using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for an End statement of a block.
/// </summary>
public sealed class EndBlockStatement : Statement
{
	private readonly BlockType _EndType;

	private readonly Location _EndArgumentLocation;

	/// <summary>
	/// The type of block the statement ends.
	/// </summary>
	public BlockType EndType => _EndType;

	/// <summary>
	/// The location of the end block argument.
	/// </summary>
	public Location EndArgumentLocation => _EndArgumentLocation;

	/// <summary>
	/// Creates a new parse tree for an End block statement.
	/// </summary>
	/// <param name="endType">The type of the block the statement ends.</param>
	/// <param name="endArgumentLocation">The location of the end block argument.</param>
	/// <param name="span">The location of the parse tree.</param>
	/// <param name="comments">The comments for the parse tree.</param>
	public EndBlockStatement(BlockType endType, Location endArgumentLocation, Span span, IList<Comment> comments)
		: base(TreeType.EndBlockStatement, span, comments)
	{
		if (endType < BlockType.While || endType > BlockType.Namespace)
		{
			throw new ArgumentOutOfRangeException("endType");
		}
		_EndType = endType;
		_EndArgumentLocation = endArgumentLocation;
	}
}