using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for an Else If block statement.
/// </summary>
public sealed class ElseIfBlockStatement : BlockStatement
{
	private readonly ElseIfStatement _ElseIfStatement;

	/// <summary>
	/// The Else If statement.
	/// </summary>
	public ElseIfStatement ElseIfStatement => _ElseIfStatement;

	/// <summary>
	/// Constructs a new parse tree for an Else If block statement.
	/// </summary>
	/// <param name="elseIfStatement">The Else If statement.</param>
	/// <param name="statements">The statements in the block.</param>
	/// <param name="span">The location of the parse tree.</param>
	/// <param name="comments">The comments for the parse tree.</param>
	public ElseIfBlockStatement(ElseIfStatement elseIfStatement, StatementCollection statements, Span span, IList<Comment> comments)
		: base(TreeType.ElseIfBlockStatement, statements, span, comments)
	{
		if (elseIfStatement == null)
		{
			throw new ArgumentNullException("elseIfStatement");
		}
		SetParent(elseIfStatement);
		_ElseIfStatement = elseIfStatement;
	}

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