/*
moment.cc -- implement Moment
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+ (c) 1999--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
-#include "lily-guile.hh"
#include "moment.hh"
+
#include "warn.hh"
-#include "ly-smobs.icc"
+Moment::Moment ()
+{
+}
+
+Moment::Moment (int m)
+{
+ main_part_ = Rational (m);
+ grace_part_ = Rational ( 0);
+}
+
+Moment::Moment (Rational m, Rational g)
+{
+ main_part_ = m;
+ grace_part_ = g;
+}
+
+Moment::Moment (Rational m)
+{
+ main_part_ = m;
+ grace_part_ = Rational (0);
+}
+
+#include "ly-smobs.icc"
IMPLEMENT_SIMPLE_SMOBS (Moment);
IMPLEMENT_TYPE_P (Moment, "ly:moment?");
return SCM_EOL;
}
-
-
-
int
Moment::print_smob (SCM s, SCM port, scm_print_state *)
{
- Moment *r = (Moment *) ly_cdr (s);
+ Moment *r = (Moment *) SCM_CELL_WORD_1 (s);
scm_puts ("#<Mom ", port);
String str = r->to_string ();
return 1;
}
-/*
- TODO: add optional factor argument.
-*/
-LY_DEFINE (make_moment,"ly:make-moment", 2,2,0, (SCM n, SCM d, SCM gn, SCM gd),
- "Create the rational number with main timing @var{n}/@var{d}, "
- "and optional grace timin @var{gn}/@var{gd}.\n"
- "\n"
- "\n"
- "Moment is a point in musical time. It is consists of a pair of\n"
- "rationals (@var{m},@var{g}), where @var{m} is the timing for the main\n"
- "notes, and @var{g} the timing for grace notes. In absence of grace\n"
- "notes, @var{g} is zero.\n"
- )
-{
- SCM_ASSERT_TYPE (SCM_INUMP (n), n, SCM_ARG1, __FUNCTION__, "integer");
- SCM_ASSERT_TYPE (SCM_INUMP (d), d, SCM_ARG2, __FUNCTION__, "integer");
-
- int grace_num = 0;
- if (gn != SCM_UNDEFINED)
- {
- SCM_ASSERT_TYPE (SCM_INUMP (gn), gn, SCM_ARG3, __FUNCTION__, "integer");
- grace_num = ly_scm2int (gn);
- }
-
- int grace_den = 1;
- if (gd != SCM_UNDEFINED)
- {
- SCM_ASSERT_TYPE (SCM_INUMP (gd), gd, SCM_ARG4, __FUNCTION__, "integer");
- grace_den = ly_scm2int (gd);
- }
-
- return Moment (Rational (ly_scm2int (n), ly_scm2int (d)),
- Rational (grace_num, grace_den)).smobbed_copy ();
-}
-
-LY_DEFINE (add_moment,"ly:add-moment", 2,0,0, (SCM a, SCM b),
- "Add two moments."
- )
-{
- Moment * ma = unsmob_moment (a);
- Moment * mb = unsmob_moment (b);
- SCM_ASSERT_TYPE (ma, a, SCM_ARG1, __FUNCTION__, "moment");
- SCM_ASSERT_TYPE (mb, b, SCM_ARG2, __FUNCTION__, "moment");
-
- return (*ma + *mb).smobbed_copy ();
-}
-
-
-LY_DEFINE (mul_moment,"ly:mul-moment", 2,0,0, (SCM a, SCM b),
- "Multiply two moments."
- )
-{
- Moment * ma = unsmob_moment (a);
- Moment * mb = unsmob_moment (b);
- SCM_ASSERT_TYPE (ma, a, SCM_ARG1, __FUNCTION__, "moment");
- SCM_ASSERT_TYPE (mb, b, SCM_ARG2, __FUNCTION__, "moment");
-
- return (*ma * *mb).smobbed_copy ();
-}
-
-
-
-LY_DEFINE (div_moment,"ly:div-moment", 2,0,0, (SCM a, SCM b),
- "Divide two moments."
- )
-{
- Moment * ma = unsmob_moment (a);
- Moment * mb = unsmob_moment (b);
- SCM_ASSERT_TYPE (ma, a, SCM_ARG1, __FUNCTION__, "moment");
- SCM_ASSERT_TYPE (mb, b, SCM_ARG2, __FUNCTION__, "moment");
-
- return (*ma / *mb).smobbed_copy ();
-}
-
-LY_DEFINE (ly_moment_less_p,"ly:moment<?", 2,0,0, (SCM a, SCM b),
- "Compare two moments.")
+SCM
+Moment::as_scheme () const
{
- Moment * ma = unsmob_moment (a);
- Moment * mb = unsmob_moment (b);
- SCM_ASSERT_TYPE (ma, a, SCM_ARG1, __FUNCTION__, "moment");
- SCM_ASSERT_TYPE (mb, b, SCM_ARG2, __FUNCTION__, "moment");
-
- return ly_bool2scm (*ma < *mb);
+ return scm_list_5 (ly_symbol2scm ("ly:make-moment"),
+ scm_from_int (main_part_.num()),
+ scm_from_int (main_part_.den()),
+ scm_from_int (grace_part_.num()),
+ scm_from_int (grace_part_.den()));
}
-
SCM
Moment::equal_p (SCM a, SCM b)
{
return (*m1 == *m2) ? SCM_BOOL_T : SCM_BOOL_F;
}
-/****************************************************************/
-
int
compare (Moment const &a, Moment const &b)
{
return Rational::compare (a.grace_part_, b.grace_part_);
}
-Moment::Moment ()
-{
-
-}
-
-Moment::Moment (int m)
-{
- main_part_ = Rational (m);
- grace_part_ = Rational ( 0);
-}
-
-Moment::Moment (Rational m, Rational g)
-{
- main_part_ = m;
- grace_part_ = g;
-}
-
-Moment::Moment (Rational m)
-{
- main_part_ = m;
- grace_part_ = Rational (0);
-}
-
void
Moment::operator += (Moment const &src)
{
- main_part_ +=src.main_part_ ;
+ main_part_ += src.main_part_ ;
grace_part_ += src.grace_part_;
}
void
grace_part_ /= src.main_part_;
}
-
-
int
-Moment::den () const { return main_part_.den (); }
+Moment::den () const
+{
+ return main_part_.den ();
+}
int
-Moment::num () const { return main_part_.num (); }
+Moment::num () const
+{
+ return main_part_.num ();
+}
bool
Moment::to_bool () const
main_part_.set_infinite (k);
}
-
String
Moment::to_string () const
{
return os;
}
#endif
+
+Moment
+robust_scm2moment (SCM m, Moment d)
+{
+ Moment *p = unsmob_moment (m);
+ if (!p)
+ return d;
+ else
+ return *p;
+}
+
+
+bool
+moment_less (SCM a, SCM b)
+{
+ return *unsmob_moment (a) < *unsmob_moment (b);
+}
+