BrainfuckInterpreter.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading.Tasks;

namespace BrainfuckExtanded {
    public enum OutputMode {
        Chars,
        Numbers,
        NumberList
    }

    public class BrainfuckInterpreter {

        static void help() {
            Console.WriteLine("+\t|increment value");
            Console.WriteLine("-\t|decrement value");
            Console.WriteLine(">\t|increment the data pointer");
            Console.WriteLine("<\t|decrement the data pointer");
            Console.WriteLine("[code]\t|loop execute while value is not 0");
            Console.WriteLine("v1?v2{v1 is greater:v2 is greater}");
            Console.WriteLine("0\t|");
            Console.WriteLine("1\t|");
            Console.WriteLine("%\t|");
        }
        private OutputMode outputmode = OutputMode.Chars;
        public OutputMode outputMode {
            get { return outputmode; }
            set {
                if (value == OutputMode.NumberList)
                    Console.Write("[]");
                outputmode = value;
            }
        }
        string code = "";
        static Random r = new Random();
        public string Code => code;
        List<int> values = new List<int>() { 0 };
        int pointer = 0;
        List<int> pointers = new List<int>();
        int Pointer {
            get { return pointer; }
            set {
                if (pointer < 0) {
                    pointer = 0;
                    return;
                }
                if (values.Count <= value) values.Add(0);
                pointer = value;
            }
        }
        public BrainfuckInterpreter(string str) {
            code = str.Replace(" ","").Replace("\t", "");
        }

        public BrainfuckInterpreter(StreamReader sr) {
            code = sr.ReadToEnd().Replace(" ","").Replace("\t","");
            sr.Close();
            sr.Dispose();
        }

        public void run() {
            int open = 0;
            for (int i = 0; i < code.Length; i++) {
                switch (code[i]) {
                    case '+':
                    values[pointer]++;
                    break;
                    case '-':
                    values[pointer]--;
                    break;
                    case '<':
                    Pointer--;
                    break;
                    case '>':
                    Pointer++;
                    break;
                    case '[':
                    if (values[pointer] == 0) {
                        open = 1;
                        for (i = i + 1; i < code.Length; i++) {
                            if (code[i] == '[') open++;
                            if (code[i] == ']') open--;
                            if (open == 0) break;
                        }
                    }
                    break;
                    case ']':
                    open = 1;
                    i--;
                    for (; i > 0; i--) {
                        if (code[i] == ']') open++;
                        if (code[i] == '[') open--;
                        if (open == 0) {
                            i--;
                            break;
                        }
                    }
                    break;
                    case '.':
                    switch (outputmode) {
                        case OutputMode.Numbers:
                        Console.WriteLine($"p:{pointer}\tvalue:{values[pointer]}\t"+
                            $"0x{Convert.ToString(values[pointer], 16).PadLeft(8,'0')}\t"+
                            Convert.ToString(values[pointer],2).PadLeft(32,'0'));
                        break;
                        case OutputMode.Chars:
                        Console.Write((char)values[pointer]);
                        break;
                        case OutputMode.NumberList:
                        Console.Write($"\b,{values[pointer]}]");
                        break;
                    }
                    break;
                    case ',':
                    var key = Console.ReadKey(true);
                    if (!char.IsControl(key.KeyChar)) 
                        values[pointer] = key.KeyChar;
                    break;
                    case '?':
                    break;
                    case '0':
                    if (i > 0 && (code[i - 1] == '%' || code[i - 1] == '0' || code[i - 1] == '1')) {
                        values[pointer] = values[pointer] << 1;
                    } else values[pointer] = 0;
                    break;
                    case '1':
                    if (i > 0 && (code[i - 1] == '%' || code[i - 1] == '0' || code[i - 1] == '1')) {
                        values[pointer] = (values[pointer] << 1) + 1;
                    } else values[pointer] = 1;
                    break;
                    case '%':
                    if (i > 0 && code[i - 1] != '0' && code[i - 1] != '1')
                        values[pointer] = 0;
                    for (; code[i] == '%'; i++) {
                        values[pointer] = (values[pointer] << 1) + r.Next(0, 100) % 2;
                    }
                    i--;
                    break;
                    case '(':
                    break;
                    case ')':
                    break;
                }
            }
        }

    }
}