#ifndef MK_LEXER_H
#define MK_LEXER_H

#include "token.h"
#include "commons.h"
#include "status.h"
#include "str.h"

struct lex_context
{
    size_t cursor;
    int line;
};

struct lexer
{
    struct status* status;
    char* source;
    size_t len;
    struct lex_context context;
    struct str separators;
};

void lexer_init(struct lexer* self,
                char const* source,
                struct status* status);

void lexer_free(struct lexer* self);

struct token* lexer_try_new_next(struct lexer* self);
void lexer_skip_spaces(struct lexer* self);

struct token* lexer_try_new_int(struct lexer* self);
struct token* lexer_try_new_float(struct lexer* self);
struct token* lexer_try_new_string(struct lexer* self);
struct token* lexer_try_new_symbol(struct lexer* self);

bool lexer_is_sep(struct lexer* self, size_t index);
struct token* lexer_try_new_text(struct lexer* self,
                                 TokenKind kind,
                                 char const* text);
struct token* lexer_try_new_keyword(struct lexer* self,
                                    TokenKind kind,
                                    char const* keyword,
                                    char const* value);

struct lex_context lexer_state(struct lexer* self);
void lexer_restore(struct lexer* self,
                   struct lex_context context);

bool lexer_next_is(struct lexer* self,
                   TokenKind kind,
                   int lookahead);

bool lexer_end(struct lexer* self);
#endif