xref: /freebsd/contrib/llvm-project/clang/lib/ASTMatchers/ASTMatchersInternal.cpp (revision aa1a8ff2d6dbc51ef058f46f3db5a8bb77967145) 
1 //===- ASTMatchersInternal.cpp - Structural query framework ---------------===//
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 //  Implements the base layer of the matcher framework.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/ASTMatchers/ASTMatchersInternal.h"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/ASTTypeTraits.h"
16 #include "clang/AST/Decl.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/ParentMapContext.h"
19 #include "clang/AST/PrettyPrinter.h"
20 #include "clang/ASTMatchers/ASTMatchers.h"
21 #include "clang/Basic/LLVM.h"
22 #include "clang/Lex/Lexer.h"
23 #include "llvm/ADT/ArrayRef.h"
24 #include "llvm/ADT/IntrusiveRefCntPtr.h"
25 #include "llvm/ADT/SmallString.h"
26 #include "llvm/ADT/SmallVector.h"
27 #include "llvm/ADT/StringRef.h"
28 #include "llvm/Support/Casting.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/ManagedStatic.h"
31 #include "llvm/Support/Regex.h"
32 #include "llvm/Support/WithColor.h"
33 #include "llvm/Support/raw_ostream.h"
34 #include <algorithm>
35 #include <cassert>
36 #include <cstddef>
37 #include <optional>
38 #include <string>
39 #include <utility>
40 #include <vector>
41 
42 namespace clang {
43 namespace ast_matchers {
44 
45 AST_MATCHER_P(ObjCMessageExpr, hasAnySelectorMatcher, std::vector<std::string>,
46               Matches) {
47   return llvm::is_contained(Matches, Node.getSelector().getAsString());
48 }
49 
50 namespace internal {
51 
52 static bool notUnaryOperator(const DynTypedNode &DynNode,
53                              ASTMatchFinder *Finder,
54                              BoundNodesTreeBuilder *Builder,
55                              ArrayRef<DynTypedMatcher> InnerMatchers);
56 
57 static bool allOfVariadicOperator(const DynTypedNode &DynNode,
58                                   ASTMatchFinder *Finder,
59                                   BoundNodesTreeBuilder *Builder,
60                                   ArrayRef<DynTypedMatcher> InnerMatchers);
61 
62 static bool eachOfVariadicOperator(const DynTypedNode &DynNode,
63                                    ASTMatchFinder *Finder,
64                                    BoundNodesTreeBuilder *Builder,
65                                    ArrayRef<DynTypedMatcher> InnerMatchers);
66 
67 static bool anyOfVariadicOperator(const DynTypedNode &DynNode,
68                                   ASTMatchFinder *Finder,
69                                   BoundNodesTreeBuilder *Builder,
70                                   ArrayRef<DynTypedMatcher> InnerMatchers);
71 
72 static bool optionallyVariadicOperator(const DynTypedNode &DynNode,
73                                        ASTMatchFinder *Finder,
74                                        BoundNodesTreeBuilder *Builder,
75                                        ArrayRef<DynTypedMatcher> InnerMatchers);
76 
77 bool matchesAnyBase(const CXXRecordDecl &Node,
78                     const Matcher<CXXBaseSpecifier> &BaseSpecMatcher,
79                     ASTMatchFinder *Finder, BoundNodesTreeBuilder *Builder) {
80   if (!Node.hasDefinition())
81     return false;
82 
83   CXXBasePaths Paths;
84   Paths.setOrigin(&Node);
85 
86   const auto basePredicate =
87       [Finder, Builder, &BaseSpecMatcher](const CXXBaseSpecifier *BaseSpec,
88                                           CXXBasePath &IgnoredParam) {
89         BoundNodesTreeBuilder Result(*Builder);
90         if (BaseSpecMatcher.matches(*BaseSpec, Finder, &Result)) {
91           *Builder = std::move(Result);
92           return true;
93         }
94         return false;
95       };
96 
97   return Node.lookupInBases(basePredicate, Paths,
98                             /*LookupInDependent =*/true);
99 }
100 
101 void BoundNodesTreeBuilder::visitMatches(Visitor *ResultVisitor) {
102   if (Bindings.empty())
103     Bindings.push_back(BoundNodesMap());
104   for (BoundNodesMap &Binding : Bindings) {
105     ResultVisitor->visitMatch(BoundNodes(Binding));
106   }
107 }
108 
109 namespace {
110 
111 using VariadicOperatorFunction = bool (*)(
112     const DynTypedNode &DynNode, ASTMatchFinder *Finder,
113     BoundNodesTreeBuilder *Builder, ArrayRef<DynTypedMatcher> InnerMatchers);
114 
115 template <VariadicOperatorFunction Func>
116 class VariadicMatcher : public DynMatcherInterface {
117 public:
118   VariadicMatcher(std::vector<DynTypedMatcher> InnerMatchers)
119       : InnerMatchers(std::move(InnerMatchers)) {}
120 
121   bool dynMatches(const DynTypedNode &DynNode, ASTMatchFinder *Finder,
122                   BoundNodesTreeBuilder *Builder) const override {
123     return Func(DynNode, Finder, Builder, InnerMatchers);
124   }
125 
126 private:
127   std::vector<DynTypedMatcher> InnerMatchers;
128 };
129 
130 class IdDynMatcher : public DynMatcherInterface {
131 public:
132   IdDynMatcher(StringRef ID,
133                IntrusiveRefCntPtr<DynMatcherInterface> InnerMatcher)
134       : ID(ID), InnerMatcher(std::move(InnerMatcher)) {}
135 
136   bool dynMatches(const DynTypedNode &DynNode, ASTMatchFinder *Finder,
137                   BoundNodesTreeBuilder *Builder) const override {
138     bool Result = InnerMatcher->dynMatches(DynNode, Finder, Builder);
139     if (Result) Builder->setBinding(ID, DynNode);
140     return Result;
141   }
142 
143   std::optional<clang::TraversalKind> TraversalKind() const override {
144     return InnerMatcher->TraversalKind();
145   }
146 
147 private:
148   const std::string ID;
149   const IntrusiveRefCntPtr<DynMatcherInterface> InnerMatcher;
150 };
151 
152 /// A matcher that always returns true.
153 class TrueMatcherImpl : public DynMatcherInterface {
154 public:
155   TrueMatcherImpl() = default;
156 
157   bool dynMatches(const DynTypedNode &, ASTMatchFinder *,
158                   BoundNodesTreeBuilder *) const override {
159     return true;
160   }
161 };
162 
163 /// A matcher that specifies a particular \c TraversalKind.
164 ///
165 /// The kind provided to the constructor overrides any kind that may be
166 /// specified by the `InnerMatcher`.
