xref: /freebsd/contrib/llvm-project/clang/lib/ASTMatchers/ASTMatchersInternal.cpp (revision b4af4f93c682e445bf159f0d1ec90b636296c946) 
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/PrettyPrinter.h"
19 #include "clang/ASTMatchers/ASTMatchers.h"
20 #include "clang/Basic/LLVM.h"
21 #include "llvm/ADT/ArrayRef.h"
22 #include "llvm/ADT/IntrusiveRefCntPtr.h"
23 #include "llvm/ADT/None.h"
24 #include "llvm/ADT/SmallString.h"
25 #include "llvm/ADT/SmallVector.h"
26 #include "llvm/ADT/StringRef.h"
27 #include "llvm/Support/Casting.h"
28 #include "llvm/Support/ErrorHandling.h"
29 #include "llvm/Support/ManagedStatic.h"
30 #include "llvm/Support/raw_ostream.h"
31 #include <algorithm>
32 #include <cassert>
33 #include <cstddef>
34 #include <string>
35 #include <utility>
36 #include <vector>
37 
38 namespace clang {
39 namespace ast_matchers {
40 
41 AST_MATCHER_P(ObjCMessageExpr, hasAnySelectorMatcher, std::vector<std::string>,
42               Matches) {
43   std::string SelString = Node.getSelector().getAsString();
44   for (const std::string &S : Matches)
45     if (S == SelString)
46       return true;
47   return false;
48 }
49 
50 namespace internal {
51 
52 bool NotUnaryOperator(const ast_type_traits::DynTypedNode &DynNode,
53                       ASTMatchFinder *Finder, BoundNodesTreeBuilder *Builder,
54                       ArrayRef<DynTypedMatcher> InnerMatchers);
55 
56 bool AllOfVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
57                            ASTMatchFinder *Finder,
58                            BoundNodesTreeBuilder *Builder,
59                            ArrayRef<DynTypedMatcher> InnerMatchers);
60 
61 bool EachOfVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
62                             ASTMatchFinder *Finder,
63                             BoundNodesTreeBuilder *Builder,
64                             ArrayRef<DynTypedMatcher> InnerMatchers);
65 
66 bool AnyOfVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
67                            ASTMatchFinder *Finder,
68                            BoundNodesTreeBuilder *Builder,
69                            ArrayRef<DynTypedMatcher> InnerMatchers);
70 
71 bool OptionallyVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
72                                 ASTMatchFinder *Finder,
73                                 BoundNodesTreeBuilder *Builder,
74                                 ArrayRef<DynTypedMatcher> InnerMatchers);
75 
76 void BoundNodesTreeBuilder::visitMatches(Visitor *ResultVisitor) {
77   if (Bindings.empty())
78     Bindings.push_back(BoundNodesMap());
79   for (BoundNodesMap &Binding : Bindings) {
80     ResultVisitor->visitMatch(BoundNodes(Binding));
81   }
82 }
83 
84 namespace {
85 
86 using VariadicOperatorFunction = bool (*)(
87     const ast_type_traits::DynTypedNode &DynNode, ASTMatchFinder *Finder,
88     BoundNodesTreeBuilder *Builder, ArrayRef<DynTypedMatcher> InnerMatchers);
89 
90 template <VariadicOperatorFunction Func>
91 class VariadicMatcher : public DynMatcherInterface {
92 public:
93   VariadicMatcher(std::vector<DynTypedMatcher> InnerMatchers)
94       : InnerMatchers(std::move(InnerMatchers)) {}
95 
96   bool dynMatches(const ast_type_traits::DynTypedNode &DynNode,
97                   ASTMatchFinder *Finder,
98                   BoundNodesTreeBuilder *Builder) const override {
99     return Func(DynNode, Finder, Builder, InnerMatchers);
100   }
101 
102 private:
103   std::vector<DynTypedMatcher> InnerMatchers;
104 };
105 
106 class IdDynMatcher : public DynMatcherInterface {
107 public:
108   IdDynMatcher(StringRef ID,
109                IntrusiveRefCntPtr<DynMatcherInterface> InnerMatcher)
110       : ID(ID), InnerMatcher(std::move(InnerMatcher)) {}
111 
112   bool dynMatches(const ast_type_traits::DynTypedNode &DynNode,
113                   ASTMatchFinder *Finder,
114                   BoundNodesTreeBuilder *Builder) const override {
115     bool Result = InnerMatcher->dynMatches(DynNode, Finder, Builder);
116     if (Result) Builder->setBinding(ID, DynNode);
117     return Result;
118   }
119 
120   llvm::Optional<ast_type_traits::TraversalKind>
121   TraversalKind() const override {
122     return InnerMatcher->TraversalKind();
123   }
124 
125 private:
126   const std::string ID;
127   const IntrusiveRefCntPtr<DynMatcherInterface> InnerMatcher;
128 };
129 
130 /// A matcher that always returns true.
131 ///
132 /// We only ever need one instance of this matcher, so we create a global one
133 /// and reuse it to reduce the overhead of the matcher and increase the chance
134 /// of cache hits.
135 class TrueMatcherImpl : public DynMatcherInterface {
136 public:
137   TrueMatcherImpl() {
138     Retain(); // Reference count will never become zero.
139   }
140 
141   bool dynMatches(const ast_type_traits::DynTypedNode &, ASTMatchFinder *,
142                   BoundNodesTreeBuilder *) const override {
143     return true;
144   }
145 };
146 
147 } // namespace
148 
149 static llvm::ManagedStatic<TrueMatcherImpl> TrueMatcherInstance;
150 
151 DynTypedMatcher DynTypedMatcher::constructVariadic(
152     DynTypedMatcher::VariadicOperator Op,
153     ast_type_traits::ASTNodeKind SupportedKind,
154     std::vector<DynTypedMatcher> InnerMatchers) {
155   assert(!InnerMatchers.empty() && "Array must not be empty.");
156   assert(llvm::all_of(InnerMatchers,
157                       [SupportedKind](const DynTypedMatcher &M) {
158                         return M.canConvertTo(SupportedKind);
159                       }) &&
160          "InnerMatchers must be convertible to SupportedKind!");
161 
162   // We must relax the restrict kind here.
