[NFC, Refactor] Rename the (scoped) enum DeclaratorContext's enumerators to avoid redundancy

[faisalv]

Summary

Since these are scoped enumerators, they have to be prefixed by DeclaratorContext, so lets remove Context from the name, and return some characters to the multiverse.

[aaron.ballman]

LGTM!

[wchilders]

+1 Nice QOL change :)

[bruno]

LGTM

[faisalv]

Committed: https://github.com/llvm/llvm-project/commit/e4d27932a59fb61aaba3ff7a3ccd1b5bc9215fb9

clang/include/clang/Parse/Parser.h

 public:
   TypeResult ParseTypeName(SourceRange *Range = nullptr,
                            DeclaratorContext Context
-                             = DeclaratorContext::TypeNameContext,
+                             = DeclaratorContext::TypeName,
                            AccessSpecifier AS = AS_none,
                            Decl **OwnedType = nullptr,
                            ParsedAttributes *Attrs = nullptr);

clang/include/clang/Sema/DeclSpec.h

 };
 
 enum class DeclaratorContext {
-    FileContext,         // File scope declaration.
-    PrototypeContext,    // Within a function prototype.
-    ObjCResultContext,   // An ObjC method result type.
-    ObjCParameterContext,// An ObjC method parameter type.
-    KNRTypeListContext,  // K&R type definition list for formals.
-    TypeNameContext,     // Abstract declarator for types.
-    FunctionalCastContext, // Type in a C++ functional cast expression.
-    MemberContext,       // Struct/Union field.
-    BlockContext,        // Declaration within a block in a function.
-    ForContext,          // Declaration within first part of a for loop.
-    InitStmtContext,     // Declaration within optional init stmt of if/switch.
-    ConditionContext,    // Condition declaration in a C++ if/switch/while/for.
-    TemplateParamContext,// Within a template parameter list.
-    CXXNewContext,       // C++ new-expression.
-    CXXCatchContext,     // C++ catch exception-declaration
-    ObjCCatchContext,    // Objective-C catch exception-declaration
-    BlockLiteralContext, // Block literal declarator.
-    LambdaExprContext,   // Lambda-expression declarator.
-    LambdaExprParameterContext, // Lambda-expression parameter declarator.
-    ConversionIdContext, // C++ conversion-type-id.
-    TrailingReturnContext, // C++11 trailing-type-specifier.
-    TrailingReturnVarContext, // C++11 trailing-type-specifier for variable.
-    TemplateArgContext,  // Any template argument (in template argument list).
-    TemplateTypeArgContext, // Template type argument (in default argument).
-    AliasDeclContext,    // C++11 alias-declaration.
-    AliasTemplateContext, // C++11 alias-declaration template.
-    RequiresExprContext   // C++2a requires-expression.
+  File,                // File scope declaration.
+  Prototype,           // Within a function prototype.
+  ObjCResult,          // An ObjC method result type.
+  ObjCParameter,       // An ObjC method parameter type.
+  KNRTypeList,         // K&R type definition list for formals.
+  TypeName,            // Abstract declarator for types.
+  FunctionalCast,      // Type in a C++ functional cast expression.
+  Member,              // Struct/Union field.
+  Block,               // Declaration within a block in a function.
+  ForInit,             // Declaration within first part of a for loop.
+  SelectionInit,       // Declaration within optional init stmt of if/switch.
+  Condition,           // Condition declaration in a C++ if/switch/while/for.
+  TemplateParam,       // Within a template parameter list.
+  CXXNew,              // C++ new-expression.
+  CXXCatch,            // C++ catch exception-declaration
+  ObjCCatch,           // Objective-C catch exception-declaration
+  BlockLiteral,        // Block literal declarator.
+  LambdaExpr,          // Lambda-expression declarator.
+  LambdaExprParameter, // Lambda-expression parameter declarator.
+  ConversionId,        // C++ conversion-type-id.
+  TrailingReturn,      // C++11 trailing-type-specifier.
+  TrailingReturnVar,   // C++11 trailing-type-specifier for variable.
+  TemplateArg,         // Any template argument (in template argument list).
+  TemplateTypeArg,     // Template type argument (in default argument).
+  AliasDecl,           // C++11 alias-declaration.
+  AliasTemplate,       // C++11 alias-declaration template.
+  RequiresExpr         // C++2a requires-expression.
 };
 
-
 /// Information about one declarator, including the parsed type
 /// information and the identifier.
 ///

   DeclaratorContext getContext() const { return Context; }
 
   bool isPrototypeContext() const {
-    return (Context == DeclaratorContext::PrototypeContext ||
-            Context == DeclaratorContext::ObjCParameterContext ||
-            Context == DeclaratorContext::ObjCResultContext ||
-            Context == DeclaratorContext::LambdaExprParameterContext);
+    return (Context == DeclaratorContext::Prototype ||
+            Context == DeclaratorContext::ObjCParameter ||
+            Context == DeclaratorContext::ObjCResult ||
+            Context == DeclaratorContext::LambdaExprParameter);
   }
 
   /// Get the source range that spans this declarator.

   /// parameter lists.
   bool mayOmitIdentifier() const {
     switch (Context) {
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::ConditionContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::Condition:
       return false;
 
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
+    case DeclaratorContext::RequiresExpr:
       return true;
     }
     llvm_unreachable("unknown context kind!");

   /// typenames.
   bool mayHaveIdentifier() const {
     switch (Context) {
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::ConditionContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::Condition:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::RequiresExpr:
       return true;
 
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
       return false;
     }
     llvm_unreachable("unknown context kind!");

   /// Return true if the context permits a C++17 decomposition declarator.
   bool mayHaveDecompositionDeclarator() const {
     switch (Context) {
-    case DeclaratorContext::FileContext:
+    case DeclaratorContext::File:
       // FIXME: It's not clear that the proposal meant to allow file-scope
       // structured bindings, but it does.
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::ConditionContext:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::Condition:
       return true;
 
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::RequiresExpr:
       // Maybe one day...
       return false;
 
     // These contexts don't allow any kind of non-abstract declarator.
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
       return false;
     }
     llvm_unreachable("unknown context kind!");

       return false;
 
     if (getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_extern &&
-        Context != DeclaratorContext::FileContext)
+        Context != DeclaratorContext::File)
       return false;
 
     // Special names can't have direct initializers.

       return false;
 
     switch (Context) {
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::TrailingReturnVarContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::TrailingReturnVar:
       return true;
 
-    case DeclaratorContext::ConditionContext:
+    case DeclaratorContext::Condition:
       // This may not be followed by a direct initializer, but it can't be a
       // function declaration either, and we'd prefer to perform a tentative
       // parse in order to produce the right diagnostic.
       return true;
 
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext: // FIXME
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast: // FIXME
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::RequiresExpr:
       return false;
     }
     llvm_unreachable("unknown context kind!");

       return false;
 
     switch (Context) {
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
       return true;
 
-    case DeclaratorContext::ConditionContext:
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::Condition:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
+    case DeclaratorContext::RequiresExpr:
       return false;
     }
     llvm_unreachable("unknown context kind!");

   /// expression could appear.
   bool isExpressionContext() const {
     switch (Context) {
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::MemberContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::Member:
 
     // FIXME: sizeof(...) permits an expression.
-    case DeclaratorContext::TypeNameContext:
-
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::TypeName:
+
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::RequiresExpr:
       return false;
 
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::ConditionContext:
-    case DeclaratorContext::TemplateArgContext:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::Condition:
+    case DeclaratorContext::TemplateArg:
       return true;
     }
 

 
   /// Returns true if this declares a real member and not a friend.
   bool isFirstDeclarationOfMember() {
-    return getContext() == DeclaratorContext::MemberContext &&
+    return getContext() == DeclaratorContext::Member &&
            !getDeclSpec().isFriendSpecified();
   }
 

   Declarator D;
   Expr *BitfieldSize;
   explicit FieldDeclarator(const DeclSpec &DS)
-      : D(DS, DeclaratorContext::MemberContext),
+      : D(DS, DeclaratorContext::Member),
         BitfieldSize(nullptr) {}
 };
 

clang/lib/Parse/ParseDecl.cpp

     return getLangOpts().CPlusPlus;
 
   case tok::l_square: // Might be an attribute on an unnamed bit-field.
-    return Context == DeclaratorContext::MemberContext &&
+    return Context == DeclaratorContext::Member &&
            getLangOpts().CPlusPlus11 && NextToken().is(tok::l_square);
 
   case tok::colon: // Might be a typo for '::' or an unnamed bit-field.
-    return Context == DeclaratorContext::MemberContext ||
+    return Context == DeclaratorContext::Member ||
            getLangOpts().CPlusPlus;
 
   case tok::identifier:

