#ifndef SK_LEXER_H
#define SK_LEXER_H

#include "commons.h"
#include "token.h"

struct context
{
    int line;
    size_t cursor;
};

struct lexer
{
    char* source;
    size_t len;
    struct context context;
};

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

bool lexer_is_at_end(struct lexer* self);
void lexer_skip_spaces(struct lexer* self);
void lexer_skip_comments(struct lexer* self);
bool lexer_is_sep(struct lexer* self, size_t index);

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

void lexer_consume_next(struct lexer* self);
struct token* lexer_try_new_next(struct lexer* self);
struct token* lexer_try_scan_int(struct lexer* self);
struct token* lexer_try_scan_float(struct lexer* self);
struct token* lexer_try_scan_string(struct lexer* self);
struct token* lexer_try_scan_ident(struct lexer* self);
bool lexer_is_ident(struct lexer* self, size_t index);
struct token* lexer_try_scan_text(struct lexer* self,
                                  char const* text,
                                  TokenKind kind);
struct token* lexer_try_scan_keyword(struct lexer* self,
                                    char const* keyword,
                                    TokenKind kind,
                                    char const* value);
#endif