using Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

namespace Microsoft.CodeAnalysis.CSharp.Syntax;

public sealed class VarPatternSyntax : PatternSyntax
{
	private VariableDesignationSyntax? designation;

	public SyntaxToken VarKeyword => new SyntaxToken((SyntaxNode)(object)this, (GreenNode)(object)((Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.VarPatternSyntax)(object)((SyntaxNode)this).Green).varKeyword, ((SyntaxNode)this).Position, 0);

	public VariableDesignationSyntax Designation => ((SyntaxNode)this).GetRed<VariableDesignationSyntax>(ref designation, 1);

	internal VarPatternSyntax(Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.CSharpSyntaxNode green, SyntaxNode? parent, int position)
		: base(green, parent, position)
	{
	}

	internal override SyntaxNode? GetNodeSlot(int index)
	{
		if (index != 1)
		{
			return null;
		}
		return (SyntaxNode?)(object)((SyntaxNode)this).GetRed<VariableDesignationSyntax>(ref designation, 1);
	}

	internal override SyntaxNode? GetCachedSlot(int index)
	{
		if (index != 1)
		{
			return null;
		}
		return (SyntaxNode?)(object)designation;
	}

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

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

	public VarPatternSyntax Update(SyntaxToken varKeyword, VariableDesignationSyntax designation)
	{
		//IL_0000: Unknown result type (might be due to invalid IL or missing references)
		//IL_0002: Unknown result type (might be due to invalid IL or missing references)
		//IL_0017: Unknown result type (might be due to invalid IL or missing references)
		if (varKeyword != VarKeyword || designation != Designation)
		{
			VarPatternSyntax varPatternSyntax = SyntaxFactory.VarPattern(varKeyword, designation);
			SyntaxAnnotation[] annotations = ((SyntaxNode)this).GetAnnotations();
			if (annotations == null || annotations.Length == 0)
			{
				return varPatternSyntax;
			}
			return varPatternSyntax.WithAnnotations(annotations);
		}
		return this;
	}

	public VarPatternSyntax WithVarKeyword(SyntaxToken varKeyword)
	{
		//IL_0001: Unknown result type (might be due to invalid IL or missing references)
		return Update(varKeyword, Designation);
	}

	public VarPatternSyntax WithDesignation(VariableDesignationSyntax designation)
	{
		//IL_0002: Unknown result type (might be due to invalid IL or missing references)
		return Update(VarKeyword, designation);
	}
}