X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftranslator.cc;h=399ecce602e57f3323bc3ebf0cf1072337c5bc41;hb=ddd59edaae68e71d5d3ea2576b3d0d25807fb500;hp=d90c8be045b4b3526ab778e5d54862037171469e;hpb=5f2a9e631fb2415fe1c97d372243de90b6807917;p=lilypond.git diff --git a/lily/translator.cc b/lily/translator.cc index d90c8be045..399ecce602 100644 --- a/lily/translator.cc +++ b/lily/translator.cc @@ -1,9 +1,20 @@ /* - translator.cc -- implement Translator + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1997--2009 Han-Wen Nienhuys - (c) 1997--2006 Han-Wen Nienhuys + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . */ #include "translator.hh" @@ -25,7 +36,6 @@ Translator::~Translator () void Translator::init () { - must_be_last_ = false; self_scm_ = SCM_EOL; daddy_context_ = 0; smobify_self (); @@ -48,8 +58,8 @@ Translator::Translator () Translator::Translator (Translator const &src) { + (void) src; init (); - must_be_last_ = src.must_be_last_; } Moment @@ -110,15 +120,17 @@ Translator::finalize () void Translator::connect_to_context (Context *c) { - for (translator_listener_record *r = get_listener_list (); r; r=r->next_) - c->events_below ()->add_listener (r->get_listener_ (this), r->event_class_); + for (translator_listener_record *r = get_listener_list (); r; r = r->next_) + c->events_below ()->add_listener (r->get_listener_ (this, r->event_class_), + 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_); + for (translator_listener_record *r = get_listener_list (); r; r = r->next_) + c->events_below ()->remove_listener (r->get_listener_ (this, r->event_class_), + r->event_class_); } static SCM listened_event_class_table; @@ -132,7 +144,8 @@ ensure_listened_hash () 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.") + "Return a list of all event classes that some translator listens" + " to.") { ensure_listened_hash (); return ly_hash_table_keys (listened_event_class_table); @@ -165,12 +178,12 @@ add_listened_event_class (SCM sym) void Translator::add_translator_listener (translator_listener_record **listener_list, translator_listener_record *r, - Listener (*get_listener) (void *), + Listener (*get_listener) (void *, SCM), const char *ev_class) { /* ev_class is the C++ identifier name. Convert to scm symbol */ string name = string (ev_class); - name = replace_all (name, '_', '-'); + name = replace_all (&name, '_', '-'); name += "-event"; SCM class_sym = scm_str2symbol (name.c_str ()); @@ -184,19 +197,38 @@ Translator::add_translator_listener (translator_listener_record **listener_list, } /* - Used by ADD_THIS_TRANSLATOR to extract a list of event-class names - for each translator. This list is used by the internals - documentation. + Helps the individual static_translator_description methods of translators. */ SCM -Translator::get_listened_class_list (const translator_listener_record *listeners) const +Translator::static_translator_description (const char *grobs, + const char *desc, + translator_listener_record *listener_list, + const char *read, + const char *write) const { + SCM static_properties = SCM_EOL; + + static_properties = scm_acons (ly_symbol2scm ("grobs-created"), + parse_symbol_list (grobs), static_properties); + + static_properties = scm_acons (ly_symbol2scm ("description"), + scm_from_locale_string (desc), static_properties); + SCM list = SCM_EOL; - for (; listeners; listeners = listeners->next_) - list = scm_cons (listeners->event_class_, list); - return list; + for (; listener_list; listener_list = listener_list->next_) + list = scm_cons (listener_list->event_class_, list); + static_properties = scm_acons (ly_symbol2scm ("events-accepted"), + list, static_properties); + + static_properties = scm_acons (ly_symbol2scm ("properties-read"), + parse_symbol_list (read), static_properties); + + static_properties = scm_acons (ly_symbol2scm ("properties-written"), + parse_symbol_list (write), static_properties); + + return static_properties; } - + /* SMOBS */ @@ -227,7 +259,7 @@ IMPLEMENT_TYPE_P (Translator, "ly:translator?"); bool Translator::must_be_last () const { - return must_be_last_; + return false; } void @@ -255,11 +287,11 @@ add_acknowledger (Engraver_void_function_engraver_grob_info ptr, string interface_name (func_name); - interface_name = replace_all (interface_name, '_', '-'); + interface_name = replace_all (&interface_name, '_', '-'); interface_name += "-interface"; /* - this is only called during program init, so safe to use scm_gc_protect_object() + this is only called during program init, so safe to use scm_gc_protect_object () */ inf.symbol_ = scm_gc_protect_object (ly_symbol2scm (interface_name.c_str ())); ack_array->push_back (inf); @@ -276,6 +308,7 @@ generic_get_acknowledger (SCM sym, vector const *ack_ar return 0; } + Moment get_event_length (Stream_event *e) { @@ -286,6 +319,19 @@ get_event_length (Stream_event *e) return Moment (0); } +Moment +get_event_length (Stream_event *e, Moment now) +{ + Moment len = get_event_length (e); + + if (now.grace_part_) + { + len.grace_part_ = len.main_part_; + len.main_part_ = Rational (0); + } + return len; +} + /* Helper, used through ASSIGN_EVENT_ONCE to throw warnings for simultaneous events. The helper is only useful in listen_* methods @@ -294,18 +340,21 @@ get_event_length (Stream_event *e) bool internal_event_assignment (Stream_event **old_ev, Stream_event *new_ev, const char *function) { - if (*old_ev) + if (*old_ev && + !to_boolean (scm_equal_p ((*old_ev)->self_scm (), + new_ev->self_scm ()))) { /* extract event class from function name */ - const char *prefix = "listen_"; string ev_class = function; + /* This assertion fails if EVENT_ASSIGNMENT was called outside a translator listener. Don't do that. */ + const char *prefix = "listen_"; assert (0 == ev_class.find (prefix)); /* "listen_foo_bar" -> "foo-bar" */ - ev_class.erase (0, strlen(prefix)); - replace_all (ev_class, '_', '-'); + ev_class.erase (0, strlen (prefix)); + replace_all (&ev_class, '_', '-'); new_ev->origin ()->warning (_f ("Two simultaneous %s events, junking this one", ev_class.c_str ())); (*old_ev)->origin ()->warning (_f ("Previous %s event here", ev_class.c_str ())); @@ -319,8 +368,15 @@ internal_event_assignment (Stream_event **old_ev, Stream_event *new_ev, const ch } ADD_TRANSLATOR (Translator, - "Base class. Unused", - "", + /* doc */ + "Base class. Not instantiated.", + + /* create */ "", + + /* read */ "", - ""); + + /* write */ + "" + );