pkj.cs

a compiler in java that parses and creates lexer analyzer

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Parser
{
    class Pkj
    {
        static void Main(string[] args)
        {
            Console.Title="< N-State Simulator >";
            Console.WriteLine("\t\tn-State Machine Simulator");
            
            
            //code starts here
            int t_symbols, t_states, e_states,c_state;
            c_state = 1;
            Console.Write("\nEnter Total Number of States for the matrix: ");
            t_states=Convert.ToInt32(Console.ReadLine());
            Console.Write("\nEnter Total Number of Symbols: ");
            t_symbols =Convert.ToInt32(Console.ReadLine());
            Console.Write("\n{0}x{1} Matrix",t_states,t_symbols);
            e_states = t_states;

            String[,] transition_table = new String[(t_states + 1),(t_symbols + 1)];
            String [] symbol_arr = new String[t_symbols];
            for (int i = 0; i < transition_table.GetLength(0); i++)
            {
                for (int j = 0; j < transition_table.GetLength(1); j++)
                {
                    transition_table[i,j]="x";
                }
            }
            transition_table[0,0]="#";
            for (int ind = 1; ind <= t_symbols; ind++)
            {
                Console.Write("\nEnter Symbol {0}: ",ind);
                symbol_arr[ind-1]=Console.ReadLine();
                transition_table[0,ind]=symbol_arr[ind-1];
            }//endfor
            for (int ind = 1; ind <= t_states; ind++)
            {
                transition_table[ind, 0] = ind.ToString();
            }
            for (int row = 1; row < (transition_table.GetLength(0)-1); row++)
            {
                for (int col = 1; col < transition_table.GetLength(1); col++)
                {
                    Console.Write("\nEnter Rule for State {0} & Symbol {1}: ",transition_table[row,0],transition_table[0,col]);
                    transition_table[row, col] = Console.ReadLine();
                }
            }

            
            Console.Clear();
            Console.WriteLine("\n\t<| Shape of Machine Formed |>\n");
            for (int i = 0; i < transition_table.GetLength(0); i++)
            {
                for (int j = 0; j < transition_table.GetLength(1); j++)
                {
                    Console.Write("\t"+transition_table[i,j]);
                }
                Console.WriteLine("\n");
            }
            String input_string = "";
            
            Console.Write("\n\tEnter String to be tested: ");
            input_string = Console.ReadLine();
            
            
            char[] input_ch = new char[input_string.Length];
            input_ch = input_string.ToCharArray();
            String [] input_arr = new String[input_ch.Length];
            for (int i = 0; i < input_ch.Length; i++)
            {
                input_arr[i] = input_ch[i].ToString();
            }
            
                foreach (String str in input_arr)
                {
                    int symbol_ind = chSearch(str, symbol_arr);
                    symbol_ind++;
                    c_state = chTraverse(symbol_ind, transition_table, c_state);
                    if (c_state == e_states)
                    {
                        break;
                    }
                }
              if (c_state == e_states)
                  Console.WriteLine("\n\t Successfully terminated! YESSSSSSSSSSSS");
              else
                  Console.WriteLine("\n\tString Not Valid dodo!");
                Console.WriteLine("\n\n\n\t Press Any Key To Exit this stupid program created by wajiha and ahmad ");
                Console.ReadKey();
        }

        public static int chSearch(String str, String[] arr)
        {
            int ind=0;
            for (int n=0; n < arr.GetLength(0); n++,ind++)
            {
                if (str.CompareTo(arr[n]) == 0)
                {
                    break;
                }
            }
            return (ind);
        }

        public static int chTraverse(int ind, String[,] transition_table,int curr_state) 
        {
            int value = Convert.ToInt32(transition_table[curr_state,ind]);
            return value;
        }

    }
}