X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftranslator-group.cc;h=172c5b2a3aed958b36c6508d89901270b0b60422;hb=73b1239c26cd8f25d34ed9595967caa99932d784;hp=bac3a47db03264fcdec033423634f330d1038464;hpb=fb2cb5e32d671334270e101a7a286ee80d5ade00;p=lilypond.git diff --git a/lily/translator-group.cc b/lily/translator-group.cc index bac3a47db0..172c5b2a3a 100644 --- a/lily/translator-group.cc +++ b/lily/translator-group.cc @@ -1,438 +1,380 @@ /* - 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 + (c) 1997--2006 Han-Wen Nienhuys , + Erik Sandberg */ -#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 "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 "stream-event.hh" +#include "warn.hh" -Translator_group::~Translator_group () +Translator_group * +Translator_group::get_daddy_translator () const { - - //assert (removable_b ()); + return context ()->get_parent_context ()->implementation (); } - -Translator_group::Translator_group () +void +translator_each (SCM list, Translator_method method) { - iterator_count_ = 0; - Scheme_hash_table *tab = new Scheme_hash_table ; - properties_scm_ = tab->self_scm (); - - scm_gc_unprotect_object (tab->self_scm ()); + for (SCM p = list; scm_is_pair (p); p = scm_cdr (p)) + (unsmob_translator (scm_car (p))->*method) (); } void -Translator_group::check_removal () +Translator_group::initialize () { - 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 (unsmob_translator (ly_car (p))); - - trg->check_removal (); - if (trg->removable_b ()) - terminate_translator (trg); - } + precompute_method_bindings (); } -SCM -Translator_group::add_translator (SCM list, Translator *t) +void +Translator_group::connect_to_context (Context *c) { - /* - 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; + if (context_) + programming_error ("translator group is already connected to a context"); + context_ = c; + c->event_source ()->add_listener (GET_LISTENER (eat_event), + ly_symbol2scm ("MusicEvent")); + c->event_source ()->add_listener (GET_LISTENER (create_child_translator), + ly_symbol2scm ("AnnounceNewContext")); } - void -Translator_group::add_used_group_translator (Translator *t) +Translator_group::disconnect_from_context () { - trans_group_list_ = add_translator (trans_group_list_,t); + context_->event_source ()->remove_listener (GET_LISTENER (eat_event), + ly_symbol2scm ("MusicEvent")); + context_->event_source ()->remove_listener (GET_LISTENER (create_child_translator), + ly_symbol2scm ("AnnounceNewContext")); + context_ = 0; } - void -Translator_group::add_fresh_group_translator (Translator*t) +Translator_group::finalize () { - Translator_group*tg = dynamic_cast (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 (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) +SCM +filter_performers (SCM ell) { - Translator_group * existing = find_existing_translator_l (n,id); - if (existing) - return existing; - - Link_array path - = unsmob_translator_def (definition_)->path_to_acceptable_translator (ly_str02scm ((char*)n.ch_C ()), output_def_l ()); - - if (path.size ()) + SCM *tail = ℓ + for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p)) { - 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_); - - if (i == path.size () -1) - new_group->id_str_ = id; - current->add_fresh_group_translator (new_group); - current = new_group; - } - - return current; + if (dynamic_cast (unsmob_translator (scm_car (*tail)))) + *tail = scm_cdr (*tail); + else + tail = SCM_CDRLOC (*tail); } + return ell; +} - Translator_group *ret = 0; - if (daddy_trans_l_) - ret = daddy_trans_l_->find_create_translator_l (n,id); - else +SCM +filter_engravers (SCM ell) +{ + SCM *tail = ℓ + for (SCM p = ell; scm_is_pair (p); p = scm_cdr (p)) { - warning (_f ("can't find or create `%s' called `%s'", n, id)); - ret =0; + if (dynamic_cast (unsmob_translator (scm_car (*tail)))) + *tail = scm_cdr (*tail); + else + tail = SCM_CDRLOC (*tail); } - return ret; + return ell; } -bool -Translator_group::try_music_on_nongroup_children (Music *m) -{ - bool hebbes_b =false; +/* + 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) +{ + 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 (); - for (SCM p = simple_trans_list_; !hebbes_b && gh_pair_p (p); p = ly_cdr (p)) + SCM trans_names = def->get_translator_names (ops); + + Translator_group *g = get_translator_group (def->get_translator_group_type ()); + SCM trans_list = SCM_EOL; + + for (SCM s = trans_names; scm_is_pair (s); s = scm_cdr (s)) { - hebbes_b = unsmob_translator (ly_car (p))->try_music (m); + Translator *type = get_translator (scm_car (s)); + if (!type) + warning (_f ("can't find: `%s'", ly_symbol2string (scm_car (s)).c_str ())); + else + { + 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); + + tr->daddy_context_ = new_context; + tr->unprotect (); + } } - 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 ; -} + g->simple_trans_list_ = trans_list; -int -Translator_group::depth_i () const -{ - return (daddy_trans_l_) ? daddy_trans_l_->depth_i () + 1 : 0; -} + /* Filter unwanted translator types. Required to make + \with {\consists "..."