clang 10.0.0git

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
16 #include "clang/AST/ASTDumperUtils.h"
17 #include "clang/AST/AttrIterator.h"
18 #include "clang/AST/DeclarationName.h"
19 #include "clang/Basic/IdentifierTable.h"
20 #include "clang/Basic/LLVM.h"
21 #include "clang/Basic/SourceLocation.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 TranslationUnitDecl;
70 class UsingDirectiveDecl;
71
72 /// Captures the result of checking the availability of a
73 /// declaration.
74 enum AvailabilityResult {
75 AR_Available = 0,
76 AR_NotYetIntroduced,
77 AR_Deprecated,
78 AR_Unavailable
79 };
80
81 /// Decl - This represents one declaration (or definition), e.g. a variable,
82 /// typedef, function, struct, etc.
83 ///
84 /// Note: There are objects tacked on before the *beginning* of Decl
85 /// (and its subclasses) in its Decl::operator new(). Proper alignment
86 /// of all subclasses (not requiring more than the alignment of Decl) is
87 /// asserted in DeclBase.cpp.
88 class alignas(8) Decl {
89 public:
90 /// Lists the kind of concrete classes of Decl.
91 enum Kind {
92 #define DECL(DERIVED, BASE) DERIVED,
93 #define ABSTRACT_DECL(DECL)
94 #define DECL_RANGE(BASE, START, END) \
95 first##BASE = START, last##BASE = END,
96 #define LAST_DECL_RANGE(BASE, START, END) \
97 first##BASE = START, last##BASE = END
98 #include "clang/AST/DeclNodes.inc"
99 };
100
101 /// A placeholder type used to construct an empty shell of a
102 /// decl-derived type that will be filled in later (e.g., by some
103 /// deserialization method).
104 struct EmptyShell {};
105
106 /// IdentifierNamespace - The different namespaces in which
107 /// declarations may appear. According to C99 6.2.3, there are
108 /// four namespaces, labels, tags, members and ordinary
109 /// identifiers. C++ describes lookup completely differently:
110 /// certain lookups merely "ignore" certain kinds of declarations,
111 /// usually based on whether the declaration is of a type, etc.
112 ///
113 /// These are meant as bitmasks, so that searches in
114 /// C++ can look into the "tag" namespace during ordinary lookup.
115 ///
116 /// Decl currently provides 15 bits of IDNS bits.
117 enum IdentifierNamespace {
118 /// Labels, declared with 'x:' and referenced with 'goto x'.
119 IDNS_Label = 0x0001,
120
121 /// Tags, declared with 'struct foo;' and referenced with
122 /// 'struct foo'. All tags are also types. This is what
123 /// elaborated-type-specifiers look for in C.
124 /// This also contains names that conflict with tags in the
125 /// same scope but that are otherwise ordinary names (non-type
126 /// template parameters and indirect field declarations).
127 IDNS_Tag = 0x0002,
128
129 /// Types, declared with 'struct foo', typedefs, etc.
130 /// This is what elaborated-type-specifiers look for in C++,
131 /// but note that it's ill-formed to find a non-tag.
132 IDNS_Type = 0x0004,
133
134 /// Members, declared with object declarations within tag
135 /// definitions. In C, these can only be found by "qualified"
136 /// lookup in member expressions. In C++, they're found by
137 /// normal lookup.
138 IDNS_Member = 0x0008,
139
140 /// Namespaces, declared with 'namespace foo {}'.
141 /// Lookup for nested-name-specifiers find these.
142 IDNS_Namespace = 0x0010,
143
144 /// Ordinary names. In C, everything that's not a label, tag,
145 /// member, or function-local extern ends up here.
146 IDNS_Ordinary = 0x0020,
147
148 /// Objective C \@protocol.
149 IDNS_ObjCProtocol = 0x0040,
150
151 /// This declaration is a friend function. A friend function
152 /// declaration is always in this namespace but may also be in
153 /// IDNS_Ordinary if it was previously declared.
154 IDNS_OrdinaryFriend = 0x0080,
155
156 /// This declaration is a friend class. A friend class
157 /// declaration is always in this namespace but may also be in
158 /// IDNS_Tag|IDNS_Type if it was previously declared.
159 IDNS_TagFriend = 0x0100,
160
161 /// This declaration is a using declaration. A using declaration
162 /// *introduces* a number of other declarations into the current
163 /// scope, and those declarations use the IDNS of their targets,
164 /// but the actual using declarations go in this namespace.
165 IDNS_Using = 0x0200,
166
167 /// This declaration is a C++ operator declared in a non-class
168 /// context. All such operators are also in IDNS_Ordinary.
169 /// C++ lexical operator lookup looks for these.
170 IDNS_NonMemberOperator = 0x0400,
171
172 /// This declaration is a function-local extern declaration of a
173 /// variable or function. This may also be IDNS_Ordinary if it
174 /// has been declared outside any function. These act mostly like
175 /// invisible friend declarations, but are also visible to unqualified
176 /// lookup within the scope of the declaring function.
177 IDNS_LocalExtern = 0x0800,
178
179 /// This declaration is an OpenMP user defined reduction construction.
180 IDNS_OMPReduction = 0x1000,
181
182 /// This declaration is an OpenMP user defined mapper.
183 IDNS_OMPMapper = 0x2000,
184 };
185
186 /// ObjCDeclQualifier - 'Qualifiers' written next to the return and
187 /// parameter types in method declarations. Other than remembering
188 /// them and mangling them into the method's signature string, these
189 /// are ignored by the compiler; they are consumed by certain
190 /// remote-messaging frameworks.
191 ///
192 /// in, inout, and out are mutually exclusive and apply only to
193 /// method parameters. bycopy and byref are mutually exclusive and
194 /// apply only to method parameters (?). oneway applies only to
195 /// results. All of these expect their corresponding parameter to
196 /// have a particular type. None of this is currently enforced by
197 /// clang.
198 ///
199 /// This should be kept in sync with ObjCDeclSpec::ObjCDeclQualifier.
200 enum ObjCDeclQualifier {
201 OBJC_TQ_None = 0x0,
202 OBJC_TQ_In = 0x1,
203 OBJC_TQ_Inout = 0x2,
204 OBJC_TQ_Out = 0x4,
205 OBJC_TQ_Bycopy = 0x8,
206 OBJC_TQ_Byref = 0x10,
207 OBJC_TQ_Oneway = 0x20,
208
209 /// The nullability qualifier is set when the nullability of the
210 /// result or parameter was expressed via a context-sensitive
211 /// keyword.
212 OBJC_TQ_CSNullability = 0x40
213 };
214
215 /// The kind of ownership a declaration has, for visibility purposes.
216 /// This enumeration is designed such that higher values represent higher
217 /// levels of name hiding.
218 enum class ModuleOwnershipKind : unsigned {
219 /// This declaration is not owned by a module.
220 Unowned,
221
222 /// This declaration has an owning module, but is globally visible
223 /// (typically because its owning module is visible and we know that
224 /// modules cannot later become hidden in this compilation).
225 /// After serialization and deserialization, this will be converted
226 /// to VisibleWhenImported.
227 Visible,
228
229 /// This declaration has an owning module, and is visible when that
230 /// module is imported.
231 VisibleWhenImported,
232
233 /// This declaration has an owning module, but is only visible to
234 /// lookups that occur within that module.
235 ModulePrivate
236 };
237
238 protected:
239 /// The next declaration within the same lexical
240 /// DeclContext. These pointers form the linked list that is
241 /// traversed via DeclContext's decls_begin()/decls_end().
242 ///
243 /// The extra two bits are used for the ModuleOwnershipKind.
244 llvm::PointerIntPair<Decl *, 2, ModuleOwnershipKind> NextInContextAndBits;
245
246 private:
247 friend class DeclContext;
248
249 struct MultipleDC {
250 DeclContext *SemanticDC;
251 DeclContext *LexicalDC;
252 };
253
254 /// DeclCtx - Holds either a DeclContext* or a MultipleDC*.
255 /// For declarations that don't contain C++ scope specifiers, it contains
256 /// the DeclContext where the Decl was declared.
257 /// For declarations with C++ scope specifiers, it contains a MultipleDC*
258 /// with the context where it semantically belongs (SemanticDC) and the
259 /// context where it was lexically declared (LexicalDC).
260 /// e.g.:
261 ///
262 /// namespace A {
263 /// void f(); // SemanticDC == LexicalDC == 'namespace A'
264 /// }
265 /// void A::f(); // SemanticDC == namespace 'A'
266 /// // LexicalDC == global namespace
267 llvm::PointerUnion<DeclContext*, MultipleDC*> DeclCtx;
268
269 bool isInSemaDC() const { return DeclCtx.is<DeclContext*>(); }
270 bool isOutOfSemaDC() const { return DeclCtx.is<MultipleDC*>(); }
271
272 MultipleDC *getMultipleDC() const {
273 return DeclCtx.get<MultipleDC*>();
274 }
275
276 DeclContext *getSemanticDC() const {
277 return DeclCtx.get<DeclContext*>();
278 }
279
280 /// Loc - The location of this decl.
281 SourceLocation Loc;
282
283 /// DeclKind - This indicates which class this is.
284 unsigned DeclKind : 7;
285
286 /// InvalidDecl - This indicates a semantic error occurred.
287 unsigned InvalidDecl : 1;
288
289 /// HasAttrs - This indicates whether the decl has attributes or not.
290 unsigned HasAttrs : 1;
291
292 /// Implicit - Whether this declaration was implicitly generated by
293 /// the implementation rather than explicitly written by the user.
294 unsigned Implicit : 1;
295
296 /// Whether this declaration was "used", meaning that a definition is
297 /// required.
298 unsigned Used : 1;
299
300 /// Whether this declaration was "referenced".
301 /// The difference with 'Used' is whether the reference appears in a
302 /// evaluated context or not, e.g. functions used in uninstantiated templates
303 /// are regarded as "referenced" but not "used".
304 unsigned Referenced : 1;
305
306 /// Whether this declaration is a top-level declaration (function,
307 /// global variable, etc.) that is lexically inside an objc container
308 /// definition.
309 unsigned TopLevelDeclInObjCContainer : 1;
310
311 /// Whether statistic collection is enabled.
312 static bool StatisticsEnabled;
313
314 protected:
315 friend class ASTDeclReader;
316 friend class ASTDeclWriter;
317 friend class ASTNodeImporter;
318 friend class ASTReader;
319 friend class CXXClassMemberWrapper;
320 friend class LinkageComputer;
321 template<typename decl_type> friend class Redeclarable;
322
323 /// Access - Used by C++ decls for the access specifier.
324 // NOTE: VC++ treats enums as signed, avoid using the AccessSpecifier enum
325 unsigned Access : 2;
326
327 /// Whether this declaration was loaded from an AST file.
328 unsigned FromASTFile : 1;
329
330 /// IdentifierNamespace - This specifies what IDNS_* namespace this lives in.
331 unsigned IdentifierNamespace : 14;
332
333 /// If 0, we have not computed the linkage of this declaration.
334 /// Otherwise, it is the linkage + 1.
335 mutable unsigned CacheValidAndLinkage : 3;
336
337 /// Allocate memory for a deserialized declaration.
338 ///
339 /// This routine must be used to allocate memory for any declaration that is
340 /// deserialized from a module file.
341 ///
342 /// \param Size The size of the allocated object.
343 /// \param Ctx The context in which we will allocate memory.
344 /// \param ID The global ID of the deserialized declaration.
345 /// \param Extra The amount of extra space to allocate after the object.
346 void *operator new(std::size_t Size, const ASTContext &Ctx, unsigned ID,
347 std::size_t Extra = 0);
348
349 /// Allocate memory for a non-deserialized declaration.
350 void *operator new(std::size_t Size, const ASTContext &Ctx,
351 DeclContext *Parent, std::size_t Extra = 0);
352
353 private:
354 bool AccessDeclContextSanity() const;
355
356 /// Get the module ownership kind to use for a local lexical child of \p DC,
357 /// which may be either a local or (rarely) an imported declaration.
358 static ModuleOwnershipKind getModuleOwnershipKindForChildOf(DeclContext *DC) {
359 if (DC) {
360 auto *D = cast<Decl>(DC);
361 auto MOK = D->getModuleOwnershipKind();
362 if (MOK != ModuleOwnershipKind::Unowned &&
363 (!D->isFromASTFile() || D->hasLocalOwningModuleStorage()))
364 return MOK;
365 // If D is not local and we have no local module storage, then we don't
366 // need to track module ownership at all.
367 }
368 return ModuleOwnershipKind::Unowned;
369 }
370
371 public:
372 Decl() = delete;
373 Decl(const Decl&) = delete;
374 Decl(Decl &&) = delete;
375 Decl &operator=(const Decl&) = delete;
376 Decl &operator=(Decl&&) = delete;
377
378 protected:
379 Decl(Kind DK, DeclContext *DC, SourceLocation L)
380 : NextInContextAndBits(nullptr, getModuleOwnershipKindForChildOf(DC)),
381 DeclCtx(DC), Loc(L), DeclKind(DK), InvalidDecl(false), HasAttrs(false),
382 Implicit(false), Used(false), Referenced(false),
383 TopLevelDeclInObjCContainer(false), Access(AS_none), FromASTFile(0),
384 IdentifierNamespace(getIdentifierNamespaceForKind(DK)),
385 CacheValidAndLinkage(0) {
386 if (StatisticsEnabled) add(DK);
387 }
388
389 Decl(Kind DK, EmptyShell Empty)
390 : DeclKind(DK), InvalidDecl(false), HasAttrs(false), Implicit(false),
391 Used(false), Referenced(false), TopLevelDeclInObjCContainer(false),
392 Access(AS_none), FromASTFile(0),
393 IdentifierNamespace(getIdentifierNamespaceForKind(DK)),
394 CacheValidAndLinkage(0) {
395 if (StatisticsEnabled) add(DK);
396 }
397
398 virtual ~Decl();
399
400 /// Update a potentially out-of-date declaration.
401 void updateOutOfDate(IdentifierInfo &II) const;
402
403 Linkage getCachedLinkage() const {
404 return Linkage(CacheValidAndLinkage - 1);
405 }
406
407 void setCachedLinkage(Linkage L) const {
408 CacheValidAndLinkage = L + 1;
409 }
410
411 bool hasCachedLinkage() const {
412 return CacheValidAndLinkage;
413 }
414
415 public:
416 /// Source range that this declaration covers.
417 virtual SourceRange getSourceRange() const LLVM_READONLY {
418 return SourceRange(getLocation(), getLocation());
419 }
420
421 SourceLocation getBeginLoc() const LLVM_READONLY {
422 return getSourceRange().getBegin();
423 }
424
425 SourceLocation getEndLoc() const LLVM_READONLY {
426 return getSourceRange().getEnd();
427 }
428
429 SourceLocation getLocation() const { return Loc; }
430 void setLocation(SourceLocation L) { Loc = L; }
431
432 Kind getKind() const { return static_cast<Kind>(DeclKind); }
433 const char *getDeclKindName() const;
434
435 Decl *getNextDeclInContext() { return NextInContextAndBits.getPointer(); }
436 const Decl *getNextDeclInContext() const {return NextInContextAndBits.getPointer();}
437
438 DeclContext *getDeclContext() {
439 if (isInSemaDC())
440 return getSemanticDC();
441 return getMultipleDC()->SemanticDC;
442 }
443 const DeclContext *getDeclContext() const {
444 return const_cast<Decl*>(this)->getDeclContext();
445 }
446
447 /// Find the innermost non-closure ancestor of this declaration,
448 /// walking up through blocks, lambdas, etc. If that ancestor is
449 /// not a code context (!isFunctionOrMethod()), returns null.
450 ///
451 /// A declaration may be its own non-closure context.
452 Decl *getNonClosureContext();
453 const Decl *getNonClosureContext() const {
454 return const_cast<Decl*>(this)->getNonClosureContext();
455 }
456
457 TranslationUnitDecl *getTranslationUnitDecl();
458 const TranslationUnitDecl *getTranslationUnitDecl() const {
459 return const_cast<Decl*>(this)->getTranslationUnitDecl();
460 }
461
462 bool isInAnonymousNamespace() const;
463
464 bool isInStdNamespace() const;
465
466 ASTContext &getASTContext() const LLVM_READONLY;
467
468 void setAccess(AccessSpecifier AS) {
469 Access = AS;
470 assert(AccessDeclContextSanity());
471 }
472
473 AccessSpecifier getAccess() const {
474 assert(AccessDeclContextSanity());
475 return AccessSpecifier(Access);
476 }
477
478 /// Retrieve the access specifier for this declaration, even though
479 /// it may not yet have been properly set.
480 AccessSpecifier getAccessUnsafe() const {
481 return AccessSpecifier(Access);
482 }
483
484 bool hasAttrs() const { return HasAttrs; }
485
486 void setAttrs(const AttrVec& Attrs) {
487 return setAttrsImpl(Attrs, getASTContext());
488 }
489
490 AttrVec &getAttrs() {
491 return const_cast<AttrVec&>(const_cast<const Decl*>(this)->getAttrs());
492 }
493
494 const AttrVec &getAttrs() const;
495 void dropAttrs();
496 void addAttr(Attr *A);
497
498 using attr_iterator = AttrVec::const_iterator;
499 using attr_range = llvm::iterator_range<attr_iterator>;
500
501 attr_range attrs() const {
502 return attr_range(attr_begin(), attr_end());
503 }
504
505 attr_iterator attr_begin() const {
506 return hasAttrs() ? getAttrs().begin() : nullptr;
507 }
508 attr_iterator attr_end() const {
509 return hasAttrs() ? getAttrs().end() : nullptr;
510 }
511
512 template <typename T>
513 void dropAttr() {
514 if (!HasAttrs) return;
515
516 AttrVec &Vec = getAttrs();
517 Vec.erase(std::remove_if(Vec.begin(), Vec.end(), isa<T, Attr*>), Vec.end());
518
519 if (Vec.empty())
520 HasAttrs = false;
521 }
522
523 template <typename T>
524 llvm::iterator_range<specific_attr_iterator<T>> specific_attrs() const {
525 return llvm::make_range(specific_attr_begin<T>(), specific_attr_end<T>());
526 }
527
528 template <typename T>
529 specific_attr_iterator<T> specific_attr_begin() const {
530 return specific_attr_iterator<T>(attr_begin());
531 }
532
533 template <typename T>
534 specific_attr_iterator<T> specific_attr_end() const {
535 return specific_attr_iterator<T>(attr_end());
536 }
537
538 template<typename T> T *getAttr() const {
539 return hasAttrs() ? getSpecificAttr<T>(getAttrs()) : nullptr;
540 }
541
542 template<typename T> bool hasAttr() const {
543 return hasAttrs() && hasSpecificAttr<T>(getAttrs());
544 }
545
546 /// getMaxAlignment - return the maximum alignment specified by attributes
547 /// on this decl, 0 if there are none.
