612 lines · cpp
1//===--- IndexSymbol.cpp - Types and functions for indexing symbols -------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "clang/Index/IndexSymbol.h"10#include "clang/AST/Attr.h"11#include "clang/AST/DeclCXX.h"12#include "clang/AST/DeclObjC.h"13#include "clang/AST/DeclTemplate.h"14#include "clang/AST/PrettyPrinter.h"15#include "clang/Lex/MacroInfo.h"16 17using namespace clang;18using namespace clang::index;19 20/// \returns true if \c D is a subclass of 'XCTestCase'.21static bool isUnitTestCase(const ObjCInterfaceDecl *D) {22 if (!D)23 return false;24 while (const ObjCInterfaceDecl *SuperD = D->getSuperClass()) {25 if (SuperD->getName() == "XCTestCase")26 return true;27 D = SuperD;28 }29 return false;30}31 32/// \returns true if \c D is in a subclass of 'XCTestCase', returns void, has33/// no parameters, and its name starts with 'test'.34static bool isUnitTest(const ObjCMethodDecl *D) {35 if (!D->parameters().empty())36 return false;37 if (!D->getReturnType()->isVoidType())38 return false;39 if (!D->getSelector().getNameForSlot(0).starts_with("test"))40 return false;41 return isUnitTestCase(D->getClassInterface());42}43 44static void checkForIBOutlets(const Decl *D, SymbolPropertySet &PropSet) {45 if (D->hasAttr<IBOutletAttr>()) {46 PropSet |= (SymbolPropertySet)SymbolProperty::IBAnnotated;47 } else if (D->hasAttr<IBOutletCollectionAttr>()) {48 PropSet |= (SymbolPropertySet)SymbolProperty::IBAnnotated;49 PropSet |= (SymbolPropertySet)SymbolProperty::IBOutletCollection;50 }51}52 53bool index::isFunctionLocalSymbol(const Decl *D) {54 assert(D);55 56 if (isa<ParmVarDecl>(D))57 return true;58 59 if (isa<ObjCTypeParamDecl>(D))60 return true;61 62 if (isa<UsingDirectiveDecl>(D))63 return false;64 if (!D->getParentFunctionOrMethod())65 return false;66 67 if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {68 switch (ND->getFormalLinkage()) {69 case Linkage::Invalid:70 llvm_unreachable("Linkage hasn't been computed!");71 case Linkage::None:72 case Linkage::Internal:73 return true;74 case Linkage::VisibleNone:75 case Linkage::UniqueExternal:76 llvm_unreachable("Not a sema linkage");77 case Linkage::Module:78 case Linkage::External:79 return false;80 }81 }82 83 return true;84}85 86SymbolInfo index::getSymbolInfo(const Decl *D) {87 assert(D);88 SymbolInfo Info;89 Info.Kind = SymbolKind::Unknown;90 Info.SubKind = SymbolSubKind::None;91 Info.Properties = SymbolPropertySet();92 Info.Lang = SymbolLanguage::C;93 94 if (isFunctionLocalSymbol(D)) {95 Info.Properties |= (SymbolPropertySet)SymbolProperty::Local;96 }97 if (isa<ObjCProtocolDecl>(D->getDeclContext())) {98 Info.Properties |= (SymbolPropertySet)SymbolProperty::ProtocolInterface;99 }100 101 if (auto *VT = dyn_cast<VarTemplateDecl>(D)) {102 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;103 Info.Lang = SymbolLanguage::CXX;104 // All other fields are filled from the templated decl.105 D = VT->getTemplatedDecl();106 }107 108 if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {109 switch (TD->getTagKind()) {110 case TagTypeKind::Struct:111 Info.Kind = SymbolKind::Struct; break;112 case TagTypeKind::Union:113 Info.Kind = SymbolKind::Union; break;114 case TagTypeKind::Class:115 Info.Kind = SymbolKind::Class;116 Info.Lang = SymbolLanguage::CXX;117 break;118 case TagTypeKind::Interface:119 Info.Kind = SymbolKind::Protocol;120 Info.Lang = SymbolLanguage::CXX;121 