| | | 1 | | namespace Towel.DataStructures; |
| | | 2 | | |
| | | 3 | | /// <summary>Extension methods for <see cref="ITrie{T}"/> and <see cref="ITrie{T, D}"/>.</summary> |
| | | 4 | | public static class Trie |
| | | 5 | | { |
| | | 6 | | #region Extensions Methods |
| | | 7 | | |
| | | 8 | | /// <summary>Adds a value.</summary> |
| | | 9 | | /// <typeparam name="T">The type of value.</typeparam> |
| | | 10 | | /// <typeparam name="TData">The type of the data.</typeparam> |
| | | 11 | | /// <param name="trie">The trie to add the value to.</param> |
| | | 12 | | /// <param name="value">The value to be added.</param> |
| | | 13 | | /// <param name="stepper">The keys of the relative value.</param> |
| | | 14 | | public static void Add<T, TData>(this ITrie<T, TData> trie, TData value, Action<Action<T>> stepper) |
| | | 15 | | { |
| | | 16 | | var (success, exception) = trie.TryAdd(value, stepper); |
| | | 17 | | if (!success) |
| | | 18 | | { |
| | | 19 | | throw exception ?? new ArgumentException($"{nameof(Add)} failed but the {nameof(exception)} is null"); |
| | | 20 | | } |
| | | 21 | | } |
| | | 22 | | |
| | | 23 | | /// <summary>Gets a value.</summary> |
| | | 24 | | /// <typeparam name="T">The type of value.</typeparam> |
| | | 25 | | /// <typeparam name="TData">The type of the data.</typeparam> |
| | | 26 | | /// <param name="trie">The trie to get the value from.</param> |
| | | 27 | | /// <param name="stepper">The keys of the relative value.</param> |
| | | 28 | | /// <returns>The value.</returns> |
| | | 29 | | public static TData Get<T, TData>(this ITrie<T, TData> trie, Action<Action<T>> stepper) |
| | | 30 | | { |
| | | 31 | | var (success, value, exception) = trie.TryGet(stepper); |
| | | 32 | | if (!success) |
| | | 33 | | { |
| | | 34 | | throw exception ?? new ArgumentException($"{nameof(Get)} failed but the {nameof(exception)} is null"); |
| | | 35 | | } |
| | | 36 | | return value!; |
| | | 37 | | } |
| | | 38 | | |
| | | 39 | | /// <summary>Removes a value.</summary> |
| | | 40 | | /// <typeparam name="T">The type of value.</typeparam> |
| | | 41 | | /// <typeparam name="TData">The type of the data.</typeparam> |
| | | 42 | | /// <param name="trie">The trie to remove the value from.</param> |
| | | 43 | | /// <param name="stepper">The keys to store the value relative to.</param> |
| | | 44 | | public static void Remove<T, TData>(this ITrie<T, TData> trie, Action<Action<T>> stepper) |
| | | 45 | | { |
| | | 46 | | var (success, exception) = trie.TryRemove(stepper); |
| | | 47 | | if (!success) |
| | | 48 | | { |
| | | 49 | | throw exception ?? new ArgumentException($"{nameof(Remove)} failed but the {nameof(exception)} is null"); |
| | | 50 | | } |
| | | 51 | | } |
| | | 52 | | |
| | | 53 | | #endregion |
| | | 54 | | } |
| | | 55 | | |
| | | 56 | | /// <summary>A trie data structure that allows partial value sharing to reduce redundant memory.</summary> |
| | | 57 | | /// <typeparam name="T">The type of values in the trie.</typeparam> |
| | | 58 | | public interface ITrie<T> : IDataStructure<Action<Action<T>>>, |
| | | 59 | | DataStructure.ICountable, |
| | | 60 | | DataStructure.IClearable, |
| | | 61 | | DataStructure.IAddable<Action<Action<T>>>, |
| | | 62 | | DataStructure.IRemovable<Action<Action<T>>>, |
| | | 63 | | DataStructure.IAuditable<Action<Action<T>>> |
| | | 64 | | { |
| | | 65 | | |
| | | 66 | | } |
| | | 67 | | |
| | | 68 | | /// <summary>Static helpers.</summary> |
| | | 69 | | public static class TrieLinkedHashLinked |
