source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
#include "translator.hh"
-#include "debug.hh"
+
+#include "warn.hh"
#include "translator-group.hh"
+#include "context-def.hh"
+#include "dispatcher.hh"
+#include "global-context.hh"
-#include "moment.hh"
+#include "translator.icc"
+#include "ly-smobs.icc"
-char const*
-Translator::name() const
+Translator::~Translator ()
{
- return classname(this);
}
-Translator::~Translator ()
+void
+Translator::init ()
{
+ must_be_last_ = false;
+ self_scm_ = SCM_EOL;
+ daddy_context_ = 0;
+ smobify_self ();
}
-Translator::Translator ()
+void
+Translator::process_music ()
{
- status = ORPHAN;
- daddy_trans_l_ = 0;
- output_def_l_ = 0;
}
-Translator::Translator (Translator const &s)
- : Input (s)
+void
+Translator::process_acknowledged ()
{
- status = ORPHAN;
- daddy_trans_l_ =0;
- output_def_l_ = s.output_def_l_;
- type_str_ = s.type_str_;
}
-bool
-Translator::is_alias_b (String s) const
+Translator::Translator ()
{
- return s == type_str_;
+ init ();
+}
+
+Translator::Translator (Translator const &src)
+{
+ init ();
+ must_be_last_ = src.must_be_last_;
}
bool
-Translator::do_try_music (Music *)
+Translator::try_music (Music *)
{
return false;
}
-
Moment
Translator::now_mom () const
{
- return daddy_trans_l_->now_mom ();
+ return daddy_context_->now_mom ();
}
+Output_def *
+Translator::get_output_def () const
+{
+ return daddy_context_->get_output_def ();
+}
-void
-Translator::add_processing ()
+Translator_group *
+Translator::get_daddy_translator () const
{
- if (status > ORPHAN)
- return;
-
- do_add_processing ();
- status = VIRGIN;
+ return daddy_context_->implementation ();
}
void
-Translator::do_add_processing ()
+Translator::protect_event (SCM ev)
{
+ get_daddy_translator ()->protect_event (ev);
}
-void
-Translator::print () const
+SCM
+Translator::internal_get_property (SCM sym) const
{
-#ifndef NPRINT
- DEBUG_OUT << classname (this) << " {";
- if (classname (this) != type_str_)
- DEBUG_OUT << "type = " << type_str_;
- do_print ();
- DEBUG_OUT << "}\n";
-#endif
+ return daddy_context_->internal_get_property (sym);
}
void
-Translator::do_print () const
+Translator::stop_translation_timestep ()
{
}
+/*
+ this function has 2 properties
+ - It is called before try_music ()
+ - It is called before any user information enters the translators.
+ (i.e. any \property or event is not processed yet.)
+*/
+void
+Translator::start_translation_timestep ()
+{
+}
void
-Translator::creation_processing ()
+Translator::initialize ()
{
- if (status >= CREATION_INITED)
- return ;
-
- do_creation_processing ();
- status = CREATION_INITED;
}
void
-Translator::post_move_processing ()
+Translator::finalize ()
{
- if (status >= MOVE_INITED)
- return;
+}
- creation_processing ();
- do_post_move_processing ();
- status = MOVE_INITED;
+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_);
}
void
-Translator::removal_processing ()
+Translator::disconnect_from_context (Context *c)
{
- if (status == ORPHAN)
- return;
- creation_processing ();
- do_removal_processing ();
- // elegancy ...
- // status = ORPHAN;
+ for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
+ c->events_below ()->remove_listener (r->get_listener_ (this), r->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.
-bool
-Translator::try_music (Music * r)
-{
- if (status < MOVE_INITED)
- post_move_processing ();
+ 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)
+{
+ /* ev_class is the C++ identifier name. Convert to scm symbol */
+ string name = string (ev_class);
+ name = replace_all (name, '_', '-');
+ name = name + "-event";
+ /* It's OK to use scm_gc_protect_object for protection, because r is
+ statically allocated. */
+ r->event_class_ = scm_gc_protect_object (scm_str2symbol (name.c_str ()));
+ r->get_listener_ = get_listener;
+ r->next_ = *listener_list;
+ *listener_list = r;
+}
- return do_try_music (r);
+/*
+ SMOBS
+*/
+SCM
+Translator::mark_smob (SCM sm)
+{
+ Translator *me = (Translator *) SCM_CELL_WORD_1 (sm);
+ me->derived_mark ();
+ return SCM_EOL;
}
-void
-Translator::process_requests ()
+Global_context *
+Translator::get_global_context () const
{
- if (status < PROCESSED_REQS)
- post_move_processing ();
- else if (status >= PROCESSED_REQS)
- return;
-
- status = PROCESSED_REQS;
- do_process_requests ();
+ return daddy_context_->get_global_context ();
}
-void
-Translator::pre_move_processing ()
+Context *
+Translator::get_score_context () const
{
- do_pre_move_processing ();
- status = CREATION_INITED;
+ return daddy_context_->get_score_context ();
}
+IMPLEMENT_SMOBS (Translator);
+IMPLEMENT_DEFAULT_EQUAL_P (Translator);
+IMPLEMENT_TYPE_P (Translator, "ly:translator?");
+bool
+Translator::must_be_last () const
+{
+ return must_be_last_;
+}
-Music_output_def *
-Translator::output_def_l () const
+void
+Translator::derived_mark () const
{
- return output_def_l_;
}
-SCM
-Translator::get_property (String id, Translator_group **where_l) const
+int
+Translator::print_smob (SCM s, SCM port, scm_print_state *)
{
- return daddy_trans_l_->get_property (ly_symbol2scm (id.ch_C()), where_l);
+ Translator *me = (Translator *) SCM_CELL_WORD_1 (s);
+ scm_puts ("#<Translator ", port);
+ scm_puts (me->class_name (), port);
+ scm_puts (" >", port);
+ return 1;
}
-SCM
-Translator::get_property (SCM sym,
- Translator_group **where_l) const
+void
+add_acknowledger (Engraver_void_function_engraver_grob_info ptr,
+ char const *func_name,
+ vector<Acknowledge_information> *ack_array)
{
- return daddy_trans_l_->get_property (sym, where_l);
+ Acknowledge_information inf;
+ inf.function_ = ptr;
+
+ string interface_name (func_name);
+
+ interface_name = replace_all (interface_name, '_', '-');
+ interface_name += "-interface";
+
+ inf.symbol_ = scm_gc_protect_object (ly_symbol2scm (interface_name.c_str ()));
+ ack_array->push_back (inf);
}
+Engraver_void_function_engraver_grob_info
+generic_get_acknowledger (SCM sym, vector<Acknowledge_information> const *ack_array)
+{
+ for (vsize i = 0; i < ack_array->size (); i++)
+ {
+ if (ack_array->at (i).symbol_ == sym)
+ return ack_array->at (i).function_;
+ }
+ return 0;
+}
+Moment
+get_event_length (Stream_event *e)
+{
+ Moment *m = unsmob_moment (e->get_property ("length"));
+ if (m)
+ return *m;
+ else
+ return Moment (0);
+}
-void
-Translator:: do_pre_move_processing(){}
-void
-Translator::do_post_move_processing(){}
-void
-Translator::do_process_requests () {}
-void
-Translator::do_creation_processing() {}
-void
-Translator::do_removal_processing(){}
+ADD_TRANSLATOR (Translator,
+ "Base class. Unused",
+ "",
+ "",
+ "",
+ "");
projects / lilypond.git / blobdiff