#COMPLR 4 Compiler, Main

import java.util.*;

public class Compiler {
    private SortedMap<Position, Message> messages;
    private HashMap<String, Integer> nameCodes;
    private List<String> names;

    public Compiler() {
        messages = new TreeMap<>();
        nameCodes = new HashMap<>();
        names = new ArrayList<>();
    }

    public int addName(String name) {
        if (nameCodes.containsKey(name)) {
            return nameCodes.get(name);
        } else {
            int code = names.size();
            names.add(name);
            nameCodes.put(name, code);
            return code;
        }
    }

    public void addMessage(boolean isErr, Position c, String text) {
        messages.put(c, new Message(isErr, text));
    }

    public void outPutMessages() {
        System.out.println();
        System.out.println("Messages:");

        for (Map.Entry<Position, Message> entry : messages.entrySet()) {
            System.out.print(entry.getValue().isError ? "Error" : "Warning");
            System.out.print(" " + entry.getKey() + ": ");
            System.out.println(entry.getValue().text);
        }
    }

    public MyScanner getScanner(String program) {
        return new MyScanner(program, this);
    }
}




import java.io.File;
import java.util.Scanner;

public class complab4 {

    //var 2
    public static void main(String args[]) {

        String text = "";
        Scanner sc;

        try {
            sc = new Scanner(new File("in.txt"));
        } catch (java.io.FileNotFoundException e) {
            System.out.println(e.toString());
            return;
        }
        while (sc.hasNextLine())
            text += sc.nextLine() + "\n";

        Compiler compiler = new Compiler();
        MyScanner scanner = new MyScanner(text, compiler);

        System.out.println();
        System.out.println("Tokens:");

        Token t = scanner.nextToken();
        while (null != t) {
            System.out.println(t.toString());
            t = scanner.nextToken();
        }

        scanner.outputComments();

        compiler.outPutMessages();
    }

}