/// <summary>
/// Interpret a command set.
/// </summary>
public void Interpret()
{
// Read instruction set from where they are stored.
var rawInstructions = reader.Read();
// Read the individual instructions line by line.
using (var reader = new StringReader(rawInstructions))
{
// Only need to read the establish grid command once, since it will be applied to all rovers.
var line = reader.ReadLine();
var establishGridCommand = new EstablishGridCommand(line);
// Read as many position confirmation/movement instructions as are in the instruction set.
while (true)
{
line = reader.ReadLine();
// Check for end of the instructions.
if (line == null)
{
break;
}
var confirmPositionCommand = new ConfirmPositionCommand(line);
line = reader.ReadLine();
// Check for end of the instructions.
if (line == null)
{
throw new InvalidOperationException("Expected instructions for move command.");
}
var moveCommand = new MoveCommand(line);
var dispatcher = dispatcherFactory.Create();
// Dispatch the command set to a rover.
dispatcher.Dispatch(new CommandSet(establishGridCommand, confirmPositionCommand, moveCommand));
}
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="establishGrid">The establish grid command.</param>
/// <param name="confirmPosition">The confirm position command.</param>
/// <param name="move">The move command.</param>
public CommandSet(EstablishGridCommand establishGrid, ConfirmPositionCommand confirmPosition, MoveCommand move)
{
this.EstablishGrid = establishGrid ?? throw new ArgumentNullException(nameof(establishGrid));
this.ConfirmPosition = confirmPosition ?? throw new ArgumentNullException(nameof(confirmPosition));
this.Move = move ?? throw new ArgumentNullException(nameof(move));
}