Import YamlDotNet.

Assets/YamlDotNet/Helpers/GenericCollectionToNonGenericAdapter.cs

@@ -0,0 +1,125 @@
+// This file is part of YamlDotNet - A .NET library for YAML.
+// Copyright (c) Antoine Aubry and contributors
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+// of the Software, and to permit persons to whom the Software is furnished to do
+// so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace YamlDotNet.Helpers
+{
+    /// <summary>
+    /// Adapts an <see cref="System.Collections.Generic.ICollection{T}" /> to <see cref="IList" />
+    /// because not all generic collections implement <see cref="IList" />.
+    /// </summary>
+    internal sealed class GenericCollectionToNonGenericAdapter<T> : IList
+    {
+        private readonly ICollection<T> genericCollection;
+
+        public GenericCollectionToNonGenericAdapter(ICollection<T> genericCollection)
+        {
+            this.genericCollection = genericCollection ?? throw new ArgumentNullException(nameof(genericCollection));
+        }
+
+        public int Add(object? value)
+        {
+            var index = genericCollection.Count;
+            genericCollection.Add((T)value!);
+            return index;
+        }
+
+        public void Clear()
+        {
+            genericCollection.Clear();
+        }
+
+        public bool Contains(object? value)
+        {
+            throw new NotSupportedException();
+        }
+
+        public int IndexOf(object? value)
+        {
+            throw new NotSupportedException();
+        }
+
+        public void Insert(int index, object? value)
+        {
+            throw new NotSupportedException();
+        }
+
+        public bool IsFixedSize
+        {
+            get { throw new NotSupportedException(); }
+        }
+
+        public bool IsReadOnly
+        {
+            get { throw new NotSupportedException(); }
+        }
+
+        public void Remove(object? value)
+        {
+            throw new NotSupportedException();
+        }
+
+        public void RemoveAt(int index)
+        {
+            throw new NotSupportedException();
+        }
+
+        public object? this[int index]
+        {
+            get
+            {
+                throw new NotSupportedException();
+            }
+            set
+            {
+                ((IList<T>)genericCollection)[index] = (T)value!;
+            }
+        }
+
+        public void CopyTo(Array array, int index)
+        {
+            throw new NotSupportedException();
+        }
+
+        public int Count
+        {
+            get { throw new NotSupportedException(); }
+        }
+
+        public bool IsSynchronized
+        {
+            get { throw new NotSupportedException(); }
+        }
+
+        public object SyncRoot
+        {
+            get { throw new NotSupportedException(); }
+        }
+
+        public IEnumerator GetEnumerator()
+        {
+            return genericCollection.GetEnumerator();
+        }
+    }
+}