using System;
using System.Collections.ObjectModel;
using Cpp2IlInjected;

namespace System.Linq.Expressions
{
	/// <summary>Represents a visitor or rewriter for expression trees.</summary>
	// Token: 0x0200008A RID: 138
	[Token(Token = "0x200008A")]
	public abstract class ExpressionVisitor
	{
		/// <summary>Initializes a new instance of <see cref="T:System.Linq.Expressions.ExpressionVisitor" />.</summary>
		// Token: 0x06000417 RID: 1047 RVA: 0x00002053 File Offset: 0x00000253
		[Token(Token = "0x6000417")]
		[Address(RVA = "0x3F5100", Offset = "0x3F3F00", VA = "0x1803F5100")]
		protected ExpressionVisitor()
		{
		}

		/// <summary>Dispatches the expression to one of the more specialized visit methods in this class.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000418 RID: 1048 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000418")]
		[Address(RVA = "0x5B97C0", Offset = "0x5B85C0", VA = "0x1805B97C0", Slot = "4")]
		public virtual Expression Visit(Expression node)
		{
			return null;
		}

		/// <summary>Dispatches the list of expressions to one of the more specialized visit methods in this class.</summary>
		/// <param name="nodes">The expressions to visit.</param>
		/// <returns>The modified expression list, if any one of the elements were modified; otherwise, returns the original expression list.</returns>
		// Token: 0x06000419 RID: 1049 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000419")]
		[Address(RVA = "0x5B95C0", Offset = "0x5B83C0", VA = "0x1805B95C0")]
		public ReadOnlyCollection<Expression> Visit(ReadOnlyCollection<Expression> nodes)
		{
			return null;
		}

		// Token: 0x0600041A RID: 1050 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600041A")]
		[Address(RVA = "0x5B8B00", Offset = "0x5B7900", VA = "0x1805B8B00")]
		private Expression[] VisitArguments(IArgumentProvider nodes)
		{
			return null;
		}

		// Token: 0x0600041B RID: 1051 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600041B")]
		[Address(RVA = "0x5B9370", Offset = "0x5B8170", VA = "0x1805B9370")]
		private ParameterExpression[] VisitParameters(IParameterProvider nodes, string callerName)
		{
			return null;
		}

		/// <summary>Visits all nodes in the collection using a specified element visitor.</summary>
		/// <param name="nodes">The nodes to visit.</param>
		/// <param name="elementVisitor">A delegate that visits a single element, optionally replacing it with a new element.</param>
		/// <typeparam name="T">The type of the nodes.</typeparam>
		/// <returns>The modified node list, if any of the elements were modified; otherwise, returns the original node list.</returns>
		// Token: 0x0600041C RID: 1052 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600041C")]
		[Address(RVA = "0x1934010", Offset = "0x1932E10", VA = "0x181934010")]
		public static ReadOnlyCollection<T> Visit<T>(ReadOnlyCollection<T> nodes, Func<T, T> elementVisitor)
		{
			return null;
		}

		/// <summary>Visits an expression, casting the result back to the original expression type.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <param name="callerName">The name of the calling method; used to report to report a better error message.</param>
		/// <typeparam name="T">The type of the expression.</typeparam>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		/// <exception cref="T:System.InvalidOperationException">The visit method for this node returned a different type.</exception>
		// Token: 0x0600041D RID: 1053 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600041D")]
		[Address(RVA = "0x1297580", Offset = "0x1296380", VA = "0x181297580")]
		public T VisitAndConvert<T>(T node, string callerName) where T : Expression
		{
			return null;
		}

		/// <summary>Visits an expression, casting the result back to the original expression type.</summary>
		/// <param name="nodes">The expression to visit.</param>
		/// <param name="callerName">The name of the calling method; used to report to report a better error message.</param>
		/// <typeparam name="T">The type of the expression.</typeparam>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		/// <exception cref="T:System.InvalidOperationException">The visit method for this node returned a different type.</exception>
		// Token: 0x0600041E RID: 1054 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600041E")]
		[Address(RVA = "0x1933D30", Offset = "0x1932B30", VA = "0x181933D30")]
		public ReadOnlyCollection<T> VisitAndConvert<T>(ReadOnlyCollection<T> nodes, string callerName) where T : Expression
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.BinaryExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600041F RID: 1055 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600041F")]
		[Address(RVA = "0x5B8B10", Offset = "0x5B7910", VA = "0x1805B8B10", Slot = "5")]
		protected internal virtual Expression VisitBinary(BinaryExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.BlockExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000420 RID: 1056 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000420")]
		[Address(RVA = "0x5B8D20", Offset = "0x5B7B20", VA = "0x1805B8D20", Slot = "6")]
		protected internal virtual Expression VisitBlock(BlockExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.ConditionalExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000421 RID: 1057 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000421")]
		[Address(RVA = "0x5B8EC0", Offset = "0x5B7CC0", VA = "0x1805B8EC0", Slot = "7")]
		protected internal virtual Expression VisitConditional(ConditionalExpression node)
		{
			return null;
		}

		/// <summary>Visits the <see cref="T:System.Linq.Expressions.ConstantExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000422 RID: 1058 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000422")]
		[Address(RVA = "0x4996E0", Offset = "0x4984E0", VA = "0x1804996E0", Slot = "8")]
		protected internal virtual Expression VisitConstant(ConstantExpression node)
		{
			return null;
		}