163   // The different operators might deal differently with a mismatch.
164   // Make it the same as SupportedKind, since that is the broadest type we are
165   // allowed to accept.
166   auto RestrictKind = SupportedKind;
167 
168   switch (Op) {
169   case VO_AllOf:
170     // In the case of allOf() we must pass all the checks, so making
171     // RestrictKind the most restrictive can save us time. This way we reject
172     // invalid types earlier and we can elide the kind checks inside the
173     // matcher.
174     for (auto &IM : InnerMatchers) {
175       RestrictKind = ast_type_traits::ASTNodeKind::getMostDerivedType(
176           RestrictKind, IM.RestrictKind);
177     }
178     return DynTypedMatcher(
179         SupportedKind, RestrictKind,
180         new VariadicMatcher<AllOfVariadicOperator>(std::move(InnerMatchers)));
181 
182   case VO_AnyOf:
183     return DynTypedMatcher(
184         SupportedKind, RestrictKind,
185         new VariadicMatcher<AnyOfVariadicOperator>(std::move(InnerMatchers)));
186 
187   case VO_EachOf:
188     return DynTypedMatcher(
189         SupportedKind, RestrictKind,
190         new VariadicMatcher<EachOfVariadicOperator>(std::move(InnerMatchers)));
191 
192   case VO_Optionally:
193     return DynTypedMatcher(SupportedKind, RestrictKind,
194                            new VariadicMatcher<OptionallyVariadicOperator>(
195                                std::move(InnerMatchers)));
196 
197   case VO_UnaryNot:
198     // FIXME: Implement the Not operator to take a single matcher instead of a
199     // vector.
200     return DynTypedMatcher(
201         SupportedKind, RestrictKind,
202         new VariadicMatcher<NotUnaryOperator>(std::move(InnerMatchers)));
203   }
204   llvm_unreachable("Invalid Op value.");
205 }
206 
207 DynTypedMatcher DynTypedMatcher::constructRestrictedWrapper(
208     const DynTypedMatcher &InnerMatcher,
209     ast_type_traits::ASTNodeKind RestrictKind) {
210   DynTypedMatcher Copy = InnerMatcher;
211   Copy.RestrictKind = RestrictKind;
212   return Copy;
213 }
214 
215 DynTypedMatcher DynTypedMatcher::trueMatcher(
216     ast_type_traits::ASTNodeKind NodeKind) {
217   return DynTypedMatcher(NodeKind, NodeKind, &*TrueMatcherInstance);
218 }
219 
220 bool DynTypedMatcher::canMatchNodesOfKind(
221     ast_type_traits::ASTNodeKind Kind) const {
222   return RestrictKind.isBaseOf(Kind);
223 }
224 
225 DynTypedMatcher DynTypedMatcher::dynCastTo(
226     const ast_type_traits::ASTNodeKind Kind) const {
227   auto Copy = *this;
228   Copy.SupportedKind = Kind;
229   Copy.RestrictKind =
230       ast_type_traits::ASTNodeKind::getMostDerivedType(Kind, RestrictKind);
231   return Copy;
232 }
233 
234 bool DynTypedMatcher::matches(const ast_type_traits::DynTypedNode &DynNode,
235                               ASTMatchFinder *Finder,
236                               BoundNodesTreeBuilder *Builder) const {
237   TraversalKindScope RAII(Finder->getASTContext(),
238                           Implementation->TraversalKind());
239 
240   auto N = Finder->getASTContext().traverseIgnored(DynNode);
241 
242   if (RestrictKind.isBaseOf(N.getNodeKind()) &&
243       Implementation->dynMatches(N, Finder, Builder)) {
244     return true;
245   }
246   // Delete all bindings when a matcher does not match.
247   // This prevents unexpected exposure of bound nodes in unmatches
248   // branches of the match tree.
249   Builder->removeBindings([](const BoundNodesMap &) { return true; });
250   return false;
251 }
252 
253 bool DynTypedMatcher::matchesNoKindCheck(
254     const ast_type_traits::DynTypedNode &DynNode, ASTMatchFinder *Finder,
255     BoundNodesTreeBuilder *Builder) const {
256   TraversalKindScope raii(Finder->getASTContext(),
257                           Implementation->TraversalKind());
258 
259   auto N = Finder->getASTContext().traverseIgnored(DynNode);
260 
261   assert(RestrictKind.isBaseOf(N.getNodeKind()));
262   if (Implementation->dynMatches(N, Finder, Builder)) {
263     return true;
264   }
265   // Delete all bindings when a matcher does not match.
266   // This prevents unexpected exposure of bound nodes in unmatches
267   // branches of the match tree.
268   Builder->removeBindings([](const BoundNodesMap &) { return true; });
269   return false;
270 }
271 
272 llvm::Optional<DynTypedMatcher> DynTypedMatcher::tryBind(StringRef ID) const {
273   if (!AllowBind) return llvm::None;
274   auto Result = *this;
275   Result.Implementation =
276       new IdDynMatcher(ID, std::move(Result.Implementation));
277   return std::move(Result);
278 }
279 
280 bool DynTypedMatcher::canConvertTo(ast_type_traits::ASTNodeKind To) const {
281   const auto From = getSupportedKind();
282   auto QualKind = ast_type_traits::ASTNodeKind::getFromNodeKind<QualType>();
283   auto TypeKind = ast_type_traits::ASTNodeKind::getFromNodeKind<Type>();
284   /// Mimic the implicit conversions of Matcher<>.
