using System;

namespace AspClassic.Parser;

/// <summary>
/// A lexical error.
/// </summary>
public sealed class ErrorToken : Token
{
	private readonly SyntaxError _SyntaxError;

	/// <summary>
	/// The syntax error that represents the lexical error.
	/// </summary>
	public SyntaxError SyntaxError => _SyntaxError;

	/// <summary>
	/// Creates a new lexical error token.
	/// </summary>
	/// <param name="errorType">The type of the error.</param>
	/// <param name="span">The location of the error.</param>
	public ErrorToken(SyntaxErrorType errorType, Span span)
		: base(TokenType.LexicalError, span)
	{
		if (errorType < SyntaxErrorType.InvalidEscapedIdentifier || errorType > SyntaxErrorType.InvalidDecimalLiteral)
		{
			throw new ArgumentOutOfRangeException("errorType");
		}
		_SyntaxError = new SyntaxError(errorType, span);
	}
}