lily/interpretation-context-handle.cc

   1 /*
   2
   3   interpretation-context-handle.cc --  implement Interpretation_context_handle
   4
   5   source file of the GNU LilyPond music typesetter
   6
   7   (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   8
   9  */
  10
  11 #include "interpretation-context-handle.hh"
  12 #include "translator-group.hh"
  13
  14 void
  15 Interpretation_context_handle::up (Translator_group*t)
  16 {
  17   report_to_l_ = t;
  18   t->iterator_count_ ++;
  19 }
  20
  21 void
  22 Interpretation_context_handle::down()
  23 {
  24   report_to_l_->iterator_count_ --;
  25   report_to_l_ = 0;
  26 }
  27
  28 bool
  29 Interpretation_context_handle::try_music (Music *m)
  30 {
  31   return  report_to_l_->try_music (m);
  32 }
  33
  34 Interpretation_context_handle::Interpretation_context_handle (Interpretation_context_handle const&s)
  35 {
  36   report_to_l_ =0;
  37   if (s.report_to_l_)
  38     up (s.report_to_l_ );
  39 }
  40
  41 void
  42 Interpretation_context_handle::operator = (Interpretation_context_handle const &s)
  43 {
  44   set_translator (s.report_to_l_);
  45 }
  46
  47 void
  48 Interpretation_context_handle::set_translator (Translator_group*trans)
  49 {
  50   if (report_to_l_ ==trans)
  51     return;
  52   if (report_to_l_)
  53     down ();
  54   if (trans)
  55     up (trans);
  56 }
  57
  58 Translator_group*
  59 Interpretation_context_handle::report_to_l ()const
  60 {
  61   return report_to_l_;
  62 }
  63
  64 Interpretation_context_handle::Interpretation_context_handle()
  65 {
  66   report_to_l_ =0;
  67 }
  68
  69 Interpretation_context_handle::~Interpretation_context_handle ()
  70 {
  71   if (report_to_l_)
  72     down ();
  73 }
  74