2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2001--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
5 Erik Sandberg <mandolaerik@gmail.com>
7 LilyPond is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 LilyPond is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
23 #include "repeated-music.hh"
24 #include "sequential-iterator.hh"
25 #include "lily-imports.hh"
27 class Percent_repeat_iterator : public Sequential_iterator
30 DECLARE_CLASSNAME (Percent_repeat_iterator);
31 DECLARE_SCHEME_CALLBACK (constructor, ());
32 Percent_repeat_iterator ();
34 virtual SCM get_music_list () const;
35 virtual void construct_children ();
36 virtual void next_element (bool);
37 virtual void derived_mark () const;
43 IMPLEMENT_CTOR_CALLBACK (Percent_repeat_iterator);
45 Percent_repeat_iterator::Percent_repeat_iterator ()
46 : child_list_ (SCM_UNDEFINED), starting_bar_ (-1)
51 Percent_repeat_iterator::derived_mark () const
53 scm_gc_mark (child_list_);
57 Percent_repeat_iterator::construct_children ()
59 Music *mus = get_music ();
61 Music *child = Repeated_music::body (mus);
62 child_list_ = scm_list_1 (child->self_scm ());
64 Sequential_iterator::construct_children ();
66 descend_to_bottom_context ();
67 if (!measure_position (get_outlet ()).main_part_)
69 robust_scm2int (get_outlet ()->get_property ("internalBarNumber"), 0);
73 Percent_repeat_iterator::get_music_list () const
78 // Arrive here when child processing has been completed. At that
79 // point of time, we can determine what kind of percent expression we
80 // are dealing with and extend the child list just in time before the
81 // next iterator is getting fetched.
83 Percent_repeat_iterator::next_element (bool side_effect)
85 // Do nothing if we already did our processing here.
86 if (!scm_is_pair (child_list_))
88 Sequential_iterator::next_element (side_effect);
92 Music *mus = get_music ();
94 Music *child = Repeated_music::body (mus);
95 SCM length = child->get_length ().smobbed_copy ();
98 if (!measure_position (get_outlet ()).main_part_)
100 robust_scm2int (get_outlet ()->get_property ("internalBarNumber"), 0);
102 SCM child_list = SCM_EOL;
105 SCM slash_count = SCM_EOL;
107 if (starting_bar_ >= 0 && current_bar == starting_bar_ + 1)
108 event_type = "PercentEvent";
109 else if (starting_bar_ >=0 && current_bar == starting_bar_ + 2)
110 event_type = "DoublePercentEvent";
113 slash_count = Lily::calc_repeat_slash_count (child->self_scm ());
114 event_type = "RepeatSlashEvent";
117 int repeats = scm_to_int (mus->get_property ("repeat-count"));
118 for (int i = repeats; i > 1; i--)
120 Music *percent = make_music_by_name (ly_symbol2scm (event_type.c_str ()));
121 percent->set_spot (*mus->origin ());
122 percent->set_property ("length", length);
125 percent->set_property ("repeat-count", scm_from_int (i));
126 if (event_type == "RepeatSlashEvent")
127 percent->set_property ("slash-count", slash_count);
130 child_list = scm_cons (percent->unprotect (), child_list);
133 scm_set_cdr_x (child_list_, child_list);
134 child_list_ = SCM_EOL;
136 Sequential_iterator::next_element (side_effect);