167 class DynTraversalMatcherImpl : public DynMatcherInterface {
168 public:
169   explicit DynTraversalMatcherImpl(
170       clang::TraversalKind TK,
171       IntrusiveRefCntPtr<DynMatcherInterface> InnerMatcher)
172       : TK(TK), InnerMatcher(std::move(InnerMatcher)) {}
173 
174   bool dynMatches(const DynTypedNode &DynNode, ASTMatchFinder *Finder,
175                   BoundNodesTreeBuilder *Builder) const override {
176     return this->InnerMatcher->dynMatches(DynNode, Finder, Builder);
177   }
178 
179   std::optional<clang::TraversalKind> TraversalKind() const override {
180     return TK;
181   }
182 
183 private:
184   clang::TraversalKind TK;
185   IntrusiveRefCntPtr<DynMatcherInterface> InnerMatcher;
186 };
187 
188 } // namespace
189 
190 bool ASTMatchFinder::isTraversalIgnoringImplicitNodes() const {
191   return getASTContext().getParentMapContext().getTraversalKind() ==
192          TK_IgnoreUnlessSpelledInSource;
193 }
194 
195 DynTypedMatcher
196 DynTypedMatcher::constructVariadic(DynTypedMatcher::VariadicOperator Op,
197                                    ASTNodeKind SupportedKind,
198                                    std::vector<DynTypedMatcher> InnerMatchers) {
199   assert(!InnerMatchers.empty() && "Array must not be empty.");
200   assert(llvm::all_of(InnerMatchers,
201                       [SupportedKind](const DynTypedMatcher &M) {
202                         return M.canConvertTo(SupportedKind);
203                       }) &&
204          "InnerMatchers must be convertible to SupportedKind!");
205 
206   // We must relax the restrict kind here.
207   // The different operators might deal differently with a mismatch.
208   // Make it the same as SupportedKind, since that is the broadest type we are
209   // allowed to accept.
210   auto RestrictKind = SupportedKind;
211 
212   switch (Op) {
213   case VO_AllOf:
214     // In the case of allOf() we must pass all the checks, so making
215     // RestrictKind the most restrictive can save us time. This way we reject
216     // invalid types earlier and we can elide the kind checks inside the
217     // matcher.
218     for (auto &IM : InnerMatchers) {
219       RestrictKind =
220           ASTNodeKind::getMostDerivedType(RestrictKind, IM.RestrictKind);
221     }
222     return DynTypedMatcher(
223         SupportedKind, RestrictKind,
224         new VariadicMatcher<allOfVariadicOperator>(std::move(InnerMatchers)));
225 
226   case VO_AnyOf:
227     return DynTypedMatcher(
228         SupportedKind, RestrictKind,
229         new VariadicMatcher<anyOfVariadicOperator>(std::move(InnerMatchers)));
230 
231   case VO_EachOf:
232     return DynTypedMatcher(
233         SupportedKind, RestrictKind,
234         new VariadicMatcher<eachOfVariadicOperator>(std::move(InnerMatchers)));
235 
236   case VO_Optionally:
237     return DynTypedMatcher(SupportedKind, RestrictKind,
238                            new VariadicMatcher<optionallyVariadicOperator>(
239                                std::move(InnerMatchers)));
240 
241   case VO_UnaryNot:
242     // FIXME: Implement the Not operator to take a single matcher instead of a
243     // vector.
244     return DynTypedMatcher(
245         SupportedKind, RestrictKind,
246         new VariadicMatcher<notUnaryOperator>(std::move(InnerMatchers)));
247   }
248   llvm_unreachable("Invalid Op value.");
249 }
250 
251 DynTypedMatcher
252 DynTypedMatcher::constructRestrictedWrapper(const DynTypedMatcher &InnerMatcher,
253                                             ASTNodeKind RestrictKind) {
254   DynTypedMatcher Copy = InnerMatcher;
255   Copy.RestrictKind = RestrictKind;
256   return Copy;
257 }
258 
259 DynTypedMatcher DynTypedMatcher::withTraversalKind(TraversalKind TK) {
260   auto Copy = *this;
261   Copy.Implementation =
262       new DynTraversalMatcherImpl(TK, std::move(Copy.Implementation));
263   return Copy;
264 }
265 
266 DynTypedMatcher DynTypedMatcher::trueMatcher(ASTNodeKind NodeKind) {
267   // We only ever need one instance of TrueMatcherImpl, so we create a static
268   // instance and reuse it to reduce the overhead of the matcher and increase
269   // the chance of cache hits.
270   static const llvm::IntrusiveRefCntPtr<TrueMatcherImpl> Instance =
271       new TrueMatcherImpl();
272   return DynTypedMatcher(NodeKind, NodeKind, Instance);
273 }
274 
275 bool DynTypedMatcher::canMatchNodesOfKind(ASTNodeKind Kind) const {
276   return RestrictKind.isBaseOf(Kind);
277 }
278 
279 DynTypedMatcher DynTypedMatcher::dynCastTo(const ASTNodeKind Kind) const {
280   auto Copy = *this;
281   Copy.SupportedKind = Kind;
282   Copy.RestrictKind = ASTNodeKind::getMostDerivedType(Kind, RestrictKind);
283   return Copy;
284 }
285 
286 bool DynTypedMatcher::matches(const DynTypedNode &DynNode,
287                               ASTMatchFinder *Finder,
288                               BoundNodesTreeBuilder *Builder) const {
289   TraversalKindScope RAII(Finder->getASTContext(),
290                           Implementation->TraversalKind());
291 
292   if (Finder->isTraversalIgnoringImplicitNodes() &&
293       Finder->IsMatchingInASTNodeNotSpelledInSource())
294     return false;
295 
296   if (!Finder->isTraversalIgnoringImplicitNodes() &&
297       Finder->IsMatchingInASTNodeNotAsIs())
298     return false;
299 
300   auto N =
301       Finder->getASTContext().getParentMapContext().traverseIgnored(DynNode);
302 
303   if (RestrictKind.isBaseOf(N.getNodeKind()) &&
304       Implementation->dynMatches(N, Finder, Builder)) {
305     return true;
306   }
307   // Delete all bindings when a matcher does not match.
308   // This prevents unexpected exposure of bound nodes in unmatches
309   // branches of the match tree.
310   Builder->removeBindings([](const BoundNodesMap &) { return true; });
311   return false;
312 }
313 
314 bool DynTypedMatcher::matchesNoKindCheck(const DynTypedNode &DynNode,
315                                          ASTMatchFinder *Finder,
316                                          BoundNodesTreeBuilder *Builder) const {
317   TraversalKindScope raii(Finder->getASTContext(),
318                           Implementation->TraversalKind());
319 
320   if (Finder->isTraversalIgnoringImplicitNodes() &&
321       Finder->IsMatchingInASTNodeNotSpelledInSource())
322     return false;
323 
324   if (!Finder->isTraversalIgnoringImplicitNodes() &&
325       Finder->IsMatchingInASTNodeNotAsIs())
326     return false;
327 
328   auto N =
329       Finder->getASTContext().getParentMapContext().traverseIgnored(DynNode);
330 
331   assert(RestrictKind.isBaseOf(N.getNodeKind()));
332   if (Implementation->dynMatches(N, Finder, Builder)) {
333     return true;
334   }
335   // Delete all bindings when a matcher does not match.