| | | 70 | | { |
| | | 71 | | #region Extension Methods |
| | | 72 | | |
| | | 73 | | /// <summary>Constructs a new <see cref="TrieLinkedHashLinked{T, TEquate, THash}"/>.</summary> |
| | | 74 | | /// <typeparam name="T">The type of values stored in this data structure.</typeparam> |
| | | 75 | | /// <param name="equate">The function for comparing <typeparamref name="T"/> values for equality.</param> |
| | | 76 | | /// <param name="hash">The function for hashing <typeparamref name="T"/> values.</param> |
| | | 77 | | /// <returns>The new constructed <see cref="TrieLinkedHashLinked{T, TEquate, THash}"/>.</returns> |
| | | 78 | | public static TrieLinkedHashLinked<T, SFunc<T, T, bool>, SFunc<T, int>> New<T>( |
| | | 79 | | Func<T, T, bool>? equate = null, |
| | | 80 | | Func<T, int>? hash = null) => |
| | | 81 | | new(equate ?? Equate, hash ?? Hash); |
| | | 82 | | |
| | | 83 | | /// <summary>Constructs a new <see cref="TrieLinkedHashLinked{T, D, TEquate, THash}"/>.</summary> |
| | | 84 | | /// <typeparam name="T">The type of values stored in this data structure.</typeparam> |
| | | 85 | | /// <typeparam name="TData">The additional data type to store with each leaf.</typeparam> |
| | | 86 | | /// <param name="equate">The function for comparing <typeparamref name="T"/> values for equality.</param> |
| | | 87 | | /// <param name="hash">The function for hashing <typeparamref name="T"/> values.</param> |
| | | 88 | | /// <returns>The new constructed <see cref="TrieLinkedHashLinked{T, D, TEquate, THash}"/>.</returns> |
| | | 89 | | public static TrieLinkedHashLinked<T, TData, SFunc<T, T, bool>, SFunc<T, int>> New<T, TData>( |
| | | 90 | | Func<T, T, bool>? equate = null, |
| | | 91 | | Func<T, int>? hash = null) => |
| | | 92 | | new(equate ?? Equate, hash ?? Hash); |
| | | 93 | | |
| | | 94 | | #endregion |
| | | 95 | | } |
| | | 96 | | |
| | | 97 | | /// <summary>A trie data structure that allows partial value sharing to reduce redundant memory.</summary> |
| | | 98 | | /// <typeparam name="T">The type of values in the trie.</typeparam> |
| | | 99 | | /// <typeparam name="TEquate">The type of function for quality checking <typeparamref name="T"/> values.</typeparam> |
| | | 100 | | /// <typeparam name="THash">The type of function for hashing <typeparamref name="T"/> values.</typeparam> |
| | | 101 | | public class TrieLinkedHashLinked<T, TEquate, THash> : ITrie<T>, |
| | | 102 | | ICloneable<TrieLinkedHashLinked<T, TEquate, THash>>, |
| | | 103 | | DataStructure.IEquating<T, TEquate>, |
| | | 104 | | DataStructure.IHashing<T, THash> |
| | | 105 | | where TEquate : struct, IFunc<T, T, bool> |
| | | 106 | | where THash : struct, IFunc<T, int> |
| | | 107 | | { |
| | | 108 | | internal MapHashLinked<Node, T, TEquate, THash> _map; |
| | | 109 | | internal int _count; |
| | | 110 | | |
| | | 111 | | #region Nested Types |
| | | 112 | | |
| | | 113 | | internal class Node |
| | | 114 | | { |
| | | 115 | | internal MapHashLinked<Node, T, TEquate, THash> Map; |
| | | 116 | | internal bool IsLeaf; |
| | | 117 | | internal int Count; |
| | | 118 | | |
| | 0 | 119 | | public Node(MapHashLinked<Node, T, TEquate, THash> map) => Map = map; |
| | | 120 | | } |
| | | 121 | | |
| | | 122 | | #endregion |
| | | 123 | | |
| | | 124 | | #region Constructors |
| | | 125 | | |
| | | 126 | | /// <summary>Constructs a new trie that uses linked hash tables of linked lists.</summary> |
| | | 127 | | /// <param name="equate">The equality delegate for the keys.</param> |
