| | | 1 | | using System; |
| | | 2 | | using System.Collections; |
| | | 3 | | using System.Collections.Generic; |
| | | 4 | | |
| | | 5 | | public readonly struct KeyValueSetTriplet<TKey1, TKey2, TValue> |
| | | 6 | | { |
| | | 7 | | public readonly TKey1 key1; |
| | | 8 | | public readonly TKey2 key2; |
| | | 9 | | public readonly TValue value; |
| | | 10 | | |
| | | 11 | | public KeyValueSetTriplet(TKey1 key1, TKey2 key2, TValue value) |
| | | 12 | | { |
| | 248 | 13 | | this.key1 = key1; |
| | 248 | 14 | | this.key2 = key2; |
| | 248 | 15 | | this.value = value; |
| | 248 | 16 | | } |
| | | 17 | | } |
| | | 18 | | |
| | | 19 | | public interface IReadOnlyDualKeyValueSet<TKey1, TKey2, TValue> : IEnumerable<KeyValueSetTriplet<TKey1, TKey2, TValue>> |
| | | 20 | | { |
| | | 21 | | TValue this[TKey1 key1, TKey2 key2] { get; } |
| | | 22 | | int Count { get; } |
| | | 23 | | IReadOnlyList<KeyValueSetTriplet<TKey1, TKey2, TValue>> Pairs { get; } |
| | | 24 | | bool ContainsKey(TKey1 key1, TKey2 key2); |
| | | 25 | | bool TryGetValue(TKey1 key1, TKey2 key2, out TValue value); |
| | | 26 | | } |
| | | 27 | | |
| | | 28 | | public class DualKeyValueSet<TKey1, TKey2, TValue> : IReadOnlyDualKeyValueSet<TKey1, TKey2, TValue> |
| | | 29 | | { |
| | | 30 | | private readonly struct KeyPair |
| | | 31 | | { |
| | | 32 | | public readonly TKey1 key1; |
| | | 33 | | public readonly TKey2 key2; |
| | | 34 | | |
| | | 35 | | public KeyPair(TKey1 key1, TKey2 key2) |
| | | 36 | | { |
| | | 37 | | this.key1 = key1; |
| | | 38 | | this.key2 = key2; |
| | | 39 | | } |
| | | 40 | | } |
| | | 41 | | |
| | | 42 | | private readonly Dictionary<KeyPair, int> indexer; |
| | | 43 | | private readonly List<KeyValueSetTriplet<TKey1, TKey2, TValue>> pairs; |
| | | 44 | | |
| | | 45 | | public IReadOnlyList<KeyValueSetTriplet<TKey1, TKey2, TValue>> Pairs => pairs; |
| | | 46 | | |
| | | 47 | | public int Count => pairs.Count; |
| | | 48 | | |
| | | 49 | | public TValue this[TKey1 key1, TKey2 key2] |
| | | 50 | | { |
| | | 51 | | set => AddInternal(key1, key2, value, false); |
| | | 52 | | get |
| | | 53 | | { |
| | | 54 | | TryGetValue(key1, key2, out TValue value); |
| | | 55 | | return value; |
| | | 56 | | } |
| | | 57 | | } |
| | | 58 | | |
| | | 59 | | public DualKeyValueSet() : this(0) { } |
| | | 60 | | |
| | | 61 | | public DualKeyValueSet(int capacity) |
| | | 62 | | { |
| | | 63 | | indexer = new Dictionary<KeyPair, int>(capacity); |
| | | 64 | | pairs = new List<KeyValueSetTriplet<TKey1, TKey2, TValue>>(capacity); |
| | | 65 | | } |
| | | 66 | | |
| | | 67 | | public bool ContainsKey(TKey1 key1, TKey2 key2) |
| | | 68 | | { |
| | | 69 | | KeyPair keyPair = new KeyPair(key1, key2); |
| | | 70 | | return indexer.ContainsKey(keyPair); |
| | | 71 | | } |
| | | 72 | | |
| | | 73 | | public bool TryGetValue(TKey1 key1, TKey2 key2, out TValue value) |
| | | 74 | | { |
| | | 75 | | KeyPair keyPair = new KeyPair(key1, key2); |
