using System;
using System.Collections.Generic;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

internal sealed class PostfixUnaryExpressionSyntax : ExpressionSyntax
{
	internal readonly ExpressionSyntax operand;

	internal readonly SyntaxToken operatorToken;

	public ExpressionSyntax Operand => operand;

	public SyntaxToken OperatorToken => operatorToken;

	internal PostfixUnaryExpressionSyntax(SyntaxKind kind, ExpressionSyntax operand, SyntaxToken operatorToken, DiagnosticInfo[]? diagnostics, SyntaxAnnotation[]? annotations)
		: base(kind, diagnostics, annotations)
	{
		((GreenNode)this).SlotCount = 2;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)operand);
		this.operand = operand;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)operatorToken);
		this.operatorToken = operatorToken;
	}

	internal PostfixUnaryExpressionSyntax(SyntaxKind kind, ExpressionSyntax operand, SyntaxToken operatorToken, SyntaxFactoryContext context)
		: base(kind)
	{
		SetFactoryContext(context);
		((GreenNode)this).SlotCount = 2;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)operand);
		this.operand = operand;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)operatorToken);
		this.operatorToken = operatorToken;
	}

	internal PostfixUnaryExpressionSyntax(SyntaxKind kind, ExpressionSyntax operand, SyntaxToken operatorToken)
		: base(kind)
	{
		((GreenNode)this).SlotCount = 2;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)operand);
		this.operand = operand;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)operatorToken);
		this.operatorToken = operatorToken;
	}

	internal override GreenNode? GetSlot(int index)
	{
		return (GreenNode?)(index switch
		{
			0 => operand, 
			1 => operatorToken, 
			_ => null, 
		});
	}

	internal override SyntaxNode CreateRed(SyntaxNode? parent, int position)
	{
		return (SyntaxNode)(object)new Microsoft.CodeAnalysis.CSharp.Syntax.PostfixUnaryExpressionSyntax(this, parent, position);
	}

	public override void Accept(CSharpSyntaxVisitor visitor)
	{
		visitor.VisitPostfixUnaryExpression(this);
	}

	public override TResult Accept<TResult>(CSharpSyntaxVisitor<TResult> visitor)
	{
		return visitor.VisitPostfixUnaryExpression(this);
	}

	public PostfixUnaryExpressionSyntax Update(ExpressionSyntax operand, SyntaxToken operatorToken)
	{
		if (operand != Operand || operatorToken != OperatorToken)
		{
			PostfixUnaryExpressionSyntax postfixUnaryExpressionSyntax = SyntaxFactory.PostfixUnaryExpression(base.Kind, operand, operatorToken);
			DiagnosticInfo[] diagnostics = ((GreenNode)this).GetDiagnostics();
			if (diagnostics != null && diagnostics.Length != 0)
			{
				postfixUnaryExpressionSyntax = GreenNodeExtensions.WithDiagnosticsGreen<PostfixUnaryExpressionSyntax>(postfixUnaryExpressionSyntax, diagnostics);
			}
			SyntaxAnnotation[] annotations = ((GreenNode)this).GetAnnotations();
			if (annotations != null && annotations.Length != 0)
			{
				postfixUnaryExpressionSyntax = GreenNodeExtensions.WithAnnotationsGreen<PostfixUnaryExpressionSyntax>(postfixUnaryExpressionSyntax, (IEnumerable<SyntaxAnnotation>)annotations);
			}
			return postfixUnaryExpressionSyntax;
		}
		return this;
	}

	internal override GreenNode SetDiagnostics(DiagnosticInfo[]? diagnostics)
	{
		return (GreenNode)(object)new PostfixUnaryExpressionSyntax(base.Kind, operand, operatorToken, diagnostics, ((GreenNode)this).GetAnnotations());
	}

	internal override GreenNode SetAnnotations(SyntaxAnnotation[]? annotations)
	{
		return (GreenNode)(object)new PostfixUnaryExpressionSyntax(base.Kind, operand, operatorToken, ((GreenNode)this).GetDiagnostics(), annotations);
	}

	internal PostfixUnaryExpressionSyntax(ObjectReader reader)
		: base(reader)
	{
		((GreenNode)this).SlotCount = 2;
		ExpressionSyntax expressionSyntax = (ExpressionSyntax)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)expressionSyntax);
		operand = expressionSyntax;
		SyntaxToken syntaxToken = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken);
		operatorToken = syntaxToken;
	}

	internal override void WriteTo(ObjectWriter writer)
	{
		((GreenNode)this).WriteTo(writer);
		writer.WriteValue((IObjectWritable)(object)operand);
		writer.WriteValue((IObjectWritable)(object)operatorToken);
	}

	static PostfixUnaryExpressionSyntax()
	{
		ObjectBinder.RegisterTypeReader(typeof(PostfixUnaryExpressionSyntax), (Func<ObjectReader, IObjectWritable>)((ObjectReader r) => (IObjectWritable)(object)new PostfixUnaryExpressionSyntax(r)));
	}
}