285   /// - From Matcher<Type> to Matcher<QualType>
286   if (From.isSame(TypeKind) && To.isSame(QualKind)) return true;
287   /// - From Matcher<Base> to Matcher<Derived>
288   return From.isBaseOf(To);
289 }
290 
291 void BoundNodesTreeBuilder::addMatch(const BoundNodesTreeBuilder &Other) {
292   Bindings.append(Other.Bindings.begin(), Other.Bindings.end());
293 }
294 
295 bool NotUnaryOperator(const ast_type_traits::DynTypedNode &DynNode,
296                       ASTMatchFinder *Finder, BoundNodesTreeBuilder *Builder,
297                       ArrayRef<DynTypedMatcher> InnerMatchers) {
298   if (InnerMatchers.size() != 1)
299     return false;
300 
301   // The 'unless' matcher will always discard the result:
302   // If the inner matcher doesn't match, unless returns true,
303   // but the inner matcher cannot have bound anything.
304   // If the inner matcher matches, the result is false, and
305   // any possible binding will be discarded.
306   // We still need to hand in all the bound nodes up to this
307   // point so the inner matcher can depend on bound nodes,
308   // and we need to actively discard the bound nodes, otherwise
309   // the inner matcher will reset the bound nodes if it doesn't
310   // match, but this would be inversed by 'unless'.
311   BoundNodesTreeBuilder Discard(*Builder);
312   return !InnerMatchers[0].matches(DynNode, Finder, &Discard);
313 }
314 
315 bool AllOfVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
316                            ASTMatchFinder *Finder,
317                            BoundNodesTreeBuilder *Builder,
318                            ArrayRef<DynTypedMatcher> InnerMatchers) {
319   // allOf leads to one matcher for each alternative in the first
320   // matcher combined with each alternative in the second matcher.
321   // Thus, we can reuse the same Builder.
322   for (const DynTypedMatcher &InnerMatcher : InnerMatchers) {
323     if (!InnerMatcher.matchesNoKindCheck(DynNode, Finder, Builder))
324       return false;
325   }
326   return true;
327 }
328 
329 bool EachOfVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
330                             ASTMatchFinder *Finder,
331                             BoundNodesTreeBuilder *Builder,
332                             ArrayRef<DynTypedMatcher> InnerMatchers) {
333   BoundNodesTreeBuilder Result;
334   bool Matched = false;
335   for (const DynTypedMatcher &InnerMatcher : InnerMatchers) {
336     BoundNodesTreeBuilder BuilderInner(*Builder);
337     if (InnerMatcher.matches(DynNode, Finder, &BuilderInner)) {
338       Matched = true;
339       Result.addMatch(BuilderInner);
340     }
341   }
342   *Builder = std::move(Result);
343   return Matched;
344 }
345 
346 bool AnyOfVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
347                            ASTMatchFinder *Finder,
348                            BoundNodesTreeBuilder *Builder,
349                            ArrayRef<DynTypedMatcher> InnerMatchers) {
350   for (const DynTypedMatcher &InnerMatcher : InnerMatchers) {
351     BoundNodesTreeBuilder Result = *Builder;
352     if (InnerMatcher.matches(DynNode, Finder, &Result)) {
353       *Builder = std::move(Result);
354       return true;
355     }
356   }
357   return false;
358 }
359 
360 bool OptionallyVariadicOperator(const ast_type_traits::DynTypedNode &DynNode,
361                                 ASTMatchFinder *Finder,
362                                 BoundNodesTreeBuilder *Builder,
363                                 ArrayRef<DynTypedMatcher> InnerMatchers) {
364   BoundNodesTreeBuilder Result;
365   for (const DynTypedMatcher &InnerMatcher : InnerMatchers) {
366     BoundNodesTreeBuilder BuilderInner(*Builder);
367     if (InnerMatcher.matches(DynNode, Finder, &BuilderInner))
368       Result.addMatch(BuilderInner);
369   }
370   *Builder = std::move(Result);
371   return true;
372 }
373 
374 inline static
375 std::vector<std::string> vectorFromRefs(ArrayRef<const StringRef *> NameRefs) {
376   std::vector<std::string> Names;
377   for (auto *Name : NameRefs)
378     Names.emplace_back(*Name);
379   return Names;
380 }
381 
382 Matcher<NamedDecl> hasAnyNameFunc(ArrayRef<const StringRef *> NameRefs) {
383   std::vector<std::string> Names = vectorFromRefs(NameRefs);
384   return internal::Matcher<NamedDecl>(new internal::HasNameMatcher(Names));
385 }
386 
387 Matcher<ObjCMessageExpr> hasAnySelectorFunc(
388     ArrayRef<const StringRef *> NameRefs) {
389   return hasAnySelectorMatcher(vectorFromRefs(NameRefs));
390 }
391 
392 HasNameMatcher::HasNameMatcher(std::vector<std::string> N)
393     : UseUnqualifiedMatch(std::all_of(
394           N.begin(), N.end(),
395           [](StringRef Name) { return Name.find("::") == Name.npos; })),
396       Names(std::move(N)) {
397 #ifndef NDEBUG
398   for (StringRef Name : Names)
399     assert(!Name.empty());
400 #endif
401 }
402 
403 static bool consumeNameSuffix(StringRef &FullName, StringRef Suffix) {
404   StringRef Name = FullName;
405   if (!Name.endswith(Suffix))
406     return false;
407   Name = Name.drop_back(Suffix.size());
408   if (!Name.empty()) {
409     if (!Name.endswith("::"))
410       return false;
411     Name = Name.drop_back(2);
412   }
413   FullName = Name;
414   return true;
415 }
416 
417 static StringRef getNodeName(const NamedDecl &Node,
418                              llvm::SmallString<128> &Scratch) {
419   // Simple name.