| | | 128 | | /// <param name="hash">The hashing function for the keys.</param> |
| | 0 | 129 | | public TrieLinkedHashLinked(TEquate equate = default, THash hash = default) |
| | 0 | 130 | | { |
| | 0 | 131 | | _count = 0; |
| | 0 | 132 | | _map = new(equate, hash); |
| | 0 | 133 | | } |
| | | 134 | | |
| | | 135 | | /// <summary>This constructor is for cloning purposes.</summary> |
| | | 136 | | /// <param name="trie">The trie to clone.</param> |
| | 0 | 137 | | public TrieLinkedHashLinked(TrieLinkedHashLinked<T, TEquate, THash> trie) |
| | 0 | 138 | | { |
| | 0 | 139 | | _count = trie._count; |
| | 0 | 140 | | _map = trie._map.Clone(); |
| | 0 | 141 | | } |
| | | 142 | | |
| | | 143 | | #endregion |
| | | 144 | | |
| | | 145 | | #region Properties |
| | | 146 | | |
| | | 147 | | /// <summary>The current count of the trie.</summary> |
| | 0 | 148 | | public int Count => _count; |
| | | 149 | | /// <summary>The equality function of the keys.</summary> |
| | 0 | 150 | | public TEquate Equate => _map.Equate; |
| | | 151 | | /// <summary>The hash fucntion for the keys.</summary> |
| | 0 | 152 | | public THash Hash => _map.Hash; |
| | | 153 | | |
| | | 154 | | #endregion |
| | | 155 | | |
| | | 156 | | #region Methods |
| | | 157 | | |
| | | 158 | | /// <inheritdoc/> |
| | | 159 | | public (bool Success, Exception? Exception) TryAdd(Action<Action<T>> stepper) |
| | 0 | 160 | | { |
| | 0 | 161 | | if (stepper is null) |
| | 0 | 162 | | { |
| | 0 | 163 | | return (false, new ArgumentNullException(nameof(stepper))); |
| | | 164 | | } |
| | 0 | 165 | | IStack<Node> stack = new StackLinked<Node>(); |
| | 0 | 166 | | Node? node = null; |
| | 0 | 167 | | stepper(key => |
| | 0 | 168 | | { |
| | 0 | 169 | | var map = node is null ? _map : node.Map; |
| | 0 | 170 | | if (map.Contains(key)) |
| | 0 | 171 | | { |
| | 0 | 172 | | node = map[key]; |
| | 0 | 173 | | } |
| | 0 | 174 | | else |
| | 0 | 175 | | { |
| | 0 | 176 | | Node temp = new(map: new(Equate, Hash)); |
| | 0 | 177 | | map[key] = temp; |
| | 0 | 178 | | node = temp; |
| | 0 | 179 | | } |
| | 0 | 180 | | stack.Push(node); |
| | 0 | 181 | | }); |
| | 0 | 182 | | if (node is null) |
| | 0 | 183 | | { |
| | 0 | 184 | | return (false, new ArgumentException("Stepper was empty.", nameof(stepper))); |
| | | 185 | | } |
| | 0 | 186 | | else if (node.IsLeaf) |
| | 0 | 187 | | { |
| | 0 | 188 | | return (false, new ArgumentException("Attempted to add an already existing item.", nameof(stepper))); |
| | | 189 | | } |
| | | 190 | | else |
| | 0 | 191 | | { |
| | 0 | 192 | | node.IsLeaf = true; |
| | 0 | 193 | | stack.Stepper(n => n.Count++); |
| | 0 | 194 | | _count++; |
| | 0 | 195 | | return (true, null); |
| | | 196 | | } |
| | 0 | 197 | | } |
| | | 198 | | |
| | | 199 | | /// <inheritdoc/> |
| | | 200 | | public (bool Success, Exception? Exception) TryRemove(Action<Action<T>> stepper) |
| | 0 | 201 | | { |
| | 0 | 202 | | if (stepper is null) |
| | 0 | 203 | | { |
| | 0 | 204 | | return (false, new ArgumentNullException(nameof(stepper))); |
| | | 205 | | } |
| | 0 | 206 | | StackLinked<(T, MapHashLinked<Node, T, TEquate, THash>, Node)> stack = new(); |
| | | 207 | | T finalKey; |
| | 0 | 208 | | MapHashLinked<Node, T, TEquate, THash>? finalMap = null; |
| | 0 | 209 | | Node? node = null; |
| | 0 | 210 | | Exception? exception = null; |
| | 0 | 211 | | stepper(key => |
| | 0 | 212 | | { |
| | 0 | 213 | | finalKey = key; |
| | 0 | 214 | | finalMap = node is null ? _map : node.Map; |
