1 //===- Registry.cpp - Matcher registry ------------------------------------===//
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 /// \file
10 /// Registry map populated at static initialization time.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/ASTMatchers/Dynamic/Registry.h"
15 #include "Marshallers.h"
16 #include "clang/AST/ASTTypeTraits.h"
17 #include "clang/ASTMatchers/ASTMatchers.h"
18 #include "clang/ASTMatchers/Dynamic/Diagnostics.h"
19 #include "clang/ASTMatchers/Dynamic/VariantValue.h"
20 #include "llvm/ADT/STLExtras.h"
21 #include "llvm/ADT/StringMap.h"
22 #include "llvm/ADT/StringRef.h"
23 #include "llvm/Support/ManagedStatic.h"
24 #include "llvm/Support/raw_ostream.h"
25 #include <cassert>
26 #include <iterator>
27 #include <memory>
28 #include <optional>
29 #include <set>
30 #include <string>
31 #include <utility>
32 #include <vector>
33 
34 namespace clang {
35 namespace ast_matchers {
36 namespace dynamic {
37 
38 namespace {
39 
40 using internal::MatcherDescriptor;
41 
42 using ConstructorMap =
43     llvm::StringMap<std::unique_ptr<const MatcherDescriptor>>;
44 
45 class RegistryMaps {
46 public:
47   RegistryMaps();
48   ~RegistryMaps();
49 
50   const ConstructorMap &constructors() const { return Constructors; }
51 
52 private:
53   void registerMatcher(StringRef MatcherName,
54                        std::unique_ptr<MatcherDescriptor> Callback);
55 
56   ConstructorMap Constructors;
57 };
58 
59 } // namespace
60 
61 void RegistryMaps::registerMatcher(
62     StringRef MatcherName, std::unique_ptr<MatcherDescriptor> Callback) {
63   assert(!Constructors.contains(MatcherName));
64   Constructors[MatcherName] = std::move(Callback);
65 }
66 
67 #define REGISTER_MATCHER(name)                                                 \
68   registerMatcher(#name, internal::makeMatcherAutoMarshall(                    \
69                              ::clang::ast_matchers::name, #name));
70 
71 #define REGISTER_MATCHER_OVERLOAD(name)                                        \
72   registerMatcher(#name,                                                       \
73       std::make_unique<internal::OverloadedMatcherDescriptor>(name##Callbacks))
74 
75 #define SPECIFIC_MATCHER_OVERLOAD(name, Id)                                    \
76   static_cast<::clang::ast_matchers::name##_Type##Id>(                         \
77       ::clang::ast_matchers::name)
78 
79 #define MATCHER_OVERLOAD_ENTRY(name, Id)                                       \
80         internal::makeMatcherAutoMarshall(SPECIFIC_MATCHER_OVERLOAD(name, Id), \
81                                           #name)
82 
83 #define REGISTER_OVERLOADED_2(name)                                            \
84   do {                                                                         \
85     std::unique_ptr<MatcherDescriptor> name##Callbacks[] = {                   \
86         MATCHER_OVERLOAD_ENTRY(name, 0),                                       \
87         MATCHER_OVERLOAD_ENTRY(name, 1)};                                      \
88     REGISTER_MATCHER_OVERLOAD(name);                                           \
89   } while (false)
90 
91 #define REGISTER_REGEX_MATCHER(name)                                           \
92   registerMatcher(#name, internal::makeMatcherRegexMarshall(name, name))
93 
94 /// Generate a registry map with all the known matchers.
95 /// Please keep sorted alphabetically!
96 RegistryMaps::RegistryMaps() {
97   // TODO: Here is the list of the missing matchers, grouped by reason.
98   //
99   // Polymorphic + argument overload:
100   // findAll
101   //
102   // Other:
103   // equalsNode
104 
105   registerMatcher("mapAnyOf",
106                   std::make_unique<internal::MapAnyOfBuilderDescriptor>());
107 
108   REGISTER_OVERLOADED_2(callee);
109   REGISTER_OVERLOADED_2(hasPrefix);
110   REGISTER_OVERLOADED_2(hasType);
111   REGISTER_OVERLOADED_2(ignoringParens);
