#pragma once

typedef enum Sym {
	S_undef,
	S_number,
	S_ident,
	S_token,
	S_newline,
	S_label,
	S_comment,
	S_eof
} Sym;

typedef struct Symbol {
	Sym sym;
	union {
		char s[MAX_IDENT_LEN];
		int n;
	} data;
	int tag;
} Symbol;

typedef struct Scanner {
	int peek;
	int row;
	int col;
	char *src;
	char *pos;
	int debug;
} Scanner;

void scanner_init( Scanner *s, char *src );
void scanner_reset( Scanner *s );
void scanner_done( Scanner *s );
Symbol scanner_scan( Scanner *s );
void scanner_debug( Scanner *s, int enable );
void scanner_skip_line( Scanner *s );