548 unsigned getMaxAlignment() const;
549
550 /// setInvalidDecl - Indicates the Decl had a semantic error. This
551 /// allows for graceful error recovery.
552 void setInvalidDecl(bool Invalid = true);
553 bool isInvalidDecl() const { return (bool) InvalidDecl; }
554
555 /// isImplicit - Indicates whether the declaration was implicitly
556 /// generated by the implementation. If false, this declaration
557 /// was written explicitly in the source code.
558 bool isImplicit() const { return Implicit; }
559 void setImplicit(bool I = true) { Implicit = I; }
560
561 /// Whether *any* (re-)declaration of the entity was used, meaning that
562 /// a definition is required.
563 ///
564 /// \param CheckUsedAttr When true, also consider the "used" attribute
565 /// (in addition to the "used" bit set by \c setUsed()) when determining
566 /// whether the function is used.
567 bool isUsed(bool CheckUsedAttr = true) const;
568
569 /// Set whether the declaration is used, in the sense of odr-use.
570 ///
571 /// This should only be used immediately after creating a declaration.
572 /// It intentionally doesn't notify any listeners.
573 void setIsUsed() { getCanonicalDecl()->Used = true; }
574
575 /// Mark the declaration used, in the sense of odr-use.
576 ///
577 /// This notifies any mutation listeners in addition to setting a bit
578 /// indicating the declaration is used.
579 void markUsed(ASTContext &C);
580
581 /// Whether any declaration of this entity was referenced.
582 bool isReferenced() const;
583
584 /// Whether this declaration was referenced. This should not be relied
585 /// upon for anything other than debugging.
586 bool isThisDeclarationReferenced() const { return Referenced; }
587
588 void setReferenced(bool R = true) { Referenced = R; }
589
590 /// Whether this declaration is a top-level declaration (function,
591 /// global variable, etc.) that is lexically inside an objc container
592 /// definition.
593 bool isTopLevelDeclInObjCContainer() const {
594 return TopLevelDeclInObjCContainer;
595 }
596
597 void setTopLevelDeclInObjCContainer(bool V = true) {
598 TopLevelDeclInObjCContainer = V;
599 }
600
601 /// Looks on this and related declarations for an applicable
602 /// external source symbol attribute.
603 ExternalSourceSymbolAttr *getExternalSourceSymbolAttr() const;
604
605 /// Whether this declaration was marked as being private to the
606 /// module in which it was defined.
607 bool isModulePrivate() const {
608 return getModuleOwnershipKind() == ModuleOwnershipKind::ModulePrivate;
609 }
610
611 /// Return true if this declaration has an attribute which acts as
612 /// definition of the entity, such as 'alias' or 'ifunc'.
613 bool hasDefiningAttr() const;
614
615 /// Return this declaration's defining attribute if it has one.
616 const Attr *getDefiningAttr() const;
617
618 protected:
619 /// Specify that this declaration was marked as being private
620 /// to the module in which it was defined.
621 void setModulePrivate() {
622 // The module-private specifier has no effect on unowned declarations.
623 // FIXME: We should track this in some way for source fidelity.
624 if (getModuleOwnershipKind() == ModuleOwnershipKind::Unowned)
625 return;
626 setModuleOwnershipKind(ModuleOwnershipKind::ModulePrivate);
627 }
628
629 /// Set the owning module ID.
630 void setOwningModuleID(unsigned ID) {
631 assert(isFromASTFile() && "Only works on a deserialized declaration");
632 *((unsigned*)this - 2) = ID;
633 }
634
635 public:
636 /// Determine the availability of the given declaration.
637 ///
638 /// This routine will determine the most restrictive availability of
639 /// the given declaration (e.g., preferring 'unavailable' to
640 /// 'deprecated').
641 ///
642 /// \param Message If non-NULL and the result is not \c
643 /// AR_Available, will be set to a (possibly empty) message
644 /// describing why the declaration has not been introduced, is
645 /// deprecated, or is unavailable.
646 ///
647 /// \param EnclosingVersion The version to compare with. If empty, assume the
648 /// deployment target version.
649 ///
650 /// \param RealizedPlatform If non-NULL and the availability result is found
651 /// in an available attribute it will set to the platform which is written in
652 /// the available attribute.
653 AvailabilityResult
654 getAvailability(std::string *Message = nullptr,
655 VersionTuple EnclosingVersion = VersionTuple(),
656 StringRef *RealizedPlatform = nullptr) const;
657
658 /// Retrieve the version of the target platform in which this
659 /// declaration was introduced.
660 ///
661 /// \returns An empty version tuple if this declaration has no 'introduced'
662 /// availability attributes, or the version tuple that's specified in the
663 /// attribute otherwise.
664 VersionTuple getVersionIntroduced() const;
665
666 /// Determine whether this declaration is marked 'deprecated'.
667 ///
668 /// \param Message If non-NULL and the declaration is deprecated,
669 /// this will be set to the message describing why the declaration
670 /// was deprecated (which may be empty).
671 bool isDeprecated(std::string *Message = nullptr) const {
672 return getAvailability(Message) == AR_Deprecated;
673 }
674
675 /// Determine whether this declaration is marked 'unavailable'.
676 ///
677 /// \param Message If non-NULL and the declaration is unavailable,
678 /// this will be set to the message describing why the declaration
679 /// was made unavailable (which may be empty).
680 bool isUnavailable(std::string *Message = nullptr) const {
681 return getAvailability(Message) == AR_Unavailable;
682 }
683
684 /// Determine whether this is a weak-imported symbol.
685 ///
686 /// Weak-imported symbols are typically marked with the
687 /// 'weak_import' attribute, but may also be marked with an
688 /// 'availability' attribute where we're targing a platform prior to
689 /// the introduction of this feature.
690 bool isWeakImported() const;
691
692 /// Determines whether this symbol can be weak-imported,
693 /// e.g., whether it would be well-formed to add the weak_import
694 /// attribute.
695 ///
696 /// \param IsDefinition Set to \c true to indicate that this
697 /// declaration cannot be weak-imported because it has a definition.
698 bool canBeWeakImported(bool &IsDefinition) const;
699
700 /// Determine whether this declaration came from an AST file (such as
701 /// a precompiled header or module) rather than having been parsed.
702 bool isFromASTFile() const { return FromASTFile; }
703
704 /// Retrieve the global declaration ID associated with this
705 /// declaration, which specifies where this Decl was loaded from.
706 unsigned getGlobalID() const {
707 if (isFromASTFile())
708 return *((const unsigned*)this - 1);
709 return 0;
710 }
711
712 /// Retrieve the global ID of the module that owns this particular
713 /// declaration.
714 unsigned getOwningModuleID() const {
715 if (isFromASTFile())
716 return *((const unsigned*)this - 2);
717 return 0;
718 }
719
720 private:
721 Module *getOwningModuleSlow() const;
722
723 protected:
724 bool hasLocalOwningModuleStorage() const;
725
726 public:
727 /// Get the imported owning module, if this decl is from an imported
728 /// (non-local) module.
729 Module *getImportedOwningModule() const {
730 if (!isFromASTFile() || !hasOwningModule())
731 return nullptr;
732
733 return getOwningModuleSlow();
734 }
735
736 /// Get the local owning module, if known. Returns nullptr if owner is
737 /// not yet known or declaration is not from a module.
738 Module *getLocalOwningModule() const {
739 if (isFromASTFile() || !hasOwningModule())
740 return nullptr;
741
742 assert(hasLocalOwningModuleStorage() &&
743 "owned local decl but no local module storage");
744 return reinterpret_cast<Module *const *>(this)[-1];
745 }
746 void setLocalOwningModule(Module *M) {
747 assert(!isFromASTFile() && hasOwningModule() &&
748 hasLocalOwningModuleStorage() &&
749 "should not have a cached owning module");
750 reinterpret_cast<Module **>(this)[-1] = M;
751 }
752
753 /// Is this declaration owned by some module?
754 bool hasOwningModule() const {
755 return getModuleOwnershipKind() != ModuleOwnershipKind::Unowned;
756 }
757
758 /// Get the module that owns this declaration (for visibility purposes).
759 Module *getOwningModule() const {
760 return isFromASTFile() ? getImportedOwningModule() : getLocalOwningModule();
761 }
762
763 /// Get the module that owns this declaration for linkage purposes.
764 /// There only ever is such a module under the C++ Modules TS.
765 ///
766 /// \param IgnoreLinkage Ignore the linkage of the entity; assume that
767 /// all declarations in a global module fragment are unowned.
768 Module *getOwningModuleForLinkage(bool IgnoreLinkage = false) const;
769
770 /// Determine whether this declaration might be hidden from name
771 /// lookup. Note that the declaration might be visible even if this returns
772 /// \c false, if the owning module is visible within the query context.
773 // FIXME: Rename this to make it clearer what it does.
774 bool isHidden() const {
775 return (int)getModuleOwnershipKind() > (int)ModuleOwnershipKind::Visible;
776 }
777
778 /// Set that this declaration is globally visible, even if it came from a
779 /// module that is not visible.
780 void setVisibleDespiteOwningModule() {
781 if (isHidden())
782 setModuleOwnershipKind(ModuleOwnershipKind::Visible);
783 }
784
785 /// Get the kind of module ownership for this declaration.
786 ModuleOwnershipKind getModuleOwnershipKind() const {
787 return NextInContextAndBits.getInt();
788 }
789
790 /// Set whether this declaration is hidden from name lookup.
791 void setModuleOwnershipKind(ModuleOwnershipKind MOK) {
792 assert(!(getModuleOwnershipKind() == ModuleOwnershipKind::Unowned &&
793 MOK != ModuleOwnershipKind::Unowned && !isFromASTFile() &&
794 !hasLocalOwningModuleStorage()) &&
795 "no storage available for owning module for this declaration");
796 NextInContextAndBits.setInt(MOK);
797 }
798
799 unsigned getIdentifierNamespace() const {
800 return IdentifierNamespace;
801 }
802
803 bool isInIdentifierNamespace(unsigned NS) const {
804 return getIdentifierNamespace() & NS;
805 }
806
807 static unsigned getIdentifierNamespaceForKind(Kind DK);
808
809 bool hasTagIdentifierNamespace() const {
810 return isTagIdentifierNamespace(getIdentifierNamespace());
811 }
812
813 static bool isTagIdentifierNamespace(unsigned NS) {
814 // TagDecls have Tag and Type set and may also have TagFriend.
815 return (NS & ~IDNS_TagFriend) == (IDNS_Tag | IDNS_Type);
816 }
817
818 /// getLexicalDeclContext - The declaration context where this Decl was
819 /// lexically declared (LexicalDC). May be different from
820 /// getDeclContext() (SemanticDC).
821 /// e.g.:
822 ///
823 /// namespace A {
824 /// void f(); // SemanticDC == LexicalDC == 'namespace A'
825 /// }
826 /// void A::f(); // SemanticDC == namespace 'A'
827 /// // LexicalDC == global namespace
828 DeclContext *getLexicalDeclContext() {
829 if (isInSemaDC())
830 return getSemanticDC();
831 return getMultipleDC()->LexicalDC;
832 }
833 const DeclContext *getLexicalDeclContext() const {
834 return const_cast<Decl*>(this)->getLexicalDeclContext();
835 }
836
837 /// Determine whether this declaration is declared out of line (outside its
838 /// semantic context).
839 virtual bool isOutOfLine() const;
840
841 /// setDeclContext - Set both the semantic and lexical DeclContext
842 /// to DC.
843 void setDeclContext(DeclContext *DC);
844
845 void setLexicalDeclContext(DeclContext *DC);
846
847 /// Determine whether this declaration is a templated entity (whether it is
848 // within the scope of a template parameter).
849 bool isTemplated() const;
850
851 /// isDefinedOutsideFunctionOrMethod - This predicate returns true if this
852 /// scoped decl is defined outside the current function or method. This is
853 /// roughly global variables and functions, but also handles enums (which
854 /// could be defined inside or outside a function etc).
855 bool isDefinedOutsideFunctionOrMethod() const {
856 return getParentFunctionOrMethod() == nullptr;
857 }
858
859 /// Returns true if this declaration lexically is inside a function.
860 /// It recognizes non-defining declarations as well as members of local
861 /// classes:
862 /// \code
863 /// void foo() { void bar(); }
864 /// void foo2() { class ABC { void bar(); }; }
865 /// \endcode
866 bool isLexicallyWithinFunctionOrMethod() const;
867
868 /// If this decl is defined inside a function/method/block it returns
869 /// the corresponding DeclContext, otherwise it returns null.
870 const DeclContext *getParentFunctionOrMethod() const;
871 DeclContext *getParentFunctionOrMethod() {
872 return const_cast<DeclContext*>(
873 const_cast<const Decl*>(this)->getParentFunctionOrMethod());
874 }
875
876 /// Retrieves the "canonical" declaration of the given declaration.
877 virtual Decl *getCanonicalDecl() { return this; }
878 const Decl *getCanonicalDecl() const {
879 return const_cast<Decl*>(this)->getCanonicalDecl();
880 }
881
882 /// Whether this particular Decl is a canonical one.
883 bool isCanonicalDecl() const { return getCanonicalDecl() == this; }
884
885 protected:
886 /// Returns the next redeclaration or itself if this is the only decl.
887 ///
888 /// Decl subclasses that can be redeclared should override this method so that
889 /// Decl::redecl_iterator can iterate over them.
890 virtual Decl *getNextRedeclarationImpl() { return this; }
891
892 /// Implementation of getPreviousDecl(), to be overridden by any
893 /// subclass that has a redeclaration chain.
894 virtual Decl *getPreviousDeclImpl() { return nullptr; }
895
896 /// Implementation of getMostRecentDecl(), to be overridden by any
897 /// subclass that has a redeclaration chain.
898 virtual Decl *getMostRecentDeclImpl() { return this; }
899
900 public:
901 /// Iterates through all the redeclarations of the same decl.
902 class redecl_iterator {
903 /// Current - The current declaration.
904 Decl *Current = nullptr;
905 Decl *Starter;
906
907 public:
908 using value_type = Decl *;
909 using reference = const value_type &;
910 using pointer = const value_type *;
911 using iterator_category = std::forward_iterator_tag;
912 using difference_type = std::ptrdiff_t;
913
914 redecl_iterator() = default;
915 explicit redecl_iterator(Decl *C) : Current(C), Starter(C) {}
916
917 reference operator*() const { return Current; }
918 value_type operator->() const { return Current; }
919
920 redecl_iterator& operator++() {
921 assert(Current && "Advancing while iterator has reached end");
922 // Get either previous decl or latest decl.
923 Decl *Next = Current->getNextRedeclarationImpl();
924 assert(Next && "Should return next redeclaration or itself, never null!");
925 Current = (Next != Starter) ? Next : nullptr;
926 return *this;
927 }
928
929 redecl_iterator operator++(int) {
930 redecl_iterator tmp(*this);
931 ++(*this);
932 return tmp;
933 }
934
935 friend bool operator==(redecl_iterator x, redecl_iterator y) {
936 return x.Current == y.Current;
937 }
938
939 friend bool operator!=(redecl_iterator x, redecl_iterator y) {
940 return x.Current != y.Current;
941 }
942 };
943
944 using redecl_range = llvm::iterator_range<redecl_iterator>;
945
946 /// Returns an iterator range for all the redeclarations of the same
947 /// decl. It will iterate at least once (when this decl is the only one).
948 redecl_range redecls() const {
949 return redecl_range(redecls_begin(), redecls_end());
950 }
951
952 redecl_iterator redecls_begin() const {
953 return redecl_iterator(const_cast<Decl *>(this));
954 }
955
956 redecl_iterator redecls_end() const { return redecl_iterator(); }
957
958 /// Retrieve the previous declaration that declares the same entity
959 /// as this declaration, or NULL if there is no previous declaration.
960 Decl *getPreviousDecl() { return getPreviousDeclImpl(); }
961
962 /// Retrieve the previous declaration that declares the same entity
963 /// as this declaration, or NULL if there is no previous declaration.
964 const Decl *getPreviousDecl() const {
965 return const_cast<Decl *>(this)->getPreviousDeclImpl();
966 }
967
968 /// True if this is the first declaration in its redeclaration chain.
969 bool isFirstDecl() const {
970 return getPreviousDecl() == nullptr;
971 }
972
973 /// Retrieve the most recent declaration that declares the same entity
974 /// as this declaration (which may be this declaration).
975 Decl *getMostRecentDecl() { return getMostRecentDeclImpl(); }
976
977 /// Retrieve the most recent declaration that declares the same entity
978 /// as this declaration (which may be this declaration).
979 const Decl *getMostRecentDecl() const {
980 return const_cast<Decl *>(this)->getMostRecentDeclImpl();
981 }
982
983 /// getBody - If this Decl represents a declaration for a body of code,
984 /// such as a function or method definition, this method returns the
985 /// top-level Stmt* of that body. Otherwise this method returns null.
986 virtual Stmt* getBody() const { return nullptr; }
987
988 /// Returns true if this \c Decl represents a declaration for a body of
989 /// code, such as a function or method definition.
990 /// Note that \c hasBody can also return true if any redeclaration of this
991 /// \c Decl represents a declaration for a body of code.
992 virtual bool hasBody() const { return getBody() != nullptr; }
993
994 /// getBodyRBrace - Gets the right brace of the body, if a body exists.
995 /// This works whether the body is a CompoundStmt or a CXXTryStmt.
996 SourceLocation getBodyRBrace() const;
997
998 // global temp stats (until we have a per-module visitor)
999 static void add(Kind k);
1000 static void EnableStatistics();
1001 static void PrintStats();
1002
1003 /// isTemplateParameter - Determines whether this declaration is a
1004 /// template parameter.
1005 bool isTemplateParameter() const;
1006
1007 /// isTemplateParameter - Determines whether this declaration is a
1008 /// template parameter pack.