420   if (Node.getIdentifier())
421     return Node.getName();
422 
423   if (Node.getDeclName()) {
424     // Name needs to be constructed.
425     Scratch.clear();
426     llvm::raw_svector_ostream OS(Scratch);
427     Node.printName(OS);
428     return OS.str();
429   }
430 
431   return "(anonymous)";
432 }
433 
434 static StringRef getNodeName(const RecordDecl &Node,
435                              llvm::SmallString<128> &Scratch) {
436   if (Node.getIdentifier()) {
437     return Node.getName();
438   }
439   Scratch.clear();
440   return ("(anonymous " + Node.getKindName() + ")").toStringRef(Scratch);
441 }
442 
443 static StringRef getNodeName(const NamespaceDecl &Node,
444                              llvm::SmallString<128> &Scratch) {
445   return Node.isAnonymousNamespace() ? "(anonymous namespace)" : Node.getName();
446 }
447 
448 namespace {
449 
450 class PatternSet {
451 public:
452   PatternSet(ArrayRef<std::string> Names) {
453     for (StringRef Name : Names)
454       Patterns.push_back({Name, Name.startswith("::")});
455   }
456 
457   /// Consumes the name suffix from each pattern in the set and removes the ones
458   /// that didn't match.
459   /// Return true if there are still any patterns left.
460   bool consumeNameSuffix(StringRef NodeName, bool CanSkip) {
461     for (size_t I = 0; I < Patterns.size();) {
462       if (::clang::ast_matchers::internal::consumeNameSuffix(Patterns[I].P,
463                                                              NodeName) ||
464           CanSkip) {
465         ++I;
466       } else {
467         Patterns.erase(Patterns.begin() + I);
468       }
469     }
470     return !Patterns.empty();
471   }
472 
473   /// Check if any of the patterns are a match.
474   /// A match will be a pattern that was fully consumed, that also matches the
475   /// 'fully qualified' requirement.
476   bool foundMatch(bool AllowFullyQualified) const {
477     for (auto& P: Patterns)
478       if (P.P.empty() && (AllowFullyQualified || !P.IsFullyQualified))
479         return true;
480     return false;
481   }
482 
483 private:
484   struct Pattern {
485     StringRef P;
486     bool IsFullyQualified;
487   };
488 
489   llvm::SmallVector<Pattern, 8> Patterns;
490 };
491 
492 } // namespace
493 
494 bool HasNameMatcher::matchesNodeUnqualified(const NamedDecl &Node) const {
495   assert(UseUnqualifiedMatch);
496   llvm::SmallString<128> Scratch;
497   StringRef NodeName = getNodeName(Node, Scratch);
498   return llvm::any_of(Names, [&](StringRef Name) {
499     return consumeNameSuffix(Name, NodeName) && Name.empty();
500   });
501 }
502 
503 bool HasNameMatcher::matchesNodeFullFast(const NamedDecl &Node) const {
504   PatternSet Patterns(Names);
505   llvm::SmallString<128> Scratch;
506 
507   // This function is copied and adapted from NamedDecl::printQualifiedName()
508   // By matching each part individually we optimize in a couple of ways:
509   //  - We can exit early on the first failure.
510   //  - We can skip inline/anonymous namespaces without another pass.
511   //  - We print one name at a time, reducing the chance of overflowing the
512   //    inlined space of the SmallString.
513 
514   // First, match the name.
515   if (!Patterns.consumeNameSuffix(getNodeName(Node, Scratch),
516                                   /*CanSkip=*/false))
517     return false;
518 
519   // Try to match each declaration context.
520   // We are allowed to skip anonymous and inline namespaces if they don't match.
521   const DeclContext *Ctx = Node.getDeclContext();
522 
523   if (Ctx->isFunctionOrMethod())
524     return Patterns.foundMatch(/*AllowFullyQualified=*/false);
525 
526   for (; Ctx; Ctx = Ctx->getParent()) {
527     // Linkage Spec can just be ignored
528     // FIXME: Any other DeclContext kinds that can be safely disregarded
529     if (isa<LinkageSpecDecl>(Ctx))
530       continue;
531     if (!isa<NamedDecl>(Ctx))
532       break;
533     if (Patterns.foundMatch(/*AllowFullyQualified=*/false))
534       return true;
535 
536     if (const auto *ND = dyn_cast<NamespaceDecl>(Ctx)) {
537       // If it matches (or we can skip it), continue.
538       if (Patterns.consumeNameSuffix(getNodeName(*ND, Scratch),
539                                      /*CanSkip=*/ND->isAnonymousNamespace() ||
540                                          ND->isInline()))
541         continue;
542       return false;
543     }
544     if (const auto *RD = dyn_cast<RecordDecl>(Ctx)) {
545       if (!isa<ClassTemplateSpecializationDecl>(Ctx)) {
546         if (Patterns.consumeNameSuffix(getNodeName(*RD, Scratch),
547                                        /*CanSkip=*/false))
548           continue;
549 
550         return false;
551       }
552     }
553 
554     // We don't know how to deal with this DeclContext.
555     // Fallback to the slow version of the code.
