin(), decls_end()). Once a declaration has been added
2284  /// to its lexical context, the corresponding DeclContext owns the
2285  /// declaration.
2286  ///
2287  /// If D is also a NamedDecl, it will be made visible within its
2288  /// semantic context via makeDeclVisibleInContext.
2289  void addDecl(Decl *D);
2290 
2291  /// Add the declaration D into this context, but suppress
2292  /// searches for external declarations with the same name.
2293  ///
2294  /// Although analogous in function to addDecl, this removes an
2295  /// important check. This is only useful if the Decl is being
2296  /// added in response to an external search; in all other cases,
2297  /// addDecl() is the right function to use.
2298  /// See the ASTImporter for use cases.
2299  void addDeclInternal(Decl *D);
2300 
2301  /// Add the declaration D to this context without modifying
2302  /// any lookup tables.
2303  ///
2304  /// This is useful for some operations in dependent contexts where
2305  /// the semantic context might not be dependent; this basically
2306  /// only happens with friends.
2307  void addHiddenDecl(Decl *D);
2308 
2309  /// Removes a declaration from this context.
2310  void removeDecl(Decl *D);
2311 
2312  /// Checks whether a declaration is in this context.
2313  bool containsDecl(Decl *D) const;
2314 
2315  /// Checks whether a declaration is in this context.
2316  /// This also loads the Decls from the external source before the check.
2317  bool containsDeclAndLoad(Decl *D) const;
2318 
2321 
2322  /// lookup - Find the declarations (if any) with the given Name in
2323  /// this context. Returns a range of iterators that contains all of
2324  /// the declarations with this name, with object, function, member,
2325  /// and enumerator names preceding any tag name. Note that this
2326  /// routine will not look into parent contexts.
2327  lookup_result lookup(DeclarationName Name) const;
2328 
2329  /// Find the declarations with the given name that are visible
2330  /// within this context; don't attempt to retrieve anything from an
2331  /// external source.
2333 
2334  /// A simplistic name lookup mechanism that performs name lookup
2335  /// into this declaration context without consulting the external source.
2336  ///
2337  /// This function should almost never be used, because it subverts the
2338  /// usual relationship between a DeclContext and the external source.
2339  /// See the ASTImporter for the (few, but important) use cases.
2340  ///
2341  /// FIXME: This is very inefficient; replace uses of it with uses of
2342  /// noload_lookup.
2344  SmallVectorImpl<NamedDecl *> &Results);
2345 
2346  /// Makes a declaration visible within this context.
2347  ///
2348  /// This routine makes the declaration D visible to name lookup
2349  /// within this context and, if this is a transparent context,
2350  /// within its parent contexts up to the first enclosing
2351  /// non-transparent context. Making a declaration visible within a
2352  /// context does not transfer ownership of a declaration, and a
2353  /// declaration can be visible in many contexts that aren't its
2354  /// lexical context.
2355  ///
2356  /// If D is a redeclaration of an existing declaration that is
2357  /// visible from this context, as determined by
2358  /// NamedDecl::declarationReplaces, the previous declaration will be
2359  /// replaced with D.
2361 
2362  /// all_lookups_iterator - An iterator that provides a view over the results
2363  /// of looking up every possible name.
2364  class all_lookups_iterator;
2365 
2366  using lookups_range = llvm::iterator_range<all_lookups_iterator>;
2367 
2368  lookups_range lookups() const;
2369  // Like lookups(), but avoids loading external declarations.
2370  // If PreserveInternalState, avoids building lookup data structures too.
2371  lookups_range noload_lookups(bool PreserveInternalState) const;
2372 
2373  /// Iterators over all possible lookups within this context.
2376 
2377  /// Iterators over all possible lookups within this context that are
2378  /// currently loaded; don't attempt to retrieve anything from an external
2379  /// source.
2382 
2383  struct udir_iterator;
2384 
2385  using udir_iterator_base =
2386  llvm::iterator_adaptor_base<udir_iterator, lookup_iterator,
2389 
2392 
2393  UsingDirectiveDecl *operator*() const;
2394  };
2395 
2396  using udir_range = llvm::iterator_range<udir_iterator>;
2397 
2398  udir_range using_directives() const;
2399 
2400  // These are all defined in DependentDiagnostic.h.
2401  class ddiag_iterator;
2402 
2403  using ddiag_range = llvm::iterator_range<DeclContext::ddiag_iterator>;
2404 
2405  inline ddiag_range ddiags() const;
2406 
2407  // Low-level accessors
2408 
2409  /// Mark that there are external lexical declarations that we need
2410  /// to include in our lookup table (and that are not available as external
2411  /// visible lookups). These extra lookup results will be found by walking
2412  /// the lexical declarations of this context. This should be used only if
2413  /// setHasExternalLexicalStorage() has been called on any decl context for
2414  /// which this is the primary context.
2416  assert(this == getPrimaryContext() &&
2417  "should only be called on primary context");
2418  DeclContextBits.HasLazyExternalLexicalLookups = true;
2419  }
2420 
2421  /// Retrieve the internal representation of the lookup structure.
2422  /// This may omit some names if we are lazily building the structure.
2423  StoredDeclsMap *getLookupPtr() const { return LookupPtr; }
2424 
2425  /// Ensure the lookup structure is fully-built and return it.
2427 
2428  /// Whether this DeclContext has external storage containing
2429  /// additional declarations that are lexically in this context.
2431  return DeclContextBits.ExternalLexicalStorage;
2432  }
2433 
2434  /// State whether this DeclContext has external storage for
2435  /// declarations lexically in this context.
2436  void setHasExternalLexicalStorage(bool ES = true) const {
2437  DeclContextBits.ExternalLexicalStorage = ES;
2438  }
2439 
2440  /// Whether this DeclContext has external storage containing
2441  /// additional declarations that are visible in this context.
2443  return DeclContextBits.ExternalVisibleStorage;
2444  }
2445 
2446  /// State whether this DeclContext has external storage for
2447  /// declarations visible in this context.
2448  void setHasExternalVisibleStorage(bool ES = true) const {
2449  DeclContextBits.ExternalVisibleStorage = ES;
2450  if (ES && LookupPtr)
2451  DeclContextBits.NeedToReconcileExternalVisibleStorage = true;
2452  }
2453 
2454  /// Determine whether the given declaration is stored in the list of
2455  /// declarations lexically within this context.
2456  bool isDeclInLexicalTraversal(const Decl *D) const {
2457  return D && (D->NextInContextAndBits.getPointer() || D == FirstDecl ||
2458  D == LastDecl);
2459  }
2460 
2461  bool setUseQualifiedLookup(bool use = true) const {
2462  bool old_value = DeclContextBits.UseQualifiedLookup;
2463  DeclContextBits.UseQualifiedLookup = use;
2464  return old_value;
2465  }
2466 
2468  return DeclContextBits.UseQualifiedLookup;
2469  }
2470 
2471  static bool classof(const Decl *D);
2472  static bool classof(const DeclContext *D) { return true; }
2473 
2474  void dumpDeclContext() const;
2475  void dumpLookups() const;
2476  void dumpLookups(llvm::raw_ostream &OS, bool DumpDecls = false,
2477  bool Deserialize = false) const;
2478 
2479 private:
2480  /// Whether this declaration context has had externally visible
2481  /// storage added since the last lookup. In this case, \c LookupPtr's
2482  /// invariant may not hold and needs to be fixed before we perform
2483  /// another lookup.
2484  bool hasNeedToReconcileExternalVisibleStorage() const {
2485  return DeclContextBits.NeedToReconcileExternalVisibleStorage;
2486  }
2487 
2488  /// State that this declaration context has had externally visible
2489  /// storage added since the last lookup. In this case, \c LookupPtr's
2490  /// invariant may not hold and needs to be fixed before we perform
2491  /// another lookup.
2492  void setNeedToReconcileExternalVisibleStorage(bool Need = true) const {
2493  DeclContextBits.NeedToReconcileExternalVisibleStorage = Need;
2494  }
2495 
2496  /// If \c true, this context may have local lexical declarations
2497  /// that are missing from the lookup table.
2498  bool hasLazyLocalLexicalLookups() const {
2499  return DeclContextBits.HasLazyLocalLexicalLookups;
2500  }
2501 
2502  /// If \c true, this context may have local lexical declarations
2503  /// that are missing from the lookup table.
2504  void setHasLazyLocalLexicalLookups(bool HasLLLL = true) const {
2505  DeclContextBits.HasLazyLocalLexicalLookups = HasLLLL;
2506  }
2507 
2508  /// If \c true, the external source may have lexical declarations
2509  /// that are missing from the lookup table.
2510  bool hasLazyExternalLexicalLookups() const {
2511  return DeclContextBits.HasLazyExternalLexicalLookups;
2512  }
2513 
2514  /// If \c true, the external source may have lexical declarations
2515  /// that are missing from the lookup table.
2516  void setHasLazyExternalLexicalLookups(bool HasLELL = true) const {
2517  DeclContextBits.HasLazyExternalLexicalLookups = HasLELL;
2518  }
2519 
2520  void reconcileExternalVisibleStorage() const;
2521  bool LoadLexicalDeclsFromExternalStorage() const;
2522 
2523  /// Makes a declaration visible within this context, but
2524  /// suppresses searches for external declarations with the same
2525  /// name.
