More header elimination.  The goal of all this is to allow Parser to
#include Sema.h while keeping all the AST declarations opaque.  That may
not be reasonably attainable, though.

llvm-svn: 111907
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 48f5b0d..2f7f54a 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -14,6 +14,8 @@
 #include "clang/Sema/Sema.h"
 #include "clang/Sema/Initialization.h"
 #include "clang/Sema/Lookup.h"
+#include "clang/Sema/CXXFieldCollector.h"
+#include "clang/Sema/Scope.h"
 #include "clang/AST/APValue.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/ASTContext.h"
@@ -479,6 +481,17 @@
   return IdResolver.isDeclInScope(D, Ctx, Context, S);
 }
 
+Scope *Sema::getScopeForDeclContext(Scope *S, DeclContext *DC) {
+  DeclContext *TargetDC = DC->getPrimaryContext();
+  do {
+    if (DeclContext *ScopeDC = (DeclContext*) S->getEntity())
+      if (ScopeDC->getPrimaryContext() == TargetDC)
+        return S;
+  } while ((S = S->getParent()));
+
+  return 0;
+}
+
 static bool isOutOfScopePreviousDeclaration(NamedDecl *,
                                             DeclContext*,
                                             ASTContext&);