source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-
+#include "main.hh"
+#include "input-smob.hh"
#include "music.hh"
#include "music-list.hh"
-#include "debug.hh"
+#include "warn.hh"
+#include "pitch.hh"
+#include "ly-smobs.icc"
+
+SCM
+ly_deep_mus_copy (SCM m)
+{
+ if (unsmob_music (m))
+ {
+ SCM ss = unsmob_music (m)->clone ()->self_scm ();
+ scm_gc_unprotect_object (ss);
+ return ss;
+ }
+ else if (gh_pair_p (m))
+ {
+ return gh_cons (ly_deep_mus_copy (ly_car (m)), ly_deep_mus_copy (ly_cdr (m)));
+ }
+ else
+ return m;
+}
+
+
+Music::Music ()
+{
+ self_scm_ = SCM_EOL;
+ immutable_property_alist_ = SCM_EOL;
+ mutable_property_alist_ = SCM_EOL;
+ smobify_self ();
+}
+
+Music::Music (Music const &m)
+{
+ immutable_property_alist_ = m.immutable_property_alist_;
+ mutable_property_alist_ = SCM_EOL;
+ self_scm_ = SCM_EOL;
+
+ /*
+ First we smobify_self, then we copy over the stuff. If we don't,
+ stack vars that hold the copy might be optimized away, meaning
+ that they won't be protected from GC.
+ */
+ smobify_self ();
+ mutable_property_alist_ = ly_deep_mus_copy (m.mutable_property_alist_);
+ set_spot (*m.origin ());
+}
+
+
+Music::Music (SCM l)
+{
+ self_scm_ = SCM_EOL;
+ immutable_property_alist_ = l;
+ mutable_property_alist_ = SCM_EOL;
+ smobify_self ();
+}
+
+
+SCM
+Music::mark_smob (SCM m)
+{
+ Music * mus = (Music *)SCM_CELL_WORD_1 (m);
+ scm_gc_mark (mus->immutable_property_alist_);
+ scm_gc_mark (mus->mutable_property_alist_);
+ return SCM_EOL;
+}
-MInterval
-Music::time_int() const
+void
+Music::compress (Moment)
{
- return MInterval(0,0);
}
+
+
+
+Moment
+Music::length_mom () const
+{
+ SCM l = get_mus_property ("length");
+ if (unsmob_moment (l))
+ return *unsmob_moment (l);
+ else if (gh_procedure_p (l))
+ {
+ SCM res = gh_call1 (l, self_scm ());
+ return *unsmob_moment (res);
+ }
+
+ return 0;
+}
+
+Moment
+Music::start_mom () const
+{
+ SCM l = get_mus_property ("start-moment-function");
+ if (gh_procedure_p (l))
+ {
+ SCM res = gh_call1 (l, self_scm ());
+ return *unsmob_moment (res);
+ }
+
+ Moment m ;
+ return m;
+}
+
void
-Music::print()const
+print_alist (SCM a, SCM port)
{
-#ifndef NPRINT
- mtor << name() << "{" ;
- do_print();
- mtor << "}\n";
-#endif
+ /*
+ SCM_EOL -> catch malformed lists.
+ */
+ for (SCM s = a; s != SCM_EOL; s = ly_cdr (s))
+ {
+ scm_display (ly_caar (s), port);
+ scm_puts (" = ", port);
+ scm_write (ly_cdar (s), port);
+ scm_puts ("\n", port);
+ }
+}
+
+int
+Music::print_smob (SCM s, SCM p, scm_print_state*)
+{
+ scm_puts ("#<Music ", p);
+ Music* m = unsmob_music (s);
+ scm_puts (classname (m),p);
+
+ print_alist (m->mutable_property_alist_, p);
+ print_alist (m->immutable_property_alist_, p);
+
+ scm_puts (">",p);
+ return 1;
}
+Pitch
+Music::to_relative_octave (Pitch m)
+{
+ return m;
+}
+
+
void
-Music::transpose(Melodic_req const*)
+Music::transpose (Pitch delta)
{
-
+ Pitch *p = unsmob_pitch (get_mus_property ("pitch"));
+ if (!p)
+ return ;
+
+ Pitch np = *p;
+ np.transpose (delta);
+
+ if (abs (np.alteration_) > 2)
+ {
+ warning (_f ("Transposition by %s makes accidental larger than two",
+ delta.string ()));
+ }
+
+ set_mus_property ("pitch", np.smobbed_copy ());
+}
+
+IMPLEMENT_TYPE_P (Music, "music?");
+
+IMPLEMENT_SMOBS (Music);
+IMPLEMENT_DEFAULT_EQUAL_P (Music);
+
+/****************************/
+
+SCM
+Music::internal_get_mus_property (SCM sym) const
+{
+ SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
+ if (s != SCM_BOOL_F)
+ return ly_cdr (s);
+
+ s = scm_sloppy_assq (sym, immutable_property_alist_);
+ return (s == SCM_BOOL_F) ? SCM_EOL : ly_cdr (s);
}
void
-Music::translate(Moment )
+Music::internal_set_mus_property (SCM s, SCM v)
{
+ if (internal_type_checking_global_b)
+ if (!type_check_assignment (s, v, ly_symbol2scm ("music-type?")))