336   // This prevents unexpected exposure of bound nodes in unmatches
337   // branches of the match tree.
338   Builder->removeBindings([](const BoundNodesMap &) { return true; });
339   return false;
340 }
341 
342 std::optional<DynTypedMatcher> DynTypedMatcher::tryBind(StringRef ID) const {
343   if (!AllowBind)
344     return std::nullopt;
345   auto Result = *this;
346   Result.Implementation =
347       new IdDynMatcher(ID, std::move(Result.Implementation));
348   return std::move(Result);
349 }
350 
351 bool DynTypedMatcher::canConvertTo(ASTNodeKind To) const {
352   const auto From = getSupportedKind();
353   auto QualKind = ASTNodeKind::getFromNodeKind<QualType>();
354   auto TypeKind = ASTNodeKind::getFromNodeKind<Type>();
355   /// Mimic the implicit conversions of Matcher<>.
356   /// - From Matcher<Type> to Matcher<QualType>
357   if (From.isSame(TypeKind) && To.isSame(QualKind)) return true;
358   /// - From Matcher<Base> to Matcher<Derived>
359   return From.isBaseOf(To);
360 }
361 
362 void BoundNodesTreeBuilder::addMatch(const BoundNodesTreeBuilder &Other) {
363   Bindings.append(Other.Bindings.begin(), Other.Bindings.end());
364 }
365 
366 static bool notUnaryOperator(const DynTypedNode &DynNode,
367                              ASTMatchFinder *Finder,
368                              BoundNodesTreeBuilder *Builder,
369                              ArrayRef<DynTypedMatcher> InnerMatchers) {
370   if (InnerMatchers.size() != 1)
371     return false;
372 
373   // The 'unless' matcher will always discard the result:
374   // If the inner matcher doesn't match, unless returns true,
375   // but the inner matcher cannot have bound anything.
376   // If the inner matcher matches, the result is false, and
377   // any possible binding will be discarded.
378   // We still need to hand in all the bound nodes up to this
379   // point so the inner matcher can depend on bound nodes,
380   // and we need to actively discard the bound nodes, otherwise
381   // the inner matcher will reset the bound nodes if it doesn't
382   // match, but this would be inversed by 'unless'.
383   BoundNodesTreeBuilder Discard(*Builder);
384   return !InnerMatchers[0].matches(DynNode, Finder, &Discard);
385 }
386 
387 static bool allOfVariadicOperator(const DynTypedNode &DynNode,
388                                   ASTMatchFinder *Finder,
389                                   BoundNodesTreeBuilder *Builder,
390                                   ArrayRef<DynTypedMatcher> InnerMatchers) {
391   // allOf leads to one matcher for each alternative in the first
392   // matcher combined with each alternative in the second matcher.
393   // Thus, we can reuse the same Builder.
394   return llvm::all_of(InnerMatchers, [&](const DynTypedMatcher &InnerMatcher) {
395     return InnerMatcher.matchesNoKindCheck(DynNode, Finder, Builder);
396   });
397 }
398 
399 static bool eachOfVariadicOperator(const DynTypedNode &DynNode,
400                                    ASTMatchFinder *Finder,
401                                    BoundNodesTreeBuilder *Builder,
402                                    ArrayRef<DynTypedMatcher> InnerMatchers) {
403   BoundNodesTreeBuilder Result;
404   bool Matched = false;
405   for (const DynTypedMatcher &InnerMatcher : InnerMatchers) {
406     BoundNodesTreeBuilder BuilderInner(*Builder);
407     if (InnerMatcher.matches(DynNode, Finder, &BuilderInner)) {
408       Matched = true;
409       Result.addMatch(BuilderInner);
410     }
411   }
412   *Builder = std::move(Result);
413   return Matched;
414 }
415 
416 static bool anyOfVariadicOperator(const DynTypedNode &DynNode,
417                                   ASTMatchFinder *Finder,
418                                   BoundNodesTreeBuilder *Builder,
419                                   ArrayRef<DynTypedMatcher> InnerMatchers) {
420   for (const DynTypedMatcher &InnerMatcher : InnerMatchers) {
421     BoundNodesTreeBuilder Result = *Builder;
422     if (InnerMatcher.matches(DynNode, Finder, &Result)) {
423       *Builder = std::move(Result);
424       return true;
425     }
426   }
427   return false;
428 }
429 
430 static bool
431 optionallyVariadicOperator(const DynTypedNode &DynNode, ASTMatchFinder *Finder,
432                            BoundNodesTreeBuilder *Builder,
433                            ArrayRef<DynTypedMatcher> InnerMatchers) {
434   if (InnerMatchers.size() != 1)
435     return false;
436 
437   BoundNodesTreeBuilder Result(*Builder);
438   if (InnerMatchers[0].matches(DynNode, Finder, &Result))
439     *Builder = std::move(Result);
440   return true;
441 }
442 
443 inline static
444 std::vector<std::string> vectorFromRefs(ArrayRef<const StringRef *> NameRefs) {
445   std::vector<std::string> Names;
446   Names.reserve(NameRefs.size());
447   for (auto *Name : NameRefs)
448     Names.emplace_back(*Name);
449   return Names;
450 }
451 
452 Matcher<NamedDecl> hasAnyNameFunc(ArrayRef<const StringRef *> NameRefs) {
453   return internal::Matcher<NamedDecl>(
454       new internal::HasNameMatcher(vectorFromRefs(NameRefs)));
455 }
456 
457 Matcher<ObjCMessageExpr> hasAnySelectorFunc(
458     ArrayRef<const StringRef *> NameRefs) {
459   return hasAnySelectorMatcher(vectorFromRefs(NameRefs));
460 }
461 
462 HasOpNameMatcher hasAnyOperatorNameFunc(ArrayRef<const StringRef *> NameRefs) {
463   return HasOpNameMatcher(vectorFromRefs(NameRefs));
464 }
465 
466 HasOverloadOpNameMatcher
467 hasAnyOverloadedOperatorNameFunc(ArrayRef<const StringRef *> NameRefs) {
468   return HasOverloadOpNameMatcher(vectorFromRefs(NameRefs));
469 }
470 
471 HasNameMatcher::HasNameMatcher(std::vector<std::string> N)
472     : UseUnqualifiedMatch(
473           llvm::all_of(N, [](StringRef Name) { return !Name.contains("::"); })),
474       Names(std::move(N)) {
475 #ifndef NDEBUG
476   for (StringRef Name : Names)
477     assert(!Name.empty());
478 #endif
479 }
480 
481 static bool consumeNameSuffix(StringRef &FullName, StringRef Suffix) {
482   StringRef Name = FullName;
483   if (!Name.ends_with(Suffix))
484     return false;
485   Name = Name.drop_back(Suffix.size());
486   if (!Name.empty()) {
487     if (!Name.ends_with("::"))
488       return false;
489     Name = Name.drop_back(2);
490   }
491   FullName = Name;
492   return true;
493 }
494 
495 static StringRef getNodeName(const NamedDecl &Node,
496                              llvm::SmallString<128> &Scratch) {
497   // Simple name.
