lily/translator-def.cc

   1 /*
   2   translator-def.cc --  implement Translator_def
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2000--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "lily-proto.hh"
  11 #include "translator-def.hh"
  12 #include "translator-group.hh"
  13 #include "warn.hh"
  14 #include "music-output-def.hh"
  15
  16 #include "ly-smobs.icc"
  17
  18 int
  19 Translator_def::print_smob (SCM smob, SCM port, scm_print_state*)
  20 {
  21   Translator_def* me = (Translator_def*) SCM_CELL_WORD_1 (smob);
  22
  23   scm_puts ("#<Translator_def ", port);
  24   scm_display (me->type_name_, port);
  25   scm_puts (">", port);
  26   return 1;
  27 }
  28
  29
  30 SCM
  31 Translator_def::mark_smob (SCM smob)
  32 {
  33   Translator_def* me = (Translator_def*) SCM_CELL_WORD_1 (smob);
  34
  35   scm_gc_mark (me->type_aliases_);
  36   scm_gc_mark (me->consists_name_list_);
  37   scm_gc_mark (me->accepts_name_list_);
  38   scm_gc_mark (me->end_consists_name_list_);
  39   scm_gc_mark (me->property_ops_);
  40   scm_gc_mark (me->translator_group_type_);
  41   return me->type_name_;
  42 }
  43
  44 SCM push_sym;
  45 SCM assign_sym;
  46
  47 static void
  48 foo_init ()
  49 {
  50   push_sym = scm_permanent_object (ly_symbol2scm ("push"));
  51   assign_sym = scm_permanent_object (ly_symbol2scm ("assign"));
  52 }
  53
  54 ADD_SCM_INIT_FUNC (transdef, foo_init);
  55
  56 Translator_def::Translator_def ()
  57 {
  58   type_aliases_ = SCM_EOL;
  59   translator_group_type_ = SCM_EOL;
  60   accepts_name_list_ = SCM_EOL;
  61   consists_name_list_ = SCM_EOL;
  62   end_consists_name_list_ = SCM_EOL;
  63   property_ops_ = SCM_EOL;
  64   type_name_ = SCM_EOL;
  65 }
  66 Translator_def::~Translator_def ()
  67 {
  68 }
  69
  70 Translator_def::Translator_def (Translator_def const & s)
  71   : Input (s)
  72 {
  73   consists_name_list_ = scm_list_copy (s.consists_name_list_);
  74   end_consists_name_list_ = scm_list_copy (s.end_consists_name_list_);
  75   accepts_name_list_ = scm_list_copy (s.accepts_name_list_);
  76   property_ops_ = scm_list_copy (s.property_ops_);
  77   type_aliases_ = s.type_aliases_;
  78   translator_group_type_ = s.translator_group_type_;
  79   type_name_ = s.type_name_;
  80 }
  81
  82
  83
  84 void
  85 Translator_def::set_acceptor (SCM name, bool add)
  86 {
  87   if (add)
  88     this->accepts_name_list_ = gh_cons (name, this->accepts_name_list_);
  89   else
  90     this->accepts_name_list_ = scm_delete_x (name, this->accepts_name_list_);
  91 }
  92
  93
  94 SCM
  95 Translator_def::modify_definition (SCM list, SCM str, bool add)
  96 {
  97   String s = ly_scm2string (str);
  98   if (!get_translator_l (s))
  99     error (_ ("Program has no such type"));
 100
 101   if (add)
 102     {
 103       if (scm_memq (str, list) != SCM_BOOL_F)
 104         {
 105           warning (_f ("Already contains: `%s'", s));
 106           warning (_f ("Not adding translator: `%s'", s));
 107         }
 108       else
 109         list= gh_cons (str, list);
 110     }
 111   else
 112     {
 113       list = scm_delete_x (str, list);
 114     }
 115   return list;
 116 }
 117
 118
 119
 120 void
 121 Translator_def::remove_element (SCM s)
 122 {
 123   this->end_consists_name_list_ = modify_definition (this->end_consists_name_list_, s, false);
