/*
- Translator_group.cc -- implement Translator_group
+ translator-group.cc -- implement Translator_group
source file of the GNU LilyPond music typesetter
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>,
+ Erik Sandberg <mandolaerik@gmail.com>
*/
-#include "music-output-def.hh"
#include "translator-group.hh"
-#include "translator.hh"
-#include "debug.hh"
-#include "moment.hh"
-#include "scm-hash.hh"
-#include "translator-def.hh"
-#include "main.hh"
-
-Translator_group::Translator_group (Translator_group const&s)
- : Translator (s)
-{
- iterator_count_ =0;
-
- Scheme_hash_table * tab = new Scheme_hash_table (*s.properties_dict ());
- properties_scm_ = tab->self_scm ();
- scm_gc_unprotect_object (tab->self_scm ());
-}
-Scheme_hash_table*
-Translator_group::properties_dict () const
-{
- return Scheme_hash_table::unsmob (properties_scm_);
-}
+#include "context-def.hh"
+#include "context.hh"
+#include "dispatcher.hh"
+#include "international.hh"
+#include "main.hh"
+#include "music.hh"
+#include "output-def.hh"
+#include "scm-hash.hh"
+#include "stream-event.hh"
+#include "warn.hh"
-Translator_group::~Translator_group ()
+Translator_group *
+Translator_group::get_daddy_translator () const
{
-
- //assert (removable_b ());
-}
-
-
-Translator_group::Translator_group ()
-{
- iterator_count_ = 0;
- Scheme_hash_table *tab = new Scheme_hash_table ;
- properties_scm_ = tab->self_scm ();
-
- scm_gc_unprotect_object (tab->self_scm ());
+ return context ()->get_parent_context ()->implementation ();
}
void
-Translator_group::check_removal ()
+translator_each (SCM list, Translator_method method)
{
- SCM next = SCM_EOL;
- for (SCM p = trans_group_list_; gh_pair_p (p); p = next)
- {
- next = ly_cdr (p);
-
- Translator_group *trg = dynamic_cast<Translator_group*> (unsmob_translator (ly_car (p)));
-
- trg->check_removal ();
- if (trg->removable_b ())
- terminate_translator (trg);
- }
+ for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
+ (unsmob_translator (scm_car (p))->*method) ();
}
-SCM
-Translator_group::add_translator (SCM list, Translator *t)
+void
+Translator_group::initialize ()
{
- /*
- Must append, since list ordering must be preserved.
- */
- list = gh_append2 (list, gh_cons (t->self_scm (), SCM_EOL));
- t->daddy_trans_l_ = this;
- t->output_def_l_ = output_def_l_;
-
- return list;
+ precompute_method_bindings ();
}
-
void
-Translator_group::add_used_group_translator (Translator *t)
+Translator_group::connect_to_context (Context *c)
{
- trans_group_list_ = add_translator (trans_group_list_,t);
+ if (context_)
+ programming_error ("already connected to a context");
+ context_ = c;
+ c->event_source ()->add_listener (GET_LISTENER (eat_event), ly_symbol2scm ("MusicEvent"));
}
-
void
-Translator_group::add_fresh_group_translator (Translator*t)
+Translator_group::finalize ()
{
- Translator_group*tg = dynamic_cast<Translator_group*> (t);
- assert (tg);
-
- trans_group_list_ = add_translator (trans_group_list_,t);
- unsmob_translator_def (tg->definition_)->apply_property_operations (tg);
- t->initialize ();
-
}
-
bool
-Translator_group::removable_b () const
+translator_accepts_any_of (Translator *tr, SCM ifaces)
{
- return trans_group_list_ == SCM_EOL && ! iterator_count_;
+ SCM ack_ifs = scm_assoc (ly_symbol2scm ("events-accepted"),
+ tr->translator_description ());
+ ack_ifs = scm_cdr (ack_ifs);
+ for (SCM s = ifaces; scm_is_pair (s); s = scm_cdr (s))
+ if (scm_c_memq (scm_car (s), ack_ifs) != SCM_BOOL_F)
+ return true;
+ return false;
}
-Translator_group *
-Translator_group::find_existing_translator_l (String n, String id)
+SCM
+find_accept_translators (SCM gravlist, SCM ifaces)
{
- if (is_alias_b (n) && (id_str_ == id || id.empty_b ()))
- return this;
-
- Translator_group* r = 0;
- for (SCM p = trans_group_list_; !r && gh_pair_p (p); p = ly_cdr (p))
+ SCM l = SCM_EOL;
+ for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s))
{
- Translator * t = unsmob_translator (ly_car (p));
-
- r = dynamic_cast<Translator_group*> (t)->find_existing_translator_l (n, id);
+ Translator *tr = unsmob_translator (scm_car (s));
+ if (translator_accepts_any_of (tr, ifaces))
+ l = scm_cons (tr->self_scm (), l);
}
+ l = scm_reverse_x (l, SCM_EOL);
- return r;
+ return l;
}
-
-
-
-Translator_group*
-Translator_group::find_create_translator_l (String n, String id)
+IMPLEMENT_LISTENER (Translator_group, eat_event);
+void
+Translator_group::eat_event (SCM sev)
{
- Translator_group * existing = find_existing_translator_l (n,id);
- if (existing)
- return existing;
-
- Link_array<Translator_def> path
- = unsmob_translator_def (definition_)->path_to_acceptable_translator (ly_str02scm ((char*)n.ch_C ()), output_def_l ());
-
- if (path.size ())
- {
- Translator_group * current = this;
-
- // start at 1. The first one (index 0) will be us.
