| 1 | /* |
| 2 | SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org> |
| 3 | |
| 4 | SPDX-License-Identifier: LGPL-2.0-or-later |
| 5 | */ |
| 6 | |
| 7 | #ifndef MAPENTRY_P_H |
| 8 | #define MAPENTRY_P_H |
| 9 | |
| 10 | #include <algorithm> |
| 11 | #include <cstdint> |
| 12 | #include <iterator> |
| 13 | |
| 14 | #pragma pack(push) |
| 15 | #pragma pack(1) |
| 16 | |
| 17 | template<typename KeyType> |
| 18 | struct MapEntry { |
| 19 | KeyType key; |
| 20 | uint16_t value; |
| 21 | }; |
| 22 | |
| 23 | template<typename KeyType> |
| 24 | constexpr inline bool operator<(MapEntry<KeyType> lhs, MapEntry<KeyType> rhs) |
| 25 | { |
| 26 | return lhs.key < rhs.key; |
| 27 | } |
| 28 | |
| 29 | template<typename KeyType> |
| 30 | constexpr inline bool operator<(MapEntry<KeyType> lhs, KeyType rhs) |
| 31 | { |
| 32 | return lhs.key < rhs; |
| 33 | } |
| 34 | |
| 35 | template<typename KeyType> |
| 36 | constexpr inline bool operator<(KeyType lhs, MapEntry<KeyType> rhs) |
| 37 | { |
| 38 | return lhs < rhs.key; |
| 39 | } |
| 40 | |
| 41 | template<typename MapEntry, std::size_t N> |
| 42 | inline constexpr bool isSortedLookupTable(const MapEntry (&map)[N]) |
| 43 | { |
| 44 | #if __cplusplus > 201703L && defined(__GNUC__) && __GNUC__ > 9 && !defined(__clang__) |
| 45 | return std::is_sorted(std::begin(map), std::end(map)); |
| 46 | #else |
| 47 | (void)map; |
| 48 | return true; |
| 49 | #endif |
| 50 | } |
| 51 | |
| 52 | #pragma pack(pop) |
| 53 | |
| 54 | #endif |
| 55 | |