X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fglobal-context.cc;h=8f22b943effe787d69033023ce8196d99486cafb;hb=85d4958c021936c64b6ef9d514a6a2b0d269cc58;hp=dbb66d10ef001357461fdbe67cad5acc28889c31;hpb=ed2f7473be57e99f15acc48c06fe18fed27d43b3;p=lilypond.git diff --git a/lily/global-context.cc b/lily/global-context.cc index dbb66d10ef..8f22b943ef 100644 --- a/lily/global-context.cc +++ b/lily/global-context.cc @@ -1,33 +1,68 @@ /* - global-translator.cc -- implement global_context + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1997--2012 Han-Wen Nienhuys - (c) 1997--2004 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 -#include "warn.hh" -#include "music.hh" -#include "event.hh" -#include "music-list.hh" -#include "music-iterator.hh" #include "global-context.hh" -#include "score-context.hh" + +#include +using namespace std; + #include "context-def.hh" -#include "music-output-def.hh" -#include "grace-fixup.hh" +#include "dispatcher.hh" +#include "international.hh" +#include "music-iterator.hh" +#include "music.hh" +#include "output-def.hh" +#include "warn.hh" -Global_context::Global_context (Music_output_def *o, Moment final) +Global_context::Global_context (Output_def *o) + : Context () { output_def_ = o; - final_mom_ = final; - definition_ = o->find_context_def (ly_symbol2scm ("Global")); - unsmob_context_def (definition_)->apply_default_property_operations (this); - accepts_list_ = scm_list_1 (ly_symbol2scm ("Score")); + definition_ = find_context_def (o, ly_symbol2scm ("Global")); + + now_mom_.set_infinite (-1); + prev_mom_.set_infinite (-1); + + /* We only need the most basic stuff to bootstrap the context tree */ + event_source ()->add_listener (GET_LISTENER (create_context_from_event), + ly_symbol2scm ("CreateContext")); + event_source ()->add_listener (GET_LISTENER (prepare), + ly_symbol2scm ("Prepare")); + events_below ()->register_as_listener (event_source_); + + Context_def *globaldef = unsmob_context_def (definition_); + if (!globaldef) + programming_error ("no `Global' context found"); + else + globaldef->apply_default_property_operations (this); + + SCM p = get_property ("EventClasses"); + + ancestor_lookup_ = scm_make_hash_table (scm_length (p)); + for (; scm_is_pair (p); p = scm_cdr (p)) + scm_hashq_set_x (ancestor_lookup_, scm_caar (p), scm_car (p)); + + default_child_ = ly_symbol2scm ("Score"); + accepts_list_ = scm_list_1 (default_child_); } -Music_output_def* +Output_def * Global_context::get_output_def () const { return output_def_; @@ -36,13 +71,10 @@ Global_context::get_output_def () const void Global_context::add_moment_to_process (Moment m) { - if (m > final_mom_) - return; - if (m < now_mom_) - programming_error ("Trying to freeze in time."); - - for (int i=0; i < extra_mom_pq_.size (); i++) + programming_error ("trying to freeze in time"); + + for (vsize i = 0; i < extra_mom_pq_.size (); i++) if (extra_mom_pq_[i] == m) return; extra_mom_pq_.insert (m); @@ -62,14 +94,20 @@ Global_context::get_moments_left () const return extra_mom_pq_.size (); } +IMPLEMENT_LISTENER (Global_context, prepare); void -Global_context::prepare (Moment m) +Global_context::prepare (SCM sev) { - prev_mom_ = now_mom_; - now_mom_ = m; + Stream_event *ev = unsmob_stream_event (sev); + Moment *mom = unsmob_moment (ev->get_property ("moment")); - if (get_score_context ()) - get_score_context ()->prepare (m); + assert (mom); + + if (prev_mom_.main_part_.is_infinity () && prev_mom_ < 0) + prev_mom_ = *mom; + else + prev_mom_ = now_mom_; + now_mom_ = *mom; } Moment @@ -78,40 +116,30 @@ Global_context::now_mom () const return