using System;
using System.Collections;
using System.Collections.Generic;

namespace System.Linq
{
	// Token: 0x02000040 RID: 64
	internal abstract class OrderedEnumerable<TElement> : IEnumerable, IEnumerable<TElement>, IOrderedEnumerable<TElement>
	{
		// Token: 0x0600039B RID: 923 RVA: 0x00010F38 File Offset: 0x0000F138
		protected OrderedEnumerable(IEnumerable<TElement> source)
		{
			this.source = source;
		}

		// Token: 0x0600039C RID: 924 RVA: 0x00010F48 File Offset: 0x0000F148
		IEnumerator IEnumerable.GetEnumerator()
		{
			return this.GetEnumerator();
		}

		// Token: 0x0600039D RID: 925 RVA: 0x00010F50 File Offset: 0x0000F150
		public IEnumerator<TElement> GetEnumerator()
		{
			return this.Sort(this.source).GetEnumerator();
		}

		// Token: 0x0600039E RID: 926
		public abstract SortContext<TElement> CreateContext(SortContext<TElement> current);

		// Token: 0x0600039F RID: 927
		protected abstract IEnumerable<TElement> Sort(IEnumerable<TElement> source);

		// Token: 0x060003A0 RID: 928 RVA: 0x00010F64 File Offset: 0x0000F164
		public IOrderedEnumerable<TElement> CreateOrderedEnumerable<TKey>(Func<TElement, TKey> selector, IComparer<TKey> comparer, bool descending)
		{
			return new OrderedSequence<TElement, TKey>(this, this.source, selector, comparer, (!descending) ? SortDirection.Ascending : SortDirection.Descending);
		}

		// Token: 0x040000EB RID: 235
		private IEnumerable<TElement> source;
	}
}