- for (int i=0; i < path.size (); i++)
- {
- Translator_group * new_group = path[i]->instantiate (output_def_l_);
+ Stream_event *ev = unsmob_stream_event (sev);
+ SCM sm = ev->get_property ("music");
+ Music *m = unsmob_music (sm);
+ try_music (m);
+}
- if (i == path.size () -1)
- new_group->id_str_ = id;
- current->add_fresh_group_translator (new_group);
- current = new_group;
- }
+bool
+Translator_group::try_music (Music *m)
+{
+ SCM name = scm_sloppy_assq (ly_symbol2scm ("name"),
+ m->get_property_alist (false));
- return current;
- }
+ if (!scm_is_pair (name))
+ return false;
- Translator_group *ret = 0;
- if (daddy_trans_l_)
- ret = daddy_trans_l_->find_create_translator_l (n,id);
- else
+ name = scm_cdr (name);
+ SCM accept_list = scm_hashq_ref (accept_hash_table_, name, SCM_UNDEFINED);
+ if (accept_list == SCM_BOOL_F)
{
- warning (_f ("can't find or create `%s' called `%s'", n, id));
- ret =0;
+ accept_list = find_accept_translators (get_simple_trans_list (),
+ m->get_property ("types"));
+ scm_hashq_set_x (accept_hash_table_, name, accept_list);
}
- return ret;
-}
-bool
-Translator_group::try_music_on_nongroup_children (Music *m)
-{
- bool hebbes_b =false;
-
- for (SCM p = simple_trans_list_; !hebbes_b && gh_pair_p (p); p = ly_cdr (p))
+ for (SCM p = accept_list; scm_is_pair (p); p = scm_cdr (p))
{
- hebbes_b = unsmob_translator (ly_car (p))->try_music (m);
+ Translator *t = unsmob_translator (scm_car (p));
+ if (t && t->try_music (m))
+ return true;
}
- return hebbes_b;
-}
-
-bool
-Translator_group::try_music (Music* m)
-{
- bool hebbes_b = try_music_on_nongroup_children (m);
-
- if (!hebbes_b && daddy_trans_l_)
- hebbes_b = daddy_trans_l_->try_music (m);
- return hebbes_b ;
-}
-
-int
-Translator_group::depth_i () const
-{
- return (daddy_trans_l_) ? daddy_trans_l_->depth_i () + 1 : 0;
+
+ // We couldn't swallow the event in this context. Try parent.
+ Context *p = context ()->get_parent_context ();
+ // Global context's translator group is a dummy, so don't try it.
+ if (p->get_parent_context())
+ // ES todo: Make Translators listeners directly instead.
+ return p->implementation ()->try_music (m);
+ else
+ // We have tried all possible contexts. Give up.
+ m->origin ()->warning (_f ("junking event: `%s'", m->name ()));
+ return false;
}
-Translator_group*
-Translator_group::ancestor_l (int level)
+SCM
+Translator_group::get_simple_trans_list ()
{
- if (!level || !daddy_trans_l_)
- return this;
-
- return daddy_trans_l_->ancestor_l (level-1);
+ return simple_trans_list_;
}
void
-Translator_group::terminate_translator (Translator*r_l)
+precomputed_recurse_over_translators (Context *c, Translator_precompute_index idx, Direction dir)
{
- r_l->removal_processing ();
- /*
- Return value ignored. GC does the rest.