556     return matchesNodeFullSlow(Node);
557   }
558 
559   return Patterns.foundMatch(/*AllowFullyQualified=*/true);
560 }
561 
562 bool HasNameMatcher::matchesNodeFullSlow(const NamedDecl &Node) const {
563   const bool SkipUnwrittenCases[] = {false, true};
564   for (bool SkipUnwritten : SkipUnwrittenCases) {
565     llvm::SmallString<128> NodeName = StringRef("::");
566     llvm::raw_svector_ostream OS(NodeName);
567 
568     if (SkipUnwritten) {
569       PrintingPolicy Policy = Node.getASTContext().getPrintingPolicy();
570       Policy.SuppressUnwrittenScope = true;
571       Node.printQualifiedName(OS, Policy);
572     } else {
573       Node.printQualifiedName(OS);
574     }
575 
576     const StringRef FullName = OS.str();
577 
578     for (const StringRef Pattern : Names) {
579       if (Pattern.startswith("::")) {
580         if (FullName == Pattern)
581           return true;
582       } else if (FullName.endswith(Pattern) &&
583                  FullName.drop_back(Pattern.size()).endswith("::")) {
584         return true;
585       }
586     }
587   }
588 
589   return false;
590 }
591 
592 bool HasNameMatcher::matchesNode(const NamedDecl &Node) const {
593   assert(matchesNodeFullFast(Node) == matchesNodeFullSlow(Node));
594   if (UseUnqualifiedMatch) {
595     assert(matchesNodeUnqualified(Node) == matchesNodeFullFast(Node));
596     return matchesNodeUnqualified(Node);
597   }
598   return matchesNodeFullFast(Node);
599 }
600 
601 } // end namespace internal
602 
603 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAutoreleasePoolStmt>
604     autoreleasePoolStmt;
605 const internal::VariadicDynCastAllOfMatcher<Decl, TranslationUnitDecl>
606     translationUnitDecl;
607 const internal::VariadicDynCastAllOfMatcher<Decl, TypedefDecl> typedefDecl;
608 const internal::VariadicDynCastAllOfMatcher<Decl, TypedefNameDecl>
609     typedefNameDecl;
610 const internal::VariadicDynCastAllOfMatcher<Decl, TypeAliasDecl> typeAliasDecl;
611 const internal::VariadicDynCastAllOfMatcher<Decl, TypeAliasTemplateDecl>
612     typeAliasTemplateDecl;
613 const internal::VariadicAllOfMatcher<Decl> decl;
614 const internal::VariadicDynCastAllOfMatcher<Decl, LinkageSpecDecl>
615     linkageSpecDecl;
616 const internal::VariadicDynCastAllOfMatcher<Decl, NamedDecl> namedDecl;
617 const internal::VariadicDynCastAllOfMatcher<Decl, LabelDecl> labelDecl;
618 const internal::VariadicDynCastAllOfMatcher<Decl, NamespaceDecl> namespaceDecl;
619 const internal::VariadicDynCastAllOfMatcher<Decl, NamespaceAliasDecl>
620     namespaceAliasDecl;
621 const internal::VariadicDynCastAllOfMatcher<Decl, RecordDecl> recordDecl;
622 const internal::VariadicDynCastAllOfMatcher<Decl, CXXRecordDecl> cxxRecordDecl;
623 const internal::VariadicDynCastAllOfMatcher<Decl, ClassTemplateDecl>
624     classTemplateDecl;
625 const internal::VariadicDynCastAllOfMatcher<Decl,
626                                             ClassTemplateSpecializationDecl>
627     classTemplateSpecializationDecl;
628 const internal::VariadicDynCastAllOfMatcher<
629     Decl, ClassTemplatePartialSpecializationDecl>
630     classTemplatePartialSpecializationDecl;
631 const internal::VariadicDynCastAllOfMatcher<Decl, DeclaratorDecl>
632     declaratorDecl;
633 const internal::VariadicDynCastAllOfMatcher<Decl, ParmVarDecl> parmVarDecl;
634 const internal::VariadicDynCastAllOfMatcher<Decl, AccessSpecDecl>
635     accessSpecDecl;
636 const internal::VariadicAllOfMatcher<CXXCtorInitializer> cxxCtorInitializer;
637 const internal::VariadicAllOfMatcher<TemplateArgument> templateArgument;
638 const internal::VariadicAllOfMatcher<TemplateName> templateName;
639 const internal::VariadicDynCastAllOfMatcher<Decl, NonTypeTemplateParmDecl>
640     nonTypeTemplateParmDecl;
641 const internal::VariadicDynCastAllOfMatcher<Decl, TemplateTypeParmDecl>
642     templateTypeParmDecl;
643 const internal::VariadicAllOfMatcher<QualType> qualType;
644 const internal::VariadicAllOfMatcher<Type> type;
645 const internal::VariadicAllOfMatcher<TypeLoc> typeLoc;
646 const internal::VariadicDynCastAllOfMatcher<Stmt, UnaryExprOrTypeTraitExpr>
647     unaryExprOrTypeTraitExpr;
648 const internal::VariadicDynCastAllOfMatcher<Decl, ValueDecl> valueDecl;
649 const internal::VariadicDynCastAllOfMatcher<Decl, CXXConstructorDecl>
650     cxxConstructorDecl;
651 const internal::VariadicDynCastAllOfMatcher<Decl, CXXDestructorDecl>
652     cxxDestructorDecl;
653 const internal::VariadicDynCastAllOfMatcher<Decl, EnumDecl> enumDecl;
654 const internal::VariadicDynCastAllOfMatcher<Decl, EnumConstantDecl>
655     enumConstantDecl;
656 const internal::VariadicDynCastAllOfMatcher<Decl, CXXMethodDecl> cxxMethodDecl;
657 const internal::VariadicDynCastAllOfMatcher<Decl, CXXConversionDecl>
658     cxxConversionDecl;
659 const internal::VariadicDynCastAllOfMatcher<Decl, VarDecl> varDecl;