2526  ///
2527  /// Analogous to makeDeclVisibleInContext, but for the exclusive
2528  /// use of addDeclInternal().
2529  void makeDeclVisibleInContextInternal(NamedDecl *D);
2530 
2531  StoredDeclsMap *CreateStoredDeclsMap(ASTContext &C) const;
2532 
2533  void loadLazyLocalLexicalLookups();
2534  void buildLookupImpl(DeclContext *DCtx, bool Internal);
2535  void makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
2536  bool Rediscoverable);
2537  void makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal);
2538 };
2539 
2540 inline bool Decl::isTemplateParameter() const {
2541  return getKind() == TemplateTypeParm || getKind() == NonTypeTemplateParm ||
2542  getKind() == TemplateTemplateParm;
2543 }
2544 
2545 // Specialization selected when ToTy is not a known subclass of DeclContext.
2546 template <class ToTy,
2547  bool IsKnownSubtype = ::std::is_base_of<DeclContext, ToTy>::value>
2549  static const ToTy *doit(const DeclContext *Val) {
2550  return static_cast<const ToTy*>(Decl::castFromDeclContext(Val));
2551  }
2552 
2553  static ToTy *doit(DeclContext *Val) {
2554  return static_cast<ToTy*>(Decl::castFromDeclContext(Val));
2555  }
2556 };
2557 
2558 // Specialization selected when ToTy is a known subclass of DeclContext.
2559 template <class ToTy>
2561  static const ToTy *doit(const DeclContext *Val) {
2562  return static_cast<const ToTy*>(Val);
2563  }
2564 
2565  static ToTy *doit(DeclContext *Val) {
2566  return static_cast<ToTy*>(Val);
2567  }
2568 };
2569 
2570 } // namespace clang
2571 
2572 namespace llvm {
2573 
2574 /// isa<T>(DeclContext*)
2575 template <typename To>
2576 struct isa_impl<To, ::clang::DeclContext> {
2577  static bool doit(const ::clang::DeclContext &Val) {
2578  return To::classofKind(Val.getDeclKind());
2579  }
2580 };
2581 
2582 /// cast<T>(DeclContext*)
2583 template<class ToTy>
2584 struct cast_convert_val<ToTy,
2585  const ::clang::DeclContext,const ::clang::DeclContext> {
2586  static const ToTy &doit(const ::clang::DeclContext &Val) {
2588  }
2589 };
2590 
2591 template<class ToTy>
2592 struct cast_convert_val<ToTy, ::clang::DeclContext, ::clang::DeclContext> {
2593  static ToTy &doit(::clang::DeclContext &Val) {
2595  }
2596 };
2597 
2598 template<class ToTy>
2599 struct cast_convert_val<ToTy,
2600  const ::clang::DeclContext*, const ::clang::DeclContext*> {
2601  static const ToTy *doit(const ::clang::DeclContext *Val) {
2602  return ::clang::cast_convert_decl_context<ToTy>::doit(Val);
2603  }
2604 };
2605 
2606 template<class ToTy>
2607 struct cast_convert_val<ToTy, ::clang::DeclContext*, ::clang::DeclContext*> {
2608  static ToTy *doit(::clang::DeclContext *Val) {
2609  return ::clang::cast_convert_decl_context<ToTy>::doit(Val);
2610  }
2611 };
2612 
2613 /// Implement cast_convert_val for Decl -> DeclContext conversions.
2614 template<class FromTy>
2615 struct cast_convert_val< ::clang::DeclContext, FromTy, FromTy> {
2616  static ::clang::DeclContext &doit(const FromTy &Val) {
2617  return *FromTy::castToDeclContext(&Val);
2618  }
2619 };
2620 
2621 template<class FromTy>
2622 struct cast_convert_val< ::clang::DeclContext, FromTy*, FromTy*> {
2623  static ::clang::DeclContext *doit(const FromTy *Val) {
2624  return FromTy::castToDeclContext(Val);
2625  }
2626 };
2627 
2628 template<class FromTy>
2629 struct cast_convert_val< const ::clang::DeclContext, FromTy, FromTy> {
2630  static const ::clang::DeclContext &doit(const FromTy &Val) {
2631  return *FromTy::castToDeclContext(&Val);
2632  }
2633 };
2634 
2635 template<class FromTy>
2636 struct cast_convert_val< const ::clang::DeclContext, FromTy*, FromTy*> {
2637  static const ::clang::DeclContext *doit(const FromTy *Val) {
2638  return FromTy::castToDeclContext(Val);
2639  }
2640 };
2641 
2642 } // namespace llvm
2643 
2644 #endif // LLVM_CLANG_AST_DECLBASE_H
clang::Decl::setLexicalDeclContext
void setLexicalDeclContext(DeclContext *DC)
Definition: DeclBase.cpp:331
clang::DeclContext::noload_decls_end
decl_iterator noload_decls_end() const
Definition: DeclBase.h:2127
clang::DeclContext::hasExternalVisibleStorage
bool hasExternalVisibleStorage() const
Whether this DeclContext has external storage containing additional declarations that are visible in ...
Definition: DeclBase.h:2442
clang::DeclContext::localUncachedLookup
void localUncachedLookup(DeclarationName Name, SmallVectorImpl< NamedDecl * > &Results)
A simplistic name lookup mechanism that performs name lookup into this declaration context without co...
Definition: DeclBase.cpp:1742
clang::DeclContextLookupResult::DeclContextLookupResult
DeclContextLookupResult(Decls Result)
Definition: DeclBase.h:1300
clang::Decl::getNonClosureContext
const Decl * getNonClosureContext() const
Definition: DeclBase.h:454
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:414
clang::DeclContext::decls_end
decl_iterator decls_end() const
Definition: DeclBase.h:2117
clang::DeclContext::removeDecl
void removeDecl(Decl *D)
Removes a declaration from this context.
Definition: DeclBase.cpp:1482
clang::Decl::IDNS_Type
@ IDNS_Type
Types, declared with 'struct foo', typedefs, etc.
Definition: DeclBase.h:133
clang::Decl::FriendObjectKind
FriendObjectKind
Definition: DeclBase.h:1133
clang::Decl::specific_attr_end
specific_attr_iterator< T > specific_attr_end() const
Definition: DeclBase.h:539
llvm
Definition: Dominators.h:30
clang::DeclContext::specific_decl_iterator::specific_decl_iterator
specific_decl_iterator()=default
clang::Decl::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: DeclBase.h:422
clang::DeclContext::getParentASTContext
ASTContext & getParentASTContext() const
Definition: DeclBase.h:1889
clang::Decl::isUnavailable
bool isUnavailable(std::string *Message=nullptr) const
Determine whether this declaration is marked 'unavailable'.
Definition: DeclBase.h:694
clang::DeclContext::getExternCContext
const LinkageSpecDecl * getExternCContext() const
Retrieve the nearest enclosing C linkage specification context.
Definition: DeclBase.cpp:1195
clang::DeclContext::decls
decl_range decls() const
decls_begin/decls_end - Iterate over the declarations stored in this context.
Definition: DeclBase.h:2115
clang::Decl::setDeclContext
void setDeclContext(DeclContext *DC)
setDeclContext - Set both the semantic and lexical DeclContext to DC.
Definition: DeclBase.cpp:327
Specifiers.h
clang::Decl::hasCachedLinkage
bool hasCachedLinkage() const
Definition: DeclBase.h:412
clang::DeclContext::specific_decl_iterator
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext,...
Definition: DeclBase.h:2135
clang::DeclContextLookupResult::end
const_iterator end() const
Definition: DeclBase.h:1311
clang::DeclContext::getNonClosureAncestor
const Decl * getNonClosureAncestor() const
Definition: DeclBase.h:1996
clang::DeclContext::hasExternalLexicalStorage
bool hasExternalLexicalStorage() const
Whether this DeclContext has external storage containing additional declarations that are lexically i...
Definition: DeclBase.h:2430
clang::Decl::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclBase.h:426
clang::LinkageSpecDecl
Represents a linkage specification.
Definition: DeclCXX.h:2797
clang::DeclContext::addHiddenDecl
void addHiddenDecl(Decl *D)
Add the declaration D to this context without modifying any lookup tables.
Definition: DeclBase.cpp:1533
clang::Decl::isTemplateDecl
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:226
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:212
clang::DeclContext::ObjCContainerDeclBits
ObjCContainerDeclBitfields ObjCContainerDeclBits
Definition: DeclBase.h:1804
clang::Decl::getImportedOwningModule
Module * getImportedOwningModule() const
Get the imported owning module, if this decl is from an imported (non-local) module.
Definition: DeclBase.h:743
string
string(SUBSTRING ${CMAKE_CURRENT_BINARY_DIR} 0 ${PATH_LIB_START} PATH_HEAD) string(SUBSTRING $
Definition: CMakeLists.txt:22
clang::DeclListNode::iterator::operator!=
bool operator!=(const iterator &X) const
Definition: DeclBase.h:1267
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1347
clang::cast_convert_decl_context< ToTy, true >::doit
static const ToTy * doit(const DeclContext *Val)
Definition: DeclBase.h:2561
clang::Decl::redecl_iterator::operator++
redecl_iterator & operator++()
Definition: DeclBase.h:944
clang::Decl::hasAttr
bool hasAttr() const
Definition: DeclBase.h:547
clang::DeclContext::OMPDeclareReductionDeclBits
OMPDeclareReductionDeclBitfields OMPDeclareReductionDeclBits
Definition: DeclBase.h:1800
clang::Decl::getNextRedeclarationImpl
virtual Decl * getNextRedeclarationImpl()
Returns the next redeclaration or itself if this is the only decl.
