lily/translator.cc

   1 /*
   2   translator.cc -- implement Translator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2004 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 "context-def.hh"
  14 #include "global-context.hh"
  15 #include "moment.hh"
  16 #include "context.hh"
  17 #include "ly-smobs.icc"
  18
  19
  20 Translator::~Translator ()
  21 {
  22 }
  23
  24 void
  25 Translator::init ()
  26 {
  27   self_scm_ = SCM_EOL;
  28   simple_trans_list_ = SCM_BOOL_F;
  29   daddy_context_ =0;
  30   smobify_self ();
  31 }
  32
  33 void
  34 Translator::do_announces ()
  35 {
  36 }
  37
  38 void
  39 Translator::process_music ()
  40 {
  41
  42 }
  43
  44 Translator::Translator ()
  45 {
  46   init ();
  47 }
  48
  49 Translator::Translator (Translator const &)
  50 {
  51   init ();
  52 }
  53
  54 bool
  55 Translator::try_music (Music *)
  56 {
  57   return false;
  58 }
  59
  60
  61 Moment
  62 Translator::now_mom () const
  63 {
  64   return daddy_context_->now_mom ();
  65 }
  66
  67 Output_def *
  68 Translator::get_output_def () const
  69 {
  70   return daddy_context_->get_output_def ();
  71 }
  72
  73
  74 Translator_group*
  75 Translator::get_daddy_translator () const
  76 {
  77   return daddy_context_->implementation ();
  78 }
  79
  80
  81 SCM
  82 Translator::internal_get_property (SCM sym) const
  83 {
  84   return daddy_context_->internal_get_property (sym);
  85 }
  86
  87 void
  88 Translator::stop_translation_timestep ()
  89 {
  90 }
  91
  92 /*
  93   this function has 2 properties
  94
  95   - It is called before try_music ()
  96
  97   - It is called before any user information enters the translators.
  98   (i.e. any \property or event is not processed yet.)
  99
 100   */
 101 void
 102 Translator::start_translation_timestep ()
 103 {
 104 }
 105
 106 void
 107 Translator::initialize ()
 108 {
 109 }
 110
 111 void
 112 Translator::finalize ()
 113 {
 114 }
 115
 116
 117 /*
 118
 119   SMOBS
 120
 121 */
 122 SCM
 123 Translator::mark_smob (SCM sm)
 124 {
 125   Translator * me = (Translator*) SCM_CELL_WORD_1 (sm);
 126   return me->simple_trans_list_;
 127 }
 128
 129 SCM
 130 Translator::translator_description () const
 131 {
 132   return SCM_EOL;
 133 }
 134
 135
 136 Global_context *
 137 Translator::get_global_context () const
 138 {
 139   return daddy_context_ ->get_global_context ();
 140 }
 141
 142
 143 Score_context *
 144 Translator::get_score_context () const
 145 {
 146   return daddy_context_->get_score_context ();
 147 }
 148
 149
 150 SCM
 151 Translator::static_translator_description ()const
 152 {
 153   return SCM_EOL;
 154 }
 155
 156
 157 IMPLEMENT_SMOBS (Translator);
 158 IMPLEMENT_DEFAULT_EQUAL_P (Translator);
 159 IMPLEMENT_TYPE_P (Translator,"ly:translator?");