source file of the GNU LilyPond music typesetter
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.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"
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_;
- SCM c =ly_deep_mus_copy (m.mutable_property_alist_);
- mutable_property_alist_ = c;
+ 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 ();
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
print_alist (SCM a, SCM port)
{
- for (SCM s = a; gh_pair_p (s); s = ly_cdr (s))
+ /*
+ SCM_EOL -> catch malformed lists.
+ */
+ for (SCM s = a; s != SCM_EOL; s = ly_cdr (s))
{
- scm_display (gh_caar (s), port);
+ scm_display (ly_caar (s), port);
scm_puts (" = ", port);
- scm_write (gh_cdar (s), port);
+ scm_write (ly_cdar (s), port);
scm_puts ("\n", port);
}
}
void
-Music::transpose (Pitch)
+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_UNSMOB (Music,music);
+
IMPLEMENT_SMOBS (Music);
IMPLEMENT_DEFAULT_EQUAL_P (Music);
/****************************/
SCM
-Music::get_mus_property (const char *nm) const
-{
- SCM sym = ly_symbol2scm (nm);
- return get_mus_property (sym);
-}
-
-SCM
-Music::get_mus_property (SCM sym) const
+Music::internal_get_mus_property (SCM sym) const
{
SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
if (s != SCM_BOOL_F)
return (s == SCM_BOOL_F) ? SCM_EOL : ly_cdr (s);
}
-/*
- Remove the value associated with KEY, and return it. The result is
- that a next call will yield SCM_EOL (and not the underlying
- `basic' property.
-*/
-SCM
-Music::remove_mus_property (const char* key)
-{
- SCM val = get_mus_property (key);
- if (val != SCM_EOL)
- set_mus_property (key, SCM_EOL);
- return val;
-}
-
void
-Music::set_mus_property (const char* k, SCM v)
+Music::internal_set_mus_property (SCM s, SCM v)
{
- SCM s = ly_symbol2scm (k);
- set_mus_property (s, v);
-}
+ if (internal_type_checking_global_b)
+ if (!type_check_assignment (s, v, ly_symbol2scm ("music-type?")))
+ abort ();
-void
-Music::set_immutable_mus_property (const char*k, SCM v)
-{
- SCM s = ly_symbol2scm (k);
- set_immutable_mus_property (s, v);
+ mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
}
-void
-Music::set_immutable_mus_property (SCM s, SCM v)
-{
- immutable_property_alist_ = gh_cons (gh_cons (s,v), mutable_property_alist_);
- mutable_property_alist_ = scm_assq_remove_x (mutable_property_alist_, s);
-}
-void
-Music::set_mus_property (SCM s, SCM v)
-{
- mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
-}
+
#include "main.hh"
set_mus_property ("origin", make_input (ip));
}
-
-
Input*
Music::origin () const
{
}
-
-
-
Music::~Music ()
{
}
-SCM
-ly_get_mus_property (SCM mus, SCM sym)
+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);
-
- if (sc)
- {
- return sc->get_mus_property (sym);
- }
- else
- {
- warning (_ ("ly_get_mus_property (): Not a Music"));
- scm_write (mus, scm_current_error_port ());
- }
- return SCM_EOL;
-}
+ 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);
+}
-SCM
-ly_set_mus_property (SCM mus, SCM sym, SCM val)
+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");
- if (!gh_symbol_p (sym))
- {
- warning (_ ("ly_set_mus_property (): Not a symbol"));
- scm_write (mus, scm_current_error_port ());
-
- return SCM_UNSPECIFIED;
- }
-
- if (sc)
+ bool ok = type_check_assignment (sym, val, ly_symbol2scm ("music-type?"));
+ if (ok)
{
- sc->set_mus_property (sym, val);
+ sc->internal_set_mus_property (sym, val);
}
- else
- {
- warning (_ ("ly_set_mus_property (): not of type Music"));
- scm_write (mus, scm_current_error_port ());
- }
-
+
return SCM_UNSPECIFIED;
}
// to do property args
-SCM
-ly_make_music (SCM type)
+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.
+")
{
- if (!gh_string_p (type))
- {
- warning (_ ("ly_make_music (): Not a string"));
- scm_write (type, scm_current_error_port ());
+ 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 SCM_UNSPECIFIED;
- }
- else
- {
- SCM s = get_music (ly_scm2string (type))->self_scm ();
- scm_gc_unprotect_object (s);
- return s;
- }
+ return s;
}
-SCM
-ly_music_name (SCM mus)
+LY_DEFINE(ly_music_name, "ly-music-name", 1, 0, 0,
+ (SCM mus),
+ "Return the name of @var{music}.")
{
Music * m = unsmob_music (mus);
- const char *nm ="";
- if (!m)
- {
- warning (_ ("ly_music_name (): Not a music expression"));
- scm_write (mus, scm_current_error_port ());
- }
- else
- nm = classname (m);
- return ly_str02scm (nm);
+ SCM_ASSERT_TYPE(m, mus, SCM_ARG1, __FUNCTION__ ,"music");
+
+ const char * nm = classname (m);
+ return scm_makfrom0str (nm);
}
-static void
-init_functions ()
+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.")
{
- scm_c_define_gsubr ("ly-get-mus-property", 2, 0, 0, (Scheme_function_unknown)ly_get_mus_property);
- scm_c_define_gsubr ("ly-set-mus-property", 3, 0, 0, (Scheme_function_unknown)ly_set_mus_property);
- scm_c_define_gsubr ("ly-make-music", 1, 0, 0, (Scheme_function_unknown)ly_make_music);
- scm_c_define_gsubr ("ly-music-name", 1, 0, 0, (Scheme_function_unknown)ly_music_name);
+ 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_SCM_INIT_FUNC (musicscm,init_functions);
ADD_MUSIC(Music);
+
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