Definition: DeclBase.h:914
clang::Redeclarable
Provides common interface for the Decls that can be redeclared.
Definition: Redeclarable.h:84
clang::Decl::getParentFunctionOrMethod
const DeclContext * getParentFunctionOrMethod() const
If this decl is defined inside a function/method/block it returns the corresponding DeclContext,...
Definition: DeclBase.cpp:286
llvm::cast_convert_val< ToTy, ::clang::DeclContext, ::clang::DeclContext >::doit
static ToTy & doit(::clang::DeclContext &Val)
Definition: DeclBase.h:2593
clang::DeclContext::all_lookups_iterator
all_lookups_iterator - An iterator that provides a view over the results of looking up every possible...
Definition: DeclLookups.h:28
clang::DeclContext::decl_iterator::operator*
reference operator*() const
Definition: DeclBase.h:2086
clang::Decl::isTemplateParameter
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:2540
clang::Decl::getAsFunction
FunctionDecl * getAsFunction() LLVM_READONLY
Returns the function itself, or the templated function if this is a function template.
Definition: DeclBase.cpp:218
clang::Decl::Decl
Decl()=delete
Used
@ Used
Definition: ObjCUnusedIVarsChecker.cpp:29
clang::Decl::isOutOfLine
virtual bool isOutOfLine() const
Determine whether this declaration is declared out of line (outside its semantic context).
Definition: Decl.cpp:99
clang::DeclContext::getParent
const DeclContext * getParent() const
Definition: DeclBase.h:1863
clang::DeclContext::getNonClosureAncestor
Decl * getNonClosureAncestor()
Find the nearest non-closure ancestor of this context, i.e.
Definition: DeclBase.cpp:1049
clang::UsingDirectiveDecl
Represents C++ using-directive.
Definition: DeclCXX.h:2882
clang::DeclContext::BlockDeclBits
BlockDeclBitfields BlockDeclBits
Definition: DeclBase.h:1806
clang::Decl::getASTMutationListener
ASTMutationListener * getASTMutationListener() const
Definition: DeclBase.cpp:424
llvm::SmallVector
Definition: LLVM.h:38
clang::AR_Deprecated
@ AR_Deprecated
Definition: DeclBase.h:78
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:88
clang::Decl::redecls_begin
redecl_iterator redecls_begin() const
Definition: DeclBase.h:976
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:249
clang::DeclContext::getPrimaryContext
DeclContext * getPrimaryContext()
getPrimaryContext - There may be many different declarations of the same entity (including forward de...
Definition: DeclBase.cpp:1229
clang::Decl::ModuleOwnershipKind::ModulePrivate
@ ModulePrivate
This declaration has an owning module, but is only visible to lookups that occur within that module.
clang::SourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:221
clang::Decl::add
static void add(Kind k)
Definition: DeclBase.cpp:193
clang::DeclContextLookupResult::isSingleResult
bool isSingleResult() const
Definition: DeclBase.h:1314
clang::DeclContext::addDeclInternal
void addDeclInternal(Decl *D)
Add the declaration D into this context, but suppress searches for external declarations with the sam...
Definition: DeclBase.cpp:1567
AttributeLangSupport::C
@ C
Definition: SemaDeclAttr.cpp:54
clang::Decl::IDNS_Using
@ IDNS_Using
This declaration is a using declaration.
Definition: DeclBase.h:166
clang::Decl::PrintStats
static void PrintStats()
Definition: DeclBase.cpp:169
clang::Decl::getCachedLinkage
Linkage getCachedLinkage() const
Definition: DeclBase.h:404
clang::Decl::hasBody
virtual bool hasBody() const
Returns true if this Decl represents a declaration for a body of code, such as a function or method d...
Definition: DeclBase.h:1016
clang::DeclContextLookupResult::begin
const_iterator begin() const
Definition: DeclBase.h:1308
clang::DeclContext::decl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:2089
clang::Decl::redecl_range
llvm::iterator_range< redecl_iterator > redecl_range
Definition: DeclBase.h:968
clang::Decl::getNextDeclInContext
Decl * getNextDeclInContext()
Definition: DeclBase.h:436
clang::DeclListNode::iterator
Definition: DeclBase.h:1244
clang::Decl::OBJC_TQ_Out
@ OBJC_TQ_Out
Definition: DeclBase.h:205
llvm::cast_convert_val< ToTy, const ::clang::DeclContext, const ::clang::DeclContext >::doit
static const ToTy & doit(const ::clang::DeclContext &Val)
Definition: DeclBase.h:2586
int
__device__ int
Definition: __clang_hip_libdevice_declares.h:63
clang::Decl::isUsed
bool isUsed(bool CheckUsedAttr=true) const
Whether any (re-)declaration of the entity was used, meaning that a definition is required.
Definition: DeclBase.cpp:443
AttrIterator.h
clang::DeclContext::filtered_decl_iterator::difference_type
std::iterator_traits< DeclContext::decl_iterator >::difference_type difference_type
Definition: DeclBase.h:2234
clang::Decl::getLexicalDeclContext
const DeclContext * getLexicalDeclContext() const
Definition: DeclBase.h:848
clang::Decl::getIdentifierNamespace
unsigned getIdentifierNamespace() const
Definition: DeclBase.h:814
clang::Decl::isTemplateParameterPack
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack.
Definition: DeclBase.cpp:201
clang::Decl::setTopLevelDeclInObjCContainer
void setTopLevelDeclInObjCContainer(bool V=true)
Definition: DeclBase.h:602
clang::DeclContext::decl_iterator::decl_iterator
decl_iterator()=default
clang::Decl::redecl_iterator::difference_type
std::ptrdiff_t difference_type
Definition: DeclBase.h:936
clang::DeclContext::setHasExternalLexicalStorage
void setHasExternalLexicalStorage(bool ES=true) const
State whether this DeclContext has external storage for declarations lexically in this context.
Definition: DeclBase.h:2436
clang::DeclContext::dumpDeclContext
void dumpDeclContext() const
Definition: DeclPrinter.cpp:217
clang::Decl::getOwningModuleForLinkage
Module * getOwningModuleForLinkage(bool IgnoreLinkage=false) const
Get the module that owns this declaration for linkage purposes.
Definition: Decl.cpp:1522
clang::Decl::getLangOpts
const LangOptions & getLangOpts() const LLVM_READONLY
Helper to get the language options from the ASTContext.
Definition: DeclBase.cpp:420
clang::Decl::setIsUsed
void setIsUsed()
Set whether the declaration is used, in the sense of odr-use.
Definition: DeclBase.h:578
clang::tooling::X
static ToolExecutorPluginRegistry::Add< AllTUsToolExecutorPlugin > X("all-TUs", "Runs FrontendActions on all TUs in the compilation database. " "Tool results are stored in memory.")
clang::Decl::getAttr
T * getAttr() const
Definition: DeclBase.h:543
clang::DeclContext::filtered_decl_iterator::operator++
filtered_decl_iterator operator++(int)
Definition: DeclBase.h:2260
clang::PrintingPolicy
Describes how types, statements, expressions, and declarations should be printed.
Definition: PrettyPrinter.h:59
clang::DeclContext::isInlineNamespace
bool isInlineNamespace() const
Definition: DeclBase.cpp:1121
clang::DeclContext::using_directives
udir_range using_directives() const
Returns iterator range [First, Last) of UsingDirectiveDecls stored within this context.
Definition: DeclBase.cpp:1932
clang::DeclContext::getLexicalParent
DeclContext * getLexicalParent()
getLexicalParent - Returns the containing lexical DeclContext.
Definition: DeclBase.h:1876
clang::DeclContext::getLookupParent
const DeclContext * getLookupParent() const
Definition: DeclBase.h:1885
clang::DeclContext::ObjCMethodDeclBits
ObjCMethodDeclBitfields ObjCMethodDeclBits
Definition: DeclBase.h:1803
clang::DeclContext::classof
static bool classof(const Decl *D)
Definition: DeclBase.cpp:1067
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3546
clang::Decl::isTopLevelDeclInObjCContainer
bool isTopLevelDeclInObjCContainer() const
Whether this declaration is a top-level declaration (function, global variable, etc....
Definition: DeclBase.h:598
llvm::PointerLikeTypeTraits<::clang::NamedDecl * >::getFromVoidPointer
static inline ::clang::NamedDecl * getFromVoidPointer(void *P)
Definition: DeclBase.h:1230
clang::Decl::isDeprecated
bool isDeprecated(std::string *Message=nullptr) const
Determine whether this declaration is marked 'deprecated'.
Definition: DeclBase.h:685
llvm::cast_convert_val< ::clang::DeclContext, FromTy, FromTy >::doit
::clang::DeclContext & doit(const FromTy &Val)
Definition: DeclBase.h:2616
clang::DeclarationName
The name of a declaration.
Definition: DeclarationName.h:145
clang::Decl::isReferenced
bool isReferenced() const
Whether any declaration of this entity was referenced.
