1 //===--- Registry.cpp - Matcher registry -------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief Registry map populated at static initialization time. 12 /// 13 //===------------------------------------------------------------===// 14 15 #include "clang/ASTMatchers/Dynamic/Registry.h" 16 #include "Marshallers.h" 17 #include "clang/ASTMatchers/ASTMatchers.h" 18 #include "llvm/ADT/STLExtras.h" 19 #include "llvm/ADT/StringMap.h" 20 #include "llvm/ADT/StringRef.h" 21 #include "llvm/Support/ManagedStatic.h" 22 #include <set> 23 #include <utility> 24 25 using namespace clang::ast_type_traits; 26 27 namespace clang { 28 namespace ast_matchers { 29 namespace dynamic { 30 namespace { 31 32 using internal::MatcherDescriptor; 33 34 typedef llvm::StringMap<const MatcherDescriptor *> ConstructorMap; 35 class RegistryMaps { 36 public: 37 RegistryMaps(); 38 ~RegistryMaps(); 39 40 const ConstructorMap &constructors() const { return Constructors; } 41 42 private: 43 void registerMatcher(StringRef MatcherName, MatcherDescriptor *Callback); 44 ConstructorMap Constructors; 45 }; 46 47 void RegistryMaps::registerMatcher(StringRef MatcherName, 48 MatcherDescriptor *Callback) { 49 assert(Constructors.find(MatcherName) == Constructors.end()); 50 Constructors[MatcherName] = Callback; 51 } 52 53 #define REGISTER_MATCHER(name) \ 54 registerMatcher(#name, internal::makeMatcherAutoMarshall( \ 55 ::clang::ast_matchers::name, #name)); 56 57 #define SPECIFIC_MATCHER_OVERLOAD(name, Id) \ 58 static_cast< ::clang::ast_matchers::name##_Type##Id>( \ 59 ::clang::ast_matchers::name) 60 61 #define REGISTER_OVERLOADED_2(name) \ 62 do { \ 63 MatcherDescriptor *Callbacks[] = { \ 64 internal::makeMatcherAutoMarshall(SPECIFIC_MATCHER_OVERLOAD(name, 0), \ 65 #name), \ 66 internal::makeMatcherAutoMarshall(SPECIFIC_MATCHER_OVERLOAD(name, 1), \ 67 #name) \ 68 }; \ 69 registerMatcher(#name, \ 70 new internal::OverloadedMatcherDescriptor(Callbacks)); \ 71 } while (0) 72 73 /// \brief Generate a registry map with all the known matchers. 74 RegistryMaps::RegistryMaps() { 75 // TODO: Here is the list of the missing matchers, grouped by reason. 76 // 77 // Need Variant/Parser fixes: 78 // ofKind 79 // 80 // Polymorphic + argument overload: 81 // findAll 82 // 83 // Other: 84 // equals 85 // equalsNode 86 87 REGISTER_OVERLOADED_2(callee); 88 REGISTER_OVERLOADED_2(hasPrefix); 89 REGISTER_OVERLOADED_2(hasType); 90 REGISTER_OVERLOADED_2(isDerivedFrom); 91 REGISTER_OVERLOADED_2(isSameOrDerivedFrom); 92 REGISTER_OVERLOADED_2(loc); 93 REGISTER_OVERLOADED_2(pointsTo); 94 REGISTER_OVERLOADED_2(references); 95 REGISTER_OVERLOADED_2(thisPointerType); 96 97 REGISTER_MATCHER(accessSpecDecl); 98 REGISTER_MATCHER(addrLabelExpr); 99 REGISTER_MATCHER(alignOfExpr); 100 REGISTER_MATCHER(allOf); 101 REGISTER_MATCHER(anyOf); 102 REGISTER_MATCHER(anything); 103 REGISTER_MATCHER(argumentCountIs); 