#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 */