       // At namespace scope, 'identifier:' is probably a typo for 'identifier::'
       // and in block scope it's probably a label. Inside a class definition,
       // this is a bit-field.
-      return Context == DeclaratorContext::MemberContext ||
+      return Context == DeclaratorContext::Member ||
              (getLangOpts().CPlusPlus &&
-              Context == DeclaratorContext::FileContext);
+              Context == DeclaratorContext::File);
 
     case tok::identifier: // Possible virt-specifier.
       return getLangOpts().CPlusPlus11 && isCXX11VirtSpecifier(NextToken());

       // Function definitions are only allowed at file scope and in C++ classes.
       // The C++ inline method definition case is handled elsewhere, so we only
       // need to handle the file scope definition case.
-      if (Context == DeclaratorContext::FileContext) {
+      if (Context == DeclaratorContext::File) {
         if (isStartOfFunctionDefinition(D)) {
           if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
             Diag(Tok, diag::err_function_declared_typedef);

   if (FirstDecl)
     DeclsInGroup.push_back(FirstDecl);
 
-  bool ExpectSemi = Context != DeclaratorContext::ForContext;
+  bool ExpectSemi = Context != DeclaratorContext::ForInit;
 
   // If we don't have a comma, it is either the end of the list (a ';') or an
   // error, bail out.

     *DeclEnd = Tok.getLocation();
 
   if (ExpectSemi &&
-      ExpectAndConsumeSemi(Context == DeclaratorContext::FileContext
+      ExpectAndConsumeSemi(Context == DeclaratorContext::File
                            ? diag::err_invalid_token_after_toplevel_declarator
                            : diag::err_expected_semi_declaration)) {
     // Okay, there was no semicolon and one was expected.  If we see a

       if (Init.isInvalid()) {
         SmallVector<tok::TokenKind, 2> StopTokens;
         StopTokens.push_back(tok::comma);
-        if (D.getContext() == DeclaratorContext::ForContext ||
-            D.getContext() == DeclaratorContext::InitStmtContext)
+        if (D.getContext() == DeclaratorContext::ForInit ||
+            D.getContext() == DeclaratorContext::SelectionInit)
           StopTokens.push_back(tok::r_paren);
         SkipUntil(StopTokens, StopAtSemi | StopBeforeMatch);
         Actions.ActOnInitializerError(ThisDecl);

 /// DeclaratorContext enumerator values.
 Parser::DeclSpecContext
 Parser::getDeclSpecContextFromDeclaratorContext(DeclaratorContext Context) {
-  if (Context == DeclaratorContext::MemberContext)
+  if (Context == DeclaratorContext::Member)
     return DeclSpecContext::DSC_class;
-  if (Context == DeclaratorContext::FileContext)
+  if (Context == DeclaratorContext::File)
     return DeclSpecContext::DSC_top_level;
-  if (Context == DeclaratorContext::TemplateParamContext)
+  if (Context == DeclaratorContext::TemplateParam)
     return DeclSpecContext::DSC_template_param;
-  if (Context == DeclaratorContext::TemplateArgContext ||
-      Context == DeclaratorContext::TemplateTypeArgContext)
+  if (Context == DeclaratorContext::TemplateArg ||
+      Context == DeclaratorContext::TemplateTypeArg)
     return DeclSpecContext::DSC_template_type_arg;
-  if (Context == DeclaratorContext::TrailingReturnContext ||
-      Context == DeclaratorContext::TrailingReturnVarContext)
+  if (Context == DeclaratorContext::TrailingReturn ||
+      Context == DeclaratorContext::TrailingReturnVar)
     return DeclSpecContext::DSC_trailing;
-  if (Context == DeclaratorContext::AliasDeclContext ||
-      Context == DeclaratorContext::AliasTemplateContext)
+  if (Context == DeclaratorContext::AliasDecl ||
+      Context == DeclaratorContext::AliasTemplate)
     return DeclSpecContext::DSC_alias_declaration;
   return DeclSpecContext::DSC_normal;
 }

       // declares 'enum E : int; E *p;' not 'enum E : int*; E p;'.
       DeclSpec DS(AttrFactory);
       ParseSpecifierQualifierList(DS, AS, DeclSpecContext::DSC_type_specifier);
-      Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+      Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
       BaseType = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
 
       BaseRange = SourceRange(ColonLoc, DeclaratorInfo.getSourceRange().getEnd());

   // since those are a C++11 feature, there is no rejects-valid issue there.)
   if (Kind == tok::ampamp)
     return Lang.CPlusPlus11 ||
-           (TheContext != DeclaratorContext::ConversionIdContext &&
-            TheContext != DeclaratorContext::CXXNewContext);
+           (TheContext != DeclaratorContext::ConversionId &&
+            TheContext != DeclaratorContext::CXXNew);
 
   return false;
 }

         (NextToken().is(tok::coloncolon) || NextToken().is(tok::less))) ||
        Tok.is(tok::annot_cxxscope))) {
     bool EnteringContext =
-        D.getContext() == DeclaratorContext::FileContext ||
-        D.getContext() == DeclaratorContext::MemberContext;
+        D.getContext() == DeclaratorContext::File ||
+        D.getContext() == DeclaratorContext::Member;
     CXXScopeSpec SS;
     ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
                                    /*ObjectHadErrors=*/false, EnteringContext);

     // GNU attributes are not allowed here in a new-type-id, but Declspec and
     // C++11 attributes are allowed.
     unsigned Reqs = AR_CXX11AttributesParsed | AR_DeclspecAttributesParsed |
-                    ((D.getContext() != DeclaratorContext::CXXNewContext)
+                    ((D.getContext() != DeclaratorContext::CXXNew)
                          ? AR_GNUAttributesParsed
                          : AR_GNUAttributesParsedAndRejected);
     ParseTypeQualifierListOpt(DS, Reqs, true, !D.mayOmitIdentifier());

     // this context it is a bitfield. Also in range-based for statement colon
     // may delimit for-range-declaration.
     ColonProtectionRAIIObject X(
-        *this, D.getContext() == DeclaratorContext::MemberContext ||
-                   (D.getContext() == DeclaratorContext::ForContext &&
+        *this, D.getContext() == DeclaratorContext::Member ||
+                   (D.getContext() == DeclaratorContext::ForInit &&
                     getLangOpts().CPlusPlus11));
 
     // ParseDeclaratorInternal might already have parsed the scope.
     if (D.getCXXScopeSpec().isEmpty()) {
       bool EnteringContext =
-          D.getContext() == DeclaratorContext::FileContext ||
-          D.getContext() == DeclaratorContext::MemberContext;
+          D.getContext() == DeclaratorContext::File ||
+          D.getContext() == DeclaratorContext::Member;
       ParseOptionalCXXScopeSpecifier(
           D.getCXXScopeSpec(), /*ObjectType=*/nullptr,
           /*ObjectHadErrors=*/false, EnteringContext);

     //   been expanded or contains auto; otherwise, it is parsed as part of the
     //   parameter-declaration-clause.
     if (Tok.is(tok::ellipsis) && D.getCXXScopeSpec().isEmpty() &&
-        !((D.getContext() == DeclaratorContext::PrototypeContext ||
-           D.getContext() == DeclaratorContext::LambdaExprParameterContext ||
-           D.getContext() == DeclaratorContext::BlockLiteralContext) &&
+        !((D.getContext() == DeclaratorContext::Prototype ||
+           D.getContext() == DeclaratorContext::LambdaExprParameter ||
+           D.getContext() == DeclaratorContext::BlockLiteral) &&
           NextToken().is(tok::r_paren) &&
           !D.hasGroupingParens() &&
           !Actions.containsUnexpandedParameterPacks(D) &&

         AllowDeductionGuide = false;
       } else if (D.getCXXScopeSpec().isSet()) {
         AllowConstructorName =
-          (D.getContext() == DeclaratorContext::FileContext ||
-           D.getContext() == DeclaratorContext::MemberContext);
+          (D.getContext() == DeclaratorContext::File ||
+           D.getContext() == DeclaratorContext::Member);
         AllowDeductionGuide = false;
       } else {
         AllowConstructorName =
-            (D.getContext() == DeclaratorContext::MemberContext);
+            (D.getContext() == DeclaratorContext::Member);
         AllowDeductionGuide =
-          (D.getContext() == DeclaratorContext::FileContext ||
-           D.getContext() == DeclaratorContext::MemberContext);
+          (D.getContext() == DeclaratorContext::File ||
+           D.getContext() == DeclaratorContext::Member);
       }
 
       bool HadScope = D.getCXXScopeSpec().isValid();

