-/*
- moment.cc -- implement Moment
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
-#include "lily-guile.hh"
#include "moment.hh"
+
#include "warn.hh"
-SCM
-Moment::mark_smob (SCM)
+Moment::Moment ()
{
- return SCM_EOL;
}
+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()
+Moment::Moment (Rational m)
{
- self_scm_ = SCM_EOL;
+ main_part_ = m;
+ grace_part_ = Rational (0);
}
+
+const char * const Moment::type_p_name_ = "ly:moment?";
+
+
int
-Moment::print_smob (SCM s, SCM port, scm_print_state *)
+Moment::print_smob (SCM port, scm_print_state *) const
{
- Moment *r = (Moment *) gh_cdr (s);
-
scm_puts ("#<Mom ", port);
- String str(r->str());
- scm_puts ((char *)str.ch_C(), port);
- scm_puts (" >", port);
-
+ string str = to_string ();
+ scm_puts ((char *)str.c_str (), port);
+ scm_puts (">", port);
+
return 1;
}
-void
-Moment::do_smobify_self ()
+SCM
+Moment::as_scheme () const
{
+ return scm_list_5 (ly_symbol2scm ("ly:make-moment"),
+ scm_from_int64 (main_part_.num ()),
+ scm_from_int64 (main_part_.den ()),
+ scm_from_int64 (grace_part_.num ()),
+ scm_from_int64 (grace_part_.den ()));
}
SCM
-make_rational (SCM n, SCM d)
-{
- Moment *r;
- SCM retval = SCM_EOL;
- if (SCM_INUMP (n) && SCM_INUMP(d))
- {
- r= new Moment (gh_scm2int (n), gh_scm2int (d));
- }
- else
- {
- ::error ("make-moment takes two integer arguments.");
- r = new Moment (1,1);
- }
+Moment::equal_p (SCM a, SCM b)
+{
+ Moment *m1 = unsmob<Moment> (a);
+ Moment *m2 = unsmob<Moment> (b);
- retval = r->smobify_self ();
- scm_unprotect_object (r->self_scm_);
- return retval ;
+ return (*m1 == *m2) ? SCM_BOOL_T : SCM_BOOL_F;
}
-#include "ly-smobs.icc"
+int
+compare (Moment const &a, Moment const &b)
+{
+ return Moment::compare (a, b);
+}
-IMPLEMENT_UNSMOB(Moment,moment);
-IMPLEMENT_SMOBS(Moment);
+int
+Moment::compare (Moment const &a, Moment const &b)
+{
+ int c = Rational::compare (a.main_part_, b.main_part_);
+ if (c)
+ return c;
+
+ return Rational::compare (a.grace_part_, b.grace_part_);
+}
void
-init_moments ()
+Moment::operator += (Moment const &src)
{
- scm_make_gsubr ("make-moment", 2 , 0, 0, (SCM(*)(...)) make_rational);
+ main_part_ += src.main_part_;
+ grace_part_ += src.grace_part_;
}
-ADD_SCM_INIT_FUNC(moms,init_moments);
+void
+Moment::operator -= (Moment const &src)
+{
+ main_part_ -= src.main_part_;
+ grace_part_ -= src.grace_part_;
+}
-SCM
-Moment::equal_p (SCM a, SCM b)
+/* Only take the main part of SRC for multiplication. */
+void
+Moment::operator *= (Moment const &src)
{
- Moment *m1 = SMOB_TO_TYPE(Moment, a);
- Moment *m2 = SMOB_TO_TYPE(Moment, b);
-
- return (*m1 == *m2) ? SCM_BOOL_T : SCM_BOOL_F;
+ main_part_ *= src.main_part_;
+ grace_part_ *= src.main_part_;
+}
+
+/* Only take the main part of SRC for division. */
+void
+Moment::operator /= (Moment const &src)
+{
+ main_part_ /= src.main_part_;
+ grace_part_ /= src.main_part_;
+}
+
+/* Only take the main part of SRC for division. */
+void
+Moment::operator %= (Moment const &src)
+{
+ main_part_ %= src.main_part_;
+ grace_part_ %= src.main_part_;
+}
+
+I64
+Moment::den () const
+{
+ /* TODO: ensure MSB == 0 here */
+ return main_part_.den ();
+}
+
+I64
+Moment::num () const
+{
+ return main_part_.num ();
+}
+
+bool
+Moment::to_bool () const
+{
+ return main_part_ || grace_part_;
+}
+
+void
+Moment::set_infinite (int k)
+{
+ main_part_.set_infinite (k);
+}
+
+string
+Moment::to_string () const
+{
+ string s = main_part_.to_string ();
+ if (grace_part_)
+ s += "G" + grace_part_.to_string ();
+ return s;
+}
+
+Moment
+Moment::operator - () const
+{
+ Moment m;
+ m.grace_part_ = -grace_part_;
+ m.main_part_ = -main_part_;
+ return m;
+}
+
+#ifdef STREAM_SUPPORT
+ostream &
+operator << (ostream &os, Moment const &m)
+{
+ os << m.to_string ();
+ 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);
}