2 Implement storage and manipulation of grob properties.
10 #include "input-smob.hh"
11 #include "pointer-group-interface.hh"
13 #include "paper-score.hh"
14 #include "output-def.hh"
19 #include "program-option.hh"
23 Grob::get_property_alist_chain (SCM def) const
25 return scm_list_n (mutable_property_alist_,
26 immutable_property_alist_,
32 This special add_thing routine is slightly more efficient than
34 set_prop (name, cons (thing, get_prop (name)))
36 since it can reuse the handle returned by scm_assq ().
40 Grob::add_to_list_property (SCM sym, SCM thing)
43 = scm_sloppy_assq (sym, mutable_property_alist_);
45 if (handle != SCM_BOOL_F)
46 scm_set_cdr_x (handle, scm_cons (thing, scm_cdr (handle)));
50 There is no mutable prop yet, so create an entry, and put it in front of the
53 handle = scm_sloppy_assq (sym, immutable_property_alist_);
54 SCM tail = (handle != SCM_BOOL_F) ? scm_cdr (handle) : SCM_EOL;
55 SCM val = scm_cons (thing, tail);
57 mutable_property_alist_ = scm_cons (scm_cons (sym, val),
58 mutable_property_alist_);
62 extern void check_interfaces_for_property (Grob const *me, SCM sym);
65 Grob::internal_set_property (SCM sym, SCM v)
68 SCM grob_p = ly_lily_module_constant ("ly:grob?");
69 SCM grob_list_p = ly_lily_module_constant ("grob-list?");
70 SCM type = scm_object_property (sym, ly_symbol2scm ("backend-type?"));
73 || type == grob_list_p
74 || (unsmob_grob (v) && ly_symbol2scm ("cause") != sym))
76 scm_display (scm_list_2 (sym, type), scm_current_output_port ());
81 /* Perhaps we simply do the assq_set, but what the heck. */
85 if (do_internal_type_checking_global)
87 if (!type_check_assignment (sym, v, ly_symbol2scm ("backend-type?")))
89 check_interfaces_for_property (this, sym);
92 mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, sym, v);
95 //#define PROFILE_PROPERTY_ACCESSES
99 Grob::internal_get_property (SCM sym) const
102 if (profile_property_accesses)
103 note_property_access (&grob_property_lookup_table, sym);
106 SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
110 s = scm_sloppy_assq (sym, immutable_property_alist_);
112 if (do_internal_type_checking_global && scm_is_pair (s))
114 if (!type_check_assignment (sym, scm_cdr (s),
115 ly_symbol2scm ("backend-type?")))
118 check_interfaces_for_property (this, sym);
121 return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
125 Grob::internal_set_object (SCM s, SCM v)
127 /* Perhaps we simply do the assq_set, but what the heck. */
131 object_alist_ = scm_assq_set_x (object_alist_, s, v);
135 Grob::internal_get_object (SCM sym) const
137 #ifdef PROFILE_PROPERTY_ACCESSES
138 note_property_access (&grob_property_lookup_table, sym);
141 SCM s = scm_sloppy_assq (sym, object_alist_);
143 return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
147 Grob::substitute_object_links (SCM crit, SCM orig)
149 set_break_subsititution (crit);
150 object_alist_ = substitute_object_alist (orig, object_alist_);
154 Grob::is_live () const
156 return immutable_property_alist_ != SCM_EOL;