       // An identifier within parens is unlikely to be intended to be anything
       // other than a name being "declared".
       DiagnoseIdentifier = true;
-    else if (D.getContext() == DeclaratorContext::TemplateArgContext)
+    else if (D.getContext() == DeclaratorContext::TemplateArg)
       // T<int N> is an accidental identifier; T<int N indicates a missing '>'.
       DiagnoseIdentifier =
           NextToken().isOneOf(tok::comma, tok::greater, tok::greatergreater);
-    else if (D.getContext() == DeclaratorContext::AliasDeclContext ||
-             D.getContext() == DeclaratorContext::AliasTemplateContext)
+    else if (D.getContext() == DeclaratorContext::AliasDecl ||
+             D.getContext() == DeclaratorContext::AliasTemplate)
       // The most likely error is that the ';' was forgotten.
       DiagnoseIdentifier = NextToken().isOneOf(tok::comma, tok::semi);
-    else if ((D.getContext() == DeclaratorContext::TrailingReturnContext ||
-              D.getContext() == DeclaratorContext::TrailingReturnVarContext) &&
+    else if ((D.getContext() == DeclaratorContext::TrailingReturn ||
+              D.getContext() == DeclaratorContext::TrailingReturnVar) &&
              !isCXX11VirtSpecifier(Tok))
       DiagnoseIdentifier = NextToken().isOneOf(
           tok::comma, tok::semi, tok::equal, tok::l_brace, tok::kw_try);

       LLVM_BUILTIN_TRAP;
     if (Tok.is(tok::l_square))
       return ParseMisplacedBracketDeclarator(D);
-    if (D.getContext() == DeclaratorContext::MemberContext) {
+    if (D.getContext() == DeclaratorContext::Member) {
       // Objective-C++: Detect C++ keywords and try to prevent further errors by
       // treating these keyword as valid member names.
       if (getLangOpts().ObjC && getLangOpts().CPlusPlus &&

   // FIXME: currently, "static" case isn't handled correctly.
   bool IsCXX11MemberFunction = getLangOpts().CPlusPlus11 &&
         D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef &&
-        (D.getContext() == DeclaratorContext::MemberContext
+        (D.getContext() == DeclaratorContext::Member
          ? !D.getDeclSpec().isFriendSpecified()
-         : D.getContext() == DeclaratorContext::FileContext &&
+         : D.getContext() == DeclaratorContext::File &&
            D.getCXXScopeSpec().isValid() &&
            Actions.CurContext->isRecord());
   if (!IsCXX11MemberFunction)

     // "LambdaExprParameterContext", because we must accept either
     // 'declarator' or 'abstract-declarator' here.
     Declarator ParmDeclarator(
-        DS, DeclaratorCtx == DeclaratorContext::RequiresExprContext
-                ? DeclaratorContext::RequiresExprContext
-                : DeclaratorCtx == DeclaratorContext::LambdaExprContext
-                      ? DeclaratorContext::LambdaExprParameterContext
-                      : DeclaratorContext::PrototypeContext);
+        DS, DeclaratorCtx == DeclaratorContext::RequiresExpr
+                ? DeclaratorContext::RequiresExpr
+                : DeclaratorCtx == DeclaratorContext::LambdaExpr
+                      ? DeclaratorContext::LambdaExprParameter
+                      : DeclaratorContext::Prototype);
     ParseDeclarator(ParmDeclarator);
 
     // Parse GNU attributes, if present.

         SourceLocation EqualLoc = Tok.getLocation();
 
         // Parse the default argument
-        if (DeclaratorCtx == DeclaratorContext::MemberContext) {
+        if (DeclaratorCtx == DeclaratorContext::Member) {
           // If we're inside a class definition, cache the tokens
           // corresponding to the default argument. We'll actually parse
           // them when we see the end of the class definition.

clang/lib/Parse/ParseDeclCXX.cpp

   //   nested-name-specifier, the name is [...] considered to name the
   //   constructor.
   if (getLangOpts().CPlusPlus11 &&
-      Context == DeclaratorContext::MemberContext &&
+      Context == DeclaratorContext::Member &&
       Tok.is(tok::identifier) &&
       (NextToken().is(tok::semi) || NextToken().is(tok::comma) ||
        NextToken().is(tok::ellipsis)) &&

   Decl *DeclFromDeclSpec = nullptr;
   TypeResult TypeAlias = ParseTypeName(
       nullptr,
-      TemplateInfo.Kind ? DeclaratorContext::AliasTemplateContext
-                        : DeclaratorContext::AliasDeclContext,
+      TemplateInfo.Kind ? DeclaratorContext::AliasTemplate
+                        : DeclaratorContext::AliasDecl,
       AS, &DeclFromDeclSpec, &Attrs);
   if (OwnedType)
     *OwnedType = DeclFromDeclSpec;

 
     EndLocation = ParseDecltypeSpecifier(DS);
 
-    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
     return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
   }
 

   DS.SetTypeSpecType(TST_typename, IdLoc, PrevSpec, DiagID, Type,
                      Actions.getASTContext().getPrintingPolicy());
 
-  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
   return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
 }
 

     SourceLocation DeclEnd;
     return DeclGroupPtrTy::make(
         DeclGroupRef(ParseTemplateDeclarationOrSpecialization(
-            DeclaratorContext::MemberContext, DeclEnd, AccessAttrs, AS)));
+            DeclaratorContext::Member, DeclEnd, AccessAttrs, AS)));
   }
 
   // Handle:  member-declaration ::= '__extension__' member-declaration

     }
     SourceLocation DeclEnd;
     // Otherwise, it must be a using-declaration or an alias-declaration.
-    return ParseUsingDeclaration(DeclaratorContext::MemberContext, TemplateInfo,
+    return ParseUsingDeclaration(DeclaratorContext::Member, TemplateInfo,
                                  UsingLoc, DeclEnd, AS);
   }
 

     return Actions.ConvertDeclToDeclGroup(TheDecl);
   }
 
-  ParsingDeclarator DeclaratorInfo(*this, DS, DeclaratorContext::MemberContext);
+  ParsingDeclarator DeclaratorInfo(*this, DS, DeclaratorContext::Member);
   if (TemplateInfo.TemplateParams)
     DeclaratorInfo.setTemplateParameterLists(TemplateParams);
   VirtSpecifiers VS;

       break;
 
     if (Tok.isAtStartOfLine() &&
-        !MightBeDeclarator(DeclaratorContext::MemberContext)) {
+        !MightBeDeclarator(DeclaratorContext::Member)) {
       // This comma was followed by a line-break and something which can't be
       // the start of a declarator. The comma was probably a typo for a
       // semicolon.

   ConsumeToken();
 
   return ParseTypeName(&Range, MayBeFollowedByDirectInit
-                                   ? DeclaratorContext::TrailingReturnVarContext
-                                   : DeclaratorContext::TrailingReturnContext);
+                                   ? DeclaratorContext::TrailingReturnVar
+                                   : DeclaratorContext::TrailingReturn);
 }
 
 /// Parse a requires-clause as part of a function declaration.

clang/lib/Parse/ParseExpr.cpp

             DS.SetTypeSpecType(TST_typename, ILoc, PrevSpec, DiagID, Typ,
                                Actions.getASTContext().getPrintingPolicy());
 
-            Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+            Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
             TypeResult Ty = Actions.ActOnTypeName(getCurScope(),
                                                   DeclaratorInfo);
             if (Ty.isInvalid())

                          PrevSpec, DiagID, Type,
                          Actions.getASTContext().getPrintingPolicy());
 
-      Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+      Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
       TypeResult Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
       if (Ty.isInvalid())
         break;

       if (isTypeIdUnambiguously()) {
         DeclSpec DS(AttrFactory);
         ParseSpecifierQualifierList(DS);
-        Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+        Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
         ParseDeclarator(DeclaratorInfo);
 
         SourceLocation LParenLoc = PP.getLocForEndOfToken(OpTok.getLocation());

     // Parse the type declarator.
     DeclSpec DS(AttrFactory);
     ParseSpecifierQualifierList(DS);
-    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
     ParseDeclarator(DeclaratorInfo);
 
     // If our type is followed by an identifier and either ':' or ']', then

   ParseSpecifierQualifierList(DS);
 
   // Parse the block-declarator.
-  Declarator DeclaratorInfo(DS, DeclaratorContext::BlockLiteralContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::BlockLiteral);
   DeclaratorInfo.setFunctionDefinitionKind(FDK_Definition);
   ParseDeclarator(DeclaratorInfo);
 

