lily/scm-hash.cc

   1 /*
   2   scm-hash.cc --  implement Scheme_hash_table
   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 "scm-hash.hh"
  11 #include "hash-table-iter.hh"
  12
  13 Scheme_hash_table::Scheme_hash_table ()
  14 {
  15   hash_func_ = ly_scm_hash;
  16   self_scm_ = SCM_EOL;
  17   smobify_self ();
  18 }
  19
  20 void
  21 Scheme_hash_table::operator =(Scheme_hash_table const & src)
  22 {
  23   Hash_table<SCM,SCM>::operator = (src);
  24
  25   // we do not copy the self_scm_ field!
  26 }
  27
  28 void
  29 Scheme_hash_table::do_smobify_self ()
  30 {
  31 }
  32
  33 #include "ly-smobs.icc"
  34 IMPLEMENT_SMOBS(Scheme_hash_table);
  35
  36 SCM
  37 Scheme_hash_table::mark_smob (SCM s)
  38 {
  39   /*
  40     can't typecheck naively, since GC bit lives in CAR of S
  41    */
  42   //assert (SMOB_IS_TYPE_B (Scheme_hash_table, s));
  43
  44   Scheme_hash_table *me = SMOB_TO_TYPE(Scheme_hash_table,s);
  45   for (Hash_table_iter<SCM,SCM> i (*me); i.ok(); i++)
  46     {
  47       scm_gc_mark (i.key());
  48       scm_gc_mark (i.val ());
  49     }
  50   return SCM_EOL;
  51 }
  52
  53
  54 Scheme_hash_table::Scheme_hash_table (Scheme_hash_table const &src)
  55   : Hash_table<SCM,SCM> (src)
  56 {
  57   hash_func_ = src.hash_func_;
  58   self_scm_ = SCM_EOL;
  59   smobify_self ();
  60 }
  61
  62 int
  63 Scheme_hash_table::print_smob (SCM s, SCM p, scm_print_state*)
  64 {
  65   assert (SMOB_IS_TYPE_B (Scheme_hash_table, s));
  66   Scheme_hash_table *me = SMOB_TO_TYPE(Scheme_hash_table,s);
  67   for (Hash_table_iter<SCM,SCM> i (*me); i.ok(); i++)
  68     {
  69       scm_display (i.key(), p);
  70       scm_puts (" = ",p);
  71       scm_display (i.val (), p);
  72       scm_puts ("\n",p);
  73     }
  74   return 1;
  75 }
  76
  77
  78
  79
  80 Scheme_hash_table::~Scheme_hash_table( )
  81 {
  82   unsmobify_self ();
  83 }
  84
  85 SCM
  86 Scheme_hash_table::to_alist () const
  87 {
  88   SCM l = SCM_EOL;
  89   for (Hash_table_iter<SCM,SCM> i (*this); i.ok(); i++)
  90     l = gh_cons (gh_cons (i.key (), i.val()), l);
  91   return l;
  92 }
  93