-ms-extensions: Implement __super scope specifier (PR13236).

We build a NestedNameSpecifier that records the CXXRecordDecl in which
__super appeared. Name lookup is performed in all base classes of the
recorded CXXRecordDecl. Use of __super is allowed only inside class and
member function scope.

llvm-svn: 218484

1 files changed, 11 insertions, 1 deletions

diff --git a/clang/lib/Parse/ParseExprCXX.cpp b/clang/lib/Parse/ParseExprCXX.cpp
index cf0e4ce5c0c..8f22f5609e6 100644
--- a/clang/lib/Parse/ParseExprCXX.cpp
+++ b/clang/lib/Parse/ParseExprCXX.cpp
@@ -218,7 +218,7 @@ bool Parser::ParseOptionalCXXScopeSpecifier(CXXScopeSpec &SS,
       return false;
 
     // '::' - Global scope qualifier.
-    if (Actions.ActOnCXXGlobalScopeSpecifier(getCurScope(), ConsumeToken(), SS))
+    if (Actions.ActOnCXXGlobalScopeSpecifier(ConsumeToken(), SS))
       return true;
 
     CheckForLParenAfterColonColon();
@@ -226,6 +226,16 @@ bool Parser::ParseOptionalCXXScopeSpecifier(CXXScopeSpec &SS,
     HasScopeSpecifier = true;
   }
 
+  if (Tok.is(tok::kw___super)) {
+    SourceLocation SuperLoc = ConsumeToken();
+    if (!Tok.is(tok::coloncolon)) {
+      Diag(Tok.getLocation(), diag::err_expected_coloncolon_after_super);
+      return true;
+    }
+
+    return Actions.ActOnSuperScopeSpecifier(SuperLoc, ConsumeToken(), SS);
+  }
+
   bool CheckForDestructor = false;
   if (MayBePseudoDestructor && *MayBePseudoDestructor) {
     CheckForDestructor = true;