#pragma once

#include "const.h"

typedef enum scanner_Sym {
	S_undef,
	S_eof,
	S_DIV,
	S_INT,
	S_VOID,
	S_RETURN,
	S_IDENT,
	S_INT_CONST,
	S_SEMICOLON,
	S_LPARENT,
	S_RPARENT,
	S_LCURL,
	S_RCURL
} scanner_Sym;

typedef struct scanner_Symbol {
	scanner_Sym sym;
	union {
		char s[MAX_IDENT_LEN];
		int i;
	} data;
	int tag;
} scanner_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 );
scanner_Symbol scanner_scan( Scanner *s );
void scanner_debug( Scanner *s, int enable );