 
   // Parse the return type if present.
   DeclSpec DS(AttrFactory);
-  Declarator ParamInfo(DS, DeclaratorContext::BlockLiteralContext);
+  Declarator ParamInfo(DS, DeclaratorContext::BlockLiteral);
   ParamInfo.setFunctionDefinitionKind(FDK_Definition);
   // FIXME: Since the return type isn't actually parsed, it can't be used to
   // fill ParamInfo with an initial valid range, so do it manually.

clang/lib/Parse/ParseExprCXX.cpp

 
   // Parse lambda-declarator[opt].
   DeclSpec DS(AttrFactory);
-  Declarator D(DS, DeclaratorContext::LambdaExprContext);
+  Declarator D(DS, DeclaratorContext::LambdaExpr);
   TemplateParameterDepthRAII CurTemplateDepthTracker(TemplateParameterDepth);
   Actions.PushLambdaScope();
 

   ParseSpecifierQualifierList(DS);
 
   // Parse the abstract-declarator, if present.
-  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
   ParseDeclarator(DeclaratorInfo);
 
   SourceLocation RAngleBracketLoc = Tok.getLocation();

 /// In C++1z onwards, the type specifier can also be a template-name.
 ExprResult
 Parser::ParseCXXTypeConstructExpression(const DeclSpec &DS) {
-  Declarator DeclaratorInfo(DS, DeclaratorContext::FunctionalCastContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::FunctionalCast);
   ParsedType TypeRep = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo).get();
 
   assert((Tok.is(tok::l_paren) ||

     WarnOnInit();
     SourceLocation DeclStart = Tok.getLocation(), DeclEnd;
     DeclGroupPtrTy DG =
-        ParseSimpleDeclaration(DeclaratorContext::InitStmtContext, DeclEnd,
+        ParseSimpleDeclaration(DeclaratorContext::SelectionInit, DeclEnd,
                                attrs, /*RequireSemi=*/true);
     *InitStmt = Actions.ActOnDeclStmt(DG, DeclStart, DeclEnd);
     return ParseCXXCondition(nullptr, Loc, CK);

     assert(FRI && "should not parse a for range declaration here");
     SourceLocation DeclStart = Tok.getLocation(), DeclEnd;
     DeclGroupPtrTy DG = ParseSimpleDeclaration(
-        DeclaratorContext::ForContext, DeclEnd, attrs, false, FRI);
+        DeclaratorContext::ForInit, DeclEnd, attrs, false, FRI);
     FRI->LoopVar = Actions.ActOnDeclStmt(DG, DeclStart, Tok.getLocation());
     return Sema::ConditionResult();
   }

   ParseSpecifierQualifierList(DS, AS_none, DeclSpecContext::DSC_condition);
 
   // declarator
-  Declarator DeclaratorInfo(DS, DeclaratorContext::ConditionContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::Condition);
   ParseDeclarator(DeclaratorInfo);
 
   // simple-asm-expr[opt]

 
   // Parse the conversion-declarator, which is merely a sequence of
   // ptr-operators.
-  Declarator D(DS, DeclaratorContext::ConversionIdContext);
+  Declarator D(DS, DeclaratorContext::ConversionId);
   ParseDeclaratorInternal(D, /*DirectDeclParser=*/nullptr);
 
   // Finish up the type.

 
   SourceRange TypeIdParens;
   DeclSpec DS(AttrFactory);
-  Declarator DeclaratorInfo(DS, DeclaratorContext::CXXNewContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::CXXNew);
   if (Tok.is(tok::l_paren)) {
     // If it turns out to be a placement, we change the type location.
     BalancedDelimiterTracker T(*this, tok::l_paren);

       ParsedAttributes FirstArgAttrs(getAttrFactory());
       SourceLocation EllipsisLoc;
       llvm::SmallVector<DeclaratorChunk::ParamInfo, 2> LocalParameters;
-      ParseParameterDeclarationClause(DeclaratorContext::RequiresExprContext,
+      ParseParameterDeclarationClause(DeclaratorContext::RequiresExpr,
                                       FirstArgAttrs, LocalParameters,
                                       EllipsisLoc);
       if (EllipsisLoc.isValid())

   if (ParseAs >= CompoundLiteral) {
     // Parse the type declarator.
     DeclSpec DS(AttrFactory);
-    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
     {
       ColonProtectionRAIIObject InnerColonProtection(*this);
       ParseSpecifierQualifierList(DS);

   ParseSpecifierQualifierList(DS);
 
   // Parse the abstract-declarator, if present.
-  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
   ParseDeclarator(DeclaratorInfo);
 
   if (ExpectAndConsume(tok::comma)) {

clang/lib/Parse/ParseObjc.cpp

       if (Tok.isOneOf(tok::kw_static_assert, tok::kw__Static_assert)) {
         SourceLocation DeclEnd;
         allTUVariables.push_back(
-            ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs));
+            ParseDeclaration(DeclaratorContext::File, DeclEnd, attrs));
         continue;
       }
 

 ///
 void Parser::ParseObjCTypeQualifierList(ObjCDeclSpec &DS,
                                         DeclaratorContext Context) {
-  assert(Context == DeclaratorContext::ObjCParameterContext ||
-         Context == DeclaratorContext::ObjCResultContext);
+  assert(Context == DeclaratorContext::ObjCParameter ||
+         Context == DeclaratorContext::ObjCResult);
 
   while (1) {
     if (Tok.is(tok::code_completion)) {
       Actions.CodeCompleteObjCPassingType(getCurScope(), DS,
-                          Context == DeclaratorContext::ObjCParameterContext);
+                          Context == DeclaratorContext::ObjCParameter);
       return cutOffParsing();
     }
 

 ParsedType Parser::ParseObjCTypeName(ObjCDeclSpec &DS,
                                      DeclaratorContext context,
                                      ParsedAttributes *paramAttrs) {
-  assert(context == DeclaratorContext::ObjCParameterContext ||
-         context == DeclaratorContext::ObjCResultContext);
+  assert(context == DeclaratorContext::ObjCParameter ||
+         context == DeclaratorContext::ObjCResult);
   assert((paramAttrs != nullptr) ==
-         (context == DeclaratorContext::ObjCParameterContext));
+         (context == DeclaratorContext::ObjCParameter));
 
   assert(Tok.is(tok::l_paren) && "expected (");
 

     DeclSpec declSpec(AttrFactory);
     declSpec.setObjCQualifiers(&DS);
     DeclSpecContext dsContext = DeclSpecContext::DSC_normal;
-    if (context == DeclaratorContext::ObjCResultContext)
+    if (context == DeclaratorContext::ObjCResult)
       dsContext = DeclSpecContext::DSC_objc_method_result;
     ParseSpecifierQualifierList(declSpec, AS_none, dsContext);
     Declarator declarator(declSpec, context);

 
       // If we're parsing a parameter, steal all the decl attributes
       // and add them to the decl spec.
-      if (context == DeclaratorContext::ObjCParameterContext)
+      if (context == DeclaratorContext::ObjCParameter)
         takeDeclAttributes(*paramAttrs, declarator);
     }
   }

   ParsedType ReturnType;
   ObjCDeclSpec DSRet;
   if (Tok.is(tok::l_paren))
-    ReturnType = ParseObjCTypeName(DSRet, DeclaratorContext::ObjCResultContext,
+    ReturnType = ParseObjCTypeName(DSRet, DeclaratorContext::ObjCResult,
                                    nullptr);
 
   // If attributes exist before the method, parse them.

     ArgInfo.Type = nullptr;
     if (Tok.is(tok::l_paren)) // Parse the argument type if present.
       ArgInfo.Type = ParseObjCTypeName(ArgInfo.DeclSpec,
-                                       DeclaratorContext::ObjCParameterContext,
+                                       DeclaratorContext::ObjCParameter,
                                        &paramAttrs);
 
     // If attributes exist before the argument name, parse them.