} work. */ + if (dynamic_cast (g)) + g->simple_trans_list_ = filter_performers (g->simple_trans_list_); + else if (dynamic_cast (g)) + g->simple_trans_list_ = filter_engravers (g->simple_trans_list_); -Translator_group* -Translator_group::ancestor_l (int level) -{ - if (!level || !daddy_trans_l_) - return this; + // TODO: scrap Context::implementation + new_context->implementation_ = g; - return daddy_trans_l_->ancestor_l (level-1); -} + g->connect_to_context (new_context); + g->unprotect (); -void -Translator_group::terminate_translator (Translator*r_l) -{ - r_l->removal_processing (); - /* - Return value ignored. GC does the rest. - */ - remove_translator_p (r_l); + recurse_over_translators (new_context, + &Translator::initialize, + &Translator_group::initialize, + DOWN); } - -/** - Remove a translator from the hierarchy. - */ -Translator * -Translator_group::remove_translator_p (Translator*trans_l) +IMPLEMENT_LISTENER (Translator_group, eat_event); +void +Translator_group::eat_event (SCM sev) { - assert (trans_l); - - trans_group_list_ = scm_delq_x (trans_l->self_scm (), trans_group_list_); - trans_l->daddy_trans_l_ = 0; - return trans_l; + Stream_event *ev = unsmob_stream_event (sev); + SCM sm = ev->get_property ("music"); + Music *m = unsmob_music (sm); + try_music (m); } bool -Translator_group::is_bottom_translator_b () const +Translator_group::try_music (Music *m) { - return !gh_string_p (unsmob_translator_def (definition_)->default_child_context_name ()); + SCM name = scm_sloppy_assq (ly_symbol2scm ("name"), + m->get_property_alist (false)); -} + if (!scm_is_pair (name)) + return false; -Translator_group* -Translator_group::get_default_interpreter () -{ - if (!is_bottom_translator_b ()) + name = scm_cdr (name); + SCM accept_list = scm_hashq_ref (accept_hash_table_, name, SCM_UNDEFINED); + if (accept_list == SCM_BOOL_F) { - SCM nm = unsmob_translator_def (definition_)->default_child_context_name (); - SCM st = output_def_l ()->find_translator_l (nm); - - 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); + accept_list = find_accept_translators (get_simple_trans_list (), + m->get_property ("types")); + scm_hashq_set_x (accept_hash_table_, name, accept_list); + } - if (!tg->is_bottom_translator_b ()) - return tg->get_default_interpreter (); - else - return tg; + for (SCM p = accept_list; scm_is_pair (p); p = scm_cdr (p)) + { + Translator *t = unsmob_translator (scm_car (p)); + if (t && t->try_music (m)) + return true; } - return this; + + // 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; } -static void -static_each (SCM list, Method_pointer method) +SCM +Translator_group::get_simple_trans_list () { - for (SCM p = list; gh_pair_p (p); p = ly_cdr (p)) - (unsmob_translator (ly_car (p))->*method) (); - + return simple_trans_list_; } void -Translator_group::each (Method_pointer method) +precomputed_recurse_over_translators (Context *c, Translator_precompute_index idx, 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 (dir == DOWN) { - return (Translator_group*)this; + tg->precomputed_translator_foreach (idx); + tg->call_precomputed_self_method (idx); } - 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)) + precomputed_recurse_over_translators (unsmob_context (scm_car (s)), idx, dir); + + if (dir == UP) + { + tg->precomputed_translator_foreach (idx); + tg->call_precomputed_self_method (idx); + } } -/* - return SCM_EOL when not found. -*/ -SCM -Translator_group::internal_get_property (SCM sym) const +void +recurse_over_translators (Context *c, Translator_method ptr, Translator_group_method tg_ptr, Direction dir) { - SCM val =SCM_EOL; - if (properties_dict ()->try_retrieve (sym, &val)) - return val; + Translator_group *tg + = dynamic_cast (c->implementation ()); - if (daddy_trans_l_) - return daddy_trans_l_->internal_get_property (sym); - - return val; + if (dir == DOWN) + { + (tg->*tg_ptr) (); + translator_each (tg->get_simple_trans_list (), ptr); + } + + 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); + + 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); + 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 (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 + 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 &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::do_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 (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 (t); + 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; +} - 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_; }