/*
- 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--2015 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"
#include "warn.hh"
#include "translator.icc"
-#include "ly-smobs.icc"
Translator::~Translator ()
{
}
-void
-Translator::init ()
-{
- must_be_last_ = false;
- self_scm_ = SCM_EOL;
- daddy_context_ = 0;
- smobify_self ();
-}
-
void
Translator::process_music ()
{
{
}
-Translator::Translator ()
+Translator::Translator (Context *c)
+ : daddy_context_ (c)
{
- init ();
-}
-
-Translator::Translator (Translator const &src)
-{
- init ();
- must_be_last_ = src.must_be_last_;
+ smobify_self ();
}
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 (SCM r = get_listener_list (); scm_is_pair (r); r = scm_cdr (r))
+ {
+ SCM event_class = scm_caar (r);
+ SCM callback = scm_cdar (r);
-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_);
+ c->events_below ()->add_listener (get_listener (callback),
+ 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));
-}
-
-
-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?")
+Translator::disconnect_from_context (Context *c)
{
- ensure_listened_hash ();
- return scm_hashq_ref (listened_event_class_table, sym, SCM_BOOL_F);
-}
+ for (SCM r = get_listener_list (); scm_is_pair (r); r = scm_cdr (r))
+ {
+ SCM event_class = scm_caar (r);
+ SCM callback = scm_cdar (r);
-void
-add_listened_event_class (SCM sym)
-{
- ensure_listened_hash ();
- scm_hashq_set_x (listened_event_class_table, sym, SCM_BOOL_T);
+ c->events_below ()->remove_listener (get_listener (callback),
+ event_class);
+ }
}
-
-/*
- internally called once, statically, for each translator
- listener. Connects the name of an event class with a procedure that
- fetches the corresponding listener.
-
- The method should only be called from the macro
- IMPLEMENT_TRANSLATOR_LISTENER.
- */
-void
-Translator::add_translator_listener (translator_listener_record **listener_list,
- translator_listener_record *r,
- Listener (*get_listener) (void *),
- const char *ev_class)
+SCM
+Translator::event_class_symbol (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 = replace_all (&name, '_', '-');
name += "-event";
-
- 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;
+
+ return scm_from_ascii_symbol (name.c_str ());
}
/*
*/
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,
+ SCM listener_list,
+ const char *read,
+ const char *write)
{
- 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_utf8_string (desc), static_properties);
+
SCM list = SCM_EOL;
- for (; listener_list; listener_list = listener_list->next_)
- list = scm_cons (listener_list->event_class_, list);
+ for (; scm_is_pair (listener_list); listener_list = scm_cdr (listener_list))
+ list = scm_cons (scm_caar (listener_list), 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
*/
SCM
-Translator::mark_smob (SCM sm)
+Translator::mark_smob () const
{
- Translator *me = (Translator *) SCM_CELL_WORD_1 (sm);
- me->derived_mark ();
+ derived_mark ();
return SCM_EOL;
}
return daddy_context_->get_score_context ();
}
-IMPLEMENT_SMOBS (Translator);
-IMPLEMENT_DEFAULT_EQUAL_P (Translator);
-IMPLEMENT_TYPE_P (Translator, "ly:translator?");
+const char * const Translator::type_p_name_ = "ly:translator?";
bool
Translator::must_be_last () const
{
- return must_be_last_;
+ return false;
}
void
}
int
-Translator::print_smob (SCM s, SCM port, scm_print_state *)
+Translator::print_smob (SCM port, scm_print_state *) const
{
- Translator *me = (Translator *) SCM_CELL_WORD_1 (s);
scm_puts ("#<Translator ", port);
- scm_puts (me->class_name (), port);
+ scm_puts (class_name (), port);
scm_puts (" >", port);
return 1;
}
void
-add_acknowledger (Engraver_void_function_engraver_grob_info ptr,
- char const *func_name,
- vector<Acknowledge_information> *ack_array)
+add_acknowledger (SCM ptr,
+ char const *func_name,
+ SCM &ack_hash)
{
- Acknowledge_information inf;
- inf.function_ = ptr;
+ if (SCM_UNBNDP (ack_hash))
+ ack_hash = Scheme_hash_table::make_smob ();
string interface_name (func_name);
- interface_name = replace_all (interface_name, '_', '-');
+ interface_name = replace_all (&interface_name, '_', '-');
interface_name += "-interface";
- /*
- this is only called during program init, so safe to use scm_gc_protect_object ()
- */
- inf.symbol_ = scm_gc_protect_object (ly_symbol2scm (interface_name.c_str ()));
- ack_array->push_back (inf);
+ unsmob<Scheme_hash_table> (ack_hash)
+ ->set (ly_symbol2scm (interface_name.c_str ()), ptr);
}
-Engraver_void_function_engraver_grob_info
-generic_get_acknowledger (SCM sym, vector<Acknowledge_information> const *ack_array)
+SCM
+generic_get_acknowledger (SCM sym, SCM ack_hash)
{
- for (vsize i = 0; i < ack_array->size (); i++)
- {
- if (ack_array->at (i).symbol_ == sym)
- return ack_array->at (i).function_;
- }
- return 0;
-}
+ if (SCM_UNBNDP (ack_hash))
+ return SCM_UNDEFINED;
+ return unsmob<Scheme_hash_table> (ack_hash)->get (sym);
+}
Moment
get_event_length (Stream_event *e)
{
- Moment *m = unsmob_moment (e->get_property ("length"));
+ Moment *m = unsmob<Moment> (e->get_property ("length"));
if (m)
return *m;
else
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));
/* "listen_foo_bar" -> "foo-bar" */
ev_class.erase (0, strlen (prefix));
- replace_all (ev_class, '_', '-');
+ replace_all (&ev_class, '_', '-');
new_ev->origin ()->warning (_f ("Two simultaneous %s events, junking this one", ev_class.c_str ()));
(*old_ev)->origin ()->warning (_f ("Previous %s event here", ev_class.c_str ()));
}
}
-ADD_TRANSLATOR (Translator,
- "Base class. Not instantiated.",
- "",
- "",
- "");
+// Base class. Not instantiated. No ADD_TRANSLATOR call.
projects / lilypond.git / blobdiff