     DeclSpec DS(AttrFactory);
     ParseDeclarationSpecifiers(DS);
     // Parse the declarator.
-    Declarator ParmDecl(DS, DeclaratorContext::PrototypeContext);
+    Declarator ParmDecl(DS, DeclaratorContext::Prototype);
     ParseDeclarator(ParmDecl);
     IdentifierInfo *ParmII = ParmDecl.getIdentifier();
     Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDecl);

                          typeArg, Actions.getASTContext().getPrintingPolicy());
 
       // Form a declarator to turn this into a type.
-      Declarator D(DS, DeclaratorContext::TypeNameContext);
+      Declarator D(DS, DeclaratorContext::TypeName);
       TypeResult fullTypeArg = Actions.ActOnTypeName(getCurScope(), D);
       if (fullTypeArg.isUsable()) {
         typeArgs.push_back(fullTypeArg.get());

         if (Tok.isNot(tok::ellipsis)) {
           DeclSpec DS(AttrFactory);
           ParseDeclarationSpecifiers(DS);
-          Declarator ParmDecl(DS, DeclaratorContext::ObjCCatchContext);
+          Declarator ParmDecl(DS, DeclaratorContext::ObjCCatch);
           ParseDeclarator(ParmDecl);
 
           // Inform the actions module about the declarator, so it

   // We have a class message. Turn the simple-type-specifier or
   // typename-specifier we parsed into a type and parse the
   // remainder of the class message.
-  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
+  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
   TypeResult Type = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
   if (Type.isInvalid())
     return true;

clang/lib/Parse/ParseOpenMP.cpp

     ColonProtectionRAIIObject ColonRAII(*this);
     SourceRange Range;
     TypeResult TR =
-        ParseTypeName(&Range, DeclaratorContext::PrototypeContext, AS);
+        ParseTypeName(&Range, DeclaratorContext::Prototype, AS);
     if (TR.isUsable()) {
       QualType ReductionType =
           Actions.ActOnOpenMPDeclareReductionType(Range.getBegin(), TR);

   ParseSpecifierQualifierList(DS, AS, DSC);
 
   // Parse the declarator.
-  DeclaratorContext Context = DeclaratorContext::PrototypeContext;
+  DeclaratorContext Context = DeclaratorContext::Prototype;
   Declarator DeclaratorInfo(DS, Context);
   ParseDeclarator(DeclaratorInfo);
   Range = DeclaratorInfo.getSourceRange();

clang/lib/Parse/ParseStmt.cpp

       DeclGroupPtrTy Decl;
       if (GNUAttributeLoc.isValid()) {
         DeclStart = GNUAttributeLoc;
-        Decl = ParseDeclaration(DeclaratorContext::BlockContext, DeclEnd, Attrs,
+        Decl = ParseDeclaration(DeclaratorContext::Block, DeclEnd, Attrs,
                                 &GNUAttributeLoc);
       } else {
         Decl =
-            ParseDeclaration(DeclaratorContext::BlockContext, DeclEnd, Attrs);
+            ParseDeclaration(DeclaratorContext::Block, DeclEnd, Attrs);
       }
       if (Attrs.Range.getBegin().isValid())
         DeclStart = Attrs.Range.getBegin();

 
         SourceLocation DeclStart = Tok.getLocation(), DeclEnd;
         DeclGroupPtrTy Res =
-            ParseDeclaration(DeclaratorContext::BlockContext, DeclEnd, attrs);
+            ParseDeclaration(DeclaratorContext::Block, DeclEnd, attrs);
         R = Actions.ActOnDeclStmt(Res, DeclStart, DeclEnd);
       } else {
         // Otherwise this was a unary __extension__ marker.

 
     SourceLocation DeclStart = Tok.getLocation(), DeclEnd;
     DeclGroupPtrTy DG = ParseSimpleDeclaration(
-        DeclaratorContext::ForContext, DeclEnd, attrs, false,
+        DeclaratorContext::ForInit, DeclEnd, attrs, false,
         MightBeForRangeStmt ? &ForRangeInfo : nullptr);
     FirstPart = Actions.ActOnDeclStmt(DG, DeclStart, Tok.getLocation());
     if (ForRangeInfo.ParsedForRangeDecl()) {

     if (ParseCXXTypeSpecifierSeq(DS))
       return StmtError();
 
-    Declarator ExDecl(DS, DeclaratorContext::CXXCatchContext);
+    Declarator ExDecl(DS, DeclaratorContext::CXXCatch);
     ParseDeclarator(ExDecl);
     ExceptionDecl = Actions.ActOnExceptionDeclarator(getCurScope(), ExDecl);
   } else

clang/lib/Parse/ParseTemplate.cpp

     return ParseStaticAssertDeclaration(DeclEnd);
   }
 
-  if (Context == DeclaratorContext::MemberContext) {
+  if (Context == DeclaratorContext::Member) {
     // We are parsing a member template.
     ParseCXXClassMemberDeclaration(AS, AccessAttrs, TemplateInfo,
                                    &DiagsFromTParams);

     // Function definitions are only allowed at file scope and in C++ classes.
     // The C++ inline method definition case is handled elsewhere, so we only
     // need to handle the file scope definition case.
-    if (Context != DeclaratorContext::FileContext) {
+    if (Context != DeclaratorContext::File) {
       Diag(Tok, diag::err_function_definition_not_allowed);
       SkipMalformedDecl();
       return nullptr;

     // probably meant to write the type of a NTTP.
     DeclSpec DS(getAttrFactory());
     DS.SetTypeSpecError();
-    Declarator D(DS, DeclaratorContext::TemplateParamContext);
+    Declarator D(DS, DeclaratorContext::TemplateParam);
     D.SetIdentifier(nullptr, Tok.getLocation());
     D.setInvalidType(true);
     NamedDecl *ErrorParam = Actions.ActOnNonTypeTemplateParameter(

   ParsedType DefaultArg;
   if (TryConsumeToken(tok::equal, EqualLoc))
     DefaultArg = ParseTypeName(/*Range=*/nullptr,
-                               DeclaratorContext::TemplateTypeArgContext)
+                               DeclaratorContext::TemplateTypeArg)
                      .get();
 
   NamedDecl *NewDecl = Actions.ActOnTypeParameter(getCurScope(),

                              DeclSpecContext::DSC_template_param);
 
   // Parse this as a typename.
-  Declarator ParamDecl(DS, DeclaratorContext::TemplateParamContext);
+  Declarator ParamDecl(DS, DeclaratorContext::TemplateParam);
   ParseDeclarator(ParamDecl);
   if (DS.getTypeSpecType() == DeclSpec::TST_unspecified) {
     Diag(Tok.getLocation(), diag::err_expected_template_parameter);

     /*ExprContext=*/Sema::ExpressionEvaluationContextRecord::EK_TemplateArgument);
   if (isCXXTypeId(TypeIdAsTemplateArgument)) {
     TypeResult TypeArg = ParseTypeName(
-        /*Range=*/nullptr, DeclaratorContext::TemplateArgContext);
+        /*Range=*/nullptr, DeclaratorContext::TemplateArg);
     return Actions.ActOnTemplateTypeArgument(TypeArg);
   }
 

clang/lib/Parse/Parser.cpp

     // A function definition cannot start with any of these keywords.
     {
       SourceLocation DeclEnd;
-      return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
+      return ParseDeclaration(DeclaratorContext::File, DeclEnd, attrs);
     }
 
   case tok::kw_static:

       Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
         << 0;
       SourceLocation DeclEnd;
-      return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
+      return ParseDeclaration(DeclaratorContext::File, DeclEnd, attrs);
     }
     goto dont_know;
 

       // Inline namespaces. Allowed as an extension even in C++03.
       if (NextKind == tok::kw_namespace) {
         SourceLocation DeclEnd;
-        return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
+        return ParseDeclaration(DeclaratorContext::File, DeclEnd, attrs);
       }
 
       // Parse (then ignore) 'inline' prior to a template instantiation. This is

         Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
           << 1;
         SourceLocation DeclEnd;
-        return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
+        return ParseDeclaration(DeclaratorContext::File, DeclEnd, attrs);
       }
     }
     goto dont_know;

              diag::ext_extern_template) << SourceRange(ExternLoc, TemplateLoc);
       SourceLocation DeclEnd;
       return Actions.ConvertDeclToDeclGroup(
-          ParseExplicitInstantiation(DeclaratorContext::FileContext, ExternLoc,
+          ParseExplicitInstantiation(DeclaratorContext::File, ExternLoc,
                                      TemplateLoc, DeclEnd, attrs));
     }
     goto dont_know;

   if (getLangOpts().CPlusPlus && isTokenStringLiteral() &&
       DS.getStorageClassSpec() == DeclSpec::SCS_extern &&
       DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) {
-    Decl *TheDecl = ParseLinkage(DS, DeclaratorContext::FileContext);
+    Decl *TheDecl = ParseLinkage(DS, DeclaratorContext::File);
     return Actions.ConvertDeclToDeclGroup(TheDecl);
   }
 
-  return ParseDeclGroup(DS, DeclaratorContext::FileContext);
+  return ParseDeclGroup(DS, DeclaratorContext::File);
 }
 
 Parser::DeclGroupPtrTy

     }
 
     // Parse the first declarator attached to this declspec.
-    Declarator ParmDeclarator(DS, DeclaratorContext::KNRTypeListContext);
+    Declarator ParmDeclarator(DS, DeclaratorContext::KNRTypeList);
     ParseDeclarator(ParmDeclarator);
 
