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(enumType); 175 REGISTER_MATCHER(equalsBoundNode); 176 REGISTER_MATCHER(equalsIntegralValue); 177 REGISTER_MATCHER(explicitCastExpr); 178 REGISTER_MATCHER(expr); 179 REGISTER_MATCHER(exprWithCleanups); 180 REGISTER_MATCHER(fieldDecl); 181 REGISTER_MATCHER(floatLiteral); 182 REGISTER_MATCHER(forEach); 183 REGISTER_MATCHER(forEachArgumentWithParam); 184 REGISTER_MATCHER(forEachConstructorInitializer); 185 REGISTER_MATCHER(forEachDescendant); 186 REGISTER_MATCHER(forEachSwitchCase); 187 REGISTER_MATCHER(forField); 188 REGISTER_MATCHER(forFunction); 189 REGISTER_MATCHER(forStmt); 190 REGISTER_MATCHER(friendDecl); 191 REGISTER_MATCHER(functionDecl); 192 REGISTER_MATCHER(functionProtoType); 193 REGISTER_MATCHER(functionTemplateDecl); 194 REGISTER_MATCHER(functionType); 195 REGISTER_MATCHER(gnuNullExpr); 196 REGISTER_MATCHER(gotoStmt); 197 REGISTER_MATCHER(has); 198 REGISTER_MATCHER(hasAncestor); 199 REGISTER_MATCHER(hasAnyArgument); 200 REGISTER_MATCHER(hasAnyConstructorInitializer); 201 REGISTER_MATCHER(hasAnyName); 202 REGISTER_MATCHER(hasAnyParameter); 203 REGISTER_MATCHER(hasAnySubstatement); 204 REGISTER_MATCHER(hasAnyTemplateArgument); 205 REGISTER_MATCHER(hasAnyUsingShadowDecl); 206 REGISTER_MATCHER(hasArgument); 207 REGISTER_MATCHER(hasArgumentOfType); 208 REGISTER_MATCHER(hasAttr); 209 REGISTER_MATCHER(hasAutomaticStorageDuration); 210 REGISTER_MATCHER(hasBase); 211 REGISTER_MATCHER(hasBitWidth); 212 REGISTER_MATCHER(hasBody); 213 REGISTER_MATCHER(hasCanonicalType); 214 REGISTER_MATCHER(hasCaseConstant); 215 REGISTER_MATCHER(hasCastKind); 216 REGISTER_MATCHER(hasCondition); 217 REGISTER_MATCHER(hasConditionVariableStatement); 218 REGISTER_MATCHER(hasDecayedType); 219 REGISTER_MATCHER(hasDeclaration); 220 REGISTER_MATCHER(hasDeclContext); 221 REGISTER_MATCHER(hasDeducedType); 222 REGISTER_MATCHER(hasDescendant); 223 REGISTER_MATCHER(hasDestinationType); 224 REGISTER_MATCHER(hasDynamicExceptionSpec); 225 REGISTER_MATCHER(hasEitherOperand); 226 REGISTER_MATCHER(hasElementType); 227 REGISTER_MATCHER(hasElse); 228 REGISTER_MATCHER(hasFalseExpression); 229 REGISTER_MATCHER(hasGlobalStorage); 230 REGISTER_MATCHER(hasImplicitDestinationType); 231 REGISTER_MATCHER(hasIncrement); 232 REGISTER_MATCHER(hasIndex); 233 REGISTER_MATCHER(hasInitializer); 234 REGISTER_MATCHER(hasKeywordSelector); 235 REGISTER_MATCHER(hasLHS); 236 REGISTER_MATCHER(hasLocalQualifiers); 237 REGISTER_MATCHER(hasLocalStorage); 238 REGISTER_MATCHER(hasLoopInit); 239 REGISTER_MATCHER(hasLoopVariable); 240 REGISTER_MATCHER(hasMethod); 241 REGISTER_MATCHER(hasName); 242 REGISTER_MATCHER(hasNullSelector); 243 REGISTER_MATCHER(hasObjectExpression); 244 REGISTER_MATCHER(hasOperatorName); 245 REGISTER_MATCHER(hasOverloadedOperatorName); 246 REGISTER_MATCHER(hasParameter); 247 REGISTER_MATCHER(hasParent); 248 REGISTER_MATCHER(hasQualifier); 249 REGISTER_MATCHER(hasRangeInit); 250 REGISTER_MATCHER(hasReceiverType); 251 REGISTER_MATCHER(hasReturnValue); 252 