660 const internal::VariadicDynCastAllOfMatcher<Decl, FieldDecl> fieldDecl;
661 const internal::VariadicDynCastAllOfMatcher<Decl, IndirectFieldDecl>
662     indirectFieldDecl;
663 const internal::VariadicDynCastAllOfMatcher<Decl, FunctionDecl> functionDecl;
664 const internal::VariadicDynCastAllOfMatcher<Decl, FunctionTemplateDecl>
665     functionTemplateDecl;
666 const internal::VariadicDynCastAllOfMatcher<Decl, FriendDecl> friendDecl;
667 const internal::VariadicAllOfMatcher<Stmt> stmt;
668 const internal::VariadicDynCastAllOfMatcher<Stmt, DeclStmt> declStmt;
669 const internal::VariadicDynCastAllOfMatcher<Stmt, MemberExpr> memberExpr;
670 const internal::VariadicDynCastAllOfMatcher<Stmt, UnresolvedMemberExpr>
671     unresolvedMemberExpr;
672 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDependentScopeMemberExpr>
673     cxxDependentScopeMemberExpr;
674 const internal::VariadicDynCastAllOfMatcher<Stmt, CallExpr> callExpr;
675 const internal::VariadicDynCastAllOfMatcher<Stmt, LambdaExpr> lambdaExpr;
676 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXMemberCallExpr>
677     cxxMemberCallExpr;
678 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCMessageExpr>
679     objcMessageExpr;
680 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCInterfaceDecl>
681     objcInterfaceDecl;
682 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCImplementationDecl>
683     objcImplementationDecl;
684 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCProtocolDecl>
685     objcProtocolDecl;
686 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCCategoryDecl>
687     objcCategoryDecl;
688 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCCategoryImplDecl>
689     objcCategoryImplDecl;
690 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCMethodDecl>
691     objcMethodDecl;
692 const internal::VariadicDynCastAllOfMatcher<Decl, BlockDecl>
693     blockDecl;
694 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCIvarDecl> objcIvarDecl;
695 const internal::VariadicDynCastAllOfMatcher<Decl, ObjCPropertyDecl>
696     objcPropertyDecl;
697 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtThrowStmt>
698     objcThrowStmt;
699 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtTryStmt> objcTryStmt;
700 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtCatchStmt>
701     objcCatchStmt;
702 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCAtFinallyStmt>
703     objcFinallyStmt;
704 const internal::VariadicDynCastAllOfMatcher<Stmt, ExprWithCleanups>
705     exprWithCleanups;
706 const internal::VariadicDynCastAllOfMatcher<Stmt, InitListExpr> initListExpr;
707 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXStdInitializerListExpr>
708     cxxStdInitializerListExpr;
709 const internal::VariadicDynCastAllOfMatcher<Stmt, ImplicitValueInitExpr>
710     implicitValueInitExpr;
711 const internal::VariadicDynCastAllOfMatcher<Stmt, ParenListExpr> parenListExpr;
712 const internal::VariadicDynCastAllOfMatcher<Stmt, SubstNonTypeTemplateParmExpr>
713     substNonTypeTemplateParmExpr;
714 const internal::VariadicDynCastAllOfMatcher<Decl, UsingDecl> usingDecl;
715 const internal::VariadicDynCastAllOfMatcher<Decl, UsingDirectiveDecl>
716     usingDirectiveDecl;
717 const internal::VariadicDynCastAllOfMatcher<Stmt, UnresolvedLookupExpr>
718     unresolvedLookupExpr;
719 const internal::VariadicDynCastAllOfMatcher<Decl, UnresolvedUsingValueDecl>
720     unresolvedUsingValueDecl;
721 const internal::VariadicDynCastAllOfMatcher<Decl, UnresolvedUsingTypenameDecl>
722     unresolvedUsingTypenameDecl;
723 const internal::VariadicDynCastAllOfMatcher<Stmt, ConstantExpr> constantExpr;
724 const internal::VariadicDynCastAllOfMatcher<Stmt, ParenExpr> parenExpr;
725 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXConstructExpr>
726     cxxConstructExpr;
727 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXUnresolvedConstructExpr>
728     cxxUnresolvedConstructExpr;
729 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXThisExpr> cxxThisExpr;
730 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXBindTemporaryExpr>
731     cxxBindTemporaryExpr;
732 const internal::VariadicDynCastAllOfMatcher<Stmt, MaterializeTemporaryExpr>
733     materializeTemporaryExpr;
734 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXNewExpr> cxxNewExpr;
735 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDeleteExpr> cxxDeleteExpr;
736 const internal::VariadicDynCastAllOfMatcher<Stmt, ArraySubscriptExpr>
737     arraySubscriptExpr;
738 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDefaultArgExpr>
739     cxxDefaultArgExpr;
740 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXOperatorCallExpr>
741     cxxOperatorCallExpr;
742 const internal::VariadicDynCastAllOfMatcher<Stmt, Expr> expr;
743 const internal::VariadicDynCastAllOfMatcher<Stmt, DeclRefExpr> declRefExpr;
