X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftranslator.cc;h=e3c973ebbedfac96b2a5d0eb21b0a449e3455714;hb=20e46cadd3f9e5afb48cfabe50e725bdb6613a0b;hp=68db603831d8396abbec3acb0d4955e63980b68c;hpb=eae90c59e6fc5a916c6736d2ca56486b045768a5;p=lilypond.git diff --git a/lily/translator.cc b/lily/translator.cc index 68db603831..e3c973ebbe 100644 --- a/lily/translator.cc +++ b/lily/translator.cc @@ -3,199 +3,315 @@ source file of the GNU LilyPond music typesetter - (c) 1997--2000 Han-Wen Nienhuys + (c) 1997--2006 Han-Wen Nienhuys */ - #include "translator.hh" -#include "debug.hh" + +#include "context-def.hh" +#include "dispatcher.hh" +#include "global-context.hh" +#include "international.hh" #include "translator-group.hh" +#include "warn.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 () +{ + init (); +} + +Translator::Translator (Translator const &src) { - return s == type_str_; + 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::creation_processing () +Translator::start_translation_timestep () { - if (status >= CREATION_INITED) - return ; - - do_creation_processing (); - status = CREATION_INITED; } void -Translator::post_move_processing () +Translator::initialize () { - if (status >= MOVE_INITED) - return; +} - creation_processing (); - do_post_move_processing (); - status = MOVE_INITED; +void +Translator::finalize () +{ } void -Translator::removal_processing () +Translator::connect_to_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 ()->add_listener (r->get_listener_ (this), r->event_class_); } +void +Translator::disconnect_from_context (Context *c) +{ + for (translator_listener_record *r = get_listener_list (); r; r=r->next_) + c->events_below ()->remove_listener (r->get_listener_ (this), r->event_class_); +} -bool -Translator::try_music (Music * r) +static SCM listened_event_class_table; +void +ensure_listened_hash () { - if (status < MOVE_INITED) - post_move_processing (); + if (!listened_event_class_table) + listened_event_class_table = scm_permanent_object (scm_c_make_hash_table (61)); +} + - return do_try_music (r); +LY_DEFINE (ly_get_listened_event_classes, "ly:get-listened-event-classes", + 0, 0, 0, (), + "Returns a list of all event classes that some translator listens to.") +{ + ensure_listened_hash (); + return ly_hash_table_keys (listened_event_class_table); } -void -Translator::process_music () +LY_DEFINE (ly_is_listened_event_class, "ly:is-listened-event-class", + 1, 0, 0, (SCM sym), + "Is @var{sym} a listened event class?") { - if (status < PROCESSED_REQS) - post_move_processing (); - else if (status >= PROCESSED_REQS) - return; - - status = PROCESSED_REQS; - do_process_music (); + ensure_listened_hash (); + return scm_hashq_ref (listened_event_class_table, sym, SCM_BOOL_F); } void -Translator::pre_move_processing () +add_listened_event_class (SCM sym) { - do_pre_move_processing (); - status = CREATION_INITED; + ensure_listened_hash (); + + scm_hashq_set_x (listened_event_class_table, sym, SCM_BOOL_T); } +/* + internally called once, statically, for each translator + listener. Connects the name of an event class with a procedure that + fetches the corresponding listener. -Music_output_def * -Translator::output_def_l () const + 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) { - return output_def_l_; + /* ev_class is the C++ identifier name. Convert to scm symbol */ + string name = string (ev_class); + name = replace_all (name, '_', '-'); + name += "-event"; + + SCM class_sym = scm_str2symbol (name.c_str ()); + + add_listened_event_class (class_sym); + r->event_class_ = class_sym; + r->get_listener_ = get_listener; + r->next_ = *listener_list; + *listener_list = r; } +/* + SMOBS +*/ SCM -Translator::get_property (char const * id) const +Translator::mark_smob (SCM sm) { - return daddy_trans_l_->get_property (ly_symbol2scm (id)); + Translator *me = (Translator *) SCM_CELL_WORD_1 (sm); + me->derived_mark (); + return SCM_EOL; } -SCM -Translator::get_property (SCM sym) const +Global_context * +Translator::get_global_context () const { - return daddy_trans_l_->get_property (sym); + return daddy_context_->get_global_context (); } -void -Translator:: do_pre_move_processing () +Context * +Translator::get_score_context () const { + return daddy_context_->get_score_context (); } -void -Translator::do_post_move_processing () +IMPLEMENT_SMOBS (Translator); +IMPLEMENT_DEFAULT_EQUAL_P (Translator); +IMPLEMENT_TYPE_P (Translator, "ly:translator?"); + +bool +Translator::must_be_last () const { + return must_be_last_; } void -Translator::do_process_music () +Translator::derived_mark () const { } -void -Translator::do_creation_processing () +int +Translator::print_smob (SCM s, SCM port, scm_print_state *) { + Translator *me = (Translator *) SCM_CELL_WORD_1 (s); + scm_puts ("#class_name (), port); + scm_puts (" >", port); + return 1; } void -Translator::do_removal_processing () +add_acknowledger (Engraver_void_function_engraver_grob_info ptr, + char const *func_name, + vector *ack_array) { + Acknowledge_information inf; + inf.function_ = ptr; + + string interface_name (func_name); + + interface_name = replace_all (interface_name, '_', '-'); + interface_name += "-interface"; + + inf.symbol_ = ly_symbol2scm (interface_name.c_str ()); + ack_array->push_back (inf); } + +Engraver_void_function_engraver_grob_info +generic_get_acknowledger (SCM sym, vector 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); +} + +/* + Helper, used through ASSIGN_EVENT_ONCE to throw warnings for + simultaneous events. The helper is only useful in listen_* methods + of translators. +*/ +bool +internal_event_assignment (Stream_event **old_ev, Stream_event *new_ev, const char *function) +{ + if (*old_ev) + { + /* extract event class from function name */ + const char *prefix = "listen_"; + assert (!strncmp (function, "listen_", strlen (prefix))); + function += strlen (prefix); + char ev_class[strlen (function) + 1]; + strcpy (ev_class, function); + for (char *c = ev_class; *c; c++) + if (*c == '_') + *c = '-'; + + new_ev->origin ()->warning (_f ("Two simultaneous %s events, junking this one", ev_class)); + (*old_ev)->origin ()->warning (_f ("Previous %s event here", ev_class)); + return false; + } + else + { + *old_ev = new_ev; + return true; + } +} + +ADD_TRANSLATOR (Translator, + "Base class. Unused", + "", + "", + "", + "");