112   REGISTER_OVERLOADED_2(isDerivedFrom);
113   REGISTER_OVERLOADED_2(isDirectlyDerivedFrom);
114   REGISTER_OVERLOADED_2(isSameOrDerivedFrom);
115   REGISTER_OVERLOADED_2(loc);
116   REGISTER_OVERLOADED_2(pointsTo);
117   REGISTER_OVERLOADED_2(references);
118   REGISTER_OVERLOADED_2(thisPointerType);
119 
120   std::unique_ptr<MatcherDescriptor> equalsCallbacks[] = {
121       MATCHER_OVERLOAD_ENTRY(equals, 0),
122       MATCHER_OVERLOAD_ENTRY(equals, 1),
123       MATCHER_OVERLOAD_ENTRY(equals, 2),
124   };
125   REGISTER_MATCHER_OVERLOAD(equals);
126 
127   REGISTER_REGEX_MATCHER(isExpansionInFileMatching);
128   REGISTER_REGEX_MATCHER(matchesName);
129   REGISTER_REGEX_MATCHER(matchesSelector);
130 
131   REGISTER_MATCHER(accessSpecDecl);
132   REGISTER_MATCHER(addrLabelExpr);
133   REGISTER_MATCHER(alignOfExpr);
134   REGISTER_MATCHER(allOf);
135   REGISTER_MATCHER(anyOf);
136   REGISTER_MATCHER(anything);
137   REGISTER_MATCHER(arrayInitIndexExpr);
138   REGISTER_MATCHER(arrayInitLoopExpr);
139   REGISTER_MATCHER(argumentCountIs);
140   REGISTER_MATCHER(argumentCountAtLeast);
141   REGISTER_MATCHER(arraySubscriptExpr);
142   REGISTER_MATCHER(arrayType);
143   REGISTER_MATCHER(asString);
144   REGISTER_MATCHER(asmStmt);
145   REGISTER_MATCHER(atomicExpr);
146   REGISTER_MATCHER(atomicType);
147   REGISTER_MATCHER(attr);
148   REGISTER_MATCHER(autoType);
149   REGISTER_MATCHER(autoreleasePoolStmt)
150   REGISTER_MATCHER(binaryConditionalOperator);
151   REGISTER_MATCHER(binaryOperator);
152   REGISTER_MATCHER(binaryOperation);
153   REGISTER_MATCHER(bindingDecl);
154   REGISTER_MATCHER(blockDecl);
155   REGISTER_MATCHER(blockExpr);
156   REGISTER_MATCHER(blockPointerType);
157   REGISTER_MATCHER(booleanType);
158   REGISTER_MATCHER(breakStmt);
159   REGISTER_MATCHER(builtinType);
160   REGISTER_MATCHER(cStyleCastExpr);
161   REGISTER_MATCHER(callExpr);
162   REGISTER_MATCHER(capturesThis);
163   REGISTER_MATCHER(capturesVar);
164   REGISTER_MATCHER(caseStmt);
165   REGISTER_MATCHER(castExpr);
166   REGISTER_MATCHER(characterLiteral);
167   REGISTER_MATCHER(chooseExpr);
168   REGISTER_MATCHER(classTemplateDecl);
169   REGISTER_MATCHER(classTemplatePartialSpecializationDecl);
170   REGISTER_MATCHER(classTemplateSpecializationDecl);
171   REGISTER_MATCHER(complexType);
172   REGISTER_MATCHER(compoundLiteralExpr);
173   REGISTER_MATCHER(compoundStmt);
174   REGISTER_MATCHER(coawaitExpr);
175   REGISTER_MATCHER(conceptDecl);
176   REGISTER_MATCHER(conditionalOperator);
177   REGISTER_MATCHER(constantArrayType);
178   REGISTER_MATCHER(constantExpr);
179   REGISTER_MATCHER(containsDeclaration);
180   REGISTER_MATCHER(continueStmt);
181   REGISTER_MATCHER(convertVectorExpr);
182   REGISTER_MATCHER(coreturnStmt);
183   REGISTER_MATCHER(coroutineBodyStmt);
184   REGISTER_MATCHER(coyieldExpr);
185   REGISTER_MATCHER(cudaKernelCallExpr);
186   REGISTER_MATCHER(cxxBaseSpecifier);
187   REGISTER_MATCHER(cxxBindTemporaryExpr);
188   REGISTER_MATCHER(cxxBoolLiteral);
189   REGISTER_MATCHER(cxxCatchStmt);
190   REGISTER_MATCHER(cxxConstCastExpr);
191   REGISTER_MATCHER(cxxConstructExpr);
192   REGISTER_MATCHER(cxxConstructorDecl);
193   REGISTER_MATCHER(cxxConversionDecl);
194   REGISTER_MATCHER(cxxCtorInitializer);
195   REGISTER_MATCHER(cxxDeductionGuideDecl);
196   REGISTER_MATCHER(cxxDefaultArgExpr);
197   REGISTER_MATCHER(cxxDeleteExpr);
198   REGISTER_MATCHER(cxxDependentScopeMemberExpr);
199   REGISTER_MATCHER(cxxDestructorDecl);
200   REGISTER_MATCHER(cxxDynamicCastExpr);
201   REGISTER_MATCHER(cxxFoldExpr);
202   REGISTER_MATCHER(cxxForRangeStmt);
203   REGISTER_MATCHER(cxxFunctionalCastExpr);
204   REGISTER_MATCHER(cxxMemberCallExpr);
205   REGISTER_MATCHER(cxxMethodDecl);
206   REGISTER_MATCHER(cxxNewExpr);
207   REGISTER_MATCHER(cxxNoexceptExpr);
208   REGISTER_MATCHER(cxxNullPtrLiteralExpr);
209   REGISTER_MATCHER(cxxOperatorCallExpr);
210   REGISTER_MATCHER(cxxRecordDecl);
