public ISymbol ToValue(SymbolToken token)
{
if (token.Type != SymbolType.Number && token.Type != SymbolType.Variable)
{
throw new ArgumentException("Not a number", nameof(token));
}
if (token.Type == SymbolType.Variable)
{
return(_ctx.Get(token));
}
var s = token.Token;
if (!s.Contains("."))
{
var i = int.Parse(s);
return(new Number(i));
}
var f = double.Parse(s);
return(new Number(f));
}
public static bool TryParse(string val, out SymbolToken token)
{
if (SymbolicOperators.ContainsKey(val))
{
var type = SymbolicOperators[val];
token = new SymbolToken(type, val);
return(true);
}
if (TextOperators.ContainsKey(val))
{
var type = TextOperators[val];
token = new SymbolToken(type, val);
return(true);
}
int integer;
if (int.TryParse(val, out integer))
{
var type = SymbolType.Number;
token = new SymbolToken(type, val);
return(true);
}
double floating;
if (double.TryParse(val, out floating))
{
var type = SymbolType.Number;
token = new SymbolToken(type, val);
return(true);
}
token = null;
return(false);
}
public ISymbol Get(SymbolToken token)
{
return(Get(token.Token));
}