break;122 case TagTypeKind::Enum:123 Info.Kind = SymbolKind::Enum; break;124 }125 126 if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D)) {127 if (!CXXRec->isCLike()) {128 Info.Lang = SymbolLanguage::CXX;129 if (CXXRec->getDescribedClassTemplate()) {130 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;131 }132 }133 }134 135 if (isa<ClassTemplatePartialSpecializationDecl>(D)) {136 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;137 Info.Properties |=138 (SymbolPropertySet)SymbolProperty::TemplatePartialSpecialization;139 } else if (isa<ClassTemplateSpecializationDecl>(D)) {140 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;141 Info.Properties |=142 (SymbolPropertySet)SymbolProperty::TemplateSpecialization;143 }144 145 } else if (auto *VD = dyn_cast<VarDecl>(D)) {146 Info.Kind = SymbolKind::Variable;147 if (isa<ParmVarDecl>(D)) {148 Info.Kind = SymbolKind::Parameter;149 } else if (isa<CXXRecordDecl>(D->getDeclContext())) {150 Info.Kind = SymbolKind::StaticProperty;151 Info.Lang = SymbolLanguage::CXX;152 }153 154 if (isa<VarTemplatePartialSpecializationDecl>(D)) {155 Info.Lang = SymbolLanguage::CXX;156 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;157 Info.Properties |=158 (SymbolPropertySet)SymbolProperty::TemplatePartialSpecialization;159 } else if (isa<VarTemplateSpecializationDecl>(D)) {160 Info.Lang = SymbolLanguage::CXX;161 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;162 Info.Properties |=163 (SymbolPropertySet)SymbolProperty::TemplateSpecialization;164 } else if (VD->getDescribedVarTemplate()) {165 Info.Lang = SymbolLanguage::CXX;166 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;167 }168 169 } else {170 switch (D->getKind()) {171 case Decl::Import:172 Info.Kind = SymbolKind::Module;173 break;174 case Decl::Typedef:175 Info.Kind = SymbolKind::TypeAlias; break; // Lang = C176 case Decl::Function:177 Info.Kind = SymbolKind::Function;178 break;179 case Decl::Field:180 case Decl::IndirectField:181 Info.Kind = SymbolKind::Field;182 if (const CXXRecordDecl *183 CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {184 if (!CXXRec->isCLike())185 Info.Lang = SymbolLanguage::CXX;186 }187 break;188 case Decl::EnumConstant:189 Info.Kind = SymbolKind::EnumConstant; break;190 case Decl::ObjCInterface:191 case Decl::ObjCImplementation: {192 Info.Kind = SymbolKind::Class;193 Info.Lang = SymbolLanguage::ObjC;194 const ObjCInterfaceDecl *ClsD = dyn_cast<ObjCInterfaceDecl>(D);195 if (!ClsD)196 ClsD = cast<ObjCImplementationDecl>(D)->getClassInterface();197 if (isUnitTestCase(ClsD))198 Info.Properties |= (SymbolPropertySet)SymbolProperty::UnitTest;199 break;200 }201 case Decl::ObjCProtocol:202 Info.Kind = SymbolKind::Protocol;203 Info.Lang = SymbolLanguage::ObjC;204 break;205 case Decl::ObjCCategory:206 case Decl::ObjCCategoryImpl: {207 Info.Kind = SymbolKind::Extension;208 Info.Lang = SymbolLanguage::ObjC;209 const ObjCInterfaceDecl *ClsD = nullptr;210 if (auto *CatD = dyn_cast<ObjCCategoryDecl>(D))211 ClsD = CatD->getClassInterface();212 else213 ClsD = cast<ObjCCategoryImplDecl>(D)->getClassInterface();214 if (isUnitTestCase(ClsD))215 Info.Properties |= (SymbolPropertySet)SymbolProperty::UnitTest;216 break;217 }218 case Decl::ObjCMethod: {219 const ObjCMethodDecl *MD = cast<ObjCMethodDecl>(D);220 Info.Kind = MD->isInstanceMethod() ? SymbolKind::InstanceMethod : SymbolKind::ClassMethod;221 if (MD->isPropertyAccessor()) {222 if (MD->param_size())223 Info.SubKind = SymbolSubKind::AccessorSetter;224 else225 Info.SubKind = SymbolSubKind::AccessorGetter;226 }227 Info.Lang = SymbolLanguage::ObjC;228 if (isUnitTest(MD))229 Info.Properties |= (SymbolPropertySet)SymbolProperty::UnitTest;230 if (D->hasAttr<IBActionAttr>())231 Info.Properties |= (SymbolPropertySet)SymbolProperty::IBAnnotated;232 break;233 }234 case Decl::ObjCProperty:235 Info.Kind = SymbolKind::InstanceProperty;236 Info.Lang = SymbolLanguage::ObjC;237 checkForIBOutlets(D, Info.Properties);238 if (auto *Annot = D->getAttr<AnnotateAttr>()) {239 if (Annot->getAnnotation() == "gk_inspectable")240 Info.Properties |= (SymbolPropertySet)SymbolProperty::GKInspectable;241 }242 break;243 case Decl::ObjCIvar:244 Info.Kind = SymbolKind::Field;245 Info.Lang = SymbolLanguage::ObjC;246 checkForIBOutlets(D, Info.Properties);247 break;248 case Decl::Namespace:249 Info.Kind = SymbolKind::Namespace;250 Info.Lang = SymbolLanguage::CXX;251 break;252 case Decl::NamespaceAlias:253 Info.Kind = SymbolKind::NamespaceAlias;254 Info.Lang = SymbolLanguage::CXX;255 break;256 case Decl::CXXConstructor: {257 Info.Kind = SymbolKind::Constructor;258 Info.Lang = SymbolLanguage::CXX;259 auto *CD = cast<CXXConstructorDecl>(D);260 if (CD->isCopyConstructor())261 Info.SubKind = SymbolSubKind::CXXCopyConstructor;262 else if (CD->isMoveConstructor())263 Info.SubKind = SymbolSubKind::CXXMoveConstructor;264 break;265 }266 case Decl::CXXDestructor:267 Info.Kind = SymbolKind::Destructor;268 Info.Lang = SymbolLanguage::CXX;269 break;270 case Decl::CXXConversion:271 Info.Kind = SymbolKind::ConversionFunction;272 Info.Lang = SymbolLanguage::CXX;273 break;274 case Decl::CXXMethod: {275 const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);276 if (MD->isStatic())277 Info.Kind = SymbolKind::StaticMethod;278 else279 Info.Kind = SymbolKind::InstanceMethod;280 Info.Lang = SymbolLanguage::CXX;281 break;282 }283 case Decl::ClassTemplate:284 Info.Kind = SymbolKind::Class;285 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;286 Info.Lang = SymbolLanguage::CXX;287 break;288 case Decl::FunctionTemplate:289 Info.Kind = SymbolKind::Function;290 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;291 Info.Lang = SymbolLanguage::CXX;292 if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(293 cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {294 if (isa<CXXConstructorDecl>(MD))295 Info.Kind = SymbolKind::Constructor;296 else if (isa<CXXDestructorDecl>(MD))297 Info.Kind = SymbolKind::Destructor;298 else if (isa<CXXConversionDecl>(MD))299 Info.Kind = SymbolKind::ConversionFunction;300 else {301 if (MD->isStatic())302 Info.Kind = SymbolKind::StaticMethod;303 else304 Info.Kind = SymbolKind::InstanceMethod;305 }306 }307 break;308 case Decl::TypeAliasTemplate:309 Info.Kind = SymbolKind::TypeAlias;310 Info.Lang = SymbolLanguage::CXX;311 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;312 break;313 case Decl::TypeAlias:314 Info.Kind = SymbolKind::TypeAlias;315 Info.Lang = SymbolLanguage::CXX;316 break;317 case Decl::UnresolvedUsingTypename:318 Info.Kind = SymbolKind::Using;319 Info.SubKind = SymbolSubKind::UsingTypename;320 Info.Lang = SymbolLanguage::CXX;321 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;322 break;323 case Decl::UnresolvedUsingValue:324 Info.Kind = SymbolKind::Using;325 Info.SubKind = SymbolSubKind::UsingValue;326 Info.Lang = SymbolLanguage::CXX;327 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;328 break;329 case Decl::Using:330 Info.Kind = SymbolKind::Using;331 Info.Lang = SymbolLanguage::CXX;332 break;333 case Decl::UsingEnum:334 Info.Kind = SymbolKind::Using;335 Info.Lang = SymbolLanguage::CXX;336 Info.SubKind = SymbolSubKind::UsingEnum;337 break;338 case Decl::Binding:339 Info.Kind = SymbolKind::Variable;340 Info.Lang = SymbolLanguage::CXX;341 break;342 case Decl::MSProperty:343 Info.Kind = SymbolKind::InstanceProperty;344 if (const CXXRecordDecl *CXXRec =345 dyn_cast<CXXRecordDecl>(D->getDeclContext())) {346 if (!CXXRec->isCLike())347 Info.Lang = SymbolLanguage::CXX;348 }349 break;350 case Decl::ClassTemplatePartialSpecialization:351 case Decl::ClassTemplateSpecialization:352 case Decl::CXXRecord:353 case Decl::Enum:354 case Decl::Record:355 llvm_unreachable("records handled before");356 break;357 case Decl::VarTemplateSpecialization:358 case Decl::VarTemplatePartialSpecialization:359 case Decl::ImplicitParam:360 case Decl::ParmVar:361 case Decl::Var:362 case Decl::VarTemplate:363 llvm_unreachable("variables handled before");364 break;365 case Decl::TemplateTypeParm:366 Info.Kind = SymbolKind::TemplateTypeParm;367 break;368 case Decl::TemplateTemplateParm:369 Info.Kind = SymbolKind::TemplateTemplateParm;370 break;371 case Decl::NonTypeTemplateParm:372 Info.Kind = SymbolKind::NonTypeTemplateParm;373 break;374 case Decl::Concept:375 Info.Kind = SymbolKind::Concept;376 break;377 // Other decls get the 'unknown' kind.378 default:379 break;380 }381 }382 383 if (Info.Kind == SymbolKind::Unknown)384 return Info;385 386 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {387 if (FD->getTemplatedKind() ==388 FunctionDecl::TK_FunctionTemplateSpecialization) {389 Info.Properties |= (SymbolPropertySet)SymbolProperty::Generic;390 Info.Properties |=391 (SymbolPropertySet)SymbolProperty::TemplateSpecialization;392 }393 }394 395 if (Info.Properties & (SymbolPropertySet)SymbolProperty::Generic)396 Info.Lang = SymbolLanguage::CXX;397 398 if (auto *attr = D->getExternalSourceSymbolAttr()) {399 if (attr->getLanguage() == "Swift")400 Info.Lang = SymbolLanguage::Swift;401 }402 403 return Info;404}405 406SymbolInfo index::getSymbolInfoForMacro(const MacroInfo &) {407 SymbolInfo Info;408 Info.Kind = SymbolKind::Macro;409 Info.SubKind = SymbolSubKind::None;410 Info.Properties = SymbolPropertySet();411 Info.Lang = SymbolLanguage::C;412 return Info;413}414 415bool index::applyForEachSymbolRoleInterruptible(SymbolRoleSet Roles,416 llvm::function_ref<bool(SymbolRole)> Fn) {417#define APPLY_FOR_ROLE(Role) \418 if (Roles & (unsigned)SymbolRole::Role) \419 if (!Fn(SymbolRole::Role)) \420 return false;421 422 APPLY_FOR_ROLE(Declaration);423 APPLY_FOR_ROLE(Definition);424 APPLY_FOR_ROLE(Reference);425 APPLY_FOR_ROLE(Read);426 APPLY_FOR_ROLE(Write);427 APPLY_FOR_ROLE(Call);428 APPLY_FOR_ROLE(Dynamic);429 APPLY_FOR_ROLE(AddressOf);430 APPLY_FOR_ROLE(Implicit);431 APPLY_FOR_ROLE(Undefinition);432 APPLY_FOR_ROLE(RelationChildOf);433 APPLY_FOR_ROLE(RelationBaseOf);434 APPLY_FOR_ROLE(RelationOverrideOf);435 APPLY_FOR_ROLE(RelationReceivedBy);436 APPLY_FOR_ROLE(RelationCalledBy);437 APPLY_FOR_ROLE(RelationExtendedBy);438 APPLY_FOR_ROLE(RelationAccessorOf);439 APPLY_FOR_ROLE(RelationContainedBy);440 