211   REGISTER_MATCHER(cxxReinterpretCastExpr);
212   REGISTER_MATCHER(cxxRewrittenBinaryOperator);
213   REGISTER_MATCHER(cxxStaticCastExpr);
214   REGISTER_MATCHER(cxxStdInitializerListExpr);
215   REGISTER_MATCHER(cxxTemporaryObjectExpr);
216   REGISTER_MATCHER(cxxThisExpr);
217   REGISTER_MATCHER(cxxThrowExpr);
218   REGISTER_MATCHER(cxxTryStmt);
219   REGISTER_MATCHER(cxxUnresolvedConstructExpr);
220   REGISTER_MATCHER(decayedType);
221   REGISTER_MATCHER(decl);
222   REGISTER_MATCHER(decompositionDecl);
223   REGISTER_MATCHER(declCountIs);
224   REGISTER_MATCHER(declRefExpr);
225   REGISTER_MATCHER(declStmt);
226   REGISTER_MATCHER(declaratorDecl);
227   REGISTER_MATCHER(decltypeType);
228   REGISTER_MATCHER(deducedTemplateSpecializationType);
229   REGISTER_MATCHER(defaultStmt);
230   REGISTER_MATCHER(dependentCoawaitExpr);
231   REGISTER_MATCHER(dependentSizedArrayType);
232   REGISTER_MATCHER(dependentSizedExtVectorType);
233   REGISTER_MATCHER(designatedInitExpr);
234   REGISTER_MATCHER(designatorCountIs);
235   REGISTER_MATCHER(doStmt);
236   REGISTER_MATCHER(eachOf);
237   REGISTER_MATCHER(elaboratedType);
238   REGISTER_MATCHER(elaboratedTypeLoc);
239   REGISTER_MATCHER(usingType);
240   REGISTER_MATCHER(enumConstantDecl);
241   REGISTER_MATCHER(enumDecl);
242   REGISTER_MATCHER(enumType);
243   REGISTER_MATCHER(equalsBoundNode);
244   REGISTER_MATCHER(equalsIntegralValue);
245   REGISTER_MATCHER(explicitCastExpr);
246   REGISTER_MATCHER(expr);
247   REGISTER_MATCHER(exprWithCleanups);
248   REGISTER_MATCHER(fieldDecl);
249   REGISTER_MATCHER(fixedPointLiteral);
250   REGISTER_MATCHER(floatLiteral);
251   REGISTER_MATCHER(forCallable);
252   REGISTER_MATCHER(forDecomposition);
253   REGISTER_MATCHER(forEach);
254   REGISTER_MATCHER(forEachArgumentWithParam);
255   REGISTER_MATCHER(forEachArgumentWithParamType);
256   REGISTER_MATCHER(forEachConstructorInitializer);
257   REGISTER_MATCHER(forEachDescendant);
258   REGISTER_MATCHER(forEachLambdaCapture);
259   REGISTER_MATCHER(forEachOverridden);
260   REGISTER_MATCHER(forEachSwitchCase);
261   REGISTER_MATCHER(forEachTemplateArgument);
262   REGISTER_MATCHER(forField);
263   REGISTER_MATCHER(forFunction);
264   REGISTER_MATCHER(forStmt);
265   REGISTER_MATCHER(friendDecl);
266   REGISTER_MATCHER(functionDecl);
267   REGISTER_MATCHER(functionProtoType);
268   REGISTER_MATCHER(functionTemplateDecl);
269   REGISTER_MATCHER(functionType);
270   REGISTER_MATCHER(genericSelectionExpr);
271   REGISTER_MATCHER(gnuNullExpr);
272   REGISTER_MATCHER(gotoStmt);
273   REGISTER_MATCHER(has);
274   REGISTER_MATCHER(hasAncestor);
275   REGISTER_MATCHER(hasAnyArgument);
276   REGISTER_MATCHER(hasAnyBase);
277   REGISTER_MATCHER(hasAnyBinding);
278   REGISTER_MATCHER(hasAnyBody);
279   REGISTER_MATCHER(hasAnyCapture);
280   REGISTER_MATCHER(hasAnyClause);
281   REGISTER_MATCHER(hasAnyConstructorInitializer);
282   REGISTER_MATCHER(hasAnyDeclaration);
283   REGISTER_MATCHER(hasAnyName);
284   REGISTER_MATCHER(hasAnyOperatorName);
285   REGISTER_MATCHER(hasAnyOverloadedOperatorName);
286   REGISTER_MATCHER(hasAnyParameter);
287   REGISTER_MATCHER(hasAnyPlacementArg);
288   REGISTER_MATCHER(hasAnySelector);
289   REGISTER_MATCHER(hasAnySubstatement);
290   REGISTER_MATCHER(hasAnyTemplateArgument);
291   REGISTER_MATCHER(hasAnyTemplateArgumentLoc);
292   REGISTER_MATCHER(hasAnyUsingShadowDecl);
293   REGISTER_MATCHER(hasArgument);
294   REGISTER_MATCHER(hasArgumentOfType);
295   REGISTER_MATCHER(hasArraySize);
296   REGISTER_MATCHER(hasAttr);
297   REGISTER_MATCHER(hasAutomaticStorageDuration);
298   REGISTER_MATCHER(hasBase);
299   REGISTER_MATCHER(hasBinding);
300   REGISTER_MATCHER(hasBitWidth);
301   REGISTER_MATCHER(hasBody);
302   REGISTER_MATCHER(hasCanonicalType);
303   REGISTER_MATCHER(hasCaseConstant);
304   REGISTER_MATCHER(hasCastKind);
305   REGISTER_MATCHER(hasCondition);
306   REGISTER_MATCHER(hasConditionVariableStatement);