- */
- remove_translator_p (r_l);
-}
-
-
-/**
- Remove a translator from the hierarchy.
- */
-Translator *
-Translator_group::remove_translator_p (Translator*trans_l)
-{
- assert (trans_l);
+ Translator_group *tg
+ = dynamic_cast<Translator_group *> (c->implementation ());
- trans_group_list_ = scm_delq_x (trans_l->self_scm (), trans_group_list_);
- trans_l->daddy_trans_l_ = 0;
- return trans_l;
-}
-
-bool
-Translator_group::is_bottom_translator_b () const
-{
- return !gh_string_p (unsmob_translator_def (definition_)->default_child_context_name ());
-
-}
-
-Translator_group*
-Translator_group::get_default_interpreter ()
-{
- if (!is_bottom_translator_b ())
+ if (dir == DOWN)
{
- SCM nm = unsmob_translator_def (definition_)->default_child_context_name ();
- SCM st = output_def_l ()->find_translator_l (nm);
+ tg->precomputed_translator_foreach (idx);
+ tg->call_precomputed_self_method (idx);
+ }
- Translator_def *t = unsmob_translator_def (st);
- if (!t)
- {
- warning (_f ("can't find or create: `%s'", ly_scm2string (nm).ch_C ()));
- t = unsmob_translator_def (this->definition_);
- }
- Translator_group *tg = t->instantiate (output_def_l_);
- add_fresh_group_translator (tg);
+ 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);
- if (!tg->is_bottom_translator_b ())
- return tg->get_default_interpreter ();
- else
- return tg;
+ if (dir == UP)
+ {
+ tg->precomputed_translator_foreach (idx);
+ tg->call_precomputed_self_method (idx);
}
- return this;
-}
-
-static void
-static_each (SCM list, Method_pointer method)
-{
- for (SCM p = list; gh_pair_p (p); p = ly_cdr (p))
- (unsmob_translator (ly_car (p))->*method) ();
-
}
void
-Translator_group::each (Method_pointer method)
+recurse_over_translators (Context *c, Translator_method ptr, Translator_group_method tg_ptr, Direction dir)
{
- static_each (simple_trans_list_, method);
- static_each (trans_group_list_, method);
-}
-
+ Translator_group *tg
+ = dynamic_cast<Translator_group *> (c->implementation ());
-/*
- PROPERTIES
- */
-Translator_group*
-Translator_group::where_defined (SCM sym) const
-{
- if (properties_dict ()->elem_b (sym))
+ if (dir == DOWN)
{
- return (Translator_group*)this;
+ (tg->*tg_ptr) ();
+ translator_each (tg->get_simple_trans_list (), ptr);
}
- return (daddy_trans_l_) ? daddy_trans_l_->where_defined (sym) : 0;
-}
+ 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);
-/*
- return SCM_EOL when not found.
-*/
-SCM
-Translator_group::internal_get_property (SCM sym) const
-{
- SCM val =SCM_EOL;
- if (properties_dict ()->try_retrieve (sym, &val))
- return val;
-
- if (daddy_trans_l_)
- return daddy_trans_l_->internal_get_property (sym);
-
- return val;
+ if (dir == UP)
+ {
+ translator_each (tg->get_simple_trans_list (),
+ ptr);
+
+ (tg->*tg_ptr) ();
+ }
}
-void
-Translator_group::internal_set_property (SCM sym, SCM val)
+Translator_group::Translator_group ()
{
-#ifndef NDEBUG
- if (internal_type_checking_global_b)
- assert (type_check_assignment (sym, val, ly_symbol2scm ("translation-type?")));
-#endif
-
- properties_dict ()->set (sym, val);
+ simple_trans_list_ = SCM_EOL;
+ accept_hash_table_ = SCM_EOL;
+ context_ = 0;
+ smobify_self ();
+
+ accept_hash_table_ = scm_c_make_hash_table (19);
}
-/*
- TODO: look up to check whether we have inherited var?