1009 bool isTemplateParameterPack() const;
1010
1011 /// Whether this declaration is a parameter pack.
1012 bool isParameterPack() const;
1013
1014 /// returns true if this declaration is a template
1015 bool isTemplateDecl() const;
1016
1017 /// Whether this declaration is a function or function template.
1018 bool isFunctionOrFunctionTemplate() const {
1019 return (DeclKind >= Decl::firstFunction &&
1020 DeclKind <= Decl::lastFunction) ||
1021 DeclKind == FunctionTemplate;
1022 }
1023
1024 /// If this is a declaration that describes some template, this
1025 /// method returns that template declaration.
1026 TemplateDecl *getDescribedTemplate() const;
1027
1028 /// Returns the function itself, or the templated function if this is a
1029 /// function template.
1030 FunctionDecl *getAsFunction() LLVM_READONLY;
1031
1032 const FunctionDecl *getAsFunction() const {
1033 return const_cast<Decl *>(this)->getAsFunction();
1034 }
1035
1036 /// Changes the namespace of this declaration to reflect that it's
1037 /// a function-local extern declaration.
1038 ///
1039 /// These declarations appear in the lexical context of the extern
1040 /// declaration, but in the semantic context of the enclosing namespace
1041 /// scope.
1042 void setLocalExternDecl() {
1043 Decl *Prev = getPreviousDecl();
1044 IdentifierNamespace &= ~IDNS_Ordinary;
1045
1046 // It's OK for the declaration to still have the "invisible friend" flag or
1047 // the "conflicts with tag declarations in this scope" flag for the outer
1048 // scope.
1049 assert((IdentifierNamespace & ~(IDNS_OrdinaryFriend | IDNS_Tag)) == 0 &&
1050 "namespace is not ordinary");
1051
1052 IdentifierNamespace |= IDNS_LocalExtern;
1053 if (Prev && Prev->getIdentifierNamespace() & IDNS_Ordinary)
1054 IdentifierNamespace |= IDNS_Ordinary;
1055 }
1056
1057 /// Determine whether this is a block-scope declaration with linkage.
1058 /// This will either be a local variable declaration declared 'extern', or a
1059 /// local function declaration.
1060 bool isLocalExternDecl() {
1061 return IdentifierNamespace & IDNS_LocalExtern;
1062 }
1063
1064 /// Changes the namespace of this declaration to reflect that it's
1065 /// the object of a friend declaration.
1066 ///
1067 /// These declarations appear in the lexical context of the friending
1068 /// class, but in the semantic context of the actual entity. This property
1069 /// applies only to a specific decl object; other redeclarations of the
1070 /// same entity may not (and probably don't) share this property.
1071 void setObjectOfFriendDecl(bool PerformFriendInjection = false) {
1072 unsigned OldNS = IdentifierNamespace;
1073 assert((OldNS & (IDNS_Tag | IDNS_Ordinary |
1074 IDNS_TagFriend | IDNS_OrdinaryFriend |
1075 IDNS_LocalExtern | IDNS_NonMemberOperator)) &&
1076 "namespace includes neither ordinary nor tag");
1077 assert(!(OldNS & ~(IDNS_Tag | IDNS_Ordinary | IDNS_Type |
1078 IDNS_TagFriend | IDNS_OrdinaryFriend |
1079 IDNS_LocalExtern | IDNS_NonMemberOperator)) &&
1080 "namespace includes other than ordinary or tag");
1081
1082 Decl *Prev = getPreviousDecl();
1083 IdentifierNamespace &= ~(IDNS_Ordinary | IDNS_Tag | IDNS_Type);
1084
1085 if (OldNS & (IDNS_Tag | IDNS_TagFriend)) {
1086 IdentifierNamespace |= IDNS_TagFriend;
1087 if (PerformFriendInjection ||
1088 (Prev && Prev->getIdentifierNamespace() & IDNS_Tag))
1089 IdentifierNamespace |= IDNS_Tag | IDNS_Type;
1090 }
1091
1092 if (OldNS & (IDNS_Ordinary | IDNS_OrdinaryFriend |
1093 IDNS_LocalExtern | IDNS_NonMemberOperator)) {
1094 IdentifierNamespace |= IDNS_OrdinaryFriend;
1095 if (PerformFriendInjection ||
1096 (Prev && Prev->getIdentifierNamespace() & IDNS_Ordinary))
1097 IdentifierNamespace |= IDNS_Ordinary;
1098 }
1099 }
1100
1101 enum FriendObjectKind {
1102 FOK_None, ///< Not a friend object.
1103 FOK_Declared, ///< A friend of a previously-declared entity.
1104 FOK_Undeclared ///< A friend of a previously-undeclared entity.
1105 };
1106
1107 /// Determines whether this declaration is the object of a
1108 /// friend declaration and, if so, what kind.
1109 ///
1110 /// There is currently no direct way to find the associated FriendDecl.
1111 FriendObjectKind getFriendObjectKind() const {
1112 unsigned mask =
1113 (IdentifierNamespace & (IDNS_TagFriend | IDNS_OrdinaryFriend));
1114 if (!mask) return FOK_None;
1115 return (IdentifierNamespace & (IDNS_Tag | IDNS_Ordinary) ? FOK_Declared
1116 : FOK_Undeclared);
1117 }
1118
1119 /// Specifies that this declaration is a C++ overloaded non-member.
1120 void setNonMemberOperator() {
1121 assert(getKind() == Function || getKind() == FunctionTemplate);
1122 assert((IdentifierNamespace & IDNS_Ordinary) &&
1123 "visible non-member operators should be in ordinary namespace");
1124 IdentifierNamespace |= IDNS_NonMemberOperator;
1125 }
1126
1127 static bool classofKind(Kind K) { return true; }
1128 static DeclContext *castToDeclContext(const Decl *);
1129 static Decl *castFromDeclContext(const DeclContext *);
1130
1131 void print(raw_ostream &Out, unsigned Indentation = 0,
1132 bool PrintInstantiation = false) const;
1133 void print(raw_ostream &Out, const PrintingPolicy &Policy,
1134 unsigned Indentation = 0, bool PrintInstantiation = false) const;
1135 static void printGroup(Decl** Begin, unsigned NumDecls,
1136 raw_ostream &Out, const PrintingPolicy &Policy,
1137 unsigned Indentation = 0);
1138
1139 // Debuggers don't usually respect default arguments.
1140 void dump() const;
1141
1142 // Same as dump(), but forces color printing.
1143 void dumpColor() const;
1144
1145 void dump(raw_ostream &Out, bool Deserialize = false,
1146 ASTDumpOutputFormat OutputFormat = ADOF_Default) const;
1147
1148 /// \return Unique reproducible object identifier
1149 int64_t getID() const;
1150
1151 /// Looks through the Decl's underlying type to extract a FunctionType
1152 /// when possible. Will return null if the type underlying the Decl does not
1153 /// have a FunctionType.
1154 const FunctionType *getFunctionType(bool BlocksToo = true) const;
1155
1156 private:
1157 void setAttrsImpl(const AttrVec& Attrs, ASTContext &Ctx);
1158 void setDeclContextsImpl(DeclContext *SemaDC, DeclContext *LexicalDC,
1159 ASTContext &Ctx);
1160
1161 protected:
1162 ASTMutationListener *getASTMutationListener() const;
1163 };
1164
1165 /// Determine whether two declarations declare the same entity.
1166 inline bool declaresSameEntity(const Decl *D1, const Decl *D2) {
1167 if (!D1 || !D2)
1168 return false;
1169
1170 if (D1 == D2)
1171 return true;
1172
1173 return D1->getCanonicalDecl() == D2->getCanonicalDecl();
1174 }
1175
1176 /// PrettyStackTraceDecl - If a crash occurs, indicate that it happened when
1177 /// doing something to a specific decl.
1178 class PrettyStackTraceDecl : public llvm::PrettyStackTraceEntry {
1179 const Decl *TheDecl;
1180 SourceLocation Loc;
1181 SourceManager &SM;
1182 const char *Message;
1183
1184 public:
1185 PrettyStackTraceDecl(const Decl *theDecl, SourceLocation L,
1186 SourceManager &sm, const char *Msg)
1187 : TheDecl(theDecl), Loc(L), SM(sm), Message(Msg) {}
1188
1189 void print(raw_ostream &OS) const override;
1190 };
1191
1192 /// The results of name lookup within a DeclContext. This is either a
1193 /// single result (with no stable storage) or a collection of results (with
1194 /// stable storage provided by the lookup table).
1195 class DeclContextLookupResult {
1196 using ResultTy = ArrayRef<NamedDecl *>;
1197
1198 ResultTy Result;
1199
1200 // If there is only one lookup result, it would be invalidated by
1201 // reallocations of the name table, so store it separately.
1202 NamedDecl *Single = nullptr;
1203
1204 static NamedDecl *const SingleElementDummyList;
1205
1206 public:
1207 DeclContextLookupResult() = default;
1208 DeclContextLookupResult(ArrayRef<NamedDecl *> Result)
1209 : Result(Result) {}
1210 DeclContextLookupResult(NamedDecl *Single)
1211 : Result(SingleElementDummyList), Single(Single) {}
1212
1213 class iterator;
1214
1215 using IteratorBase =
1216 llvm::iterator_adaptor_base<iterator, ResultTy::iterator,
1217 std::random_access_iterator_tag,
1218 NamedDecl *const>;
1219
1220 class iterator : public IteratorBase {
1221 value_type SingleElement;
1222
1223 public:
1224 explicit iterator(pointer Pos, value_type Single = nullptr)
1225 : IteratorBase(Pos), SingleElement(Single) {}
1226
1227 reference operator*() const {
1228 return SingleElement ? SingleElement : IteratorBase::operator*();
1229 }
1230 };
1231
1232 using const_iterator = iterator;
1233 using pointer = iterator::pointer;
1234 using reference = iterator::reference;
1235
1236 iterator begin() const { return iterator(Result.begin(), Single); }
1237 iterator end() const { return iterator(Result.end(), Single); }
1238
1239 bool empty() const { return Result.empty(); }
1240 pointer data() const { return Single ? &Single : Result.data(); }
1241 size_t size() const { return Single ? 1 : Result.size(); }
1242 reference front() const { return Single ? Single : Result.front(); }
1243 reference back() const { return Single ? Single : Result.back(); }
1244 reference operator[](size_t N) const { return Single ? Single : Result[N]; }
1245
1246 // FIXME: Remove this from the interface
1247 DeclContextLookupResult slice(size_t N) const {
1248 DeclContextLookupResult Sliced = Result.slice(N);
1249 Sliced.Single = Single;
1250 return Sliced;
1251 }
1252 };
1253
1254 /// DeclContext - This is used only as base class of specific decl types that
1255 /// can act as declaration contexts. These decls are (only the top classes
1256 /// that directly derive from DeclContext are mentioned, not their subclasses):
1257 ///
1258 /// TranslationUnitDecl
1259 /// ExternCContext
1260 /// NamespaceDecl
1261 /// TagDecl
1262 /// OMPDeclareReductionDecl
1263 /// OMPDeclareMapperDecl
1264 /// FunctionDecl
1265 /// ObjCMethodDecl
1266 /// ObjCContainerDecl
1267 /// LinkageSpecDecl
1268 /// ExportDecl
1269 /// BlockDecl
1270 /// CapturedDecl
1271 class DeclContext {
1272 /// For makeDeclVisibleInContextImpl
1273 friend class ASTDeclReader;
1274 /// For reconcileExternalVisibleStorage, CreateStoredDeclsMap,
1275 /// hasNeedToReconcileExternalVisibleStorage
1276 friend class ExternalASTSource;
1277 /// For CreateStoredDeclsMap
1278 friend class DependentDiagnostic;
1279 /// For hasNeedToReconcileExternalVisibleStorage,
1280 /// hasLazyLocalLexicalLookups, hasLazyExternalLexicalLookups
1281 friend class ASTWriter;
1282
1283 // We use uint64_t in the bit-fields below since some bit-fields
1284 // cross the unsigned boundary and this breaks the packing.
1285
1286 /// Stores the bits used by DeclContext.
1287 /// If modified NumDeclContextBit, the ctor of DeclContext and the accessor
1288 /// methods in DeclContext should be updated appropriately.
1289 class DeclContextBitfields {
1290 friend class DeclContext;
1291 /// DeclKind - This indicates which class this is.
1292 uint64_t DeclKind : 7;
1293
1294 /// Whether this declaration context also has some external
1295 /// storage that contains additional declarations that are lexically
1296 /// part of this context.
1297 mutable uint64_t ExternalLexicalStorage : 1;
1298
1299 /// Whether this declaration context also has some external
1300 /// storage that contains additional declarations that are visible
1301 /// in this context.
1302 mutable uint64_t ExternalVisibleStorage : 1;
1303
1304 /// Whether this declaration context has had externally visible
1305 /// storage added since the last lookup. In this case, \c LookupPtr's
1306 /// invariant may not hold and needs to be fixed before we perform
1307 /// another lookup.
1308 mutable uint64_t NeedToReconcileExternalVisibleStorage : 1;
1309
1310 /// If \c true, this context may have local lexical declarations
1311 /// that are missing from the lookup table.
1312 mutable uint64_t HasLazyLocalLexicalLookups : 1;
1313
1314 /// If \c true, the external source may have lexical declarations
1315 /// that are missing from the lookup table.
1316 mutable uint64_t HasLazyExternalLexicalLookups : 1;
1317
1318 /// If \c true, lookups should only return identifier from
1319 /// DeclContext scope (for example TranslationUnit). Used in
1320 /// LookupQualifiedName()
1321 mutable uint64_t UseQualifiedLookup : 1;
1322 };
1323
1324 /// Number of bits in DeclContextBitfields.
1325 enum { NumDeclContextBits = 13 };
1326
1327 /// Stores the bits used by TagDecl.
1328 /// If modified NumTagDeclBits and the accessor
1329 /// methods in TagDecl should be updated appropriately.
1330 class TagDeclBitfields {
1331 friend class TagDecl;
1332 /// For the bits in DeclContextBitfields
1333 uint64_t : NumDeclContextBits;
1334
1335 /// The TagKind enum.
1336 uint64_t TagDeclKind : 3;
1337
1338 /// True if this is a definition ("struct foo {};"), false if it is a
1339 /// declaration ("struct foo;"). It is not considered a definition
1340 /// until the definition has been fully processed.
1341 uint64_t IsCompleteDefinition : 1;
1342
1343 /// True if this is currently being defined.
1344 uint64_t IsBeingDefined : 1;
1345
1346 /// True if this tag declaration is "embedded" (i.e., defined or declared
1347 /// for the very first time) in the syntax of a declarator.
1348 uint64_t IsEmbeddedInDeclarator : 1;
1349
1350 /// True if this tag is free standing, e.g. "struct foo;".
1351 uint64_t IsFreeStanding : 1;
1352
1353 /// Indicates whether it is possible for declarations of this kind
1354 /// to have an out-of-date definition.
1355 ///
1356 /// This option is only enabled when modules are enabled.
1357 uint64_t MayHaveOutOfDateDef : 1;
1358
1359 /// Has the full definition of this type been required by a use somewhere in
1360 /// the TU.
1361 uint64_t IsCompleteDefinitionRequired : 1;
1362 };
1363
1364 /// Number of non-inherited bits in TagDeclBitfields.
1365 enum { NumTagDeclBits = 9 };
1366
1367 /// Stores the bits used by EnumDecl.
1368 /// If modified NumEnumDeclBit and the accessor
1369 /// methods in EnumDecl should be updated appropriately.
1370 class EnumDeclBitfields {
1371 friend class EnumDecl;
1372 /// For the bits in DeclContextBitfields.
1373 uint64_t : NumDeclContextBits;
1374 /// For the bits in TagDeclBitfields.
1375 uint64_t : NumTagDeclBits;
1376
1377 /// Width in bits required to store all the non-negative
1378 /// enumerators of this enum.
1379 uint64_t NumPositiveBits : 8;
1380
1381 /// Width in bits required to store all the negative
1382 /// enumerators of this enum.
1383 uint64_t NumNegativeBits : 8;
1384
1385 /// True if this tag declaration is a scoped enumeration. Only
1386 /// possible in C++11 mode.
1387 uint64_t IsScoped : 1;
1388
1389 /// If this tag declaration is a scoped enum,
1390 /// then this is true if the scoped enum was declared using the class
1391 /// tag, false if it was declared with the struct tag. No meaning is
1392 /// associated if this tag declaration is not a scoped enum.
1393 uint64_t IsScopedUsingClassTag : 1;
1394
1395 /// True if this is an enumeration with fixed underlying type. Only
1396 /// possible in C++11, Microsoft extensions, or Objective C mode.
1397 uint64_t IsFixed : 1;
1398
1399 /// True if a valid hash is stored in ODRHash.
1400 uint64_t HasODRHash : 1;
1401 };
1402
1403 /// Number of non-inherited bits in EnumDeclBitfields.
1404 enum { NumEnumDeclBits = 20 };
1405
1406 /// Stores the bits used by RecordDecl.
1407 /// If modified NumRecordDeclBits and the accessor
1408 /// methods in RecordDecl should be updated appropriately.
1409 class RecordDeclBitfields {
1410 friend class RecordDecl;
1411 /// For the bits in DeclContextBitfields.
1412 uint64_t : NumDeclContextBits;
1413 /// For the bits in TagDeclBitfields.
1414 uint64_t : NumTagDeclBits;
1415
1416 /// This is true if this struct ends with a flexible
1417 /// array member (e.g. int X[]) or if this union contains a struct that does.
1418 /// If so, this cannot be contained in arrays or other structs as a member.
1419 uint64_t HasFlexibleArrayMember : 1;
1420
1421 /// Whether this is the type of an anonymous struct or union.
1422 uint64_t AnonymousStructOrUnion : 1;
1423
1424 /// This is true if this struct has at least one member
1425 /// containing an Objective-C object pointer type.
1426 uint64_t HasObjectMember : 1;
1427
1428 /// This is true if struct has at least one member of
1429 /// 'volatile' type.
1430 uint64_t HasVolatileMember : 1;
1431
1432 /// Whether the field declarations of this record have been loaded
1433 /// from external storage. To avoid unnecessary deserialization of
1434 /// methods/nested types we allow deserialization of just the fields
1435 /// when needed.
1436 mutable uint64_t LoadedFieldsFromExternalStorage : 1;
1437
1438 /// Basic properties of non-trivial C structs.