104 REGISTER_MATCHER(arraySubscriptExpr); 105 REGISTER_MATCHER(arrayType); 106 REGISTER_MATCHER(asmStmt); 107 REGISTER_MATCHER(asString); 108 REGISTER_MATCHER(atomicExpr); 109 REGISTER_MATCHER(atomicType); 110 REGISTER_MATCHER(autoType); 111 REGISTER_MATCHER(binaryOperator); 112 REGISTER_MATCHER(binaryConditionalOperator); 113 REGISTER_MATCHER(blockPointerType); 114 REGISTER_MATCHER(booleanType); 115 REGISTER_MATCHER(breakStmt); 116 REGISTER_MATCHER(builtinType); 117 REGISTER_MATCHER(callExpr); 118 REGISTER_MATCHER(caseStmt); 119 REGISTER_MATCHER(castExpr); 120 REGISTER_MATCHER(characterLiteral); 121 REGISTER_MATCHER(classTemplateDecl); 122 REGISTER_MATCHER(classTemplateSpecializationDecl); 123 REGISTER_MATCHER(complexType); 124 REGISTER_MATCHER(compoundLiteralExpr); 125 REGISTER_MATCHER(compoundStmt); 126 REGISTER_MATCHER(conditionalOperator); 127 REGISTER_MATCHER(constantArrayType); 128 REGISTER_MATCHER(containsDeclaration); 129 REGISTER_MATCHER(continueStmt); 130 REGISTER_MATCHER(cStyleCastExpr); 131 REGISTER_MATCHER(cudaKernelCallExpr); 132 REGISTER_MATCHER(cxxBindTemporaryExpr); 133 REGISTER_MATCHER(cxxBoolLiteral); 134 REGISTER_MATCHER(cxxCatchStmt); 135 REGISTER_MATCHER(cxxConstCastExpr); 136 REGISTER_MATCHER(cxxConstructExpr); 137 REGISTER_MATCHER(cxxConstructorDecl); 138 REGISTER_MATCHER(cxxConversionDecl); 139 REGISTER_MATCHER(cxxCtorInitializer); 140 REGISTER_MATCHER(cxxDefaultArgExpr); 141 REGISTER_MATCHER(cxxDeleteExpr); 142 REGISTER_MATCHER(cxxDestructorDecl); 143 REGISTER_MATCHER(cxxDynamicCastExpr); 144 REGISTER_MATCHER(cxxForRangeStmt); 145 REGISTER_MATCHER(cxxFunctionalCastExpr); 146 REGISTER_MATCHER(cxxMemberCallExpr); 147 REGISTER_MATCHER(cxxMethodDecl); 148 REGISTER_MATCHER(cxxNewExpr); 149 REGISTER_MATCHER(cxxNullPtrLiteralExpr); 150 REGISTER_MATCHER(cxxOperatorCallExpr); 151 REGISTER_MATCHER(cxxRecordDecl); 152 REGISTER_MATCHER(cxxReinterpretCastExpr); 153 REGISTER_MATCHER(cxxStaticCastExpr); 154 REGISTER_MATCHER(cxxTemporaryObjectExpr); 155 REGISTER_MATCHER(cxxThisExpr); 156 REGISTER_MATCHER(cxxThrowExpr); 157 REGISTER_MATCHER(cxxTryStmt); 158 REGISTER_MATCHER(cxxUnresolvedConstructExpr); 159 REGISTER_MATCHER(decayedType); 160 REGISTER_MATCHER(decl); 161 REGISTER_MATCHER(declaratorDecl); 162 REGISTER_MATCHER(declCountIs); 163 REGISTER_MATCHER(declRefExpr); 164 REGISTER_MATCHER(declStmt); 165 REGISTER_MATCHER(defaultStmt); 166 REGISTER_MATCHER(dependentSizedArrayType); 167 REGISTER_MATCHER(designatedInitExpr); 168 REGISTER_MATCHER(designatorCountIs); 169 REGISTER_MATCHER(doStmt); 170 REGISTER_MATCHER(eachOf); 171 REGISTER_MATCHER(elaboratedType); 172 REGISTER_MATCHER(enumConstantDecl); 173 REGISTER_MATCHER(enumDecl); 174 REGISTER_MATCHER(equalsBoundNode); 175 REGISTER_MATCHER(equalsIntegralValue); 176 REGISTER_MATCHER(explicitCastExpr); 177 REGISTER_MATCHER(expr); 178 