lily/identifier.cc

   1 /*
   2   identifier.cc -- implement identifier and derived classes
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9
  10 /*
  11   JUNKTHIS!
  12  */
  13 #include <assert.h>
  14
  15 #include "music-output-def.hh"
  16 #include "score.hh"
  17 #include "identifier.hh"
  18 #include "my-lily-lexer.hh"
  19 #include "debug.hh"
  20 #include "ly-smobs.icc"
  21
  22
  23 IMPLEMENT_UNSMOB(Identifier, identifier);
  24 IMPLEMENT_SMOBS(Identifier);
  25 IMPLEMENT_DEFAULT_EQUAL_P(Identifier);
  26
  27 Identifier::Identifier (int code)
  28 {
  29   token_code_i_ = code;
  30   accessed_b_ = 0;
  31   smobify_self ();
  32 }
  33
  34 Identifier::Identifier (Identifier const&s)
  35   : Input (s)
  36 {
  37   smobify_self ();
  38   token_code_i_ = s.token_code_i_;
  39   accessed_b_ = s.accessed_b_;
  40 }
  41
  42 Identifier::~Identifier()
  43 {
  44 }
  45
  46 void
  47 Identifier::error (String expect) const
  48 {
  49   ::error (_f ("wrong identifier type, expected: `%s'", expect));
  50 }
  51
  52 String
  53 Identifier::str () const
  54 {
  55   return do_str ();
  56 }
  57
  58 String
  59 Identifier::do_str () const
  60 {
  61   return "";
  62 }
  63
  64
  65 /* ugh. */
  66 #define DUMMY_STR(Class) \
  67 String \
  68 Class ## _identifier::do_str () const { \
  69   return String (#Class); \
  70 }
  71
  72 DUMMY_STR(Score);
  73 DUMMY_STR(Music_output_def);
  74
  75
  76 #define DEFAULT_STR(Class) \
  77 String \
  78 Class ## _identifier::do_str () const\
  79 {\
  80   return to_str (*data_p_);\
  81 }
  82
  83
  84
  85 /*
  86   fucking C++ blows me.
  87  */
  88
  89 #define DEFAULT_ACCESSOR(Class)\
  90 Class*\
  91 Class ## _identifier::access_content_ ## Class (bool copy_b) const {\
  92   ((Class ## _identifier*)this)->accessed_b_ = true;\
  93   return copy_b ? new Class (*data_p_) : data_p_;\
  94 }
  95
  96 #define VIRTUAL_ACCESSOR(Class)\
  97 Class*\
  98 Class ## _identifier::access_content_ ## Class (bool copy_b) const{\
  99   ((Class ## _identifier*)this)->accessed_b_ = true;\
 100   return copy_b ? dynamic_cast<Class*> (data_p_->clone()) : data_p_;\
 101 }
 102
 103 #define IMPLEMENT_ID_CLASS(Class)       \
 104         Class ## _identifier::~Class ## _identifier() { delete data_p_; }\
 105         Class ## _identifier::Class ## _identifier (Class*st, int code) \
 106           :Identifier (code)\
 107         {\
 108           data_p_ = st;\
 109         }\
 110 Class ## _identifier::Class ## _identifier (Class ## _identifier const &s) \
 111   : Identifier (s)\
 112 {\
 113    data_p_ = s.access_content_ ## Class (true);\
 114 }
 115
 116
 117 IMPLEMENT_ID_CLASS(Score);
 118 IMPLEMENT_ID_CLASS(Music_output_def);
 119 VIRTUAL_ACCESSOR(Music_output_def);
 120 DEFAULT_ACCESSOR(Score);
 121
 122
 123 int
 124 Identifier::print_smob (SCM s, SCM p, scm_print_state*)
 125 {
 126  return 1;
 127 }
 128
 129 SCM
 130 Identifier::mark_smob (SCM s)
 131 {
 132   return SCM_EOL;
 133 }
 134
 135
 136