498   if (Node.getIdentifier())
499     return Node.getName();
500 
501   if (Node.getDeclName()) {
502     // Name needs to be constructed.
503     Scratch.clear();
504     llvm::raw_svector_ostream OS(Scratch);
505     Node.printName(OS);
506     return OS.str();
507   }
508 
509   return "(anonymous)";
510 }
511 
512 static StringRef getNodeName(const RecordDecl &Node,
513                              llvm::SmallString<128> &Scratch) {
514   if (Node.getIdentifier()) {
515     return Node.getName();
516   }
517   Scratch.clear();
518   return ("(anonymous " + Node.getKindName() + ")").toStringRef(Scratch);
519 }
520 
521 static StringRef getNodeName(const NamespaceDecl &Node,
522                              llvm::SmallString<128> &Scratch) {
523   return Node.isAnonymousNamespace() ? "(anonymous namespace)" : Node.getName();
524 }
525 
526 namespace {
527 
528 class PatternSet {
529 public:
530   PatternSet(ArrayRef<std::string> Names) {
531     Patterns.reserve(Names.size());
532     for (StringRef Name : Names)
533       Patterns.push_back({Name, Name.starts_with("::")});
534   }
535 
536   /// Consumes the name suffix from each pattern in the set and removes the ones
537   /// that didn't match.
538   /// Return true if there are still any patterns left.
539   bool consumeNameSuffix(StringRef NodeName, bool CanSkip) {
540     for (size_t I = 0; I < Patterns.size();) {
541       if (::clang::ast_matchers::internal::consumeNameSuffix(Patterns[I].P,
542                                                              NodeName) ||
543           CanSkip) {
544         ++I;
545       } else {
546         Patterns.erase(Patterns.begin() + I);
547       }
548     }
549     return !Patterns.empty();
550   }
551 
552   /// Check if any of the patterns are a match.
553   /// A match will be a pattern that was fully consumed, that also matches the
554   /// 'fully qualified' requirement.
555   bool foundMatch(bool AllowFullyQualified) const {
556     return llvm::any_of(Patterns, [&](const Pattern &Pattern) {
557       return Pattern.P.empty() &&
558              (AllowFullyQualified || !Pattern.IsFullyQualified);
559     });
560   }
561 
562 private:
563   struct Pattern {
564     StringRef P;
565     bool IsFullyQualified;
566   };
567 
568   llvm::SmallVector<Pattern, 8> Patterns;
569 };
570 
571 } // namespace
572 
573 bool HasNameMatcher::matchesNodeUnqualified(const NamedDecl &Node) const {
574   assert(UseUnqualifiedMatch);
575   llvm::SmallString<128> Scratch;
576   StringRef NodeName = getNodeName(Node, Scratch);
577   return llvm::any_of(Names, [&](StringRef Name) {
578     return consumeNameSuffix(Name, NodeName) && Name.empty();
579   });
580 }
581 
582 bool HasNameMatcher::matchesNodeFullFast(const NamedDecl &Node) const {
583   PatternSet Patterns(Names);
584   llvm::SmallString<128> Scratch;
585 
586   // This function is copied and adapted from NamedDecl::printQualifiedName()
587   // By matching each part individually we optimize in a couple of ways:
588   //  - We can exit early on the first failure.
589   //  - We can skip inline/anonymous namespaces without another pass.
590   //  - We print one name at a time, reducing the chance of overflowing the
591   //    inlined space of the SmallString.
592 
593   // First, match the name.
594   if (!Patterns.consumeNameSuffix(getNodeName(Node, Scratch),
595                                   /*CanSkip=*/false))
596     return false;
597 
598   // Try to match each declaration context.
599   // We are allowed to skip anonymous and inline namespaces if they don't match.
600   const DeclContext *Ctx = Node.getDeclContext();
601 
602   if (Ctx->isFunctionOrMethod())
603     return Patterns.foundMatch(/*AllowFullyQualified=*/false);
604 
605   for (; Ctx; Ctx = Ctx->getParent()) {
606     // Linkage Spec can just be ignored
607     // FIXME: Any other DeclContext kinds that can be safely disregarded
608     if (isa<LinkageSpecDecl>(Ctx))
609       continue;
610     if (!isa<NamedDecl>(Ctx))
611       break;
612     if (Patterns.foundMatch(/*AllowFullyQualified=*/false))
613       return true;
614 
615     if (const auto *ND = dyn_cast<NamespaceDecl>(Ctx)) {
616       // If it matches (or we can skip it), continue.
617       if (Patterns.consumeNameSuffix(getNodeName(*ND, Scratch),
618                                      /*CanSkip=*/ND->isAnonymousNamespace() ||
619                                          ND->isInline()))
620         continue;
621       return false;
622     }
623     if (const auto *RD = dyn_cast<RecordDecl>(Ctx)) {
624       if (!isa<ClassTemplateSpecializationDecl>(Ctx)) {
625         if (Patterns.consumeNameSuffix(getNodeName(*RD, Scratch),
626                                        /*CanSkip=*/false))
627           continue;
628 
629         return false;
630       }
631     }
632 
633     // We don't know how to deal with this DeclContext.
634     // Fallback to the slow version of the code.
635     return matchesNodeFullSlow(Node);
636   }
637 
638   return Patterns.foundMatch(/*AllowFullyQualified=*/true);
639 }
640 
641 bool HasNameMatcher::matchesNodeFullSlow(const NamedDecl &Node) const {
642   const bool SkipUnwrittenCases[] = {false, true};
643   for (bool SkipUnwritten : SkipUnwrittenCases) {
644     llvm::SmallString<128> NodeName = StringRef("::");
645     llvm::raw_svector_ostream OS(NodeName);
646 
647     PrintingPolicy Policy = Node.getASTContext().getPrintingPolicy();
648     Policy.SuppressUnwrittenScope = SkipUnwritten;
649     Policy.SuppressInlineNamespace = SkipUnwritten;
650     Node.printQualifiedName(OS, Policy);
651 
652     const StringRef FullName = OS.str();
653 
654     for (const StringRef Pattern : Names) {
655       if (Pattern.starts_with("::")) {
656         if (FullName == Pattern)
657           return true;
658       } else if (FullName.ends_with(Pattern) &&
659                  FullName.drop_back(Pattern.size()).ends_with("::")) {
660         return true;
661       }
662     }
663   }
664 
665   return false;
666 }
667 
668 bool HasNameMatcher::matchesNode(const NamedDecl &Node) const {
669   assert(matchesNodeFullFast(Node) == matchesNodeFullSlow(Node));
670   if (UseUnqualifiedMatch) {
671     assert(matchesNodeUnqualified(Node) == matchesNodeFullFast(Node));
672     return matchesNodeUnqualified(Node);
673   }
674   return matchesNodeFullFast(Node);
675 }
676 
677 // Checks whether \p Loc points to a token with source text of \p TokenText.
