X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fglobal-context.cc;h=5e940a670d161959d191fbe133f4bbc211b6cbe3;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=6e2d26a58a2fceb00cafeb3cb767b5c16f88395f;hpb=2a8dcc4faa8a16229774d3414eedbf46feceac84;p=lilypond.git diff --git a/lily/global-context.cc b/lily/global-context.cc index 6e2d26a58a..5e940a670d 100644 --- a/lily/global-context.cc +++ b/lily/global-context.cc @@ -1,9 +1,20 @@ /* - global-context.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--2015 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 "global-context.hh" @@ -12,31 +23,37 @@ using namespace std; #include "context-def.hh" +#include "dispatcher.hh" #include "international.hh" -#include "lilypond-key.hh" #include "music-iterator.hh" #include "music.hh" #include "output-def.hh" -#include "score-context.hh" #include "warn.hh" -Global_context::Global_context (Output_def *o, Moment final, Object_key *key) - : Context (new Lilypond_context_key (key, - Moment (0), - "Global", "", 0)) +Global_context::Global_context (Output_def *o) + : Context () { output_def_ = o; - final_mom_ = final; definition_ = find_context_def (o, ly_symbol2scm ("Global")); - unique_count_ = 0; - unique_ = 0; - Context_def *globaldef = unsmob_context_def (definition_); + 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 = Context_def::unsmob (definition_); if (!globaldef) programming_error ("no `Global' context found"); else globaldef->apply_default_property_operations (this); - accepts_list_ = scm_list_1 (ly_symbol2scm ("Score")); + + default_child_ = ly_symbol2scm ("Score"); + accepts_list_ = scm_list_1 (default_child_); } Output_def * @@ -48,9 +65,6 @@ 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"); @@ -74,15 +88,20 @@ 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 = Stream_event::unsmob (sev); + Moment *mom = Moment::unsmob (ev->get_property ("moment")); - clear_key_disambiguations (); - 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 @@ -91,40 +110,30 @@ Global_context::now_mom () const return now_mom_; } -Score_context * +Context * Global_context::get_score_context () const { return (scm_is_pair (context_list_)) - ? dynamic_cast (unsmob_context (scm_car (context_list_))) - : 0; + ? Context::unsmob (scm_car (context_list_)) + : 0; } 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) { - 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 ()) @@ -132,43 +141,37 @@ 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. - */ - first = false; - set_property ("measurePosition", w.smobbed_copy ()); - } + { + /* + 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 sym = ly_symbol2scm ("Score"); - Context_def *t = unsmob_context_def (find_context_def (get_output_def (), - sym)); - if (!t) - error (_f ("can't find `%s' context", "Score")); + iter->process (w); - Object_key const *key = get_context_key ("Score", ""); - Context *c = t->instantiate (SCM_EOL, key); - add_context (c); - - Score_context *sc = dynamic_cast (c); - sc->prepare (w); - } - - one_time_step (); + send_stream_event (this, "OneTimeStep", 0, 0); + apply_finalizations (); + check_removal (); } } @@ -178,9 +181,7 @@ Global_context::apply_finalizations () SCM lst = get_property ("finalizations"); 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)); + scm_apply_0 (scm_caar (s), scm_cdar (s)); } /* Add a function to execute before stepping to the next time step. */ @@ -199,16 +200,10 @@ Global_context::previous_moment () const } Context * -Global_context::get_default_interpreter () +Global_context::get_default_interpreter (const string &/* context_id */) { if (get_score_context ()) return get_score_context ()->get_default_interpreter (); else return Context::get_default_interpreter (); } - -int -Global_context::new_unique () -{ - return ++unique_count_; -}