REGISTER_MATCHER(hasRHS); 253 REGISTER_MATCHER(hasSelector); 254 REGISTER_MATCHER(hasSingleDecl); 255 REGISTER_MATCHER(hasSize); 256 REGISTER_MATCHER(hasSizeExpr); 257 REGISTER_MATCHER(hasSourceExpression); 258 REGISTER_MATCHER(hasStaticStorageDuration); 259 REGISTER_MATCHER(hasSyntacticForm); 260 REGISTER_MATCHER(hasTargetDecl); 261 REGISTER_MATCHER(hasTemplateArgument); 262 REGISTER_MATCHER(hasThen); 263 REGISTER_MATCHER(hasThreadStorageDuration); 264 REGISTER_MATCHER(hasTrueExpression); 265 REGISTER_MATCHER(hasTypeLoc); 266 REGISTER_MATCHER(hasUnaryOperand); 267 REGISTER_MATCHER(hasUnarySelector); 268 REGISTER_MATCHER(hasValueType); 269 REGISTER_MATCHER(ifStmt); 270 REGISTER_MATCHER(ignoringImplicit); 271 REGISTER_MATCHER(ignoringImpCasts); 272 REGISTER_MATCHER(ignoringParenCasts); 273 REGISTER_MATCHER(ignoringParenImpCasts); 274 REGISTER_MATCHER(ignoringParens); 275 REGISTER_MATCHER(implicitCastExpr); 276 REGISTER_MATCHER(implicitValueInitExpr); 277 REGISTER_MATCHER(incompleteArrayType); 278 REGISTER_MATCHER(initListExpr); 279 REGISTER_MATCHER(injectedClassNameType); 280 REGISTER_MATCHER(innerType); 281 REGISTER_MATCHER(integerLiteral); 282 REGISTER_MATCHER(isAnonymous); 283 REGISTER_MATCHER(isAnyCharacter); 284 REGISTER_MATCHER(isAnyPointer); 285 REGISTER_MATCHER(isArrow); 286 REGISTER_MATCHER(isBaseInitializer); 287 REGISTER_MATCHER(isBitField); 288 REGISTER_MATCHER(isCatchAll); 289 REGISTER_MATCHER(isClass); 290 REGISTER_MATCHER(isConst); 291 REGISTER_MATCHER(isConstQualified); 292 REGISTER_MATCHER(isCopyAssignmentOperator); 293 REGISTER_MATCHER(isCopyConstructor); 294 REGISTER_MATCHER(isDefaultConstructor); 295 REGISTER_MATCHER(isDefaulted); 296 REGISTER_MATCHER(isDefinition); 297 REGISTER_MATCHER(isDeleted); 298 REGISTER_MATCHER(isExceptionVariable); 299 REGISTER_MATCHER(isExplicit); 300 REGISTER_MATCHER(isExplicitTemplateSpecialization); 301 REGISTER_MATCHER(isExpr); 302 REGISTER_MATCHER(isExternC); 303 REGISTER_MATCHER(isFinal); 304 REGISTER_MATCHER(isInline); 305 REGISTER_MATCHER(isImplicit); 306 REGISTER_MATCHER(isExpansionInFileMatching); 307 REGISTER_MATCHER(isExpansionInMainFile); 308 REGISTER_MATCHER(isInstantiated); 309 REGISTER_MATCHER(isExpansionInSystemHeader); 310 REGISTER_MATCHER(isInteger); 311 REGISTER_MATCHER(isIntegral); 312 REGISTER_MATCHER(isInTemplateInstantiation); 313 REGISTER_MATCHER(isLambda); 314 REGISTER_MATCHER(isListInitialization); 315 REGISTER_MATCHER(isMemberInitializer); 316 REGISTER_MATCHER(isMoveAssignmentOperator); 317 REGISTER_MATCHER(isMoveConstructor); 318 REGISTER_MATCHER(isNoThrow); 319 REGISTER_MATCHER(isOverride); 320 REGISTER_MATCHER(isPrivate); 321 REGISTER_MATCHER(isProtected); 322 REGISTER_MATCHER(isPublic); 323 REGISTER_MATCHER(isPure); 324 REGISTER_MATCHER(isSignedInteger); 325 REGISTER_MATCHER(isStruct); 326 REGISTER_MATCHER(isTemplateInstantiation); 327 REGISTER_MATCHER(isUnion); 328 REGISTER_MATCHER(isUnsignedInteger); 329 REGISTER_MATCHER(isVariadic); 330 REGISTER_MATCHER(isVirtual); 331 REGISTER_MATCHER(isVirtualAsWritten); 