X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fengraver.cc;h=59c91306ef39496f5f729273686c0d58def2ab68;hb=dea413b36a5c2ba9b01dcab3fa764fa5ab9f8418;hp=0d3f2a67f83c82f751dac14a1d11481851d899aa;hpb=df4a7c4a55148e065d878dcc2f7e09ac27ea9c32;p=lilypond.git diff --git a/lily/engraver.cc b/lily/engraver.cc index 0d3f2a67f8..59c91306ef 100644 --- a/lily/engraver.cc +++ b/lily/engraver.cc @@ -1,56 +1,175 @@ /* - engraver.cc -- implement Engraver + This file is part of LilyPond, the GNU music typesetter. - Sourcefile of GNU LilyPond music type setter + Copyright (C) 1997--2015 Han-Wen Nienhuys - (c) 1997--2000 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 "music.hh" #include "engraver.hh" -#include "engraver-group-engraver.hh" -#include "grob.hh" +#include "context.hh" +#include "grob-properties.hh" +#include "international.hh" +#include "music.hh" +#include "paper-column.hh" +#include "score-engraver.hh" +#include "spanner.hh" +#include "stream-event.hh" +#include "warn.hh" + +Engraver_group * +Engraver::get_daddy_engraver () const +{ + return dynamic_cast (get_daddy_translator ()); +} void -Engraver::announce_grob (Grob_info inf) +Engraver::announce_grob (Grob_info inf, Context *reroute_context) { - daddy_grav_l()->announce_grob (inf); + get_daddy_engraver ()->announce_grob (inf, START, reroute_context); } void -Engraver::announce_grob (Grob* e, Music *m) +Engraver::announce_end_grob (Grob_info inf, Context *reroute_context) { - if (m && m->origin ()->location_str ().length_i ()) + get_daddy_engraver ()->announce_grob (inf, STOP, reroute_context); +} + +Grob_info +Engraver::make_grob_info (Grob *e, SCM cause) +{ + /* TODO: Remove Music code when it's no longer needed */ + if (Music *m = unsmob (cause)) { - e->set_grob_property ("origin", m->get_mus_property ("origin")); + cause = m->to_event ()->unprotect (); } - - Grob_info i (e, m); - if (!i.origin_trans_l_) - i.origin_trans_l_ = this; - daddy_grav_l()->announce_grob (i); + if (scm_is_null (e->get_property ("cause")) + && (unsmob (cause) || unsmob (cause))) + e->set_property ("cause", cause); + + return Grob_info (this, e); } +/* + CAUSE is the object (typically a Stream_event object) that + was the reason for making E. +*/ +void +Engraver::announce_grob (Grob *e, SCM cause) +{ + announce_grob (make_grob_info (e, cause)); +} - +/* + CAUSE is the object (typically a grob or stream-event object) that + was the reason for ending E. */ void -Engraver::typeset_grob (Grob*p) +Engraver::announce_end_grob (Grob *e, SCM cause) { - daddy_grav_l()->typeset_grob (p); + announce_end_grob (make_grob_info (e, cause)); } +Engraver::Engraver (Context *c) + : Translator (c) +{ +} -Engraver_group_engraver* -Engraver::daddy_grav_l () const +#ifdef DEBUG +static SCM creation_callback = SCM_EOL; +LY_DEFINE (ly_set_grob_creation_callback, "ly:set-grob-creation-callback", + 1, 0, 0, (SCM cb), + "Specify a procedure that will be called every time a new grob" + " is created. The callback will receive as arguments the grob" + " that was created, the name of the C++ source file that caused" + " the grob to be created, and the corresponding line number in" + " the C++ source file.") { - return (daddy_trans_l_ ) - ? dynamic_cast (daddy_trans_l_) - : 0; + LY_ASSERT_TYPE (ly_is_procedure, cb, 1); + + creation_callback = cb; + + return SCM_UNSPECIFIED; } +#endif -void -Engraver::process_music () +Grob * +Engraver::internal_make_grob (SCM symbol, + SCM cause, + char const *file, + int line, + char const *fun) +{ +#ifndef DEBUG + (void)file; + (void)line; + (void)fun; +#endif + + SCM props = Grob_property_info (context (), symbol).updated (); + + Grob *grob = 0; + + SCM handle = scm_sloppy_assq (ly_symbol2scm ("meta"), props); + SCM klass = scm_cdr (scm_sloppy_assq (ly_symbol2scm ("class"), scm_cdr (handle))); + + if (scm_is_eq (klass, ly_symbol2scm ("Item"))) + grob = new Item (props); + else if (scm_is_eq (klass, ly_symbol2scm ("Spanner"))) + grob = new Spanner (props); + else if (scm_is_eq (klass, ly_symbol2scm ("Paper_column"))) + grob = new Paper_column (props); + + assert (grob); + announce_grob (grob, cause); + +#ifdef DEBUG + if (ly_is_procedure (creation_callback)) + scm_call_4 (creation_callback, + grob->self_scm (), scm_from_utf8_string (file), + scm_from_int (line), scm_from_ascii_string (fun)); +#endif + + return grob; +} + +Item * +Engraver::internal_make_item (SCM x, SCM cause, + char const *file, int line, char const *fun) +{ + Item *it = dynamic_cast (internal_make_grob (x, cause, file, line, fun)); + assert (it); + return it; +} + +Paper_column * +Engraver::internal_make_column (SCM x, char const *file, int line, char const *fun) +{ + return dynamic_cast (internal_make_grob (x, SCM_EOL, file, line, fun)); +} + +Spanner * +Engraver::internal_make_spanner (SCM x, SCM cause, + char const *file, int line, char const *fun) +{ + Spanner *sp = dynamic_cast (internal_make_grob (x, cause, file, line, fun)); + assert (sp); + return sp; +} + +bool +ly_is_grob_cause (SCM obj) { - + return unsmob (obj) || unsmob (obj) || scm_is_null (obj); }