Definition: DeclBase.cpp:468
clang::DeclContext::isClosure
bool isClosure() const
Definition: DeclBase.h:1893
clang::DeclContextLookupResult::begin
iterator begin()
Definition: DeclBase.h:1306
clang::Decl::isLocalExternDecl
bool isLocalExternDecl()
Determine whether this is a block-scope declaration with linkage.
Definition: DeclBase.h:1092
clang::Decl::markUsed
void markUsed(ASTContext &C)
Mark the declaration used, in the sense of odr-use.
Definition: DeclBase.cpp:458
clang::DeclContext::specific_decl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:2157
clang::Decl::redecl_iterator::operator*
reference operator*() const
Definition: DeclBase.h:941
clang::Decl::OBJC_TQ_Byref
@ OBJC_TQ_Byref
Definition: DeclBase.h:207
clang::Decl::hasTagIdentifierNamespace
bool hasTagIdentifierNamespace() const
Definition: DeclBase.h:824
clang::DeclContext::udir_iterator
Definition: DeclBase.h:2390
clang::SourceManager
This class handles loading and caching of source files into memory.
Definition: SourceManager.h:626
clang::DeclContext::decls_empty
bool decls_empty() const
Definition: DeclBase.cpp:1425
clang::DeclContext::decl_iterator::operator++
decl_iterator & operator++()
Definition: DeclBase.h:2091
clang::Decl::getModuleOwnershipKind
ModuleOwnershipKind getModuleOwnershipKind() const
Get the kind of module ownership for this declaration.
Definition: DeclBase.h:801
llvm::cast_convert_val< ToTy, const ::clang::DeclContext *, const ::clang::DeclContext * >::doit
static const ToTy * doit(const ::clang::DeclContext *Val)
Definition: DeclBase.h:2601
clang::Decl::IDNS_TagFriend
@ IDNS_TagFriend
This declaration is a friend class.
Definition: DeclBase.h:160
clang::Decl::attr_end
attr_iterator attr_end() const
Definition: DeclBase.h:513
clang::DeclContext::getNonTransparentContext
DeclContext * getNonTransparentContext()
Definition: DeclBase.cpp:1220
clang::DeclContext::specific_decl_iterator::reference
void reference
Definition: DeclBase.h:2153
clang::Decl::getAvailability
AvailabilityResult getAvailability(std::string *Message=nullptr, VersionTuple EnclosingVersion=VersionTuple(), StringRef *RealizedPlatform=nullptr) const
Determine the availability of the given declaration.
Definition: DeclBase.cpp:622
clang::Decl::OBJC_TQ_Bycopy
@ OBJC_TQ_Bycopy
Definition: DeclBase.h:206
clang::Decl::isWeakImported
bool isWeakImported() const
Determine whether this is a weak-imported symbol.
Definition: DeclBase.cpp:717
clang::DeclContext::noload_decls
decl_range noload_decls() const
noload_decls_begin/end - Iterate over the declarations stored in this context that are currently load...
Definition: DeclBase.h:2123
clang::Decl::ModuleOwnershipKind
ModuleOwnershipKind
The kind of ownership a declaration has, for visibility purposes.
Definition: DeclBase.h:219
clang::AS_none
@ AS_none
Definition: Specifiers.h:103
clang::DeclListNode::iterator::end
iterator end()
Definition: DeclBase.h:1283
clang::DeclContext::InEnclosingNamespaceSetOf
bool InEnclosingNamespaceSetOf(const DeclContext *NS) const
Test if this context is part of the enclosing namespace set of the context NS, as defined in C++0x [n...
Definition: DeclBase.cpp:1817
clang::DeclContext::specific_decl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:2176
size_t
__SIZE_TYPE__ size_t
The unsigned integer type of the result of the sizeof operator.
Definition: opencl-c-base.h:102
clang::Decl::getFunctionType
const FunctionType * getFunctionType(bool BlocksToo=true) const
Looks through the Decl's underlying type to extract a FunctionType when possible.
Definition: DeclBase.cpp:1005
clang::Decl::isThisDeclarationReferenced
bool isThisDeclarationReferenced() const
Whether this declaration was referenced.
Definition: DeclBase.h:591
clang::DeclContext::lookups_range
llvm::iterator_range< all_lookups_iterator > lookups_range
Definition: DeclBase.h:2366
clang::DeclListNode::iterator::operator*
reference operator*() const
Definition: DeclBase.h:1259
clang::DeclContext::BuildDeclChain
static std::pair< Decl *, Decl * > BuildDeclChain(ArrayRef< Decl * > Decls, bool FieldsAlreadyLoaded)
Build up a chain of declarations.
Definition: DeclBase.cpp:1320
clang::Decl::getLexicalDeclContext
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC).
Definition: DeclBase.h:843
clang::DeclContext::setUseQualifiedLookup
bool setUseQualifiedLookup(bool use=true) const
Definition: DeclBase.h:2461
llvm::cast_convert_val< ::clang::DeclContext, FromTy *, FromTy * >::doit
::clang::DeclContext * doit(const FromTy *Val)
Definition: DeclBase.h:2623
clang::DeclContext::filtered_decl_iterator::reference
void reference
Definition: DeclBase.h:2231
V
#define V(N, I)
Definition: ASTContext.h:3113
clang::TranslationUnitDecl
The top declaration context.
Definition: Decl.h:82
clang::Decl::getGlobalID
unsigned getGlobalID() const
Retrieve the global declaration ID associated with this declaration, which specifies where this Decl ...
Definition: DeclBase.h:720
clang::Decl::Kind
Kind
Lists the kind of concrete classes of Decl.
Definition: DeclBase.h:92
clang::Decl::getIdentifierNamespaceForKind
static unsigned getIdentifierNamespaceForKind(Kind DK)
Definition: DeclBase.cpp:736
clang::Decl::isFunctionOrFunctionTemplate
bool isFunctionOrFunctionTemplate() const
Whether this declaration is a function or function template.
Definition: DeclBase.h:1042
clang::DeclContext::decl_iterator::operator==
friend bool operator==(decl_iterator x, decl_iterator y)
Definition: DeclBase.h:2102
clang::DeclContext::specific_decl_iterator::specific_decl_iterator
specific_decl_iterator(DeclContext::decl_iterator C)
specific_decl_iterator - Construct a new iterator over a subset of the declarations the range [C,...
Definition: DeclBase.h:2169
clang::DeclContext::noload_lookups_begin
all_lookups_iterator noload_lookups_begin() const
Iterators over all possible lookups within this context that are currently loaded; don't attempt to r...
clang::DeclContext::FirstDecl
Decl * FirstDecl
FirstDecl - The first declaration stored within this declaration context.
Definition: DeclBase.h:1834
clang::AR_Available
@ AR_Available
Definition: DeclBase.h:76
clang::Module
Describes a module or submodule.
Definition: Module.h:96
clang::DeclContext::isObjCContainer
bool isObjCContainer() const
Definition: DeclBase.h:1899
clang::DeclContext::lookups
lookups_range lookups() const
Definition: DeclLookups.h:75
clang::Decl::IdentifierNamespace
IdentifierNamespace
IdentifierNamespace - The different namespaces in which declarations may appear.
Definition: DeclBase.h:118
clang::Linkage
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have.
Definition: Linkage.h:23
clang::Decl::getAccess
AccessSpecifier getAccess() const
Definition: DeclBase.h:478
Node
DynTypedNode Node
Definition: ASTMatchFinder.cpp:67
clang::Decl::specific_attrs
llvm::iterator_range< specific_attr_iterator< T > > specific_attrs() const
Definition: DeclBase.h:529
clang::BlockDecl
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:4153
clang::Decl::getNextDeclInContext
const Decl * getNextDeclInContext() const
Definition: DeclBase.h:437
clang::Decl::getKind
Kind getKind() const
Definition: DeclBase.h:433
clang::DeclListNode::iterator::pointer
void pointer
Definition: DeclBase.h:1253
clang::Decl::getNonClosureContext
Decl * getNonClosureContext()
Find the innermost non-closure ancestor of this declaration, walking up through blocks,...
Definition: DeclBase.cpp:1045
clang::Decl::ModuleOwnershipKind::VisibleWhenImported
@ VisibleWhenImported
This declaration has an owning module, and is visible when that module is imported.
clang::DeclContext::getEnclosingNamespaceContext
DeclContext * getEnclosingNamespaceContext()
Retrieve the nearest enclosing namespace context.
Definition: DeclBase.cpp:1798
clang::Decl::setAccess
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:473
clang::Decl::NextInContextAndBits
llvm::PointerIntPair< Decl *, 2, ModuleOwnershipKind > NextInContextAndBits
The next declaration within the same lexical DeclContext.
Definition: DeclBase.h:245
clang::Decl::printGroup
static void printGroup(Decl **Begin, unsigned NumDecls, raw_ostream &Out, const PrintingPolicy &Policy, unsigned Indentation=0)
Definition: DeclPrinter.cpp:185
clang::DeclContext::specific_decl_iterator::operator++
specific_decl_iterator operator++(int)
Definition: DeclBase.h:2184
clang::DeclContext::getDeclKind
Decl::Kind getDeclKind() const
Definition: DeclBase.h:1853
clang::DeclContext::specific_decl_iterator::pointer
void pointer
Definition: DeclBase.h:2154
clang::Decl::FOK_None
@ FOK_None
Not a friend object.