REGISTER_MATCHER(exprWithCleanups); 179 REGISTER_MATCHER(fieldDecl); 180 REGISTER_MATCHER(floatLiteral); 181 REGISTER_MATCHER(forEach); 182 REGISTER_MATCHER(forEachArgumentWithParam); 183 REGISTER_MATCHER(forEachConstructorInitializer); 184 REGISTER_MATCHER(forEachDescendant); 185 REGISTER_MATCHER(forEachSwitchCase); 186 REGISTER_MATCHER(forField); 187 REGISTER_MATCHER(forStmt); 188 REGISTER_MATCHER(friendDecl); 189 REGISTER_MATCHER(functionDecl); 190 REGISTER_MATCHER(functionProtoType); 191 REGISTER_MATCHER(functionTemplateDecl); 192 REGISTER_MATCHER(functionType); 193 REGISTER_MATCHER(gnuNullExpr); 194 REGISTER_MATCHER(gotoStmt); 195 REGISTER_MATCHER(has); 196 REGISTER_MATCHER(hasAncestor); 197 REGISTER_MATCHER(hasAnyArgument); 198 REGISTER_MATCHER(hasAnyConstructorInitializer); 199 REGISTER_MATCHER(hasAnyName); 200 REGISTER_MATCHER(hasAnyParameter); 201 REGISTER_MATCHER(hasAnySubstatement); 202 REGISTER_MATCHER(hasAnyTemplateArgument); 203 REGISTER_MATCHER(hasAnyUsingShadowDecl); 204 REGISTER_MATCHER(hasArgument); 205 REGISTER_MATCHER(hasArgumentOfType); 206 REGISTER_MATCHER(hasAttr); 207 REGISTER_MATCHER(hasAutomaticStorageDuration); 208 REGISTER_MATCHER(hasBase); 209 REGISTER_MATCHER(hasBody); 210 REGISTER_MATCHER(hasCanonicalType); 211 REGISTER_MATCHER(hasCaseConstant); 212 REGISTER_MATCHER(hasCondition); 213 REGISTER_MATCHER(hasConditionVariableStatement); 214 REGISTER_MATCHER(hasDecayedType); 215 REGISTER_MATCHER(hasDeclaration); 216 REGISTER_MATCHER(hasDeclContext); 217 REGISTER_MATCHER(hasDeducedType); 218 REGISTER_MATCHER(hasDescendant); 219 REGISTER_MATCHER(hasDestinationType); 220 REGISTER_MATCHER(hasEitherOperand); 221 REGISTER_MATCHER(hasElementType); 222 REGISTER_MATCHER(hasElse); 223 REGISTER_MATCHER(hasFalseExpression); 224 REGISTER_MATCHER(hasGlobalStorage); 225 REGISTER_MATCHER(hasImplicitDestinationType); 226 REGISTER_MATCHER(hasIncrement); 227 REGISTER_MATCHER(hasIndex); 228 REGISTER_MATCHER(hasInitializer); 229 REGISTER_MATCHER(hasKeywordSelector); 230 REGISTER_MATCHER(hasLHS); 231 REGISTER_MATCHER(hasLocalQualifiers); 232 REGISTER_MATCHER(hasLocalStorage); 233 REGISTER_MATCHER(hasLoopInit); 234 REGISTER_MATCHER(hasLoopVariable); 235 REGISTER_MATCHER(hasMethod); 236 REGISTER_MATCHER(hasName); 237 REGISTER_MATCHER(hasNullSelector); 238 REGISTER_MATCHER(hasObjectExpression); 239 REGISTER_MATCHER(hasOperatorName); 240 REGISTER_MATCHER(hasOverloadedOperatorName); 241 REGISTER_MATCHER(hasParameter); 242 REGISTER_MATCHER(hasParent); 243 REGISTER_MATCHER(hasQualifier); 244 REGISTER_MATCHER(hasRangeInit); 245 REGISTER_MATCHER(hasReceiverType); 246 REGISTER_MATCHER(hasRHS); 247 REGISTER_MATCHER(hasSelector); 248 REGISTER_MATCHER(hasSingleDecl); 249 REGISTER_MATCHER(hasSize); 250 REGISTER_MATCHER(hasSizeExpr); 251 REGISTER_MATCHER(hasSourceExpression); 252 REGISTER_MATCHER(hasStaticStorageDuration); 253 