1 //===- llvm/Support/FileSystem/UniqueID.h - UniqueID for files --*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file is cut out of llvm/Support/FileSystem.h to allow UniqueID to be 10 // reused without bloating the includes. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_SUPPORT_FILESYSTEM_UNIQUEID_H 15 #define LLVM_SUPPORT_FILESYSTEM_UNIQUEID_H 16 17 #include <cstdint> 18 19 namespace llvm { 20 namespace sys { 21 namespace fs { 22 23 class UniqueID { 24 uint64_t Device; 25 uint64_t File; 26 27 public: 28 UniqueID() = default; UniqueID(uint64_t Device,uint64_t File)29 UniqueID(uint64_t Device, uint64_t File) : Device(Device), File(File) {} 30 31 bool operator==(const UniqueID &Other) const { 32 return Device == Other.Device && File == Other.File; 33 } 34 bool operator!=(const UniqueID &Other) const { return !(*this == Other); } 35 bool operator<(const UniqueID &Other) const { 36 /// Don't use std::tie since it bloats the compile time of this header. 37 if (Device < Other.Device) 38 return true; 39 if (Other.Device < Device) 40 return false; 41 return File < Other.File; 42 } 43 getDevice()44 uint64_t getDevice() const { return Device; } getFile()45 uint64_t getFile() const { return File; } 46 }; 47 48 } // end namespace fs 49 } // end namespace sys 50 } // end namespace llvm 51 52 #endif // LLVM_SUPPORT_FILESYSTEM_UNIQUEID_H 53