2 music.cc -- implement Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "input-smob.hh"
12 #include "music-list.hh"
15 #include "ly-smobs.icc"
18 ly_deep_mus_copy (SCM m)
22 SCM ss = unsmob_music (m)->clone ()->self_scm ();
23 scm_gc_unprotect_object (ss);
26 else if (gh_pair_p (m))
28 return gh_cons (ly_deep_mus_copy (ly_car (m)), ly_deep_mus_copy (ly_cdr (m)));
37 immutable_property_alist_ = SCM_EOL;
38 mutable_property_alist_ = SCM_EOL;
42 Music::Music (Music const &m)
44 immutable_property_alist_ = m.immutable_property_alist_;
45 SCM c =ly_deep_mus_copy (m.mutable_property_alist_);
46 mutable_property_alist_ = c;
50 set_spot (*m.origin ());
56 immutable_property_alist_ = l;
57 mutable_property_alist_ = SCM_EOL;
63 Music::mark_smob (SCM m)
65 Music * mus = (Music *)SCM_CELL_WORD_1 (m);
66 scm_gc_mark (mus->immutable_property_alist_);
67 scm_gc_mark (mus->mutable_property_alist_);
72 Music::compress (Moment)
79 Music::length_mom () const
81 SCM l = get_mus_property ("length");
82 if (unsmob_moment (l))
83 return *unsmob_moment (l);
84 else if (gh_procedure_p (l))
86 SCM res = gh_call1 (l, self_scm ());
87 return *unsmob_moment (res);
94 Music::start_mom () const
96 SCM l = get_mus_property ("start-moment-function");
97 if (gh_procedure_p (l))
99 SCM res = gh_call1 (l, self_scm ());
100 return *unsmob_moment (res);
108 print_alist (SCM a, SCM port)
110 for (SCM s = a; gh_pair_p (s); s = ly_cdr (s))
112 scm_display (ly_caar (s), port);
113 scm_puts (" = ", port);
114 scm_write (ly_cdar (s), port);
115 scm_puts ("\n", port);
120 Music::print_smob (SCM s, SCM p, scm_print_state*)
122 scm_puts ("#<Music ", p);
123 Music* m = unsmob_music (s);
124 scm_puts (classname (m),p);
126 print_alist (m->mutable_property_alist_, p);
127 print_alist (m->immutable_property_alist_, p);
134 Music::to_relative_octave (Pitch m)
141 Music::transpose (Pitch delta)
143 Pitch *p = unsmob_pitch (get_mus_property ("pitch"));
148 np.transpose (delta);
150 if (abs (np.alteration_i_) > 2)
152 warning (_f ("Transposition by %s makes accidental larger than two",
156 set_mus_property ("pitch", np.smobbed_copy ());
159 IMPLEMENT_TYPE_P (Music, "music?");
161 IMPLEMENT_SMOBS (Music);
162 IMPLEMENT_DEFAULT_EQUAL_P (Music);
164 /****************************/
167 Music::internal_get_mus_property (SCM sym) const
169 SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
173 s = scm_sloppy_assq (sym, immutable_property_alist_);
174 return (s == SCM_BOOL_F) ? SCM_EOL : ly_cdr (s);
178 Music::internal_set_mus_property (SCM s, SCM v)
181 if (internal_type_checking_global_b)
182 assert (type_check_assignment (s, v, ly_symbol2scm ("music-type?")));
185 mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
191 Music::set_spot (Input ip)
193 set_mus_property ("origin", make_input (ip));
197 Music::origin () const
199 Input *ip = unsmob_input (get_mus_property ("origin"));
200 return ip ? ip : & dummy_input_global;
210 ly_get_mus_property (SCM mus, SCM sym)
212 Music * sc = unsmob_music (mus);
213 SCM_ASSERT_TYPE(sc, mus, SCM_ARG1, __FUNCTION__, "grob");
214 SCM_ASSERT_TYPE(gh_symbol_p(sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
216 return sc->internal_get_mus_property (sym);
222 ly_set_mus_property (SCM mus, SCM sym, SCM val)
224 Music * sc = unsmob_music (mus);
225 SCM_ASSERT_TYPE(sc, mus, SCM_ARG1, __FUNCTION__, "grob");
226 SCM_ASSERT_TYPE(gh_symbol_p(sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
228 bool ok = type_check_assignment (sym, val, ly_symbol2scm ("music-type?"));
231 sc->internal_set_mus_property (sym, val);
234 return SCM_UNSPECIFIED;
238 // to do property args
240 ly_make_music (SCM type)
242 SCM_ASSERT_TYPE(gh_string_p(type), type, SCM_ARG1, __FUNCTION__, "string");
245 SCM s = get_music (ly_scm2string (type))->self_scm ();
246 scm_gc_unprotect_object (s);
252 ly_music_name (SCM mus)
254 Music * m = unsmob_music (mus);
255 SCM_ASSERT_TYPE(m, mus, SCM_ARG1, __FUNCTION__ ,"music");
257 const char * nm = classname (m);
258 return ly_str02scm (nm);
262 ly_music_list_p (SCM l)
264 if (scm_list_p (l) != SCM_BOOL_T)
267 while (gh_pair_p (l))
269 if (!unsmob_music (gh_car (l)))
279 scm_c_define_gsubr ("music-list?", 1, 0, 0, (Scheme_function_unknown)ly_music_list_p);
280 scm_c_define_gsubr ("ly-get-mus-property", 2, 0, 0, (Scheme_function_unknown)ly_get_mus_property);
281 scm_c_define_gsubr ("ly-set-mus-property", 3, 0, 0, (Scheme_function_unknown)ly_set_mus_property);
282 scm_c_define_gsubr ("ly-make-music", 1, 0, 0, (Scheme_function_unknown)ly_make_music);
283 scm_c_define_gsubr ("ly-music-name", 1, 0, 0, (Scheme_function_unknown)ly_music_name);
285 ADD_SCM_INIT_FUNC (musicscm,init_functions);