1439 uint64_t NonTrivialToPrimitiveDefaultInitialize : 1;
1440 uint64_t NonTrivialToPrimitiveCopy : 1;
1441 uint64_t NonTrivialToPrimitiveDestroy : 1;
1442
1443 /// The following bits indicate whether this is or contains a C union that
1444 /// is non-trivial to default-initialize, destruct, or copy. These bits
1445 /// imply the associated basic non-triviality predicates declared above.
1446 uint64_t HasNonTrivialToPrimitiveDefaultInitializeCUnion : 1;
1447 uint64_t HasNonTrivialToPrimitiveDestructCUnion : 1;
1448 uint64_t HasNonTrivialToPrimitiveCopyCUnion : 1;
1449
1450 /// Indicates whether this struct is destroyed in the callee.
1451 uint64_t ParamDestroyedInCallee : 1;
1452
1453 /// Represents the way this type is passed to a function.
1454 uint64_t ArgPassingRestrictions : 2;
1455 };
1456
1457 /// Number of non-inherited bits in RecordDeclBitfields.
1458 enum { NumRecordDeclBits = 14 };
1459
1460 /// Stores the bits used by OMPDeclareReductionDecl.
1461 /// If modified NumOMPDeclareReductionDeclBits and the accessor
1462 /// methods in OMPDeclareReductionDecl should be updated appropriately.
1463 class OMPDeclareReductionDeclBitfields {
1464 friend class OMPDeclareReductionDecl;
1465 /// For the bits in DeclContextBitfields
1466 uint64_t : NumDeclContextBits;
1467
1468 /// Kind of initializer,
1469 /// function call or omp_priv<init_expr> initializtion.
1470 uint64_t InitializerKind : 2;
1471 };
1472
1473 /// Number of non-inherited bits in OMPDeclareReductionDeclBitfields.
1474 enum { NumOMPDeclareReductionDeclBits = 2 };
1475
1476 /// Stores the bits used by FunctionDecl.
1477 /// If modified NumFunctionDeclBits and the accessor
1478 /// methods in FunctionDecl and CXXDeductionGuideDecl
1479 /// (for IsCopyDeductionCandidate) should be updated appropriately.
1480 class FunctionDeclBitfields {
1481 friend class FunctionDecl;
1482 /// For IsCopyDeductionCandidate
1483 friend class CXXDeductionGuideDecl;
1484 /// For the bits in DeclContextBitfields.
1485 uint64_t : NumDeclContextBits;
1486
1487 uint64_t SClass : 3;
1488 uint64_t IsInline : 1;
1489 uint64_t IsInlineSpecified : 1;
1490
1491 uint64_t IsVirtualAsWritten : 1;
1492 uint64_t IsPure : 1;
1493 uint64_t HasInheritedPrototype : 1;
1494 uint64_t HasWrittenPrototype : 1;
1495 uint64_t IsDeleted : 1;
1496 /// Used by CXXMethodDecl
1497 uint64_t IsTrivial : 1;
1498
1499 /// This flag indicates whether this function is trivial for the purpose of
1500 /// calls. This is meaningful only when this function is a copy/move
1501 /// constructor or a destructor.
1502 uint64_t IsTrivialForCall : 1;
1503
1504 uint64_t IsDefaulted : 1;
1505 uint64_t IsExplicitlyDefaulted : 1;
1506 uint64_t HasDefaultedFunctionInfo : 1;
1507 uint64_t HasImplicitReturnZero : 1;
1508 uint64_t IsLateTemplateParsed : 1;
1509
1510 /// Kind of contexpr specifier as defined by ConstexprSpecKind.
1511 uint64_t ConstexprKind : 2;
1512 uint64_t InstantiationIsPending : 1;
1513
1514 /// Indicates if the function uses __try.
1515 uint64_t UsesSEHTry : 1;
1516
1517 /// Indicates if the function was a definition
1518 /// but its body was skipped.
1519 uint64_t HasSkippedBody : 1;
1520
1521 /// Indicates if the function declaration will
1522 /// have a body, once we're done parsing it.
1523 uint64_t WillHaveBody : 1;
1524
1525 /// Indicates that this function is a multiversioned
1526 /// function using attribute 'target'.
1527 uint64_t IsMultiVersion : 1;
1528
1529 /// [C++17] Only used by CXXDeductionGuideDecl. Indicates that
1530 /// the Deduction Guide is the implicitly generated 'copy
1531 /// deduction candidate' (is used during overload resolution).
1532 uint64_t IsCopyDeductionCandidate : 1;
1533
1534 /// Store the ODRHash after first calculation.
1535 uint64_t HasODRHash : 1;
1536
1537 /// Indicates if the function uses Floating Point Constrained Intrinsics
1538 uint64_t UsesFPIntrin : 1;
1539 };
1540
1541 /// Number of non-inherited bits in FunctionDeclBitfields.
1542 enum { NumFunctionDeclBits = 27 };
1543
1544 /// Stores the bits used by CXXConstructorDecl. If modified
1545 /// NumCXXConstructorDeclBits and the accessor
1546 /// methods in CXXConstructorDecl should be updated appropriately.
1547 class CXXConstructorDeclBitfields {
1548 friend class CXXConstructorDecl;
1549 /// For the bits in DeclContextBitfields.
1550 uint64_t : NumDeclContextBits;
1551 /// For the bits in FunctionDeclBitfields.
1552 uint64_t : NumFunctionDeclBits;
1553
1554 /// 24 bits to fit in the remaining available space.
1555 /// Note that this makes CXXConstructorDeclBitfields take
1556 /// exactly 64 bits and thus the width of NumCtorInitializers
1557 /// will need to be shrunk if some bit is added to NumDeclContextBitfields,
1558 /// NumFunctionDeclBitfields or CXXConstructorDeclBitfields.
1559 uint64_t NumCtorInitializers : 21;
1560 uint64_t IsInheritingConstructor : 1;
1561
1562 /// Whether this constructor has a trail-allocated explicit specifier.
1563 uint64_t HasTrailingExplicitSpecifier : 1;
1564 /// If this constructor does't have a trail-allocated explicit specifier.
1565 /// Whether this constructor is explicit specified.
1566 uint64_t IsSimpleExplicit : 1;
1567 };
1568
1569 /// Number of non-inherited bits in CXXConstructorDeclBitfields.
1570 enum {
1571 NumCXXConstructorDeclBits = 64 - NumDeclContextBits - NumFunctionDeclBits
1572 };
1573
1574 /// Stores the bits used by ObjCMethodDecl.
1575 /// If modified NumObjCMethodDeclBits and the accessor
1576 /// methods in ObjCMethodDecl should be updated appropriately.
1577 class ObjCMethodDeclBitfields {
1578 friend class ObjCMethodDecl;
1579
1580 /// For the bits in DeclContextBitfields.
1581 uint64_t : NumDeclContextBits;
1582
1583 /// The conventional meaning of this method; an ObjCMethodFamily.
1584 /// This is not serialized; instead, it is computed on demand and
1585 /// cached.
1586 mutable uint64_t Family : ObjCMethodFamilyBitWidth;
1587
1588 /// instance (true) or class (false) method.
1589 uint64_t IsInstance : 1;
1590 uint64_t IsVariadic : 1;
1591
1592 /// True if this method is the getter or setter for an explicit property.
1593 uint64_t IsPropertyAccessor : 1;
1594
1595 /// True if this method is a synthesized property accessor stub.
1596 uint64_t IsSynthesizedAccessorStub : 1;
1597
1598 /// Method has a definition.
1599 uint64_t IsDefined : 1;
1600
1601 /// Method redeclaration in the same interface.
1602 uint64_t IsRedeclaration : 1;
1603
1604 /// Is redeclared in the same interface.
1605 mutable uint64_t HasRedeclaration : 1;
1606
1607 /// \@required/\@optional
1608 uint64_t DeclImplementation : 2;
1609
1610 /// in, inout, etc.
1611 uint64_t objcDeclQualifier : 7;
1612
1613 /// Indicates whether this method has a related result type.
1614 uint64_t RelatedResultType : 1;
1615
1616 /// Whether the locations of the selector identifiers are in a
1617 /// "standard" position, a enum SelectorLocationsKind.
1618 uint64_t SelLocsKind : 2;
1619
1620 /// Whether this method overrides any other in the class hierarchy.
1621 ///
1622 /// A method is said to override any method in the class's
1623 /// base classes, its protocols, or its categories' protocols, that has
1624 /// the same selector and is of the same kind (class or instance).
1625 /// A method in an implementation is not considered as overriding the same
1626 /// method in the interface or its categories.
1627 uint64_t IsOverriding : 1;
1628
1629 /// Indicates if the method was a definition but its body was skipped.
1630 uint64_t HasSkippedBody : 1;
1631 };
1632
1633 /// Number of non-inherited bits in ObjCMethodDeclBitfields.
1634 enum { NumObjCMethodDeclBits = 24 };
1635
1636 /// Stores the bits used by ObjCContainerDecl.
1637 /// If modified NumObjCContainerDeclBits and the accessor
1638 /// methods in ObjCContainerDecl should be updated appropriately.
1639 class ObjCContainerDeclBitfields {
1640 friend class ObjCContainerDecl;
1641 /// For the bits in DeclContextBitfields
1642 uint32_t : NumDeclContextBits;
1643
1644 // Not a bitfield but this saves space.
1645 // Note that ObjCContainerDeclBitfields is full.
1646 SourceLocation AtStart;
1647 };
1648
1649 /// Number of non-inherited bits in ObjCContainerDeclBitfields.
1650 /// Note that here we rely on the fact that SourceLocation is 32 bits
1651 /// wide. We check this with the static_assert in the ctor of DeclContext.
1652 enum { NumObjCContainerDeclBits = 64 - NumDeclContextBits };
1653
1654 /// Stores the bits used by LinkageSpecDecl.
1655 /// If modified NumLinkageSpecDeclBits and the accessor
1656 /// methods in LinkageSpecDecl should be updated appropriately.
1657 class LinkageSpecDeclBitfields {
1658 friend class LinkageSpecDecl;
1659 /// For the bits in DeclContextBitfields.
1660 uint64_t : NumDeclContextBits;
1661
1662 /// The language for this linkage specification with values
1663 /// in the enum LinkageSpecDecl::LanguageIDs.
1664 uint64_t Language : 3;
1665
1666 /// True if this linkage spec has braces.
1667 /// This is needed so that hasBraces() returns the correct result while the
1668 /// linkage spec body is being parsed. Once RBraceLoc has been set this is
1669 /// not used, so it doesn't need to be serialized.
1670 uint64_t HasBraces : 1;
1671 };
1672
1673 /// Number of non-inherited bits in LinkageSpecDeclBitfields.
1674 enum { NumLinkageSpecDeclBits = 4 };
1675
1676 /// Stores the bits used by BlockDecl.
1677 /// If modified NumBlockDeclBits and the accessor
1678 /// methods in BlockDecl should be updated appropriately.
1679 class BlockDeclBitfields {
1680 friend class BlockDecl;
1681 /// For the bits in DeclContextBitfields.
1682 uint64_t : NumDeclContextBits;
1683
1684 uint64_t IsVariadic : 1;
1685 uint64_t CapturesCXXThis : 1;
1686 uint64_t BlockMissingReturnType : 1;
1687 uint64_t IsConversionFromLambda : 1;
1688
1689 /// A bit that indicates this block is passed directly to a function as a
1690 /// non-escaping parameter.
1691 uint64_t DoesNotEscape : 1;
1692
1693 /// A bit that indicates whether it's possible to avoid coying this block to
1694 /// the heap when it initializes or is assigned to a local variable with
1695 /// automatic storage.
1696 uint64_t CanAvoidCopyToHeap : 1;
1697 };
1698
1699 /// Number of non-inherited bits in BlockDeclBitfields.
1700 enum { NumBlockDeclBits = 5 };
1701
1702 /// Pointer to the data structure used to lookup declarations
1703 /// within this context (or a DependentStoredDeclsMap if this is a
1704 /// dependent context). We maintain the invariant that, if the map
1705 /// contains an entry for a DeclarationName (and we haven't lazily
1706 /// omitted anything), then it contains all relevant entries for that
1707 /// name (modulo the hasExternalDecls() flag).
1708 mutable StoredDeclsMap *LookupPtr = nullptr;
1709
1710 protected:
1711 /// This anonymous union stores the bits belonging to DeclContext and classes
1712 /// deriving from it. The goal is to use otherwise wasted
1713 /// space in DeclContext to store data belonging to derived classes.
1714 /// The space saved is especially significient when pointers are aligned
1715 /// to 8 bytes. In this case due to alignment requirements we have a
1716 /// little less than 8 bytes free in DeclContext which we can use.
1717 /// We check that none of the classes in this union is larger than
1718 /// 8 bytes with static_asserts in the ctor of DeclContext.
1719 union {
1720 DeclContextBitfields DeclContextBits;
1721 TagDeclBitfields TagDeclBits;
1722 EnumDeclBitfields EnumDeclBits;
1723 RecordDeclBitfields RecordDeclBits;
1724 OMPDeclareReductionDeclBitfields OMPDeclareReductionDeclBits;
1725 FunctionDeclBitfields FunctionDeclBits;
1726 CXXConstructorDeclBitfields CXXConstructorDeclBits;
1727 ObjCMethodDeclBitfields ObjCMethodDeclBits;
1728 ObjCContainerDeclBitfields ObjCContainerDeclBits;
1729 LinkageSpecDeclBitfields LinkageSpecDeclBits;
1730 BlockDeclBitfields BlockDeclBits;
1731
1732 static_assert(sizeof(DeclContextBitfields) <= 8,
1733 "DeclContextBitfields is larger than 8 bytes!");
1734 static_assert(sizeof(TagDeclBitfields) <= 8,
1735 "TagDeclBitfields is larger than 8 bytes!");
1736 static_assert(sizeof(EnumDeclBitfields) <= 8,
1737 "EnumDeclBitfields is larger than 8 bytes!");
1738 static_assert(sizeof(RecordDeclBitfields) <= 8,
1739 "RecordDeclBitfields is larger than 8 bytes!");
1740 static_assert(sizeof(OMPDeclareReductionDeclBitfields) <= 8,
1741 "OMPDeclareReductionDeclBitfields is larger than 8 bytes!");
1742 static_assert(sizeof(FunctionDeclBitfields) <= 8,
1743 "FunctionDeclBitfields is larger than 8 bytes!");
1744 static_assert(sizeof(CXXConstructorDeclBitfields) <= 8,
1745 "CXXConstructorDeclBitfields is larger than 8 bytes!");
1746 static_assert(sizeof(ObjCMethodDeclBitfields) <= 8,
1747 "ObjCMethodDeclBitfields is larger than 8 bytes!");
1748 static_assert(sizeof(ObjCContainerDeclBitfields) <= 8,
1749 "ObjCContainerDeclBitfields is larger than 8 bytes!");
1750 static_assert(sizeof(LinkageSpecDeclBitfields) <= 8,
1751 "LinkageSpecDeclBitfields is larger than 8 bytes!");
1752 static_assert(sizeof(BlockDeclBitfields) <= 8,
1753 "BlockDeclBitfields is larger than 8 bytes!");
1754 };
1755
1756 /// FirstDecl - The first declaration stored within this declaration
1757 /// context.
1758 mutable Decl *FirstDecl = nullptr;
1759
1760 /// LastDecl - The last declaration stored within this declaration
1761 /// context. FIXME: We could probably cache this value somewhere
1762 /// outside of the DeclContext, to reduce the size of DeclContext by
1763 /// another pointer.
1764 mutable Decl *LastDecl = nullptr;
1765
1766 /// Build up a chain of declarations.
1767 ///
1768 /// \returns the first/last pair of declarations.
1769 static std::pair<Decl *, Decl *>
1770 BuildDeclChain(ArrayRef<Decl*> Decls, bool FieldsAlreadyLoaded);
1771
1772 DeclContext(Decl::Kind K);
1773
1774 public:
1775 ~DeclContext();
1776
1777 Decl::Kind getDeclKind() const {
1778 return static_cast<Decl::Kind>(DeclContextBits.DeclKind);
1779 }
1780
1781 const char *getDeclKindName() const;
1782
1783 /// getParent - Returns the containing DeclContext.
1784 DeclContext *getParent() {
1785 return cast<Decl>(this)->getDeclContext();
1786 }
1787 const DeclContext *getParent() const {
1788 return const_cast<DeclContext*>(this)->getParent();
1789 }
1790
1791 /// getLexicalParent - Returns the containing lexical DeclContext. May be
1792 /// different from getParent, e.g.:
1793 ///
1794 /// namespace A {
1795 /// struct S;
1796 /// }
1797 /// struct A::S {}; // getParent() == namespace 'A'
1798 /// // getLexicalParent() == translation unit
1799 ///
1800 DeclContext *getLexicalParent() {
1801 return cast<Decl>(this)->getLexicalDeclContext();
1802 }
1803 const DeclContext *getLexicalParent() const {
1804 return const_cast<DeclContext*>(this)->getLexicalParent();
1805 }
1806
1807 DeclContext *getLookupParent();
1808
1809 const DeclContext *getLookupParent() const {
1810 return const_cast<DeclContext*>(this)->getLookupParent();
1811 }
1812
1813 ASTContext &getParentASTContext() const {
1814 return cast<Decl>(this)->getASTContext();
1815 }
1816
1817 bool isClosure() const { return getDeclKind() == Decl::Block; }
1818
1819 /// Return this DeclContext if it is a BlockDecl. Otherwise, return the
1820 /// innermost enclosing BlockDecl or null if there are no enclosing blocks.
1821 const BlockDecl *getInnermostBlockDecl() const;
1822
1823 bool isObjCContainer() const {
1824 switch (getDeclKind()) {
1825 case Decl::ObjCCategory:
1826 case Decl::ObjCCategoryImpl:
1827 case Decl::ObjCImplementation:
1828 case Decl::ObjCInterface:
1829 case Decl::ObjCProtocol:
1830 return true;
1831 default:
1832 return false;
1833 }
1834 }
1835
1836 bool isFunctionOrMethod() const {
1837 switch (getDeclKind()) {
1838 case Decl::Block:
1839 case Decl::Captured:
1840 case Decl::ObjCMethod:
1841 return true;
1842 default:
1843 return getDeclKind() >= Decl::firstFunction &&
1844 getDeclKind() <= Decl::lastFunction;
1845 }
1846 }
1847
1848 /// Test whether the context supports looking up names.
