using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for an Implements declaration.
/// </summary>
public sealed class ImplementsDeclaration : Declaration
{
	private readonly TypeNameCollection _ImplementedTypes;

	/// <summary>
	/// The list of types.
	/// </summary>
	public TypeNameCollection ImplementedTypes => _ImplementedTypes;

	/// <summary>
	/// Constructs a parse tree for an Implements declaration.
	/// </summary>
	/// <param name="implementedTypes">The types inherited or implemented.</param>
	/// <param name="span">The location of the parse tree.</param>
	/// <param name="comments">The comments for the parse tree.</param>
	public ImplementsDeclaration(TypeNameCollection implementedTypes, Span span, IList<Comment> comments)
		: base(TreeType.ImplementsDeclaration, span, comments)
	{
		if (implementedTypes == null)
		{
			throw new ArgumentNullException("implementedTypes");
		}
		SetParent(implementedTypes);
		_ImplementedTypes = implementedTypes;
	}

	protected override void GetChildTrees(IList<Tree> childList)
	{
		base.GetChildTrees(childList);
		Tree.AddChild(childList, ImplementedTypes);
	}
}