2 music.cc -- implement Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "input-smob.hh"
11 #include "music-list.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_ = l;
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 print_alist (SCM a, SCM port)
87 for (SCM s = a; gh_pair_p (s); s = gh_cdr (s))
89 scm_display (gh_caar (s), port);
90 scm_puts (" = ", port);
91 scm_write (gh_cdar (s), port);
92 scm_puts ("\n", port);
97 Music::print_smob(SCM s, SCM p, scm_print_state*)
99 scm_puts ("#<Music ", p);
100 Music* m = unsmob_music (s);
101 scm_puts (classname(m),p);
103 print_alist (m->mutable_property_alist_, p);
104 print_alist (m->immutable_property_alist_, p);
111 Music::to_relative_octave (Pitch m)
118 Music::transpose (Pitch )
122 IMPLEMENT_TYPE_P(Music, "music?");
123 IMPLEMENT_UNSMOB(Music,music);
124 IMPLEMENT_SMOBS(Music);
125 IMPLEMENT_DEFAULT_EQUAL_P(Music);
127 /****************************/
130 Music::get_mus_property (const char *nm) const
132 SCM sym = ly_symbol2scm (nm);
133 return get_mus_property (sym);
137 Music::get_mus_property (SCM sym) const
139 SCM s = scm_sloppy_assq(sym, mutable_property_alist_);
143 s = scm_sloppy_assq (sym, immutable_property_alist_);
144 return (s == SCM_BOOL_F) ? SCM_EOL : gh_cdr (s);
148 Remove the value associated with KEY, and return it. The result is
149 that a next call will yield SCM_EOL (and not the underlying
153 Music::remove_mus_property (const char* key)
155 SCM val = get_mus_property (key);
157 set_mus_property (key, SCM_EOL);
162 Music::set_mus_property (const char* k, SCM v)
164 SCM s = ly_symbol2scm (k);
165 set_mus_property (s, v);
169 Music::set_immutable_mus_property (const char*k, SCM v)
171 SCM s = ly_symbol2scm (k);
172 set_immutable_mus_property (s, v);
176 Music::set_immutable_mus_property (SCM s, SCM v)
178 immutable_property_alist_ = gh_cons (gh_cons (s,v), mutable_property_alist_);
179 mutable_property_alist_ = scm_assq_remove_x (mutable_property_alist_, s);
182 Music::set_mus_property (SCM s, SCM v)
184 mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
188 Music::set_spot (Input ip)
190 set_mus_property ("origin", make_input (ip));
196 Music::origin () const
198 Input *ip = unsmob_input (get_mus_property ("origin"));
199 return ip ? ip : & dummy_input_global;
212 ly_get_mus_property (SCM mus, SCM sym)
214 Music * sc = unsmob_music (mus);
218 return sc->get_mus_property (sym);
222 warning (_("ly_get_mus_property (): Not a Music"));
223 scm_write (mus, scm_current_error_port ());
230 ly_set_mus_property (SCM mus, SCM sym, SCM val)
232 Music * sc = unsmob_music (mus);
234 if (!gh_symbol_p (sym))
236 warning (_("ly_set_mus_property (): Not a symbol"));
237 scm_write (mus, scm_current_error_port ());
239 return SCM_UNSPECIFIED;
244 sc->set_mus_property (sym, val);
248 warning (_("ly_set_mus_property (): not of type Music"));
249 scm_write (mus, scm_current_error_port ());
252 return SCM_UNSPECIFIED;
258 scm_make_gsubr ("ly-get-mus-property", 2, 0, 0, (Scheme_function_unknown)ly_get_mus_property);
259 scm_make_gsubr ("ly-set-mus-property", 3, 0, 0, (Scheme_function_unknown)ly_set_mus_property);
261 ADD_SCM_INIT_FUNC(musicscm,init_functions);