     // Handle the full declarator list.

clang/lib/Sema/DeclSpec.cpp

 }
 
 bool Declarator::isStaticMember() {
-  assert(getContext() == DeclaratorContext::MemberContext);
+  assert(getContext() == DeclaratorContext::Member);
   return getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static ||
          (getName().Kind == UnqualifiedIdKind::IK_OperatorFunctionId &&
           CXXMethodDecl::isStaticOverloadedOperator(

clang/lib/Sema/SemaCodeComplete.cpp

   AddTypeQualifierResults(DS, Results, LangOpts);
   if (LangOpts.CPlusPlus11) {
     Results.AddResult("noexcept");
-    if (D.getContext() == DeclaratorContext::MemberContext &&
+    if (D.getContext() == DeclaratorContext::Member &&
         !D.isCtorOrDtor() && !D.isStaticMember()) {
       if (!VS || !VS->isFinalSpecified())
         Results.AddResult("final");

clang/lib/Sema/SemaDecl.cpp

     Diag(DS.getBeginLoc(), diag::ext_no_declarators) << DS.getSourceRange();
 
   // Mock up a declarator.
-  Declarator Dc(DS, DeclaratorContext::MemberContext);
+  Declarator Dc(DS, DeclaratorContext::Member);
   TypeSourceInfo *TInfo = GetTypeForDeclarator(Dc, S);
   assert(TInfo && "couldn't build declarator info for anonymous struct/union");
 

   assert(Record && "expected a record!");
 
   // Mock up a declarator.
-  Declarator Dc(DS, DeclaratorContext::TypeNameContext);
+  Declarator Dc(DS, DeclaratorContext::TypeName);
   TypeSourceInfo *TInfo = GetTypeForDeclarator(Dc, S);
   assert(TInfo && "couldn't build declarator info for anonymous struct");
 

   DS.SetTypeSpecType(DeclSpec::TST_auto, IdentLoc, PrevSpec, DiagID,
                      getPrintingPolicy());
 
-  Declarator D(DS, DeclaratorContext::ForContext);
+  Declarator D(DS, DeclaratorContext::ForInit);
   D.SetIdentifier(Ident, IdentLoc);
   D.takeAttributes(Attrs, AttrEnd);
 

         // Use the identifier location for the type source range.
         DS.SetRangeStart(FTI.Params[i].IdentLoc);
         DS.SetRangeEnd(FTI.Params[i].IdentLoc);
-        Declarator ParamD(DS, DeclaratorContext::KNRTypeListContext);
+        Declarator ParamD(DS, DeclaratorContext::KNRTypeList);
         ParamD.SetIdentifier(FTI.Params[i].Ident, FTI.Params[i].IdentLoc);
         FTI.Params[i].Param = ActOnParamDeclarator(S, ParamD);
       }

   (void)Error; // Silence warning.
   assert(!Error && "Error setting up implicit decl!");
   SourceLocation NoLoc;
-  Declarator D(DS, DeclaratorContext::BlockContext);
+  Declarator D(DS, DeclaratorContext::Block);
   D.AddTypeInfo(DeclaratorChunk::getFunction(/*HasProto=*/false,
                                              /*IsAmbiguous=*/false,
                                              /*LParenLoc=*/NoLoc,

clang/lib/Sema/SemaDeclCXX.cpp

   Diag(Decomp.getLSquareLoc(),
        !getLangOpts().CPlusPlus17
            ? diag::ext_decomp_decl
-           : D.getContext() == DeclaratorContext::ConditionContext
+           : D.getContext() == DeclaratorContext::Condition
                  ? diag::ext_decomp_decl_cond
                  : diag::warn_cxx14_compat_decomp_decl)
       << Decomp.getSourceRange();

   // Try to convert the decl specifier to a type.  This works for
   // friend templates because ActOnTag never produces a ClassTemplateDecl
   // for a TUK_Friend.
-  Declarator TheDeclarator(DS, DeclaratorContext::MemberContext);
+  Declarator TheDeclarator(DS, DeclaratorContext::Member);
   TypeSourceInfo *TSI = GetTypeForDeclarator(TheDeclarator, S);
   QualType T = TSI->getType();
   if (TheDeclarator.isInvalidType())

clang/lib/Sema/SemaDeclObjC.cpp

     DS.SetRangeEnd(loc);
 
     // Form the declarator.
-    Declarator D(DS, DeclaratorContext::TypeNameContext);
+    Declarator D(DS, DeclaratorContext::TypeName);
 
     // If we have a typedef of an Objective-C class type that is missing a '*',
     // add the '*'.

clang/lib/Sema/SemaExpr.cpp

                                Scope *CurScope) {
   assert(ParamInfo.getIdentifier() == nullptr &&
          "block-id should have no identifier!");
-  assert(ParamInfo.getContext() == DeclaratorContext::BlockLiteralContext);
+  assert(ParamInfo.getContext() == DeclaratorContext::BlockLiteral);
   BlockScopeInfo *CurBlock = getCurBlock();
 
   TypeSourceInfo *Sig = GetTypeForDeclarator(ParamInfo, CurScope);

clang/lib/Sema/SemaType.cpp

 /// isOmittedBlockReturnType - Return true if this declarator is missing a
 /// return type because this is a omitted return type on a block literal.
 static bool isOmittedBlockReturnType(const Declarator &D) {
-  if (D.getContext() != DeclaratorContext::BlockLiteralContext ||
+  if (D.getContext() != DeclaratorContext::BlockLiteral ||
       D.getDeclSpec().hasTypeSpecifier())
     return false;
 

     // The declspec is always missing in a lambda expr context; it is either
     // specified with a trailing return type or inferred.
     if (S.getLangOpts().CPlusPlus14 &&
-        declarator.getContext() == DeclaratorContext::LambdaExprContext) {
+        declarator.getContext() == DeclaratorContext::LambdaExpr) {
       // In C++1y, a lambda's implicit return type is 'auto'.
       Result = Context.getAutoDeductType();
       break;
     } else if (declarator.getContext() ==
-                   DeclaratorContext::LambdaExprContext ||
+                   DeclaratorContext::LambdaExpr ||
                checkOmittedBlockReturnType(S, declarator,
                                            Context.DependentTy)) {
       Result = Context.DependentTy;

 
   // Before we process any type attributes, synthesize a block literal
   // function declarator if necessary.
-  if (declarator.getContext() == DeclaratorContext::BlockLiteralContext)
+  if (declarator.getContext() == DeclaratorContext::BlockLiteral)
     maybeSynthesizeBlockSignature(state, Result);
 
   // Apply any type attributes from the decl spec.  This may cause the

     bool IsDeducedReturnType = false;
 
     switch (D.getContext()) {
-    case DeclaratorContext::LambdaExprContext:
+    case DeclaratorContext::LambdaExpr:
       // Declared return type of a lambda-declarator is implicit and is always
       // 'auto'.
       break;
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
       Error = 0;
       break;
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::RequiresExpr:
       Error = 22;
       break;
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext: {
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter: {
       InventedTemplateParameterInfo *Info = nullptr;
-      if (D.getContext() == DeclaratorContext::PrototypeContext) {
+      if (D.getContext() == DeclaratorContext::Prototype) {
         // With concepts we allow 'auto' in function parameters.
         if (!SemaRef.getLangOpts().CPlusPlus20 || !Auto ||
             Auto->getKeyword() != AutoTypeKeyword::Auto) {

         T = InventTemplateParameter(state, T, nullptr, Auto, *Info).first;
       break;
     }
-    case DeclaratorContext::MemberContext: {
+    case DeclaratorContext::Member: {
       if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static ||
           D.isFunctionDeclarator())
         break;

         Error = 20; // Friend type
       break;
     }
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
       Error = 7; // Exception declaration
       break;
-    case DeclaratorContext::TemplateParamContext:
+    case DeclaratorContext::TemplateParam:
       if (isa<DeducedTemplateSpecializationType>(Deduced) &&
           !SemaRef.getLangOpts().CPlusPlus20)
         Error = 19; // Template parameter (until C++20)
       else if (!SemaRef.getLangOpts().CPlusPlus17)
         Error = 8; // Template parameter (until C++17)
       break;
-    case DeclaratorContext::BlockLiteralContext:
+    case DeclaratorContext::BlockLiteral:
       Error = 9; // Block literal
       break;
-    case DeclaratorContext::TemplateArgContext:
+    case DeclaratorContext::TemplateArg:
       // Within a template argument list, a deduced template specialization
       // type will be reinterpreted as a template template argument.
       if (isa<DeducedTemplateSpecializationType>(Deduced) &&

