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- Adjustments to some files and folders - Addition of missing assert in the boolean test evaluator - Fixed index out of range exception in the FindNumber method in ContentBuilder - Updated the Microsoft.Extensions.ObjectPools package (7.0.1 to 8.0.3)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Diagnostics.CodeAnalysis; | ||
| using System.Linq; | ||
|
|
||
| namespace Byces.Calculator.Collections | ||
| { | ||
| internal sealed class CharSpanDictionary<TValue> | ||
| { | ||
| private const double LoadFactor = 0.75; | ||
| private const int InitialCapacity = 16; | ||
|
|
||
| public CharSpanDictionary() | ||
| { | ||
| _items = new IList<KeyValuePair<string, TValue>>[InitialCapacity]; | ||
| Array.Fill(_items, Array.Empty<KeyValuePair<string, TValue>>()); | ||
| } | ||
|
|
||
| private IList<KeyValuePair<string, TValue>>[] _items; | ||
| private int _count; | ||
|
|
||
| public bool Add(string key, TValue value) | ||
| { | ||
| EnsureCapacity(); | ||
| int index = GetIndex(key); | ||
|
|
||
| if (_items[index].Count == 0) | ||
| { | ||
| _items[index] = new List<KeyValuePair<string, TValue>> { new(key, value) }; | ||
| } | ||
| else | ||
| { | ||
| if (_items[index].Any(pair => key.Equals(pair.Key, StringComparison.OrdinalIgnoreCase))) | ||
| { | ||
| return false; | ||
| } | ||
| _items[index].Add(new KeyValuePair<string, TValue>(key, value)); | ||
| } | ||
| _count += 1; | ||
| return true; | ||
| } | ||
|
|
||
| public TValue this[ReadOnlySpan<char> s] | ||
| { | ||
| get | ||
| { | ||
| if (TryGetValue(s, out TValue? value)) return value; | ||
| throw new ArgumentException("The specified key does not exist in the collection"); | ||
| } | ||
| } | ||
|
|
||
| public bool TryGetValue(ReadOnlySpan<char> s, [MaybeNullWhen(false)] out TValue value) | ||
| { | ||
| int index = GetIndex(s); | ||
| if (_items[index].Count == 0) | ||
| { | ||
| value = default; | ||
| return false; | ||
| } | ||
| IList<KeyValuePair<string, TValue>> pairs = _items[index]; | ||
| for (int i = 0; i < pairs.Count; i++) | ||
| { | ||
| KeyValuePair<string, TValue> pair = pairs[i]; | ||
| if (s.Equals(pair.Key, StringComparison.OrdinalIgnoreCase)) | ||
| { | ||
| value = pair.Value; | ||
| return true; | ||
| } | ||
| } | ||
| value = default; | ||
| return false; | ||
| } | ||
|
|
||
| private void EnsureCapacity() | ||
| { | ||
| if (_count + 1 <= _items.Length * LoadFactor) return; | ||
|
|
||
| IList<KeyValuePair<string, TValue>>[] oldItems = _items; | ||
| _items = new IList<KeyValuePair<string, TValue>>[_items.Length * 2]; | ||
| Array.Fill(_items, Array.Empty<KeyValuePair<string, TValue>>()); | ||
|
|
||
| foreach (IList<KeyValuePair<string, TValue>> oldItem in oldItems) | ||
| { | ||
| foreach (KeyValuePair<string, TValue> pair in oldItem) | ||
| { | ||
| int index = GetIndex(pair.Key); | ||
| if (_items[index].Count == 0) | ||
| { | ||
| _items[index] = new List<KeyValuePair<string, TValue>> { pair }; | ||
| continue; | ||
| } | ||
| _items[index].Add(pair); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private int GetIndex(ReadOnlySpan<char> s) | ||
| { | ||
| int hashCode = string.GetHashCode(s, StringComparison.OrdinalIgnoreCase); | ||
| return Math.Abs(hashCode % _items.Length); | ||
| } | ||
| } | ||
| } |
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