X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftranslator-group.cc;h=700f078f16f5048c8d6d05924cefc379951effcd;hb=98b5b6c845d9c34d9f1342f60f799569b60a5196;hp=5b16536e949dfa34b9adf518ae30faa78acb25c3;hpb=cda8fc1780778b760905c8832f7e984161218f20;p=lilypond.git diff --git a/lily/translator-group.cc b/lily/translator-group.cc index 5b16536e94..700f078f16 100644 --- a/lily/translator-group.cc +++ b/lily/translator-group.cc @@ -1,428 +1,326 @@ /* - Translator_group.cc -- implement Translator_group + translator-group.cc -- implement Translator_group source file of the GNU LilyPond music typesetter - (c) 1997--2000 Han-Wen Nienhuys + (c) 1997--2007 Han-Wen Nienhuys , + Erik Sandberg */ -#include "music-output-def.hh" #include "translator-group.hh" -#include "translator.hh" -#include "debug.hh" -#include "moment.hh" + +#include "context-def.hh" +#include "context.hh" +#include "dispatcher.hh" +#include "engraver-group.hh" +#include "international.hh" +#include "main.hh" +#include "music.hh" +#include "output-def.hh" +#include "performer-group.hh" #include "scm-hash.hh" -#include "killing-cons.tcc" -#include "translator-def.hh" +#include "warn.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_unprotect_object (tab->self_scm( )); -} -Scheme_hash_table* -Translator_group::properties_dict () const -{ - return Scheme_hash_table::unsmob (properties_scm_); -} - -Translator_group::~Translator_group () +void +translator_each (SCM list, Translator_method method) { - - //assert (removable_b()); + for (SCM p = list; scm_is_pair (p); p = scm_cdr (p)) + (unsmob_translator (scm_car (p))->*method) (); } - -Translator_group::Translator_group() +void +Translator_group::initialize () { - iterator_count_ = 0; - Scheme_hash_table *tab = new Scheme_hash_table ; - properties_scm_ = tab->self_scm (); - - scm_unprotect_object (tab->self_scm ()); + precompute_method_bindings (); } void -Translator_group::check_removal() +Translator_group::connect_to_context (Context *c) { - SCM next = SCM_EOL; - for (SCM p = trans_group_list_; gh_pair_p (p); p = next) + if (context_) { - next = gh_cdr (p); - - Translator_group *trg = dynamic_cast (unsmob_translator (gh_car (p))); - - trg->check_removal (); - if (trg->removable_b()) - terminate_translator (trg); + programming_error ("translator group is already connected to context " + + context_->context_name ()); + } + + context_ = c; + c->event_source ()->add_listener (GET_LISTENER (create_child_translator), + 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)); + tr->connect_to_context (c); } } - -SCM -Translator_group::add_translator (SCM list, Translator *t) +void +Translator_group::disconnect_from_context () { - list = gh_append2 (list, gh_cons (t->self_scm (), SCM_EOL)); - t->daddy_trans_l_ = this; - t->output_def_l_ = output_def_l_; - if (Translator_group*tg = dynamic_cast (t)) + for (SCM tr_list = simple_trans_list_; scm_is_pair (tr_list); tr_list = scm_cdr (tr_list)) { - unsmob_translator_def (tg->definition_)->apply_property_operations (tg); + Translator *tr = unsmob_translator (scm_car (tr_list)); + tr->disconnect_from_context (context_); } - - t->initialize (); - return list; + context_->event_source ()->remove_listener (GET_LISTENER (create_child_translator), + ly_symbol2scm ("AnnounceNewContext")); + context_ = 0; + protected_events_ = SCM_EOL; } + void -Translator_group::add_group_translator (Translator *t) +Translator_group::finalize () { - trans_group_list_ = add_translator (trans_group_list_,t); } - - -bool -Translator_group::removable_b() const +SCM +filter_performers (SCM ell) { - return trans_group_list_ == SCM_EOL && ! iterator_count_; + SCM *tail = ℓ + for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p)) + { + if (dynamic_cast (unsmob_translator (scm_car (*tail)))) + *tail = scm_cdr (*tail); + else + tail = SCM_CDRLOC (*tail); + } + return ell; } -Translator_group * -Translator_group::find_existing_translator_l (String n, String id) +SCM +filter_engravers (SCM ell) { - 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 = gh_cdr (p)) + SCM *tail = ℓ + for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p)) { - Translator * t = unsmob_translator (gh_car (p)); - - r = dynamic_cast (t)->find_existing_translator_l (n, id); + if (dynamic_cast (unsmob_translator (scm_car (*tail)))) + *tail = scm_cdr (*tail); + else + tail = SCM_CDRLOC (*tail); } - - return r; + return ell; } +/* + Protects the parameter from being garbage collected. The object is + protected until the next disconnect_from_context call. + + Whenever a child translator hears an event, the event is added to + 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? + */ +void +Translator_group::protect_event (SCM ev) +{ + protected_events_ = scm_cons (ev, protected_events_); +} - - -Translator_group* -Translator_group::find_create_translator_l (String n, String id) +/* + Create a new translator for a newly created child context. Triggered + by AnnounceNewContext events. + */ +IMPLEMENT_LISTENER (Translator_group, create_child_translator); +void +Translator_group::create_child_translator (SCM sev) { - Translator_group * existing = find_existing_translator_l (n,id); - if (existing) - return existing; + 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 ()); + SCM ops = new_context->get_definition_mods (); + + SCM trans_names = def->get_translator_names (ops); - Link_array path - = unsmob_translator_def (definition_)->path_to_acceptable_translator (ly_str02scm ((char*)n.ch_C()), output_def_l ()); + Translator_group *g = get_translator_group (def->get_translator_group_type ()); + SCM trans_list = SCM_EOL; - if (path.size ()) + for (SCM s = trans_names; scm_is_pair (s); s = scm_cdr (s)) { - Translator_group * current = this; - - // start at 1. The first one (index 0) will be us. - for (int i=0; i < path.size (); i++) + Translator *type = get_translator (scm_car (s)); + if (!type) + warning (_f ("cannot find: `%s'", ly_symbol2string (scm_car (s)).c_str ())); + else { - Translator_group * new_group = path[i]->instantiate (output_def_l_); + 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); - current->add_group_translator (new_group); - current = new_group; + tr->daddy_context_ = new_context; + tr->unprotect (); } - current->id_str_ = id; - return current; } - Translator_group *ret = 0; - if (daddy_trans_l_) - ret = daddy_trans_l_->find_create_translator_l (n,id); - else - { - warning (_f ("can't find or create `%s' called `%s'", n, id)); - ret =0; - } - return ret; -} + /* Filter unwanted translator types. Required to make + \with {\consists "..."} work. */ + if (dynamic_cast (g)) + g->simple_trans_list_ = filter_performers (trans_list); + else if (dynamic_cast (g)) + g->simple_trans_list_ = filter_engravers (trans_list); -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 = gh_cdr (p)) - { - hebbes_b = unsmob_translator (gh_car (p))->try_music (m); - } - return hebbes_b; -} + // TODO: scrap Context::implementation + new_context->implementation_ = g; -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 ; -} + g->connect_to_context (new_context); + g->unprotect (); -int -Translator_group::depth_i() const -{ - return (daddy_trans_l_) ? daddy_trans_l_->depth_i() + 1 : 0; + recurse_over_translators (new_context, + &Translator::initialize, + &Translator_group::initialize, + DOWN); } -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) -{ - 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) +precomputed_recurse_over_translators (Context *c, Translator_precompute_index idx, Direction dir) { - assert (trans_l); + Translator_group *tg + = dynamic_cast (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 (tg && 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_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 (tg && 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 = gh_cdr(p)) - (unsmob_translator (gh_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 (c->implementation ()); -/* - PROPERTIES - */ -Translator_group* -Translator_group::where_defined (SCM sym) const -{ - if (properties_dict ()->elem_b (sym)) + if (tg && 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::get_property (SCM sym) const -{ - SCM val =SCM_EOL; - if (properties_dict ()->try_retrieve (sym, &val)) - return val; + if (tg && dir == UP) + { + translator_each (tg->get_simple_trans_list (), + ptr); - if (daddy_trans_l_) - return daddy_trans_l_->get_property (sym); - - return val; + (tg->*tg_ptr) (); + } } -void -Translator_group::set_property (String id, SCM val) +Translator_group::Translator_group () { - set_property (ly_symbol2scm (id.ch_C()), val); + simple_trans_list_ = SCM_EOL; + protected_events_ = SCM_EOL; + context_ = 0; + smobify_self (); } void -Translator_group::set_property (SCM sym, SCM val) +Translator_group::derived_mark () const { - properties_dict ()->set (sym, val); } -/* - 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 = get_property (prop); + Translator *tr = unsmob_translator (scm_car (s)); + Translator_void_method_ptr ptrs[TRANSLATOR_METHOD_PRECOMPUTE_COUNT]; + tr->fetch_precomputable_methods (ptrs); - if (gh_pair_p (prev) || prev == SCM_EOL) - { - bool ok = type_check_assignment (val, eltprop, ly_symbol2scm ("backend-type?")); - - - - if (ok) - { - prev = gh_cons (gh_cons (eltprop, val), prev); - set_property (prop, prev); - } - } - else - { - // warning here. - } - - } - else + assert (tr); + for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++) { - SCM prev = get_property (prop); - - SCM newprops= SCM_EOL ; - while (gh_pair_p (prev) && gh_caar (prev) != eltprop) - { - newprops = gh_cons (gh_car (prev), newprops); - prev = gh_cdr (prev); - } - - if (gh_pair_p (prev)) - { - newprops = scm_reverse_x (newprops, gh_cdr (prev)); - set_property (prop, newprops); - } + if (ptrs[i]) + precomputed_method_bindings_[i].push_back (Translator_method_binding (tr, ptrs[i])); } } -} - - - + fetch_precomputable_methods (precomputed_self_method_bindings_); +} -/* - STUBS -*/ void -Translator_group::stop_translation_timestep () +Translator_group::precomputed_translator_foreach (Translator_precompute_index idx) { - each (&Translator::pre_move_processing); + vector &bindings (precomputed_method_bindings_[idx]); + for (vsize i = 0; i < bindings.size (); i++) + bindings[i].invoke (); } void -Translator_group::start_translation_timestep () +Translator_group::fetch_precomputable_methods (Translator_group_void_method ptrs[]) { - each (&Translator::post_move_processing); + for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++) + ptrs[i] = 0; } void -Translator_group::do_announces () +Translator_group::call_precomputed_self_method (Translator_precompute_index idx) { - each (&Translator::announces); + if (precomputed_self_method_bindings_[idx]) + (*precomputed_self_method_bindings_[idx]) (this); } -void -Translator_group::initialize () +Translator_group::~Translator_group () { - each (&Translator::initialize); } -void -Translator_group::finalize () +#include "ly-smobs.icc" + +IMPLEMENT_SMOBS (Translator_group); +IMPLEMENT_DEFAULT_EQUAL_P (Translator_group); +IMPLEMENT_TYPE_P (Translator_group, "ly:translator-group?"); + +int +Translator_group::print_smob (SCM s, SCM port, scm_print_state *) { - each (&Translator::removal_processing); + Translator_group *me = (Translator_group *) SCM_CELL_WORD_1 (s); + scm_puts ("#class_name (), port); + scm_display (me->simple_trans_list_, port); + scm_puts (" >", port); + return 1; } - -bool -type_check_assignment (SCM val, SCM sym, SCM type_symbol) +SCM +Translator_group::mark_smob (SCM smob) { - bool ok = true; - SCM type_p = SCM_EOL; - SCM errport = scm_current_error_port (); - - if (gh_symbol_p(sym)) - type_p = scm_object_property (sym, type_symbol); - - if (type_p != SCM_EOL && !gh_procedure_p (type_p)) - { - scm_puts (_("Couldn't find property type-check for `").ch_C(),errport); - scm_puts (String ("'").ch_C(), errport); - scm_display (sym, errport); - - scm_puts (_(". Perhaps you made a typing error?\n").ch_C(),errport); - } - else - { - if (val != SCM_EOL - && gh_procedure_p (type_p) - && gh_call1 (type_p, val) == SCM_BOOL_F) - { - ok = false; - scm_puts (_("Failed typecheck for `").ch_C (),errport); - scm_display (sym,errport); - scm_puts ( _("', value `").ch_C (), errport); - scm_write (val, errport); - scm_puts (_("' must be of type ").ch_C (), errport); - SCM typefunc = scm_eval2 (ly_symbol2scm ("type-name"), SCM_EOL); - scm_display (gh_call1 (typefunc, type_p), errport); - scm_puts ("\n", errport); - } - } - return ok; + Translator_group *me = (Translator_group *)SCM_CELL_WORD_1 (smob); + + me->derived_mark (); + scm_gc_mark (me->protected_events_); + return me->simple_trans_list_; }