lily/interpretation-context-handle.cc

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