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#ifndef LEXER_H
#define LEXER_H
#include <vector>
#include <string>
#include <utility>
#include <cctype>
#include <iostream>
#include "Token.h"

using namespace std;

class Lexer
{
    public:
        Lexer();
        virtual ~Lexer();

    void add_keyword(string word);
    void add_punctuation_char(char c);
    void add_operator(string oper);
    string unescape_string(string text);

    vector<Token> parse_line(string line);
    pair<string, Token> parse_token(string line);
    type_of_token guess_type(string value);

    bool is_keyword(string value);
    bool is_punctuation(char c);
    bool is_operator(string value );

    protected:
    private:

    vector<string> keywords;
    vector<char> punctuation;
    vector<string> operators;
};

#endif // LEXER_H