/* err.h
 * Copyright (c) 2011, Peter Ohler
 * All rights reserved.
 */

#ifndef OX_ERR_H
#define OX_ERR_H

#include "ruby.h"

#define set_error(err, msg, xml, current) _ox_err_set_with_location(err, msg, xml, current, __FILE__, __LINE__)

typedef struct _err {
    VALUE clas;
    char  msg[128];
} *Err;

extern VALUE ox_arg_error_class;
extern VALUE ox_parse_error_class;
extern VALUE ox_syntax_error_class;

extern void ox_err_set(Err e, VALUE clas, const char *format, ...);
extern void
_ox_err_set_with_location(Err err, const char *msg, const char *xml, const char *current, const char *file, int line);
extern void ox_err_raise(Err e);

inline static void err_init(Err e) {
    e->clas = Qnil;
    *e->msg = '\0';
}

inline static int err_has(Err e) {
    return (Qnil != e->clas);
}

#endif /* OX_ERR_H */