Definition: DeclBase.h:1134
clang::Decl::isInStdNamespace
bool isInStdNamespace() const
Definition: DeclBase.cpp:394
clang::Decl::setModuleOwnershipKind
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:806
clang::StoredDeclsMap
Definition: DeclContextInternals.h:297
clang::SourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:222
clang::Decl::ObjCDeclQualifier
ObjCDeclQualifier
ObjCDeclQualifier - 'Qualifiers' written next to the return and parameter types in method declaration...
Definition: DeclBase.h:201
clang::DeclContext::decl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:2080
clang::Decl::setAttrs
void setAttrs(const AttrVec &Attrs)
Definition: DeclBase.h:491
clang::DeclContext::filtered_decl_iterator::filtered_decl_iterator
filtered_decl_iterator()=default
clang::Decl::getBodyRBrace
SourceLocation getBodyRBrace() const
getBodyRBrace - Gets the right brace of the body, if a body exists.
Definition: DeclBase.cpp:951
clang::DeclListNode::iterator::difference_type
ptrdiff_t difference_type
Definition: DeclBase.h:1251
clang::DeclContext::setHasExternalVisibleStorage
void setHasExternalVisibleStorage(bool ES=true) const
State whether this DeclContext has external storage for declarations visible in this context.
Definition: DeclBase.h:2448
clang::index::SymbolKind::Module
@ Module
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:211
clang::DeclContext::filtered_decl_iterator::operator!=
friend bool operator!=(const filtered_decl_iterator &x, const filtered_decl_iterator &y)
Definition: DeclBase.h:2271
clang::PrettyStackTraceDecl
PrettyStackTraceDecl - If a crash occurs, indicate that it happened when doing something to a specifi...
Definition: DeclBase.h:1210
clang::DeclContextLookupResult::front
reference front() const
Definition: DeclBase.h:1315
clang::Decl::FOK_Undeclared
@ FOK_Undeclared
A friend of a previously-undeclared entity.
Definition: DeclBase.h:1136
clang::StoredDeclsList
An array of decls optimized for the common case of only containing one entry.
Definition: DeclContextInternals.h:33
clang::DeclContext::lookups_end
all_lookups_iterator lookups_end() const
clang::DeclContext::isLookupContext
bool isLookupContext() const
Test whether the context supports looking up names.
Definition: DeclBase.h:1925
clang::DeclListNode::iterator::operator++
iterator operator++(int)
Definition: DeclBase.h:1277
clang::Decl::FromASTFile
unsigned FromASTFile
Whether this declaration was loaded from an AST file.
Definition: DeclBase.h:329
clang::ASTDumpOutputFormat
ASTDumpOutputFormat
Used to specify the format for printing AST dump information.
Definition: ASTDumperUtils.h:21
clang::Decl::getDefiningAttr
const Attr * getDefiningAttr() const
Return this declaration's defining attribute if it has one.
Definition: DeclBase.cpp:506
ASTDumperUtils.h
llvm::cast_convert_val< ToTy, ::clang::DeclContext *, ::clang::DeclContext * >::doit
static ToTy * doit(::clang::DeclContext *Val)
Definition: DeclBase.h:2608
clang::Decl::updateOutOfDate
void updateOutOfDate(IdentifierInfo &II) const
Update a potentially out-of-date declaration.
Definition: DeclBase.cpp:63
clang::DeclContext::makeDeclVisibleInContext
void makeDeclVisibleInContext(NamedDecl *D)
Makes a declaration visible within this context.
Definition: DeclBase.cpp:1835
clang::DeclContext::isTransparentContext
bool isTransparentContext() const
isTransparentContext - Determines whether this context is a "transparent" context,...
Definition: DeclBase.cpp:1174
clang::Decl::isInvalidDecl
bool isInvalidDecl() const
Definition: DeclBase.h:558
clang::DeclContext::ddiags
ddiag_range ddiags() const
Definition: DependentDiagnostic.h:175
clang::ASTMutationListener
An abstract interface that should be implemented by listeners that want to be notified when an AST en...
Definition: ASTMutationListener.h:46
clang::DeclContextLookupResult::DeclContextLookupResult
DeclContextLookupResult()=default
clang::DeclContext::shouldUseQualifiedLookup
bool shouldUseQualifiedLookup() const
Definition: DeclBase.h:2467
clang::DeclContext::containsDecl
bool containsDecl(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1432
clang::DeclContext::specific_decl_iterator::operator++
specific_decl_iterator & operator++()
Definition: DeclBase.h:2178
clang::DeclContext::filtered_decl_iterator::pointer
void pointer
Definition: DeclBase.h:2232
clang::Decl::getMostRecentDeclImpl
virtual Decl * getMostRecentDeclImpl()
Implementation of getMostRecentDecl(), to be overridden by any subclass that has a redeclaration chai...
Definition: DeclBase.h:922
clang::Decl::getCanonicalDecl
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:901
clang::Decl::operator=
Decl & operator=(const Decl &)=delete
clang::Decl::EnableStatistics
static void EnableStatistics()
Definition: DeclBase.cpp:165
clang::Decl::redecl_iterator::operator++
redecl_iterator operator++(int)
Definition: DeclBase.h:953
clang::DeclContext::decl_iterator
decl_iterator - Iterates through the declarations stored within this context.
Definition: DeclBase.h:2072
clang::DeclListNode::iterator::operator==
bool operator==(const iterator &X) const
Definition: DeclBase.h:1266
IdentifierTable.h
clang::DeclContext::isTranslationUnit
bool isTranslationUnit() const
Definition: DeclBase.h:1935
clang::Decl::isModulePrivate
bool isModulePrivate() const
Whether this declaration was marked as being private to the module in which it was defined.
Definition: DeclBase.h:612
clang::Decl::redecl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:935
clang::ObjCMethodFamilyBitWidth
@ ObjCMethodFamilyBitWidth
Definition: IdentifierTable.h:689
clang::DeclContext::isStdNamespace
bool isStdNamespace() const
Definition: DeclBase.cpp:1126
clang::DeclContext::specific_decl_iterator::operator==
friend bool operator==(const specific_decl_iterator &x, const specific_decl_iterator &y)
Definition: DeclBase.h:2190
clang::DeclContext::filtered_decl_iterator::operator==
friend bool operator==(const filtered_decl_iterator &x, const filtered_decl_iterator &y)
Definition: DeclBase.h:2266
clang::DeclContext::noload_lookups
lookups_range noload_lookups(bool PreserveInternalState) const
Definition: DeclLookups.h:89
clang::DeclContext::containsDeclAndLoad
bool containsDeclAndLoad(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1437
clang::TemplateParameterList
Stores a list of template parameters for a TemplateDecl and its derived classes.
Definition: DeclTemplate.h:69
clang::DeclListNode::Decls
llvm::PointerUnion< NamedDecl *, DeclListNode * > Decls
Definition: DeclBase.h:1243
clang::Decl::redecl_iterator
Iterates through all the redeclarations of the same decl.
Definition: DeclBase.h:926
clang::DeclContext::ddiag_range
llvm::iterator_range< DeclContext::ddiag_iterator > ddiag_range
Definition: DeclBase.h:2403
clang::Decl::setVisibleDespiteOwningModule
void setVisibleDespiteOwningModule()
Set that this declaration is globally visible, even if it came from a module that is not visible.
Definition: DeclBase.h:795
clang::DeclContext::isNamespace
bool isNamespace() const
Definition: DeclBase.h:1944
clang::Decl::redecls
redecl_range redecls() const
Returns an iterator range for all the redeclarations of the same decl.
Definition: DeclBase.h:972
clang::DeclContextLookupResult::find_first
T * find_first() const
Definition: DeclBase.h:1321
clang::cast_convert_decl_context< ToTy, true >::doit
static ToTy * doit(DeclContext *Val)
Definition: DeclBase.h:2565
clang::Decl::setNonMemberOperator
void setNonMemberOperator()
Specifies that this declaration is a C++ overloaded non-member.
Definition: DeclBase.h:1152
clang::DeclContext::getOuterLexicalRecordContext
const RecordDecl * getOuterLexicalRecordContext() const
Definition: DeclBase.h:2033
clang::DeclContext::decl_iterator::operator!=
friend bool operator!=(decl_iterator x, decl_iterator y)
Definition: DeclBase.h:2106
clang::DeclContext::getLookupParent
DeclContext * getLookupParent()
Find the parent context of this context that will be used for unqualified name lookup.
Definition: DeclBase.cpp:1093
clang::Decl::dump
void dump() const
Definition: ASTDumper.cpp:186
clang::ASTWriter
Writes an AST file containing the contents of a translation unit.
Definition: ASTWriter.h:99
clang::DeclContext::isRecord
bool isRecord() const
Definition: DeclBase.h:1939
clang::Decl::getMostRecentDecl
const Decl * getMostRecentDecl() const
Retrieve the most recent declaration that declares the same entity as this declaration (which may be ...
Definition: DeclBase.h:1003
clang::Decl::setImplicit
void setImplicit(bool I=true)
Definition: DeclBase.h:564
clang::Decl::getCanonicalDecl
const Decl * getCanonicalDecl() const
Definition: DeclBase.h:902
clang::DeclContext::isDeclInLexicalTraversal
bool isDeclInLexicalTraversal(const Decl *D) const
Determine whether the given declaration is stored in the list of declarations lexically within this c...
