import java util regex Matcher import java util regex Pattern import j

import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.io.*;
import java.util.ArrayList;

class Reader {
    private File openedFile_;
    private BufferedReader reader_;
    private ArrayList<String> readedText_;

    public Reader(String path) {
        openedFile_ = new File(path);
        try {
            reader_ = new BufferedReader(new InputStreamReader(new FileInputStream(openedFile_), "UTF-8"));
        } catch (UnsupportedEncodingException exc) {
            System.out.println(" UTF-8 exception. " + exc.getMessage());
        } catch (FileNotFoundException exc) {
            System.out.println("File Not Found. " + exc.getMessage());
        }
        readedText_ = new ArrayList<String>();
    }

    public ArrayList<String> Read() {
        String currentString;
        try {
            while((currentString = reader_.readLine()) != null) {
                readedText_.add(currentString);
            }
        } catch (IOException exc) {
            System.out.println("IOException while reading file. " + exc.getMessage());
        }
        return new ArrayList<String>(readedText_);
    }
}
public class LexParse
{
    public static void main(String args[])
    {

        String stringg = "[']([A-Za-z]|[']{2})+[']";
        String number = "[0-9]+|([0-1]+[b]{1})";
		String identifier = "((\\?|\\*|\\|)+[0-9]*)+"
		String space = "^\n|^\r|^\n\r|^\u0085|^\u2028|^\u2029";
        String w = "[ \t]+";
        String pattern = "(^" + w + ")|(" + space + ")|(^"+identifier+")|(^"+number+")|("+stringg+")";

        Pattern p = Pattern.compile(pattern);

        Reader program = new Reader ("C:\Users\Denis");
        ArrayList<String> lines = program.Read();

        boolean err = false;
        int l_num = 1;
        for(String line : lines) {
            int pos = 1;
            Matcher m;

            while(line.length() != 0){
                m = p.matcher(line);
                if (m.find()){
                    err = false;
                    line = line.substring(m.end());
                    if (m.group(3) != null){
                        System.out.println("identifier ("+ l_num + "," + pos + ") " + m.group(3));
                    } else if (m.group(4) != null){
                        System.out.println("number ("+ l_num + "," + pos + ") " + m.group(4));
                    } else if (m.group(5) != null){
                        System.out.println("stringg ("+ l_num + "," + pos + ") " + m.group(5));
                    }
                    pos += m.end();
                } else {
                    if (!err){
                        System.out.println("error" + "(" +l_num + "," + pos + ")");
                        err = true;
                    }
                    line = line.substring(1);
                    pos++;
                    continue;
                }
            }
            l_num++;
        }
    }
}