307   REGISTER_MATCHER(hasDecayedType);
308   REGISTER_MATCHER(hasDeclContext);
309   REGISTER_MATCHER(hasDeclaration);
310   REGISTER_MATCHER(hasDeducedType);
311   REGISTER_MATCHER(hasDefaultArgument);
312   REGISTER_MATCHER(hasDefinition);
313   REGISTER_MATCHER(hasDescendant);
314   REGISTER_MATCHER(hasDestinationType);
315   REGISTER_MATCHER(hasDirectBase);
316   REGISTER_MATCHER(hasDynamicExceptionSpec);
317   REGISTER_MATCHER(hasEitherOperand);
318   REGISTER_MATCHER(hasElementType);
319   REGISTER_MATCHER(hasElse);
320   REGISTER_MATCHER(hasExplicitSpecifier);
321   REGISTER_MATCHER(hasExternalFormalLinkage);
322   REGISTER_MATCHER(hasFalseExpression);
323   REGISTER_MATCHER(hasFoldInit);
324   REGISTER_MATCHER(hasGlobalStorage);
325   REGISTER_MATCHER(hasImplicitDestinationType);
326   REGISTER_MATCHER(hasInClassInitializer);
327   REGISTER_MATCHER(hasIncrement);
328   REGISTER_MATCHER(hasIndex);
329   REGISTER_MATCHER(hasInit);
330   REGISTER_MATCHER(hasInitializer);
331   REGISTER_MATCHER(hasInitStatement);
332   REGISTER_MATCHER(hasKeywordSelector);
333   REGISTER_MATCHER(hasLHS);
334   REGISTER_MATCHER(hasLocalQualifiers);
335   REGISTER_MATCHER(hasLocalStorage);
336   REGISTER_MATCHER(hasLoopInit);
337   REGISTER_MATCHER(hasLoopVariable);
338   REGISTER_MATCHER(hasMemberName);
339   REGISTER_MATCHER(hasMethod);
340   REGISTER_MATCHER(hasName);
341   REGISTER_MATCHER(hasNamedTypeLoc);
342   REGISTER_MATCHER(hasNullSelector);
343   REGISTER_MATCHER(hasObjectExpression);
344   REGISTER_MATCHER(hasOperands);
345   REGISTER_MATCHER(hasOperatorName);
346   REGISTER_MATCHER(hasOverloadedOperatorName);
347   REGISTER_MATCHER(hasParameter);
348   REGISTER_MATCHER(hasParent);
349   REGISTER_MATCHER(hasPattern);
350   REGISTER_MATCHER(hasPointeeLoc);
351   REGISTER_MATCHER(hasQualifier);
352   REGISTER_MATCHER(hasRHS);
353   REGISTER_MATCHER(hasRangeInit);
354   REGISTER_MATCHER(hasReceiver);
355   REGISTER_MATCHER(hasReceiverType);
356   REGISTER_MATCHER(hasReferentLoc);
357   REGISTER_MATCHER(hasReplacementType);
358   REGISTER_MATCHER(hasReturnTypeLoc);
359   REGISTER_MATCHER(hasReturnValue);
360   REGISTER_MATCHER(hasPlacementArg);
361   REGISTER_MATCHER(hasSelector);
362   REGISTER_MATCHER(hasSingleDecl);
363   REGISTER_MATCHER(hasSize);
364   REGISTER_MATCHER(hasSizeExpr);
365   REGISTER_MATCHER(hasSourceExpression);
366   REGISTER_MATCHER(hasSpecializedTemplate);
367   REGISTER_MATCHER(hasStaticStorageDuration);
368   REGISTER_MATCHER(hasStructuredBlock);
369   REGISTER_MATCHER(hasSyntacticForm);
370   REGISTER_MATCHER(hasTargetDecl);
371   REGISTER_MATCHER(hasTemplateArgument);
372   REGISTER_MATCHER(hasTemplateArgumentLoc);
373   REGISTER_MATCHER(hasThen);
374   REGISTER_MATCHER(hasThreadStorageDuration);
375   REGISTER_MATCHER(hasTrailingReturn);
376   REGISTER_MATCHER(hasTrueExpression);
377   REGISTER_MATCHER(hasTypeLoc);
378   REGISTER_MATCHER(hasUnaryOperand);
379   REGISTER_MATCHER(hasUnarySelector);
380   REGISTER_MATCHER(hasUnderlyingDecl);
381   REGISTER_MATCHER(hasUnderlyingType);
382   REGISTER_MATCHER(hasUnqualifiedDesugaredType);
383   REGISTER_MATCHER(hasUnqualifiedLoc);
384   REGISTER_MATCHER(hasValueType);
385   REGISTER_MATCHER(ifStmt);
386   REGISTER_MATCHER(ignoringElidableConstructorCall);
387   REGISTER_MATCHER(ignoringImpCasts);
388   REGISTER_MATCHER(ignoringImplicit);
389   REGISTER_MATCHER(ignoringParenCasts);
390   REGISTER_MATCHER(ignoringParenImpCasts);
391   REGISTER_MATCHER(imaginaryLiteral);
392   REGISTER_MATCHER(implicitCastExpr);
393   REGISTER_MATCHER(implicitValueInitExpr);
394   REGISTER_MATCHER(incompleteArrayType);
395   REGISTER_MATCHER(indirectFieldDecl);
396   REGISTER_MATCHER(initListExpr);
397   REGISTER_MATCHER(injectedClassNameType);
398   REGISTER_MATCHER(innerType);
399   REGISTER_MATCHER(integerLiteral);
400   REGISTER_MATCHER(invocation);
401   REGISTER_MATCHER(isAllowedToContainClauseKind);
