using Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

namespace Microsoft.CodeAnalysis.CSharp.Syntax;

public sealed class AttributeArgumentSyntax : CSharpSyntaxNode
{
	private NameEqualsSyntax? nameEquals;

	private NameColonSyntax? nameColon;

	private ExpressionSyntax? expression;

	public NameEqualsSyntax? NameEquals => ((SyntaxNode)this).GetRedAtZero<NameEqualsSyntax>(ref nameEquals);

	public NameColonSyntax? NameColon => ((SyntaxNode)this).GetRed<NameColonSyntax>(ref nameColon, 1);

	public ExpressionSyntax Expression => ((SyntaxNode)this).GetRed<ExpressionSyntax>(ref expression, 2);

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

	internal override SyntaxNode? GetNodeSlot(int index)
	{
		return (SyntaxNode?)(index switch
		{
			0 => ((SyntaxNode)this).GetRedAtZero<NameEqualsSyntax>(ref nameEquals), 
			1 => ((SyntaxNode)this).GetRed<NameColonSyntax>(ref nameColon, 1), 
			2 => ((SyntaxNode)this).GetRed<ExpressionSyntax>(ref expression, 2), 
			_ => null, 
		});
	}

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

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

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

	public AttributeArgumentSyntax Update(NameEqualsSyntax? nameEquals, NameColonSyntax? nameColon, ExpressionSyntax expression)
	{
		if (nameEquals != NameEquals || nameColon != NameColon || expression != Expression)
		{
			AttributeArgumentSyntax attributeArgumentSyntax = SyntaxFactory.AttributeArgument(nameEquals, nameColon, expression);
			SyntaxAnnotation[] annotations = ((SyntaxNode)this).GetAnnotations();
			if (annotations == null || annotations.Length == 0)
			{
				return attributeArgumentSyntax;
			}
			return attributeArgumentSyntax.WithAnnotations(annotations);
		}
		return this;
	}

	public AttributeArgumentSyntax WithNameEquals(NameEqualsSyntax? nameEquals)
	{
		return Update(nameEquals, NameColon, Expression);
	}

	public AttributeArgumentSyntax WithNameColon(NameColonSyntax? nameColon)
	{
		return Update(NameEquals, nameColon, Expression);
	}

	public AttributeArgumentSyntax WithExpression(ExpressionSyntax expression)
	{
		return Update(NameEquals, NameColon, expression);
	}
}