rename ExtensionRAIIObject.h -> RAIIObjectsForParser.h
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91008 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/RAIIObjectsForParser.h b/lib/Parse/RAIIObjectsForParser.h
new file mode 100644
index 0000000..d642da5
--- /dev/null
+++ b/lib/Parse/RAIIObjectsForParser.h
@@ -0,0 +1,41 @@
+//===--- RAIIObjectsForParser.h - RAII helpers for the parser ---*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines and implements the some simple RAII objects that are used
+// by the parser to manage bits in recursion.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_PARSE_RAII_OBJECTS_FOR_PARSER_H
+#define LLVM_CLANG_PARSE_RAII_OBJECTS_FOR_PARSER_H
+
+#include "clang/Parse/ParseDiagnostic.h"
+
+namespace clang {
+
+ /// ExtensionRAIIObject - This saves the state of extension warnings when
+ /// constructed and disables them. When destructed, it restores them back to
+ /// the way they used to be. This is used to handle __extension__ in the
+ /// parser.
+ class ExtensionRAIIObject {
+ void operator=(const ExtensionRAIIObject &); // DO NOT IMPLEMENT
+ ExtensionRAIIObject(const ExtensionRAIIObject&); // DO NOT IMPLEMENT
+ Diagnostic &Diags;
+ public:
+ ExtensionRAIIObject(Diagnostic &diags) : Diags(diags) {
+ Diags.IncrementAllExtensionsSilenced();
+ }
+
+ ~ExtensionRAIIObject() {
+ Diags.DecrementAllExtensionsSilenced();
+ }
+ };
+}
+
+#endif