744 const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCIvarRefExpr> objcIvarRefExpr;
745 const internal::VariadicDynCastAllOfMatcher<Stmt, BlockExpr> blockExpr;
746 const internal::VariadicDynCastAllOfMatcher<Stmt, IfStmt> ifStmt;
747 const internal::VariadicDynCastAllOfMatcher<Stmt, ForStmt> forStmt;
748 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXForRangeStmt>
749     cxxForRangeStmt;
750 const internal::VariadicDynCastAllOfMatcher<Stmt, WhileStmt> whileStmt;
751 const internal::VariadicDynCastAllOfMatcher<Stmt, DoStmt> doStmt;
752 const internal::VariadicDynCastAllOfMatcher<Stmt, BreakStmt> breakStmt;
753 const internal::VariadicDynCastAllOfMatcher<Stmt, ContinueStmt> continueStmt;
754 const internal::VariadicDynCastAllOfMatcher<Stmt, ReturnStmt> returnStmt;
755 const internal::VariadicDynCastAllOfMatcher<Stmt, GotoStmt> gotoStmt;
756 const internal::VariadicDynCastAllOfMatcher<Stmt, LabelStmt> labelStmt;
757 const internal::VariadicDynCastAllOfMatcher<Stmt, AddrLabelExpr> addrLabelExpr;
758 const internal::VariadicDynCastAllOfMatcher<Stmt, SwitchStmt> switchStmt;
759 const internal::VariadicDynCastAllOfMatcher<Stmt, SwitchCase> switchCase;
760 const internal::VariadicDynCastAllOfMatcher<Stmt, CaseStmt> caseStmt;
761 const internal::VariadicDynCastAllOfMatcher<Stmt, DefaultStmt> defaultStmt;
762 const internal::VariadicDynCastAllOfMatcher<Stmt, CompoundStmt> compoundStmt;
763 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXCatchStmt> cxxCatchStmt;
764 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXTryStmt> cxxTryStmt;
765 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXThrowExpr> cxxThrowExpr;
766 const internal::VariadicDynCastAllOfMatcher<Stmt, NullStmt> nullStmt;
767 const internal::VariadicDynCastAllOfMatcher<Stmt, AsmStmt> asmStmt;
768 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXBoolLiteralExpr>
769     cxxBoolLiteral;
770 const internal::VariadicDynCastAllOfMatcher<Stmt, StringLiteral> stringLiteral;
771 const internal::VariadicDynCastAllOfMatcher<Stmt, CharacterLiteral>
772     characterLiteral;
773 const internal::VariadicDynCastAllOfMatcher<Stmt, IntegerLiteral>
774     integerLiteral;
775 const internal::VariadicDynCastAllOfMatcher<Stmt, FloatingLiteral> floatLiteral;
776 const internal::VariadicDynCastAllOfMatcher<Stmt, ImaginaryLiteral> imaginaryLiteral;
777 const internal::VariadicDynCastAllOfMatcher<Stmt, UserDefinedLiteral>
778     userDefinedLiteral;
779 const internal::VariadicDynCastAllOfMatcher<Stmt, CompoundLiteralExpr>
780     compoundLiteralExpr;
781 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXNullPtrLiteralExpr>
782     cxxNullPtrLiteralExpr;
783 const internal::VariadicDynCastAllOfMatcher<Stmt, ChooseExpr> chooseExpr;
784 const internal::VariadicDynCastAllOfMatcher<Stmt, GNUNullExpr> gnuNullExpr;
785 const internal::VariadicDynCastAllOfMatcher<Stmt, AtomicExpr> atomicExpr;
786 const internal::VariadicDynCastAllOfMatcher<Stmt, StmtExpr> stmtExpr;
787 const internal::VariadicDynCastAllOfMatcher<Stmt, BinaryOperator>
788     binaryOperator;
789 const internal::VariadicDynCastAllOfMatcher<Stmt, UnaryOperator> unaryOperator;
790 const internal::VariadicDynCastAllOfMatcher<Stmt, ConditionalOperator>
791     conditionalOperator;
792 const internal::VariadicDynCastAllOfMatcher<Stmt, BinaryConditionalOperator>
793     binaryConditionalOperator;
794 const internal::VariadicDynCastAllOfMatcher<Stmt, OpaqueValueExpr>
795     opaqueValueExpr;
796 const internal::VariadicDynCastAllOfMatcher<Decl, StaticAssertDecl>
797     staticAssertDecl;
798 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXReinterpretCastExpr>
799     cxxReinterpretCastExpr;
800 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXStaticCastExpr>
801     cxxStaticCastExpr;
802 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXDynamicCastExpr>
803     cxxDynamicCastExpr;
804 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXConstCastExpr>
805     cxxConstCastExpr;
806 const internal::VariadicDynCastAllOfMatcher<Stmt, CStyleCastExpr>
807     cStyleCastExpr;
808 const internal::VariadicDynCastAllOfMatcher<Stmt, ExplicitCastExpr>
809     explicitCastExpr;
810 const internal::VariadicDynCastAllOfMatcher<Stmt, ImplicitCastExpr>
811     implicitCastExpr;
812 const internal::VariadicDynCastAllOfMatcher<Stmt, CastExpr> castExpr;
813 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXFunctionalCastExpr>
814     cxxFunctionalCastExpr;
815 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXTemporaryObjectExpr>
816     cxxTemporaryObjectExpr;
817 const internal::VariadicDynCastAllOfMatcher<Stmt, PredefinedExpr>
818     predefinedExpr;
819 const internal::VariadicDynCastAllOfMatcher<Stmt, DesignatedInitExpr>
820     designatedInitExpr;
821 const internal::VariadicOperatorMatcherFunc<
822     2, std::numeric_limits<unsigned>::max()>
823     eachOf = {internal::DynTypedMatcher::VO_EachOf};
