public void Execute(object parameter)
{
var program = (string)parameter;
try
{
ICollection <BaseLogoCommand> commands = LogoController.CreateAndParse(program);
foreach (BaseLogoCommand logoCommand in commands)
{
logoCommand.Execute();
}
FireParseResult(new ParseErrorEventArgs(false));
}
catch (Exception ex)
{
if (ex is LogoScannerException || ex is LogoSyntaxErrorException)
{
FireParseResult(new ParseErrorEventArgs(true, ex.Message, program));
}
else
{
throw;
}
}
}
public void CanUseLogoRoutine()
{
ICollection <BaseLogoCommand> programCommands =
LogoController.CreateAndParse("TO RECTANGLE REPEAT 4 [ FORWARD 100 LEFT 90 ] END RECTANGLE");
var routineCallCommand = programCommands.ElementAt(0) as LogoRoutineCallCommand;
Assert.IsNotNull(routineCallCommand);
}
public void CanCreateRepeatLogoProgram()
{
ICollection <BaseLogoCommand> programCommands = LogoController.CreateAndParse("REPEAT 4 [ FORWARD 100 LEFT 90 ]");
var firstCommand = programCommands.ElementAt(0) as LogoRepeatCommand;
Assert.IsNotNull(firstCommand);
Assert.AreEqual(4, firstCommand.Repeat);
Assert.AreEqual(2, firstCommand.Commands.Count);
}
public void CanRepeatRepeatLogoProgram()
{
ICollection <BaseLogoCommand> programCommands =
LogoController.CreateAndParse("REPEAT 3 [ FORWARD 1 REPEAT 2 [ FORWARD 1 ] ]");
var firstRepeat = programCommands.ElementAt(0) as LogoRepeatCommand;
Assert.IsNotNull(firstRepeat);
Assert.AreEqual(3, firstRepeat.Repeat);
var secondCommand = firstRepeat.Commands.ElementAt(0) as LogoMoveCommand;
Assert.IsNotNull(secondCommand);
var secondRepeat = firstRepeat.Commands.ElementAt(1) as LogoRepeatCommand;
Assert.IsNotNull(secondRepeat);
Assert.AreEqual(2, secondRepeat.Repeat);
}
public void CanCreateLogoRoutine()
{
LogoController.CreateAndParse("TO RECTANGLE REPEAT 4 [ FORWARD 100 LEFT 90 ] END");
SymbolTableEntry routine = LogoController.LookupRoutine("RECTANGLE");
Assert.IsNotNull(routine);
Assert.AreEqual("RECTANGLE", routine.Name);
var routineAttribute = routine.Attributes[0] as SymbolTableRoutineAttribute;
Assert.IsNotNull(routineAttribute);
var firstCommand = routineAttribute.Commands[0] as LogoRepeatCommand;
Assert.IsNotNull(firstCommand);
Assert.AreEqual(4, firstCommand.Repeat);
Assert.AreEqual(2, firstCommand.Commands.Count());
}
public void CanCreateTwoSentenceLogoProgram()
{
ICollection <BaseLogoCommand> programCommands = LogoController.CreateAndParse("FORWARD 100 LEFT 90");
var firstCommand = programCommands.ElementAt(0) as LogoMoveCommand;
Assert.IsNotNull(firstCommand);
Assert.AreEqual(100, firstCommand.Distance);
TurtleSituation forwardSituation = firstCommand.CalculateSituation(TurtleSituation.DefaultSituation);
Assert.AreEqual(TurtleSituation.DefaultSituation.Angle, forwardSituation.Angle);
var secondCommand = programCommands.ElementAt(1) as LogoTurnCommand;
Assert.IsNotNull(secondCommand);
Assert.AreEqual(90, secondCommand.TurnAngle);
TurtleSituation leftSituation = secondCommand.CalculateSituation(forwardSituation);
Assert.AreEqual(TurtleSituation.DefaultSituation.Angle + 90, leftSituation.Angle);
}