1849 bool isLookupContext() const {
1850 return !isFunctionOrMethod() && getDeclKind() != Decl::LinkageSpec &&
1851 getDeclKind() != Decl::Export;
1852 }
1853
1854 bool isFileContext() const {
1855 return getDeclKind() == Decl::TranslationUnit ||
1856 getDeclKind() == Decl::Namespace;
1857 }
1858
1859 bool isTranslationUnit() const {
1860 return getDeclKind() == Decl::TranslationUnit;
1861 }
1862
1863 bool isRecord() const {
1864 return getDeclKind() >= Decl::firstRecord &&
1865 getDeclKind() <= Decl::lastRecord;
1866 }
1867
1868 bool isNamespace() const { return getDeclKind() == Decl::Namespace; }
1869
1870 bool isStdNamespace() const;
1871
1872 bool isInlineNamespace() const;
1873
1874 /// Determines whether this context is dependent on a
1875 /// template parameter.
1876 bool isDependentContext() const;
1877
1878 /// isTransparentContext - Determines whether this context is a
1879 /// "transparent" context, meaning that the members declared in this
1880 /// context are semantically declared in the nearest enclosing
1881 /// non-transparent (opaque) context but are lexically declared in
1882 /// this context. For example, consider the enumerators of an
1883 /// enumeration type:
1884 /// @code
1885 /// enum E {
1886 /// Val1
1887 /// };
1888 /// @endcode
1889 /// Here, E is a transparent context, so its enumerator (Val1) will
1890 /// appear (semantically) that it is in the same context of E.
1891 /// Examples of transparent contexts include: enumerations (except for
1892 /// C++0x scoped enums), and C++ linkage specifications.
1893 bool isTransparentContext() const;
1894
1895 /// Determines whether this context or some of its ancestors is a
1896 /// linkage specification context that specifies C linkage.
1897 bool isExternCContext() const;
1898
1899 /// Retrieve the nearest enclosing C linkage specification context.
1900 const LinkageSpecDecl *getExternCContext() const;
1901
1902 /// Determines whether this context or some of its ancestors is a
1903 /// linkage specification context that specifies C++ linkage.
1904 bool isExternCXXContext() const;
1905
1906 /// Determine whether this declaration context is equivalent
1907 /// to the declaration context DC.
1908 bool Equals(const DeclContext *DC) const {
1909 return DC && this->getPrimaryContext() == DC->getPrimaryContext();
1910 }
1911
1912 /// Determine whether this declaration context encloses the
1913 /// declaration context DC.
1914 bool Encloses(const DeclContext *DC) const;
1915
1916 /// Find the nearest non-closure ancestor of this context,
1917 /// i.e. the innermost semantic parent of this context which is not
1918 /// a closure. A context may be its own non-closure ancestor.
1919 Decl *getNonClosureAncestor();
1920 const Decl *getNonClosureAncestor() const {
1921 return const_cast<DeclContext*>(this)->getNonClosureAncestor();
1922 }
1923
1924 /// getPrimaryContext - There may be many different
1925 /// declarations of the same entity (including forward declarations
1926 /// of classes, multiple definitions of namespaces, etc.), each with
1927 /// a different set of declarations. This routine returns the
1928 /// "primary" DeclContext structure, which will contain the
1929 /// information needed to perform name lookup into this context.
1930 DeclContext *getPrimaryContext();
1931 const DeclContext *getPrimaryContext() const {
1932 return const_cast<DeclContext*>(this)->getPrimaryContext();
1933 }
1934
1935 /// getRedeclContext - Retrieve the context in which an entity conflicts with
1936 /// other entities of the same name, or where it is a redeclaration if the
1937 /// two entities are compatible. This skips through transparent contexts.
1938 DeclContext *getRedeclContext();
1939 const DeclContext *getRedeclContext() const {
1940 return const_cast<DeclContext *>(this)->getRedeclContext();
1941 }
1942
1943 /// Retrieve the nearest enclosing namespace context.
1944 DeclContext *getEnclosingNamespaceContext();
1945 const DeclContext *getEnclosingNamespaceContext() const {
1946 return const_cast<DeclContext *>(this)->getEnclosingNamespaceContext();
1947 }
1948
1949 /// Retrieve the outermost lexically enclosing record context.
1950 RecordDecl *getOuterLexicalRecordContext();
1951 const RecordDecl *getOuterLexicalRecordContext() const {
1952 return const_cast<DeclContext *>(this)->getOuterLexicalRecordContext();
1953 }
1954
1955 /// Test if this context is part of the enclosing namespace set of
1956 /// the context NS, as defined in C++0x [namespace.def]p9. If either context
1957 /// isn't a namespace, this is equivalent to Equals().
1958 ///
1959 /// The enclosing namespace set of a namespace is the namespace and, if it is
1960 /// inline, its enclosing namespace, recursively.
1961 bool InEnclosingNamespaceSetOf(const DeclContext *NS) const;
1962
1963 /// Collects all of the declaration contexts that are semantically
1964 /// connected to this declaration context.
1965 ///
1966 /// For declaration contexts that have multiple semantically connected but
1967 /// syntactically distinct contexts, such as C++ namespaces, this routine
1968 /// retrieves the complete set of such declaration contexts in source order.
1969 /// For example, given:
1970 ///
1971 /// \code
1972 /// namespace N {
1973 /// int x;
1974 /// }
1975 /// namespace N {
1976 /// int y;
1977 /// }
1978 /// \endcode
1979 ///
1980 /// The \c Contexts parameter will contain both definitions of N.
1981 ///
1982 /// \param Contexts Will be cleared and set to the set of declaration
1983 /// contexts that are semanticaly connected to this declaration context,
1984 /// in source order, including this context (which may be the only result,
1985 /// for non-namespace contexts).
1986 void collectAllContexts(SmallVectorImpl<DeclContext *> &Contexts);
1987
1988 /// decl_iterator - Iterates through the declarations stored
1989 /// within this context.
1990 class decl_iterator {
1991 /// Current - The current declaration.
1992 Decl *Current = nullptr;
1993
1994 public:
1995 using value_type = Decl *;
1996 using reference = const value_type &;
1997 using pointer = const value_type *;
1998 using iterator_category = std::forward_iterator_tag;
1999 using difference_type = std::ptrdiff_t;
2000
2001 decl_iterator() = default;
2002 explicit decl_iterator(Decl *C) : Current(C) {}
2003
2004 reference operator*() const { return Current; }
2005
2006 // This doesn't meet the iterator requirements, but it's convenient
2007 value_type operator->() const { return Current; }
2008
2009 decl_iterator& operator++() {
2010 Current = Current->getNextDeclInContext();
2011 return *this;
2012 }
2013
2014 decl_iterator operator++(int) {
2015 decl_iterator tmp(*this);
2016 ++(*this);
2017 return tmp;
2018 }
2019
2020 friend bool operator==(decl_iterator x, decl_iterator y) {
2021 return x.Current == y.Current;
2022 }
2023
2024 friend bool operator!=(decl_iterator x, decl_iterator y) {
2025 return x.Current != y.Current;
2026 }
2027 };
2028
2029 using decl_range = llvm::iterator_range<decl_iterator>;
2030
2031 /// decls_begin/decls_end - Iterate over the declarations stored in
2032 /// this context.
2033 decl_range decls() const { return decl_range(decls_begin(), decls_end()); }
2034 decl_iterator decls_begin() const;
2035 decl_iterator decls_end() const { return decl_iterator(); }
2036 bool decls_empty() const;
2037
2038 /// noload_decls_begin/end - Iterate over the declarations stored in this
2039 /// context that are currently loaded; don't attempt to retrieve anything
2040 /// from an external source.
2041 decl_range noload_decls() const {
2042 return decl_range(noload_decls_begin(), noload_decls_end());
2043 }
2044 decl_iterator noload_decls_begin() const { return decl_iterator(FirstDecl); }
2045 decl_iterator noload_decls_end() const { return decl_iterator(); }
2046
2047 /// specific_decl_iterator - Iterates over a subrange of
2048 /// declarations stored in a DeclContext, providing only those that
2049 /// are of type SpecificDecl (or a class derived from it). This
2050 /// iterator is used, for example, to provide iteration over just
2051 /// the fields within a RecordDecl (with SpecificDecl = FieldDecl).
2052 template<typename SpecificDecl>
2053 class specific_decl_iterator {
2054 /// Current - The current, underlying declaration iterator, which
2055 /// will either be NULL or will point to a declaration of
2056 /// type SpecificDecl.
2057 DeclContext::decl_iterator Current;
2058
2059 /// SkipToNextDecl - Advances the current position up to the next
2060 /// declaration of type SpecificDecl that also meets the criteria
2061 /// required by Acceptable.
2062 void SkipToNextDecl() {
2063 while (*Current && !isa<SpecificDecl>(*Current))
2064 ++Current;
2065 }
2066
2067 public:
2068 using value_type = SpecificDecl *;
2069 // TODO: Add reference and pointer types (with some appropriate proxy type)
2070 // if we ever have a need for them.
2071 using reference = void;
2072 using pointer = void;
2073 using difference_type =
2074 std::iterator_traits<DeclContext::decl_iterator>::difference_type;
2075 using iterator_category = std::forward_iterator_tag;
2076
2077 specific_decl_iterator() = default;
2078
2079 /// specific_decl_iterator - Construct a new iterator over a
2080 /// subset of the declarations the range [C,
2081 /// end-of-declarations). If A is non-NULL, it is a pointer to a
2082 /// member function of SpecificDecl that should return true for
2083 /// all of the SpecificDecl instances that will be in the subset
2084 /// of iterators. For example, if you want Objective-C instance
2085 /// methods, SpecificDecl will be ObjCMethodDecl and A will be
2086 /// &ObjCMethodDecl::isInstanceMethod.
2087 explicit specific_decl_iterator(DeclContext::decl_iterator C) : Current(C) {
2088 SkipToNextDecl();
2089 }
2090
2091 value_type operator*() const { return cast<SpecificDecl>(*Current); }
2092
2093 // This doesn't meet the iterator requirements, but it's convenient
2094 value_type operator->() const { return **this; }
2095
2096 specific_decl_iterator& operator++() {
2097 ++Current;
2098 SkipToNextDecl();
2099 return *this;
2100 }
2101
2102 specific_decl_iterator operator++(int) {
2103 specific_decl_iterator tmp(*this);
2104 ++(*this);
2105 return tmp;
2106 }
2107
2108 friend bool operator==(const specific_decl_iterator& x,
2109 const specific_decl_iterator& y) {
2110 return x.Current == y.Current;
2111 }
2112
2113 friend bool operator!=(const specific_decl_iterator& x,
2114 const specific_decl_iterator& y) {
2115 return x.Current != y.Current;
2116 }
2117 };
2118
2119 /// Iterates over a filtered subrange of declarations stored
2120 /// in a DeclContext.
2121 ///
2122 /// This iterator visits only those declarations that are of type
2123 /// SpecificDecl (or a class derived from it) and that meet some
2124 /// additional run-time criteria. This iterator is used, for
2125 /// example, to provide access to the instance methods within an
2126 /// Objective-C interface (with SpecificDecl = ObjCMethodDecl and
2127 /// Acceptable = ObjCMethodDecl::isInstanceMethod).
2128 template<typename SpecificDecl, bool (SpecificDecl::*Acceptable)() const>
2129 class filtered_decl_iterator {
2130 /// Current - The current, underlying declaration iterator, which
2131 /// will either be NULL or will point to a declaration of
2132 /// type SpecificDecl.
2133 DeclContext::decl_iterator Current;
2134
2135 /// SkipToNextDecl - Advances the current position up to the next
2136 /// declaration of type SpecificDecl that also meets the criteria
2137 /// required by Acceptable.
2138 void SkipToNextDecl() {
2139 while (*Current &&
2140 (!isa<SpecificDecl>(*Current) ||
2141 (Acceptable && !(cast<SpecificDecl>(*Current)->*Acceptable)())))
2142 ++Current;
2143 }
2144
2145 public:
2146 using value_type = SpecificDecl *;
2147 // TODO: Add reference and pointer types (with some appropriate proxy type)
2148 // if we ever have a need for them.
2149 using reference = void;
2150 using pointer = void;
2151 using difference_type =
2152 std::iterator_traits<DeclContext::decl_iterator>::difference_type;
2153 using iterator_category = std::forward_iterator_tag;
2154
2155 filtered_decl_iterator() = default;
2156
2157 /// filtered_decl_iterator - Construct a new iterator over a
2158 /// subset of the declarations the range [C,
2159 /// end-of-declarations). If A is non-NULL, it is a pointer to a
2160 /// member function of SpecificDecl that should return true for
2161 /// all of the SpecificDecl instances that will be in the subset
2162 /// of iterators. For example, if you want Objective-C instance
2163 /// methods, SpecificDecl will be ObjCMethodDecl and A will be
2164 /// &ObjCMethodDecl::isInstanceMethod.
2165 explicit filtered_decl_iterator(DeclContext::decl_iterator C) : Current(C) {
2166 SkipToNextDecl();
2167 }
2168
2169 value_type operator*() const { return cast<SpecificDecl>(*Current); }
2170 value_type operator->() const { return cast<SpecificDecl>(*Current); }
2171
2172 filtered_decl_iterator& operator++() {
2173 ++Current;
2174 SkipToNextDecl();
2175 return *this;
2176 }
2177
2178 filtered_decl_iterator operator++(int) {
2179 filtered_decl_iterator tmp(*this);
2180 ++(*this);
2181 return tmp;
2182 }
2183
2184 friend bool operator==(const filtered_decl_iterator& x,
2185 const filtered_decl_iterator& y) {
2186 return x.Current == y.Current;
2187 }
2188
2189 friend bool operator!=(const filtered_decl_iterator& x,
2190 const filtered_decl_iterator& y) {
2191 return x.Current != y.Current;
2192 }
2193 };
2194
2195 /// Add the declaration D into this context.
2196 ///
2197 /// This routine should be invoked when the declaration D has first
2198 /// been declared, to place D into the context where it was
2199 /// (lexically) defined. Every declaration must be added to one
2200 /// (and only one!) context, where it can be visited via
2201 /// [decls_begin(), decls_end()). Once a declaration has been added
2202 /// to its lexical context, the corresponding DeclContext owns the
2203 /// declaration.
2204 ///
2205 /// If D is also a NamedDecl, it will be made visible within its
2206 /// semantic context via makeDeclVisibleInContext.
2207 void addDecl(Decl *D);
2208
2209 /// Add the declaration D into this context, but suppress
2210 /// searches for external declarations with the same name.
2211 ///
2212 /// Although analogous in function to addDecl, this removes an
2213 /// important check. This is only useful if the Decl is being
2214 /// added in response to an external search; in all other cases,
2215 /// addDecl() is the right function to use.
2216 /// See the ASTImporter for use cases.
2217 void addDeclInternal(Decl *D);
2218
2219 /// Add the declaration D to this context without modifying
2220 /// any lookup tables.
2221 ///
2222 /// This is useful for some operations in dependent contexts where
2223 /// the semantic context might not be dependent; this basically
2224 /// only happens with friends.
2225 void addHiddenDecl(Decl *D);
2226
2227 /// Removes a declaration from this context.
2228 void removeDecl(Decl *D);
2229
2230 /// Checks whether a declaration is in this context.
2231 bool containsDecl(Decl *D) const;
2232
2233 /// Checks whether a declaration is in this context.
2234 /// This also loads the Decls from the external source before the check.
2235 bool containsDeclAndLoad(Decl *D) const;
2236
2237 using lookup_result = DeclContextLookupResult;
2238 using lookup_iterator = lookup_result::iterator;
2239
2240 /// lookup - Find the declarations (if any) with the given Name in
2241 /// this context. Returns a range of iterators that contains all of
2242 /// the declarations with this name, with object, function, member,
2243 /// and enumerator names preceding any tag name. Note that this
2244 /// routine will not look into parent contexts.
2245 lookup_result lookup(DeclarationName Name) const;
2246
2247 /// Find the declarations with the given name that are visible
2248 /// within this context; don't attempt to retrieve anything from an
2249 /// external source.
2250 lookup_result noload_lookup(DeclarationName Name);
2251
2252 /// A simplistic name lookup mechanism that performs name lookup
2253 /// into this declaration context without consulting the external source.
2254 ///
2255 /// This function should almost never be used, because it subverts the
2256 /// usual relationship between a DeclContext and the external source.
2257 /// See the ASTImporter for the (few, but important) use cases.
2258 ///
2259 /// FIXME: This is very inefficient; replace uses of it with uses of
2260 /// noload_lookup.
2261 void localUncachedLookup(DeclarationName Name,
2262 SmallVectorImpl<NamedDecl *> &Results);
2263
2264 /// Makes a declaration visible within this context.
2265 ///
2266 /// This routine makes the declaration D visible to name lookup
2267 /// within this context and, if this is a transparent context,
2268 /// within its parent contexts up to the first enclosing
2269 /// non-transparent context. Making a declaration visible within a
2270 /// context does not transfer ownership of a declaration, and a
2271 /// declaration can be visible in many contexts that aren't its
2272 /// lexical context.
2273 ///
2274 /// If D is a redeclaration of an existing declaration that is
2275 /// visible from this context, as determined by
2276 /// NamedDecl::declarationReplaces, the previous declaration will be
2277 /// replaced with D.
2278 void makeDeclVisibleInContext(NamedDecl *D);
2279
2280 /// all_lookups_iterator - An iterator that provides a view over the results
2281 /// of looking up every possible name.
2282 class all_lookups_iterator;
2283
2284 using lookups_range = llvm::iterator_range<all_lookups_iterator>;
2285
2286 lookups_range lookups() const;
2287 // Like lookups(), but avoids loading external declarations.
2288 // If PreserveInternalState, avoids building lookup data structures too.
2289 lookups_range noload_lookups(bool PreserveInternalState) const;
2290
2291 /// Iterators over all possible lookups within this context.
2292 all_lookups_iterator lookups_begin() const;
2293 all_lookups_iterator lookups_end() const;
2294
2295 /// Iterators over all possible lookups within this context that are
2296 /// currently loaded; don't attempt to retrieve anything from an external
2297 /// source.