REGISTER_MATCHER(hasSyntacticForm); 254 REGISTER_MATCHER(hasTargetDecl); 255 REGISTER_MATCHER(hasTemplateArgument); 256 REGISTER_MATCHER(hasThen); 257 REGISTER_MATCHER(hasThreadStorageDuration); 258 REGISTER_MATCHER(hasTrueExpression); 259 REGISTER_MATCHER(hasTypeLoc); 260 REGISTER_MATCHER(hasUnaryOperand); 261 REGISTER_MATCHER(hasUnarySelector); 262 REGISTER_MATCHER(hasValueType); 263 REGISTER_MATCHER(ifStmt); 264 REGISTER_MATCHER(ignoringImpCasts); 265 REGISTER_MATCHER(ignoringParenCasts); 266 REGISTER_MATCHER(ignoringParenImpCasts); 267 REGISTER_MATCHER(implicitCastExpr); 268 REGISTER_MATCHER(implicitValueInitExpr); 269 REGISTER_MATCHER(incompleteArrayType); 270 REGISTER_MATCHER(initListExpr); 271 REGISTER_MATCHER(injectedClassNameType); 272 REGISTER_MATCHER(innerType); 273 REGISTER_MATCHER(integerLiteral); 274 REGISTER_MATCHER(isAnonymous); 275 REGISTER_MATCHER(isAnyCharacter); 276 REGISTER_MATCHER(isAnyPointer); 277 REGISTER_MATCHER(isArrow); 278 REGISTER_MATCHER(isBaseInitializer); 279 REGISTER_MATCHER(isCatchAll); 280 REGISTER_MATCHER(isClass); 281 REGISTER_MATCHER(isConst); 282 REGISTER_MATCHER(isConstQualified); 283 REGISTER_MATCHER(isCopyAssignmentOperator); 284 REGISTER_MATCHER(isCopyConstructor); 285 REGISTER_MATCHER(isDefaultConstructor); 286 REGISTER_MATCHER(isDefaulted); 287 REGISTER_MATCHER(isDefinition); 288 REGISTER_MATCHER(isDeleted); 289 REGISTER_MATCHER(isExceptionVariable); 290 REGISTER_MATCHER(isExplicit); 291 REGISTER_MATCHER(isExplicitTemplateSpecialization); 292 REGISTER_MATCHER(isExpr); 293 REGISTER_MATCHER(isExternC); 294 REGISTER_MATCHER(isFinal); 295 REGISTER_MATCHER(isInline); 296 REGISTER_MATCHER(isImplicit); 297 REGISTER_MATCHER(isExpansionInFileMatching); 298 REGISTER_MATCHER(isExpansionInMainFile); 299 REGISTER_MATCHER(isInstantiated); 300 REGISTER_MATCHER(isExpansionInSystemHeader); 301 REGISTER_MATCHER(isInteger); 302 REGISTER_MATCHER(isIntegral); 303 REGISTER_MATCHER(isInTemplateInstantiation); 304 REGISTER_MATCHER(isListInitialization); 305 REGISTER_MATCHER(isMemberInitializer); 306 REGISTER_MATCHER(isMoveAssignmentOperator); 307 REGISTER_MATCHER(isMoveConstructor); 308 REGISTER_MATCHER(isNoThrow); 309 REGISTER_MATCHER(isOverride); 310 REGISTER_MATCHER(isPrivate); 311 REGISTER_MATCHER(isProtected); 312 REGISTER_MATCHER(isPublic); 313 REGISTER_MATCHER(isPure); 314 REGISTER_MATCHER(isStruct); 315 REGISTER_MATCHER(isTemplateInstantiation); 316 REGISTER_MATCHER(isUnion); 317 REGISTER_MATCHER(isVariadic); 318 REGISTER_MATCHER(isVirtual); 319 REGISTER_MATCHER(isVirtualAsWritten); 320 REGISTER_MATCHER(isVolatileQualified); 321 REGISTER_MATCHER(isWritten); 322 REGISTER_MATCHER(labelDecl); 323 REGISTER_MATCHER(labelStmt); 324 REGISTER_MATCHER(lambdaExpr); 325 REGISTER_MATCHER(lValueReferenceType); 326 REGISTER_MATCHER(matchesName); 327 REGISTER_MATCHER(matchesSelector); 328 REGISTER_MATCHER(materializeTemporaryExpr); 