From 5067f5fdb397c5c25b5c7adaaa310f54bb8d09e9 Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Mon, 6 Apr 2020 13:11:05 -0400
Subject: [PATCH] feat: Added Type extension method for getting inner generic
 types

---
 ICD.Common.Utils/Extensions/TypeExtensions.cs | 28 ++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/ICD.Common.Utils/Extensions/TypeExtensions.cs b/ICD.Common.Utils/Extensions/TypeExtensions.cs
index 9810b26..4e7060b 100644
--- a/ICD.Common.Utils/Extensions/TypeExtensions.cs
+++ b/ICD.Common.Utils/Extensions/TypeExtensions.cs
@@ -208,13 +208,39 @@ namespace ICD.Common.Utils.Extensions
 			return to.IsAssignableFrom(from);
 		}
 
+		/// <summary>
+		/// Extracts the inner Types from this current Type inheriting/implementing the given generic Type.
+		///		E.g.
+		///			typeof(List&lt;int&gt;).GetInnerGenericTypes(typeof(IEnumerable&lt;&gt;));
+		///		Returns
+		///			[ typeof(int) ]
+		/// </summary>
+		/// <param name="extends"></param>
+		/// <param name="genericType"></param>
+		/// <returns></returns>
+		[NotNull]
+		public static IEnumerable<Type> GetInnerGenericTypes([NotNull] this Type extends, Type genericType)
+		{
+			if (extends == null)
+				throw new ArgumentNullException("extends");
+
+			if (genericType == null)
+				throw new ArgumentNullException("genericType");
+
+			return extends
+				.GetAllTypes()
+				.First(t => t.IsGenericType &&
+				            t.GetGenericTypeDefinition() == genericType)
+				.GetGenericArguments();
+		}
+
 		/// <summary>
 		/// Returns the given type, all base types, and all implemented interfaces.
 		/// </summary>
 		/// <param name="extends"></param>
 		/// <returns></returns>
 		[NotNull]
-		public static IEnumerable<Type> GetAllTypes([NotNull]this Type extends)
+		public static IEnumerable<Type> GetAllTypes([NotNull] this Type extends)
 		{
 			if (extends == null)
 				throw new ArgumentNullException("extends");