678 static bool isTokenAtLoc(const SourceManager &SM, const LangOptions &LangOpts,
679                          StringRef Text, SourceLocation Loc) {
680   llvm::SmallString<16> Buffer;
681   bool Invalid = false;
682   // Since `Loc` may point into an expansion buffer, which has no corresponding
683   // source, we need to look at the spelling location to read the actual source.
684   StringRef TokenText = Lexer::getSpelling(SM.getSpellingLoc(Loc), Buffer, SM,
685                                            LangOpts, &Invalid);
686   return !Invalid && Text == TokenText;
687 }
688 
689 std::optional<SourceLocation>
690 getExpansionLocOfMacro(StringRef MacroName, SourceLocation Loc,
691                        const ASTContext &Context) {
692   auto &SM = Context.getSourceManager();
693   const LangOptions &LangOpts = Context.getLangOpts();
694   while (Loc.isMacroID()) {
695     SrcMgr::ExpansionInfo Expansion =
696         SM.getSLocEntry(SM.getFileID(Loc)).getExpansion();
697     if (Expansion.isMacroArgExpansion())
698       // Check macro argument for an expansion of the given macro. For example,
699       // `F(G(3))`, where `MacroName` is `G`.
700       if (std::optional<SourceLocation> ArgLoc = getExpansionLocOfMacro(
701               MacroName, Expansion.getSpellingLoc(), Context))
702         return ArgLoc;
703     Loc = Expansion.getExpansionLocStart();
704     if (isTokenAtLoc(SM, LangOpts, MacroName, Loc))
705       return Loc;
706   }
707   return std::nullopt;
708 }
709 
710 std::shared_ptr<llvm::Regex> createAndVerifyRegex(StringRef Regex,
711                                                   llvm::Regex::RegexFlags Flags,
712                                                   StringRef MatcherID) {
713   assert(!Regex.empty() && "Empty regex string");
714   auto SharedRegex = std::make_shared<llvm::Regex>(Regex, Flags);
715   std::string Error;
716   if (!SharedRegex->isValid(Error)) {
717     llvm::WithColor::error()
718         << "building matcher '" << MatcherID << "': " << Error << "\n";
719     llvm::WithColor::note() << " input was '" << Regex << "'\n";
720   }
721   return SharedRegex;
722 }
723 } // end namespace internal
724 
725 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAutoreleasePoolStmt>
726     autoreleasePoolStmt;
727 const internal::VariadicDynCastAllOfMatcher<Decl, TranslationUnitDecl>
728     translationUnitDecl;
729 const internal::VariadicDynCastAllOfMatcher<Decl, TypedefDecl> typedefDecl;
730 const internal::VariadicDynCastAllOfMatcher<Decl, TypedefNameDecl>
731     typedefNameDecl;
732 const internal::VariadicDynCastAllOfMatcher<Decl, TypeAliasDecl> typeAliasDecl;
733 const internal::VariadicDynCastAllOfMatcher<Decl, TypeAliasTemplateDecl>
734     typeAliasTemplateDecl;
735 const internal::VariadicAllOfMatcher<Decl> decl;
736 const internal::VariadicDynCastAllOfMatcher<Decl, DecompositionDecl> decompositionDecl;
737 const internal::VariadicDynCastAllOfMatcher<Decl, BindingDecl> bindingDecl;
738 const internal::VariadicDynCastAllOfMatcher<Decl, LinkageSpecDecl>
739     linkageSpecDecl;
740 const internal::VariadicDynCastAllOfMatcher<Decl, NamedDecl> namedDecl;
741 const internal::VariadicDynCastAllOfMatcher<Decl, LabelDecl> labelDecl;
742 const internal::VariadicDynCastAllOfMatcher<Decl, NamespaceDecl> namespaceDecl;
743 const internal::VariadicDynCastAllOfMatcher<Decl, NamespaceAliasDecl>
744     namespaceAliasDecl;
745 const internal::VariadicDynCastAllOfMatcher<Decl, RecordDecl> recordDecl;
746 const internal::VariadicDynCastAllOfMatcher<Decl, CXXRecordDecl> cxxRecordDecl;
747 const internal::VariadicDynCastAllOfMatcher<Decl, ClassTemplateDecl>
748     classTemplateDecl;
749 const internal::VariadicDynCastAllOfMatcher<Decl,
750                                             ClassTemplateSpecializationDecl>
751     classTemplateSpecializationDecl;
752 const internal::VariadicDynCastAllOfMatcher<
753     Decl, ClassTemplatePartialSpecializationDecl>
754     classTemplatePartialSpecializationDecl;
755 const internal::VariadicDynCastAllOfMatcher<Decl, DeclaratorDecl>
756     declaratorDecl;
757 const internal::VariadicDynCastAllOfMatcher<Decl, ParmVarDecl> parmVarDecl;
758 const internal::VariadicDynCastAllOfMatcher<Decl, AccessSpecDecl>
759     accessSpecDecl;
760 const internal::VariadicAllOfMatcher<CXXBaseSpecifier> cxxBaseSpecifier;
761 const internal::VariadicAllOfMatcher<CXXCtorInitializer> cxxCtorInitializer;
762 const internal::VariadicAllOfMatcher<TemplateArgument> templateArgument;
763 const internal::VariadicAllOfMatcher<TemplateArgumentLoc> templateArgumentLoc;
764 const internal::VariadicAllOfMatcher<TemplateName> templateName;
765 const internal::VariadicDynCastAllOfMatcher<Decl, NonTypeTemplateParmDecl>
766     nonTypeTemplateParmDecl;
767 const internal::VariadicDynCastAllOfMatcher<Decl, TemplateTypeParmDecl>
768     templateTypeParmDecl;
769 const internal::VariadicDynCastAllOfMatcher<Decl, TemplateTemplateParmDecl>
770     templateTemplateParmDecl;
771 
772 const internal::VariadicAllOfMatcher<LambdaCapture> lambdaCapture;
773 const internal::VariadicAllOfMatcher<QualType> qualType;
774 const internal::VariadicAllOfMatcher<Type> type;
775 const internal::VariadicAllOfMatcher<TypeLoc> typeLoc;
776 
777 const internal::VariadicDynCastAllOfMatcher<TypeLoc, QualifiedTypeLoc>
778     qualifiedTypeLoc;
779 const internal::VariadicDynCastAllOfMatcher<TypeLoc, PointerTypeLoc>
780     pointerTypeLoc;
781 const internal::VariadicDynCastAllOfMatcher<TypeLoc, ReferenceTypeLoc>
782     referenceTypeLoc;
783 const internal::VariadicDynCastAllOfMatcher<TypeLoc,
784                                             TemplateSpecializationTypeLoc>
785     templateSpecializationTypeLoc;
786 const internal::VariadicDynCastAllOfMatcher<TypeLoc, ElaboratedTypeLoc>
787     elaboratedTypeLoc;
788 
789 const internal::VariadicDynCastAllOfMatcher<Stmt, UnaryExprOrTypeTraitExpr>
790     unaryExprOrTypeTraitExpr;
791 const internal::VariadicDynCastAllOfMatcher<Decl, ValueDecl> valueDecl;