402   REGISTER_MATCHER(isAnonymous);
403   REGISTER_MATCHER(isAnyCharacter);
404   REGISTER_MATCHER(isAnyPointer);
405   REGISTER_MATCHER(isArray);
406   REGISTER_MATCHER(isArrow);
407   REGISTER_MATCHER(isAssignmentOperator);
408   REGISTER_MATCHER(isAtPosition);
409   REGISTER_MATCHER(isBaseInitializer);
410   REGISTER_MATCHER(isBinaryFold);
411   REGISTER_MATCHER(isBitField);
412   REGISTER_MATCHER(isCatchAll);
413   REGISTER_MATCHER(isClass);
414   REGISTER_MATCHER(isClassMessage);
415   REGISTER_MATCHER(isClassMethod);
416   REGISTER_MATCHER(isComparisonOperator);
417   REGISTER_MATCHER(isConst);
418   REGISTER_MATCHER(isConstQualified);
419   REGISTER_MATCHER(isConsteval);
420   REGISTER_MATCHER(isConstexpr);
421   REGISTER_MATCHER(isConstinit);
422   REGISTER_MATCHER(isCopyAssignmentOperator);
423   REGISTER_MATCHER(isCopyConstructor);
424   REGISTER_MATCHER(isDefaultConstructor);
425   REGISTER_MATCHER(isDefaulted);
426   REGISTER_MATCHER(isDefinition);
427   REGISTER_MATCHER(isDelegatingConstructor);
428   REGISTER_MATCHER(isDeleted);
429   REGISTER_MATCHER(isEnum);
430   REGISTER_MATCHER(isExceptionVariable);
431   REGISTER_MATCHER(isExpandedFromMacro);
432   REGISTER_MATCHER(isExpansionInMainFile);
433   REGISTER_MATCHER(isExpansionInSystemHeader);
434   REGISTER_MATCHER(isExplicit);
435   REGISTER_MATCHER(isExplicitTemplateSpecialization);
436   REGISTER_MATCHER(isExpr);
437   REGISTER_MATCHER(isExternC);
438   REGISTER_MATCHER(isFinal);
439   REGISTER_MATCHER(isPrivateKind);
440   REGISTER_MATCHER(isFirstPrivateKind);
441   REGISTER_MATCHER(isImplicit);
442   REGISTER_MATCHER(isInAnonymousNamespace);
443   REGISTER_MATCHER(isInStdNamespace);
444   REGISTER_MATCHER(isInTemplateInstantiation);
445   REGISTER_MATCHER(isInitCapture);
446   REGISTER_MATCHER(isInline);
447   REGISTER_MATCHER(isInstanceMessage);
448   REGISTER_MATCHER(isInstanceMethod);
449   REGISTER_MATCHER(isInstantiated);
450   REGISTER_MATCHER(isInstantiationDependent);
451   REGISTER_MATCHER(isInteger);
452   REGISTER_MATCHER(isIntegral);
453   REGISTER_MATCHER(isLambda);
454   REGISTER_MATCHER(isLeftFold);
455   REGISTER_MATCHER(isListInitialization);
456   REGISTER_MATCHER(isMain);
457   REGISTER_MATCHER(isMemberInitializer);
458   REGISTER_MATCHER(isMoveAssignmentOperator);
459   REGISTER_MATCHER(isMoveConstructor);
460   REGISTER_MATCHER(isNoReturn);
461   REGISTER_MATCHER(isNoThrow);
462   REGISTER_MATCHER(isNoneKind);
463   REGISTER_MATCHER(isOverride);
464   REGISTER_MATCHER(isPrivate);
465   REGISTER_MATCHER(isProtected);
466   REGISTER_MATCHER(isPublic);
467   REGISTER_MATCHER(isPure);
468   REGISTER_MATCHER(isRightFold);
469   REGISTER_MATCHER(isScoped);
470   REGISTER_MATCHER(isSharedKind);
471   REGISTER_MATCHER(isSignedInteger);
472   REGISTER_MATCHER(isStandaloneDirective);
473   REGISTER_MATCHER(isStaticLocal);
474   REGISTER_MATCHER(isStaticStorageClass);
475   REGISTER_MATCHER(isStruct);
476   REGISTER_MATCHER(isTemplateInstantiation);
477   REGISTER_MATCHER(isTypeDependent);
478   REGISTER_MATCHER(isUnaryFold);
479   REGISTER_MATCHER(isUnion);
480   REGISTER_MATCHER(isUnsignedInteger);
481   REGISTER_MATCHER(isUserProvided);
482   REGISTER_MATCHER(isValueDependent);
483   REGISTER_MATCHER(isVariadic);
484   REGISTER_MATCHER(isVirtual);
485   REGISTER_MATCHER(isVirtualAsWritten);
486   REGISTER_MATCHER(isVolatileQualified);
487   REGISTER_MATCHER(isWeak);
488   REGISTER_MATCHER(isWritten);
489   REGISTER_MATCHER(lValueReferenceType);
490   REGISTER_MATCHER(labelDecl);
491   REGISTER_MATCHER(labelStmt);
492   REGISTER_MATCHER(lambdaCapture);
493   REGISTER_MATCHER(lambdaExpr);
494   REGISTER_MATCHER(linkageSpecDecl);
495   REGISTER_MATCHER(macroQualifiedType);
496   REGISTER_MATCHER(materializeTemporaryExpr);
497   REGISTER_MATCHER(member);
498   REGISTER_MATCHER(memberExpr);
499   REGISTER_MATCHER(memberHasSameNameAsBoundNode);
500   REGISTER_MATCHER(memberPointerType);
