====================Apache-2.0 WITH LLVM-exception====================
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.


====================Apache-2.0 WITH LLVM-exception====================
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception


====================COPYRIGHT====================
  return isDigit(C) || isLower(C) || isUpper(C) || C == '_';