332 REGISTER_MATCHER(isVolatileQualified); 333 REGISTER_MATCHER(isWritten); 334 REGISTER_MATCHER(labelDecl); 335 REGISTER_MATCHER(labelStmt); 336 REGISTER_MATCHER(lambdaExpr); 337 REGISTER_MATCHER(lValueReferenceType); 338 REGISTER_MATCHER(matchesName); 339 REGISTER_MATCHER(matchesSelector); 340 REGISTER_MATCHER(materializeTemporaryExpr); 341 REGISTER_MATCHER(member); 342 REGISTER_MATCHER(memberExpr); 343 REGISTER_MATCHER(memberPointerType); 344 REGISTER_MATCHER(namedDecl); 345 REGISTER_MATCHER(namespaceAliasDecl); 346 REGISTER_MATCHER(namespaceDecl); 347 REGISTER_MATCHER(namesType); 348 REGISTER_MATCHER(nestedNameSpecifier); 349 REGISTER_MATCHER(nestedNameSpecifierLoc); 350 REGISTER_MATCHER(nullPointerConstant); 351 REGISTER_MATCHER(nullStmt); 352 REGISTER_MATCHER(numSelectorArgs); 353 REGISTER_MATCHER(ofClass); 354 REGISTER_MATCHER(objcInterfaceDecl); 355 REGISTER_MATCHER(objcMessageExpr); 356 REGISTER_MATCHER(objcObjectPointerType); 357 REGISTER_MATCHER(on); 358 REGISTER_MATCHER(onImplicitObjectArgument); 359 REGISTER_MATCHER(opaqueValueExpr); 360 REGISTER_MATCHER(parameterCountIs); 361 REGISTER_MATCHER(parenExpr); 362 REGISTER_MATCHER(parenListExpr); 363 REGISTER_MATCHER(parenType); 364 REGISTER_MATCHER(parmVarDecl); 365 REGISTER_MATCHER(pointee); 366 REGISTER_MATCHER(pointerType); 367 REGISTER_MATCHER(predefinedExpr); 368 REGISTER_MATCHER(qualType); 369 REGISTER_MATCHER(realFloatingPointType); 370 REGISTER_MATCHER(recordDecl); 371 REGISTER_MATCHER(recordType); 372 REGISTER_MATCHER(referenceType); 373 REGISTER_MATCHER(refersToDeclaration); 374 REGISTER_MATCHER(refersToIntegralType); 375 REGISTER_MATCHER(refersToType); 376 REGISTER_MATCHER(requiresZeroInitialization); 377 REGISTER_MATCHER(returns); 378 REGISTER_MATCHER(returnStmt); 379 REGISTER_MATCHER(rValueReferenceType); 380 REGISTER_MATCHER(sizeOfExpr); 381 REGISTER_MATCHER(specifiesNamespace); 382 REGISTER_MATCHER(specifiesType); 383 REGISTER_MATCHER(specifiesTypeLoc); 384 REGISTER_MATCHER(statementCountIs); 385 REGISTER_MATCHER(staticAssertDecl); 386 REGISTER_MATCHER(stmt); 387 REGISTER_MATCHER(stmtExpr); 388 REGISTER_MATCHER(stringLiteral); 389 REGISTER_MATCHER(substNonTypeTemplateParmExpr); 390 REGISTER_MATCHER(substTemplateTypeParmType); 391 REGISTER_MATCHER(switchCase); 392 REGISTER_MATCHER(switchStmt); 393 REGISTER_MATCHER(templateArgument); 394 REGISTER_MATCHER(templateArgumentCountIs); 395 REGISTER_MATCHER(templateSpecializationType); 396 REGISTER_MATCHER(templateTypeParmType); 397 REGISTER_MATCHER(throughUsingDecl); 398 REGISTER_MATCHER(to); 399 REGISTER_MATCHER(translationUnitDecl); 400 REGISTER_MATCHER(type); 401 REGISTER_MATCHER(typedefDecl); 402 REGISTER_MATCHER(typedefNameDecl); 403 REGISTER_MATCHER(typedefType); 404 REGISTER_MATCHER(typeAliasDecl); 405 REGISTER_MATCHER(typeLoc); 406 REGISTER_MATCHER(unaryExprOrTypeTraitExpr); 407 REGISTER_MATCHER(unaryOperator); 408 REGISTER_MATCHER(unaryTransformType); 409 REGISTER_MATCHER(unless); 410 REGISTER_MATCHER(unresolvedLookupExpr); 411 