| | 0 | 215 | | if (finalMap.Contains(key)) |
| | 0 | 216 | | { |
| | 0 | 217 | | node = finalMap[key]; |
| | 0 | 218 | | } |
| | 0 | 219 | | else |
| | 0 | 220 | | { |
| | 0 | 221 | | exception ??= new ArgumentException("Attempted to remove a non-existing item.", nameof(stepper)); |
| | 0 | 222 | | } |
| | 0 | 223 | | stack.Push((finalKey, finalMap, node!)); |
| | 0 | 224 | | }); |
| | 0 | 225 | | if (exception is not null) |
| | 0 | 226 | | { |
| | 0 | 227 | | return (false, exception); |
| | | 228 | | } |
| | 0 | 229 | | else if (node is null) |
| | 0 | 230 | | { |
| | 0 | 231 | | return (false, new ArgumentException("Stepper was empty.", nameof(stepper))); |
| | | 232 | | } |
| | 0 | 233 | | else if (!node.IsLeaf) |
| | 0 | 234 | | { |
| | 0 | 235 | | return (false, new ArgumentException("Attempted to remove a non-existing item.", nameof(stepper))); |
| | | 236 | | } |
| | | 237 | | else |
| | 0 | 238 | | { |
| | 0 | 239 | | bool remove = true; |
| | 0 | 240 | | while (stack.Count > 0) |
| | 0 | 241 | | { |
| | 0 | 242 | | var (k, m, n) = stack.Pop(); |
| | 0 | 243 | | n.Count--; |
| | 0 | 244 | | if (remove && n.Count is 0) |
| | 0 | 245 | | { |
| | 0 | 246 | | m.Remove(k); |
| | 0 | 247 | | } |
| | | 248 | | else |
| | 0 | 249 | | { |
| | 0 | 250 | | remove = false; |
| | 0 | 251 | | } |
| | 0 | 252 | | } |
| | 0 | 253 | | _count--; |
| | 0 | 254 | | return (true, null); |
| | | 255 | | } |
| | 0 | 256 | | } |
| | | 257 | | |
| | | 258 | | /// <inheritdoc/> |
| | | 259 | | public bool Contains(Action<Action<T>> stepper) |
| | 0 | 260 | | { |
| | 0 | 261 | | if (stepper is null) throw new ArgumentNullException(nameof(stepper)); |
| | 0 | 262 | | Node? node = null; |
| | 0 | 263 | | bool contains = true; |
| | 0 | 264 | | stepper(key => |
| | 0 | 265 | | { |
| | 0 | 266 | | if (!contains) |
| | 0 | 267 | | { |
| | 0 | 268 | | return; |
| | 0 | 269 | | } |
| | 0 | 270 | | else |
| | 0 | 271 | | { |
| | 0 | 272 | | var map = node is null ? _map : node.Map; |
| | 0 | 273 | | if (map.Contains(key)) |
| | 0 | 274 | | { |
| | 0 | 275 | | node = map[key]; |
| | 0 | 276 | | } |
| | 0 | 277 | | else |
| | 0 | 278 | | { |
| | 0 | 279 | | contains = false; |
| | 0 | 280 | | } |
| | 0 | 281 | | } |
| | 0 | 282 | | }); |
| | 0 | 283 | | if (node is null) |
| | 0 | 284 | | { |
| | 0 | 285 | | throw new ArgumentException("Stepper was empty.", nameof(stepper)); |
| | | 286 | | } |
| | 0 | 287 | | return node.IsLeaf; |
| | 0 | 288 | | } |
| | | 289 | | |
| | | 290 | | /// <inheritdoc/> |
| | | 291 | | public void Clear() |
| | 0 | 292 | | { |
| | 0 | 293 | | _count = 0; |
| | 0 | 294 | | _map.Clear(); |
| | 0 | 295 | | } |
| | | 296 | | |
| | | 297 | | /// <inheritdoc/> |
| | | 298 | | public StepStatus StepperBreak<TStep>(TStep step = default) |
| | | 299 | | where TStep : struct, IFunc<Action<Action<T>>, StepStatus> |
| | 0 | 300 | | { |
| | | 301 | | StepStatus Stepper(Node node, Action<Action<T>> stepper) |
| | 0 | 302 | | { |
| | 0 | 303 | | if (node.IsLeaf) |
| | 0 | 304 | | { |
| | 0 | 305 | | if (step.Invoke(stepper) is Break) |
| | 0 | 306 | | { |
| | 0 | 307 | | return Break; |
| | | 308 | | } |
| | 0 | 309 | | } |
| | 0 | 310 | | return node.Map.PairsBreak(pair => |
| | 0 | 311 | | Stepper(pair.Value, x => { stepper(x); x(pair.Key); }) is Break |
| | 0 | 312 | | ? Break |
| | 0 | 313 | | : Continue); |
| | 0 | 314 | | } |
| | 0 | 315 | | return _map.PairsBreak(pair => Stepper(pair.Value, x => x(pair.Key))); |