792 const internal::VariadicDynCastAllOfMatcher<Decl, CXXConstructorDecl>
793     cxxConstructorDecl;
794 const internal::VariadicDynCastAllOfMatcher<Decl, CXXDestructorDecl>
795     cxxDestructorDecl;
796 const internal::VariadicDynCastAllOfMatcher<Decl, EnumDecl> enumDecl;
797 const internal::VariadicDynCastAllOfMatcher<Decl, EnumConstantDecl>
798     enumConstantDecl;
799 const internal::VariadicDynCastAllOfMatcher<Decl, TagDecl> tagDecl;
800 const internal::VariadicDynCastAllOfMatcher<Decl, CXXMethodDecl> cxxMethodDecl;
801 const internal::VariadicDynCastAllOfMatcher<Decl, CXXConversionDecl>
802     cxxConversionDecl;
803 const internal::VariadicDynCastAllOfMatcher<Decl, ConceptDecl> conceptDecl;
804 const internal::VariadicDynCastAllOfMatcher<Decl, VarDecl> varDecl;
805 const internal::VariadicDynCastAllOfMatcher<Decl, FieldDecl> fieldDecl;
806 const internal::VariadicDynCastAllOfMatcher<Decl, IndirectFieldDecl>
807     indirectFieldDecl;
808 const internal::VariadicDynCastAllOfMatcher<Decl, FunctionDecl> functionDecl;
809 const internal::VariadicDynCastAllOfMatcher<Decl, FunctionTemplateDecl>
810     functionTemplateDecl;
811 const internal::VariadicDynCastAllOfMatcher<Decl, FriendDecl> friendDecl;
812 const internal::VariadicAllOfMatcher<Stmt> stmt;
813 const internal::VariadicDynCastAllOfMatcher<Stmt, DeclStmt> declStmt;
814 const internal::VariadicDynCastAllOfMatcher<Stmt, MemberExpr> memberExpr;
815 const internal::VariadicDynCastAllOfMatcher<Stmt, UnresolvedMemberExpr>
816     unresolvedMemberExpr;
817 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDependentScopeMemberExpr>
818     cxxDependentScopeMemberExpr;
819 const internal::VariadicDynCastAllOfMatcher<Stmt, CallExpr> callExpr;
820 const internal::VariadicDynCastAllOfMatcher<Stmt, LambdaExpr> lambdaExpr;
821 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXMemberCallExpr>
822     cxxMemberCallExpr;
823 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCMessageExpr>
824     objcMessageExpr;
825 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCInterfaceDecl>
826     objcInterfaceDecl;
827 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCImplementationDecl>
828     objcImplementationDecl;
829 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCProtocolDecl>
830     objcProtocolDecl;
831 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCCategoryDecl>
832     objcCategoryDecl;
833 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCCategoryImplDecl>
834     objcCategoryImplDecl;
835 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCMethodDecl>
836     objcMethodDecl;
837 const internal::VariadicDynCastAllOfMatcher<Decl, BlockDecl>
838     blockDecl;
839 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCIvarDecl> objcIvarDecl;
840 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCPropertyDecl>
841     objcPropertyDecl;
842 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtThrowStmt>
843     objcThrowStmt;
844 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtTryStmt> objcTryStmt;
845 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtCatchStmt>
846     objcCatchStmt;
847 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtFinallyStmt>
848     objcFinallyStmt;
849 const internal::VariadicDynCastAllOfMatcher<Stmt, ExprWithCleanups>
850     exprWithCleanups;
851 const internal::VariadicDynCastAllOfMatcher<Stmt, InitListExpr> initListExpr;
852 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXStdInitializerListExpr>
853     cxxStdInitializerListExpr;
854 const internal::VariadicDynCastAllOfMatcher<Stmt, ImplicitValueInitExpr>
855     implicitValueInitExpr;
856 const internal::VariadicDynCastAllOfMatcher<Stmt, ParenListExpr> parenListExpr;
857 const internal::VariadicDynCastAllOfMatcher<Stmt, SubstNonTypeTemplateParmExpr>
858     substNonTypeTemplateParmExpr;
859 const internal::VariadicDynCastAllOfMatcher<Decl, UsingDecl> usingDecl;
860 const internal::VariadicDynCastAllOfMatcher<Decl, UsingEnumDecl> usingEnumDecl;
861 const internal::VariadicDynCastAllOfMatcher<Decl, UsingDirectiveDecl>
862     usingDirectiveDecl;
863 const internal::VariadicDynCastAllOfMatcher<Stmt, UnresolvedLookupExpr>
864     unresolvedLookupExpr;
865 const internal::VariadicDynCastAllOfMatcher<Decl, UnresolvedUsingValueDecl>
866     unresolvedUsingValueDecl;
867 const internal::VariadicDynCastAllOfMatcher<Decl, UnresolvedUsingTypenameDecl>
868     unresolvedUsingTypenameDecl;
869 const internal::VariadicDynCastAllOfMatcher<Stmt, ConstantExpr> constantExpr;
870 const internal::VariadicDynCastAllOfMatcher<Stmt, ParenExpr> parenExpr;
871 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXConstructExpr>
872     cxxConstructExpr;
873 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXUnresolvedConstructExpr>
874     cxxUnresolvedConstructExpr;
875 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXThisExpr> cxxThisExpr;
876 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXBindTemporaryExpr>
877     cxxBindTemporaryExpr;
878 const internal::VariadicDynCastAllOfMatcher<Stmt, MaterializeTemporaryExpr>
879     materializeTemporaryExpr;
880 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXNewExpr> cxxNewExpr;
881 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDeleteExpr> cxxDeleteExpr;
882 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXNoexceptExpr>
883     cxxNoexceptExpr;
884 const internal::VariadicDynCastAllOfMatcher<Stmt, ArraySubscriptExpr>
885     arraySubscriptExpr;
886 const internal::VariadicDynCastAllOfMatcher<Stmt, ArrayInitIndexExpr>
887     arrayInitIndexExpr;
888 const internal::VariadicDynCastAllOfMatcher<Stmt, ArrayInitLoopExpr>
889     arrayInitLoopExpr;
890 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDefaultArgExpr>
891     cxxDefaultArgExpr;
892 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXOperatorCallExpr>
893     cxxOperatorCallExpr;
894 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXRewrittenBinaryOperator>
895     cxxRewrittenBinaryOperator;
896 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXFoldExpr> cxxFoldExpr;
897 const internal::VariadicDynCastAllOfMatcher<Stmt, Expr> expr;
898 const internal::VariadicDynCastAllOfMatcher<Stmt, DeclRefExpr> declRefExpr;
899 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCIvarRefExpr> objcIvarRefExpr;
900 const internal::VariadicDynCastAllOfMatcher<Stmt, BlockExpr> blockExpr;
901 const internal::VariadicDynCastAllOfMatcher<Stmt, IfStmt> ifStmt;
902 const internal::VariadicDynCastAllOfMatcher<Stmt, ForStmt> forStmt;
903 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXForRangeStmt>
904     cxxForRangeStmt;
905 const internal::VariadicDynCastAllOfMatcher<Stmt, WhileStmt> whileStmt;
906 const internal::VariadicDynCastAllOfMatcher<Stmt, DoStmt> doStmt;
907 const internal::VariadicDynCastAllOfMatcher<Stmt, BreakStmt> breakStmt;
908 const internal::VariadicDynCastAllOfMatcher<Stmt, ContinueStmt> continueStmt;
909 const internal::VariadicDynCastAllOfMatcher<Stmt, CoreturnStmt> coreturnStmt;
910 const internal::VariadicDynCastAllOfMatcher<Stmt, ReturnStmt> returnStmt;
911 const internal::VariadicDynCastAllOfMatcher<Stmt, GotoStmt> gotoStmt;
912 const internal::VariadicDynCastAllOfMatcher<Stmt, LabelStmt> labelStmt;
913 const internal::VariadicDynCastAllOfMatcher<Stmt, AddrLabelExpr> addrLabelExpr;
914 const internal::VariadicDynCastAllOfMatcher<Stmt, SwitchStmt> switchStmt;
915 const internal::VariadicDynCastAllOfMatcher<Stmt, SwitchCase> switchCase;
916 const internal::VariadicDynCastAllOfMatcher<Stmt, CaseStmt> caseStmt;
917 const internal::VariadicDynCastAllOfMatcher<Stmt, DefaultStmt> defaultStmt;
918 const internal::VariadicDynCastAllOfMatcher<Stmt, CompoundStmt> compoundStmt;
919 const internal::VariadicDynCastAllOfMatcher<Stmt, CoroutineBodyStmt>
920     coroutineBodyStmt;
921 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXCatchStmt> cxxCatchStmt;
922 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXTryStmt> cxxTryStmt;
923 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXThrowExpr> cxxThrowExpr;
924 const internal::VariadicDynCastAllOfMatcher<Stmt, NullStmt> nullStmt;
925 const internal::VariadicDynCastAllOfMatcher<Stmt, AsmStmt> asmStmt;
926 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXBoolLiteralExpr>
927     cxxBoolLiteral;
928 const internal::VariadicDynCastAllOfMatcher<Stmt, StringLiteral> stringLiteral;
929 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCStringLiteral> objcStringLiteral;
930 const internal::VariadicDynCastAllOfMatcher<Stmt, CharacterLiteral>
931     characterLiteral;
932 const internal::VariadicDynCastAllOfMatcher<Stmt, IntegerLiteral>
933     integerLiteral;
934 const internal::VariadicDynCastAllOfMatcher<Stmt, FloatingLiteral> floatLiteral;
935 const internal::VariadicDynCastAllOfMatcher<Stmt, ImaginaryLiteral> imaginaryLiteral;
936 const internal::VariadicDynCastAllOfMatcher<Stmt, FixedPointLiteral>
937     fixedPointLiteral;
938 const internal::VariadicDynCastAllOfMatcher<Stmt, UserDefinedLiteral>
939     userDefinedLiteral;
940 const internal::VariadicDynCastAllOfMatcher<Stmt, CompoundLiteralExpr>
941     compoundLiteralExpr;
942 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXNullPtrLiteralExpr>
943     cxxNullPtrLiteralExpr;
944 const internal::VariadicDynCastAllOfMatcher<Stmt, ChooseExpr> chooseExpr;
945 const internal::VariadicDynCastAllOfMatcher<Stmt, ConvertVectorExpr>
946     convertVectorExpr;
947 const internal::VariadicDynCastAllOfMatcher<Stmt, CoawaitExpr>
948     coawaitExpr;
949 const internal::VariadicDynCastAllOfMatcher<Stmt, DependentCoawaitExpr>
950     dependentCoawaitExpr;
951 const internal::VariadicDynCastAllOfMatcher<Stmt, CoyieldExpr>
952     coyieldExpr;
953 const internal::VariadicDynCastAllOfMatcher<Stmt, GNUNullExpr> gnuNullExpr;
954 const internal::VariadicDynCastAllOfMatcher<Stmt, GenericSelectionExpr>
955     genericSelectionExpr;
956 const internal::VariadicDynCastAllOfMatcher<Stmt, AtomicExpr> atomicExpr;
957 const internal::VariadicDynCastAllOfMatcher<Stmt, StmtExpr> stmtExpr;
958 const internal::VariadicDynCastAllOfMatcher<Stmt, BinaryOperator>
959     binaryOperator;
960 const internal::MapAnyOfMatcher<BinaryOperator, CXXOperatorCallExpr,
961                                 CXXRewrittenBinaryOperator>
962     binaryOperation;
963 const internal::MapAnyOfMatcher<CallExpr, CXXConstructExpr> invocation;
964 const internal::VariadicDynCastAllOfMatcher<Stmt, UnaryOperator> unaryOperator;
965 const internal::VariadicDynCastAllOfMatcher<Stmt, ConditionalOperator>
966     conditionalOperator;
967 const internal::VariadicDynCastAllOfMatcher<Stmt, BinaryConditionalOperator>
968     binaryConditionalOperator;
969 const internal::VariadicDynCastAllOfMatcher<Stmt, OpaqueValueExpr>
970     opaqueValueExpr;
971 const internal::VariadicDynCastAllOfMatcher<Decl, StaticAssertDecl>
972     staticAssertDecl;
973 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXReinterpretCastExpr>
974     cxxReinterpretCastExpr;
975 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXStaticCastExpr>
976     cxxStaticCastExpr;
977 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDynamicCastExpr>
978     cxxDynamicCastExpr;
979 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXConstCastExpr>
980     cxxConstCastExpr;
981 const internal::VariadicDynCastAllOfMatcher<Stmt, CStyleCastExpr>
982     cStyleCastExpr;
983 const internal::VariadicDynCastAllOfMatcher<Stmt, ExplicitCastExpr>
984     explicitCastExpr;
985 const internal::VariadicDynCastAllOfMatcher<Stmt, ImplicitCastExpr>
986     implicitCastExpr;
987 const internal::VariadicDynCastAllOfMatcher<Stmt, CastExpr> castExpr;
988 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXFunctionalCastExpr>
989     cxxFunctionalCastExpr;
990 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXTemporaryObjectExpr>
991     cxxTemporaryObjectExpr;
992 const internal::VariadicDynCastAllOfMatcher<Stmt, PredefinedExpr>
