Introduce a new representation for template template

parameters. Rather than storing them as either declarations (for the
non-dependent case) or expressions (for the dependent case), we now
(always) store them as TemplateNames. 

The primary change here is to add a new kind of TemplateArgument,
which stores a TemplateName. However, making that change ripples to
every switch on a TemplateArgument's kind, also affecting
TemplateArgumentLocInfo/TemplateArgumentLoc, default template
arguments for template template parameters, type-checking of template
template arguments, etc.

This change is light on testing. It should fix several pre-existing
problems with template template parameters, such as:
  - the inability to use dependent template names as template template
  arguments
  - template template parameter default arguments cannot be
  instantiation

However, there are enough pieces missing that more implementation is
required before we can adequately test template template parameters. 



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86777 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 6 deletions

diff --git a/lib/AST/DeclTemplate.cpp b/lib/AST/DeclTemplate.cpp
index 9ebc91afe1..0c14714812 100644
--- a/lib/AST/DeclTemplate.cpp
+++ b/lib/AST/DeclTemplate.cpp
@@ -220,7 +220,7 @@ QualType ClassTemplateDecl::getInjectedClassNameType(ASTContext &Context) {
       TemplateArgs.push_back(TemplateArgument(E));
     } else {
       TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*Param);
-      TemplateArgs.push_back(TemplateArgument(TTP));
+      TemplateArgs.push_back(TemplateArgument(TemplateName(TTP)));
     }
   }
 
@@ -285,11 +285,6 @@ TemplateTemplateParmDecl::Create(ASTContext &C, DeclContext *DC,
   return new (C) TemplateTemplateParmDecl(DC, L, D, P, Id, Params);
 }
 
-SourceLocation TemplateTemplateParmDecl::getDefaultArgumentLoc() const {
-  return DefaultArgument? DefaultArgument->getSourceRange().getBegin()
-                        : SourceLocation();
-}
-
 //===----------------------------------------------------------------------===//
 // TemplateArgumentListBuilder Implementation
 //===----------------------------------------------------------------------===//