REGISTER_MATCHER(unresolvedUsingTypenameDecl); 412 REGISTER_MATCHER(unresolvedUsingValueDecl); 413 REGISTER_MATCHER(userDefinedLiteral); 414 REGISTER_MATCHER(usingDecl); 415 REGISTER_MATCHER(usingDirectiveDecl); 416 REGISTER_MATCHER(valueDecl); 417 REGISTER_MATCHER(varDecl); 418 REGISTER_MATCHER(variableArrayType); 419 REGISTER_MATCHER(voidType); 420 REGISTER_MATCHER(whileStmt); 421 REGISTER_MATCHER(withInitializer); 422 } 423 424 RegistryMaps::~RegistryMaps() { 425 llvm::DeleteContainerSeconds(Constructors); 426 } 427 428 static llvm::ManagedStatic<RegistryMaps> RegistryData; 429 430 } // anonymous namespace 431 432 // static 433 llvm::Optional<MatcherCtor> Registry::lookupMatcherCtor(StringRef MatcherName) { 434 ConstructorMap::const_iterator it = 435 RegistryData->constructors().find(MatcherName); 436 return it == RegistryData->constructors().end() 437 ? llvm::Optional<MatcherCtor>() 438 : it->second; 439 } 440 441 namespace { 442 443 llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, 444 const std::set<ASTNodeKind> &KS) { 445 unsigned Count = 0; 446 for (std::set<ASTNodeKind>::const_iterator I = KS.begin(), E = KS.end(); 447 I != E; ++I) { 448 if (I != KS.begin()) 449 OS << "|"; 450 if (Count++ == 3) { 451 OS << "..."; 452 break; 453 } 454 OS << *I; 455 } 456 return OS; 457 } 458 459 } // namespace 460 461 std::vector<ArgKind> Registry::getAcceptedCompletionTypes( 462 ArrayRef<std::pair<MatcherCtor, unsigned>> Context) { 463 ASTNodeKind InitialTypes[] = { 464 ASTNodeKind::getFromNodeKind<Decl>(), 465 ASTNodeKind::getFromNodeKind<QualType>(), 466 ASTNodeKind::getFromNodeKind<Type>(), 467 ASTNodeKind::getFromNodeKind<Stmt>(), 468 ASTNodeKind::getFromNodeKind<NestedNameSpecifier>(), 469 ASTNodeKind::getFromNodeKind<NestedNameSpecifierLoc>(), 470 ASTNodeKind::getFromNodeKind<TypeLoc>()}; 471 472 // Starting with the above seed of acceptable top-level matcher types, compute 473 // the acceptable type set for the argument indicated by each context element. 474 std::set<ArgKind> TypeSet(std::begin(InitialTypes), std::end(InitialTypes)); 475 for (const auto &CtxEntry : Context) { 476 MatcherCtor Ctor = CtxEntry.first; 477 unsigned ArgNumber = CtxEntry.second; 478 std::vector<ArgKind> NextTypeSet; 479 for (const ArgKind &Kind : TypeSet) { 480 if (Kind.getArgKind() == Kind.AK_Matcher && 481 Ctor->isConvertibleTo(Kind.getMatcherKind()) && 482 (Ctor->isVariadic() || ArgNumber < Ctor->getNumArgs())) 483 Ctor->getArgKinds(Kind.getMatcherKind(), ArgNumber, NextTypeSet); 484 } 485 TypeSet.clear(); 486 TypeSet.insert(NextTypeSet.begin(), NextTypeSet.end()); 487 } 488 return std::vector<ArgKind>(TypeSet.begin(), TypeSet.end()); 489 } 490 491 std::vector<MatcherCompletion> 492 Registry::getMatcherCompletions(ArrayRef<ArgKind> AcceptedTypes) { 493 std::vector<MatcherCompletion> Completions; 494 495 // Search the registry for acceptable matchers. 496 for (const auto &M : RegistryData->constructors()) { 497 const auto *Matcher = M.getValue(); 498 StringRef Name = M.getKey(); 499 500 std::set<ASTNodeKind> RetKinds; 501 unsigned NumArgs = Matcher->isVariadic() ? 