/*
- translator-group.cc -- implement Translator_group
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
-
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>,
+ Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>,
Erik Sandberg <mandolaerik@gmail.com>
+
+ 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-group.hh"
#include "context-def.hh"
#include "context.hh"
#include "dispatcher.hh"
+#include "engraver.hh"
#include "engraver-group.hh"
#include "international.hh"
#include "main.hh"
#include "music.hh"
#include "output-def.hh"
+#include "performer.hh"
#include "performer-group.hh"
+#include "scheme-engraver.hh"
#include "scm-hash.hh"
#include "warn.hh"
-
void
translator_each (SCM list, Translator_method method)
{
for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
- (unsmob_translator (scm_car (p))->*method) ();
+ (Translator::unsmob (scm_car (p))->*method) ();
}
void
if (context_)
{
programming_error ("translator group is already connected to context "
- + context_->context_name ());
+ + context_->context_name ());
}
-
+
context_ = c;
c->event_source ()->add_listener (GET_LISTENER (create_child_translator),
- ly_symbol2scm ("AnnounceNewContext"));
+ ly_symbol2scm ("AnnounceNewContext"));
for (SCM tr_list = simple_trans_list_; scm_is_pair (tr_list); tr_list = scm_cdr (tr_list))
{
- Translator *tr = unsmob_translator (scm_car (tr_list));
+ Translator *tr = Translator::unsmob (scm_car (tr_list));
tr->connect_to_context (c);
}
}
{
for (SCM tr_list = simple_trans_list_; scm_is_pair (tr_list); tr_list = scm_cdr (tr_list))
{
- Translator *tr = unsmob_translator (scm_car (tr_list));
+ Translator *tr = Translator::unsmob (scm_car (tr_list));
tr->disconnect_from_context (context_);
}
context_->event_source ()->remove_listener (GET_LISTENER (create_child_translator),
- ly_symbol2scm ("AnnounceNewContext"));
+ ly_symbol2scm ("AnnounceNewContext"));
context_ = 0;
protected_events_ = SCM_EOL;
}
{
}
+/*
+ Both filter_performers and filter_engravers used to use a direct dynamic_cast
+ on the unsmobbed translator to be filtered, i.e.,
+
+ if (dynamic_cast<Performer *> (Translator::unsmob (scm_car (*tail))))
+
+ but this caused mysterious optimisation issues in several GUB builds. See
+ issue #818 for the background to this change.
+*/
SCM
filter_performers (SCM ell)
{
SCM *tail = ℓ
for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p))
{
- if (dynamic_cast<Performer *> (unsmob_translator (scm_car (*tail))))
- *tail = scm_cdr (*tail);
+ if (unsmob_performer (scm_car (*tail)))
+ *tail = scm_cdr (*tail);
else
- tail = SCM_CDRLOC (*tail);
+ tail = SCM_CDRLOC (*tail);
}
return ell;
}
SCM *tail = ℓ
for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p))
{
- if (dynamic_cast<Engraver *> (unsmob_translator (scm_car (*tail))))
- *tail = scm_cdr (*tail);
+ if (unsmob_engraver (scm_car (*tail)))
+ *tail = scm_cdr (*tail);
else
- tail = SCM_CDRLOC (*tail);
+ tail = SCM_CDRLOC (*tail);
}
return ell;
}
-/*
+/*
Protects the parameter from being garbage collected. The object is
protected until the next disconnect_from_context call.
this list. This eliminates the need for derived_mark methods in most
translators; all incoming events are instead protected by the
translator group.
-
+
TODO: Should the list also be flushed at the beginning of each new
moment?
*/
Stream_event *ev = unsmob_stream_event (sev);
// get from AnnounceNewContext
SCM cs = ev->get_property ("context");
- Context *new_context = unsmob_context (cs);
- Context_def *def = unsmob_context_def (new_context->get_definition ());
+ Context *new_context = Context::unsmob (cs);
+ Context_def *def = Context_def::unsmob (new_context->get_definition ());
SCM ops = new_context->get_definition_mods ();
-
+
SCM trans_names = def->get_translator_names (ops);
Translator_group *g = get_translator_group (def->get_translator_group_type ());
for (SCM s = trans_names; scm_is_pair (s); s = scm_cdr (s))
{
- Translator *type = get_translator (scm_car (s));
+ SCM definition = scm_car (s);
+ bool is_scheme = false;
+
+ Translator *type = 0;
+ if (ly_is_symbol (definition))
+ type = get_translator (definition);
+ else if (ly_is_pair (definition))
+ {
+ type = get_translator (ly_symbol2scm ("Scheme_engraver"));
+ is_scheme = true;
+ }
+ else if (ly_is_procedure (definition))
+ {
+ // `definition' is a procedure, which takes the context as
+ // an argument and evaluates to an a-list scheme engraver
+ // definition.
