/*
- translator.cc -- implement Translator
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "translator.hh"
void
Translator::init ()
{
- must_be_last_ = false;
self_scm_ = SCM_EOL;
daddy_context_ = 0;
smobify_self ();
Translator::Translator (Translator const &src)
{
+ (void) src;
init ();
- must_be_last_ = src.must_be_last_;
}
Moment
void
Translator::connect_to_context (Context *c)
{
- for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
- c->events_below ()->add_listener (r->get_listener_ (this), r->event_class_);
+ for (translator_listener_record *r = get_listener_list (); r; r = r->next_)
+ c->events_below ()->add_listener (r->get_listener_ (this, r->event_class_),
+ r->event_class_);
}
void
Translator::disconnect_from_context (Context *c)
{
- for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
- c->events_below ()->remove_listener (r->get_listener_ (this), r->event_class_);
-}
-
-static SCM listened_event_class_table;
-void
-ensure_listened_hash ()
-{
- if (!listened_event_class_table)
- listened_event_class_table = scm_permanent_object (scm_c_make_hash_table (61));
+ for (translator_listener_record *r = get_listener_list (); r; r = r->next_)
+ c->events_below ()->remove_listener (r->get_listener_ (this, r->event_class_),
+ r->event_class_);
}
-
-LY_DEFINE (ly_get_listened_event_classes, "ly:get-listened-event-classes",
- 0, 0, 0, (),
- "Return a list of all event classes that some translator listens"
- " to.")
-{
- ensure_listened_hash ();
- return ly_hash_table_keys (listened_event_class_table);
-}
-
-LY_DEFINE (ly_is_listened_event_class, "ly:is-listened-event-class",
- 1, 0, 0, (SCM sym),
- "Is @var{sym} a listened event class?")
-{
- ensure_listened_hash ();
- return scm_hashq_ref (listened_event_class_table, sym, SCM_BOOL_F);
-}
-
-void
-add_listened_event_class (SCM sym)
-{
- ensure_listened_hash ();
- scm_hashq_set_x (listened_event_class_table, sym, SCM_BOOL_T);
-}
-
-
/*
internally called once, statically, for each translator
listener. Connects the name of an event class with a procedure that
*/
void
Translator::add_translator_listener (translator_listener_record **listener_list,
- translator_listener_record *r,
- Listener (*get_listener) (void *),
- const char *ev_class)
+ translator_listener_record *r,
+ Listener (*get_listener) (void *, SCM),
+ const char *ev_class)
{
/* ev_class is the C++ identifier name. Convert to scm symbol */
string name = string (ev_class);
name = replace_all (&name, '_', '-');
name += "-event";
-
- SCM class_sym = scm_str2symbol (name.c_str ());
-
- add_listened_event_class (class_sym);
+
+ // we make the symbol permanent in order not to have to bother about
+ // the static translator_listener_record chains while garbage
+ // collecting.
+
+ SCM class_sym = scm_permanent_object (scm_from_locale_symbol (name.c_str ()));
r->event_class_ = class_sym;
r->get_listener_ = get_listener;
*/
SCM
Translator::static_translator_description (const char *grobs,
- const char *desc,
- translator_listener_record *listener_list,
- const char *read,
- const char *write) const
+ 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_from_locale_string (desc), static_properties);
-
+ 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_from_locale_string (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;
+ 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
Translator::must_be_last () const
{
- return must_be_last_;
+ return false;
}
void
void
add_acknowledger (Engraver_void_function_engraver_grob_info ptr,
- char const *func_name,
- vector<Acknowledge_information> *ack_array)
+ char const *func_name,
+
vector<Acknowledge_information> *ack_array)
{
Acknowledge_information inf;
inf.function_ = ptr;
for (vsize i = 0; i < ack_array->size (); i++)
{
if (ack_array->at (i).symbol_ == sym)
- return ack_array->at (i).function_;
+ return ack_array->at (i).function_;
}
return 0;
}
-
Moment
get_event_length (Stream_event *e)
{
get_event_length (Stream_event *e, Moment now)
{
Moment len = get_event_length (e);
-
+
if (now.grace_part_)
{
len.grace_part_ = len.main_part_;
bool
internal_event_assignment (Stream_event **old_ev, Stream_event *new_ev, const char *function)
{
- if (*old_ev &&
- !to_boolean (scm_equal_p ((*old_ev)->self_scm (),
- new_ev->self_scm ())))
+ if (*old_ev
+ && !to_boolean (scm_equal_p ((*old_ev)->self_scm (),
+ new_ev->self_scm ())))
{
/* extract event class from function name */
string ev_class = function;
/* This assertion fails if EVENT_ASSIGNMENT was called outside a
- translator listener. Don't do that. */
+ translator listener. Don't do that. */
const char *prefix = "listen_";
assert (0 == ev_class.find (prefix));
}
ADD_TRANSLATOR (Translator,
- /* doc */
- "Base class. Not instantiated.",
+ /* doc */
+ "Base class. Not instantiated.",
- /* create */
- "",
+ /* create */
+ "",
- /* read */
- "",
+ /* read */
+ "",
- /* write */
- ""
- );
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff