X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftranslator-group.cc;h=badd1b82e802da140b35901b97a953e4be1b2ecd;hb=a68f287dcc2277fb7943923426c459dde0426598;hp=113a4595a85b7c01fdf5e00aaf2719c6ba750f1c;hpb=ac93c7dd01e0b6661c360acf89721ce9d32e4e4c;p=lilypond.git diff --git a/lily/translator-group.cc b/lily/translator-group.cc index 113a4595a8..badd1b82e8 100644 --- a/lily/translator-group.cc +++ b/lily/translator-group.cc @@ -1,29 +1,33 @@ /* - Translator_group.cc -- implement Translator_group + translator-group.cc -- implement Translator_group source file of the GNU LilyPond music typesetter - (c) 1997--2004 Han-Wen Nienhuys + (c) 1997--2006 Han-Wen Nienhuys , + Erik Sandberg */ -#include "output-def.hh" #include "translator-group.hh" -#include "translator.hh" -#include "warn.hh" -#include "moment.hh" -#include "scm-hash.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 "stream-event.hh" +#include "warn.hh" -Translator_group* +Translator_group * Translator_group::get_daddy_translator () const { return context ()->get_parent_context ()->implementation (); } - void translator_each (SCM list, Translator_method method) { @@ -31,17 +35,56 @@ translator_each (SCM list, Translator_method method) (unsmob_translator (scm_car (p))->*method) (); } - void Translator_group::initialize () { - SCM tab = scm_make_vector (scm_int2num (19), SCM_BOOL_F); - context ()->set_property ("acceptHashTable", tab); + precompute_method_bindings (); } +void +Translator_group::connect_to_context (Context *c) +{ + if (context_) + { + programming_error ("translator group is already connected to context " + + context_->context_name ()); + } + + context_ = c; + c->event_source ()->add_listener (GET_LISTENER (eat_event), + ly_symbol2scm ("OldMusicEvent")); + 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); + } +} + +void +Translator_group::disconnect_from_context () +{ + 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->disconnect_from_context (context_); + } + context_->event_source ()->remove_listener (GET_LISTENER (eat_event), + ly_symbol2scm ("OldMusicEvent")); + context_->event_source ()->remove_listener (GET_LISTENER (create_child_translator), + ly_symbol2scm ("AnnounceNewContext")); + context_ = 0; + protected_events_ = SCM_EOL; +} + +void +Translator_group::finalize () +{ +} bool -translator_accepts_any_of (Translator*tr, SCM ifaces) +translator_accepts_any_of (Translator *tr, SCM ifaces) { SCM ack_ifs = scm_assoc (ly_symbol2scm ("events-accepted"), tr->translator_description ()); @@ -56,21 +99,141 @@ SCM find_accept_translators (SCM gravlist, SCM ifaces) { SCM l = SCM_EOL; - for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s)) + for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s)) { - Translator* tr = unsmob_translator (scm_car (s)); + Translator *tr = unsmob_translator (scm_car (s)); if (translator_accepts_any_of (tr, ifaces)) - l = scm_cons (tr->self_scm (), l); + l = scm_cons (tr->self_scm (), l); } l = scm_reverse_x (l, SCM_EOL); return l; } +SCM +filter_performers (SCM ell) +{ + 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; +} + +SCM +filter_engravers (SCM ell) +{ + 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; +} + +/* + 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_); +} + +/* + 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 (); + + 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)) + { + 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 (); + } + } + + /* 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); + + // TODO: scrap Context::implementation + new_context->implementation_ = g; + + g->connect_to_context (new_context); + g->unprotect (); + + recurse_over_translators (new_context, + &Translator::initialize, + &Translator_group::initialize, + DOWN); +} + +IMPLEMENT_LISTENER (Translator_group, eat_event); +void +Translator_group::eat_event (SCM sev) +{ + Stream_event *ev = unsmob_stream_event (sev); + SCM sm = ev->get_property ("music"); + Music *m = unsmob_music (sm); + try_music (m); +} + bool -Translator_group::try_music (Music* m) +Translator_group::try_music (Music *m) { - SCM tab = get_property ("acceptHashTable"); SCM name = scm_sloppy_assq (ly_symbol2scm ("name"), m->get_property_alist (false)); @@ -78,24 +241,36 @@ Translator_group::try_music (Music* m) return false; name = scm_cdr (name); - SCM accept_list = scm_hashq_ref (tab, name, SCM_UNDEFINED); + SCM accept_list = scm_hashq_ref (accept_hash_table_, name, SCM_UNDEFINED); if (accept_list == SCM_BOOL_F) { accept_list = find_accept_translators (get_simple_trans_list (), m->get_property ("types")); - scm_hashq_set_x (tab, name, accept_list); + scm_hashq_set_x (accept_hash_table_, name, accept_list); } for (SCM p = accept_list; scm_is_pair (p); p = scm_cdr (p)) { - Translator * t = unsmob_translator (scm_car (p)); + Translator *t = unsmob_translator (scm_car (p)); if (t && t->try_music (m)) return true; } + + // 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); + // 'junking event' warning is temporarily disabled during translator cleanup + /* + else + // We have tried all possible contexts. Give up. + m->origin ()->warning (_f ("junking event: `%s'", m->name ())); + */ return false; } - SCM Translator_group::get_simple_trans_list () { @@ -103,45 +278,139 @@ Translator_group::get_simple_trans_list () } void -recurse_over_translators (Context * c, Translator_method ptr, Direction dir) +precomputed_recurse_over_translators (Context *c, Translator_precompute_index idx, Direction dir) { - Translator_group * tg - = dynamic_cast (c->implementation ()); + Translator_group *tg + = dynamic_cast (c->implementation ()); - - /* - Top down: - */ if (dir == DOWN) { - translator_each (tg->get_simple_trans_list (), - ptr); + tg->precomputed_translator_foreach (idx); + tg->call_precomputed_self_method (idx); + } + + 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); - (tg->*ptr) (); + if (dir == UP) + { + tg->precomputed_translator_foreach (idx); + tg->call_precomputed_self_method (idx); } +} - for (SCM s = c->children_contexts () ; scm_is_pair (s); - s =scm_cdr (s)) +void +recurse_over_translators (Context *c, Translator_method ptr, Translator_group_method tg_ptr, Direction dir) +{ + Translator_group *tg + = dynamic_cast (c->implementation ()); + + if (dir == DOWN) { - recurse_over_translators (unsmob_context (scm_car (s)), ptr, dir); + (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); + ptr); - (tg->*ptr) (); + (tg->*tg_ptr) (); } } -Translator_group::Translator_group() +Translator_group::Translator_group () { simple_trans_list_ = SCM_EOL; + accept_hash_table_ = SCM_EOL; + protected_events_ = SCM_EOL; + context_ = 0; + smobify_self (); + + accept_hash_table_ = scm_c_make_hash_table (19); } void Translator_group::derived_mark () const { - scm_gc_mark (simple_trans_list_); +} + +void +Translator_group::precompute_method_bindings () +{ + for (SCM s = simple_trans_list_; scm_is_pair (s); s = scm_cdr (s)) + { + 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++) + { + if (ptrs[i]) + precomputed_method_bindings_[i].push_back (Translator_method_binding (tr, ptrs[i])); + } + } + + fetch_precomputable_methods (precomputed_self_method_bindings_); +} + +void +Translator_group::precomputed_translator_foreach (Translator_precompute_index idx) +{ + vector &bindings (precomputed_method_bindings_[idx]); + for (vsize i = 0; i < bindings.size (); i++) + bindings[i].invoke (); +} + +void +Translator_group::fetch_precomputable_methods (Translator_group_void_method ptrs[]) +{ + for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++) + ptrs[i] = 0; +} + +void +Translator_group::call_precomputed_self_method (Translator_precompute_index idx) +{ + if (precomputed_self_method_bindings_[idx]) + (*precomputed_self_method_bindings_[idx]) (this); +} + +Translator_group::~Translator_group () +{ +} + +#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 *) +{ + 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 +Translator_group::mark_smob (SCM smob) +{ + Translator_group *me = (Translator_group *)SCM_CELL_WORD_1 (smob); + + me->derived_mark (); + scm_gc_mark (me->accept_hash_table_); + scm_gc_mark (me->protected_events_); + return me->simple_trans_list_; }