329 REGISTER_MATCHER(member); 330 REGISTER_MATCHER(memberExpr); 331 REGISTER_MATCHER(memberPointerType); 332 REGISTER_MATCHER(namedDecl); 333 REGISTER_MATCHER(namespaceAliasDecl); 334 REGISTER_MATCHER(namespaceDecl); 335 REGISTER_MATCHER(namesType); 336 REGISTER_MATCHER(nestedNameSpecifier); 337 REGISTER_MATCHER(nestedNameSpecifierLoc); 338 REGISTER_MATCHER(nullPointerConstant); 339 REGISTER_MATCHER(nullStmt); 340 REGISTER_MATCHER(numSelectorArgs); 341 REGISTER_MATCHER(ofClass); 342 REGISTER_MATCHER(objcInterfaceDecl); 343 REGISTER_MATCHER(objcMessageExpr); 344 REGISTER_MATCHER(objcObjectPointerType); 345 REGISTER_MATCHER(on); 346 REGISTER_MATCHER(onImplicitObjectArgument); 347 REGISTER_MATCHER(opaqueValueExpr); 348 REGISTER_MATCHER(parameterCountIs); 349 REGISTER_MATCHER(parenExpr); 350 REGISTER_MATCHER(parenListExpr); 351 REGISTER_MATCHER(parenType); 352 REGISTER_MATCHER(parmVarDecl); 353 REGISTER_MATCHER(pointee); 354 REGISTER_MATCHER(pointerType); 355 REGISTER_MATCHER(predefinedExpr); 356 REGISTER_MATCHER(qualType); 357 REGISTER_MATCHER(realFloatingPointType); 358 REGISTER_MATCHER(recordDecl); 359 REGISTER_MATCHER(recordType); 360 REGISTER_MATCHER(referenceType); 361 REGISTER_MATCHER(refersToDeclaration); 362 REGISTER_MATCHER(refersToIntegralType); 363 REGISTER_MATCHER(refersToType); 364 REGISTER_MATCHER(requiresZeroInitialization); 365 REGISTER_MATCHER(returns); 366 REGISTER_MATCHER(returnStmt); 367 REGISTER_MATCHER(rValueReferenceType); 368 REGISTER_MATCHER(sizeOfExpr); 369 REGISTER_MATCHER(specifiesNamespace); 370 REGISTER_MATCHER(specifiesType); 371 REGISTER_MATCHER(specifiesTypeLoc); 372 REGISTER_MATCHER(statementCountIs); 373 REGISTER_MATCHER(staticAssertDecl); 374 REGISTER_MATCHER(stmt); 375 REGISTER_MATCHER(stmtExpr); 376 REGISTER_MATCHER(stringLiteral); 377 REGISTER_MATCHER(substNonTypeTemplateParmExpr); 378 REGISTER_MATCHER(substTemplateTypeParmType); 379 REGISTER_MATCHER(switchCase); 380 REGISTER_MATCHER(switchStmt); 381 REGISTER_MATCHER(templateArgument); 382 REGISTER_MATCHER(templateArgumentCountIs); 383 REGISTER_MATCHER(templateSpecializationType); 384 REGISTER_MATCHER(templateTypeParmType); 385 REGISTER_MATCHER(throughUsingDecl); 386 REGISTER_MATCHER(to); 387 REGISTER_MATCHER(translationUnitDecl); 388 REGISTER_MATCHER(type); 389 REGISTER_MATCHER(typedefDecl); 390 REGISTER_MATCHER(typedefType); 391 REGISTER_MATCHER(typeLoc); 392 REGISTER_MATCHER(unaryExprOrTypeTraitExpr); 393 REGISTER_MATCHER(unaryOperator); 394 REGISTER_MATCHER(unaryTransformType); 395 REGISTER_MATCHER(unless); 396 REGISTER_MATCHER(unresolvedUsingTypenameDecl); 397 REGISTER_MATCHER(unresolvedUsingValueDecl); 398 REGISTER_MATCHER(userDefinedLiteral); 399 REGISTER_MATCHER(usingDecl); 400 REGISTER_MATCHER(usingDirectiveDecl); 401 REGISTER_MATCHER(valueDecl); 402 REGISTER_MATCHER(varDecl); 403 REGISTER_MATCHER(variableArrayType); 