| | 0 | 316 | | } |
| | | 317 | | |
| | 0 | 318 | | System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => GetEnumerator(); |
| | | 319 | | |
| | | 320 | | /// <inheritdoc/> |
| | | 321 | | public System.Collections.Generic.IEnumerator<Action<Action<T>>> GetEnumerator() |
| | 0 | 322 | | { |
| | | 323 | | #warning TODO: optimize |
| | 0 | 324 | | IList<Action<Action<T>>> list = new ListLinked<Action<Action<T>>>(); |
| | 0 | 325 | | this.Stepper(x => list.Add(x)); |
| | 0 | 326 | | return list.GetEnumerator(); |
| | 0 | 327 | | } |
| | | 328 | | |
| | | 329 | | /// <inheritdoc/> |
| | 0 | 330 | | public TrieLinkedHashLinked<T, TEquate, THash> Clone() => new(this); |
| | | 331 | | |
| | | 332 | | /// <inheritdoc/> |
| | | 333 | | public Action<Action<T>>[] ToArray() |
| | 0 | 334 | | { |
| | | 335 | | #warning TODO: optimize |
| | 0 | 336 | | Action<Action<T>>[] array = new Action<Action<T>>[_count]; |
| | 0 | 337 | | int i = 0; |
| | 0 | 338 | | this.Stepper(x => array[i++] = x); |
| | 0 | 339 | | return array; |
| | 0 | 340 | | } |
| | | 341 | | |
| | | 342 | | #endregion |
| | | 343 | | } |
| | | 344 | | |
| | | 345 | | /// <summary>A trie data structure that allows partial value sharing to reduce redundant memory.</summary> |
| | | 346 | | /// <typeparam name="T">The type of values in the trie.</typeparam> |
| | | 347 | | /// <typeparam name="TData">The additional data type to store with each leaf.</typeparam> |
| | | 348 | | public interface ITrie<T, TData> : IDataStructure<(Action<Action<T>>, TData)>, |
| | | 349 | | DataStructure.ICountable, |
| | | 350 | | DataStructure.IClearable, |
| | | 351 | | DataStructure.IAuditable<Action<Action<T>>> |
| | | 352 | | { |
| | | 353 | | #region Methods |
| | | 354 | | |
| | | 355 | | /// <summary>Tries to add a value to the trie.</summary> |
| | | 356 | | /// <param name="value">The value to add.</param> |
| | | 357 | | /// <param name="stepper">The relative keys of the value.</param> |
| | | 358 | | /// <returns>True if the value was added or false if not.</returns> |
| | | 359 | | (bool Success, Exception? Exception) TryAdd(TData value, Action<Action<T>> stepper); |
| | | 360 | | |
| | | 361 | | /// <summary>Tries to get a value.</summary> |
| | | 362 | | /// <param name="stepper">The relative keys of the value.</param> |
| | | 363 | | /// <returns>True if the remove was successful or false if not.</returns> |
| | | 364 | | (bool Success, TData? Value, Exception? Exception) TryGet(Action<Action<T>> stepper); |
| | | 365 | | |
| | | 366 | | /// <summary>Tries to remove a value.</summary> |
| | | 367 | | /// <param name="stepper">The relative keys of the value.</param> |
| | | 368 | | /// <returns>True if the remove was successful or false if not.</returns> |
| | | 369 | | (bool Success, Exception? Exception) TryRemove(Action<Action<T>> stepper); |
| | | 370 | | |
| | | 371 | | #endregion |
| | | 372 | | } |
| | | 373 | | |
| | | 374 | | /// <summary>A trie data structure that allows partial value sharing to reduce redundant memory.</summary> |
| | | 375 | | /// <typeparam name="T">The type of values in the trie.</typeparam> |
| | | 376 | | /// <typeparam name="TData">The additional data type to store with each leaf.</typeparam> |
| | | 377 | | /// <typeparam name="TEquate">The type of function for quality checking <typeparamref name="T"/> values.</typeparam> |
| | | 378 | | /// <typeparam name="THash">The type of function for hashing <typeparamref name="T"/> values.</typeparam> |
