static void Main(string[] args)
{
List <Variable> variables = new List <Variable>();
Dictionary <string, Function> func = new Dictionary <string, Function>();
while (running)
{
Console.Write('>');
string input = Console.ReadLine(); if (input.StartsWith("rem"))
{
string s = input.Substring(3);
s = s.Trim();
Console.WriteLine(">> " + s);
}
else
{
Lexer l = new Lexer();
l.ScanWhiteSpaces = true;
l.Scan(new StringReader(input));
Parser p = new Parser(l.tokens);
if (p.Parse())
{
foreach (Node n in p.tree)
{
if (n is Expression)
{
StackStuff stack = new StackStuff();
if (interpretExpression(stack, (Expression)n, variables, func))
{
Console.WriteLine(">> " + string.Format("{0:N2}", stack.getResult()));
}
}
else if (n is Declaration)
{
StackStuff stack = new StackStuff();
if (interpretExpression(stack, ((Declaration)n).e, variables, func))
{
if (!isVariable(variables, ((Declaration)n).name))
{
Variable v = new Variable();
v.name = ((Declaration)n).name;
v.value = stack.getResult();
variables.Add(v);
Console.WriteLine(">> " + v.name + " = [" + v.value + "]");
}
else
{
Variable v = getVariable(variables, (((Declaration)n).name));
v.value = stack.getResult();
Console.WriteLine(">> " + v.name + " = [" + v.value + "]");
}
}
}
else if (n is Function)
{
StackStuff stack = new StackStuff();
List <Variable> vars = new List <Variable>();
foreach (Declaration arg in ((Function)n).args)
{
Variable v = new Variable();
v.name = arg.name;
vars.Add(v);
}
if (getFunction(func, ((Function)n).name) != null)
{
func[((Function)n).name] = (Function)n;
}
else
{
func.Add(((Function)n).name, (Function)n);
}
Console.WriteLine(">> " + ((Function)n).name + " => " + ((Function)n).exp);
}
}
}
}
}
}