2298 all_lookups_iterator noload_lookups_begin() const;
2299 all_lookups_iterator noload_lookups_end() const;
2300
2301 struct udir_iterator;
2302
2303 using udir_iterator_base =
2304 llvm::iterator_adaptor_base<udir_iterator, lookup_iterator,
2305 std::random_access_iterator_tag,
2306 UsingDirectiveDecl *>;
2307
2308 struct udir_iterator : udir_iterator_base {
2309 udir_iterator(lookup_iterator I) : udir_iterator_base(I) {}
2310
2311 UsingDirectiveDecl *operator*() const;
2312 };
2313
2314 using udir_range = llvm::iterator_range<udir_iterator>;
2315
2316 udir_range using_directives() const;
2317
2318 // These are all defined in DependentDiagnostic.h.
2319 class ddiag_iterator;
2320
2321 using ddiag_range = llvm::iterator_range<DeclContext::ddiag_iterator>;
2322
2323 inline ddiag_range ddiags() const;
2324
2325 // Low-level accessors
2326
2327 /// Mark that there are external lexical declarations that we need
2328 /// to include in our lookup table (and that are not available as external
2329 /// visible lookups). These extra lookup results will be found by walking
2330 /// the lexical declarations of this context. This should be used only if
2331 /// setHasExternalLexicalStorage() has been called on any decl context for
2332 /// which this is the primary context.
2333 void setMustBuildLookupTable() {
2334 assert(this == getPrimaryContext() &&
2335 "should only be called on primary context");
2336 DeclContextBits.HasLazyExternalLexicalLookups = true;
2337 }
2338
2339 /// Retrieve the internal representation of the lookup structure.
2340 /// This may omit some names if we are lazily building the structure.
2341 StoredDeclsMap *getLookupPtr() const { return LookupPtr; }
2342
2343 /// Ensure the lookup structure is fully-built and return it.
2344 StoredDeclsMap *buildLookup();
2345
2346 /// Whether this DeclContext has external storage containing
2347 /// additional declarations that are lexically in this context.
2348 bool hasExternalLexicalStorage() const {
2349 return DeclContextBits.ExternalLexicalStorage;
2350 }
2351
2352 /// State whether this DeclContext has external storage for
2353 /// declarations lexically in this context.
2354 void setHasExternalLexicalStorage(bool ES = true) const {
2355 DeclContextBits.ExternalLexicalStorage = ES;
2356 }
2357
2358 /// Whether this DeclContext has external storage containing
2359 /// additional declarations that are visible in this context.
2360 bool hasExternalVisibleStorage() const {
2361 return DeclContextBits.ExternalVisibleStorage;
2362 }
2363
2364 /// State whether this DeclContext has external storage for
2365 /// declarations visible in this context.
2366 void setHasExternalVisibleStorage(bool ES = true) const {
2367 DeclContextBits.ExternalVisibleStorage = ES;
2368 if (ES && LookupPtr)
2369 DeclContextBits.NeedToReconcileExternalVisibleStorage = true;
2370 }
2371
2372 /// Determine whether the given declaration is stored in the list of
2373 /// declarations lexically within this context.
2374 bool isDeclInLexicalTraversal(const Decl *D) const {
2375 return D && (D->NextInContextAndBits.getPointer() || D == FirstDecl ||
2376 D == LastDecl);
2377 }
2378
2379 bool setUseQualifiedLookup(bool use = true) const {
2380 bool old_value = DeclContextBits.UseQualifiedLookup;
2381 DeclContextBits.UseQualifiedLookup = use;
2382 return old_value;
2383 }
2384
2385 bool shouldUseQualifiedLookup() const {
2386 return DeclContextBits.UseQualifiedLookup;
2387 }
2388
2389 static bool classof(const Decl *D);
2390 static bool classof(const DeclContext *D) { return true; }
2391
2392 void dumpDeclContext() const;
2393 void dumpLookups() const;
2394 void dumpLookups(llvm::raw_ostream &OS, bool DumpDecls = false,
2395 bool Deserialize = false) const;
2396
2397 private:
2398 /// Whether this declaration context has had externally visible
2399 /// storage added since the last lookup. In this case, \c LookupPtr's
2400 /// invariant may not hold and needs to be fixed before we perform
2401 /// another lookup.
2402 bool hasNeedToReconcileExternalVisibleStorage() const {
2403 return DeclContextBits.NeedToReconcileExternalVisibleStorage;
2404 }
2405
2406 /// State that this declaration context has had externally visible
2407 /// storage added since the last lookup. In this case, \c LookupPtr's
2408 /// invariant may not hold and needs to be fixed before we perform
2409 /// another lookup.
2410 void setNeedToReconcileExternalVisibleStorage(bool Need = true) const {
2411 DeclContextBits.NeedToReconcileExternalVisibleStorage = Need;
2412 }
2413
2414 /// If \c true, this context may have local lexical declarations
2415 /// that are missing from the lookup table.
2416 bool hasLazyLocalLexicalLookups() const {
2417 return DeclContextBits.HasLazyLocalLexicalLookups;
2418 }
2419
2420 /// If \c true, this context may have local lexical declarations
2421 /// that are missing from the lookup table.
2422 void setHasLazyLocalLexicalLookups(bool HasLLLL = true) const {
2423 DeclContextBits.HasLazyLocalLexicalLookups = HasLLLL;
2424 }
2425
2426 /// If \c true, the external source may have lexical declarations
2427 /// that are missing from the lookup table.
2428 bool hasLazyExternalLexicalLookups() const {
2429 return DeclContextBits.HasLazyExternalLexicalLookups;
2430 }
2431
2432 /// If \c true, the external source may have lexical declarations
2433 /// that are missing from the lookup table.
2434 void setHasLazyExternalLexicalLookups(bool HasLELL = true) const {
2435 DeclContextBits.HasLazyExternalLexicalLookups = HasLELL;
2436 }
2437
2438 void reconcileExternalVisibleStorage() const;
2439 bool LoadLexicalDeclsFromExternalStorage() const;
2440
2441 /// Makes a declaration visible within this context, but
2442 /// suppresses searches for external declarations with the same
2443 /// name.
2444 ///
2445 /// Analogous to makeDeclVisibleInContext, but for the exclusive
2446 /// use of addDeclInternal().
2447 void makeDeclVisibleInContextInternal(NamedDecl *D);
2448
2449 StoredDeclsMap *CreateStoredDeclsMap(ASTContext &C) const;
2450
2451 void loadLazyLocalLexicalLookups();
2452 void buildLookupImpl(DeclContext *DCtx, bool Internal);
2453 void makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
2454 bool Rediscoverable);
2455 void makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal);
2456 };
2457
2458 inline bool Decl::isTemplateParameter() const {
2459 return getKind() == TemplateTypeParm || getKind() == NonTypeTemplateParm ||
2460 getKind() == TemplateTemplateParm;
2461 }
2462
2463 // Specialization selected when ToTy is not a known subclass of DeclContext.
2464 template <class ToTy,
2465 bool IsKnownSubtype = ::std::is_base_of<DeclContext, ToTy>::value>
2466 struct cast_convert_decl_context {
2467 static const ToTy *doit(const DeclContext *Val) {
2468 return static_cast<const ToTy*>(Decl::castFromDeclContext(Val));
2469 }
2470
2471 static ToTy *doit(DeclContext *Val) {
2472 return static_cast<ToTy*>(Decl::castFromDeclContext(Val));
2473 }
2474 };
2475
2476 // Specialization selected when ToTy is a known subclass of DeclContext.
2477 template <class ToTy>
2478 struct cast_convert_decl_context<ToTy, true> {
2479 static const ToTy *doit(const DeclContext *Val) {
2480 return static_cast<const ToTy*>(Val);
2481 }
2482
2483 static ToTy *doit(DeclContext *Val) {
2484 return static_cast<ToTy*>(Val);
2485 }
2486 };
2487
2488 } // namespace clang
2489
2490 namespace llvm {
2491
2492 /// isa<T>(DeclContext*)
2493 template <typename To>
2494 struct isa_impl<To, ::clang::DeclContext> {
2495 static bool doit(const ::clang::DeclContext &Val) {
2496 return To::classofKind(Val.getDeclKind());
2497 }
2498 };
2499
2500 /// cast<T>(DeclContext*)
2501 template<class ToTy>
2502 struct cast_convert_val<ToTy,
2503 const ::clang::DeclContext,const ::clang::DeclContext> {
2504 static const ToTy &doit(const ::clang::DeclContext &Val) {
2505 return *::clang::cast_convert_decl_context<ToTy>::doit(&Val);
2506 }
2507 };
2508
2509 template<class ToTy>
2510 struct cast_convert_val<ToTy, ::clang::DeclContext, ::clang::DeclContext> {
2511 static ToTy &doit(::clang::DeclContext &Val) {
2512 return *::clang::cast_convert_decl_context<ToTy>::doit(&Val);
2513 }
2514 };
2515
2516 template<class ToTy>
2517 struct cast_convert_val<ToTy,
2518 const ::clang::DeclContext*, const ::clang::DeclContext*> {
2519 static const ToTy *doit(const ::clang::DeclContext *Val) {
2520 return ::clang::cast_convert_decl_context<ToTy>::doit(Val);
2521 }
2522 };
2523
2524 template<class ToTy>
2525 struct cast_convert_val<ToTy, ::clang::DeclContext*, ::clang::DeclContext*> {
2526 static ToTy *doit(::clang::DeclContext *Val) {
2527 return ::clang::cast_convert_decl_context<ToTy>::doit(Val);
2528 }
2529 };
2530
2531 /// Implement cast_convert_val for Decl -> DeclContext conversions.
2532 template<class FromTy>
2533 struct cast_convert_val< ::clang::DeclContext, FromTy, FromTy> {
2534 static ::clang::DeclContext &doit(const FromTy &Val) {
2535 return *FromTy::castToDeclContext(&Val);
2536 }
2537 };
2538
2539 template<class FromTy>
2540 struct cast_convert_val< ::clang::DeclContext, FromTy*, FromTy*> {
2541 static ::clang::DeclContext *doit(const FromTy *Val) {
2542 return FromTy::castToDeclContext(Val);
2543 }
2544 };
2545
2546 template<class FromTy>
2547 struct cast_convert_val< const ::clang::DeclContext, FromTy, FromTy> {
2548 static const ::clang::DeclContext &doit(const FromTy &Val) {
2549 return *FromTy::castToDeclContext(&Val);
2550 }
2551 };
2552
2553 template<class FromTy>
2554 struct cast_convert_val< const ::clang::DeclContext, FromTy*, FromTy*> {
2555 static const ::clang::DeclContext *doit(const FromTy *Val) {
2556 return FromTy::castToDeclContext(Val);
2557 }
2558 };
2559
2560 } // namespace llvm
2561
2562 #endif // LLVM_CLANG_AST_DECLBASE_H
clang::Decl::OBJC_TQ_None
Definition: DeclBase.h:201
clang::AR_Unavailable
Definition: DeclBase.h:78
clang::Builtin::ID
ID
Definition: Builtins.h:46
clang::Decl::getPreviousDecl
const Decl * getPreviousDecl() const
Retrieve the previous declaration that declares the same entity as this declaration, or NULL if there is no previous declaration.
Definition: DeclBase.h:964
clang::DeclContext::shouldUseQualifiedLookup
bool shouldUseQualifiedLookup() const
Definition: DeclBase.h:2385
clang::DeclContext::filtered_decl_iterator::pointer
void pointer
Definition: DeclBase.h:2150
clang::DeclContext::specific_decl_iterator::operator++
specific_decl_iterator & operator++()
Definition: DeclBase.h:2096
clang::Decl::setImplicit
void setImplicit(bool I=true)
Definition: DeclBase.h:559
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1783
clang::Decl::redecl_iterator::operator++
redecl_iterator operator++(int)
Definition: DeclBase.h:929
clang::Decl::getCanonicalDecl
const Decl * getCanonicalDecl() const
Definition: DeclBase.h:878
clang::DeclContext::noload_decls_begin
decl_iterator noload_decls_begin() const
Definition: DeclBase.h:2044
clang::Decl::redecl_range
llvm::iterator_range< redecl_iterator > redecl_range
Definition: DeclBase.h:944
clang::Decl::castToDeclContext
static DeclContext * castToDeclContext(const Decl *)
Definition: DeclBase.cpp:879
clang::Decl::getOwningModule
Module * getOwningModule() const
Get the module that owns this declaration (for visibility purposes).
Definition: DeclBase.h:759
clang::Decl::getDeclKindName
const char * getDeclKindName() const
Definition: DeclBase.cpp:123
clang::Decl::NextInContextAndBits
llvm::PointerIntPair< Decl *, 2, ModuleOwnershipKind > NextInContextAndBits
The next declaration within the same lexical DeclContext.
Definition: DeclBase.h:244
clang::Decl::castFromDeclContext
static Decl * castFromDeclContext(const DeclContext *)
Definition: DeclBase.cpp:860
clang::DeclContext::filtered_decl_iterator::operator*
value_type operator*() const
Definition: DeclBase.h:2169
clang::DeclContext::isClosure
bool isClosure() const
Definition: DeclBase.h:1817
clang::Decl::ModuleOwnershipKind::ModulePrivate
This declaration has an owning module, but is only visible to lookups that occur within that module...
clang::DeclContext::isLookupContext
bool isLookupContext() const
Test whether the context supports looking up names.
Definition: DeclBase.h:1849
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:986
clang::Decl::setAttrs
void setAttrs(const AttrVec &Attrs)
Definition: DeclBase.h:486
llvm
Specialize PointerLikeTypeTraits to allow LazyGenerationalUpdatePtr to be placed into a PointerUnion...
Definition: Dominators.h:30
clang::Decl::getOwningModuleForLinkage
Module * getOwningModuleForLinkage(bool IgnoreLinkage=false) const
Get the module that owns this declaration for linkage purposes.
Definition: Decl.cpp:1511
clang::Decl::attr_begin
attr_iterator attr_begin() const
Definition: DeclBase.h:505
clang::Decl::specific_attr_begin
specific_attr_iterator< T > specific_attr_begin() const
Definition: DeclBase.h:529
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:66
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3422
clang::AR_NotYetIntroduced
Definition: DeclBase.h:76
clang::Decl::CacheValidAndLinkage
unsigned CacheValidAndLinkage
If 0, we have not computed the linkage of this declaration.
Definition: DeclBase.h:335
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:88
clang::specific_attr_iterator
specific_attr_iterator - Iterates over a subrange of an AttrVec, only providing attributes that are o...
Definition: AttrIterator.h:34
clang::DeclContext::specific_decl_iterator::operator==
friend bool operator==(const specific_decl_iterator &x, const specific_decl_iterator &y)
Definition: DeclBase.h:2108
clang::Decl::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: DeclBase.h:421
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:2087
clang::Decl::add
static void add(Kind k)
Definition: DeclBase.cpp:193
clang::Decl::FOK_None
Not a friend object.
Definition: DeclBase.h:1102
clang::Decl::getPreviousDecl
Decl * getPreviousDecl()
Retrieve the previous declaration that declares the same entity as this declaration, or NULL if there is no previous declaration.
Definition: DeclBase.h:960
llvm::cast_convert_val< ToTy, ::clang::DeclContext, ::clang::DeclContext >::doit
static ToTy & doit(::clang::DeclContext &Val)
Definition: DeclBase.h:2511
llvm::isa_impl< To, ::clang::DeclContext >::doit
static bool doit(const ::clang::DeclContext &Val)
Definition: DeclBase.h:2495
clang::Decl::OBJC_TQ_Bycopy
Definition: DeclBase.h:205
clang::DeclContext::isObjCContainer
bool isObjCContainer() const
Definition: DeclBase.h:1823
clang::Decl::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclBase.h:425
clang::AccessSpecifier
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:113
clang::DeclContext::filtered_decl_iterator::reference
void reference
Definition: DeclBase.h:2149
clang::Decl::printGroup
static void printGroup(Decl **Begin, unsigned NumDecls, raw_ostream &Out, const PrintingPolicy &Policy, unsigned Indentation=0)
Definition: DeclPrinter.cpp:178
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:2374
clang::cast_convert_decl_context::doit
static ToTy * doit(DeclContext *Val)
Definition: DeclBase.h:2471
clang::DeclContext::hasExternalVisibleStorage
bool hasExternalVisibleStorage() const
Whether this DeclContext has external storage containing additional declarations that are visible in ...
Definition: DeclBase.h:2360
clang::DeclContext::filtered_decl_iterator
Iterates over a filtered subrange of declarations stored in a DeclContext.
Definition: DeclBase.h:2129
clang::Decl::getIdentifierNamespace
unsigned getIdentifierNamespace() const
Definition: DeclBase.h:799
clang::CXXConstructorDecl
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2383
clang::DeclContextLookupResult::data
pointer data() const
Definition: DeclBase.h:1240
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:254
clang::Decl::Access
unsigned Access
Access - Used by C++ decls for the access specifier.
Definition: DeclBase.h:325
clang::Decl::redecl_iterator::operator++
redecl_iterator & operator++()
Definition: DeclBase.h:920
clang::DeclContextLookupResult::iterator::operator*
reference operator*() const
Definition: DeclBase.h:1227
clang::DeclContextLookupResult::back
reference back() const
Definition: DeclBase.h:1243
clang::Decl::ModuleOwnershipKind
ModuleOwnershipKind
The kind of ownership a declaration has, for visibility purposes.
Definition: DeclBase.h:218
clang::Decl::hasOwningModule
bool hasOwningModule() const
Is this declaration owned by some module?
Definition: DeclBase.h:754
clang::Decl::getASTMutationListener
ASTMutationListener * getASTMutationListener() const
Definition: DeclBase.cpp:381
clang::DeclContext::decls
decl_range decls() const
decls_begin/decls_end - Iterate over the declarations stored in this context.
Definition: DeclBase.h:2033
clang::Decl::hasLocalOwningModuleStorage
bool hasLocalOwningModuleStorage() const
Definition: DeclBase.cpp:119
clang::ObjCMethodDecl
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:138
clang::DeclContextLookupResult::front
reference front() const
Definition: DeclBase.h:1242
clang::Decl::isInvalidDecl
bool isInvalidDecl() const
Definition: DeclBase.h:553
clang::DeclContext::specific_decl_iterator::operator!=
friend bool operator!=(const specific_decl_iterator &x, const specific_decl_iterator &y)
Definition: DeclBase.h:2113
clang::Decl::getExternalSourceSymbolAttr
ExternalSourceSymbolAttr * getExternalSourceSymbolAttr() const
Looks on this and related declarations for an applicable external source symbol attribute.
