using System;
using System.Collections.Generic;

namespace Cryville.Common.Collections.Generic {
	public class PairList : List<KeyValuePair<object, object>>, IPairList {
		public void Add(object key, object value) {
			Add(new KeyValuePair<object, object>(key, value));
		}

		public void Insert(int index, object key, object value) {
			Insert(index, new KeyValuePair<object, object>(key, value));
		}
	}
	public class PairList<TKey, TValue> : List<KeyValuePair<TKey, TValue>>, IPairList<TKey, TValue> {
		public void Add(TKey key, TValue value) {
			Add(new KeyValuePair<TKey, TValue>(key, value));
		}

		public void Add(object key, object value) {
			try {
				Add((TKey)key, (TValue)value);
			}
			catch (InvalidCastException) {
				throw new ArgumentException("Wrong key type or value type");
			}
		}

		public void Insert(int index, TKey key, TValue value) {
			Insert(index, new KeyValuePair<TKey, TValue>(key, value));
		}

		public void Insert(int index, object key, object value) {
			try {
				Insert(index, (TKey)key, (TValue)value);
			}
			catch (InvalidCastException) {
				throw new ArgumentException("Wrong key type or value type");
			}
		}
	}
}