APPLY_FOR_ROLE(RelationIBTypeOf);441 APPLY_FOR_ROLE(RelationSpecializationOf);442 APPLY_FOR_ROLE(NameReference);443 444#undef APPLY_FOR_ROLE445 446 return true;447}448 449void index::applyForEachSymbolRole(SymbolRoleSet Roles,450 llvm::function_ref<void(SymbolRole)> Fn) {451 applyForEachSymbolRoleInterruptible(Roles, [&](SymbolRole r) -> bool {452 Fn(r);453 return true;454 });455}456 457void index::printSymbolRoles(SymbolRoleSet Roles, raw_ostream &OS) {458 bool VisitedOnce = false;459 applyForEachSymbolRole(Roles, [&](SymbolRole Role) {460 if (VisitedOnce)461 OS << ',';462 else463 VisitedOnce = true;464 switch (Role) {465 case SymbolRole::Declaration: OS << "Decl"; break;466 case SymbolRole::Definition: OS << "Def"; break;467 case SymbolRole::Reference: OS << "Ref"; break;468 case SymbolRole::Read: OS << "Read"; break;469 case SymbolRole::Write: OS << "Writ"; break;470 case SymbolRole::Call: OS << "Call"; break;471 case SymbolRole::Dynamic: OS << "Dyn"; break;472 case SymbolRole::AddressOf: OS << "Addr"; break;473 case SymbolRole::Implicit: OS << "Impl"; break;474 case SymbolRole::Undefinition: OS << "Undef"; break;475 case SymbolRole::RelationChildOf: OS << "RelChild"; break;476 case SymbolRole::RelationBaseOf: OS << "RelBase"; break;477 case SymbolRole::RelationOverrideOf: OS << "RelOver"; break;478 case SymbolRole::RelationReceivedBy: OS << "RelRec"; break;479 case SymbolRole::RelationCalledBy: OS << "RelCall"; break;480 case SymbolRole::RelationExtendedBy: OS << "RelExt"; break;481 case SymbolRole::RelationAccessorOf: OS << "RelAcc"; break;482 case SymbolRole::RelationContainedBy: OS << "RelCont"; break;483 case SymbolRole::RelationIBTypeOf: OS << "RelIBType"; break;484 case SymbolRole::RelationSpecializationOf: OS << "RelSpecialization"; break;485 case SymbolRole::NameReference: OS << "NameReference"; break;486 }487 });488}489 490bool index::printSymbolName(const Decl *D, const LangOptions &LO,491 raw_ostream &OS) {492 if (auto *ND = dyn_cast<NamedDecl>(D)) {493 PrintingPolicy Policy(LO);494 // Forward references can have different template argument names. Suppress495 // the template argument names in constructors to make their name more496 // stable.497 Policy.SuppressTemplateArgsInCXXConstructors = true;498 DeclarationName DeclName = ND->getDeclName();499 if (DeclName.isEmpty())500 return true;501 DeclName.print(OS, Policy);502 return false;503 } else {504 return true;505 }506}507 508StringRef index::getSymbolKindString(SymbolKind K) {509 switch (K) {510 // FIXME: for backwards compatibility, the include directive kind is treated511 // the same as Unknown512 case SymbolKind::IncludeDirective:513 case SymbolKind::Unknown: return "<unknown>";514 case SymbolKind::Module: return "module";515 case SymbolKind::Namespace: return "namespace";516 case SymbolKind::NamespaceAlias: return "namespace-alias";517 case SymbolKind::Macro: return "macro";518 case SymbolKind::Enum: return "enum";519 case SymbolKind::Struct: return "struct";520 case SymbolKind::Class: return "class";521 case SymbolKind::Protocol: return "protocol";522 case SymbolKind::Extension: return "extension";523 case SymbolKind::Union: return "union";524 case SymbolKind::TypeAlias: return "type-alias";525 case SymbolKind::Function: return "function";526 case SymbolKind::Variable: return "variable";527 case SymbolKind::Field: return "field";528 case