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

namespace Microsoft.CodeAnalysis.CSharp.Syntax;

public sealed class InvocationExpressionSyntax : ExpressionSyntax
{
	private ExpressionSyntax? expression;

	private ArgumentListSyntax? argumentList;

	public ExpressionSyntax Expression => ((SyntaxNode)this).GetRedAtZero<ExpressionSyntax>(ref expression);

	public ArgumentListSyntax ArgumentList => ((SyntaxNode)this).GetRed<ArgumentListSyntax>(ref argumentList, 1);

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

	internal override SyntaxNode? GetNodeSlot(int index)
	{
		return (SyntaxNode?)(index switch
		{
			0 => ((SyntaxNode)this).GetRedAtZero<ExpressionSyntax>(ref expression), 
			1 => ((SyntaxNode)this).GetRed<ArgumentListSyntax>(ref argumentList, 1), 
			_ => null, 
		});
	}

	internal override SyntaxNode? GetCachedSlot(int index)
	{
		return (SyntaxNode?)(index switch
		{
			0 => expression, 
			1 => argumentList, 
			_ => null, 
		});
	}

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

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

	public InvocationExpressionSyntax Update(ExpressionSyntax expression, ArgumentListSyntax argumentList)
	{
		if (expression != Expression || argumentList != ArgumentList)
		{
			InvocationExpressionSyntax invocationExpressionSyntax = SyntaxFactory.InvocationExpression(expression, argumentList);
			SyntaxAnnotation[] annotations = ((SyntaxNode)this).GetAnnotations();
			if (annotations == null || annotations.Length == 0)
			{
				return invocationExpressionSyntax;
			}
			return invocationExpressionSyntax.WithAnnotations(annotations);
		}
		return this;
	}

	public InvocationExpressionSyntax WithExpression(ExpressionSyntax expression)
	{
		return Update(expression, ArgumentList);
	}

	public InvocationExpressionSyntax WithArgumentList(ArgumentListSyntax argumentList)
	{
		return Update(Expression, argumentList);
	}

	public InvocationExpressionSyntax AddArgumentListArguments(params ArgumentSyntax[] items)
	{
		//IL_000d: Unknown result type (might be due to invalid IL or missing references)
		//IL_0012: Unknown result type (might be due to invalid IL or missing references)
		//IL_0016: Unknown result type (might be due to invalid IL or missing references)
		return WithArgumentList(ArgumentList.WithArguments(ArgumentList.Arguments.AddRange((IEnumerable<ArgumentSyntax>)items)));
	}
}