using System.Collections.Generic;
using Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

namespace Microsoft.CodeAnalysis.CSharp.Syntax;

public sealed class ParameterListSyntax : BaseParameterListSyntax
{
	private SyntaxNode? parameters;

	internal int ParameterCount
	{
		get
		{
			//IL_0003: Unknown result type (might be due to invalid IL or missing references)
			//IL_0008: Unknown result type (might be due to invalid IL or missing references)
			//IL_000b: Unknown result type (might be due to invalid IL or missing references)
			//IL_0010: Unknown result type (might be due to invalid IL or missing references)
			int num = 0;
			Enumerator<ParameterSyntax> enumerator = Parameters.GetEnumerator();
			while (enumerator.MoveNext())
			{
				if (!enumerator.Current.IsArgList)
				{
					num++;
				}
			}
			return num;
		}
	}

	public SyntaxToken OpenParenToken => new SyntaxToken((SyntaxNode)(object)this, (GreenNode)(object)((Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.ParameterListSyntax)(object)((SyntaxNode)this).Green).openParenToken, ((SyntaxNode)this).Position, 0);

	public override SeparatedSyntaxList<ParameterSyntax> Parameters
	{
		get
		{
			//IL_0023: Unknown result type (might be due to invalid IL or missing references)
			//IL_0013: Unknown result type (might be due to invalid IL or missing references)
			//IL_0019: Unknown result type (might be due to invalid IL or missing references)
			SyntaxNode red = ((SyntaxNode)this).GetRed(ref parameters, 1);
			if (red == null)
			{
				return default(SeparatedSyntaxList<ParameterSyntax>);
			}
			return new SeparatedSyntaxList<ParameterSyntax>(red, ((SyntaxNode)this).GetChildIndex(1));
		}
	}

	public SyntaxToken CloseParenToken => new SyntaxToken((SyntaxNode)(object)this, (GreenNode)(object)((Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.ParameterListSyntax)(object)((SyntaxNode)this).Green).closeParenToken, ((SyntaxNode)this).GetChildPosition(2), ((SyntaxNode)this).GetChildIndex(2));

	internal ParameterListSyntax(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)this).GetRed(ref parameters, 1);
	}

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

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

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

	public ParameterListSyntax Update(SyntaxToken openParenToken, SeparatedSyntaxList<ParameterSyntax> parameters, SyntaxToken closeParenToken)
	{
		//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_002a: Unknown result type (might be due to invalid IL or missing references)
		//IL_002b: Unknown result type (might be due to invalid IL or missing references)
		//IL_002c: Unknown result type (might be due to invalid IL or missing references)
		//IL_000e: Unknown result type (might be due to invalid IL or missing references)
		//IL_0010: Unknown result type (might be due to invalid IL or missing references)
		//IL_001c: Unknown result type (might be due to invalid IL or missing references)
		//IL_001e: Unknown result type (might be due to invalid IL or missing references)
		if (openParenToken != OpenParenToken || parameters != Parameters || closeParenToken != CloseParenToken)
		{
			ParameterListSyntax parameterListSyntax = SyntaxFactory.ParameterList(openParenToken, parameters, closeParenToken);
			SyntaxAnnotation[] annotations = ((SyntaxNode)this).GetAnnotations();
			if (annotations == null || annotations.Length == 0)
			{
				return parameterListSyntax;
			}
			return parameterListSyntax.WithAnnotations(annotations);
		}
		return this;
	}

	public ParameterListSyntax WithOpenParenToken(SyntaxToken openParenToken)
	{
		//IL_0001: Unknown result type (might be due to invalid IL or missing references)
		//IL_0003: Unknown result type (might be due to invalid IL or missing references)
		//IL_0009: Unknown result type (might be due to invalid IL or missing references)
		return Update(openParenToken, Parameters, CloseParenToken);
	}

	internal override BaseParameterListSyntax WithParametersCore(SeparatedSyntaxList<ParameterSyntax> parameters)
	{
		//IL_0001: Unknown result type (might be due to invalid IL or missing references)
		return WithParameters(parameters);
	}

	public new ParameterListSyntax WithParameters(SeparatedSyntaxList<ParameterSyntax> parameters)
	{
		//IL_0002: Unknown result type (might be due to invalid IL or missing references)
		//IL_0007: Unknown result type (might be due to invalid IL or missing references)
		//IL_0009: Unknown result type (might be due to invalid IL or missing references)
		return Update(OpenParenToken, parameters, CloseParenToken);
	}

	public ParameterListSyntax WithCloseParenToken(SyntaxToken closeParenToken)
	{
		//IL_0002: Unknown result type (might be due to invalid IL or missing references)
		//IL_0008: Unknown result type (might be due to invalid IL or missing references)
		//IL_000d: Unknown result type (might be due to invalid IL or missing references)
		return Update(OpenParenToken, Parameters, closeParenToken);
	}

	internal override BaseParameterListSyntax AddParametersCore(params ParameterSyntax[] items)
	{
		return AddParameters(items);
	}

	public new ParameterListSyntax AddParameters(params ParameterSyntax[] items)
	{
		//IL_0002: Unknown result type (might be due to invalid IL or missing references)
		//IL_0007: Unknown result type (might be due to invalid IL or missing references)
		//IL_000b: Unknown result type (might be due to invalid IL or missing references)
		return WithParameters(Parameters.AddRange((IEnumerable<ParameterSyntax>)items));
	}
}