SymbolKind::EnumConstant: return "enumerator";529 case SymbolKind::InstanceMethod: return "instance-method";530 case SymbolKind::ClassMethod: return "class-method";531 case SymbolKind::StaticMethod: return "static-method";532 case SymbolKind::InstanceProperty: return "instance-property";533 case SymbolKind::ClassProperty: return "class-property";534 case SymbolKind::StaticProperty: return "static-property";535 case SymbolKind::Constructor: return "constructor";536 case SymbolKind::Destructor: return "destructor";537 case SymbolKind::ConversionFunction: return "conversion-func";538 case SymbolKind::Parameter: return "param";539 case SymbolKind::Using: return "using";540 case SymbolKind::TemplateTypeParm: return "template-type-param";541 case SymbolKind::TemplateTemplateParm: return "template-template-param";542 case SymbolKind::NonTypeTemplateParm: return "non-type-template-param";543 case SymbolKind::Concept:544 return "concept";545 }546 llvm_unreachable("invalid symbol kind");547}548 549StringRef index::getSymbolSubKindString(SymbolSubKind K) {550 switch (K) {551 case SymbolSubKind::None: return "<none>";552 case SymbolSubKind::CXXCopyConstructor: return "cxx-copy-ctor";553 case SymbolSubKind::CXXMoveConstructor: return "cxx-move-ctor";554 case SymbolSubKind::AccessorGetter: return "acc-get";555 case SymbolSubKind::AccessorSetter: return "acc-set";556 case SymbolSubKind::UsingTypename: return "using-typename";557 case SymbolSubKind::UsingValue: return "using-value";558 case SymbolSubKind::UsingEnum: return "using-enum";559 }560 llvm_unreachable("invalid symbol subkind");561}562 563StringRef index::getSymbolLanguageString(SymbolLanguage K) {564 switch (K) {565 case SymbolLanguage::C: return "C";566 case SymbolLanguage::ObjC: return "ObjC";567 case SymbolLanguage::CXX: return "C++";568 case SymbolLanguage::Swift: return "Swift";569 }570 llvm_unreachable("invalid symbol language kind");571}572 573void index::applyForEachSymbolProperty(SymbolPropertySet Props,574 llvm::function_ref<void(SymbolProperty)> Fn) {575#define APPLY_FOR_PROPERTY(K) \576 if (Props & (SymbolPropertySet)SymbolProperty::K) \577 Fn(SymbolProperty::K)578 579 APPLY_FOR_PROPERTY(Generic);580 APPLY_FOR_PROPERTY(TemplatePartialSpecialization);581 APPLY_FOR_PROPERTY(TemplateSpecialization);582 APPLY_FOR_PROPERTY(UnitTest);583 APPLY_FOR_PROPERTY(IBAnnotated);584 APPLY_FOR_PROPERTY(IBOutletCollection);585 APPLY_FOR_PROPERTY(GKInspectable);586 APPLY_FOR_PROPERTY(Local);587 APPLY_FOR_PROPERTY(ProtocolInterface);588 589#undef APPLY_FOR_PROPERTY590}591 592void index::printSymbolProperties(SymbolPropertySet Props, raw_ostream &OS) {593 bool VisitedOnce = false;594 applyForEachSymbolProperty(Props, [&](SymbolProperty Prop) {595 if (VisitedOnce)596 OS << ',';597 else598 VisitedOnce = true;599 switch (Prop) {600 case SymbolProperty::Generic: OS << "Gen"; break;601 case SymbolProperty::TemplatePartialSpecialization: OS << "TPS"; break;602 case SymbolProperty::TemplateSpecialization: OS << "TS"; break;603 case SymbolProperty::UnitTest: OS << "test"; break;604 case SymbolProperty::IBAnnotated: OS << "IB"; break;605 case SymbolProperty::IBOutletCollection: OS << "IBColl"; break;606 case SymbolProperty::GKInspectable: OS << "GKI"; break;607 case SymbolProperty::Local: OS << "local"; break;608 case SymbolProperty::ProtocolInterface: OS << "protocol"; break;609 }610 });611}612