private static IGenericExpression <T> ParseGenericExpression <T>(string line, string fullLine, Dictionary <string, object> variables)
{
ExpressionContext context = FleeHelper.GetExpression(variables);
try {
return(context.CompileGeneric <T>(line));
}
catch (Exception e) {
throw new ParsingException($"Unable to parse expression of {typeof(T).FullName} from '{line}'", line, e);
}
}
private static IDynamicExpression ParseDynamicExpression(string line, string fullLine, Dictionary <string, object> variables)
{
ExpressionContext context = FleeHelper.GetExpression(variables);
try {
return(context.CompileDynamic(line));
}
catch (Exception e) {
throw new ParsingException($"Unable to parse expression from '{line}'", line, e);
}
}
public MoveData(string[] args, Dictionary <string, object> variables, string line) : base(variables, line, args)
{
ExpressionContext expression = FleeHelper.GetExpression(variables);
string exceptionMessage = "";
if (args.Length > 2)
{
throw new ParsingException("Extra agruments supplied, maximum of 2 allowed for this function.", line);
}
try {
exceptionMessage = "Invalid expression for X coordinate!";
x = expression.CompileGeneric <double>(args[0]);
exceptionMessage = "Invalid expression for Y coordinate!";
y = expression.CompileGeneric <double>(args[1]);
}
catch (Exception e) {
throw new ParsingException(exceptionMessage, line, e);
}
}
public override TurtleData Compile(CancellationToken token)
{
token.ThrowIfCancellationRequested();
Brush brush;
if (Parameters.Length == 1)
{
string colorData = Arg1;
foreach (string key in Variables.Keys)
{
if (colorData.Contains(key) && colorData != "random")
{
colorData = colorData.Replace(key, Variables[key].ToString());
}
}
try {
brush = (Brush) new BrushConverter().ConvertFromString(Arg1 == "random" ? RandColor() : Arg1);
}
catch (FormatException e) {
throw new ParsingException("Invalid token for 'Color'", Line, e);
}
}
else if (Parameters.Length == 3)
{
ExpressionContext c = FleeHelper.GetExpression(Variables);
try {
byte r = Convert.ToByte(c.CompileGeneric <double>(Arg1).Evaluate());
byte g = Convert.ToByte(c.CompileGeneric <double>(Arg2).Evaluate());
byte b = Convert.ToByte(c.CompileGeneric <double>(Arg3).Evaluate());
brush = new SolidColorBrush(new Color()
{
A = byte.MaxValue, R = r, G = g, B = b
});
}
catch (Exception e) {
throw new ParsingException("Invalid value, expected " + typeof(byte).Name, Line, e);
}
}
else if (Parameters.Length == 4)
{
ExpressionContext c = FleeHelper.GetExpression(Variables);
try {
byte a = Convert.ToByte(c.CompileGeneric <double>(Arg1).Evaluate());
byte r = Convert.ToByte(c.CompileGeneric <double>(Arg2).Evaluate());
byte g = Convert.ToByte(c.CompileGeneric <double>(Arg3).Evaluate());
byte b = Convert.ToByte(c.CompileGeneric <double>(Arg4).Evaluate());
brush = new SolidColorBrush(new Color()
{
A = a, R = r, G = g, B = b
});
}
catch (Exception e) {
throw new ParsingException("Invalid value, expected " + typeof(byte).Name, Line, e);
}
}
else
{
throw new ParsingException("Non-existent overload for function!", Line);
}
brush.Freeze();
return(new TurtleData {
Brush = brush,
Action = Action,
});
}