| | | 379 | | public class TrieLinkedHashLinked<T, TData, TEquate, THash> : ITrie<T, TData>, |
| | | 380 | | ICloneable<TrieLinkedHashLinked<T, TData, TEquate, THash>>, |
| | | 381 | | DataStructure.ICountable, |
| | | 382 | | DataStructure.IClearable, |
| | | 383 | | DataStructure.IEquating<T, TEquate>, |
| | | 384 | | DataStructure.IHashing<T, THash> |
| | | 385 | | where TEquate : struct, IFunc<T, T, bool> |
| | | 386 | | where THash : struct, IFunc<T, int> |
| | | 387 | | { |
| | | 388 | | internal MapHashLinked<Node, T, TEquate, THash> _map; |
| | | 389 | | internal int _count; |
| | | 390 | | |
| | | 391 | | #region Nested Types |
| | | 392 | | |
| | | 393 | | internal class Node |
| | | 394 | | { |
| | | 395 | | internal MapHashLinked<Node, T, TEquate, THash> Map; |
| | | 396 | | internal TData? Value; |
| | | 397 | | internal bool HasValue; |
| | | 398 | | internal int Count; |
| | | 399 | | |
| | | 400 | | public Node(MapHashLinked<Node, T, TEquate, THash> map) => Map = map; |
| | | 401 | | } |
| | | 402 | | |
| | | 403 | | #endregion |
| | | 404 | | |
| | | 405 | | #region Constructors |
| | | 406 | | |
| | | 407 | | /// <summary>Constructs a new trie that uses linked hash tables of linked lists.</summary> |
| | | 408 | | /// <param name="equate">The equality delegate for the keys.</param> |
| | | 409 | | /// <param name="hash">The hashing function for the keys.</param> |
| | | 410 | | public TrieLinkedHashLinked(TEquate equate = default, THash hash = default) |
| | | 411 | | { |
| | | 412 | | _count = 0; |
| | | 413 | | _map = new(equate, hash); |
| | | 414 | | } |
| | | 415 | | |
| | | 416 | | /// <summary>This constructor is for cloning purposes.</summary> |
| | | 417 | | /// <param name="trie">The trie to clone.</param> |
| | | 418 | | public TrieLinkedHashLinked(TrieLinkedHashLinked<T, TData, TEquate, THash> trie) |
| | | 419 | | { |
| | | 420 | | _count = trie._count; |
| | | 421 | | _map = trie._map.Clone(); |
| | | 422 | | } |
| | | 423 | | |
| | | 424 | | #endregion |
| | | 425 | | |
| | | 426 | | #region Properties |
| | | 427 | | |
| | | 428 | | /// <summary>The current count of the trie.</summary> |
| | | 429 | | public int Count => _count; |
| | | 430 | | /// <summary>The equality function of the keys.</summary> |
| | | 431 | | public TEquate Equate => _map.Equate; |
| | | 432 | | /// <summary>The hash fucntion for the keys.</summary> |
| | | 433 | | public THash Hash => _map.Hash; |
| | | 434 | | |
| | | 435 | | #endregion |
| | | 436 | | |
| | | 437 | | #region Methods |
| | | 438 | | |
| | | 439 | | /// <inheritdoc/> |
| | | 440 | | public (bool Success, Exception? Exception) TryAdd(TData value, Action<Action<T>> stepper) |
| | | 441 | | { |
| | | 442 | | if (stepper is null) |
| | | 443 | | { |
| | | 444 | | return (false, new ArgumentNullException(nameof(stepper))); |
| | | 445 | | } |
| | | 446 | | StackLinked<Node> stack = new(); |
| | | 447 | | Node? node = null; |
| | | 448 | | stepper(key => |
| | | 449 | | { |
| | | 450 | | var map = node is null ? _map : node.Map; |
| | | 451 | | if (map.Contains(key)) |
| | | 452 | | { |
| | | 453 | | node = map[key]; |
| | | 454 | | } |
| | | 455 | | else |
| | | 456 | | { |
| | | 457 | | Node temp = new(map: new(Equate, Hash)); |
| | | 458 | | map[key] = temp; |
| | | 459 | | node = temp; |
| | | 460 | | } |
| | | 461 | | stack.Push(node); |
| | | 462 | | }); |
| | | 463 | | if (node is null) |
| | | 464 | | { |