993     predefinedExpr;
994 const internal::VariadicDynCastAllOfMatcher<Stmt, DesignatedInitExpr>
995     designatedInitExpr;
996 const internal::VariadicOperatorMatcherFunc<
997     2, std::numeric_limits<unsigned>::max()>
998     eachOf = {internal::DynTypedMatcher::VO_EachOf};
999 const internal::VariadicOperatorMatcherFunc<
1000     2, std::numeric_limits<unsigned>::max()>
1001     anyOf = {internal::DynTypedMatcher::VO_AnyOf};
1002 const internal::VariadicOperatorMatcherFunc<
1003     2, std::numeric_limits<unsigned>::max()>
1004     allOf = {internal::DynTypedMatcher::VO_AllOf};
1005 const internal::VariadicOperatorMatcherFunc<1, 1> optionally = {
1006     internal::DynTypedMatcher::VO_Optionally};
1007 const internal::VariadicFunction<internal::Matcher<NamedDecl>, StringRef,
1008                                  internal::hasAnyNameFunc>
1009     hasAnyName = {};
1010 
1011 const internal::VariadicFunction<internal::HasOpNameMatcher, StringRef,
1012                                  internal::hasAnyOperatorNameFunc>
1013     hasAnyOperatorName = {};
1014 const internal::VariadicFunction<internal::HasOverloadOpNameMatcher, StringRef,
1015                                  internal::hasAnyOverloadedOperatorNameFunc>
1016     hasAnyOverloadedOperatorName = {};
1017 const internal::VariadicFunction<internal::Matcher<ObjCMessageExpr>, StringRef,
1018                                  internal::hasAnySelectorFunc>
1019     hasAnySelector = {};
1020 const internal::ArgumentAdaptingMatcherFunc<internal::HasMatcher> has = {};
1021 const internal::ArgumentAdaptingMatcherFunc<internal::HasDescendantMatcher>
1022     hasDescendant = {};
1023 const internal::ArgumentAdaptingMatcherFunc<internal::ForEachMatcher> forEach =
1024     {};
1025 const internal::ArgumentAdaptingMatcherFunc<internal::ForEachDescendantMatcher>
1026     forEachDescendant = {};
1027 const internal::ArgumentAdaptingMatcherFunc<
1028     internal::HasParentMatcher,
1029     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc, Attr>,
1030     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc, Attr>>
1031     hasParent = {};
1032 const internal::ArgumentAdaptingMatcherFunc<
1033     internal::HasAncestorMatcher,
1034     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc, Attr>,
1035     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc, Attr>>
1036     hasAncestor = {};
1037 const internal::VariadicOperatorMatcherFunc<1, 1> unless = {
1038     internal::DynTypedMatcher::VO_UnaryNot};
1039 const internal::VariadicAllOfMatcher<NestedNameSpecifier> nestedNameSpecifier;
1040 const internal::VariadicAllOfMatcher<NestedNameSpecifierLoc>
1041     nestedNameSpecifierLoc;
1042 const internal::VariadicAllOfMatcher<Attr> attr;
1043 const internal::VariadicDynCastAllOfMatcher<Stmt, CUDAKernelCallExpr>
1044     cudaKernelCallExpr;
1045 const AstTypeMatcher<BuiltinType> builtinType;
1046 const AstTypeMatcher<ArrayType> arrayType;
1047 const AstTypeMatcher<ComplexType> complexType;
1048 const AstTypeMatcher<ConstantArrayType> constantArrayType;
1049 const AstTypeMatcher<DeducedTemplateSpecializationType>
1050     deducedTemplateSpecializationType;
1051 const AstTypeMatcher<DependentSizedArrayType> dependentSizedArrayType;
1052 const AstTypeMatcher<DependentSizedExtVectorType> dependentSizedExtVectorType;
1053 const AstTypeMatcher<IncompleteArrayType> incompleteArrayType;
1054 const AstTypeMatcher<VariableArrayType> variableArrayType;
1055 const AstTypeMatcher<AtomicType> atomicType;
1056 const AstTypeMatcher<AutoType> autoType;
1057 const AstTypeMatcher<DecltypeType> decltypeType;
1058 const AstTypeMatcher<FunctionType> functionType;
1059 const AstTypeMatcher<FunctionProtoType> functionProtoType;
1060 const AstTypeMatcher<ParenType> parenType;
1061 const AstTypeMatcher<BlockPointerType> blockPointerType;
1062 const AstTypeMatcher<MacroQualifiedType> macroQualifiedType;
1063 const AstTypeMatcher<MemberPointerType> memberPointerType;
1064 const AstTypeMatcher<PointerType> pointerType;
1065 const AstTypeMatcher<ObjCObjectPointerType> objcObjectPointerType;
1066 const AstTypeMatcher<ReferenceType> referenceType;
1067 const AstTypeMatcher<LValueReferenceType> lValueReferenceType;
1068 const AstTypeMatcher<RValueReferenceType> rValueReferenceType;
1069 const AstTypeMatcher<TypedefType> typedefType;
1070 const AstTypeMatcher<EnumType> enumType;
1071 const AstTypeMatcher<TemplateSpecializationType> templateSpecializationType;
1072 const AstTypeMatcher<UnaryTransformType> unaryTransformType;
1073 const AstTypeMatcher<RecordType> recordType;
1074 const AstTypeMatcher<TagType> tagType;
1075 const AstTypeMatcher<ElaboratedType> elaboratedType;
1076 const AstTypeMatcher<UsingType> usingType;
1077 const AstTypeMatcher<SubstTemplateTypeParmType> substTemplateTypeParmType;
1078 const AstTypeMatcher<TemplateTypeParmType> templateTypeParmType;
1079 const AstTypeMatcher<InjectedClassNameType> injectedClassNameType;
1080 const AstTypeMatcher<DecayedType> decayedType;
1081 AST_TYPELOC_TRAVERSE_MATCHER_DEF(hasElementType,
1082                                  AST_POLYMORPHIC_SUPPORTED_TYPES(ArrayType,
1083                                                                  ComplexType));
1084 AST_TYPELOC_TRAVERSE_MATCHER_DEF(hasValueType,
1085                                  AST_POLYMORPHIC_SUPPORTED_TYPES(AtomicType));
1086 AST_TYPELOC_TRAVERSE_MATCHER_DEF(
1087     pointee,
1088     AST_POLYMORPHIC_SUPPORTED_TYPES(BlockPointerType, MemberPointerType,
1089                                     PointerType, ReferenceType));
1090 
1091 const internal::VariadicDynCastAllOfMatcher<Stmt, OMPExecutableDirective>
1092     ompExecutableDirective;
1093 const internal::VariadicDynCastAllOfMatcher<OMPClause, OMPDefaultClause>
1094     ompDefaultClause;
1095 const internal::VariadicDynCastAllOfMatcher<Decl, CXXDeductionGuideDecl>
1096     cxxDeductionGuideDecl;
1097 
1098 } // end namespace ast_matchers
1099 } // end namespace clang
1100