lexer.hpp

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#ifndef __LEXER_HPP__
#define __LEXER_HPP__
 
#include "token.hpp"
 
#include <fstream>
#include <string>
#include <array>
#include <locale>
 
const array<string, 11> KEYWORDS = {
    "set",
    "print",
    "add",
    "sub",
    "mul",
    "div",
    "mod",
    "equals",
    "greater",
    "less",
    "define",
};
 
using namespace std;
 
class Lexer {
    public:
        Lexer(const char* filename);
 
        Lexer(const string& filename);
 
        ~Lexer();
 
        Token next_token();
 
    private:
        static locale loc;
        ifstream source;
        string filename;
        string line_buff;
        size_t line, column;
 
        char skip_blanks();
 
        char pop_char();
 
        bool is_import_line();
 
        Type get_type(const string& identifier);
};
 
#endif // __LEXER_HPP__