llvm/llvm/include/llvm/ADT/EnumeratedArray.h

//===- llvm/ADT/EnumeratedArray.h - Enumerated Array-------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file defines an array type that can be indexed using scoped enum
/// values.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_ADT_ENUMERATEDARRAY_H
#define LLVM_ADT_ENUMERATEDARRAY_H

#include <cassert>
#include <iterator>

namespace llvm {

template <typename ValueType, typename Enumeration,
          Enumeration LargestEnum = Enumeration::Last, typename IndexType = int,
          IndexType Size = 1 + static_cast<IndexType>(LargestEnum)>
class EnumeratedArray { … };

} // namespace llvm

#endif // LLVM_ADT_ENUMERATEDARRAY_H