1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 #ifndef ANDROID_VINTF_VERSION_H 19 #define ANDROID_VINTF_VERSION_H 20 21 #include <stdint.h> 22 #include <string> 23 #include <utility> 24 25 namespace android { 26 namespace vintf { 27 28 struct Version { 29 VersionVersion30 constexpr Version() : Version(0u, 0u) {} VersionVersion31 constexpr Version(size_t mj, size_t mi) : majorVer(mj), minorVer(mi) {} VersionVersion32 constexpr Version(const std::pair<size_t, size_t>& pair) 33 : majorVer(pair.first), minorVer(pair.second) {} 34 35 size_t majorVer; 36 size_t minorVer; 37 38 inline bool operator==(const Version &other) const { 39 return majorVer == other.majorVer && minorVer == other.minorVer; 40 } 41 inline bool operator!=(const Version &other) const { 42 return !((*this) == other); 43 } 44 inline bool operator<(const Version &other) const { 45 if (majorVer < other.majorVer) 46 return true; 47 if (majorVer > other.majorVer) 48 return false; 49 return minorVer < other.minorVer; 50 } 51 inline bool operator>(const Version &other) const { 52 return other < (*this); 53 } 54 inline bool operator<=(const Version &other) const { 55 return !((*this) > other); 56 } 57 inline bool operator>=(const Version &other) const { 58 return !((*this) < other); 59 } 60 // Version(2, 1).minorAtLeast(Version(1, 0)) == false 61 // Version(2, 1).minorAtLeast(Version(2, 0)) == true 62 // Version(2, 1).minorAtLeast(Version(2, 1)) == true 63 // Version(2, 1).minorAtLeast(Version(2, 2)) == false minorAtLeastVersion64 inline bool minorAtLeast(const Version& other) const { 65 return majorVer == other.majorVer && minorVer >= other.minorVer; 66 } 67 }; 68 69 struct KernelVersion { 70 KernelVersionKernelVersion71 constexpr KernelVersion() : KernelVersion(0u, 0u, 0u) {} KernelVersionKernelVersion72 constexpr KernelVersion(size_t v, size_t mj, size_t mi) : 73 version(v), majorRev(mj), minorRev(mi) {} 74 75 size_t version; 76 size_t majorRev; 77 size_t minorRev; 78 79 inline bool operator==(const KernelVersion &other) const { 80 return version == other.version 81 && majorRev == other.majorRev 82 && minorRev == other.minorRev; 83 } 84 inline bool operator!=(const KernelVersion &other) const { 85 return !((*this) == other); 86 } 87 88 inline bool operator<(const KernelVersion& other) const { 89 if (version < other.version) return true; 90 if (version > other.version) return false; 91 if (majorRev < other.majorRev) return true; 92 if (majorRev > other.majorRev) return false; 93 return minorRev < other.minorRev; 94 } 95 dropMinorKernelVersion96 inline constexpr Version dropMinor() const { return Version{version, majorRev}; } 97 }; 98 99 } // namespace vintf 100 } // namespace android 101 102 #endif // ANDROID_VINTF_VERSION_H 103