Instead of hanging a using declaration's target decls directly off the using

decl, create shadow declarations and put them in scope like normal.
Work in progress.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89048 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 7 deletions

diff --git a/lib/AST/DeclBase.cpp b/lib/AST/DeclBase.cpp
index 6cfdcdd3e5..da3b19df5b 100644
--- a/lib/AST/DeclBase.cpp
+++ b/lib/AST/DeclBase.cpp
@@ -97,7 +97,7 @@ bool Decl::isTemplateParameterPack() const {
 }
 
 bool Decl::isFunctionOrFunctionTemplate() const {
-  if (const UsingDecl *UD = dyn_cast<UsingDecl>(this))
+  if (const UsingShadowDecl *UD = dyn_cast<UsingShadowDecl>(this))
     return UD->getTargetDecl()->isFunctionOrFunctionTemplate();
 
   return isa<FunctionDecl>(this) || isa<FunctionTemplateDecl>(this);
@@ -189,10 +189,11 @@ ASTContext &Decl::getASTContext() const {
 
 unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
   switch (DeclKind) {
-    default:
-      if (DeclKind >= FunctionFirst && DeclKind <= FunctionLast)
-        return IDNS_Ordinary;
-      assert(0 && "Unknown decl kind!");
+    case Function:
+    case CXXMethod:
+    case CXXConstructor:
+    case CXXDestructor:
+    case CXXConversion:
     case OverloadedFunction:
     case Typedef:
     case EnumConstant:
@@ -200,8 +201,6 @@ unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
     case ImplicitParam:
     case ParmVar:
     case NonTypeTemplateParm:
-    case Using:
-    case UnresolvedUsing:
     case ObjCMethod:
     case ObjCContainer:
     case ObjCCategory:
@@ -210,6 +209,15 @@ unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
     case ObjCCompatibleAlias:
       return IDNS_Ordinary;
 
+    case UsingShadow:
+      return 0; // we'll actually overwrite this later
+
+    case UnresolvedUsing:
+      return IDNS_Tag | IDNS_Ordinary | IDNS_Using;
+
+    case Using:
+      return IDNS_Using;
+
     case ObjCProtocol:
       return IDNS_ObjCProtocol;
 
@@ -256,6 +264,8 @@ unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
     case ClassTemplatePartialSpecialization:
       return 0;
   }
+
+  return 0;
 }
 
 void Decl::addAttr(Attr *NewAttr) {