+ abort ();
+
+ mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
}
+
+
+#include "main.hh"
+
void
-Music::do_print()const
+Music::set_spot (Input ip)
+{
+ set_mus_property ("origin", make_input (ip));
+}
+
+Input*
+Music::origin () const
+{
+ Input *ip = unsmob_input (get_mus_property ("origin"));
+ return ip ? ip : & dummy_input_global;
+}
+
+
+Music::~Music ()
{
+
}
-IMPLEMENT_STATIC_NAME(Music);
-IMPLEMENT_IS_TYPE_B(Music);
+LY_DEFINE(ly_get_mus_property,
+ "ly-get-mus-property", 2, 0, 0, (SCM mus, SCM sym),
+ "Get the property @var{sym} of music expression @var{mus}.")
+{
+ Music * sc = unsmob_music (mus);
+ SCM_ASSERT_TYPE(sc, mus, SCM_ARG1, __FUNCTION__, "music");
+ SCM_ASSERT_TYPE(gh_symbol_p (sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
+ return sc->internal_get_mus_property (sym);
+}
+LY_DEFINE(ly_set_mus_property,
+ "ly-set-mus-property!", 3, 0, 0,
+ (SCM mus, SCM sym, SCM val),
+ "Set property @var{sym} in music expression @var{mus} to @var{val}.")
+{
+ Music * sc = unsmob_music (mus);
+ SCM_ASSERT_TYPE(sc, mus, SCM_ARG1, __FUNCTION__, "music");
+ SCM_ASSERT_TYPE(gh_symbol_p (sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
+ bool ok = type_check_assignment (sym, val, ly_symbol2scm ("music-type?"));
+ if (ok)
+ {
+ sc->internal_set_mus_property (sym, val);
+ }
-Music::Music()
+ return SCM_UNSPECIFIED;
+}
+
+
+// to do property args
+LY_DEFINE(ly_make_music,
+ "ly-make-music", 1, 0, 0, (SCM type),
+ "
+Make a music object/expression of type @var{name}. Warning: this
+interface will likely change in the near future.
+
+
+
+Music is the data type that music expressions are stored in. The data
+type does not yet offer many manipulations.
+")
+{
+ SCM_ASSERT_TYPE(gh_string_p (type), type, SCM_ARG1, __FUNCTION__, "string");
+
+ SCM s = make_music (ly_scm2string (type))->self_scm ();
+ scm_gc_unprotect_object (s);
+
+ return s;
+}
+
+LY_DEFINE(ly_music_name, "ly-music-name", 1, 0, 0,
+ (SCM mus),
+ "Return the name of @var{music}.")
{
- parent_music_l_ =0;
+ Music * m = unsmob_music (mus);
+ SCM_ASSERT_TYPE(m, mus, SCM_ARG1, __FUNCTION__ ,"music");
+
+ const char * nm = classname (m);
+ return scm_makfrom0str (nm);
+}
+
+LY_DEFINE(ly_music_list_p,"music-list?", 1, 0, 0,
+ (SCM l),"Type predicate: return true if @var{l} is a list of music objects.")
+{
+ if (scm_list_p (l) != SCM_BOOL_T)
+ return SCM_BOOL_F;
+
+ while (gh_pair_p (l))
+ {
+ if (!unsmob_music (gh_car (l)))
+ return SCM_BOOL_F;
+ l =gh_cdr (l);
+ }
+ return SCM_BOOL_T;
}
+ADD_MUSIC(Music);
-IMPLEMENT_IS_TYPE_B1(Change_reg,Music)
-IMPLEMENT_STATIC_NAME(Change_reg);