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#ifndef LEX_H
#define LEX_H
#include <stddef.h>
// Only to be used with compile-time known tokens.
#define TOKEN(tt, me) (struct token){.type=tt,.lexeme=me,.length=sizeof(me) - 1}
#define TOKEN_INVALID 1
#define TOKEN_EOP 2
#define TOKEN_NUMBER 3
#define TOKEN_HEX 4
#define TOKEN_BINARY 5
#define TOKEN_SEMICOLON 6
#define TOKEN_NEWLINE 7
#define TOKEN_FUNCTION 8
#define TOKEN_G8 9
#define TOKEN_G16 10
#define TOKEN_G32 11
#define TOKEN_G64 12
#define TOKEN_IDENTIFIER 13
#define TOKEN_PACK 14
#define TOKEN_BRACES_OPEN 15
#define TOKEN_BRACES_CLOSE 16
#define TOKEN_PARAN_OPEN 17
#define TOKEN_PARAN_CLOSE 18
#define TOKEN_RETURN 19
#define TOKEN_EQUALSIGN 20
#define TOKEN_PLUS 21
#define TOKEN_MINUS 22
#define TOKEN_STAR 23
#define TOKEN_SLASH 24
#define TOKEN_BANG 25
const char* lex_get_token_name(int id);
#define LEX_NUMBER_ERR 0
#define LEX_HEX_ERR 1
#define LEX_BINARY_ERR 2
struct token {
int type;
size_t line;
size_t length;
char *lexeme;
};
struct lex {
size_t pos;
size_t size;
char* buffer;
const char* filepath;
size_t line;
size_t linepos;
};
char lex_advance(struct lex *l, size_t o);
char lex_seek(struct lex *l, size_t o);
void lex_error(struct lex *l, int err_code, const char *s, ...);
struct token lex_number(struct lex *l);
struct token lex_directive(struct lex *l);
struct token lex_link_unit(struct lex *l);
struct token lex_next(struct lex *l);
#endif
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