using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for an Imports declaration.
/// </summary>
public sealed class ImportsDeclaration : Declaration
{
	private readonly ImportCollection _ImportMembers;

	/// <summary>
	/// The members imported.
	/// </summary>
	public ImportCollection ImportMembers => _ImportMembers;

	/// <summary>
	/// Constructs a parse tree for an Imports declaration.
	/// </summary>
	/// <param name="importMembers">The members imported.</param>
	/// <param name="span">The location of the parse tree.</param>
	/// <param name="comments">The comments for the parse tree.</param>
	public ImportsDeclaration(ImportCollection importMembers, Span span, IList<Comment> comments)
		: base(TreeType.ImportsDeclaration, span, comments)
	{
		if (importMembers == null)
		{
			throw new ArgumentNullException("importMembers");
		}
		SetParent(importMembers);
		_ImportMembers = importMembers;
	}

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