 124   this->consists_name_list_ = modify_definition (this->consists_name_list_, s, false);
 125 }
 126
 127 void
 128 Translator_def::add_element (SCM s)
 129 {
 130   this->consists_name_list_ = modify_definition (this->consists_name_list_, s, true);
 131 }
 132
 133 void
 134 Translator_def::add_last_element (SCM s)
 135 {
 136   this->end_consists_name_list_ = modify_definition (this->end_consists_name_list_, s, true);
 137 }
 138 void
 139 Translator_def::add_push_property (SCM props, SCM syms,  SCM vals)
 140 {
 141   this->property_ops_ = gh_cons (gh_list (push_sym, props, syms, vals, SCM_UNDEFINED),
 142                                  this->property_ops_);
 143 }
 144
 145 void
 146 Translator_def::add_pop_property (SCM props, SCM syms)
 147 {
 148   this->property_ops_ = gh_cons (gh_list (push_sym, props, syms, SCM_UNDEFINED),
 149                                  this->property_ops_);
 150 }
 151
 152 /*
 153   Do it. SYMS maybe a symbol or a list of symbols. VAL is
 154   SCM_UNDEFINED in case of a pop
 155 */
 156 void
 157 Translator_def::apply_pushpop_property (Translator_group* me,SCM syms, SCM eprop, SCM val)
 158 {
 159   if (gh_symbol_p (syms))
 160     dynamic_cast<Translator_group*> (me)->execute_single_pushpop_property (syms, eprop, val);
 161   else for (SCM s = syms; gh_pair_p (s); s = gh_cdr (s))
 162     dynamic_cast<Translator_group*> (me)->execute_single_pushpop_property (gh_car (s), eprop, val);
 163 }
 164
 165
 166
 167 Link_array<Translator_def>
 168 Translator_def::path_to_acceptable_translator (SCM type_str, Music_output_def* odef) const
 169 {
 170   assert (gh_string_p (type_str));
 171
 172   Link_array<Translator_def> accepted_arr;
 173   for (SCM s = accepts_name_list_; gh_pair_p (s); s = gh_cdr (s))
 174     {
 175       Translator_def *t = unsmob_translator_def (odef->find_translator_l (gh_car (s)));
 176       if (!t)
 177         continue;
 178       accepted_arr.push (t);
 179     }
 180
 181   Link_array<Translator_def> best_result;
 182   for (int i=0; i < accepted_arr.size (); i++)
 183     {
 184
 185       /*
 186         don't check aliases, because \context Staff should not create RhythmicStaff.
 187       */
 188       if (gh_equal_p (accepted_arr[i]->type_name_, type_str))
 189         {
 190           best_result.push (accepted_arr[i]);
 191           return best_result;
 192         }
 193     }
 194
 195   int best_depth= INT_MAX;
 196   for (int i=0; i < accepted_arr.size (); i++)
 197     {
 198       Translator_def * g = accepted_arr[i];
 199
 200       Link_array<Translator_def> result
 201         = g->path_to_acceptable_translator (type_str, odef);
 202       if (result.size () && result.size () < best_depth)
 203         {
 204           result.insert (g,0);
 205           best_result = result;
 206         }
 207     }
 208
 209   return best_result;
 210 }
 211 IMPLEMENT_UNSMOB (Translator_def,translator_def);
 212 IMPLEMENT_SMOBS (Translator_def);
 213 IMPLEMENT_DEFAULT_EQUAL_P (Translator_def);
 214
 215
 216 static SCM
 217 trans_list (SCM namelist, Translator_group*tg)
 218 {
 219   SCM l = SCM_EOL;
 220   for (SCM s = namelist; gh_pair_p (s) ; s = gh_cdr (s))
 221     {
 222       Translator * t = get_translator_l (ly_scm2string (gh_car (s)));