404 REGISTER_MATCHER(voidType); 405 REGISTER_MATCHER(whileStmt); 406 REGISTER_MATCHER(withInitializer); 407 } 408 409 RegistryMaps::~RegistryMaps() { 410 llvm::DeleteContainerSeconds(Constructors); 411 } 412 413 static llvm::ManagedStatic<RegistryMaps> RegistryData; 414 415 } // anonymous namespace 416 417 // static 418 llvm::Optional<MatcherCtor> Registry::lookupMatcherCtor(StringRef MatcherName) { 419 ConstructorMap::const_iterator it = 420 RegistryData->constructors().find(MatcherName); 421 return it == RegistryData->constructors().end() 422 ? llvm::Optional<MatcherCtor>() 423 : it->second; 424 } 425 426 namespace { 427 428 llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, 429 const std::set<ASTNodeKind> &KS) { 430 unsigned Count = 0; 431 for (std::set<ASTNodeKind>::const_iterator I = KS.begin(), E = KS.end(); 432 I != E; ++I) { 433 if (I != KS.begin()) 434 OS << "|"; 435 if (Count++ == 3) { 436 OS << "..."; 437 break; 438 } 439 OS << *I; 440 } 441 return OS; 442 } 443 444 } // namespace 445 446 std::vector<ArgKind> Registry::getAcceptedCompletionTypes( 447 ArrayRef<std::pair<MatcherCtor, unsigned>> Context) { 448 ASTNodeKind InitialTypes[] = { 449 ASTNodeKind::getFromNodeKind<Decl>(), 450 ASTNodeKind::getFromNodeKind<QualType>(), 451 ASTNodeKind::getFromNodeKind<Type>(), 452 ASTNodeKind::getFromNodeKind<Stmt>(), 453 ASTNodeKind::getFromNodeKind<NestedNameSpecifier>(), 454 ASTNodeKind::getFromNodeKind<NestedNameSpecifierLoc>(), 455 ASTNodeKind::getFromNodeKind<TypeLoc>()}; 456 457 // Starting with the above seed of acceptable top-level matcher types, compute 458 // the acceptable type set for the argument indicated by each context element. 459 std::set<ArgKind> TypeSet(std::begin(InitialTypes), std::end(InitialTypes)); 460 for (const auto &CtxEntry : Context) { 461 MatcherCtor Ctor = CtxEntry.first; 462 unsigned ArgNumber = CtxEntry.second; 463 std::vector<ArgKind> NextTypeSet; 464 for (const ArgKind &Kind : TypeSet) { 465 if (Kind.getArgKind() == Kind.AK_Matcher && 466 Ctor->isConvertibleTo(Kind.getMatcherKind()) && 467 (Ctor->isVariadic() || ArgNumber < Ctor->getNumArgs())) 468 Ctor->getArgKinds(Kind.getMatcherKind(), ArgNumber, NextTypeSet); 469 } 470 TypeSet.clear(); 471 TypeSet.insert(NextTypeSet.begin(), NextTypeSet.end()); 472 } 473 return std::vector<ArgKind>(TypeSet.begin(), TypeSet.end()); 474 } 475 476 std::vector<MatcherCompletion> 477 Registry::getMatcherCompletions(ArrayRef<ArgKind> AcceptedTypes) { 478 std::vector<MatcherCompletion> Completions; 479 480 // Search the registry for acceptable matchers. 481 for (const auto &M : RegistryData->constructors()) { 482 const auto *Matcher = M.getValue(); 483 StringRef Name = M.getKey(); 484 485 std::set<ASTNodeKind> RetKinds; 486 unsigned NumArgs = Matcher->isVariadic() ? 