[index] Add Swift symbol language and Swift-specific symbol subkinds.

Author: akyrtzi

include/clang/Index/IndexSymbol.h

@@ -57,13 +57,36 @@ enum class SymbolLanguage {
   C,
   ObjC,
   CXX,
+  Swift,
 };
 
 /// Language specific sub-kinds.
 enum class SymbolSubKind {
   None,
   CXXCopyConstructor,
   CXXMoveConstructor,
+
+  // Swift sub-kinds
+
+  SwiftAccessorGetter,
+  SwiftAccessorSetter,
+  SwiftAccessorWillSet,
+  SwiftAccessorDidSet,
+  SwiftAccessorAddressor,
+  SwiftAccessorMutableAddressor,
+
+  SwiftExtensionOfStruct,
+  SwiftExtensionOfClass,
+  SwiftExtensionOfEnum,
+  SwiftExtensionOfProtocol,
+
+  SwiftPrefixOperator,
+  SwiftPostfixOperator,
+  SwiftInfixOperator,
+
+  SwiftSubscript,
+  SwiftAssociatedType,
+  SwiftGenericTypeParam,
 };
 
 /// Set of properties that provide additional info about a symbol.

lib/Index/IndexSymbol.cpp

@@ -375,6 +375,22 @@ StringRef index::getSymbolSubKindString(SymbolSubKind K) {
   case SymbolSubKind::None: return "<none>";
   case SymbolSubKind::CXXCopyConstructor: return "cxx-copy-ctor";
   case SymbolSubKind::CXXMoveConstructor: return "cxx-move-ctor";
+  case SymbolSubKind::SwiftAccessorGetter: return "acc-get";
+  case SymbolSubKind::SwiftAccessorSetter: return "acc-set";
+  case SymbolSubKind::SwiftAccessorWillSet: return "acc-willset";
+  case SymbolSubKind::SwiftAccessorDidSet: return "acc-didset";
+  case SymbolSubKind::SwiftAccessorAddressor: return "acc-addr";
+  case SymbolSubKind::SwiftAccessorMutableAddressor: return "acc-mutaddr";
+  case SymbolSubKind::SwiftExtensionOfStruct: return "ext-struct";
+  case SymbolSubKind::SwiftExtensionOfClass: return "ext-class";
+  case SymbolSubKind::SwiftExtensionOfEnum: return "ext-enum";
+  case SymbolSubKind::SwiftExtensionOfProtocol: return "ext-protocol";
+  case SymbolSubKind::SwiftPrefixOperator: return "prefix-operator";
+  case SymbolSubKind::SwiftPostfixOperator: return "postfix-operator";
+  case SymbolSubKind::SwiftInfixOperator: return "infix-operator";
+  case SymbolSubKind::SwiftSubscript: return "subscript";
+  case SymbolSubKind::SwiftAssociatedType: return "associated-type";
+  case SymbolSubKind::SwiftGenericTypeParam: return "generic-type-param";
   }
   llvm_unreachable("invalid symbol subkind");
 }
@@ -384,6 +400,7 @@ StringRef index::getSymbolLanguageString(SymbolLanguage K) {
   case SymbolLanguage::C: return "C";
   case SymbolLanguage::ObjC: return "ObjC";
   case SymbolLanguage::CXX: return "C++";
+  case SymbolLanguage::Swift: return "Swift";
   }
   llvm_unreachable("invalid symbol language kind");
 }

tools/libclang/CXIndexDataConsumer.cpp

@@ -1313,6 +1313,7 @@ static CXIdxEntityLanguage getEntityLangFromSymbolLang(SymbolLanguage L) {
   case SymbolLanguage::C: return CXIdxEntityLang_C;
   case SymbolLanguage::ObjC: return CXIdxEntityLang_ObjC;
   case SymbolLanguage::CXX: return CXIdxEntityLang_CXX;
+  case SymbolLanguage::Swift: llvm_unreachable("unexpected Swift symbol language");;
   }
   llvm_unreachable("invalid symbol language");
 }