#ifndef TOKEN_H
#define TOKEN_H

#include <ostream>
#include <string>
#include <sstream>

using namespace std;

struct Token {

    enum Type {
        INT,
        STRING,
        VARNAME,
        FUNCTION,
        OPERATOR
    };

    const Type type;
    const int int_val;
    const string str_val;

    Token(const Type t, const string &s);
    Token(const Type t, const int i);
    Token(const Token * const tok);
    ~Token(void);

    // convert the token to a string
    string &appendToString(string &str) const;
};

ostream &operator<<(ostream &out, const Token * const token);
ostream &operator<<(ostream &out, const Token &token);
ostream &operator<<(ostream &is, const Token::Type type);

#endif // TOKEN_H