*** empty log message ***

[lilypond.git] / lily / moment.cc

diff --git a/lily/moment.cc b/lily/moment.cc
index edd24f8cd698b18128083d06e50b63c77afef365..4d81493f0ce14b3d8090f559e4a78d90e82570f8 100644 (file)
--- a/lily/moment.cc
+++ b/lily/moment.cc
@@ -1,18 +1,38 @@
 /*   
   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?");
 
@@ -22,13 +42,10 @@ Moment::mark_smob (SCM)
   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 ();
@@ -38,93 +55,17 @@ Moment::print_smob (SCM s, SCM port, scm_print_state *)
   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)
 {
@@ -134,8 +75,6 @@ Moment::equal_p (SCM a, SCM b)
   return (*m1 == *m2) ? SCM_BOOL_T : SCM_BOOL_F;
 }
 
-/****************************************************************/
-
 int
 compare (Moment const &a, Moment const &b)
 {
@@ -152,33 +91,10 @@ Moment::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
@@ -208,13 +124,17 @@ Moment::operator /= (Moment const &src)
   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
@@ -228,7 +148,6 @@ Moment::set_infinite (int k)
   main_part_.set_infinite (k);
 }
 
-
 String
 Moment::to_string () const
 {
@@ -258,3 +177,21 @@ operator << (std::ostream &os, Moment const &m)
   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);
+}
+