           D.getDeclSpec().getParsedSpecifiers() == DeclSpec::PQ_TypeSpecifier)
         break;
       LLVM_FALLTHROUGH;
-    case DeclaratorContext::TemplateTypeArgContext:
+    case DeclaratorContext::TemplateTypeArg:
       Error = 10; // Template type argument
       break;
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
       Error = 12; // Type alias
       break;
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
       if (!SemaRef.getLangOpts().CPlusPlus14 || !IsCXXAutoType)
         Error = 13; // Function return type
       IsDeducedReturnType = true;
       break;
-    case DeclaratorContext::ConversionIdContext:
+    case DeclaratorContext::ConversionId:
       if (!SemaRef.getLangOpts().CPlusPlus14 || !IsCXXAutoType)
         Error = 14; // conversion-type-id
       IsDeducedReturnType = true;
       break;
-    case DeclaratorContext::FunctionalCastContext:
+    case DeclaratorContext::FunctionalCast:
       if (isa<DeducedTemplateSpecializationType>(Deduced))
         break;
       LLVM_FALLTHROUGH;
-    case DeclaratorContext::TypeNameContext:
+    case DeclaratorContext::TypeName:
       Error = 15; // Generic
       break;
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::ConditionContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::Condition:
       // FIXME: P0091R3 (erroneously) does not permit class template argument
       // deduction in conditions, for-init-statements, and other declarations
       // that are not simple-declarations.
       break;
-    case DeclaratorContext::CXXNewContext:
+    case DeclaratorContext::CXXNew:
       // FIXME: P0091R3 does not permit class template argument deduction here,
       // but we follow GCC and allow it anyway.
       if (!IsCXXAutoType && !isa<DeducedTemplateSpecializationType>(Deduced))
         Error = 17; // 'new' type
       break;
-    case DeclaratorContext::KNRTypeListContext:
+    case DeclaratorContext::KNRTypeList:
       Error = 18; // K&R function parameter
       break;
     }

 
       T = SemaRef.Context.IntTy;
       D.setInvalidType(true);
-    } else if (Auto && D.getContext() != DeclaratorContext::LambdaExprContext) {
+    } else if (Auto && D.getContext() != DeclaratorContext::LambdaExpr) {
       // If there was a trailing return type, we already got
       // warn_cxx98_compat_trailing_return_type in the parser.
       SemaRef.Diag(AutoRange.getBegin(),
                    D.getContext() ==
-                           DeclaratorContext::LambdaExprParameterContext
+                           DeclaratorContext::LambdaExprParameter
                        ? diag::warn_cxx11_compat_generic_lambda
                        : IsDeducedReturnType
                              ? diag::warn_cxx11_compat_deduced_return_type

     // or enumeration in a type-specifier-seq.
     unsigned DiagID = 0;
     switch (D.getContext()) {
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
       // Class and enumeration definitions are syntactically not allowed in
       // trailing return types.
       llvm_unreachable("parser should not have allowed this");
       break;
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
+    case DeclaratorContext::File:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
       // C++11 [dcl.type]p3:
       //   A type-specifier-seq shall not define a class or enumeration unless
       //   it appears in the type-id of an alias-declaration (7.1.3) that is not
       //   the declaration of a template-declaration.
-    case DeclaratorContext::AliasDeclContext:
+    case DeclaratorContext::AliasDecl:
       break;
-    case DeclaratorContext::AliasTemplateContext:
+    case DeclaratorContext::AliasTemplate:
       DiagID = diag::err_type_defined_in_alias_template;
       break;
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
       DiagID = diag::err_type_defined_in_type_specifier;
       break;
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::RequiresExpr:
       // C++ [dcl.fct]p6:
       //   Types shall not be defined in return or parameter types.
       DiagID = diag::err_type_defined_in_param_type;
       break;
-    case DeclaratorContext::ConditionContext:
+    case DeclaratorContext::Condition:
       // C++ 6.4p2:
       // The type-specifier-seq shall not contain typedef and shall not declare
       // a new class or enumeration.

 
   // Inside a condition, a direct initializer is not permitted. We allow one to
   // be parsed in order to give better diagnostics in condition parsing.
-  if (D.getContext() == DeclaratorContext::ConditionContext)
+  if (D.getContext() == DeclaratorContext::Condition)
     return;
 
   SourceRange ParenRange(DeclType.Loc, DeclType.EndLoc);

 
     case DeclaratorChunk::Function:
       // In a new-type-id, function chunks require parentheses.
-      if (D.getContext() == DeclaratorContext::CXXNewContext)
+      if (D.getContext() == DeclaratorContext::CXXNew)
         return;
       // FIXME: "A(f())" deserves a vexing-parse warning, not just a
       // redundant-parens warning, but we don't know whether the function

       // in a member pointer.
       IsCXXInstanceMethod =
           D.getTypeObject(I).Kind == DeclaratorChunk::MemberPointer;
-    } else if (D.getContext() == DeclaratorContext::LambdaExprContext) {
+    } else if (D.getContext() == DeclaratorContext::LambdaExpr) {
       // This can only be a call operator for a lambda, which is an instance
       // method.
       IsCXXInstanceMethod = true;

   // Does this declaration declare a typedef-name?
   bool IsTypedefName =
     D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef ||
-    D.getContext() == DeclaratorContext::AliasDeclContext ||
-    D.getContext() == DeclaratorContext::AliasTemplateContext;
+    D.getContext() == DeclaratorContext::AliasDecl ||
+    D.getContext() == DeclaratorContext::AliasTemplate;
 
   // Does T refer to a function type with a cv-qualifier or a ref-qualifier?
   bool IsQualifiedFunction = T->isFunctionProtoType() &&

   } else {
     bool isFunctionOrMethod = false;
     switch (auto context = state.getDeclarator().getContext()) {
-    case DeclaratorContext::ObjCParameterContext:
-    case DeclaratorContext::ObjCResultContext:
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
+    case DeclaratorContext::ObjCParameter:
+    case DeclaratorContext::ObjCResult:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
       isFunctionOrMethod = true;
       LLVM_FALLTHROUGH;
 
-    case DeclaratorContext::MemberContext:
+    case DeclaratorContext::Member:
       if (state.getDeclarator().isObjCIvar() && !isFunctionOrMethod) {
         complainAboutMissingNullability = CAMN_No;
         break;

 
       LLVM_FALLTHROUGH;
 
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::KNRTypeListContext: {
+    case DeclaratorContext::File:
+    case DeclaratorContext::KNRTypeList: {
       complainAboutMissingNullability = CAMN_Yes;
 
       // Nullability inference depends on the type and declarator.

           complainAboutInferringWithinChunk = wrappingKind;
           inferNullability = NullabilityKind::NonNull;
           inferNullabilityCS =
-              (context == DeclaratorContext::ObjCParameterContext ||
-               context == DeclaratorContext::ObjCResultContext);
+              (context == DeclaratorContext::ObjCParameter ||
+               context == DeclaratorContext::ObjCResult);
         }
         break;
 

       break;
     }
 
-    case DeclaratorContext::ConversionIdContext:
+    case DeclaratorContext::ConversionId:
       complainAboutMissingNullability = CAMN_Yes;
       break;
 
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::ConditionContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::TemplateParamContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::Condition:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::TemplateParam:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::RequiresExpr:
       // Don't infer in these contexts.
       break;
     }

       // array type, ...
       if (ASM == ArrayType::Static || ATI.TypeQuals) {
         if (!(D.isPrototypeContext() ||
-              D.getContext() == DeclaratorContext::KNRTypeListContext)) {
+              D.getContext() == DeclaratorContext::KNRTypeList)) {
           S.Diag(DeclType.Loc, diag::err_array_static_outside_prototype) <<
               (ASM == ArrayType::Static ? "'static'" : "type qualifier");
           // Remove the 'static' and the type qualifiers.

