public Form1()
{
InitializeComponent();
g = draw_box.CreateGraphics();
turtle = new Tortoise(0, new Point(draw_box.Size.Width / 2, draw_box.Size.Height / 2));
listToken = new Queue <string>();
Parser = new Parser();
}
public void Parse(Queue <string> tokenList, Tortoise turtle, System.Drawing.Graphics g)
{
while (tokenList.Count != 0)
{
string token = tokenList.Dequeue();
switch (token)
{
case "FORWARD":
System.Console.WriteLine("forward");
parseForward(tokenList, turtle, g);
break;
case "LEFT":
System.Console.WriteLine("left");
parseLeft(tokenList, turtle, g);
break;
case "RIGHT":
System.Console.WriteLine("right");
parseRight(tokenList, turtle, g);
break;
case "REPEAT":
Console.WriteLine("repeat");
parseRepeat(tokenList, turtle, g);
break;
case "BACKCENTER":
parseBackCenter(turtle);
break;
case "PENUP":
turtle.setPenUp();
break;
case "PENDOWN":
turtle.setPenDown();
break;
case "COLOR":
parseColor(tokenList, turtle, g);
break;
default:
using (Font myFont = new Font("Arial", 14))
{
g.DrawString("ERROR : Instruction expected", myFont, Brushes.Green, new Point(2, 2));
}
break;
}
}
}
private void test_run(object sender, EventArgs e)
{
listToken = new Queue <string>();
turtle = new Tortoise(0, new Point(draw_box.Size.Width / 2, draw_box.Size.Height / 2));
foreach (myPictureBox VARIABLE in layoutPanel.Controls)
{
Console.WriteLine(VARIABLE.token);
listToken.Enqueue(VARIABLE.token);
}
g.Clear(Color.White);
Parser.Parse(listToken, turtle, g);
listToken.Clear();
}
private void parseRepeat(Queue <string> tokenList, Tortoise turtle, System.Drawing.Graphics g)
{
int repeatNumber = getNumber(tokenList, g);
string token = "";
if (tokenList.Count != 0)
{
token = tokenList.Dequeue();
}
if (token != "LEFTBRACE")
{
using (Font myFont = new Font("Arial", 14))
{
g.DrawString("ERROR : Opening missing after number", myFont, Brushes.Green, new Point(2, 2));
return;
}
}
Queue <string> subTokenQueue = new Queue <string>();
while ((tokenList.Count != 0) && (tokenList.Peek() != "RIGHTBRACE"))
{
subTokenQueue.Enqueue(tokenList.Dequeue());
}
if (tokenList.Count == 0)
{
using (Font myFont = new Font("Arial", 14))
{
g.DrawString("ERROR : Closing missing after instructions", myFont, Brushes.Green, new Point(2, 2));
return;
}
}
for (int i = 0; i < repeatNumber; ++i)
{
Parse(cloneQueue(subTokenQueue), turtle, g);
}
tokenList.Dequeue();
}
private void parseRight(Queue <string> tokenList, Tortoise turtle, Graphics g)
{
turtle.turnRight(getNumber(tokenList, g));
}
private void parseForward(Queue <string> tokenList, Tortoise turtle, System.Drawing.Graphics g)
{
turtle.updateAndMove(getNumber(tokenList, g), g);
}
private void parseColor(Queue <string> tokenList, Tortoise turtle, Graphics g)
{
turtle.changeColor(getNumber(tokenList, g));
}
private void parseBackCenter(Tortoise turtle)
{
turtle.goCenter();
}