Definition: DeclBase.h:2456
x
IRgen optimization opportunities The common pattern of short x
Definition: README.txt:7
clang::Decl::castToDeclContext
static DeclContext * castToDeclContext(const Decl *)
Definition: DeclBase.cpp:932
clang::Decl::isImplicit
bool isImplicit() const
isImplicit - Indicates whether the declaration was implicitly generated by the implementation.
Definition: DeclBase.h:563
clang::Decl::getOwningModule
Module * getOwningModule() const
Get the module that owns this declaration (for visibility purposes).
Definition: DeclBase.h:773
clang::Decl::IDNS_Member
@ IDNS_Member
Members, declared with object declarations within tag definitions.
Definition: DeclBase.h:139
clang::Decl::canBeWeakImported
bool canBeWeakImported(bool &IsDefinition) const
Determines whether this symbol can be weak-imported, e.g., whether it would be well-formed to add the...
Definition: DeclBase.cpp:688
clang::Decl::dropAttr
void dropAttr()
Definition: DeclBase.h:518
clang::Decl::IDNS_OMPMapper
@ IDNS_OMPMapper
This declaration is an OpenMP user defined mapper.
Definition: DeclBase.h:184
clang::Decl::IDNS_Ordinary
@ IDNS_Ordinary
Ordinary names.
Definition: DeclBase.h:147
clang::Decl::hasDefiningAttr
bool hasDefiningAttr() const
Return true if this declaration has an attribute which acts as definition of the entity,...
Definition: DeclBase.cpp:501
clang::DeclContext::filtered_decl_iterator::operator*
value_type operator*() const
Definition: DeclBase.h:2251
clang::Decl::getTranslationUnitDecl
const TranslationUnitDecl * getTranslationUnitDecl() const
Definition: DeclBase.h:459
clang::Decl::ModuleOwnershipKind::Visible
@ Visible
This declaration has an owning module, but is globally visible (typically because its owning module i...
clang::Decl::castFromDeclContext
static Decl * castFromDeclContext(const DeclContext *)
Definition: DeclBase.cpp:913
clang::Decl::getTranslationUnitDecl
TranslationUnitDecl * getTranslationUnitDecl()
Definition: DeclBase.cpp:399
clang::Decl::redecl_iterator::redecl_iterator
redecl_iterator(Decl *C)
Definition: DeclBase.h:939
clang::Decl::redecl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:942
llvm::cast_convert_val< const ::clang::DeclContext, FromTy *, FromTy * >::doit
static const ::clang::DeclContext * doit(const FromTy *Val)
Definition: DeclBase.h:2637
clang::Decl::IDNS_Namespace
@ IDNS_Namespace
Namespaces, declared with 'namespace foo {}'.
Definition: DeclBase.h:143
clang::AccessSpecifier
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:99
clang::DeclContext::filtered_decl_iterator::operator++
filtered_decl_iterator & operator++()
Definition: DeclBase.h:2254
clang::Decl::getSourceRange
virtual SourceRange getSourceRange() const LLVM_READONLY
Source range that this declaration covers.
Definition: DeclBase.h:418
clang::DeclContext::specific_decl_iterator::value_type
SpecificDecl * value_type
Definition: DeclBase.h:2150
clang::Decl::isInIdentifierNamespace
bool isInIdentifierNamespace(unsigned NS) const
Definition: DeclBase.h:818
clang::DeclContext::DeclContext
DeclContext(Decl::Kind K)
Definition: DeclBase.cpp:1057
clang::Decl::setLocation
void setLocation(SourceLocation L)
Definition: DeclBase.h:431
clang::Decl::OBJC_TQ_In
@ OBJC_TQ_In
Definition: DeclBase.h:203
SourceLocation.h
clang::DeclContext::getRedeclContext
DeclContext * getRedeclContext()
getRedeclContext - Retrieve the context in which an entity conflicts with other entities of the same ...
Definition: DeclBase.cpp:1780
clang::Decl::CacheValidAndLinkage
unsigned CacheValidAndLinkage
If 0, we have not computed the linkage of this declaration.
Definition: DeclBase.h:336
P
StringRef P
Definition: ASTMatchersInternal.cpp:563
clang::DeclContext::DeclContextBits
DeclContextBitfields DeclContextBits
Definition: DeclBase.h:1796
clang::Decl::getPreviousDecl
Decl * getPreviousDecl()
Retrieve the previous declaration that declares the same entity as this declaration,...
Definition: DeclBase.h:984
clang::Decl::getFriendObjectKind
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so,...
Definition: DeclBase.h:1143
clang::Decl::hasAttrs
bool hasAttrs() const
Definition: DeclBase.h:489
clang::DeclContext::getPrimaryContext
const DeclContext * getPrimaryContext() const
Definition: DeclBase.h:2013
clang::Decl::isFromASTFile
bool isFromASTFile() const
Determine whether this declaration came from an AST file (such as a precompiled header or module) rat...
Definition: DeclBase.h:716
clang::DeclContext::LinkageSpecDeclBits
LinkageSpecDeclBitfields LinkageSpecDeclBits
Definition: DeclBase.h:1805
clang::DeclContext::lookup_iterator
lookup_result::iterator lookup_iterator
Definition: DeclBase.h:2320
false
#define false
Definition: stdbool.h:17
clang::Language
Language
The language for the input, used to select and validate the language standard and possible actions.
Definition: LangStandard.h:19
clang::DeclContext::getDeclKindName
const char * getDeclKindName() const
Definition: DeclBase.cpp:155
clang::DeclContext::filtered_decl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:2235
clang::Decl::IDNS_Label
@ IDNS_Label
Labels, declared with 'x:' and referenced with 'goto x'.
Definition: DeclBase.h:120
clang::DeclContext::decl_range
llvm::iterator_range< decl_iterator > decl_range
Definition: DeclBase.h:2111
clang::DeclContext::udir_iterator::operator*
UsingDirectiveDecl * operator*() const
Definition: DeclBase.cpp:1926
clang::DeclContext::addDecl
void addDecl(Decl *D)
Add the declaration D into this context.
Definition: DeclBase.cpp:1559
clang::Decl::Access
unsigned Access
Access - Used by C++ decls for the access specifier.
Definition: DeclBase.h:326
clang::Decl::getDescribedTemplate
TemplateDecl * getDescribedTemplate() const
If this is a declaration that describes some template, this method returns that template declaration.
Definition: DeclBase.cpp:230
clang::DeclContext::getParent
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1860
clang::Decl::IDNS_OMPReduction
@ IDNS_OMPReduction
This declaration is an OpenMP user defined reduction construction.
Definition: DeclBase.h:181
clang::DeclContext::~DeclContext
~DeclContext()
clang::TemplateDecl
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:399
clang::DeclListNode::iterator::reference
value_type reference
Definition: DeclBase.h:1254
clang::DeclContext::dumpLookups
void dumpLookups() const
Definition: ASTDumper.cpp:211
Begin
SourceLocation Begin
Definition: USRLocFinder.cpp:165
llvm::ArrayRef
Definition: LLVM.h:34
clang::cast_convert_decl_context
Definition: DeclBase.h:2548
clang::Decl::attr_begin
attr_iterator attr_begin() const
Definition: DeclBase.h:510
clang::Decl::Decl
Decl(Kind DK, DeclContext *DC, SourceLocation L)
Definition: DeclBase.h:380
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:89
clang::Decl::isTemplated
bool isTemplated() const
Determine whether this declaration is a templated entity (whether it is.
Definition: DeclBase.cpp:253
clang::Decl::getTemplateDepth
unsigned getTemplateDepth() const
Determine the number of levels of template parameter surrounding this declaration.
Definition: DeclBase.cpp:265
clang::DeclContext::decl_iterator::operator++
decl_iterator operator++(int)
Definition: DeclBase.h:2096
clang::DeclContext::specific_decl_iterator::operator!=
friend bool operator!=(const specific_decl_iterator &x, const specific_decl_iterator &y)
Definition: DeclBase.h:2195
clang::Decl::redecl_iterator::redecl_iterator
redecl_iterator()=default
clang::Decl::IDNS_ObjCProtocol
@ IDNS_ObjCProtocol
Objective C @protocol.
Definition: DeclBase.h:150
clang::DeclContext::getOuterLexicalRecordContext
RecordDecl * getOuterLexicalRecordContext()
Retrieve the outermost lexically enclosing record context.
Definition: DeclBase.cpp:1806
clang::DeclListNode::iterator::operator->
void operator->() const
Definition: DeclBase.h:1265
clang::Decl::IDNS_NonMemberOperator
@ IDNS_NonMemberOperator
This declaration is a C++ operator declared in a non-class context.
Definition: DeclBase.h:171
clang::Decl::FOK_Declared
@ FOK_Declared
A friend of a previously-declared entity.
Definition: DeclBase.h:1135
LLVM.h
clang::DeclContext::isExternCXXContext
bool isExternCXXContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1206
clang::DeclContextLookupResult::end
iterator end()
Definition: DeclBase.h:1307
clang::Decl::IdentifierNamespace
unsigned IdentifierNamespace
IdentifierNamespace - This specifies what IDNS_* namespace this lives in.
