-/*
- object-key.cc -- implement Object_key
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
-*/
-
-#include "lilypond-key.hh"
-#include "ly-smobs.icc"
-
-SCM
-Object_key::mark_smob (SCM key)
-{
- Object_key *k = (Object_key *) SCM_CELL_WORD_1 (key);
- k->derived_mark ();
- return SCM_EOL;
-}
-
-void
-Object_key::derived_mark () const
-{
-}
-
-Object_key::~Object_key ()
-{
-}
-
-int
-Object_key::get_type () const
-{
- return GENERAL_KEY;
-}
-
-int
-Object_key::print_smob (SCM smob, SCM port, scm_print_state*)
-{
- Object_key *k = (Object_key *) SCM_CELL_WORD_1 (smob);
- scm_puts ("#<Object_key ", port);
- scm_display (scm_from_int (k->get_type ()), port);
- scm_puts (">", port);
- return 1;
-}
-
-Object_key::Object_key ()
-{
- smobify_self ();
-}
-
-int
-Object_key::compare (Object_key const *other) const
-{
- if (this == other)
- return 0;
-
- int c = sign (get_type () - other->get_type ());
- if (c)
- return c;
- else
- return do_compare (other);
-}
-
-IMPLEMENT_SMOBS (Object_key);
-
-SCM
-Object_key::equal_p (SCM a, SCM b)
-{
- Object_key *ka = unsmob_key (a);
- Object_key *kb = unsmob_key (b);
-
- return (ka->compare (kb)) ? SCM_BOOL_F : SCM_BOOL_T;
-}
-
-int
-Object_key::do_compare (Object_key const *) const
-{
- return 0;
-}
-
-SCM
-Object_key::dump () const
-{
- return scm_cons (scm_from_int (get_type ()),
- as_scheme ());
-}
-
-SCM
-Object_key::as_scheme () const
-{
- return SCM_EOL;
-}
-
-Object_key *
-Object_key::from_scheme (SCM)
-{
- return new Object_key ();
-}
-
-struct Object_dumper_table_entry
-{
- Object_key_type type_;
- Object_key *(*ctor_) (SCM);
-};
-
-static Object_dumper_table_entry undumpers[]
-= {
- {BASE_KEY, Object_key::from_scheme},
- {COPIED_KEY, Copied_key::from_scheme},
- {GENERAL_KEY, Lilypond_general_key::from_scheme},
- {GROB_KEY, Lilypond_grob_key::from_scheme},
- {CONTEXT_KEY, Lilypond_context_key::from_scheme},
- {KEY_COUNT, 0},
-};
-
-Object_key *
-Object_key::undump (SCM scm_key)
-{
- int t = scm_to_int (scm_car (scm_key));
- assert (t == undumpers[t].type_);
- return (undumpers[t].ctor_) (scm_cdr (scm_key));
-}
-
-/****************************************************************/
-
-Copied_key::Copied_key (Object_key const *key, int count)
-{
- copy_count_ = count;
- original_ = key;
-}
-
-int
-Copied_key::get_type () const
-{
- return COPIED_KEY;
-}
-
-int
-Copied_key::do_compare (Object_key const *key) const
-{
- Copied_key const *other = dynamic_cast<Copied_key const *> (key);
-
- int c = original_->compare (other->original_);
- if (c)
- return c;
-
- return sign (copy_count_ - other->copy_count_);
-}
-
-void
-Copied_key::derived_mark () const
-{
- scm_gc_mark (original_->self_scm ());
-}
-
-SCM
-Copied_key::as_scheme () const
-{
- return scm_list_2 (original_ ? original_->self_scm () : SCM_BOOL_F, scm_from_int (copy_count_));
-}
-
-Object_key *
-Copied_key::from_scheme (SCM a)
-{
- return new Copied_key (unsmob_key (scm_car (a)),
- scm_to_int (scm_list_ref (a, scm_from_int (1))));
-}