Added more flexible initializing options for the CacheInitializer

Author: TwentyFourMinutes

src/StringyEnums/StringyEnums/CacheInitializer.cs

@@ -1,4 +1,4 @@
-using BidirectionalDict;
+using BidirectionalDict;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
@@ -31,33 +31,42 @@ public CacheInitializer InitWith(params Assembly[] assemblies)
 
 				foreach (var enumType in enumTypes)
 				{
-					var fields = enumType.GetFields();
+					InitWith(enumType);
+				}
+			}
 
-					var temptDict = new BiDictionary<int, string>();
+			return this;
+		}
 
-					foreach (var field in fields.Where(x => x.IsStatic))
-					{
-						var attr = field.GetCustomAttribute<StringRepresentationAttribute>();
+		/// <summary>
+		/// Initializes the cache with a given enum.
+		/// </summary>
+		/// <typeparam name="TEnum">The enum which should be added to the cache.</typeparam>
+		public CacheInitializer InitWith<TEnum>() where TEnum : struct, Enum
+		{
+			InitWith(typeof(TEnum));
 
-						if (attr is { })
-						{
-							temptDict.TryAdd((int)field.GetValue(enumType)!, attr.StringRepresentation);
-						}
-					}
+			return this;
+		}
 
-					if (temptDict.Count > 0)
-					{
-						_tempCache.Add(enumType, temptDict);
-					}
-				}
+		/// <summary>
+		/// Initializes the cache with a set of given enums.
+		/// </summary>
+		/// <param name="enums">The enums which should be added to the cache.</param>
+		public CacheInitializer InitWith(params Enum[] enums)
+		{
+			foreach (var enumVal in enums)
+			{
+				InitWith(enumVal);
 			}
 
 			return this;
 		}
 
-		public CacheInitializer InitWith<TEnum>() where TEnum : struct, Enum
+		private void InitWith(Type enumType)
 		{
-			var enumType = typeof(TEnum);
+			if (!enumType.IsEnum)
+				throw new ArgumentException("The type provided is not of type enum", nameof(enumType));
 
 			var fields = enumType.GetFields();
 
@@ -77,8 +86,6 @@ public CacheInitializer InitWith<TEnum>() where TEnum : struct, Enum
 			{
 				_tempCache.Add(enumType, temptDict);
 			}
-
-			return this;
 		}
 
 		internal IReadOnlyDictionary<Type, IReadOnlyBiDictionary<int, string>> CustructCache()