Revert r311442 (Fix templated type alias completion when using global completion cache)

Failing Tests (2):
    Clang :: CXX/dcl.dcl/dcl.spec/dcl.type/p3-0x.cpp
    Clang :: SemaCXX/alias-template.cpp



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@311445 91177308-0d34-0410-b5e6-96231b3b80d8

Author: erikjv

lib/Frontend/ASTUnit.cpp

@@ -243,8 +243,7 @@ static unsigned getDeclShowContexts(const NamedDecl *ND,
 
   uint64_t Contexts = 0;
   if (isa<TypeDecl>(ND) || isa<ObjCInterfaceDecl>(ND) || 
-      isa<ClassTemplateDecl>(ND) || isa<TemplateTemplateParmDecl>(ND) ||
-      isa<TypeAliasTemplateDecl>(ND)) {
+      isa<ClassTemplateDecl>(ND) || isa<TemplateTemplateParmDecl>(ND)) {
     // Types can appear in these contexts.
     if (LangOpts.CPlusPlus || !isa<TagDecl>(ND))
       Contexts |= (1LL << CodeCompletionContext::CCC_TopLevel)

lib/Parse/ParseTemplate.cpp

@@ -198,11 +198,9 @@ Parser::ParseSingleDeclarationAfterTemplate(
 
   if (Tok.is(tok::kw_using)) {
     // FIXME: We should return the DeclGroup to the caller.
-    auto usingDeclPtr = ParseUsingDirectiveOrDeclaration(Context, TemplateInfo, DeclEnd,
-                                                         prefixAttrs);
-    if (!usingDeclPtr)
-      return nullptr;
-    return usingDeclPtr.get().getSingleDecl();
+    ParseUsingDirectiveOrDeclaration(Context, TemplateInfo, DeclEnd,
+                                     prefixAttrs);
+    return nullptr;
   }
 
   // Parse the declaration specifiers, stealing any diagnostics from
@@ -1025,8 +1023,8 @@ bool Parser::AnnotateTemplateIdToken(TemplateTy Template, TemplateNameKind TNK,
             ? OO_None
             : TemplateName.OperatorFunctionId.Operator;
 
-    TemplateIdAnnotation *TemplateId = TemplateIdAnnotation::Create(
-      SS, TemplateKWLoc, TemplateNameLoc, TemplateII, OpKind, Template, TNK,
+    TemplateIdAnnotation *TemplateId = TemplateIdAnnotation::Create(
+      SS, TemplateKWLoc, TemplateNameLoc, TemplateII, OpKind, Template, TNK,
       LAngleLoc, RAngleLoc, TemplateArgs, TemplateIds);
 
     Tok.setAnnotationValue(TemplateId);

test/Index/code-completion.cpp

@@ -37,16 +37,6 @@ Z::operator int() const {
   return 0;
 }
 
-template <typename T>
-struct Foo { T member; };
-
-template<typename T> using Bar = Foo<T>;
-
-void test_template_alias() {
-  // RUN: env CINDEXTEST_COMPLETION_CACHING=1 c-index-test -code-completion-at=%s:47:1 %s | FileCheck -check-prefix=CHECK-TEMPLATE-ALIAS %s
-
-}
-
 // CHECK-MEMBER: FieldDecl:{ResultType double}{TypedText member}
 // CHECK-MEMBER: FieldDecl:{ResultType int}{Text X::}{TypedText member}
 // CHECK-MEMBER: FieldDecl:{ResultType float}{Text Y::}{TypedText member}
@@ -98,5 +88,3 @@ void test_template_alias() {
 // CHECK-EXPR-NEXT: Class name
 // CHECK-EXPR-NEXT: Nested name specifier
 // CHECK-EXPR-NEXT: Objective-C interface
-
-// CHECK-TEMPLATE-ALIAS: AliasTemplateDecl:{TypedText Bar}{LeftAngle <}{Placeholder typename T}{RightAngle >} (50)