1 : Matcher->getNumArgs(); 487 bool IsPolymorphic = Matcher->isPolymorphic(); 488 std::vector<std::vector<ArgKind>> ArgsKinds(NumArgs); 489 unsigned MaxSpecificity = 0; 490 for (const ArgKind& Kind : AcceptedTypes) { 491 if (Kind.getArgKind() != Kind.AK_Matcher) 492 continue; 493 unsigned Specificity; 494 ASTNodeKind LeastDerivedKind; 495 if (Matcher->isConvertibleTo(Kind.getMatcherKind(), &Specificity, 496 &LeastDerivedKind)) { 497 if (MaxSpecificity < Specificity) 498 MaxSpecificity = Specificity; 499 RetKinds.insert(LeastDerivedKind); 500 for (unsigned Arg = 0; Arg != NumArgs; ++Arg) 501 Matcher->getArgKinds(Kind.getMatcherKind(), Arg, ArgsKinds[Arg]); 502 if (IsPolymorphic) 503 break; 504 } 505 } 506 507 if (!RetKinds.empty() && MaxSpecificity > 0) { 508 std::string Decl; 509 llvm::raw_string_ostream OS(Decl); 510 511 if (IsPolymorphic) { 512 OS << "Matcher<T> " << Name << "(Matcher<T>"; 513 } else { 514 OS << "Matcher<" << RetKinds << "> " << Name << "("; 515 for (const std::vector<ArgKind> &Arg : ArgsKinds) { 516 if (&Arg != &ArgsKinds[0]) 517 OS << ", "; 518 519 bool FirstArgKind = true; 520 std::set<ASTNodeKind> MatcherKinds; 521 // Two steps. First all non-matchers, then matchers only. 522 for (const ArgKind &AK : Arg) { 523 if (AK.getArgKind() == ArgKind::AK_Matcher) { 524 MatcherKinds.insert(AK.getMatcherKind()); 525 } else { 526 if (!FirstArgKind) OS << "|"; 527 FirstArgKind = false; 528 OS << AK.asString(); 529 } 530 } 531 if (!MatcherKinds.empty()) { 532 if (!FirstArgKind) OS << "|"; 533 OS << "Matcher<" << MatcherKinds << ">"; 534 } 535 } 536 } 537 if (Matcher->isVariadic()) 538 OS << "..."; 539 OS << ")"; 540 541 std::string TypedText = Name; 542 TypedText += "("; 543 if (ArgsKinds.empty()) 544 TypedText += ")"; 545 else if (ArgsKinds[0][0].getArgKind() == ArgKind::AK_String) 546 TypedText += "\""; 547 548 Completions.emplace_back(TypedText, OS.str(), MaxSpecificity); 549 } 550 } 551 552 return Completions; 553 } 554 555 // static 556 VariantMatcher Registry::constructMatcher(MatcherCtor Ctor, 557 SourceRange NameRange, 558 ArrayRef<ParserValue> Args, 559 Diagnostics *Error) { 560 return Ctor->create(NameRange, Args, Error); 561 } 562 563 // static 564 VariantMatcher Registry::constructBoundMatcher(MatcherCtor Ctor, 565 SourceRange NameRange, 566 StringRef BindID, 567 ArrayRef<ParserValue> Args, 568 Diagnostics *Error) { 569 VariantMatcher Out = constructMatcher(Ctor, NameRange, Args, Error); 570 if (Out.isNull()) return Out; 571 572 llvm::Optional<DynTypedMatcher> Result = Out.getSingleMatcher(); 573 if (Result.hasValue()) { 574 llvm::Optional<DynTypedMatcher> Bound = Result->tryBind(BindID); 575 if (Bound.hasValue()) { 576 return VariantMatcher::SingleMatcher(*Bound); 577 } 578 } 579 Error->addError(NameRange, Error->ET_RegistryNotBindable); 580 return VariantMatcher(); 581 } 582 583 } // namespace dynamic 584 } // namespace ast_matchers 585 } // namespace clang 586