X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fengraver.cc;h=ac085bd296e17c21a5538c40da1928122b0aad14;hb=9e781b7dc83b60a543ce218aa1a5f139f74c760f;hp=ac74d5e93064f9c808dccf6358fc95fae9465cc3;hpb=87eedcd59f4082cb0841528ad5bc82cb1d1191e3;p=lilypond.git diff --git a/lily/engraver.cc b/lily/engraver.cc index ac74d5e930..ac085bd296 100644 --- a/lily/engraver.cc +++ b/lily/engraver.cc @@ -1,9 +1,20 @@ /* - engraver.cc -- implement Engraver + This file is part of LilyPond, the GNU music typesetter. - Sourcefile of GNU LilyPond music type setter + Copyright (C) 1997--2014 Han-Wen Nienhuys - (c) 1997--2007 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 "engraver.hh" @@ -32,55 +43,43 @@ Engraver::announce_grob (Grob_info inf) void Engraver::announce_end_grob (Grob_info inf) { + inf.start_end_ = STOP; get_daddy_engraver ()->announce_grob (inf); } -/* - CAUSE is the object (typically a Stream_event object) that - was the reason for making E. -*/ -void -Engraver::announce_grob (Grob *e, SCM cause) +Grob_info +Engraver::make_grob_info (Grob *e, SCM cause) { /* TODO: Remove Music code when it's no longer needed */ if (Music *m = unsmob_music (cause)) { cause = m->to_event ()->unprotect (); } - if (unsmob_stream_event (cause) || unsmob_grob (cause)) + if (e->get_property ("cause") == SCM_EOL + && (unsmob_stream_event (cause) || unsmob_grob (cause))) e->set_property ("cause", cause); - Grob_info i (this, e); - - Engraver_group *g = get_daddy_engraver (); - if (g) - g->announce_grob (i); + return Grob_info (this, e); } - /* - CAUSE is the object (typically a Music object) that + CAUSE is the object (typically a Stream_event object) that was the reason for making E. */ void -Engraver::announce_end_grob (Grob *e, SCM cause) +Engraver::announce_grob (Grob *e, SCM cause) { - /* TODO: Remove Music code when it's no longer needed */ - if (Music *m = unsmob_music (cause)) - { - cause = m->to_event ()->unprotect (); - } - if (unsmob_stream_event (cause) || unsmob_grob (cause)) - e->set_property ("cause", cause); - - Grob_info i (this, e); - - i.start_end_ = STOP; - Engraver_group *g = get_daddy_engraver (); - if (g) - g->announce_grob (i); + 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::announce_end_grob (Grob *e, SCM cause) +{ + announce_end_grob (make_grob_info (e, cause)); +} Engraver::Engraver () { @@ -89,15 +88,14 @@ Engraver::Engraver () #ifndef NDEBUG 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.") + 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.") { - SCM_ASSERT_TYPE(ly_is_procedure (cb), cb, SCM_ARG1, __FUNCTION__, - "procedure"); + LY_ASSERT_TYPE (ly_is_procedure, cb, 1); creation_callback = cb; @@ -106,13 +104,19 @@ LY_DEFINE (ly_set_grob_creation_callback, "ly:set-grob-creation-callback", #endif Grob * -Engraver::internal_make_grob (SCM symbol, SCM cause, char const *name, char const *file, int line, char const *fun) +Engraver::internal_make_grob (SCM symbol, + SCM cause, + char const * /* name */, + char const *file, + int line, + char const *fun) { - (void) file; - (void) fun; - (void) line; - (void) name; - +#ifdef NDEBUG + (void)file; + (void)line; + (void)fun; +#endif + SCM props = updated_grob_properties (context (), symbol); Grob *grob = 0; @@ -133,8 +137,8 @@ Engraver::internal_make_grob (SCM symbol, SCM cause, char const *name, char cons #ifndef NDEBUG if (ly_is_procedure (creation_callback)) scm_apply_0 (creation_callback, - scm_list_n (grob->self_scm (), scm_from_locale_string (file), - scm_from_int (line), scm_from_locale_string (fun), SCM_UNDEFINED)); + scm_list_n (grob->self_scm (), scm_from_locale_string (file), + scm_from_int (line), scm_from_locale_string (fun), SCM_UNDEFINED)); #endif return grob; @@ -142,8 +146,8 @@ Engraver::internal_make_grob (SCM symbol, SCM cause, char const *name, char cons Item * Engraver::internal_make_item (SCM x, SCM cause, - char const *name, - char const *file, int line, char const *fun) + char const *name, + char const *file, int line, char const *fun) { Item *it = dynamic_cast (internal_make_grob (x, cause, name, file, line, fun)); assert (it); @@ -152,24 +156,45 @@ Engraver::internal_make_item (SCM x, SCM cause, Paper_column * Engraver::internal_make_column (SCM x, char const *name, - char const *file, int line, char const *fun) + char const *file, int line, char const *fun) { return dynamic_cast (internal_make_grob (x, SCM_EOL, name, file, line, fun)); } Spanner * -Engraver::internal_make_spanner (SCM x, SCM cause, char const *name, char const *file, int line, char const *fun) +Engraver::internal_make_spanner (SCM x, SCM cause, char const *name, + char const *file, int line, char const *fun) { Spanner *sp = dynamic_cast (internal_make_grob (x, cause, name, file, line, fun)); assert (sp); return sp; } +Engraver * +unsmob_engraver (SCM eng) +{ + return dynamic_cast (unsmob_translator (eng)); +} + +bool +ly_is_grob_cause (SCM obj) +{ + return unsmob_grob (obj) || unsmob_stream_event (obj) || (obj == SCM_EOL); +} + #include "translator.icc" ADD_TRANSLATOR (Engraver, - "Base class for engravers. Does nothing, so it is not used.", - "", - "", - ""); + /* doc */ + "Base class for engravers. Does nothing, so it is not used.", + + /* create */ + "", + + /* read */ + "", + + /* write */ + "" + );