lily/translator.cc

   1 /*
   2   translator.cc -- implement Translator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9
  10 #include "translator.hh"
  11 #include "debug.hh"
  12 #include "translator-group.hh"
  13 #include "translator-def.hh"
  14
  15 #include "moment.hh"
  16 #include "ly-smobs.icc"
  17
  18 char const*
  19 Translator::name () const
  20 {
  21   return classname (this);
  22 }
  23
  24 Translator::~Translator ()
  25 {
  26 }
  27
  28 void
  29 Translator::init ()
  30 {
  31   simple_trans_list_ = SCM_EOL;
  32   trans_group_list_ = SCM_EOL;
  33   properties_scm_ = SCM_EOL;
  34   definition_ = SCM_EOL;
  35   daddy_trans_l_ =0;
  36 }
  37
  38 Translator::Translator ()
  39 {
  40   init ();
  41   output_def_l_ = 0;
  42   smobify_self ();
  43
  44 }
  45
  46 Translator::Translator (Translator const &s)
  47   : Input (s)
  48 {
  49   init ();
  50   output_def_l_ = s.output_def_l_;
  51   type_str_ = s.type_str_;
  52
  53   smobify_self ();
  54 }
  55
  56 bool
  57 Translator::is_alias_b (String s) const
  58 {
  59   bool b  = s == type_str_;
  60
  61   for (SCM a = unsmob_translator_def (definition_)->type_aliases_;
  62        !b && gh_pair_p (a); a = gh_cdr (a))
  63     b = b || s == ly_scm2string (gh_car (a));
  64
  65   return b;
  66 }
  67
  68 bool
  69 Translator::try_music (Music *)
  70 {
  71   return false;
  72 }
  73
  74
  75 Moment
  76 Translator::now_mom () const
  77 {
  78   return daddy_trans_l_->now_mom ();
  79 }
  80
  81
  82
  83
  84
  85
  86 void
  87 Translator::removal_processing ()
  88 {
  89   finalize ();
  90 }
  91
  92
  93 void
  94 Translator::announces ()
  95 {
  96   do_announces ();
  97 }
  98
  99
 100 Music_output_def *
 101 Translator::output_def_l () const
 102 {
 103   return output_def_l_;
 104 }
 105
 106 SCM
 107 Translator::get_property (char const * id) const
 108 {
 109   return daddy_trans_l_->get_property (ly_symbol2scm (id));
 110 }
 111
 112 SCM
 113 Translator::get_property (SCM sym) const
 114 {
 115   return daddy_trans_l_->get_property (sym);
 116 }
 117
 118 void
 119 Translator:: stop_translation_timestep ()
 120 {
 121 }
 122
 123 void
 124 Translator::start_translation_timestep ()
 125 {
 126 }
 127
 128 void
 129 Translator::do_announces ()
 130 {
 131 }
 132
 133 void
 134 Translator::initialize ()
 135 {
 136 }
 137
 138 void
 139 Translator::finalize ()
 140 {
 141 }
 142
 143
 144 /*
 145
 146   SMOBS
 147
 148 */
 149 SCM
 150 Translator::mark_smob (SCM sm)
 151 {
 152   Translator * me = (Translator*) SCM_CELL_WORD_1 (sm);
 153   scm_gc_mark (me->simple_trans_list_);
 154   scm_gc_mark (me->trans_group_list_);
 155   scm_gc_mark (me->definition_);
 156   scm_gc_mark (me->properties_scm_);
 157
 158   return me->properties_scm_;
 159 }
 160
 161
 162 int
 163 Translator::print_smob (SCM s, SCM port, scm_print_state *)
 164 {
 165   Translator *sc = (Translator *) gh_cdr (s);
 166
 167   scm_puts ("#<Translator ", port);
 168   scm_puts ((char *)sc->name (), port);
 169   scm_display (sc->simple_trans_list_, port);
 170   /*
 171     don't try to print properties, that is too much hassle.
 172    */
 173   scm_puts (" >", port);
 174
 175   return 1;
 176 }
 177
 178 IMPLEMENT_UNSMOB (Translator, translator);
 179 IMPLEMENT_SMOBS (Translator);
 180 IMPLEMENT_DEFAULT_EQUAL_P (Translator);