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//===--- ExtensionRAIIObject.h - Use RAII for __extension__ -----*- 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 ExtensionRAIIObject class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_PARSE_EXTENSION_RAII_OBJECT_H
#define LLVM_CLANG_PARSE_EXTENSION_RAII_OBJECT_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
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