/*
- global-translator.cc -- implement global_context
+ global-context.cc -- implement Global_context
source file of the GNU LilyPond music typesetter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <stdio.h>
-#include "warn.hh"
-#include "music.hh"
-#include "event.hh"
-#include "music-list.hh"
-#include "music-iterator.hh"
#include "global-context.hh"
-#include "score-context.hh"
+
+#include <cstdio>
+using namespace std;
+
#include "context-def.hh"
-#include "music-output-def.hh"
+#include "dispatcher.hh"
+#include "international.hh"
+#include "music-iterator.hh"
+#include "music.hh"
+#include "output-def.hh"
+#include "warn.hh"
-Global_context::Global_context (Music_output_def*o)
+Global_context::Global_context (Output_def *o)
+ : Context ()
{
output_def_ = o;
- definition_ = o->find_context_def (ly_symbol2scm ("Global"));
- unsmob_context_def (definition_)->apply_default_property_operations (this);
+ definition_ = find_context_def (o, ly_symbol2scm ("Global"));
+
+ now_mom_.set_infinite (-1);
+ prev_mom_.set_infinite (-1);
+
+ /* We only need the most basic stuff to bootstrap the context tree */
+ event_source ()->add_listener (GET_LISTENER (create_context_from_event),
+ ly_symbol2scm ("CreateContext"));
+ event_source ()->add_listener (GET_LISTENER (prepare),
+ ly_symbol2scm ("Prepare"));
+ events_below ()->register_as_listener (event_source_);
+
+ Context_def *globaldef = unsmob_context_def (definition_);
+ if (!globaldef)
+ programming_error ("no `Global' context found");
+ else
+ globaldef->apply_default_property_operations (this);
accepts_list_ = scm_list_1 (ly_symbol2scm ("Score"));
}
-Music_output_def*
+Output_def *
Global_context::get_output_def () const
{
return output_def_;
void
Global_context::add_moment_to_process (Moment m)
{
- if (m > final_mom_)
- return;
-
if (m < now_mom_)
- programming_error ("Trying to freeze in time.");
-
- for (int i=0; i < extra_mom_pq_.size (); i++)
+ programming_error ("trying to freeze in time");
+
+ for (vsize i = 0; i < extra_mom_pq_.size (); i++)
if (extra_mom_pq_[i] == m)
return;
extra_mom_pq_.insert (m);
return extra_mom_pq_.size ();
}
+IMPLEMENT_LISTENER (Global_context, prepare);
void
-Global_context::prepare (Moment m)
+Global_context::prepare (SCM sev)
{
- prev_mom_ = now_mom_;
- now_mom_ = m;
+ Stream_event *ev = unsmob_stream_event (sev);
+ Moment *mom = unsmob_moment (ev->get_property ("moment"));
- if (get_score_context ())
- get_score_context ()->prepare (m);
+ assert (mom);
+
+ if (prev_mom_.main_part_.is_infinity () && prev_mom_ < 0)
+ prev_mom_ = *mom;
+ else
+ prev_mom_ = now_mom_;
+ now_mom_ = *mom;
}
Moment
return now_mom_;
}
-Score_context*
+Context *
Global_context::get_score_context () const
{
- return (gh_pair_p (context_list_))
- ? dynamic_cast<Score_context*> (unsmob_context (gh_car (context_list_)))
+ return (scm_is_pair (context_list_))
+ ? unsmob_context (scm_car (context_list_))
: 0;
}
-Music_output*
+SCM
Global_context::get_output ()
{
- return get_score_context ()->get_output ();
+ Context * c = get_score_context ();
+ if (c)
+ return c->get_property ("output");
+ else
+ return SCM_EOL;
}
void
-Global_context::one_time_step ()
+Global_context::run_iterator_on_me (Music_iterator *iter)
{
- get_score_context ()->one_time_step ();
- apply_finalizations ();
- check_removal ();
-}
-
-void
-Global_context::finish ()
-{
- if (get_score_context ())
- get_score_context ()->finish ();
-}
-
-void
-Global_context::run_iterator_on_me (Music_iterator * iter)
-{
- if (iter-> ok ())
- prev_mom_ = now_mom_ = iter->pending_moment ();
+ prev_mom_.set_infinite (-1);
+ now_mom_.set_infinite (-1);
+ Moment final_mom = iter->get_music ()->get_length ();
bool first = true;
while (iter->ok () || get_moments_left ())
Moment w;
w.set_infinite (1);
if (iter->ok ())
+ w = iter->pending_moment ();
+
+ w = sneaky_insert_extra_moment (w);
+ if (w.main_part_.is_infinity () || w > final_mom)
+ break;
+
+ if (w == prev_mom_)
{
- w = iter->pending_moment ();
+ programming_error ("Moment is not increasing. Aborting interpretation.");
+ break ;
}
- w = sneaky_insert_extra_moment (w);
- if (w.main_part_.is_infinity ())
- break ;
-#if 0
- // printf ("proccing %s\n ", w.to_string ().to_str0 ());
if (first)
{
/*
- Huh?
- */
+ Need this to get grace notes at start of a piece correct.
+ */
+ first = false;
set_property ("measurePosition", w.smobbed_copy ());
}
-#endif
-
- prepare (w);
+
+ send_stream_event (this, "Prepare", 0,
+ ly_symbol2scm ("moment"), w.smobbed_copy ());
if (iter->ok ())
iter->process (w);
- if (!get_score_context ())
- {
- SCM key = ly_symbol2scm ("Score");
- Context_def * t = unsmob_context_def (get_output_def ()
- ->find_context_def (key));
- if (!t)
- error (_f ("can't find `%s' context", "Score"));
-
- Context *c = t->instantiate (SCM_EOL);
- add_context (c);
-
- Score_context *sc = dynamic_cast<Score_context*> (c);
- sc->prepare (w);
- }
-
- one_time_step ();
- first = false;
+ send_stream_event (this, "OneTimeStep", 0, 0);
+ apply_finalizations ();
+ check_removal ();
}
}
Global_context::apply_finalizations ()
{
SCM lst = get_property ("finalizations");
- set_property ("finalizations" , SCM_EOL);
- for (SCM s = lst ; gh_pair_p (s); s = gh_cdr (s))
- {
- scm_primitive_eval (gh_car (s));
- }
+ set_property ("finalizations", SCM_EOL);
+ for (SCM s = lst; scm_is_pair (s); s = scm_cdr (s))
+
+ /* TODO: make safe. */
+ scm_primitive_eval (scm_car (s));
}
-/*
- Add a function to execute before stepping to the next time step.
- */
+/* Add a function to execute before stepping to the next time step. */
void
Global_context::add_finalization (SCM x)
{
SCM lst = get_property ("finalizations");
lst = scm_cons (x, lst);
- set_property ("finalizations" ,lst);
+ set_property ("finalizations", lst);
+}
+
+Moment
+Global_context::previous_moment () const
+{
+ return prev_mom_;
}
+Context *
+Global_context::get_default_interpreter ()
+{
+ if (get_score_context ())
+ return get_score_context ()->get_default_interpreter ();
+ else
+ return Context::get_default_interpreter ();
+}
+
+Global_context *
+unsmob_global_context (SCM x)
+{
+ return dynamic_cast<Global_context *> (unsmob_context (x));
+}
projects / lilypond.git / blobdiff