#ifndef COUNTERS_H
#define COUNTERS_H

#include <glib.h>

#define COUNTERS_ERROR counters_error_quark()

typedef enum
{
    COUNTERS_ERROR_FAILED,                 /* Generic failure */
} CountersError;

/* Special counters live in the private use area */
enum {
    COUNTER_ILLUSTRATION=0xE000,
    NO_SPECIAL_COUNTERS
};

typedef enum {
    OPENING_QUOTE,
    CLOSING_QUOTE,
    NEUTRAL_QUOTE,
    INVALID_QUOTE
} QuoteClass;

#define QUOTE_CLASS(c) \
    (((c)==CHAR_RD_QUOTE || (c)==CHAR_RS_QUOTE)?CLOSING_QUOTE: \
     ((c)==CHAR_LD_QUOTE || (c)==CHAR_LS_QUOTE || (c)==CHAR_OPEN_SQUOTE)?\
     OPENING_QUOTE:((c)==CHAR_DQUOTE || (c)==CHAR_SQUOTE)?NEUTRAL_QUOTE:\
     INVALID_QUOTE)

struct counters {
    GTree *matching;
    int c_unders;
    GSList *open_quotes;
};

GQuark counters_error_quark(void);
gboolean innermost_quote_matches(struct counters *counters,gunichar ch);
gboolean count_quote(struct counters *counters,gunichar ch,QuoteClass klass,
  GError **err);
void increment_matching(struct counters *counters,gunichar ch,gboolean open);
int matching_count(const struct counters *counters,gunichar ch,gboolean open);
int matching_difference(const struct counters *counters,gunichar ch);
void counters_reset(struct counters *counters);
void counters_destroy(struct counters *counters);

#endif /* COUNTERS_H */