namespace Sprache
{
    /// <summary>
    /// An interface for objects that have a source <see cref="Position"/>.
    /// </summary>
    /// <typeparam name="T">Type of the matched result.</typeparam>
    public interface IPositionAware<out T>
    {
        /// <summary>
        /// Set the start <see cref="Position"/> and the matched length.
        /// </summary>
        /// <param name="startPos">The start position</param>
        /// <param name="length">The matched length.</param>
        /// <returns>The matched result.</returns>
        T SetPos(Position startPos, int length);
    }
}