using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq.Expressions;

namespace System.Linq
{
	// Token: 0x02000045 RID: 69
	internal class QueryableEnumerable<TElement> : IEnumerable, IOrderedQueryable, IQueryProvider, IQueryable, IQueryableEnumerable, IEnumerable<TElement>, IQueryableEnumerable<TElement>, IQueryable<TElement>, IOrderedQueryable<TElement>
	{
		// Token: 0x06000423 RID: 1059 RVA: 0x00013D5C File Offset: 0x00011F5C
		public QueryableEnumerable(IEnumerable<TElement> enumerable)
		{
			this.expression = Expression.Constant(this);
			this.enumerable = enumerable;
		}

		// Token: 0x06000424 RID: 1060 RVA: 0x00013D78 File Offset: 0x00011F78
		public QueryableEnumerable(Expression expression)
		{
			this.expression = expression;
		}

		// Token: 0x06000425 RID: 1061 RVA: 0x00013D88 File Offset: 0x00011F88
		IEnumerator IEnumerable.GetEnumerator()
		{
			return this.GetEnumerator();
		}

		// Token: 0x17000043 RID: 67
		// (get) Token: 0x06000426 RID: 1062 RVA: 0x00013D90 File Offset: 0x00011F90
		public Type ElementType
		{
			get
			{
				return typeof(TElement);
			}
		}

		// Token: 0x17000044 RID: 68
		// (get) Token: 0x06000427 RID: 1063 RVA: 0x00013D9C File Offset: 0x00011F9C
		public Expression Expression
		{
			get
			{
				return this.expression;
			}
		}

		// Token: 0x17000045 RID: 69
		// (get) Token: 0x06000428 RID: 1064 RVA: 0x00013DA4 File Offset: 0x00011FA4
		public IQueryProvider Provider
		{
			get
			{
				return this;
			}
		}

		// Token: 0x06000429 RID: 1065 RVA: 0x00013DA8 File Offset: 0x00011FA8
		public IEnumerable GetEnumerable()
		{
			return this.enumerable;
		}

		// Token: 0x0600042A RID: 1066 RVA: 0x00013DB0 File Offset: 0x00011FB0
		public IEnumerator<TElement> GetEnumerator()
		{
			return this.Execute<IEnumerable<TElement>>(this.expression).GetEnumerator();
		}

		// Token: 0x0600042B RID: 1067 RVA: 0x00013DC4 File Offset: 0x00011FC4
		public IQueryable CreateQuery(Expression expression)
		{
			return (IQueryable)Activator.CreateInstance(typeof(QueryableEnumerable<>).MakeGenericType(new Type[] { expression.Type.GetFirstGenericArgument() }), new object[] { expression });
		}

		// Token: 0x0600042C RID: 1068 RVA: 0x00013E08 File Offset: 0x00012008
		public object Execute(Expression expression)
		{
			LambdaExpression lambdaExpression = Expression.Lambda(QueryableEnumerable<TElement>.TransformQueryable(expression), new ParameterExpression[0]);
			return lambdaExpression.Compile().DynamicInvoke(new object[0]);
		}

		// Token: 0x0600042D RID: 1069 RVA: 0x00013E38 File Offset: 0x00012038
		private static Expression TransformQueryable(Expression expression)
		{
			return new QueryableTransformer().Transform(expression);
		}

		// Token: 0x0600042E RID: 1070 RVA: 0x00013E48 File Offset: 0x00012048
		public IQueryable<TElem> CreateQuery<TElem>(Expression expression)
		{
			return new QueryableEnumerable<TElem>(expression);
		}

		// Token: 0x0600042F RID: 1071 RVA: 0x00013E50 File Offset: 0x00012050
		public TResult Execute<TResult>(Expression expression)
		{
			Expression<Func<TResult>> expression2 = Expression.Lambda<Func<TResult>>(QueryableEnumerable<TElement>.TransformQueryable(expression), new ParameterExpression[0]);
			return expression2.Compile()();
		}

		// Token: 0x040000F0 RID: 240
		private Expression expression;

		// Token: 0x040000F1 RID: 241
		private IEnumerable<TElement> enumerable;
	}
}