#ifndef LEXER_H
#define LEXER_H

#include "libft.h"
#include "errors.h"
#include <stdbool.h>

typedef enum
{
    TOKEN_VARIABLE,      // x, y, etc.
    TOKEN_NUMBER_INT,    // int
    TOKEN_NUMBER_DOUBLE, // double
    TOKEN_POWER,         // ^ or **
    TOKEN_SIGN,          // + or -
    TOKEN_FACTOR,        // * or /
    TOKEN_EQUAL,         // =
    TOKEN_END            // null (end of input)
} token_type;

typedef struct
{
    token_type type;
    union
    {
        char value_char;
        int value_int;
        double value_double;
    };
} token;

int lexerize(const char *input, token *tokens);

#endif