//TODO TESTS
private static void Command(ListController <TokenModel> lc)
{
var beg = lc.GetNext();
if (TypesTools.IsType(beg.Text))
{
lc.SetBack();
Initialization(lc);
}
else if (VarTable.Contains(beg.Text))
{
lc.SetBack();
var node = VariableAssign(lc);
Commands.Add(node);
}
else if (FuncTable.Contains(beg.Text))
{
lc.SetBack();
var node = FuncExecute(lc);
Commands.Add(node);
}
else
{
throw new ParseException($"Cannot resolve '{beg.Text}'", beg);
}
//todo lately var = Arithmetic Expression
//todo more lately type func
}
//TODO TESTS
private static void Initialization(ListController <TokenModel> lc)
{
var type = lc.GetNext();
var name = TryGetNext(lc, "Variable name expected");
if (!Constants.Alphabet.Contains(name.Text[0]))
{
throw new ParseException("Unexpected token", name);
}
if (VarTable.Contains(name.Text) || FuncTable.Contains(name.Text))
{
throw new ParseException("Member with the same name is already declared", name);
}
VarTable.Add(name.Text, type.Text);
}
//TODO TESTS
private static AssingNode VariableAssign(ListController <TokenModel> lc)
{
var variableToken = lc.GetNext();
CheckEqual(TryGetNext(lc, "= expected"), "=", "= expected");
var func = TryGetNext(lc, "Expression expected");
var res = new AssingNode();
var variable = VarTable.Get(variableToken.Text);
res.Left = variable;
if (FuncTable.Contains(func.Text))
{
lc.SetBack();
var fn = FuncExecute(lc);
res.Right = fn;
}
else
{
throw new ParseException("Function expected", func);
}
return(res);
}