/g/ lang

// lol C#

public class GStackVar
    {
        public Int32 name;
        public Double value;

        public GStackVar(String name, Double value)
        {
            this.name = name.GetHashCode();
            this.value = value;
        }
    }


        static GStackVar FindInStack(List<GStackVar> stack, String name)
        {
            Int32 n;

            n = name.GetHashCode();
            foreach (GStackVar var in stack)
            {
                if (var.name == n)
                    return var;
            }

            return null;
        }

        // do it math? nope.
        static Double Evaluate(String[] line, Int32 start)
        {
            Double value;

            if (!Double.TryParse(line[start], out value))
                throw new Exception();

            return value;
        }

        static void Main()
        {
            StreamReader reader;
            List<GStackVar> stack;
            Int32 linenum;
            String line;
            String[] split;
            GStackVar var;

            reader = new StreamReader("C:\\main.g");
            stack = new List<GStackVar>();
            linenum = 0;

            while (!reader.EndOfStream)
            {
                line = reader.ReadLine();
                if (String.IsNullOrEmpty(line))
                    continue;
                if (line[0] != '>')
                    continue;

                line = line.Substring(1);
                split = line.Split(' ');

                if (split[0] == "implying" && split[2] == "=")
                {
                    var = FindInStack(stack, split[1]);

                    if (var == null && !Char.IsNumber(split[1][0]))
                        stack.Add(new GStackVar(split[1], Evaluate(split, 3)));
                    else
                        var.value = Evaluate(split, 3);
                }
                else if (split[0] == "mfw")
                {
                    var = FindInStack(stack, split[1]);

                    if (var == null)
                        Console.WriteLine("line {0}: Unknown variable \"{1}\"", linenum, split[1]);
                    else
                        Console.WriteLine(var.value);
                }
                else if (split[0] == "yfw")
                {
                    var = FindInStack(stack, split[1]);

                    if (var == null)
                        Console.WriteLine("line {0}: Unknown variable \"{1}\"", linenum, split[1]);
                    else
                    {
                        var.value = Double.Parse(Console.ReadLine());
                    }
                }
                else
                {
                    Console.WriteLine("line {0}: Unknown instruction \"{1}\"", linenum, split[0]);
                }

                linenum++;
            }
        }