1 : Matcher->getNumArgs(); 502 bool IsPolymorphic = Matcher->isPolymorphic(); 503 std::vector<std::vector<ArgKind>> ArgsKinds(NumArgs); 504 unsigned MaxSpecificity = 0; 505 for (const ArgKind& Kind : AcceptedTypes) { 506 if (Kind.getArgKind() != Kind.AK_Matcher) 507 continue; 508 unsigned Specificity; 509 ASTNodeKind LeastDerivedKind; 510 if (Matcher->isConvertibleTo(Kind.getMatcherKind(), &Specificity, 511 &LeastDerivedKind)) { 512 if (MaxSpecificity < Specificity) 513 MaxSpecificity = Specificity; 514 RetKinds.insert(LeastDerivedKind); 515 for (unsigned Arg = 0; Arg != NumArgs; ++Arg) 516 Matcher->getArgKinds(Kind.getMatcherKind(), Arg, ArgsKinds[Arg]); 517 if (IsPolymorphic) 518 break; 519 } 520 } 521 522 if (!RetKinds.empty() && MaxSpecificity > 0) { 523 std::string Decl; 524 llvm::raw_string_ostream OS(Decl); 525 526 if (IsPolymorphic) { 527 OS << "Matcher<T> " << Name << "(Matcher<T>"; 528 } else { 529 OS << "Matcher<" << RetKinds << "> " << Name << "("; 530 for (const std::vector<ArgKind> &Arg : ArgsKinds) { 531 if (&Arg != &ArgsKinds[0]) 532 OS << ", "; 533 534 bool FirstArgKind = true; 535 std::set<ASTNodeKind> MatcherKinds; 536 // Two steps. First all non-matchers, then matchers only. 537 for (const ArgKind &AK : Arg) { 538 if (AK.getArgKind() == ArgKind::AK_Matcher) { 539 MatcherKinds.insert(AK.getMatcherKind()); 540 } else { 541 if (!FirstArgKind) OS << "|"; 542 FirstArgKind = false; 543 OS << AK.asString(); 544 } 545 } 546 if (!MatcherKinds.empty()) { 547 if (!FirstArgKind) OS << "|"; 548 OS << "Matcher<" << MatcherKinds << ">"; 549 } 550 } 551 } 552 if (Matcher->isVariadic()) 553 OS << "..."; 554 OS << ")"; 555 556 std::string TypedText = Name; 557 TypedText += "("; 558 if (ArgsKinds.empty()) 559 TypedText += ")"; 560 else if (ArgsKinds[0][0].getArgKind() == ArgKind::AK_String) 561 TypedText += "\""; 562 563 Completions.emplace_back(TypedText, OS.str(), MaxSpecificity); 564 } 565 } 566 567 return Completions; 568 } 569 570 // static 571 VariantMatcher Registry::constructMatcher(MatcherCtor Ctor, 572 SourceRange NameRange, 573 ArrayRef<ParserValue> Args, 574 Diagnostics *Error) { 575 return Ctor->create(NameRange, Args, Error); 576 } 577 578 // static 579 VariantMatcher Registry::constructBoundMatcher(MatcherCtor Ctor, 580 SourceRange NameRange, 581 StringRef BindID, 582 ArrayRef<ParserValue> Args, 583 Diagnostics *Error) { 584 VariantMatcher Out = constructMatcher(Ctor, NameRange, Args, Error); 585 if (Out.isNull()) return Out; 586 587 llvm::Optional<DynTypedMatcher> Result = Out.getSingleMatcher(); 588 if (Result.hasValue()) { 589 llvm::Optional<DynTypedMatcher> Bound = Result->tryBind(BindID); 590 if (Bound.hasValue()) { 591 return VariantMatcher::SingleMatcher(*Bound); 592 } 593 } 594 Error->addError(NameRange, Error->ET_RegistryNotBindable); 595 return VariantMatcher(); 596 } 597 598 } // namespace dynamic 599 } // namespace ast_matchers 600 } // namespace clang 601