Definition: DeclBase.h:332
clang::Decl::getExternalSourceSymbolAttr
ExternalSourceSymbolAttr * getExternalSourceSymbolAttr() const
Looks on this and related declarations for an applicable external source symbol attribute.
Definition: DeclBase.cpp:480
clang::Decl::redecl_iterator::operator!=
friend bool operator!=(redecl_iterator x, redecl_iterator y)
Definition: DeclBase.h:963
clang::Decl::attrs
attr_range attrs() const
Definition: DeclBase.h:506
clang::DeclContext::specific_decl_iterator::operator*
value_type operator*() const
Definition: DeclBase.h:2173
clang::Decl::Decl
Decl(Kind DK, EmptyShell Empty)
Definition: DeclBase.h:390
clang::Decl::getPreviousDecl
const Decl * getPreviousDecl() const
Retrieve the previous declaration that declares the same entity as this declaration,...
Definition: DeclBase.h:988
clang::Decl::setCachedLinkage
void setCachedLinkage(Linkage L) const
Definition: DeclBase.h:408
clang::cast_convert_decl_context::doit
static ToTy * doit(DeclContext *Val)
Definition: DeclBase.h:2553
clang::DeclContext::Encloses
bool Encloses(const DeclContext *DC) const
Determine whether this declaration context encloses the declaration context DC.
Definition: DeclBase.cpp:1210
clang::Decl::attr_iterator
AttrVec::const_iterator attr_iterator
Definition: DeclBase.h:503
clang::DeclContext::filtered_decl_iterator
Iterates over a filtered subrange of declarations stored in a DeclContext.
Definition: DeclBase.h:2211
clang::DeclContext::isFileContext
bool isFileContext() const
Definition: DeclBase.h:1930
clang::DeclContext::noload_lookup
lookup_result noload_lookup(DeclarationName Name)
Find the declarations with the given name that are visible within this context; don't attempt to retr...
Definition: DeclBase.cpp:1710
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:67
clang::DeclListNode::iterator::value_type
NamedDecl * value_type
Definition: DeclBase.h:1252
clang::DeclContext::noload_lookups_end
all_lookups_iterator noload_lookups_end() const
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:58
clang::Decl::setObjectOfFriendDecl
void setObjectOfFriendDecl(bool PerformFriendInjection=false)
Changes the namespace of this declaration to reflect that it's the object of a friend declaration.
Definition: DeclBase.h:1103
clang::DeclContext::decl_iterator::difference_type
std::ptrdiff_t difference_type
Definition: DeclBase.h:2081
clang::DeclContext::getInnermostBlockDecl
const BlockDecl * getInnermostBlockDecl() const
Return this DeclContext if it is a BlockDecl.
Definition: DeclBase.cpp:1109
clang::Decl::setModulePrivate
void setModulePrivate()
Specify that this declaration was marked as being private to the module in which it was defined.
Definition: DeclBase.h:626
clang::ASTReader
Reads an AST files chain containing the contents of a translation unit.
Definition: ASTReader.h:342
clang::DeclContext::collectAllContexts
void collectAllContexts(SmallVectorImpl< DeclContext * > &Contexts)
Collects all of the declaration contexts that are semantically connected to this declaration context.
Definition: DeclBase.cpp:1306
clang::Decl::getBody
virtual Stmt * getBody() const
getBody - If this Decl represents a declaration for a body of code, such as a function or method defi...
Definition: DeclBase.h:1010
clang::DeclListNode::iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:1255
llvm::isa_impl< To, ::clang::DeclContext >::doit
static bool doit(const ::clang::DeclContext &Val)
Definition: DeclBase.h:2577
clang::Decl::hasOwningModule
bool hasOwningModule() const
Is this declaration owned by some module?
Definition: DeclBase.h:768
clang::DeclContext::ddiag_iterator
An iterator over the dependent diagnostics in a dependent context.
Definition: DependentDiagnostic.h:125
DeclarationName.h
clang::DeclContext::setMustBuildLookupTable
void setMustBuildLookupTable()
Mark that there are external lexical declarations that we need to include in our lookup table (and th...
Definition: DeclBase.h:2415
clang::Decl::isUnconditionallyVisible
bool isUnconditionallyVisible() const
Determine whether this declaration is definitely visible to name lookup, independent of whether the o...
Definition: DeclBase.h:789
clang::PrettyStackTraceDecl::print
void print(raw_ostream &OS) const override
Definition: DeclBase.cpp:300
clang::Decl::setOwningModuleID
void setOwningModuleID(unsigned ID)
Set the owning module ID.
Definition: DeclBase.h:644
clang::DeclContext::classof
static bool classof(const DeclContext *D)
Definition: DeclBase.h:2472
clang::DependentDiagnostic
A dependently-generated diagnostic.
Definition: DependentDiagnostic.h:36
clang::Decl::~Decl
virtual ~Decl()
clang::AR_NotYetIntroduced
@ AR_NotYetIntroduced
Definition: DeclBase.h:77
clang::Decl::isParameterPack
bool isParameterPack() const
Whether this declaration is a parameter pack.
Definition: DeclBase.cpp:211
clang::Builtin::ID
ID
Definition: Builtins.h:48
clang::DeclListNode
A list storing NamedDecls in the lookup tables.
Definition: DeclBase.h:1239
clang::AR_Unavailable
@ AR_Unavailable
Definition: DeclBase.h:79
clang
Definition: CalledOnceCheck.h:17
clang::DeclContext::lookup
lookup_result lookup(DeclarationName Name) const
lookup - Find the declarations (if any) with the given Name in this context.
Definition: DeclBase.cpp:1645
clang::Decl::getDeclContext
const DeclContext * getDeclContext() const
Definition: DeclBase.h:444
clang::Decl::OBJC_TQ_CSNullability
@ OBJC_TQ_CSNullability
The nullability qualifier is set when the nullability of the result or parameter was expressed via a ...
Definition: DeclBase.h:213
clang::DeclContext::buildLookup
StoredDeclsMap * buildLookup()
Ensure the lookup structure is fully-built and return it.
Definition: DeclBase.cpp:1582
clang::Decl::isTagIdentifierNamespace
static bool isTagIdentifierNamespace(unsigned NS)
Definition: DeclBase.h:828
clang::DeclContext::filtered_decl_iterator::value_type
SpecificDecl * value_type
Definition: DeclBase.h:2228
clang::DeclContext::filtered_decl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:2252
clang::PrettyStackTraceDecl::PrettyStackTraceDecl
PrettyStackTraceDecl(const Decl *theDecl, SourceLocation L, SourceManager &sm, const char *Msg)
Definition: DeclBase.h:1217
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:68
ptrdiff_t
__PTRDIFF_TYPE__ ptrdiff_t
A signed integer type that is the result of subtracting two pointers.
Definition: opencl-c-base.h:110
clang::AvailabilityResult
AvailabilityResult
Captures the result of checking the availability of a declaration.
Definition: DeclBase.h:75
clang::Decl::print
void print(raw_ostream &Out, unsigned Indentation=0, bool PrintInstantiation=false) const
Definition: DeclPrinter.cpp:126
clang::Decl::getAccessUnsafe
AccessSpecifier getAccessUnsafe() const
Retrieve the access specifier for this declaration, even though it may not yet have been properly set...
Definition: DeclBase.h:485
clang::DeclContext::noload_decls_begin
decl_iterator noload_decls_begin() const
Definition: DeclBase.h:2126
clang::Decl::ModuleOwnershipKind::Unowned
@ Unowned
This declaration is not owned by a module.
clang::DeclContext::CXXConstructorDeclBits
CXXConstructorDeclBitfields CXXConstructorDeclBits
Definition: DeclBase.h:1802
clang::ADOF_Default
@ ADOF_Default
Definition: ASTDumperUtils.h:22
clang::Decl::isFirstDecl
bool isFirstDecl() const
True if this is the first declaration in its redeclaration chain.
Definition: DeclBase.h:993
clang::Decl::OBJC_TQ_Oneway
@ OBJC_TQ_Oneway
Definition: DeclBase.h:208
clang::ASTNodeImporter
Definition: ASTImporter.cpp:140
clang::Attr
Attr - This represents one attribute.
Definition: Attr.h:46
clang::DeclContext::udir_range
llvm::iterator_range< udir_iterator > udir_range
Definition: DeclBase.h:2396
clang::DeclContext::lookups_begin
all_lookups_iterator lookups_begin() const
Iterators over all possible lookups within this context.
clang::DeclContext::isDependentContext
bool isDependentContext() const
Determines whether this context is dependent on a template parameter.
Definition: DeclBase.cpp:1142
clang::DeclListNode::iterator::operator++
iterator & operator++()
Definition: DeclBase.h:1268
unsigned
clang::Decl::specific_attr_begin
specific_attr_iterator< T > specific_attr_begin() const
Definition: DeclBase.h:534
clang::Decl::DeclContext
friend class DeclContext
Definition: DeclBase.h:248
llvm::PointerLikeTypeTraits
Definition: DeclGroup.h:139
clang::Decl::setFromASTFile
void setFromASTFile()
Set the FromASTFile flag.