501   REGISTER_MATCHER(namedDecl);
502   REGISTER_MATCHER(namesType);
503   REGISTER_MATCHER(namespaceAliasDecl);
504   REGISTER_MATCHER(namespaceDecl);
505   REGISTER_MATCHER(nestedNameSpecifier);
506   REGISTER_MATCHER(nestedNameSpecifierLoc);
507   REGISTER_MATCHER(nonTypeTemplateParmDecl);
508   REGISTER_MATCHER(nullPointerConstant);
509   REGISTER_MATCHER(nullStmt);
510   REGISTER_MATCHER(numSelectorArgs);
511   REGISTER_MATCHER(objcCatchStmt);
512   REGISTER_MATCHER(objcCategoryDecl);
513   REGISTER_MATCHER(objcCategoryImplDecl);
514   REGISTER_MATCHER(objcFinallyStmt);
515   REGISTER_MATCHER(objcImplementationDecl);
516   REGISTER_MATCHER(objcInterfaceDecl);
517   REGISTER_MATCHER(objcIvarDecl);
518   REGISTER_MATCHER(objcIvarRefExpr);
519   REGISTER_MATCHER(objcMessageExpr);
520   REGISTER_MATCHER(objcMethodDecl);
521   REGISTER_MATCHER(objcObjectPointerType);
522   REGISTER_MATCHER(objcPropertyDecl);
523   REGISTER_MATCHER(objcProtocolDecl);
524   REGISTER_MATCHER(objcStringLiteral);
525   REGISTER_MATCHER(objcThrowStmt);
526   REGISTER_MATCHER(objcTryStmt);
527   REGISTER_MATCHER(ofClass);
528   REGISTER_MATCHER(ofKind);
529   REGISTER_MATCHER(ompDefaultClause);
530   REGISTER_MATCHER(ompExecutableDirective);
531   REGISTER_MATCHER(on);
532   REGISTER_MATCHER(onImplicitObjectArgument);
533   REGISTER_MATCHER(opaqueValueExpr);
534   REGISTER_MATCHER(optionally);
535   REGISTER_MATCHER(parameterCountIs);
536   REGISTER_MATCHER(parenExpr);
537   REGISTER_MATCHER(parenListExpr);
538   REGISTER_MATCHER(parenType);
539   REGISTER_MATCHER(parmVarDecl);
540   REGISTER_MATCHER(pointee);
541   REGISTER_MATCHER(pointerType);
542   REGISTER_MATCHER(pointerTypeLoc);
543   REGISTER_MATCHER(predefinedExpr);
544   REGISTER_MATCHER(qualType);
545   REGISTER_MATCHER(qualifiedTypeLoc);
546   REGISTER_MATCHER(rValueReferenceType);
547   REGISTER_MATCHER(realFloatingPointType);
548   REGISTER_MATCHER(recordDecl);
549   REGISTER_MATCHER(recordType);
550   REGISTER_MATCHER(referenceType);
551   REGISTER_MATCHER(referenceTypeLoc);
552   REGISTER_MATCHER(refersToDeclaration);
553   REGISTER_MATCHER(refersToIntegralType);
554   REGISTER_MATCHER(refersToTemplate);
555   REGISTER_MATCHER(refersToType);
556   REGISTER_MATCHER(requiresZeroInitialization);
557   REGISTER_MATCHER(returnStmt);
558   REGISTER_MATCHER(returns);
559   REGISTER_MATCHER(sizeOfExpr);
560   REGISTER_MATCHER(specifiesNamespace);
561   REGISTER_MATCHER(specifiesType);
562   REGISTER_MATCHER(specifiesTypeLoc);
563   REGISTER_MATCHER(statementCountIs);
564   REGISTER_MATCHER(staticAssertDecl);
565   REGISTER_MATCHER(stmt);
566   REGISTER_MATCHER(stmtExpr);
567   REGISTER_MATCHER(stringLiteral);
568   REGISTER_MATCHER(substNonTypeTemplateParmExpr);
569   REGISTER_MATCHER(substTemplateTypeParmType);
570   REGISTER_MATCHER(switchCase);
571   REGISTER_MATCHER(switchStmt);
572   REGISTER_MATCHER(tagDecl);
573   REGISTER_MATCHER(tagType);
574   REGISTER_MATCHER(templateArgument);
575   REGISTER_MATCHER(templateArgumentCountIs);
576   REGISTER_MATCHER(templateArgumentLoc);
577   REGISTER_MATCHER(templateName);
578   REGISTER_MATCHER(templateSpecializationType);
579   REGISTER_MATCHER(templateSpecializationTypeLoc);
580   REGISTER_MATCHER(templateTemplateParmDecl);
581   REGISTER_MATCHER(templateTypeParmDecl);
582   REGISTER_MATCHER(templateTypeParmType);
583   REGISTER_MATCHER(throughUsingDecl);
584   REGISTER_MATCHER(to);
585   REGISTER_MATCHER(translationUnitDecl);
586   REGISTER_MATCHER(type);
587   REGISTER_MATCHER(typeAliasDecl);
588   REGISTER_MATCHER(typeAliasTemplateDecl);
589   REGISTER_MATCHER(typeLoc);
590   REGISTER_MATCHER(typedefDecl);
591   REGISTER_MATCHER(typedefNameDecl);
592   REGISTER_MATCHER(typedefType);
593   REGISTER_MATCHER(unaryExprOrTypeTraitExpr);
594   REGISTER_MATCHER(unaryOperator);
595   REGISTER_MATCHER(unaryTransformType);
596   REGISTER_MATCHER(unless);
597   REGISTER_MATCHER(unresolvedLookupExpr);
