-SCM
-Paper_system::mark_smob (SCM smob)
-{
- Paper_system *system = (Paper_system *) SCM_CELL_WORD_1 (smob);
- scm_gc_mark (system->mutable_property_alist_);
- return system->immutable_property_alist_;
-}
-
-int
-Paper_system::print_smob (SCM smob, SCM port, scm_print_state*)
-{
- Paper_system *p = (Paper_system *) SCM_CELL_WORD_1 (smob);
- scm_puts ("#<", port);
- scm_puts ("Paper_system", port);
- scm_display (p->mutable_property_alist_, port);
- scm_display (p->immutable_property_alist_, port);
-
- scm_puts (" >\n", port);
- return 1;
-}
-
-void
-Paper_system::init_vars ()
-{
-
-}
-
-SCM
-Paper_system::internal_get_property (SCM sym) const
-{
- /*
- TODO: type checking
- */
- SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
- if (s != SCM_BOOL_F)
- return scm_cdr (s);
-
- s = scm_sloppy_assq (sym, immutable_property_alist_);
-
-
- return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
-}
-
-void
-Paper_system::internal_set_property (SCM sym, SCM val)
-{
- mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, sym, val);