private GSCore execForeach(GSCoreCollection args)
{
if (args.Count < 4)
{
Debugger.Log(0, "", "Insufficient arguments for (FOREACH varName : list commands ) ");
return(null);
}
GSCore t1 = args.getSafe(0);
GSCore l1 = ExecuteElement(args.getSafe(2));
if (!(t1 is GSToken))
{
Debugger.Log(0, "", "Token shoudl be second argument in FOREACH ");
return(null);
}
if (!(l1 is GSList))
{
Debugger.Log(0, "", "List should be fourth argument in FOREACH ");
return(null);
}
GSToken tk = (GSToken)t1;
GSList lst = (GSList)l1;
GSCore r = null;
int ik = 0;
foreach (GSCore item in lst.Parts)
{
SetVariable(tk.Token, item);
for (int i = 3; i < args.Count; i++)
{
r = ExecuteElement(args.getSafe(i));
if (r is GSReturn)
{
break;
}
}
ik++;
if (r is GSReturn)
{
GSReturn ret = r as GSReturn;
if (ret.Type == GSReturn.TYPE_BREAK)
{
break;
}
if (ret.Type == GSReturn.TYPE_RETURN)
{
return(ret);
}
}
}
return(new GSNumber(ik));
}
private GSCore execIf(GSCoreCollection args)
{
GSCore cond = ExecuteElement(args.getSafe(0));
GSCore cmd1 = args.getSafe(1);
GSCore cmd2 = args.getSafe(2);
GSCore r = null;
if (cond.getBooleanValue())
{
bool running = false;
foreach (GSCore cmd in args)
{
if (cmd is GSToken && cmd.ToString().Equals("then"))
{
running = true;
}
if (cmd is GSToken && cmd.ToString().Equals("else"))
{
running = false;
}
if (running)
{
r = ExecuteElement(cmd);
if (r is GSReturn)
{
return(r);
}
}
}
}
else
{
bool running = false;
foreach (GSCore cmd in args)
{
if (cmd is GSToken && cmd.ToString().Equals("else"))
{
running = true;
}
if (running)
{
r = ExecuteElement(cmd);
if (r is GSReturn)
{
return(r);
}
}
}
}
return(cond);
}
private GSCore execWhile(GSCoreCollection args)
{
GSCoreCollection commands = args.getSublist(1);
GSCore r = null;
while (ExecuteElement(args.getSafe(0)).getBooleanValue())
{
foreach (GSCore cmd in commands)
{
r = ExecuteElement(cmd);
if (r is GSReturn)
{
break;
}
}
if (r is GSReturn)
{
GSReturn ret = r as GSReturn;
if (ret.Type == GSReturn.TYPE_BREAK)
{
break;
}
if (ret.Type == GSReturn.TYPE_RETURN)
{
return(ret);
}
}
}
return(GSCore.Void);
}
private GSCore execMessage(GSCoreCollection args)
{
GSCore result = GSCore.Void;
// first is token, name of variable, object
// second is token, message name
// third etc are arguments
if (args.Count >= 2 && args.getSafe(0) is GSToken && args.getSafe(1) is GSToken)
{
// evaluate the remaining portion of list
GSCoreCollection subArgs = getNativeValues(args.getSublist(2));
// first and second tokens
GSToken t1 = args.getSafe(0) as GSToken;
GSToken t2 = args.getSafe(1) as GSToken;
// evaluate reference to object
GSCore obj = ExecuteElement(t1);
// execute message in the object
result = obj.ExecuteMessage(t2.Token, subArgs);
}
return(result);
}
public override GSCore ExecuteMessage(string token, GSCoreCollection args)
{
if (token.Equals("replace"))
{
string a1 = args.getSafe(0).getStringValue();
string a2 = args.getSafe(1).getStringValue();
if (a1.Length > 0)
{
return(new GSString(Value.Replace(a1, a2)));
}
else
{
return(this);
}
}
else if (token.Equals("substring"))
{
int a = (int)args.getSafe(0).getIntegerValue();
int b = (int)args.getSafe(1).getIntegerValue();
if (b == 0)
{
return(new GSString(Value.Substring(a)));
}
else
{
return(new GSString(Value.Substring(a, b)));
}
}
else if (token.Equals("padLeft"))
{
int a = (int)args.getSafe(0).getIntegerValue();
if (a > Value.Length)
{
return(new GSString(Value.PadLeft(a)));
}
else
{
return(this);
}
}
else if (token.Equals("padRight"))
{
int a = (int)args.getSafe(0).getIntegerValue();
if (a > Value.Length)
{
return(new GSString(Value.PadRight(a)));
}
else
{
return(this);
}
}
else
{
return(base.ExecuteMessage(token, args));
}
}
public override GSCore ExecuteMessage(string token, GSCoreCollection args)
{
GSCore result = null;
if (token.Equals("add") || token.Equals("+"))
{
result = execAdd(getNativeValues(args));
}
else if (token.Equals("sub") || token.Equals("-"))
{
result = execSub(getNativeValues(args));
}
else if (token.Equals("mul") || token.Equals("*"))
{
result = execMul(getNativeValues(args));
}
else if (token.Equals("div") || token.Equals("/"))
{
result = execDiv(getNativeValues(args));
}
else if (token.Equals("and") || token.Equals("&"))
{
result = execAnd(getNativeValues(args));
}
else if (token.Equals("or") || token.Equals("|"))
{
result = execOr(getNativeValues(args));
}
else if (token.Equals("not") || token.Equals("!"))
{
result = execNot(args);
}
else if (token.Equals("set") && args.Count > 1)
{
result = execSet(args[0], args[1]);
}
else if ((token.Equals("gt") || token.Equals(">")) && args.Count > 1)
{
result = execGt(getNativeValues(args));
}
else if ((token.Equals("ge") || token.Equals(">=")) && args.Count > 1)
{
result = execGe(getNativeValues(args));
}
else if ((token.Equals("eq") || token.Equals("==")) && args.Count > 1)
{
result = execEq(getNativeValues(args));
}
else if ((token.Equals("ne") || token.Equals("!=")) && args.Count > 1)
{
result = execNe(getNativeValues(args));
}
else if ((token.Equals("le") || token.Equals("<=")) && args.Count > 1)
{
result = execLe(getNativeValues(args));
}
else if ((token.Equals("lt") || token.Equals("<")) && args.Count > 1)
{
result = execLt(getNativeValues(args));
}
else if (token.Equals("print"))
{
result = execPrint(args, false);
}
else if (token.Equals("println"))
{
result = execPrint(args, true);
}
else if (token.Equals("if"))
{
result = execIf(args);
}
else if (token.Equals("while"))
{
result = execWhile(args);
}
else if (token.Equals("foreach"))
{
result = execForeach(args);
}
else if (token.Equals("x"))
{
result = execMessage(args);
}
else if (token.Equals("do"))
{
result = execDo(args);
}
else if (token.Equals("return"))
{
result = new GSReturn(args.getSafe(0));
}
else if (token.Equals("break"))
{
result = new GSReturn(GSReturn.TYPE_BREAK);
}
else if (token.Equals("continue"))
{
result = new GSReturn(GSReturn.TYPE_CONTINUE);
}
else
{
Debugger.Log(0, "", "UNKNOWN MESSAGE: " + token + " ");
}
return(result);
}