Definition: DeclBase.h:638
udir_iterator_base
clang::Decl::getAttrs
AttrVec & getAttrs()
Definition: DeclBase.h:495
clang::Decl::hasLocalOwningModuleStorage
bool hasLocalOwningModuleStorage() const
Definition: DeclBase.cpp:119
clang::Decl::CXXClassMemberWrapper
friend class CXXClassMemberWrapper
Definition: DeclBase.h:320
clang::Decl::isDefinedOutsideFunctionOrMethod
bool isDefinedOutsideFunctionOrMethod() const
isDefinedOutsideFunctionOrMethod - This predicate returns true if this scoped decl is defined outside...
Definition: DeclBase.h:874
clang::cast_convert_decl_context::doit
static const ToTy * doit(const DeclContext *Val)
Definition: DeclBase.h:2549
clang::DeclContextLookupResult
The results of name lookup within a DeclContext.
Definition: DeclBase.h:1292
clang::DeclContext::getLookupPtr
StoredDeclsMap * getLookupPtr() const
Retrieve the internal representation of the lookup structure.
Definition: DeclBase.h:2423
clang::Decl::getOwningModuleID
unsigned getOwningModuleID() const
Retrieve the global ID of the module that owns this particular declaration.
Definition: DeclBase.h:728
clang::Decl::getLocalOwningModule
Module * getLocalOwningModule() const
Get the local owning module, if known.
Definition: DeclBase.h:752
clang::Decl::EmptyShell
A placeholder type used to construct an empty shell of a decl-derived type that will be filled in lat...
Definition: DeclBase.h:105
Parent
NodeId Parent
Definition: ASTDiff.cpp:192
clang::DeclContext::isExternCContext
bool isExternCContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1191
clang::Decl::getDescribedTemplateParams
const TemplateParameterList * getDescribedTemplateParams() const
If this is a declaration that describes some template or partial specialization, this returns the cor...
Definition: DeclBase.cpp:243
clang::Decl::setInvalidDecl
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
llvm::SmallVectorImpl
Definition: LLVM.h:39
clang::DeclContext::EnumDeclBits
EnumDeclBitfields EnumDeclBits
Definition: DeclBase.h:1798
clang::Decl::OBJC_TQ_Inout
@ OBJC_TQ_Inout
Definition: DeclBase.h:204
true
#define true
Definition: stdbool.h:16
clang::Decl::redecl_iterator::operator==
friend bool operator==(redecl_iterator x, redecl_iterator y)
Definition: DeclBase.h:959
clang::DeclContext::filtered_decl_iterator::filtered_decl_iterator
filtered_decl_iterator(DeclContext::decl_iterator C)
filtered_decl_iterator - Construct a new iterator over a subset of the declarations the range [C,...
Definition: DeclBase.h:2247
clang::DeclContext::LastDecl
Decl * LastDecl
LastDecl - The last declaration stored within this declaration context.
Definition: DeclBase.h:1840
clang::ASTDeclReader
Definition: ASTReaderDecl.cpp:80
SM
#define SM(sm)
Definition: Cuda.cpp:78
clang::Decl::attr_range
llvm::iterator_range< attr_iterator > attr_range
Definition: DeclBase.h:504
clang::Decl::getVersionIntroduced
VersionTuple getVersionIntroduced() const
Retrieve the version of the target platform in which this declaration was introduced.
Definition: DeclBase.cpp:674
clang::LinkageComputer
Definition: Linkage.h:74
clang::DeclContext::udir_iterator::udir_iterator
udir_iterator(lookup_iterator I)
Definition: DeclBase.h:2391
clang::DeclContext::getEnclosingNamespaceContext
const DeclContext * getEnclosingNamespaceContext() const
Definition: DeclBase.h:2027
clang::Decl::dropAttrs
void dropAttrs()
Definition: DeclBase.cpp:878
clang::DeclContext::RecordDeclBits
RecordDeclBitfields RecordDeclBits
Definition: DeclBase.h:1799
clang::ExternalASTSource
Abstract interface for external sources of AST nodes.
Definition: ExternalASTSource.h:60
clang::DeclContext::getLexicalParent
const DeclContext * getLexicalParent() const
Definition: DeclBase.h:1879
clang::Decl::setLocalExternDecl
void setLocalExternDecl()
Changes the namespace of this declaration to reflect that it's a function-local extern declaration.
Definition: DeclBase.h:1074
clang::DeclContext::isFunctionOrMethod
bool isFunctionOrMethod() const
Definition: DeclBase.h:1912
clang::DeclListNode::iterator::iterator
iterator()=default
clang::Decl::isInLocalScopeForInstantiation
bool isInLocalScopeForInstantiation() const
Determine whether a substitution into this declaration would occur as part of a substitution into a d...
Definition: DeclBase.cpp:367
clang::ASTDeclWriter
Definition: ASTWriterDecl.cpp:34
llvm::PointerLikeTypeTraits<::clang::NamedDecl * >::getAsVoidPointer
static void * getAsVoidPointer(::clang::NamedDecl *P)
Definition: DeclBase.h:1229
clang::Decl::getLocation
SourceLocation getLocation() const
Definition: DeclBase.h:430
clang::Decl::getMaxAlignment
unsigned getMaxAlignment() const
getMaxAlignment - return the maximum alignment specified by attributes on this decl,...
Definition: DeclBase.cpp:428
clang::Decl::getID
int64_t getID() const
Definition: DeclBase.cpp:1001
clang::Decl::setReferenced
void setReferenced(bool R=true)
Definition: DeclBase.h:593
clang::Decl::addAttr
void addAttr(Attr *A)
Definition: DeclBase.cpp:885
clang::Decl::IDNS_Tag
@ IDNS_Tag
Tags, declared with 'struct foo;' and referenced with 'struct foo'.
Definition: DeclBase.h:128
clang::Decl::getPreviousDeclImpl
virtual Decl * getPreviousDeclImpl()
Implementation of getPreviousDecl(), to be overridden by any subclass that has a redeclaration chain.
Definition: DeclBase.h:918
clang::Decl::isCanonicalDecl
bool isCanonicalDecl() const
Whether this particular Decl is a canonical one.
Definition: DeclBase.h:907
clang::DeclContextLookupResult::empty
bool empty() const
Definition: DeclBase.h:1313
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1856
clang::Decl::getParentFunctionOrMethod
DeclContext * getParentFunctionOrMethod()
Definition: DeclBase.h:895
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3859
clang::DeclContext::specific_decl_iterator::difference_type
std::iterator_traits< DeclContext::decl_iterator >::difference_type difference_type
Definition: DeclBase.h:2156
clang::DeclContext::Equals
bool Equals(const DeclContext *DC) const
Determine whether this declaration context is equivalent to the declaration context DC.
Definition: DeclBase.h:1984
clang::Decl::IDNS_LocalExtern
@ IDNS_LocalExtern
This declaration is a function-local extern declaration of a variable or function.
Definition: DeclBase.h:178
clang::Decl::classofKind
static bool classofKind(Kind K)
Definition: DeclBase.h:1159
clang::Decl::setLocalOwningModule
void setLocalOwningModule(Module *M)
Definition: DeclBase.h:760
clang::DeclContext::FunctionDeclBits
FunctionDeclBitfields FunctionDeclBits
Definition: DeclBase.h:1801
clang::DeclContext::decl_iterator::decl_iterator
decl_iterator(Decl *C)
Definition: DeclBase.h:2084
clang::DeclContext::getRedeclContext
const DeclContext * getRedeclContext() const
Definition: DeclBase.h:2021
clang::Decl::OBJC_TQ_None
@ OBJC_TQ_None
Definition: DeclBase.h:202
clang::Decl::dumpColor
void dumpColor() const
Definition: ASTDumper.cpp:205
clang::specific_attr_iterator
specific_attr_iterator - Iterates over a subrange of an AttrVec, only providing attributes that are o...
Definition: AttrIterator.h:34
llvm::cast_convert_val< const ::clang::DeclContext, FromTy, FromTy >::doit
static const ::clang::DeclContext & doit(const FromTy &Val)
Definition: DeclBase.h:2630
clang::Decl::getMostRecentDecl
Decl * getMostRecentDecl()
Retrieve the most recent declaration that declares the same entity as this declaration (which may be ...
Definition: DeclBase.h:999
clang::declaresSameEntity
bool declaresSameEntity(const Decl *D1, const Decl *D2)
Determine whether two declarations declare the same entity.
Definition: DeclBase.h:1198
clang::Decl::IDNS_OrdinaryFriend
@ IDNS_OrdinaryFriend
This declaration is a friend function.
Definition: DeclBase.h:155
clang::Decl::getDeclKindName
const char * getDeclKindName() const
Definition: DeclBase.cpp:123
clang::DeclContext::TagDeclBits
TagDeclBitfields TagDeclBits
Definition: DeclBase.h:1797
clang::Decl::isInAnonymousNamespace
bool isInAnonymousNamespace() const
Definition: DeclBase.cpp:384
clang::DeclContextLookupResult::iterator
DeclListNode::iterator iterator
Definition: DeclBase.h:1302
clang::DeclContext::getNonTransparentContext
const DeclContext * getNonTransparentContext() const
Definition: DeclBase.h:2002
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:439
clang::Decl::redecls_end
redecl_iterator redecls_end() const
Definition: DeclBase.h:980
clang::DeclContext::decls_begin
decl_iterator decls_begin() const
Definition: DeclBase.cpp:1419