| | | 465 | | return (false, new ArgumentException("Stepper was empty.", nameof(stepper))); |
| | | 466 | | } |
| | | 467 | | else if (node.HasValue) |
| | | 468 | | { |
| | | 469 | | return (false, new ArgumentException("Attempted to add an already existing item.", nameof(stepper))); |
| | | 470 | | } |
| | | 471 | | else |
| | | 472 | | { |
| | | 473 | | node.Value = value; |
| | | 474 | | node.HasValue = true; |
| | | 475 | | stack.Stepper(n => n.Count++); |
| | | 476 | | _count++; |
| | | 477 | | return (true, null); |
| | | 478 | | } |
| | | 479 | | } |
| | | 480 | | |
| | | 481 | | /// <inheritdoc/> |
| | | 482 | | public (bool Success, TData? Value, Exception? Exception) TryGet(Action<Action<T>> stepper) |
| | | 483 | | { |
| | | 484 | | if (stepper is null) |
| | | 485 | | { |
| | | 486 | | return (false, default, new ArgumentNullException(nameof(stepper))); |
| | | 487 | | } |
| | | 488 | | Node? node = null; |
| | | 489 | | stepper(key => |
| | | 490 | | { |
| | | 491 | | var map = node is null ? _map : node.Map; |
| | | 492 | | if (map.Contains(key)) |
| | | 493 | | { |
| | | 494 | | node = map[key]; |
| | | 495 | | } |
| | | 496 | | else |
| | | 497 | | { |
| | | 498 | | Node temp = new(map: new(Equate, Hash)); |
| | | 499 | | map[key] = temp; |
| | | 500 | | node = temp; |
| | | 501 | | } |
| | | 502 | | }); |
| | | 503 | | if (node is null) |
| | | 504 | | { |
| | | 505 | | return (false, default, new ArgumentException("Stepper was empty.", nameof(stepper))); |
| | | 506 | | } |
| | | 507 | | else if (!node.HasValue) |
| | | 508 | | { |
| | | 509 | | return (false, default, new ArgumentException("Attempted to get a non-existing item.", nameof(stepper))); |
| | | 510 | | } |
| | | 511 | | else |
| | | 512 | | { |
| | | 513 | | return (true, node.Value, null); |
| | | 514 | | } |
| | | 515 | | } |
| | | 516 | | |
| | | 517 | | /// <inheritdoc/> |
| | | 518 | | public (bool Success, Exception? Exception) TryRemove(Action<Action<T>> stepper) |
| | | 519 | | { |
| | | 520 | | if (stepper is null) |
| | | 521 | | { |
| | | 522 | | return (false, new ArgumentNullException(nameof(stepper))); |
| | | 523 | | } |
| | | 524 | | StackLinked<(T, MapHashLinked<Node, T, TEquate, THash>, Node)> stack = new(); |
| | | 525 | | T finalKey; |
| | | 526 | | MapHashLinked<Node, T, TEquate, THash> finalMap; |
| | | 527 | | Node? node = null; |
| | | 528 | | Exception? capturedException = null; |
| | | 529 | | stepper(key => |
| | | 530 | | { |
| | | 531 | | finalKey = key; |
| | | 532 | | finalMap = node is null ? _map : node.Map; |
| | | 533 | | if (finalMap.Contains(key)) |
| | | 534 | | { |
| | | 535 | | node = finalMap[key]; |
| | | 536 | | } |
| | | 537 | | else |
| | | 538 | | { |
| | | 539 | | capturedException ??= new ArgumentException("Attempted to remove a non-existing item.", nameof(stepper)); |
| | | 540 | | } |
| | | 541 | | stack.Push((finalKey, finalMap, node!)); |
| | | 542 | | }); |
| | | 543 | | if (capturedException is not null) |
| | | 544 | | { |
| | | 545 | | return (false, capturedException); |
| | | 546 | | } |
| | | 547 | | else if (node is null) |
| | | 548 | | { |
| | | 549 | | return (false, new ArgumentException("Stepper was empty.", nameof(stepper))); |
| | | 550 | | } |
| | | 551 | | else if (!node.HasValue) |
| | | 552 | | { |
| | | 553 | | return (false, new ArgumentException("Attempted to remove a non-existing item.", nameof(stepper))); |
| | | 554 | | } |
| | | 555 | | else |
| | | 556 | | { |
| | | 557 | | bool remove = true; |