       // Allow arrays of auto if we are a generic lambda parameter.
       // i.e. [](auto (&array)[5]) { return array[0]; }; OK
       if (AT &&
-          D.getContext() != DeclaratorContext::LambdaExprParameterContext) {
+          D.getContext() != DeclaratorContext::LambdaExprParameter) {
         // We've already diagnosed this for decltype(auto).
         if (!AT->isDecltypeAuto())
           S.Diag(DeclType.Loc, diag::err_illegal_decl_array_of_auto)

                   << D.getSourceRange();
               D.setInvalidType(true);
             }
-          } else if (D.getContext() != DeclaratorContext::LambdaExprContext &&
+          } else if (D.getContext() != DeclaratorContext::LambdaExpr &&
                      (T.hasQualifiers() || !isa<AutoType>(T) ||
                       cast<AutoType>(T)->getKeyword() !=
                           AutoTypeKeyword::Auto ||

             // invent a template parameter for it, for cases like
             // `auto f() -> C auto` or `[](auto (*p) -> auto) {}`.
             InventedTemplateParameterInfo *InventedParamInfo = nullptr;
-            if (D.getContext() == DeclaratorContext::PrototypeContext)
+            if (D.getContext() == DeclaratorContext::Prototype)
               InventedParamInfo = &S.InventedParameterInfos.back();
             else if (D.getContext() ==
-                     DeclaratorContext::LambdaExprParameterContext)
+                     DeclaratorContext::LambdaExprParameter)
               InventedParamInfo = S.getCurLambda();
             if (InventedParamInfo) {
               std::tie(T, TInfo) = InventTemplateParameter(

         // Last processing chunk in block context means this function chunk
         // represents the block.
         if (chunkIndex == 0 &&
-            D.getContext() == DeclaratorContext::BlockLiteralContext)
+            D.getContext() == DeclaratorContext::BlockLiteral)
           diagID = diag::err_block_returning_array_function;
         S.Diag(DeclType.Loc, diagID) << T->isFunctionType() << T;
         T = Context.IntTy;

       if (IsTypedefName && FTI.getExceptionSpecType() && !LangOpts.CPlusPlus17)
         S.Diag(FTI.getExceptionSpecLocBeg(),
                diag::err_exception_spec_in_typedef)
-            << (D.getContext() == DeclaratorContext::AliasDeclContext ||
-                D.getContext() == DeclaratorContext::AliasTemplateContext);
+            << (D.getContext() == DeclaratorContext::AliasDecl ||
+                D.getContext() == DeclaratorContext::AliasTemplate);
 
       // If we see "T var();" or "T var(T());" at block scope, it is probably
       // an attempt to initialize a variable, not a function declaration.

                           .getScopeRep()
                           ->getKind() == NestedNameSpecifier::TypeSpec) ||
                  state.getDeclarator().getContext() ==
-                     DeclaratorContext::MemberContext ||
+                     DeclaratorContext::Member ||
                  state.getDeclarator().getContext() ==
-                     DeclaratorContext::LambdaExprContext;
+                     DeclaratorContext::LambdaExpr;
         };
 
         if (state.getSema().getLangOpts().OpenCLCPlusPlus && IsClassMember()) {

     if (D.getName().getKind() == UnqualifiedIdKind::IK_DeductionGuideName)
       Kind = DeductionGuide;
     else if (!D.getCXXScopeSpec().isSet()) {
-      if ((D.getContext() == DeclaratorContext::MemberContext ||
-           D.getContext() == DeclaratorContext::LambdaExprContext) &&
+      if ((D.getContext() == DeclaratorContext::Member ||
+           D.getContext() == DeclaratorContext::LambdaExpr) &&
           !D.getDeclSpec().isFriendSpecified())
         Kind = Member;
     } else {

         !(Kind == Member &&
           D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_static) &&
         !IsTypedefName &&
-        D.getContext() != DeclaratorContext::TemplateArgContext &&
-        D.getContext() != DeclaratorContext::TemplateTypeArgContext) {
+        D.getContext() != DeclaratorContext::TemplateArg &&
+        D.getContext() != DeclaratorContext::TemplateTypeArg) {
       SourceLocation Loc = D.getBeginLoc();
       SourceRange RemovalRange;
       unsigned I;

   // C++2a [dcl.fct]p4:
   //   A parameter with volatile-qualified type is deprecated
   if (T.isVolatileQualified() && S.getLangOpts().CPlusPlus20 &&
-      (D.getContext() == DeclaratorContext::PrototypeContext ||
-       D.getContext() == DeclaratorContext::LambdaExprParameterContext))
+      (D.getContext() == DeclaratorContext::Prototype ||
+       D.getContext() == DeclaratorContext::LambdaExprParameter))
     S.Diag(D.getIdentifierLoc(), diag::warn_deprecated_volatile_param) << T;
 
   // If there was an ellipsis in the declarator, the declaration declares a

     //   only be used in a parameter-declaration. Such a parameter-declaration
     //   is a parameter pack (14.5.3). [...]
     switch (D.getContext()) {
-    case DeclaratorContext::PrototypeContext:
-    case DeclaratorContext::LambdaExprParameterContext:
-    case DeclaratorContext::RequiresExprContext:
+    case DeclaratorContext::Prototype:
+    case DeclaratorContext::LambdaExprParameter:
+    case DeclaratorContext::RequiresExpr:
       // C++0x [dcl.fct]p13:
       //   [...] When it is part of a parameter-declaration-clause, the
       //   parameter pack is a function parameter pack (14.5.3). The type T

         T = Context.getPackExpansionType(T, None, /*ExpectPackInType=*/false);
       }
       break;
-    case DeclaratorContext::TemplateParamContext:
+    case DeclaratorContext::TemplateParam:
       // C++0x [temp.param]p15:
       //   If a template-parameter is a [...] is a parameter-declaration that
       //   declares a parameter pack (8.3.5), then the template-parameter is a

                  : diag::ext_variadic_templates);
       break;
 
-    case DeclaratorContext::FileContext:
-    case DeclaratorContext::KNRTypeListContext:
-    case DeclaratorContext::ObjCParameterContext:  // FIXME: special diagnostic
+    case DeclaratorContext::File:
+    case DeclaratorContext::KNRTypeList:
+    case DeclaratorContext::ObjCParameter:  // FIXME: special diagnostic
                                                    // here?
-    case DeclaratorContext::ObjCResultContext:     // FIXME: special diagnostic
+    case DeclaratorContext::ObjCResult:     // FIXME: special diagnostic
                                                    // here?
-    case DeclaratorContext::TypeNameContext:
-    case DeclaratorContext::FunctionalCastContext:
-    case DeclaratorContext::CXXNewContext:
-    case DeclaratorContext::AliasDeclContext:
-    case DeclaratorContext::AliasTemplateContext:
-    case DeclaratorContext::MemberContext:
-    case DeclaratorContext::BlockContext:
-    case DeclaratorContext::ForContext:
-    case DeclaratorContext::InitStmtContext:
-    case DeclaratorContext::ConditionContext:
-    case DeclaratorContext::CXXCatchContext:
-    case DeclaratorContext::ObjCCatchContext:
-    case DeclaratorContext::BlockLiteralContext:
-    case DeclaratorContext::LambdaExprContext:
-    case DeclaratorContext::ConversionIdContext:
-    case DeclaratorContext::TrailingReturnContext:
-    case DeclaratorContext::TrailingReturnVarContext:
-    case DeclaratorContext::TemplateArgContext:
-    case DeclaratorContext::TemplateTypeArgContext:
+    case DeclaratorContext::TypeName:
+    case DeclaratorContext::FunctionalCast:
+    case DeclaratorContext::CXXNew:
+    case DeclaratorContext::AliasDecl:
+    case DeclaratorContext::AliasTemplate:
+    case DeclaratorContext::Member:
+    case DeclaratorContext::Block:
+    case DeclaratorContext::ForInit:
+    case DeclaratorContext::SelectionInit:
+    case DeclaratorContext::Condition:
+    case DeclaratorContext::CXXCatch:
+    case DeclaratorContext::ObjCCatch:
+    case DeclaratorContext::BlockLiteral:
+    case DeclaratorContext::LambdaExpr:
+    case DeclaratorContext::ConversionId:
+    case DeclaratorContext::TrailingReturn:
+    case DeclaratorContext::TrailingReturnVar:
+    case DeclaratorContext::TemplateArg:
+    case DeclaratorContext::TemplateTypeArg:
       // FIXME: We may want to allow parameter packs in block-literal contexts
       // in the future.
       S.Diag(D.getEllipsisLoc(),

   // to apply them to the actual parameter declaration.
   // Likewise, we don't want to do this for alias declarations, because
   // we are actually going to build a declaration from this eventually.
-  if (D.getContext() != DeclaratorContext::ObjCParameterContext &&
-      D.getContext() != DeclaratorContext::AliasDeclContext &&
-      D.getContext() != DeclaratorContext::AliasTemplateContext)
+  if (D.getContext() != DeclaratorContext::ObjCParameter &&
+      D.getContext() != DeclaratorContext::AliasDecl &&
+      D.getContext() != DeclaratorContext::AliasTemplate)
     checkUnusedDeclAttributes(D);
 
   if (getLangOpts().CPlusPlus) {