 223       if (!t)
 224         warning (_f ("can't find: `%s'", s));
 225       else
 226         {
 227           Translator * tr = t->clone ();
 228           SCM str = tr->self_scm ();
 229           l = gh_cons (str, l);
 230
 231           tr->daddy_trans_l_ = tg;
 232           tr->output_def_l_  = tg->output_def_l_;
 233
 234           scm_unprotect_object (str);
 235         }
 236     }
 237   return l;
 238 }
 239
 240
 241 Translator_group *
 242 Translator_def::instantiate (Music_output_def* md)
 243 {
 244   Translator * g = get_translator_l (ly_scm2string (translator_group_type_));
 245   g = g->clone ();
 246
 247   Translator_group *tg = dynamic_cast<Translator_group*> (g);
 248   tg->output_def_l_ = md;
 249   tg->definition_ = self_scm ();
 250   tg->type_str_ = ly_scm2string (type_name_);
 251   SCM l1 = trans_list (consists_name_list_, tg);
 252   SCM l2 =trans_list (end_consists_name_list_,tg);
 253   l1 = scm_reverse_x (l1, l2);
 254
 255   tg->simple_trans_list_ = l1;
 256
 257   return tg;
 258 }
 259
 260
 261 void
 262 Translator_def::apply_property_operations (Translator_group*tg)
 263 {
 264   SCM correct_order = scm_reverse (property_ops_); // pity of the mem.
 265   for (SCM s = correct_order; gh_pair_p (s); s = gh_cdr (s))
 266     {
 267       SCM entry = gh_car (s);
 268       SCM type = gh_car (entry);
 269       entry = gh_cdr (entry);
 270
 271       if (type == push_sym)
 272         {
 273           SCM val = gh_cddr (entry);
 274           val = gh_pair_p (val) ? gh_car (val) : SCM_UNDEFINED;
 275
 276           apply_pushpop_property (tg, gh_car (entry), gh_cadr (entry), val);
 277         }
 278       else if (type == assign_sym)
 279         {
 280           tg->set_property (gh_car (entry), gh_cadr (entry));
 281         }
 282     }
 283 }
 284
 285 SCM
 286 Translator_def::clone_scm () const
 287 {
 288   Translator_def * t = new Translator_def (*this);
 289   return t->unprotected_smobify_self ();
 290 }
 291
 292 SCM
 293 Translator_def::make_scm ()
 294 {
 295   Translator_def* t = new Translator_def;
 296   return t->unprotected_smobify_self ();
 297 }
 298
 299 void
 300 Translator_def::add_property_assign (SCM nm, SCM val)
 301 {
 302   this->property_ops_ = gh_cons (gh_list (assign_sym, scm_string_to_symbol (nm), val, SCM_UNDEFINED),
 303                                  this->property_ops_);
 304 }
 305
 306 /*
 307   Default child context as a SCM string, or something else if there is
 308   none.
 309 */
 310 SCM
 311 Translator_def::default_child_context_name ()
 312 {
 313   SCM d = accepts_name_list_;
 314   return gh_pair_p (d) ? gh_car (scm_last_pair (d)) : SCM_EOL;
 315 }
 316
 317 SCM
 318 Translator_def::to_alist ()const
 319 {
 320   SCM l = SCM_EOL;
 321
 322   l = gh_cons (gh_cons (ly_symbol2scm ("consists"),  consists_name_list_), l);
 323   l = gh_cons (gh_cons (ly_symbol2scm ("end-consists"),  end_consists_name_list_), l);
 324   l = gh_cons (gh_cons (ly_symbol2scm ("accepts"),  accepts_name_list_), l);
 325   l = gh_cons (gh_cons (ly_symbol2scm ("property-ops"),  property_ops_), l);
 326   l = gh_cons (gh_cons (ly_symbol2scm ("type-name"),  type_name_), l); // junkme.
 327   l = gh_cons (gh_cons (ly_symbol2scm ("group-type"),  translator_group_type_), l);
 328
 329   return l;
 330 }