/*
- 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 "dispatcher.hh"
+#include "international.hh"
+#include "music-iterator.hh"
+#include "music.hh"
#include "output-def.hh"
-#include "lilypond-key.hh"
+#include "warn.hh"
-Global_context::Global_context (Output_def *o, Moment final)
- : Context (new Lilypond_context_key(0,
- Moment(0),
- "Global", "", 0))
+Global_context::Global_context (Output_def *o)
+ : Context ()
{
- scm_gc_unprotect_object (key_->self_scm());
-
output_def_ = o;
- final_mom_ = final;
definition_ = find_context_def (o, ly_symbol2scm ("Global"));
- Context_def *globaldef = unsmob_context_def (definition_);
+ 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.");
- }
+ programming_error ("no `Global' context found");
else
globaldef->apply_default_property_operations (this);
accepts_list_ = scm_list_1 (ly_symbol2scm ("Score"));
}
-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"));
- clear_key_disambiguations ();
- 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 (scm_is_pair (context_list_))
- ? dynamic_cast<Score_context*> (unsmob_context (scm_car (context_list_)))
+ ? unsmob_context (scm_car (context_list_))
: 0;
}
-Music_output*
+SCM
Global_context::get_output ()
{
- return get_score_context ()->get_output ();
-}
-
-void
-Global_context::one_time_step ()
-{
- get_score_context ()->one_time_step ();
- apply_finalizations ();
- check_removal ();
-}
-
-void
-Global_context::finish ()
-{
- if (get_score_context ())
- get_score_context ()->finish ();
+ Context * c = get_score_context ();
+ if (c)
+ return c->get_property ("output");
+ else
+ return SCM_EOL;
}
void
-Global_context::run_iterator_on_me (Music_iterator * iter)
+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 (first)
- {
+ {
/*
Need this to get grace notes at start of a piece correct.
- */
- first = false;
- set_property ("measurePosition", w.smobbed_copy ());
- }
-
+ */
+ first = false;
+ set_property ("measurePosition", w.smobbed_copy ());
+ }
- 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 sym = ly_symbol2scm ("Score");
- Context_def * t = unsmob_context_def (find_context_def (get_output_def (), sym));
- if (!t)
- error (_f ("can't find `%s' context", "Score"));
-
- Object_key const *key = get_context_key ("Score", "");
- Context *c = t->instantiate (SCM_EOL, key);
- add_context (c);
- scm_gc_unprotect_object (key->self_scm());
-
- Score_context *sc = dynamic_cast<Score_context*> (c);
- sc->prepare (w);
- }
-
- one_time_step ();
+ send_stream_event (this, "OneTimeStep", 0, 0);
+ apply_finalizations ();
+ check_removal ();
}
}
SCM lst = get_property ("finalizations");
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));
}
{
SCM lst = get_property ("finalizations");
lst = scm_cons (x, lst);
- set_property ("finalizations", lst);
+ set_property ("finalizations", lst);
}
Moment
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