Web-ja: update introduction

[lilypond.git] / lily / break-substitution.cc

diff --git a/lily/break-substitution.cc b/lily/break-substitution.cc
index 75053c34fd00ebe243eb32d23ece6b987b201c17..d198753d673b88bda66d51e8029259f9d4307681 100644 (file)
--- a/lily/break-substitution.cc
+++ b/lily/break-substitution.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2001--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2001--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
@@ -51,7 +51,7 @@ substitute_grob (Grob *sc)
   else
     {
       System *line
-        = dynamic_cast<System *> (unsmob_grob (break_criterion));
+        = unsmob<System> (break_criterion);
       if (sc->get_system () != line)
         sc = sc->find_broken_piece (line);
 
@@ -101,9 +101,9 @@ do_break_substitution (SCM src)
 {
 again:
 
-  if (unsmob_grob (src))
+  if (unsmob<Grob> (src))
     {
-      Grob *new_ptr = substitute_grob (unsmob_grob (src));
+      Grob *new_ptr = substitute_grob (unsmob<Grob> (src));
       return new_ptr ? new_ptr->self_scm () : SCM_UNDEFINED;
     }
   else if (scm_is_vector (src))
@@ -125,8 +125,8 @@ again:
       SCM newcar = do_break_substitution (scm_car (src));
       SCM oldcdr = scm_cdr (src);
 
-      if (newcar == SCM_UNDEFINED
-          && (scm_is_pair (oldcdr) || oldcdr == SCM_EOL))
+      if (SCM_UNBNDP (newcar)
+          && (scm_is_pair (oldcdr) || scm_is_null (oldcdr)))
         {
           /*
             This is tail-recursion, ie.
@@ -147,34 +147,6 @@ again:
   return src;
 }
 
-/*
-  Perform substitution on GROB_LIST using a constant amount of stack.
-*/
-vector<Grob *> temporary_substition_array;
-void
-substitute_grob_array (Grob_array *grob_arr, Grob_array *new_arr)
-{
-  vector<Grob *> &old_grobs (grob_arr->array_reference ());
-  vector<Grob *> *new_grobs (new_arr == grob_arr
-                             ? & temporary_substition_array
-                             : &new_arr->array_reference ());
-
-  new_grobs->resize (old_grobs.size ());
-  Grob **array = (Grob **) new_grobs->data ();
-  Grob **ptr = array;
-  for (vsize i = 0; i < old_grobs.size (); i++)
-    {
-      Grob *orig = old_grobs[i];
-      Grob *new_grob = substitute_grob (orig);
-      if (new_grob)
-        *ptr++ = new_grob;
-    }
-
-  new_grobs->resize (ptr - array);
-  if (new_arr == grob_arr)
-    new_arr->set_array (*new_grobs);
-}
-
 /*
   We don't do
 
@@ -408,13 +380,13 @@ Spanner::fast_substitute_grob_array (SCM sym,
       set_break_subsititution (l ? l->self_scm () : SCM_UNDEFINED);
 
       SCM newval = sc->internal_get_object (sym);
-      if (!unsmob_grob_array (newval))
+      if (!unsmob<Grob_array> (newval))
         {
           newval = Grob_array::make_array ();
           sc->set_object (sym, newval);
         }
 
-      Grob_array *new_array = unsmob_grob_array (newval);
+      Grob_array *new_array = unsmob<Grob_array> (newval);
       for (int k = 0; k < 2; k++)
         for (int j = (*arrs[k])[i][LEFT]; j <= (*arrs[k])[i][RIGHT]; j++)
           {
@@ -461,7 +433,7 @@ substitute_object_alist (SCM alist, SCM dest)
       SCM sym = scm_caar (s);
       SCM val = scm_cdar (s);
 
-      if (Grob_array *orig = unsmob_grob_array (val))
+      if (Grob_array *orig = unsmob<Grob_array> (val))
         {
           SCM handle = scm_assq (sym, dest);
           SCM newval
@@ -469,15 +441,15 @@ substitute_object_alist (SCM alist, SCM dest)
               ? scm_cdr (handle)
               : Grob_array::make_array ();
 
-          Grob_array *new_arr = unsmob_grob_array (newval);
-
-          substitute_grob_array (orig, new_arr);
+          Grob_array *new_arr = unsmob<Grob_array> (newval);
+          // TODO: What if new_arr is null?
+          new_arr->filter_map_assign (*orig, substitute_grob);
           val = newval;
         }
       else
         val = do_break_substitution (val);
 
-      if (val != SCM_UNDEFINED)
+      if (!SCM_UNBNDP (val))
         {
           /*
             for ly:grob? properties, SCM_UNDEFINED could leak out
@@ -497,7 +469,7 @@ Spanner::substitute_one_mutable_property (SCM sym,
   Spanner *s = this;
 
   bool fast_done = false;
-  Grob_array *grob_array = unsmob_grob_array (val);
+  Grob_array *grob_array = unsmob<Grob_array> (val);
   if (grob_array)
     fast_done = s->fast_substitute_grob_array (sym, grob_array);
 
@@ -511,12 +483,13 @@ Spanner::substitute_one_mutable_property (SCM sym,
         if (grob_array)
           {
             SCM newval = sc->internal_get_object (sym);
-            if (!unsmob_grob_array (newval))
+            if (!unsmob<Grob_array> (newval))
               {
                 newval = Grob_array::make_array ();
                 sc->set_object (sym, newval);
               }
-            substitute_grob_array (grob_array, unsmob_grob_array (newval));
+            Grob_array *new_arr = unsmob<Grob_array> (newval);
+            new_arr->filter_map_assign (*grob_array, substitute_grob);
           }
         else
           {