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