/// <summary>
/// Executes commands.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void CommandLineInterface_KeyDown(object sender, KeyEventArgs e)
{
string[] commandLines = CommandLineInterface.Lines; // Get each line from the CommandLineInterface and separate them.
string[] allLines = ProgramArea.Lines; // Get each line from the ProgramArea too.
var parser = new CommandParser(this.varCommand); // Uses the CommandParser() to parse input.
if (e.KeyCode == Keys.Enter || commandLines.Contains("run"))
{
varCommand.Clear();
methodCommand.Reset(); // everytime loop refreshes - prevents leftovers
List <String> allCommands = allLines.ToList <String>();
allCommands.AddRange(commandLines);
// Do something for each line.
for (int i = 0; i < allCommands.Count; i++)
{
try
{
String line = allCommands[i];
// If it's the "draw to" line...
if (line.Trim().ToLower().Contains("draw to"))
{
// Get the parts past the command.
var tokens = parser.TokenizeCommand(line, "draw to");
// If they are both numbers...
if (int.TryParse(tokens[0].Trim(), out int x) &&
int.TryParse(tokens[1].Trim(), out int y))
{
// Draw a line to the indicated position.
Canvas.DrawTo(x, y);
}
}
else if (line.Trim().ToLower().Contains("rect"))
{
// Get the parts past the command.
var tokens = parser.TokenizeCommand(line, "rect");
// If they are both numbers...
if (int.TryParse(tokens[0].Trim(), out int t) &&
int.TryParse(tokens[1].Trim(), out int v))
{
// Draw to the indicated position.
Canvas.DrawRectangle(t, v);
}
}
else if (line.Trim().ToLower().Contains("circle"))
{
// Get the parts past the command.
var tokens = parser.TokenizeCommand(line, "circle");
// If they are both numbers...
if (float.TryParse(tokens[0].Trim(), out float R))
{
// Draw to the indicated position.
Canvas.DrawCircle(R);
}
}
else if (line.Trim().ToLower().Contains("triangle"))
{
// Get the parts past the command.
var tokens = parser.TokenizeCommand(line, "triangle");
// If they are both numbers...
if (int.TryParse(tokens[0].Trim(), out int T) &&
int.TryParse(tokens[1].Trim(), out int T2))
{
// Draw to the indicated position.
Canvas.DrawTriangle(T, T2);
}
}
else if (line.Trim().ToLower().Contains("move to"))
{
// Get the parts past the command.
var tokens = parser.TokenizeCommand(line, "move to");
// If they are both numbers...
if (int.TryParse(tokens[0].Trim(), out int move) &&
int.TryParse(tokens[1].Trim(), out int move2))
{
// Draw to the indicated position.
Canvas.MovePen(move, move2);
}
}
else if (line.Trim().ToLower().Contains("pen colour"))
{
var tokens = parser.TokenizeCommand(line, "pen colour");
// to ensure its a string...
if (tokens.Length > 0)
{
var colour = tokens[0].Trim();
Canvas.PenColour(colour);
}
}
else if (line.Trim().ToLower().Contains("fill pen"))
{
var tokens = parser.TokenizeCommand(line, "fill pen");
// to ensure its a string...
if (tokens.Length > 0)
{
var mode = tokens[0].Trim();
Canvas.FillPen(mode);
}
}
else if (line.Trim().ToLower().Equals("clear"))
{
Canvas.Clear();
}
else if (line.Trim().ToLower().Equals("reset"))
{
Canvas.Reset();
}
else if (line.Equals("run") || line.Equals("")) // "" is when return is pressed
{
Console.WriteLine("no error to display..."); // Both are correct inputs
}
else if (line.Trim().ToLower().Contains("loop for "))
{
loopCommand.SetStartLineNo(i);
var tokens = parser.TokenizeCommand(line.Trim().ToLower(), "loop for");
loopCommand.SetLoopCount(varCommand.Parse(tokens[0]));
i = loopCommand.EndLoop(allCommands, i);
}
else if (line.Trim().ToLower().Contains("end for"))
{
i = loopCommand.getStartLineNo() - 1;
}
else if (line.Contains(" = ") || line.Contains(" + ") || line.Contains(" - "))
{
varCommand.Parse(line);
}
else if (line.Trim().ToLower().Contains("if "))
{
var split_tokens = line.Trim().ToLower().Substring("if".Length);
String[] tokens = split_tokens.Trim().ToLower().Split('=');
if (varCommand.Parse(tokens[0]) != varCommand.Parse(tokens[1]))
{
i = ifElseCommands.IfCommand(allCommands); // i Is the loop we are in and executes them all within if
}
else
{
ifElseCommands.Reset();
}
}
else if (line.Trim().ToLower().Contains("endif"))
{
// SKIP
}
else if (line.Trim().ToLower().Contains("method "))
{
i = methodCommand.RegisterMethod(allCommands, i);
}
else if (line.Trim().ToLower().Contains("endmethod"))
{
i = methodCommand.ReturnMethod(allCommands);
}
else if (line.Trim().ToLower().Contains("(") &&
line.Trim().ToLower().Contains(")")) // () specifies method
{
i = methodCommand.CallMethod(allCommands, line.Trim().ToLower(), i);
}
else
{
InvalidInput();
}
}
catch (Exception) // When wrong input entered
{
InvalidInput();
}
}
CommandLineInterface.Text = ""; // Clears the CLI
Refresh(); // Ensures the user input is generated stryt after
}
}
