add_listened_event_class (SCM sym)
{
ensure_listened_hash ();
-
scm_hashq_set_x (listened_event_class_table, sym, SCM_BOOL_T);
}
SCM class_sym = scm_str2symbol (name.c_str ());
add_listened_event_class (class_sym);
+
r->event_class_ = class_sym;
r->get_listener_ = get_listener;
r->next_ = *listener_list;
*listener_list = r;
}
+/*
+ Helps the individual static_translator_description methods of translators.
+*/
+SCM
+Translator::static_translator_description (const char *grobs,
+ const char *desc,
+ translator_listener_record *listener_list,
+ const char *read,
+ const char *write) const
+{
+ SCM static_properties = SCM_EOL;
+
+ static_properties = scm_acons (ly_symbol2scm ("grobs-created"),
+ parse_symbol_list (grobs), static_properties);
+
+ static_properties = scm_acons (ly_symbol2scm ("description"),
+ scm_makfrom0str (desc), static_properties);
+
+ SCM list = SCM_EOL;
+ for (; listener_list; listener_list = listener_list->next_)
+ list = scm_cons (listener_list->event_class_, list);
+ static_properties = scm_acons (ly_symbol2scm ("events-accepted"),
+ list, static_properties);
+
+ static_properties = scm_acons (ly_symbol2scm ("properties-read"),
+ parse_symbol_list (read), static_properties);
+
+ static_properties = scm_acons (ly_symbol2scm ("properties-written"),
+ parse_symbol_list (write), static_properties);
+
+ return static_properties;
+}
+
/*
SMOBS
*/
bool
internal_event_assignment (Stream_event **old_ev, Stream_event *new_ev, const char *function)
{
- if (*old_ev)
+ if (*old_ev &&
+ !to_boolean (scm_equal_p ((*old_ev)->self_scm (),
+ new_ev->self_scm ())))
{
/* extract event class from function name */
- const char *prefix = "listen_";
string ev_class = function;
+
/* This assertion fails if EVENT_ASSIGNMENT was called outside a
translator listener. Don't do that. */
+ const char *prefix = "listen_";
assert (0 == ev_class.find (prefix));
/* "listen_foo_bar" -> "foo-bar" */
}
ADD_TRANSLATOR (Translator,
- "Base class. Unused",
- "",
+ "Base class. Not instantiated.",
"",
"",
"");