598   REGISTER_MATCHER(unresolvedMemberExpr);
599   REGISTER_MATCHER(unresolvedUsingTypenameDecl);
600   REGISTER_MATCHER(unresolvedUsingValueDecl);
601   REGISTER_MATCHER(userDefinedLiteral);
602   REGISTER_MATCHER(usesADL);
603   REGISTER_MATCHER(usingDecl);
604   REGISTER_MATCHER(usingEnumDecl);
605   REGISTER_MATCHER(usingDirectiveDecl);
606   REGISTER_MATCHER(valueDecl);
607   REGISTER_MATCHER(varDecl);
608   REGISTER_MATCHER(variableArrayType);
609   REGISTER_MATCHER(voidType);
610   REGISTER_MATCHER(whileStmt);
611   REGISTER_MATCHER(withInitializer);
612 }
613 
614 RegistryMaps::~RegistryMaps() = default;
615 
616 static llvm::ManagedStatic<RegistryMaps> RegistryData;
617 
618 ASTNodeKind Registry::nodeMatcherType(MatcherCtor Ctor) {
619   return Ctor->nodeMatcherType();
620 }
621 
622 internal::MatcherDescriptorPtr::MatcherDescriptorPtr(MatcherDescriptor *Ptr)
623     : Ptr(Ptr) {}
624 
625 internal::MatcherDescriptorPtr::~MatcherDescriptorPtr() { delete Ptr; }
626 
627 bool Registry::isBuilderMatcher(MatcherCtor Ctor) {
628   return Ctor->isBuilderMatcher();
629 }
630 
631 internal::MatcherDescriptorPtr
632 Registry::buildMatcherCtor(MatcherCtor Ctor, SourceRange NameRange,
633                            ArrayRef<ParserValue> Args, Diagnostics *Error) {
634   return internal::MatcherDescriptorPtr(
635       Ctor->buildMatcherCtor(NameRange, Args, Error).release());
636 }
637 
638 // static
639 std::optional<MatcherCtor> Registry::lookupMatcherCtor(StringRef MatcherName) {
640   auto it = RegistryData->constructors().find(MatcherName);
641   return it == RegistryData->constructors().end() ? std::optional<MatcherCtor>()
642                                                   : it->second.get();
643 }
644 
645 static llvm::raw_ostream &operator<<(llvm::raw_ostream &OS,
646                                      const std::set<ASTNodeKind> &KS) {
647   unsigned Count = 0;
648   for (std::set<ASTNodeKind>::const_iterator I = KS.begin(), E = KS.end();
649        I != E; ++I) {
650     if (I != KS.begin())
651       OS << "|";
652     if (Count++ == 3) {
653       OS << "...";
654       break;
655     }
656     OS << *I;
657   }
658   return OS;
659 }
660 
661 std::vector<ArgKind> Registry::getAcceptedCompletionTypes(
662     ArrayRef<std::pair<MatcherCtor, unsigned>> Context) {
663   ASTNodeKind InitialTypes[] = {
664       ASTNodeKind::getFromNodeKind<Decl>(),
665       ASTNodeKind::getFromNodeKind<QualType>(),
666       ASTNodeKind::getFromNodeKind<Type>(),
667       ASTNodeKind::getFromNodeKind<Stmt>(),
668       ASTNodeKind::getFromNodeKind<NestedNameSpecifier>(),
669       ASTNodeKind::getFromNodeKind<NestedNameSpecifierLoc>(),
670       ASTNodeKind::getFromNodeKind<TypeLoc>()};
671 
672   // Starting with the above seed of acceptable top-level matcher types, compute
673   // the acceptable type set for the argument indicated by each context element.
674   std::set<ArgKind> TypeSet;
675   for (auto IT : InitialTypes) {
676     TypeSet.insert(ArgKind::MakeMatcherArg(IT));
677   }
678   for (const auto &CtxEntry : Context) {
679     MatcherCtor Ctor = CtxEntry.first;
680     unsigned ArgNumber = CtxEntry.second;
681     std::vector<ArgKind> NextTypeSet;
682     for (const ArgKind &Kind : TypeSet) {
683       if (Kind.getArgKind() == Kind.AK_Matcher &&
684           Ctor->isConvertibleTo(Kind.getMatcherKind()) &&
685           (Ctor->isVariadic() || ArgNumber < Ctor->getNumArgs()))
686         Ctor->getArgKinds(Kind.getMatcherKind(), ArgNumber, NextTypeSet);
687     }
688     TypeSet.clear();
689     TypeSet.insert(NextTypeSet.begin(), NextTypeSet.end());
690   }
691   return std::vector<ArgKind>(TypeSet.begin(), TypeSet.end());
692 }
693 
694 std::vector<MatcherCompletion>
695 Registry::getMatcherCompletions(ArrayRef<ArgKind> AcceptedTypes) {
696   std::vector<MatcherCompletion> Completions;
697 
698   // Search the registry for acceptable matchers.