Definition: DeclBase.cpp:435
clang::PrintingPolicy
Describes how types, statements, expressions, and declarations should be printed. ...
Definition: PrettyPrinter.h:47
clang::Decl::isParameterPack
bool isParameterPack() const
Whether this declaration is a parameter pack.
Definition: DeclBase.cpp:211
llvm::cast_convert_val< ToTy, const ::clang::DeclContext *, const ::clang::DeclContext * >::doit
static const ToTy * doit(const ::clang::DeclContext *Val)
Definition: DeclBase.h:2519
clang::DeclContext::BlockDeclBits
BlockDeclBitfields BlockDeclBits
Definition: DeclBase.h:1730
clang::Decl::getLocalOwningModule
Module * getLocalOwningModule() const
Get the local owning module, if known.
Definition: DeclBase.h:738
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::Decl
Decl(Kind DK, EmptyShell Empty)
Definition: DeclBase.h:389
clang::DeclContext::decl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:2007
clang::Decl::IDNS_Type
Types, declared with &#39;struct foo&#39;, typedefs, etc.
Definition: DeclBase.h:132
clang::Decl::isLexicallyWithinFunctionOrMethod
bool isLexicallyWithinFunctionOrMethod() const
Returns true if this declaration lexically is inside a function.
Definition: DeclBase.cpp:335
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3748
clang::DeclContext::CXXConstructorDeclBits
CXXConstructorDeclBitfields CXXConstructorDeclBits
Definition: DeclBase.h:1726
clang::Decl::dumpColor
void dumpColor() const
Definition: ASTDumper.cpp:199
clang::Redeclarable
Provides common interface for the Decls that can be redeclared.
Definition: Redeclarable.h:84
clang::LinkageComputer
Definition: Linkage.h:73
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:57
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:2354
clang::Decl::print
void print(raw_ostream &Out, unsigned Indentation=0, bool PrintInstantiation=false) const
Definition: DeclPrinter.cpp:119
clang::Decl::isInAnonymousNamespace
bool isInAnonymousNamespace() const
Definition: DeclBase.cpp:347
clang::DeclContext::LinkageSpecDeclBits
LinkageSpecDeclBitfields LinkageSpecDeclBits
Definition: DeclBase.h:1729
clang::DeclContext::udir_iterator
Definition: DeclBase.h:2308
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:168
clang::DeclContextLookupResult
The results of name lookup within a DeclContext.
Definition: DeclBase.h:1195
clang::Decl::attr_end
attr_iterator attr_end() const
Definition: DeclBase.h:508
clang::DeclContext::specific_decl_iterator::operator++
specific_decl_iterator operator++(int)
Definition: DeclBase.h:2102
clang::Decl::DeclContext
friend class DeclContext
Definition: DeclBase.h:247
clang::DeclContext::decl_range
llvm::iterator_range< decl_iterator > decl_range
Definition: DeclBase.h:2029
clang::Decl::redecl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:911
clang::Decl::IDNS_OrdinaryFriend
This declaration is a friend function.
Definition: DeclBase.h:154
clang::DeclContext::isNamespace
bool isNamespace() const
Definition: DeclBase.h:1868
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:780
clang::DeclContextLookupResult::end
iterator end() const
Definition: DeclBase.h:1237
clang::Decl::getSourceRange
virtual SourceRange getSourceRange() const LLVM_READONLY
Source range that this declaration covers.
Definition: DeclBase.h:417
clang::Decl::setOwningModuleID
void setOwningModuleID(unsigned ID)
Set the owning module ID.
Definition: DeclBase.h:630
size_t
__SIZE_TYPE__ size_t
The unsigned integer type of the result of the sizeof operator.
Definition: opencl-c-base.h:40
clang::Decl::isDefinedOutsideFunctionOrMethod
bool isDefinedOutsideFunctionOrMethod() const
isDefinedOutsideFunctionOrMethod - This predicate returns true if this scoped decl is defined outside...
Definition: DeclBase.h:855
clang::Decl::isInIdentifierNamespace
bool isInIdentifierNamespace(unsigned NS) const
Definition: DeclBase.h:803
clang::DeclContext::Equals
bool Equals(const DeclContext *DC) const
Determine whether this declaration context is equivalent to the declaration context DC...
Definition: DeclBase.h:1908
clang::Decl::FromASTFile
unsigned FromASTFile
Whether this declaration was loaded from an AST file.
Definition: DeclBase.h:328
operator*
clang::CharUnits operator*(clang::CharUnits::QuantityType Scale, const clang::CharUnits &CU)
Definition: CharUnits.h:212
clang::Decl::specific_attr_end
specific_attr_iterator< T > specific_attr_end() const
Definition: DeclBase.h:534
clang::Module
Describes a module or submodule.
Definition: Module.h:64
llvm::SmallVectorImpl
Definition: LLVM.h:36
clang::AR_Available
Definition: DeclBase.h:75
clang::DeclContext::specific_decl_iterator::operator*
value_type operator*() const
Definition: DeclBase.h:2091
clang::MSInheritanceModel::Single
clang::Decl::isDeprecated
bool isDeprecated(std::string *Message=nullptr) const
Determine whether this declaration is marked &#39;deprecated&#39;.
Definition: DeclBase.h:671
clang::Decl::OBJC_TQ_Byref
Definition: DeclBase.h:206
clang::DeclContext::filtered_decl_iterator::operator!=
friend bool operator!=(const filtered_decl_iterator &x, const filtered_decl_iterator &y)
Definition: DeclBase.h:2189
clang::DeclContextLookupResult::iterator::iterator
iterator(pointer Pos, value_type Single=nullptr)
Definition: DeclBase.h:1224
clang::ObjCContainerDecl
ObjCContainerDecl - Represents a container for method declarations.
Definition: DeclObjC.h:983
clang::Decl::isReferenced
bool isReferenced() const
Whether any declaration of this entity was referenced.
Definition: DeclBase.cpp:423
clang::Decl::IDNS_Namespace
Namespaces, declared with &#39;namespace foo {}&#39;.
Definition: DeclBase.h:142
clang::Decl::hasTagIdentifierNamespace
bool hasTagIdentifierNamespace() const
Definition: DeclBase.h:809
LLVM.h
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
clang::Decl::getLexicalDeclContext
const DeclContext * getLexicalDeclContext() const
Definition: DeclBase.h:833
clang::Decl::getModuleOwnershipKind
ModuleOwnershipKind getModuleOwnershipKind() const
Get the kind of module ownership for this declaration.
Definition: DeclBase.h:786
clang::DeclContext::decl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:1998
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:2165
isStdNamespace
static bool isStdNamespace(const DeclContext *DC)
Definition: ItaniumMangle.cpp:783
clang::Decl::FOK_Undeclared
A friend of a previously-undeclared entity.
Definition: DeclBase.h:1104
clang::Decl::OBJC_TQ_Out
Definition: DeclBase.h:204
clang::DeclContext::specific_decl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:2075
clang::DeclContextLookupResult::slice
DeclContextLookupResult slice(size_t N) const
Definition: DeclBase.h:1247
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:2333
clang::declaresSameEntity
bool declaresSameEntity(const Decl *D1, const Decl *D2)
Determine whether two declarations declare the same entity.
Definition: DeclBase.h:1166
clang::Decl::getLexicalDeclContext
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC)...
Definition: DeclBase.h:828
clang::DeclContext::specific_decl_iterator::difference_type
std::iterator_traits< DeclContext::decl_iterator >::difference_type difference_type
Definition: DeclBase.h:2074
clang::DeclContext::decl_iterator::difference_type
std::ptrdiff_t difference_type
Definition: DeclBase.h:1999
clang::Decl::IDNS_Label
Labels, declared with &#39;x:&#39; and referenced with &#39;goto x&#39;.
Definition: DeclBase.h:119
clang::Decl::setLocalOwningModule
void setLocalOwningModule(Module *M)
Definition: DeclBase.h:746
clang::LinkageSpecDecl
Represents a linkage specification.
Definition: DeclCXX.h:2778
llvm::ArrayRef
Definition: LLVM.h:31
llvm::cast_convert_val< ::clang::DeclContext, FromTy *, FromTy * >::doit
::clang::DeclContext * doit(const FromTy *Val)
Definition: DeclBase.h:2541
clang::Decl::getMostRecentDeclImpl
virtual Decl * getMostRecentDeclImpl()
Implementation of getMostRecentDecl(), to be overridden by any subclass that has a redeclaration chai...
Definition: DeclBase.h:898
clang::Decl::IDNS_Ordinary
Ordinary names.
Definition: DeclBase.h:146
clang::Decl::setCachedLinkage
void setCachedLinkage(Linkage L) const
Definition: DeclBase.h:407
clang::Decl::getCanonicalDecl
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:877
clang::Decl::operator=
Decl & operator=(const Decl &)=delete
clang::Language
Language
The language for the input, used to select and validate the language standard and possible actions...
Definition: LangStandard.h:19
clang::AS_none
Definition: Specifiers.h:117
clang::AvailabilityResult
AvailabilityResult
Captures the result of checking the availability of a declaration.
Definition: DeclBase.h:74
Parent
NodeId Parent
Definition: ASTDiff.cpp:191
clang::Decl::getNextDeclInContext
Decl * getNextDeclInContext()
Definition: DeclBase.h:435
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:640
clang::Decl::hasAttr
bool hasAttr() const
Definition: DeclBase.h:542
clang::DeclContext::DeclContextBits
DeclContextBitfields DeclContextBits
Definition: DeclBase.h:1720
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:104
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:574
clang::Decl::IDNS_NonMemberOperator
This declaration is a C++ operator declared in a non-class context.
Definition: DeclBase.h:170
clang::Decl::IDNS_ObjCProtocol
Objective C @protocol.
Definition: DeclBase.h:149
llvm::cast_convert_val< ToTy, ::clang::DeclContext *, ::clang::DeclContext * >::doit
static ToTy * doit(::clang::DeclContext *Val)
Definition: DeclBase.h:2526
clang::DeclContext::udir_range
llvm::iterator_range< udir_iterator > udir_range
Definition: DeclBase.h:2314
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:2041
clang::Decl::redecl_iterator::difference_type
std::ptrdiff_t difference_type
Definition: DeclBase.h:912
Used
Definition: ObjCUnusedIVarsChecker.cpp:29
clang::DeclContext::getLookupParent
const DeclContext * getLookupParent() const
Definition: DeclBase.h:1809
clang::Decl::getFunctionType
const FunctionType * getFunctionType(bool BlocksToo=true) const
Looks through the Decl&#39;s underlying type to extract a FunctionType when possible. ...
Definition: DeclBase.cpp:954
clang::Decl::IDNS_TagFriend
This declaration is a friend class.
Definition: DeclBase.h:159
clang::Decl::getNonClosureContext
const Decl * getNonClosureContext() const
Definition: DeclBase.h:453
clang::Decl::getID
int64_t getID() const
Definition: DeclBase.cpp:950
ASTDumperUtils.h
clang::DeclContext::getLexicalParent
DeclContext * getLexicalParent()
getLexicalParent - Returns the containing lexical DeclContext.
Definition: DeclBase.h:1800
clang::Decl::isCanonicalDecl
bool isCanonicalDecl() const
Whether this particular Decl is a canonical one.
Definition: DeclBase.h:883
clang::BlockDecl
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:4037
clang::Decl::getDefiningAttr
const Attr * getDefiningAttr() const
Return this declaration&#39;s defining attribute if it has one.
Definition: DeclBase.cpp:460
clang::DeclContext::lookups_range
llvm::iterator_range< all_lookups_iterator > lookups_range
Definition: DeclBase.h:2284
clang::Decl::classofKind
static bool classofKind(Kind K)
Definition: DeclBase.h:1127
clang::Decl::getIdentifierNamespaceForKind
static unsigned getIdentifierNamespaceForKind(Kind DK)
Definition: DeclBase.cpp:689
clang::DeclContext::getLookupPtr
StoredDeclsMap * getLookupPtr() const
Retrieve the internal representation of the lookup structure.
Definition: DeclBase.h:2341
clang::ASTDumpOutputFormat
ASTDumpOutputFormat
Used to specify the format for printing AST dump information.
Definition: ASTDumperUtils.h:21
V
#define V(N, I)
Definition: ASTContext.h:2941
clang::Decl::setInvalidDecl
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
clang::Decl::IDNS_OMPReduction
This declaration is an OpenMP user defined reduction construction.
Definition: DeclBase.h:180
clang::Decl::isImplicit
bool isImplicit() const
isImplicit - Indicates whether the declaration was implicitly generated by the implementation.
Definition: DeclBase.h:558
clang::Decl::getImportedOwningModule
Module * getImportedOwningModule() const
Get the imported owning module, if this decl is from an imported (non-local) module.
Definition: DeclBase.h:729
clang::DeclContextLookupResult::size
size_t size() const
Definition: DeclBase.h:1241
clang::Decl::getMostRecentDecl
Decl * getMostRecentDecl()
Retrieve the most recent declaration that declares the same entity as this declaration (which may be ...
Definition: DeclBase.h:975
clang::DeclContextLookupResult::DeclContextLookupResult
DeclContextLookupResult(ArrayRef< NamedDecl *> Result)
Definition: DeclBase.h:1208
clang::Decl::getNextDeclInContext
const Decl * getNextDeclInContext() const
Definition: DeclBase.h:436
clang::Decl::isLocalExternDecl
bool isLocalExternDecl()
Determine whether this is a block-scope declaration with linkage.
Definition: DeclBase.h:1060
clang::DeclContext::isFileContext
bool isFileContext() const
Definition: DeclBase.h:1854
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:438
Begin
SourceLocation Begin
Definition: USRLocFinder.cpp:164
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::Decl::redecls_end
redecl_iterator redecls_end() const
Definition: DeclBase.h:956
clang::Decl::isTemplateParameter
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:2458
clang::Decl::isTemplateParameterPack
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack...
Definition: DeclBase.cpp:201
clang::Decl::IDNS_OMPMapper
This declaration is an OpenMP user defined mapper.
Definition: DeclBase.h:183
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:621
clang::Decl::attr_range
llvm::iterator_range< attr_iterator > attr_range
Definition: DeclBase.h:499
IdentifierTable.h
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
clang::DeclContext::getParent
const DeclContext * getParent() const
Definition: DeclBase.h:1787
clang::DeclContext::isFunctionOrMethod
bool isFunctionOrMethod() const
Definition: DeclBase.h:1836
clang::Decl::redecl_iterator::redecl_iterator
redecl_iterator(Decl *C)
Definition: DeclBase.h:915
clang::DeclContextLookupResult::operator[]
reference operator[](size_t N) const
Definition: DeclBase.h:1244
clang::Decl::getMaxAlignment
unsigned getMaxAlignment() const
getMaxAlignment - return the maximum alignment specified by attributes on this decl, 0 if there are none.
Definition: DeclBase.cpp:385
clang::DeclContext::getParent
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1784
clang::ASTNodeImporter
Definition: ASTImporter.cpp:140
clang::SourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:217
clang::Decl::setLocation
void setLocation(SourceLocation L)
Definition: DeclBase.h:430
clang::Decl::FriendObjectKind
FriendObjectKind
Definition: DeclBase.h:1101
clang::Decl::getAsFunction
const FunctionDecl * getAsFunction() const
Definition: DeclBase.h:1032
clang::CXXDeductionGuideDecl
Represents a C++ deduction guide declaration.
Definition: DeclCXX.h:1842
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
clang::Decl::IdentifierNamespace
unsigned IdentifierNamespace
IdentifierNamespace - This specifies what IDNS_* namespace this lives in.
Definition: DeclBase.h:331
SM
const SourceManager & SM
Definition: Format.cpp:1685
clang::DeclContext::FunctionDeclBits
FunctionDeclBitfields FunctionDeclBits
Definition: DeclBase.h:1725
clang::Decl::getDeclContext
const DeclContext * getDeclContext() const
Definition: DeclBase.h:443
clang::Decl::setDeclContext
void setDeclContext(DeclContext *DC)
setDeclContext - Set both the semantic and lexical DeclContext to DC.
Definition: DeclBase.cpp:295
clang::Decl::OBJC_TQ_In
Definition: DeclBase.h:202
clang::Decl::redecl_iterator::operator*
reference operator*() const
Definition: DeclBase.h:917
clang::DeclContext::specific_decl_iterator::reference
void reference
Definition: DeclBase.h:2071
clang::Decl::getFriendObjectKind
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so...
Definition: DeclBase.h:1111
clang::Decl::isTagIdentifierNamespace
static bool isTagIdentifierNamespace(unsigned NS)
Definition: DeclBase.h:813
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:2366
clang::Decl::getAttrs
AttrVec & getAttrs()
Definition: DeclBase.h:490
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:992
clang::Decl::hasAttrs
bool hasAttrs() const
Definition: DeclBase.h:484
clang::DeclContext::filtered_decl_iterator::operator++
filtered_decl_iterator & operator++()
Definition: DeclBase.h:2172
llvm::cast_convert_val< ToTy, const ::clang::DeclContext, const ::clang::DeclContext >::doit
static const ToTy & doit(const ::clang::DeclContext &Val)
Definition: DeclBase.h:2504
llvm::cast_convert_val< const ::clang::DeclContext, FromTy *, FromTy * >::doit
static const ::clang::DeclContext * doit(const FromTy *Val)
Definition: DeclBase.h:2555
clang::DeclContextLookupResult::reference
iterator::reference reference
Definition: DeclBase.h:1234
clang::ExternalASTSource
Abstract interface for external sources of AST nodes.
Definition: ExternalASTSource.h:62
clang::Decl::isTemplateDecl
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:226
clang::DeclContext::getDeclKind
Decl::Kind getDeclKind() const
Definition: DeclBase.h:1777
clang::Decl::ModuleOwnershipKind::Visible
This declaration has an owning module, but is globally visible (typically because its owning module i...
clang::AR_Deprecated
Definition: DeclBase.h:77
false
#define false
Definition: stdbool.h:17
clang::Decl::redecl_iterator
Iterates through all the redeclarations of the same decl.
Definition: DeclBase.h:902
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
clang::Decl::getVersionIntroduced
VersionTuple getVersionIntroduced() const
Retrieve the version of the target platform in which this declaration was introduced.
