public static bool TryScan(CodeReader reader, out ForCommand command)
{
command = null;
string line = reader.NextLine();
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string variable = line.Split(':')[0];
int min = int.Parse(line.Split('(', ' ')[2]);
int max = int.Parse(Regex.Match(line, " to " + RegExHelper.Integer + " in ").Value.Split(new string[] { " to ", " in " }, StringSplitOptions.RemoveEmptyEntries)[0]);
int increment = 1; //TODO
List <Command> commands = new List <Command>();
line = reader.NextLine();
while (!reader.Done && line != "endfor")
{
if (TryScan(line, out Command cmd))
{
commands.Add(cmd);
}
else
{
throw new ArgumentException();
}
line = reader.NextLine();
}
command = new ForCommand(variable, new CommandCollection(commands.ToArray()), min, max, increment);
return(true);
}
public static bool TryScan(CodeReader reader, out Pattern scanned)
{
scanned = null;
string line = reader.NextLine();
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string name = line.Substring("pattern ".Length).Trim(':');
scanned = new Pattern(name);
line = reader.NextLine();
while (!reader.Done && !reader.EndingKeyword)
{
if (Command.TryScan(reader.Copy(), out Command command))
{
scanned.AddCommand(command);
reader.Skip(command.Lines - 1);
line = reader.NextLine();
}
else
{
throw new Exception("Unknown Command in Line " + reader.TextLine + ".");
}
}
return(true);
}
public static bool TryScan(CodeReader reader, out Style scanned)
{
scanned = null;
string line = reader.NextLine();
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string name = Regex.Match(line, @"(std:|" + RegExHelper.Variable + @"\()").Value;
name = name.Remove(name.Length - 1);
scanned = new Style(name);
line = reader.NextLine();
while (!reader.Done && !reader.EndingKeyword)
{
if (Instruction.TryScan(reader.Copy(), out Instruction instruction))
{
scanned.AddInstruction(instruction);
line = reader.NextLine();
}
else if (StaticFunctionCallCommand.TryScan(line, out StaticFunctionCallCommand command))
{
scanned.AddCommand(command);
line = reader.NextLine();
}
else
{
throw new Exception("Unkwon Command in Line " + reader.CurrentLine + ".");
}
}
return(true);
}
public static bool TryScan(CodeReader reader, out CaseCommand command)
{
command = null;
string line = reader.NextLine().Trim('\r');
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
if (TryScan(line.Remove(line.Length - 1).Substring("case ".Length), out Command condition))
{
line = reader.NextLine().Trim('\r');
List <Command> body = new List <Command>();
while (line != "endswitch" && !Regex.IsMatch(line, RegEx) && !reader.Done)
{
if (TryScan(line, out Command cmd))
{
body.Add(cmd);
}
else
{
throw new Exception("Unexpected Command in switch-case!");
}
line = reader.NextLine().Trim('\r');
}
command = new CaseCommand(condition, new CommandCollection(body.ToArray()));
return(true);
}
return(false);
}
public static bool TryScan(CodeReader reader, Presentation parent, out Slide slide)
{
slide = null;
string line = reader.NextLine();
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string name = Regex.Match(line, RegExHelper.String).Value.Trim('@', '\'');
slide = new Slide(name, parent);
line = reader.NextLine();
Step normalStep = null;
while (!reader.Done && !reader.EndingKeyword)
{
if (Step.TryScan(reader.Copy(), slide, out Step step))
{
if (normalStep != null)
{
slide.AddStep(normalStep);
}
normalStep = null;
reader.Skip(step.LineLength - 1);
slide.AddStep(step);
}
else
{
if (normalStep == null)
{
normalStep = new Step("normal", slide);
}
if (Command.TryScan(reader.Copy(), out Command command))
{
reader.Skip(command.Lines - 1);
normalStep.Add(command);
}
else if (StaticFunctionCallCommand.TryScan(line, out StaticFunctionCallCommand functionCallCommand))
{
reader.Skip(functionCallCommand.Lines - 1);
normalStep.Add(functionCallCommand);
}
else
{
throw new ArgumentException("Unknown Command in Line " + reader.CurrentLine + ".");
}
}
line = reader.NextLine();
}
if (normalStep != null)
{
slide.AddStep(normalStep);
}
return(true);
}
public static bool TryScan(CodeReader reader, Slide parent, out Step scanned)
{
scanned = null;
string line = reader.NextLine();
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string name = Regex.Match(line, RegExHelper.String).Value.Trim('\'');
scanned = new Step(name, parent);
line = reader.NextLine();
while (!reader.Done && !reader.EndingKeyword && !Regex.IsMatch(line, RegEx))
{
if (String.IsNullOrWhiteSpace(line))
{
line = reader.NextLine();
continue;
}
if (Command.TryScan(reader.Copy(), out Command command))
{
reader.Skip(command.Lines - 1);
scanned.Add(command);
}
else if (StaticFunctionCallCommand.TryScan(line, out StaticFunctionCallCommand functionCallCommand))
{
reader.Skip(functionCallCommand.Lines - 1);
scanned.Add(functionCallCommand);
}
else
{