+ definition = scm_call_1 (definition, cs);
+ type = get_translator (ly_symbol2scm ("Scheme_engraver"));
+ is_scheme = true;
+ }
+
if (!type)
- warning (_f ("cannot find: `%s'", ly_symbol2string (scm_car (s)).c_str ()));
+ warning (_f ("cannot find: `%s'", ly_symbol2string (scm_car (s)).c_str ()));
else
- {
- Translator *tr = type->clone ();
- SCM str = tr->self_scm ();
-
- if (tr->must_be_last ())
- {
- SCM cons = scm_cons (str, SCM_EOL);
- if (scm_is_pair (trans_list))
- scm_set_cdr_x (scm_last_pair (trans_list), cons);
- else
- trans_list = cons;
- }
- else
- trans_list = scm_cons (str, trans_list);
-
- tr->daddy_context_ = new_context;
- tr->unprotect ();
- }
+ {
+ Translator *instance = type->clone ();
+ if (is_scheme)
+ dynamic_cast<Scheme_engraver *> (instance)->init_from_scheme (definition);
+
+ SCM str = instance->self_scm ();
+
+ if (instance->must_be_last ())
+ {
+ SCM cons = scm_cons (str, SCM_EOL);
+ if (scm_is_pair (trans_list))
+ scm_set_cdr_x (scm_last_pair (trans_list), cons);
+ else
+ trans_list = cons;
+ }
+ else
+ trans_list = scm_cons (str, trans_list);
+
+ instance->daddy_context_ = new_context;
+ instance->unprotect ();
+ }
}
/* Filter unwanted translator types. Required to make
- \with {\consists "..."} work. */
+ \with { \consists "..." } work. */
if (dynamic_cast<Engraver_group *> (g))
g->simple_trans_list_ = filter_performers (trans_list);
else if (dynamic_cast<Performer_group *> (g))
g->unprotect ();
recurse_over_translators (new_context,
- &Translator::initialize,
- &Translator_group::initialize,
- DOWN);
+ &Translator::initialize,
+ &Translator_group::initialize,
+ DOWN);
}
SCM
for (SCM s = c->children_contexts (); scm_is_pair (s);
s = scm_cdr (s))
- precomputed_recurse_over_translators (unsmob_context (scm_car (s)), idx, dir);
+ precomputed_recurse_over_translators (Context::unsmob (scm_car (s)), idx, dir);
if (tg && dir == UP)
{
void
recurse_over_translators (Context *c, Translator_method ptr,
- Translator_group_method tg_ptr, Direction dir)
+ Translator_group_method tg_ptr, Direction dir)
{
Translator_group *tg
= dynamic_cast<Translator_group *> (c->implementation ());
for (SCM s = c->children_contexts (); scm_is_pair (s);
s = scm_cdr (s))
- recurse_over_translators (unsmob_context (scm_car (s)), ptr, tg_ptr, dir);
+ recurse_over_translators (Context::unsmob (scm_car (s)), ptr, tg_ptr, dir);
if (tg && dir == UP)
{
translator_each (tg->get_simple_trans_list (),
- ptr);
+ ptr);
(tg->*tg_ptr) ();
}
{
for (SCM s = simple_trans_list_; scm_is_pair (s); s = scm_cdr (s))
{
- Translator *tr = unsmob_translator (scm_car (s));
+ Translator *tr = Translator::unsmob (scm_car (s));
Translator_void_method_ptr ptrs[TRANSLATOR_METHOD_PRECOMPUTE_COUNT];
tr->fetch_precomputable_methods (ptrs);
assert (tr);
for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++)
- {
- if (ptrs[i])
- precomputed_method_bindings_[i].push_back (Translator_method_binding (tr, ptrs[i]));
- }
+ {
+ if (ptrs[i])
+ precomputed_method_bindings_[i].push_back (Translator_method_binding (tr, ptrs[i]));
+ }
}
fetch_precomputable_methods (precomputed_self_method_bindings_);
projects / lilypond.git / blobdiff