| | | 76 | | if (!indexer.TryGetValue(keyPair, out int index)) |
| | | 77 | | { |
| | | 78 | | value = default; |
| | | 79 | | return false; |
| | | 80 | | } |
| | | 81 | | value = pairs[index].value; |
| | | 82 | | return true; |
| | | 83 | | } |
| | | 84 | | |
| | | 85 | | public void Add(TKey1 key1, TKey2 key2, TValue value) |
| | | 86 | | { |
| | | 87 | | AddInternal(key1, key2, value, true); |
| | | 88 | | } |
| | | 89 | | |
| | | 90 | | public void RemoveAt(int index) |
| | | 91 | | { |
| | | 92 | | int count = Count; |
| | | 93 | | if (index >= count || index < 0) |
| | | 94 | | { |
| | | 95 | | throw new IndexOutOfRangeException(); |
| | | 96 | | } |
| | | 97 | | |
| | | 98 | | TKey1 key1 = pairs[index].key1; |
| | | 99 | | TKey2 key2 = pairs[index].key2; |
| | | 100 | | |
| | | 101 | | if (count > 1 && index < count - 1) |
| | | 102 | | { |
| | | 103 | | int lastValueIndex = count - 1; |
| | | 104 | | pairs[index] = pairs[lastValueIndex]; |
| | | 105 | | KeyPair newKeyPair = new KeyPair(pairs[lastValueIndex].key1, pairs[lastValueIndex].key2); |
| | | 106 | | indexer[newKeyPair] = index; |
| | | 107 | | pairs.RemoveAt(lastValueIndex); |
| | | 108 | | } |
| | | 109 | | else |
| | | 110 | | { |
| | | 111 | | pairs.RemoveAt(index); |
| | | 112 | | } |
| | | 113 | | |
| | | 114 | | KeyPair removeKeyPair = new KeyPair(key1, key2); |
| | | 115 | | indexer.Remove(removeKeyPair); |
| | | 116 | | } |
| | | 117 | | |
| | | 118 | | public bool Remove(TKey1 key1, TKey2 key2) |
| | | 119 | | { |
| | | 120 | | KeyPair keyPair = new KeyPair(key1, key2); |
| | | 121 | | |
| | | 122 | | if (!indexer.TryGetValue(keyPair, out int index)) |
| | | 123 | | { |
| | | 124 | | return false; |
| | | 125 | | } |
| | | 126 | | |
| | | 127 | | RemoveAt(index); |
| | | 128 | | return true; |
| | | 129 | | } |
| | | 130 | | |
| | | 131 | | public void Clear() |
| | | 132 | | { |
| | | 133 | | indexer.Clear(); |
| | | 134 | | pairs.Clear(); |
| | | 135 | | } |
| | | 136 | | |
| | | 137 | | public IEnumerator<KeyValueSetTriplet<TKey1, TKey2, TValue>> GetEnumerator() |
| | | 138 | | { |
| | | 139 | | for (int i = 0; i < Count; i++) |
| | | 140 | | { |
| | | 141 | | yield return pairs[i]; |
| | | 142 | | } |
| | | 143 | | } |
| | | 144 | | |
| | | 145 | | IEnumerator IEnumerable.GetEnumerator() |
| | | 146 | | { |
| | | 147 | | return GetEnumerator(); |
| | | 148 | | } |
| | | 149 | | |
| | | 150 | | private void AddInternal(TKey1 key1, TKey2 key2, TValue value, bool add) |
| | | 151 | | { |
| | | 152 | | KeyPair keyPair = new KeyPair(key1, key2); |
| | | 153 | | if (!add && indexer.TryGetValue(keyPair, out int index)) |
| | | 154 | | { |
| | | 155 | | pairs[index] = new KeyValueSetTriplet<TKey1, TKey2, TValue>(keyPair.key1, keyPair.key2, value); |
| | | 156 | | return; |
| | | 157 | | } |
| | | 158 | | indexer.Add(keyPair, pairs.Count); |
| | | 159 | | pairs.Add(new KeyValueSetTriplet<TKey1, TKey2, TValue>(keyPair.key1, keyPair.key2, value)); |
| | | 160 | | } |
| | | 161 | | } |