throw new ArgumentException("Unknwon Command in Line " + reader.TextLine + ".");
}
line = reader.NextLine();
}
return(true);
}
public static bool TryScan(CodeReader reader, out AssignmentCommand command)
{
command = null;
string line = reader.NextLine().Trim(';');
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string name = line.Split(':')[0];
string value = String.Join(":", line.Split(':').Skip(1));
if (TryScan(value, out Command constructor))
{
command = new AssignmentCommand(name, constructor, constructor.ReturnType);
return(true);
}
return(false);
}
public static bool TryScan(CodeReader reader, out Command scanned)
{
scanned = null;
string line = reader.NextLine().Trim(';');
if (Regex.IsMatch(line, LoopCommand.RegEx))
{
string loop = line.Split(':')[0];
string fpsStr = Regex.Match(loop, RegExHelper.Integer + "fps").Value;
if (!int.TryParse(fpsStr.Trim('f', 'p', 's'), out int fps))
{
fps = 30;
}
int times = -1;
string timesStr = Regex.Match(loop, RegExHelper.Integer + "(" + RegExHelper.Time + ")?").Value;
if (!int.TryParse(Regex.Match(timesStr, RegExHelper.Integer).Value, out times))
{
times = -1;
}
if (TryScan(line.Substring(line.IndexOf(':') + 1), out Command cmd))
{
scanned = new LoopCommand(cmd, fps, times);
return(true);
}
}
if (Regex.IsMatch(line, FunctionCallCommand.RegEx))
{
string obj = line.Split('.')[0];
string method = line.Split('.', '(')[1];
string parameters = line.Substring(line.IndexOf(method) + method.Length);
if (TryScan(parameters, out Command cmd))
{
scanned = new FunctionCallCommand(obj, method, (ParameterCommand)cmd);
return(true);
}
}
if (Regex.IsMatch(line, RegExWholeLine(SetPropertyCommand.RegEx)))
{
string obj = line.Split('.')[0];
string property = line.Split('.', ':')[1];
string value = line.Substring(line.IndexOf(property) + property.Length + 1);
if (TryScan(value, out Command cmd))
{
scanned = new SetPropertyCommand(obj, property, cmd);
return(true);
}
}
if (Regex.IsMatch(line, Command.RegExWholeLine(AssignmentCommand.RegEx)))
{
if (AssignmentCommand.TryScan(reader.Copy(), out AssignmentCommand cmd))
{
scanned = cmd;
return(true);
}
}
if (Regex.IsMatch(line, RegExWholeLine(SetArrayCommand.RegEx)))
{
string variable = line.Split('[')[0];
string number = line.Split('[', ']')[1];
string command = string.Join(":", line.Split(':').Skip(1)).Trim();
if (Command.TryScan(command, out Command val))
{
if (int.TryParse(number, out int index))
{
scanned = new SetArrayCommand(variable, index, val);
return(true);
}
}
}
if (Regex.IsMatch(line, ForCommand.RegEx))
{
if (ForCommand.TryScan(reader.Copy(), out ForCommand cmd))
{
scanned = cmd;
return(true);
}
}
if (Regex.IsMatch(line, GotoCommand.RegEx))
{
throw new NotImplementedException();
}
if (Regex.IsMatch(line, IfCommand.Regex))
{
if (TryScan(line.Split('(', ')')[1], out Command condition))
{
List <Command> body = new List <Command>();
while (line != "endif" && !reader.Done)
{
line = reader.NextLine();
if (TryScan(reader.Copy(), out Command cmd))
{
body.Add(cmd);
}
else
{
throw new Exception("Unknown Command at Line " + reader.TextLine + ".");
}
line = reader.NextLine().Trim();
}
scanned = new IfCommand(condition, new CommandCollection(body.ToArray()));
return(true);
}
}
if (Regex.IsMatch(line, SwitchCommand.Regex))
{
if (TryScan(line.Split('(', ')')[1], out Command condition))
{
List <CaseCommand> body = new List <CaseCommand>();
while (line != "endswitch" && !reader.Done)
{
if (Regex.IsMatch(line, CaseCommand.RegEx))
{
if (CaseCommand.TryScan(reader.Copy(), out CaseCommand cmd))
{
body.Add(cmd);
}
else
{
throw new Exception("Unknown Command at Line " + reader.TextLine + ".");
}
}
line = reader.NextLine().Trim();
}
scanned = new SwitchCommand(condition, body.ToArray());
return(true);
}
}
if (Regex.IsMatch(line, WhileCommand.Regex))
{
throw new NotImplementedException();
}
if (Regex.IsMatch(line, RegExWholeLine(StyleCommand.RegEx)))
{
if (StyleValue.TryScan(line, out StyleValue styleValue))
{
scanned = new StyleCommand(styleValue);
return(true);
}
}
if (Regex.IsMatch(line, ApplyStyleCommand.RegEx))
{
if (line.Count(c => c == '.') > 0)
{
Console.WriteLine("ApplyStyleCommand: " + line);
string lastHalf = line.Split('.').Last();
string firstHalf = line.Remove(line.Length - lastHalf.Length - 1);
string name = lastHalf.Trim('(', ')');
if (TryScan(firstHalf, out Command cmd))
{
scanned = new ApplyStyleCommand(Style.GetByName(name), cmd);
return(true);
}
}
else
{
Console.WriteLine("ApplyStyleCommand: " + line);
}
}
//if (Regex.IsMatch(line, ValueCommand.RegEx))
// throw new NotImplementedException();
//if (Regex.IsMatch(line, CommandCollection.Regex))
// throw new NotImplementedException();
return(false);
}
public static bool TryScan(CodeReader reader, out Instruction scanned)
{
string line = reader.NextLine().Trim(';');
return(TryScan(line, out scanned));
}