Компиляторы 4 лаба (7) Token (все)

public enum DomainTag {
    IDENT, NUMBER, OPER, END_OF_PROGRAM
}


public class Fragment {
    private Position starting, following;

    public Fragment (Position starting , Position following)
    {
        this.starting = starting;
        this.following = following;
    }


    public String toString()
    {
        return starting + " - " + following;
    }
}

public abstract class Token {
    private DomainTag tag;
    private Fragment coords;

    protected Token(DomainTag tag, Position starting, Position following) {
        this.tag = tag;
        coords = new Fragment(starting, following);
    }

    public DomainTag Tag() { return tag; }
    public Fragment Coords() { return coords; }
}

public class IdentToken extends Token {
    public String Code;

    public IdentToken(String code, Position starting, Position following){
        super(DomainTag.IDENT, starting, following);
        Code = code;
    }
}

public class NumberToken extends Token {
    public long Value;

    public NumberToken(long val, Position starting, Position following){
        super(DomainTag.NUMBER, starting, following);
        Value = val;
    }
}

class SpecToken extends Token {
    public SpecToken(DomainTag tag , Position starting , Position following ){
        super( tag , starting , following );
    }
}

public class OperToken extends Token {
    public String Num;

    public OperToken(String num, Position starting, Position following){
        super(DomainTag.OPER, starting, following);
        Num = num;
    }
}