| | | 558 | | while (stack.Count > 0) |
| | | 559 | | { |
| | | 560 | | var (k, m, n) = stack.Pop(); |
| | | 561 | | n.Count--; |
| | | 562 | | if (remove && n.Count is 0) |
| | | 563 | | { |
| | | 564 | | m.Remove(k); |
| | | 565 | | } |
| | | 566 | | else |
| | | 567 | | { |
| | | 568 | | remove = false; |
| | | 569 | | } |
| | | 570 | | } |
| | | 571 | | _count--; |
| | | 572 | | return (true, null); |
| | | 573 | | } |
| | | 574 | | } |
| | | 575 | | |
| | | 576 | | /// <inheritdoc/> |
| | | 577 | | public bool Contains(Action<Action<T>> stepper) |
| | | 578 | | { |
| | | 579 | | if (stepper is null) throw new ArgumentNullException(nameof(stepper)); |
| | | 580 | | Node? node = null; |
| | | 581 | | bool contains = true; |
| | | 582 | | stepper(key => |
| | | 583 | | { |
| | | 584 | | if (!contains) |
| | | 585 | | { |
| | | 586 | | return; |
| | | 587 | | } |
| | | 588 | | else |
| | | 589 | | { |
| | | 590 | | var map = node is null ? _map : node.Map; |
| | | 591 | | if (map.Contains(key)) |
| | | 592 | | { |
| | | 593 | | node = map[key]; |
| | | 594 | | } |
| | | 595 | | else |
| | | 596 | | { |
| | | 597 | | contains = false; |
| | | 598 | | } |
| | | 599 | | } |
| | | 600 | | }); |
| | | 601 | | if (node is null) |
| | | 602 | | { |
| | | 603 | | throw new ArgumentException("Stepper was empty.", nameof(stepper)); |
| | | 604 | | } |
| | | 605 | | return node.HasValue; |
| | | 606 | | } |
| | | 607 | | |
| | | 608 | | /// <inheritdoc/> |
| | | 609 | | public void Clear() |
| | | 610 | | { |
| | | 611 | | _count = 0; |
| | | 612 | | _map.Clear(); |
| | | 613 | | } |
| | | 614 | | |
| | | 615 | | /// <inheritdoc/> |
| | | 616 | | public StepStatus StepperBreak<TStep>(TStep step = default) |
| | | 617 | | where TStep : struct, IFunc<(Action<Action<T>>, TData), StepStatus> |
| | | 618 | | { |
| | | 619 | | StepStatus Stepper(Node node, Action<Action<T>> stepper) |
| | | 620 | | { |
| | | 621 | | if (node.HasValue) |
| | | 622 | | { |
| | | 623 | | if (step.Invoke((stepper, node.Value!)) is Break) |
| | | 624 | | { |
| | | 625 | | return Break; |
| | | 626 | | } |
| | | 627 | | } |
| | | 628 | | return node.Map.PairsBreak(pair => Stepper(pair.Value, x => { stepper(x); x(pair.Key); })); |
| | | 629 | | } |
| | | 630 | | return _map.PairsBreak(pair => Stepper(pair.Value, x => x(pair.Key))); |
| | | 631 | | } |
| | | 632 | | |
| | | 633 | | System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => |
| | | 634 | | GetEnumerator(); |
| | | 635 | | |
| | | 636 | | /// <inheritdoc/> |
| | | 637 | | public System.Collections.Generic.IEnumerator<(Action<Action<T>>, TData)> GetEnumerator() |
| | | 638 | | { |
| | | 639 | | #warning TODO: optimize |
| | | 640 | | IList<(Action<Action<T>>, TData)> list = new ListLinked<(Action<Action<T>>, TData)>(); |
| | | 641 | | this.Stepper(x => list.Add(x)); |
| | | 642 | | return list.GetEnumerator(); |
| | | 643 | | } |
| | | 644 | | |
| | | 645 | | /// <inheritdoc/> |
| | | 646 | | public TrieLinkedHashLinked<T, TData, TEquate, THash> Clone() => new(this); |
| | | 647 | | |
| | | 648 | | /// <inheritdoc/> |
| | | 649 | | public (Action<Action<T>>, TData)[] ToArray() |
| | | 650 | | { |
| | | 651 | | #warning TODO: optimize |
| | | 652 | | (Action<Action<T>>, TData)[] array = new (Action<Action<T>>, TData)[_count]; |
| | | 653 | | int i = 0; |
| | | 654 | | this.Stepper(x => array[i++] = x); |
| | | 655 | | return array; |
| | | 656 | | } |
| | | 657 | | |
| | | 658 | | #endregion |
| | | 659 | | } |