		/// <summary>Visits the <see cref="T:System.Linq.Expressions.DefaultExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000423 RID: 1059 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000423")]
		[Address(RVA = "0x4996E0", Offset = "0x4984E0", VA = "0x1804996E0", Slot = "9")]
		protected internal virtual Expression VisitDefault(DefaultExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the extension expression.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000424 RID: 1060 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000424")]
		[Address(RVA = "0x53C0A0", Offset = "0x53AEA0", VA = "0x18053C0A0", Slot = "10")]
		protected internal virtual Expression VisitExtension(Expression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.GotoExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000425 RID: 1061 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000425")]
		[Address(RVA = "0x5B8F70", Offset = "0x5B7D70", VA = "0x1805B8F70", Slot = "11")]
		protected internal virtual Expression VisitGoto(GotoExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.InvocationExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000426 RID: 1062 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000426")]
		[Address(RVA = "0x5B9140", Offset = "0x5B7F40", VA = "0x1805B9140", Slot = "12")]
		protected internal virtual Expression VisitInvocation(InvocationExpression node)
		{
			return null;
		}

		/// <summary>Visits the <see cref="T:System.Linq.Expressions.LabelTarget" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000427 RID: 1063 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000427")]
		[Address(RVA = "0x4996E0", Offset = "0x4984E0", VA = "0x1804996E0", Slot = "13")]
		protected virtual LabelTarget VisitLabelTarget(LabelTarget node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.LabelExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000428 RID: 1064 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000428")]
		[Address(RVA = "0x5B91D0", Offset = "0x5B7FD0", VA = "0x1805B91D0", Slot = "14")]
		protected internal virtual Expression VisitLabel(LabelExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.Expression`1" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <typeparam name="T">The type of the delegate.</typeparam>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000429 RID: 1065 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000429")]
		[Address(RVA = "0x2174620", Offset = "0x2173420", VA = "0x182174620", Slot = "15")]
		protected internal virtual Expression VisitLambda<T>(Expression<T> node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.MemberExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600042A RID: 1066 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600042A")]
		[Address(RVA = "0x5B9240", Offset = "0x5B8040", VA = "0x1805B9240", Slot = "16")]
		protected internal virtual Expression VisitMember(MemberExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.IndexExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600042B RID: 1067 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600042B")]
		[Address(RVA = "0x5B9060", Offset = "0x5B7E60", VA = "0x1805B9060", Slot = "17")]
		protected internal virtual Expression VisitIndex(IndexExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.MethodCallExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600042C RID: 1068 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600042C")]
		[Address(RVA = "0x5B9280", Offset = "0x5B8080", VA = "0x1805B9280", Slot = "18")]
		protected internal virtual Expression VisitMethodCall(MethodCallExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.NewArrayExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600042D RID: 1069 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600042D")]
		[Address(RVA = "0x5B9330", Offset = "0x5B8130", VA = "0x1805B9330", Slot = "19")]
		protected internal virtual Expression VisitNewArray(NewArrayExpression node)
		{
			return null;
		}

		/// <summary>Visits the <see cref="T:System.Linq.Expressions.ParameterExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600042E RID: 1070 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600042E")]
		[Address(RVA = "0x4996E0", Offset = "0x4984E0", VA = "0x1804996E0", Slot = "20")]
		protected internal virtual Expression VisitParameter(ParameterExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.CatchBlock" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x0600042F RID: 1071 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x600042F")]
		[Address(RVA = "0x5B8DF0", Offset = "0x5B7BF0", VA = "0x1805B8DF0", Slot = "21")]
		protected virtual CatchBlock VisitCatchBlock(CatchBlock node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.TryExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000430 RID: 1072 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000430")]
		[Address(RVA = "0x5B9380", Offset = "0x5B8180", VA = "0x1805B9380", Slot = "22")]
		protected internal virtual Expression VisitTry(TryExpression node)
		{
			return null;
		}

		/// <summary>Visits the children of the <see cref="T:System.Linq.Expressions.UnaryExpression" />.</summary>
		/// <param name="node">The expression to visit.</param>
		/// <returns>The modified expression, if it or any subexpression was modified; otherwise, returns the original expression.</returns>
		// Token: 0x06000431 RID: 1073 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000431")]
		[Address(RVA = "0x5B94A0", Offset = "0x5B82A0", VA = "0x1805B94A0", Slot = "23")]
		protected internal virtual Expression VisitUnary(UnaryExpression node)
		{
			return null;
		}

		// Token: 0x06000432 RID: 1074 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000432")]
		[Address(RVA = "0x5B8A00", Offset = "0x5B7800", VA = "0x1805B8A00")]
		private static UnaryExpression ValidateUnary(UnaryExpression before, UnaryExpression after)
		{
			return null;
		}

		// Token: 0x06000433 RID: 1075 RVA: 0x00002050 File Offset: 0x00000250
		[Token(Token = "0x6000433")]
		[Address(RVA = "0x5B87D0", Offset = "0x5B75D0", VA = "0x1805B87D0")]
		private static BinaryExpression ValidateBinary(BinaryExpression before, BinaryExpression after)
		{
			return null;
		}

		// Token: 0x06000434 RID: 1076 RVA: 0x00002053 File Offset: 0x00000253
		[Token(Token = "0x6000434")]
		[Address(RVA = "0x5B8950", Offset = "0x5B7750", VA = "0x1805B8950")]
		private static void ValidateChildType(Type before, Type after, string methodName)
		{
		}
	}
}