2 Implement storage and manipulation of grob properties.
9 #include "input-smob.hh"
10 #include "pointer-group-interface.hh"
12 #include "paper-score.hh"
13 #include "output-def.hh"
18 #include "program-option.hh"
22 Grob::get_property_alist_chain (SCM def) const
24 return scm_list_n (mutable_property_alist_,
25 immutable_property_alist_,
31 This special add_thing routine is slightly more efficient than
33 set_prop (name, cons (thing, get_prop (name)))
35 since it can reuse the handle returned by scm_assq ().
39 Grob::add_to_list_property (SCM sym, SCM thing)
42 = scm_sloppy_assq (sym, mutable_property_alist_);
44 if (handle != SCM_BOOL_F)
46 scm_set_cdr_x (handle, scm_cons (thing, scm_cdr (handle)));
51 There is no mutable prop yet, so create an entry, and put it in front of the
54 handle = scm_sloppy_assq (sym, immutable_property_alist_);
55 SCM tail = (handle != SCM_BOOL_F) ? scm_cdr (handle) : SCM_EOL;
56 SCM val = scm_cons (thing, tail);
58 mutable_property_alist_ = scm_cons (scm_cons (sym, val),
59 mutable_property_alist_);
64 extern void check_interfaces_for_property (Grob const *me, SCM sym);
67 Grob::internal_set_property (SCM sym, SCM v)
70 SCM grob_p = ly_lily_module_constant ("ly:grob?");
71 SCM grob_list_p = ly_lily_module_constant ("grob-list?");
72 SCM type = scm_object_property (sym, ly_symbol2scm ("backend-type?"));
75 || type == grob_list_p
76 || (unsmob_grob (v) && ly_symbol2scm ("cause") != sym))
78 scm_display (scm_list_2 (sym, type), scm_current_output_port ());
83 /* Perhaps we simply do the assq_set, but what the heck. */
87 if (do_internal_type_checking_global)
89 if (!type_check_assignment (sym, v, ly_symbol2scm ("backend-type?")))
91 check_interfaces_for_property (this, sym);
94 mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, sym, v);
97 //#define PROFILE_PROPERTY_ACCESSES
102 Grob::internal_get_property (SCM sym) const
105 if (profile_property_accesses)
107 note_property_access (&grob_property_lookup_table, sym);
111 SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
115 s = scm_sloppy_assq (sym, immutable_property_alist_);
117 if (do_internal_type_checking_global && scm_is_pair (s))
119 if (!type_check_assignment (sym, scm_cdr (s),
120 ly_symbol2scm ("backend-type?")))
123 check_interfaces_for_property (this, sym);
126 return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
131 Grob::internal_set_object (SCM s, SCM v)
133 /* Perhaps we simply do the assq_set, but what the heck. */
137 object_alist_ = scm_assq_set_x (object_alist_, s, v);
141 Grob::internal_get_object (SCM sym) const
143 #ifdef PROFILE_PROPERTY_ACCESSES
144 note_property_access (&grob_property_lookup_table, sym);
147 SCM s = scm_sloppy_assq (sym, object_alist_);
149 return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
153 Grob::substitute_object_links (SCM crit, SCM orig)
155 set_break_subsititution (crit);
156 object_alist_ = substitute_object_alist (orig, object_alist_);
160 Grob::is_live () const
162 return immutable_property_alist_ != SCM_EOL;