2 music.cc -- implement Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "input-smob.hh"
11 #include "music-list.hh"
13 #include "musical-pitch.hh"
14 #include "ly-smobs.icc"
17 ly_deep_mus_copy (SCM m)
21 SCM ss = unsmob_music (m)->clone ()->self_scm ();
22 scm_unprotect_object (ss);
25 else if (gh_pair_p (m))
27 return gh_cons (ly_deep_mus_copy (gh_car (m)), ly_deep_mus_copy (gh_cdr (m)));
34 Music::Music (Music const &m)
36 immutable_property_alist_ = m.immutable_property_alist_;
37 SCM c =ly_deep_mus_copy (m.mutable_property_alist_);
38 mutable_property_alist_ = c;
42 set_spot (*m.origin ());
48 immutable_property_alist_ = SCM_EOL;
49 mutable_property_alist_ = SCM_EOL;
54 Music::mark_smob (SCM m)
56 Music * mus = (Music *)SCM_CELL_WORD_1(m);
57 scm_gc_mark (mus->immutable_property_alist_);
58 scm_gc_mark (mus->mutable_property_alist_);
63 Music::compress (Moment)
70 Music::length_mom () const
72 SCM l = get_mus_property ("length");
73 if (unsmob_moment (l))
74 return *unsmob_moment(l);
75 else if (gh_procedure_p (l))
77 SCM res = gh_call1(l, self_scm( ));
78 return *unsmob_moment(res);
85 Music::print_smob(SCM s, SCM p, scm_print_state*)
87 scm_puts ("#<Music ", p);
88 scm_puts (classname(unsmob_music (s)),p);
94 Music::to_relative_octave (Musical_pitch m)
101 Music::transpose (Musical_pitch )
106 IMPLEMENT_UNSMOB(Music,music);
107 IMPLEMENT_SMOBS(Music);
108 IMPLEMENT_DEFAULT_EQUAL_P(Music);
110 /****************************/
113 Music::get_mus_property (const char *nm) const
115 SCM sym = ly_symbol2scm (nm);
116 return get_mus_property (sym);
120 Music::get_mus_property (SCM sym) const
122 SCM s = scm_sloppy_assq(sym, mutable_property_alist_);
126 s = scm_sloppy_assq (sym, immutable_property_alist_);
127 return (s == SCM_BOOL_F) ? SCM_EOL : gh_cdr (s);
131 Remove the value associated with KEY, and return it. The result is
132 that a next call will yield SCM_EOL (and not the underlying
136 Music::remove_mus_property (const char* key)
138 SCM val = get_mus_property (key);
140 set_mus_property (key, SCM_EOL);
145 Music::set_mus_property (const char* k, SCM v)
147 SCM s = ly_symbol2scm (k);
148 set_mus_property (s, v);
152 Music::set_immutable_mus_property (const char*k, SCM v)
154 SCM s = ly_symbol2scm (k);
155 set_immutable_mus_property (s, v);
159 Music::set_immutable_mus_property (SCM s, SCM v)
161 immutable_property_alist_ = gh_cons (gh_cons (s,v), mutable_property_alist_);
162 mutable_property_alist_ = scm_assq_remove_x (mutable_property_alist_, s);
165 Music::set_mus_property (SCM s, SCM v)
167 mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
171 Music::set_spot (Input ip)
173 set_mus_property ("origin", make_input (ip));
179 Music::origin () const
181 Input *ip = unsmob_input (get_mus_property ("origin"));
182 return ip ? ip : & dummy_input_global;
195 ly_get_mus_property (SCM mus, SCM sym)
197 Music * sc = unsmob_music (mus);
201 return sc->get_mus_property (sym);
205 warning (_("ly_get_mus_property (): Not a Music"));
206 scm_write (mus, scm_current_error_port ());
213 ly_set_mus_property (SCM mus, SCM sym, SCM val)
215 Music * sc = unsmob_music (mus);
217 if (!gh_symbol_p (sym))
219 warning (_("ly_set_mus_property (): Not a symbol"));
220 scm_write (mus, scm_current_error_port ());
222 return SCM_UNSPECIFIED;
227 sc->set_mus_property (sym, val);
231 warning (_("ly_set_mus_property (): not of type Music"));
232 scm_write (mus, scm_current_error_port ());
235 return SCM_UNSPECIFIED;
241 scm_make_gsubr ("ly-get-mus-property", 2, 0, 0, (Scheme_function_unknown)ly_get_mus_property);
242 scm_make_gsubr ("ly-set-mus-property", 3, 0, 0, (Scheme_function_unknown)ly_set_mus_property);
244 ADD_SCM_INIT_FUNC(musicscm,init_functions);