now_mom_; } -Score_context* +Context * Global_context::get_score_context () const { - return (gh_pair_p (context_list_)) - ? dynamic_cast (unsmob_context (gh_car (context_list_))) - : 0; + return (scm_is_pair (context_list_)) + ? unsmob_context (scm_car (context_list_)) + : 0; } -Music_output* +SCM Global_context::get_output () { - return get_score_context ()->get_output (); -} - -void -Global_context::one_time_step () -{ - get_score_context ()->one_time_step (); - apply_finalizations (); - check_removal (); -} - -void -Global_context::finish () -{ - if (get_score_context ()) - get_score_context ()->finish (); + Context *c = get_score_context (); + if (c) + return c->get_property ("output"); + else + return SCM_EOL; } void -Global_context::run_iterator_on_me (Music_iterator * iter) +Global_context::run_iterator_on_me (Music_iterator *iter) { - if (iter-> ok ()) - prev_mom_ = now_mom_ = iter->pending_moment (); + prev_mom_.set_infinite (-1); + now_mom_.set_infinite (-1); + Moment final_mom = iter->get_music ()->get_length (); bool first = true; while (iter->ok () || get_moments_left ()) @@ -119,45 +147,37 @@ Global_context::run_iterator_on_me (Music_iterator * iter) Moment w; w.set_infinite (1); if (iter->ok ()) - { - w = iter->pending_moment (); - } + w = iter->pending_moment (); w = sneaky_insert_extra_moment (w); - if (w.main_part_.is_infinity ()) - break ; - + if (w.main_part_.is_infinity () || w > final_mom) + break; + + if (w == prev_mom_) + { + programming_error ("Moment is not increasing." + " Aborting interpretation."); + break; + } + if (first) { - /* - Need this to get grace notes at start of a piece correct. - */ + /* + Need this to get grace notes at start of a piece correct. + */ first = false; set_property ("measurePosition", w.smobbed_copy ()); } - - prepare (w); + send_stream_event (this, "Prepare", 0, + ly_symbol2scm ("moment"), w.smobbed_copy ()); if (iter->ok ()) - iter->process (w); - - if (!get_score_context ()) - { - SCM key = ly_symbol2scm ("Score"); - Context_def * t = unsmob_context_def (get_output_def () - ->find_context_def (key)); - if (!t) - error (_f ("can't find `%s' context", "Score")); - - Context *c = t->instantiate (SCM_EOL); - add_context (c); - - Score_context *sc = dynamic_cast (c); - sc->prepare (w); - } - - one_time_step (); + iter->process (w); + + send_stream_event (this, "OneTimeStep", 0, 0); + apply_finalizations (); + check_removal (); } } @@ -165,22 +185,20 @@ void Global_context::apply_finalizations () { SCM lst = get_property ("finalizations"); - set_property ("finalizations" , SCM_EOL); - for (SCM s = lst ; gh_pair_p (s); s = gh_cdr (s)) - { - scm_primitive_eval (gh_car (s)); // TODO: make safe. - } + set_property ("finalizations", SCM_EOL); + for (SCM s = lst; scm_is_pair (s); s = scm_cdr (s)) + + /* TODO: make safe. */ + scm_primitive_eval (scm_car (s)); } -/* - Add a function to execute before stepping to the next time step. -*/ +/* Add a function to execute before stepping to the next time step. */ void Global_context::add_finalization (SCM x) { SCM lst = get_property ("finalizations"); lst = scm_cons (x, lst); - set_property ("finalizations" ,lst); + set_property ("finalizations", lst); } Moment @@ -190,10 +208,16 @@ Global_context::previous_moment () const } Context * -Global_context::get_default_interpreter () +Global_context::get_default_interpreter (string /* context_id */) { if (get_score_context ()) return get_score_context ()->get_default_interpreter (); else return Context::get_default_interpreter (); } + +Global_context * +unsmob_global_context (SCM x) +{ + return dynamic_cast (unsmob_context (x)); +}