Definition: DeclBase.cpp:626
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::DeclContext::specific_decl_iterator::value_type
SpecificDecl * value_type
Definition: DeclBase.h:2068
clang::Decl::setTopLevelDeclInObjCContainer
void setTopLevelDeclInObjCContainer(bool V=true)
Definition: DeclBase.h:597
clang::Decl::IDNS_Member
Members, declared with object declarations within tag definitions.
Definition: DeclBase.h:138
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::Decl::setModuleOwnershipKind
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:791
clang::OMPDeclareReductionDecl
This represents &#39;#pragma omp declare reduction ...&#39; directive.
Definition: DeclOpenMP.h:102
clang::DeclContext::filtered_decl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:2170
clang::Decl::OBJC_TQ_CSNullability
The nullability qualifier is set when the nullability of the result or parameter was expressed via a ...
Definition: DeclBase.h:212
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3219
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:377
clang::Decl::setReferenced
void setReferenced(bool R=true)
Definition: DeclBase.h:588
clang::DeclContext::classof
static bool classof(const DeclContext *D)
Definition: DeclBase.h:2390
clang::DeclContext::filtered_decl_iterator::iterator_category
std::forward_iterator_tag iterator_category
Definition: DeclBase.h:2153
DeclarationName.h
clang::DeclContext::udir_iterator::udir_iterator
udir_iterator(lookup_iterator I)
Definition: DeclBase.h:2309
AttrIterator.h
clang::Decl::hasCachedLinkage
bool hasCachedLinkage() const
Definition: DeclBase.h:411
clang::Decl::FOK_Declared
A friend of a previously-declared entity.
Definition: DeclBase.h:1103
IteratorBase
clang::DeclContextLookupResult::DeclContextLookupResult
DeclContextLookupResult(NamedDecl *Single)
Definition: DeclBase.h:1210
clang::DeclContext::hasExternalLexicalStorage
bool hasExternalLexicalStorage() const
Whether this DeclContext has external storage containing additional declarations that are lexically i...
Definition: DeclBase.h:2348
llvm::cast_convert_val< ::clang::DeclContext, FromTy, FromTy >::doit
::clang::DeclContext & doit(const FromTy &Val)
Definition: DeclBase.h:2534
clang::Decl::getCachedLinkage
Linkage getCachedLinkage() const
Definition: DeclBase.h:403
llvm::SmallVector
Definition: LLVM.h:35
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:702
clang::Decl::redecl_iterator::operator==
friend bool operator==(redecl_iterator x, redecl_iterator y)
Definition: DeclBase.h:935
clang::DeclContext::ddiag_range
llvm::iterator_range< DeclContext::ddiag_iterator > ddiag_range
Definition: DeclBase.h:2321
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:398
clang::DeclContext::specific_decl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:2094
clang::Decl::getNextRedeclarationImpl
virtual Decl * getNextRedeclarationImpl()
Returns the next redeclaration or itself if this is the only decl.
Definition: DeclBase.h:890
clang::cast_convert_decl_context< ToTy, true >::doit
static ToTy * doit(DeclContext *Val)
Definition: DeclBase.h:2483
clang::DeclContext::noload_decls_end
decl_iterator noload_decls_end() const
Definition: DeclBase.h:2045
clang::Decl::dropAttrs
void dropAttrs()
Definition: DeclBase.cpp:825
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::Decl::isWeakImported
bool isWeakImported() const
Determine whether this is a weak-imported symbol.
Definition: DeclBase.cpp:670
Specifiers.h
Defines various enumerations that describe declaration and type specifiers.
clang::DeclContext::decl_iterator
decl_iterator - Iterates through the declarations stored within this context.
Definition: DeclBase.h:1990
clang::ADOF_Default
Definition: ASTDumperUtils.h:22
clang::DeclContext::decl_iterator::decl_iterator
decl_iterator(Decl *C)
Definition: DeclBase.h:2002
clang::Decl::isThisDeclarationReferenced
bool isThisDeclarationReferenced() const
Whether this declaration was referenced.
Definition: DeclBase.h:586
clang::StoredDeclsMap
Definition: DeclContextInternals.h:238
clang::Decl::redecls_begin
redecl_iterator redecls_begin() const
Definition: DeclBase.h:952
clang::Decl::redecls
redecl_range redecls() const
Returns an iterator range for all the redeclarations of the same decl.
Definition: DeclBase.h:948
clang::cast_convert_decl_context::doit
static const ToTy * doit(const DeclContext *Val)
Definition: DeclBase.h:2467
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::Decl::updateOutOfDate
void updateOutOfDate(IdentifierInfo &II) const
Update a potentially out-of-date declaration.
Definition: DeclBase.cpp:63
clang::DeclContext::specific_decl_iterator::pointer
void pointer
Definition: DeclBase.h:2072
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1271
clang::TemplateDecl
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:402
clang::Decl::isTopLevelDeclInObjCContainer
bool isTopLevelDeclInObjCContainer() const
Whether this declaration is a top-level declaration (function, global variable, etc.) that is lexically inside an objc container definition.
Definition: DeclBase.h:593
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:979
clang::Decl::isFunctionOrFunctionTemplate
bool isFunctionOrFunctionTemplate() const
Whether this declaration is a function or function template.
Definition: DeclBase.h:1018
clang::DeclContext::isRecord
bool isRecord() const
Definition: DeclBase.h:1863
clang::Decl::attrs
attr_range attrs() const
Definition: DeclBase.h:501
clang::Decl::redecl_iterator::operator!=
friend bool operator!=(redecl_iterator x, redecl_iterator y)
Definition: DeclBase.h:939
clang::ASTReader
Reads an AST files chain containing the contents of a translation unit.
Definition: ASTReader.h:340
clang::index::SymbolKind::Module
clang::Decl::attr_iterator
AttrVec::const_iterator attr_iterator
Definition: DeclBase.h:498
clang::Decl::getAccess
AccessSpecifier getAccess() const
Definition: DeclBase.h:473
clang::Decl::IdentifierNamespace
IdentifierNamespace
IdentifierNamespace - The different namespaces in which declarations may appear.
Definition: DeclBase.h:117
clang::DeclarationName
The name of a declaration.
Definition: DeclarationName.h:145
clang::Decl::getKind
Kind getKind() const
Definition: DeclBase.h:432
clang::Decl::getNonClosureContext
Decl * getNonClosureContext()
Find the innermost non-closure ancestor of this declaration, walking up through blocks, lambdas, etc.
Definition: DeclBase.cpp:994
clang::DeclContext::decl_iterator::operator++
decl_iterator operator++(int)
Definition: DeclBase.h:2014
clang::DeclContext::getNonClosureAncestor
const Decl * getNonClosureAncestor() const
Definition: DeclBase.h:1920
clang::EnumDecl
Represents an enum.
Definition: Decl.h:3481
clang::ObjCMethodFamilyBitWidth
Definition: IdentifierTable.h:654
clang::Decl::IDNS_Tag
Tags, declared with &#39;struct foo;&#39; and referenced with &#39;struct foo&#39;.
Definition: DeclBase.h:127
clang::DeclContext::EnumDeclBits
EnumDeclBitfields EnumDeclBits
Definition: DeclBase.h:1722
clang::Decl::isHidden
bool isHidden() const
Determine whether this declaration might be hidden from name lookup.
Definition: DeclBase.h:774
clang::DeclContext::specific_decl_iterator
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext, providing only those that are of type SpecificDecl (or a class derived from it).
Definition: DeclBase.h:2053
clang::Decl::ModuleOwnershipKind::Unowned
This declaration is not owned by a module.
clang::Decl::setObjectOfFriendDecl
void setObjectOfFriendDecl(bool PerformFriendInjection=false)
Changes the namespace of this declaration to reflect that it&#39;s the object of a friend declaration...
Definition: DeclBase.h:1071
clang::Decl::OBJC_TQ_Oneway
Definition: DeclBase.h:207
clang::DependentDiagnostic
A dependently-generated diagnostic.
Definition: DependentDiagnostic.h:36
clang::Decl::setLocalExternDecl
void setLocalExternDecl()
Changes the namespace of this declaration to reflect that it&#39;s a function-local extern declaration...
Definition: DeclBase.h:1042
clang::DeclContext::getOuterLexicalRecordContext
const RecordDecl * getOuterLexicalRecordContext() const
Definition: DeclBase.h:1951
clang::Decl::setIsUsed
void setIsUsed()
Set whether the declaration is used, in the sense of odr-use.
Definition: DeclBase.h:573
clang::classof
static bool classof(const OMPClause *T)
Definition: OpenMPClause.h:3430
clang::ASTDeclReader
Definition: ASTReaderDecl.cpp:80
isFunctionOrMethod
static bool isFunctionOrMethod(const Decl *D)
isFunctionOrMethod - Return true if the given decl has function type (function or function-typed vari...
Definition: SemaDeclAttr.cpp:58
clang::Decl::setNonMemberOperator
void setNonMemberOperator()
Specifies that this declaration is a C++ overloaded non-member.
Definition: DeclBase.h:1120
clang::Decl::getAttr
T * getAttr() const
Definition: DeclBase.h:538
clang::Decl::getOwningModuleID
unsigned getOwningModuleID() const
Retrieve the global ID of the module that owns this particular declaration.
Definition: DeclBase.h:714
clang::Decl::~Decl
virtual ~Decl()
clang::DeclContext::filtered_decl_iterator::operator++
filtered_decl_iterator operator++(int)
Definition: DeclBase.h:2178
udir_iterator_base
clang::DeclContext::getLexicalParent
const DeclContext * getLexicalParent() const
Definition: DeclBase.h:1803
clang::Decl::getGlobalID
unsigned getGlobalID() const
Retrieve the global declaration ID associated with this declaration, which specifies where this Decl ...
Definition: DeclBase.h:706
clang::DeclContext::ddiag_iterator
An iterator over the dependent diagnostics in a dependent context.
Definition: DependentDiagnostic.h:125
clang::DeclContextLookupResult::pointer
iterator::pointer pointer
Definition: DeclBase.h:1233
clang::DeclContext::filtered_decl_iterator::value_type
SpecificDecl * value_type
Definition: DeclBase.h:2146
clang::DeclContext::ObjCMethodDeclBits
ObjCMethodDeclBitfields ObjCMethodDeclBits
Definition: DeclBase.h:1727
clang::DeclContext::decl_iterator::operator*
reference operator*() const
Definition: DeclBase.h:2004
clang::Decl::markUsed
void markUsed(ASTContext &C)
Mark the declaration used, in the sense of odr-use.
Definition: DeclBase.cpp:413
clang::Decl::specific_attrs
llvm::iterator_range< specific_attr_iterator< T > > specific_attrs() const
Definition: DeclBase.h:524
llvm::cast_convert_val< const ::clang::DeclContext, FromTy, FromTy >::doit
static const ::clang::DeclContext & doit(const FromTy &Val)
Definition: DeclBase.h:2548
ptrdiff_t
__PTRDIFF_TYPE__ ptrdiff_t
A signed integer type that is the result of subtracting two pointers.
Definition: opencl-c-base.h:48
SourceLocation.h
Defines the clang::SourceLocation class and associated facilities.
clang::Decl::isFirstDecl
bool isFirstDecl() const
True if this is the first declaration in its redeclaration chain.
Definition: DeclBase.h:969
clang::cast_convert_decl_context
Definition: DeclBase.h:2466
clang::DeclContext::filtered_decl_iterator::operator==
friend bool operator==(const filtered_decl_iterator &x, const filtered_decl_iterator &y)
Definition: DeclBase.h:2184
clang::Decl::ObjCDeclQualifier
ObjCDeclQualifier
ObjCDeclQualifier - &#39;Qualifiers&#39; written next to the return and parameter types in method declaration...
Definition: DeclBase.h:200
clang::DeclContext::decl_iterator::operator++
decl_iterator & operator++()
Definition: DeclBase.h:2009
clang::PrettyStackTraceDecl::PrettyStackTraceDecl
PrettyStackTraceDecl(const Decl *theDecl, SourceLocation L, SourceManager &sm, const char *Msg)
Definition: DeclBase.h:1185
clang::DeclContext::setUseQualifiedLookup
bool setUseQualifiedLookup(bool use=true) const
Definition: DeclBase.h:2379
clang::DeclContext::getEnclosingNamespaceContext
const DeclContext * getEnclosingNamespaceContext() const
Definition: DeclBase.h:1945
clang::Decl::redecl_iterator::operator->
value_type operator->() const
Definition: DeclBase.h:918
clang::DeclContext::RecordDeclBits
RecordDeclBitfields RecordDeclBits
Definition: DeclBase.h:1723
clang::AttrSyntax::C
clang::DeclContext::getPrimaryContext
const DeclContext * getPrimaryContext() const
Definition: DeclBase.h:1931
clang::Decl::Decl
Decl(Kind DK, DeclContext *DC, SourceLocation L)
Definition: DeclBase.h:379
clang::Decl::getPreviousDeclImpl
virtual Decl * getPreviousDeclImpl()
Implementation of getPreviousDecl(), to be overridden by any subclass that has a redeclaration chain...
Definition: DeclBase.h:894
clang::Decl::addAttr
void addAttr(Attr *A)
Definition: DeclBase.cpp:832
clang::ASTWriter
Writes an AST file containing the contents of a translation unit.
Definition: ASTWriter.h:96
iterator
clang::cast_convert_decl_context< ToTy, true >::doit
static const ToTy * doit(const DeclContext *Val)
Definition: DeclBase.h:2479
clang::DeclContextLookupResult::begin
iterator begin() const
Definition: DeclBase.h:1236
clang::Decl::CXXClassMemberWrapper
friend class CXXClassMemberWrapper
Definition: DeclBase.h:319
clang::ASTDeclWriter
Definition: ASTWriterDecl.cpp:35
clang::DeclContext::getParentASTContext
ASTContext & getParentASTContext() const
Definition: DeclBase.h:1813
clang::Decl::Kind
Kind
Lists the kind of concrete classes of Decl.
Definition: DeclBase.h:91
clang::Decl::dump
void dump() const
Definition: ASTDumper.cpp:179
clang::TranslationUnitDecl
The top declaration context.
Definition: Decl.h:82
clang::Decl::PrintStats
static void PrintStats()
Definition: DeclBase.cpp:169
clang::Decl::IDNS_LocalExtern
This declaration is a function-local extern declaration of a variable or function.
Definition: DeclBase.h:177
clang::DeclContext::getPrimaryContext
DeclContext * getPrimaryContext()
getPrimaryContext - There may be many different declarations of the same entity (including forward de...
Definition: DeclBase.cpp:1171
clang::Decl::EnableStatistics
static void EnableStatistics()
Definition: DeclBase.cpp:165
clang::DeclContext::decl_iterator::operator==
friend bool operator==(decl_iterator x, decl_iterator y)
Definition: DeclBase.h:2020
clang::DeclContext::ObjCContainerDeclBits
ObjCContainerDeclBitfields ObjCContainerDeclBits
Definition: DeclBase.h:1728
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:480
true
#define true
Definition: stdbool.h:16
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:207
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:607
clang::DeclContextLookupResult::iterator
Definition: DeclBase.h:1220
clang::Decl::setLexicalDeclContext
void setLexicalDeclContext(DeclContext *DC)
Definition: DeclBase.cpp:299
clang::DeclContext::OMPDeclareReductionDeclBits
OMPDeclareReductionDeclBitfields OMPDeclareReductionDeclBits
Definition: DeclBase.h:1724
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:223
clang::DeclContext::isTranslationUnit
bool isTranslationUnit() const
Definition: DeclBase.h:1859
clang::Decl::dropAttr
void dropAttr()
Definition: DeclBase.h:513
clang::Decl::setAccess
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:468
clang::Decl::getTranslationUnitDecl
const TranslationUnitDecl * getTranslationUnitDecl() const
Definition: DeclBase.h:458
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::UsingDirectiveDecl
Represents C++ using-directive.
Definition: DeclCXX.h:2863
clang::Decl::hasDefiningAttr
bool hasDefiningAttr() const
Return true if this declaration has an attribute which acts as definition of the entity, such as &#39;alias&#39; or &#39;ifunc&#39;.
Definition: DeclBase.cpp:456
clang::DeclContextLookupResult::empty
bool empty() const
Definition: DeclBase.h:1239
clang::Decl::isInStdNamespace
bool isInStdNamespace() const
Definition: DeclBase.cpp:357
clang::Decl::OBJC_TQ_Inout
Definition: DeclBase.h:203
clang::SourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:216
clang::Decl::getTranslationUnitDecl
TranslationUnitDecl * getTranslationUnitDecl()
Definition: DeclBase.cpp:362
clang::Decl::isTemplated
bool isTemplated() const
Determine whether this declaration is a templated entity (whether it is.
Definition: DeclBase.cpp:243
clang::SourceManager
This class handles loading and caching of source files into memory.
Definition: SourceManager.h:596
clang::Decl::getBodyRBrace
SourceLocation getBodyRBrace() const
getBodyRBrace - Gets the right brace of the body, if a body exists.
Definition: DeclBase.cpp:898
clang::Attr
Attr - This represents one attribute.
Definition: Attr.h:45
clang::Decl::getLocation
SourceLocation getLocation() const
Definition: DeclBase.h:429
clang::DeclContext::TagDeclBits
TagDeclBitfields TagDeclBits
Definition: DeclBase.h:1721
clang::DeclContext::decl_iterator::operator!=
friend bool operator!=(decl_iterator x, decl_iterator y)
Definition: DeclBase.h:2024
clang::DeclContext::getRedeclContext
const DeclContext * getRedeclContext() const
Definition: DeclBase.h:1939
clang::Decl::isUnavailable
bool isUnavailable(std::string *Message=nullptr) const
Determine whether this declaration is marked &#39;unavailable&#39;.
Definition: DeclBase.h:680
clang::DeclContext::decls_end
decl_iterator decls_end() const
Definition: DeclBase.h:2035
clang::Decl::IDNS_Using
This declaration is a using declaration.
Definition: DeclBase.h:165
clang::DeclContext::filtered_decl_iterator::difference_type
std::iterator_traits< DeclContext::decl_iterator >::difference_type difference_type
Definition: DeclBase.h:2152
clang::Decl::getParentFunctionOrMethod
DeclContext * getParentFunctionOrMethod()
Definition: DeclBase.h:871
clang::PrettyStackTraceDecl
PrettyStackTraceDecl - If a crash occurs, indicate that it happened when doing something to a specifi...
Definition: DeclBase.h:1178