824 const internal::VariadicOperatorMatcherFunc<
825     2, std::numeric_limits<unsigned>::max()>
826     anyOf = {internal::DynTypedMatcher::VO_AnyOf};
827 const internal::VariadicOperatorMatcherFunc<
828     2, std::numeric_limits<unsigned>::max()>
829     allOf = {internal::DynTypedMatcher::VO_AllOf};
830 const internal::VariadicOperatorMatcherFunc<
831     1, std::numeric_limits<unsigned>::max()>
832     optionally = {internal::DynTypedMatcher::VO_Optionally};
833 const internal::VariadicFunction<internal::Matcher<NamedDecl>, StringRef,
834                                  internal::hasAnyNameFunc>
835     hasAnyName = {};
836 const internal::VariadicFunction<internal::Matcher<ObjCMessageExpr>, StringRef,
837                                  internal::hasAnySelectorFunc>
838     hasAnySelector = {};
839 const internal::ArgumentAdaptingMatcherFunc<internal::HasMatcher> has = {};
840 const internal::ArgumentAdaptingMatcherFunc<internal::HasDescendantMatcher>
841     hasDescendant = {};
842 const internal::ArgumentAdaptingMatcherFunc<internal::ForEachMatcher> forEach =
843     {};
844 const internal::ArgumentAdaptingMatcherFunc<internal::ForEachDescendantMatcher>
845     forEachDescendant = {};
846 const internal::ArgumentAdaptingMatcherFunc<
847     internal::HasParentMatcher,
848     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc>,
849     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc>>
850     hasParent = {};
851 const internal::ArgumentAdaptingMatcherFunc<
852     internal::HasAncestorMatcher,
853     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc>,
854     internal::TypeList<Decl, NestedNameSpecifierLoc, Stmt, TypeLoc>>
855     hasAncestor = {};
856 const internal::VariadicOperatorMatcherFunc<1, 1> unless = {
857     internal::DynTypedMatcher::VO_UnaryNot};
858 const internal::VariadicAllOfMatcher<NestedNameSpecifier> nestedNameSpecifier;
859 const internal::VariadicAllOfMatcher<NestedNameSpecifierLoc>
860     nestedNameSpecifierLoc;
861 const internal::VariadicDynCastAllOfMatcher<Stmt, CUDAKernelCallExpr>
862     cudaKernelCallExpr;
863 const AstTypeMatcher<BuiltinType> builtinType;
864 const AstTypeMatcher<ArrayType> arrayType;
865 const AstTypeMatcher<ComplexType> complexType;
866 const AstTypeMatcher<ConstantArrayType> constantArrayType;
867 const AstTypeMatcher<DependentSizedArrayType> dependentSizedArrayType;
868 const AstTypeMatcher<IncompleteArrayType> incompleteArrayType;
869 const AstTypeMatcher<VariableArrayType> variableArrayType;
870 const AstTypeMatcher<AtomicType> atomicType;
871 const AstTypeMatcher<AutoType> autoType;
872 const AstTypeMatcher<DecltypeType> decltypeType;
873 const AstTypeMatcher<FunctionType> functionType;
874 const AstTypeMatcher<FunctionProtoType> functionProtoType;
875 const AstTypeMatcher<ParenType> parenType;
876 const AstTypeMatcher<BlockPointerType> blockPointerType;
877 const AstTypeMatcher<MemberPointerType> memberPointerType;
878 const AstTypeMatcher<PointerType> pointerType;
879 const AstTypeMatcher<ObjCObjectPointerType> objcObjectPointerType;
880 const AstTypeMatcher<ReferenceType> referenceType;
881 const AstTypeMatcher<LValueReferenceType> lValueReferenceType;
882 const AstTypeMatcher<RValueReferenceType> rValueReferenceType;
883 const AstTypeMatcher<TypedefType> typedefType;
884 const AstTypeMatcher<EnumType> enumType;
885 const AstTypeMatcher<TemplateSpecializationType> templateSpecializationType;
886 const AstTypeMatcher<UnaryTransformType> unaryTransformType;
887 const AstTypeMatcher<RecordType> recordType;
888 const AstTypeMatcher<TagType> tagType;
889 const AstTypeMatcher<ElaboratedType> elaboratedType;
890 const AstTypeMatcher<SubstTemplateTypeParmType> substTemplateTypeParmType;
891 const AstTypeMatcher<TemplateTypeParmType> templateTypeParmType;
892 const AstTypeMatcher<InjectedClassNameType> injectedClassNameType;
893 const AstTypeMatcher<DecayedType> decayedType;
894 AST_TYPELOC_TRAVERSE_MATCHER_DEF(hasElementType,
895                                  AST_POLYMORPHIC_SUPPORTED_TYPES(ArrayType,
896                                                                  ComplexType));
897 AST_TYPELOC_TRAVERSE_MATCHER_DEF(hasValueType,
898                                  AST_POLYMORPHIC_SUPPORTED_TYPES(AtomicType));
899 AST_TYPELOC_TRAVERSE_MATCHER_DEF(
900     pointee,
901     AST_POLYMORPHIC_SUPPORTED_TYPES(BlockPointerType, MemberPointerType,
902                                     PointerType, ReferenceType));
903 
904 const internal::VariadicDynCastAllOfMatcher<Stmt, OMPExecutableDirective>
905     ompExecutableDirective;
906 const internal::VariadicDynCastAllOfMatcher<OMPClause, OMPDefaultClause>
907     ompDefaultClause;
908 const internal::VariadicDynCastAllOfMatcher<Decl, CXXDeductionGuideDecl>
909     cxxDeductionGuideDecl;
910 
911 } // end namespace ast_matchers
912 } // end namespace clang
913