- */
void
-Translator_group::unset_property (SCM sym)
+Translator_group::derived_mark () const
{
- properties_dict ()->remove (sym);
}
-
-/*
- Push or pop (depending on value of VAL) a single entry (ELTPROP . VAL)
- entry from a translator property list by name of PROP
-*/
void
-Translator_group::execute_single_pushpop_property (SCM prop, SCM eltprop, SCM val)
+Translator_group::precompute_method_bindings ()
{
- if (gh_symbol_p (prop))
+ for (SCM s = simple_trans_list_; scm_is_pair (s); s = scm_cdr (s))
{
- if (val != SCM_UNDEFINED)
- {
- SCM prev = internal_get_property (prop);
-
- if (gh_pair_p (prev) || prev == SCM_EOL)
- {
- bool ok = type_check_assignment (eltprop, val, ly_symbol2scm ("backend-type?"));
-
- if (ok)
- {
- prev = gh_cons (gh_cons (eltprop, val), prev);
- internal_set_property (prop, prev);
- }
- }
- else
- {
- // warning here.
- }
-
- }
- else
+ Translator *tr = unsmob_translator (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++)
{
- SCM prev = internal_get_property (prop);
-
- SCM newprops= SCM_EOL ;
- while (gh_pair_p (prev) && ly_caar (prev) != eltprop)
- {
- newprops = gh_cons (ly_car (prev), newprops);
- prev = ly_cdr (prev);
- }
-
- if (gh_pair_p (prev))
- {
- newprops = scm_reverse_x (newprops, ly_cdr (prev));
- internal_set_property (prop, newprops);
- }
+ if (ptrs[i])
+ precomputed_method_bindings_[i].push_back (Translator_method_binding (tr, ptrs[i]));
}
}
-}
-
-
-
-
-/*
- STUBS
-*/
-void
-Translator_group::stop_translation_timestep ()
-{
- each (&Translator::stop_translation_timestep);
+ fetch_precomputable_methods (precomputed_self_method_bindings_);
}
void
-Translator_group::start_translation_timestep ()
+Translator_group::precomputed_translator_foreach (Translator_precompute_index idx)
{
- each (&Translator::start_translation_timestep);
+ vector<Translator_method_binding> &bindings (precomputed_method_bindings_[idx]);
+ for (vsize i = 0; i < bindings.size (); i++)
+ bindings[i].invoke ();
}
void
-Translator_group::do_announces ()
+Translator_group::fetch_precomputable_methods (Translator_group_void_method ptrs[])
{
- each (&Translator::announces);
+ for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++)
+ ptrs[i] = 0;
}
void
-Translator_group::initialize ()
+Translator_group::call_precomputed_self_method (Translator_precompute_index idx)
{
- each (&Translator::initialize);
+ if (precomputed_self_method_bindings_[idx])
+ (*precomputed_self_method_bindings_[idx]) (this);
}
-void
-Translator_group::finalize ()
+Translator_group::~Translator_group ()
{
- each (&Translator::removal_processing);
}
-LY_DEFINE(ly_get_context_property,
- "ly-get-context-property", 2, 0, 0,
- (SCM context, SCM name),
- "retrieve the value of @var{sym} from context @var{tr}")
-{
- Translator *t = unsmob_translator (context);
- Translator_group* tr= dynamic_cast<Translator_group*> (t);
- SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Translator group");
- SCM_ASSERT_TYPE(gh_symbol_p(name), name, SCM_ARG2, __FUNCTION__, "symbol");
+#include "ly-smobs.icc"
- return tr->internal_get_property (name);
-
-}
+IMPLEMENT_SMOBS (Translator_group);
+IMPLEMENT_DEFAULT_EQUAL_P (Translator_group);
+IMPLEMENT_TYPE_P (Translator_group, "ly:translator-group?");
-LY_DEFINE(ly_set_context_property,
- "ly-set-context-property", 3, 0, 0,
- (SCM context, SCM name, SCM val),
- "set value of property @var{sym} in context @var{tr} to @var{val}.
-")
+int
+Translator_group::print_smob (SCM s, SCM port, scm_print_state *)
{
- Translator *t = unsmob_translator (context);
- Translator_group* tr= dynamic_cast<Translator_group*> (t);
+ Translator_group *me = (Translator_group *) SCM_CELL_WORD_1 (s);
+ scm_puts ("#<Translator_group ", port);
+ scm_puts (me->class_name (), port);
+ scm_display (me->simple_trans_list_, port);
+ scm_puts (" >", port);
+ return 1;
+}
- SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Context");
- tr->internal_set_property (name, val);
+SCM
+Translator_group::mark_smob (SCM smob)
+{
+ Translator_group *me = (Translator_group *)SCM_CELL_WORD_1 (smob);
- return SCM_UNSPECIFIED;
+ me->derived_mark ();
+ scm_gc_mark (me->accept_hash_table_);
+ return me->simple_trans_list_;
}
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