699   for (const auto &M : RegistryData->constructors()) {
700     const MatcherDescriptor& Matcher = *M.getValue();
701     StringRef Name = M.getKey();
702 
703     std::set<ASTNodeKind> RetKinds;
704     unsigned NumArgs = Matcher.isVariadic() ? 1 : Matcher.getNumArgs();
705     bool IsPolymorphic = Matcher.isPolymorphic();
706     std::vector<std::vector<ArgKind>> ArgsKinds(NumArgs);
707     unsigned MaxSpecificity = 0;
708     bool NodeArgs = false;
709     for (const ArgKind& Kind : AcceptedTypes) {
710       if (Kind.getArgKind() != Kind.AK_Matcher &&
711           Kind.getArgKind() != Kind.AK_Node) {
712         continue;
713       }
714 
715       if (Kind.getArgKind() == Kind.AK_Node) {
716         NodeArgs = true;
717         unsigned Specificity;
718         ASTNodeKind LeastDerivedKind;
719         if (Matcher.isConvertibleTo(Kind.getNodeKind(), &Specificity,
720                                     &LeastDerivedKind)) {
721           if (MaxSpecificity < Specificity)
722             MaxSpecificity = Specificity;
723           RetKinds.insert(LeastDerivedKind);
724           for (unsigned Arg = 0; Arg != NumArgs; ++Arg)
725             Matcher.getArgKinds(Kind.getNodeKind(), Arg, ArgsKinds[Arg]);
726           if (IsPolymorphic)
727             break;
728         }
729       } else {
730         unsigned Specificity;
731         ASTNodeKind LeastDerivedKind;
732         if (Matcher.isConvertibleTo(Kind.getMatcherKind(), &Specificity,
733                                     &LeastDerivedKind)) {
734           if (MaxSpecificity < Specificity)
735             MaxSpecificity = Specificity;
736           RetKinds.insert(LeastDerivedKind);
737           for (unsigned Arg = 0; Arg != NumArgs; ++Arg)
738             Matcher.getArgKinds(Kind.getMatcherKind(), Arg, ArgsKinds[Arg]);
739           if (IsPolymorphic)
740             break;
741         }
742       }
743     }
744 
745     if (!RetKinds.empty() && MaxSpecificity > 0) {
746       std::string Decl;
747       llvm::raw_string_ostream OS(Decl);
748 
749       std::string TypedText = std::string(Name);
750 
751       if (NodeArgs) {
752         OS << Name;
753       } else {
754 
755         if (IsPolymorphic) {
756           OS << "Matcher<T> " << Name << "(Matcher<T>";
757         } else {
758           OS << "Matcher<" << RetKinds << "> " << Name << "(";
759           for (const std::vector<ArgKind> &Arg : ArgsKinds) {
760             if (&Arg != &ArgsKinds[0])
761               OS << ", ";
762 
763             bool FirstArgKind = true;
764             std::set<ASTNodeKind> MatcherKinds;
765             // Two steps. First all non-matchers, then matchers only.
766             for (const ArgKind &AK : Arg) {
767               if (AK.getArgKind() == ArgKind::AK_Matcher) {
768                 MatcherKinds.insert(AK.getMatcherKind());
769               } else {
770                 if (!FirstArgKind)
771                   OS << "|";
772                 FirstArgKind = false;
773                 OS << AK.asString();
774               }
775             }
776             if (!MatcherKinds.empty()) {
777               if (!FirstArgKind) OS << "|";
778               OS << "Matcher<" << MatcherKinds << ">";
779             }
780           }
781         }
782         if (Matcher.isVariadic())
783           OS << "...";
784         OS << ")";
785 
786         TypedText += "(";
787         if (ArgsKinds.empty())
788           TypedText += ")";
789         else if (ArgsKinds[0][0].getArgKind() == ArgKind::AK_String)
790           TypedText += "\"";
791       }
792 
793       Completions.emplace_back(TypedText, OS.str(), MaxSpecificity);
794     }
795   }
796 
797   return Completions;
798 }
799 
800 VariantMatcher Registry::constructMatcher(MatcherCtor Ctor,
801                                           SourceRange NameRange,
802                                           ArrayRef<ParserValue> Args,
803                                           Diagnostics *Error) {
804   return Ctor->create(NameRange, Args, Error);
805 }
806 
807 VariantMatcher Registry::constructBoundMatcher(MatcherCtor Ctor,
808                                                SourceRange NameRange,
809                                                StringRef BindID,
810                                                ArrayRef<ParserValue> Args,
811                                                Diagnostics *Error) {
812   VariantMatcher Out = constructMatcher(Ctor, NameRange, Args, Error);
813   if (Out.isNull()) return Out;
814 
815   std::optional<DynTypedMatcher> Result = Out.getSingleMatcher();
816   if (Result) {
817     std::optional<DynTypedMatcher> Bound = Result->tryBind(BindID);
818     if (Bound) {
819       return VariantMatcher::SingleMatcher(*Bound);
820     }
821   }
822   Error->addError(NameRange, Error->ET_RegistryNotBindable);
823   return VariantMatcher();
824 }
825 
826 } // namespace dynamic
827 } // namespace ast_matchers
828 } // namespace clang
829