llvm/llvm/include/llvm/Support/FileSystem/UniqueID.h

//===- llvm/Support/FileSystem/UniqueID.h - UniqueID for files --*- 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
//
//===----------------------------------------------------------------------===//
//
// This file is cut out of llvm/Support/FileSystem.h to allow UniqueID to be
// reused without bloating the includes.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_FILESYSTEM_UNIQUEID_H
#define LLVM_SUPPORT_FILESYSTEM_UNIQUEID_H

#include "llvm/ADT/DenseMapInfo.h"
#include "llvm/ADT/Hashing.h"
#include <cstdint>
#include <utility>

namespace llvm {
namespace sys {
namespace fs {

class UniqueID { … };

} // end namespace fs
} // end namespace sys

// Support UniqueIDs as DenseMap keys.
template <> struct DenseMapInfo<llvm::sys::fs::UniqueID> { … };

} // end namespace llvm

#endif // LLVM_SUPPORT_FILESYSTEM_UNIQUEID_H