lily/translator.cc

   1 /*
   2   translator.cc -- implement Translator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9
  10 #include "translator.hh"
  11 #include "warn.hh"
  12 #include "translator-group.hh"
  13 #include "translator-def.hh"
  14
  15 #include "moment.hh"
  16 #include "ly-smobs.icc"
  17
  18
  19 Translator::~Translator ()
  20 {
  21 }
  22
  23 void
  24 Translator::init ()
  25 {
  26   simple_trans_list_ = SCM_EOL;
  27   trans_group_list_ = SCM_EOL;
  28   properties_scm_ = SCM_EOL;
  29   definition_ = SCM_EOL;
  30   daddy_trans_ =0;
  31 }
  32
  33 Translator::Translator ()
  34 {
  35   self_scm_ = SCM_EOL;
  36   init ();
  37   output_def_ = 0;
  38   smobify_self ();
  39 }
  40
  41 Translator::Translator (Translator const &s)
  42 {
  43   self_scm_ = SCM_EOL;
  44   init ();
  45   output_def_ = s.output_def_;
  46
  47   smobify_self ();
  48 }
  49
  50 bool
  51 Translator::is_alias_b (SCM sym) const
  52 {
  53   Translator_def * td = unsmob_translator_def (definition_);
  54   bool b  = (sym == td->type_name_);
  55
  56   for (SCM a = td->type_aliases_; !b && gh_pair_p (a); a = ly_cdr (a))
  57     b = b || sym == ly_car (a);
  58
  59   return b;
  60 }
  61
  62 bool
  63 Translator::try_music (Music *)
  64 {
  65   return false;
  66 }
  67
  68
  69 Moment
  70 Translator::now_mom () const
  71 {
  72   return daddy_trans_->now_mom ();
  73 }
  74
  75 void
  76 Translator::removal_processing ()
  77 {
  78   finalize ();
  79 }
  80
  81 void
  82 Translator::do_announces ()
  83 {
  84 }
  85
  86 Music_output_def *
  87 Translator::get_output_def () const
  88 {
  89   return output_def_;
  90 }
  91
  92 SCM
  93 Translator::internal_get_property (SCM sym) const
  94 {
  95   return daddy_trans_->internal_get_property (sym);
  96 }
  97
  98 void
  99 Translator:: stop_translation_timestep ()
 100 {
 101 }
 102
 103 void
 104 Translator::start_translation_timestep ()
 105 {
 106 }
 107
 108 void
 109 Translator::initialize ()
 110 {
 111 }
 112
 113 void
 114 Translator::finalize ()
 115 {
 116 }
 117
 118
 119 /*
 120
 121   SMOBS
 122
 123 */
 124 SCM
 125 Translator::mark_smob (SCM sm)
 126 {
 127   Translator * me = (Translator*) SCM_CELL_WORD_1 (sm);
 128   scm_gc_mark (me->simple_trans_list_);
 129   scm_gc_mark (me->trans_group_list_);
 130   scm_gc_mark (me->definition_);
 131   scm_gc_mark (me->properties_scm_);
 132
 133   return me->properties_scm_;
 134 }
 135
 136 SCM
 137 Translator::translator_description () const
 138 {
 139   return SCM_EOL;
 140 }
 141
 142 SCM
 143 Translator::static_translator_description ()const
 144 {
 145   return SCM_EOL;
 146 }
 147
 148
 149 IMPLEMENT_SMOBS (Translator);
 150 IMPLEMENT_DEFAULT_EQUAL_P (Translator);
 151 IMPLEMENT_TYPE_P(Translator,"ly:translator?");
 152