Move up non-generic collection types and add debug view.

Assets/Cryville/Common/Collections/PairCollection.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace Cryville.Common.Collections {
+	[DebuggerDisplay("Count = {Count}"), DebuggerTypeProxy(typeof(PairCollectionDebugView))]
+	public struct PairCollection : IDisposable {
+		public void Dispose() { }
+		readonly IPairList _pairList;
+		readonly IDictionary _dictionary;
+		public PairCollection(object collection) : this() {
+			var type = collection.GetType();
+			if (typeof(IPairList).IsAssignableFrom(type)) _pairList = (IPairList)collection;
+			else if (typeof(IDictionary).IsAssignableFrom(type)) _dictionary = (IDictionary)collection;
+			else throw new ArgumentException("Parameter is not a pair collection");
+		}
+		public int Count {
+			get {
+				if (_pairList != null) return _pairList.Count;
+				else return _dictionary.Count;
+			}
+		}
+		public void Add(object key, object value) {
+			if (_pairList != null) _pairList.Add(key, value);
+			else _dictionary.Add(key, value);
+		}
+		public void CopyTo(KeyValuePair<object, object>[] array, int index) {
+			if (_pairList != null) _pairList.CopyTo(array, index);
+			else _dictionary.CopyTo(array, index);
+		}
+	}
+	internal class PairCollectionDebugView {
+		readonly PairCollection _self;
+		public PairCollectionDebugView(PairCollection self) {
+			_self = self;
+		}
+		[DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
+		public KeyValuePair<object, object>[] Items {
+			get {
+				KeyValuePair<object, object>[] array = new KeyValuePair<object, object>[_self.Count];
+				_self.CopyTo(array, 0);
+				return array;
+			}
+		}
+	}
+}