#include "profile.hh"
#include "simple-closure.hh"
#include "warn.hh"
+#include "protected-scm.hh"
+
+Protected_scm grob_property_callback_stack = SCM_EOL;
+
+extern bool debug_property_callbacks;
#ifndef NDEBUG
+static void
+print_property_callback_stack ()
+{
+ int frame = 0;
+ for (SCM s = grob_property_callback_stack; scm_is_pair (s); s = scm_cdr (s))
+ message (_f ("%d: %s", frame++, ly_scm_write_string (scm_car (s)).c_str ()));
+}
+#endif
+
static SCM modification_callback = SCM_EOL;
+static SCM cache_callback = SCM_EOL;
+
+
+/*
+
+FIXME: this should use ly:set-option interface instead.
+
+*/
LY_DEFINE (ly_set_grob_modification_callback, "ly:set-grob-modification-callback",
1, 0, 0, (SCM cb),
- "Specify a procedure that will be called every time lilypond modifies "
- "a grob property. The callback will receive as arguments "
- "the grob that is being modified, "
- "the name of the C++ file in which the modification was requested, "
- "the line number in the C++ file in which the modification was requested, "
- "the name of the function in which the modification was requested, "
- "the property to be changed and "
- "the new value for the property.")
+ "Specify a procedure that will be called every time LilyPond"
+ " modifies a grob property. The callback will receive as"
+ " arguments the grob that is being modified, the name of the"
+ " C++ file in which the modification was requested, the line"
+ " number in the C++ file in which the modification was requested,"
+ " the name of the function in which the modification was"
+ " requested, the property to be changed, and the new value for"
+ " the property.")
{
- LY_ASSERT_TYPE (ly_is_procedure, cb, 1);
+ modification_callback = (ly_is_procedure (cb)) ? cb : SCM_BOOL_F;
+ return SCM_UNSPECIFIED;
+}
- modification_callback = cb;
+LY_DEFINE (ly_set_property_cache_callback, "ly:set-property-cache-callback",
+ 1, 0, 0, (SCM cb),
+ "Specify a procedure that will be called whenever lilypond"
+ " calculates a callback function and caches the result. The"
+ " callback will receive as arguments the grob whose property it"
+ " is, the name of the property, the name of the callback that"
+ " calculated the property, and the new (cached) value of the"
+ " property.")
+{
+ cache_callback = (ly_is_procedure (cb)) ? cb : SCM_BOOL_F;
return SCM_UNSPECIFIED;
}
+
void
Grob::instrumented_set_property (SCM sym, SCM v,
char const *file,
int line,
char const *fun)
{
+#ifndef NDEBUG
if (ly_is_procedure (modification_callback))
scm_apply_0 (modification_callback,
scm_list_n (self_scm (),
scm_from_int (line),
scm_from_locale_string (fun),
sym, v, SCM_UNDEFINED));
+#else
+ (void) file;
+ (void) line;
+ (void) fun;
+#endif
+
internal_set_property (sym, v);
}
-#endif
SCM
Grob::get_property_alist_chain (SCM def) const
SCM_UNDEFINED);
}
-
extern void check_interfaces_for_property (Grob const *me, SCM sym);
void
#ifndef NDEBUG
if (val == ly_symbol2scm ("calculation-in-progress"))
- programming_error (_f ("cyclic dependency: calculation-in-progress encountered for #'%s (%s)",
- ly_symbol2string (sym).c_str (),
- name ().c_str ()));
+ {
+ programming_error (_f ("cyclic dependency: calculation-in-progress encountered for #'%s (%s)",
+ ly_symbol2string (sym).c_str (),
+ name ().c_str ()));
+ if (debug_property_callbacks)
+ {
+ message ("backtrace: ");
+ print_property_callback_stack ();
+ }
+ }
#endif
if (ly_is_procedure (val)
return val;
}
-#ifndef NDEBUG
-#include "protected-scm.hh"
+/* Unlike internal_get_property, this function does no caching. Use it, therefore, with caution. */
+SCM
+Grob::internal_get_pure_property (SCM sym, int start, int end) const
+{
+ SCM val = internal_get_property_data (sym);
+ if (ly_is_procedure (val))
+ return call_pure_function (val, scm_list_1 (self_scm ()), start, end);
+ if (is_simple_closure (val))
+ return evaluate_with_simple_closure (self_scm (),
+ simple_closure_expression (val),
+ true, start, end);
+ return val;
+}
-Protected_scm grob_property_callback_stack = SCM_EOL;
-bool debug_property_callbacks = 0;
-#endif
+SCM
+Grob::internal_get_maybe_pure_property (SCM sym, bool pure, int start, int end) const
+{
+ return pure ? internal_get_pure_property (sym, start, end) : internal_get_property (sym);
+}
SCM
Grob::try_callback_on_alist (SCM *alist, SCM sym, SCM proc)
#ifndef NDEBUG
if (debug_property_callbacks)
- grob_property_callback_stack = scm_acons (sym, proc, grob_property_callback_stack);
+ grob_property_callback_stack = scm_cons (scm_list_3 (self_scm (), sym, proc), grob_property_callback_stack);
#endif
SCM value = SCM_EOL;
*alist = scm_assq_remove_x (*alist, marker);
}
else
- internal_set_value_on_alist (alist, sym, value);
+ {
+#ifndef NDEBUG
+ if (ly_is_procedure (cache_callback))
+ scm_apply_0 (cache_callback,
+ scm_list_n (self_scm (),
+ sym,
+ proc,
+ value,
+ SCM_UNDEFINED));
+#endif
+ internal_set_value_on_alist (alist, sym, value);
+ }
return value;
}
scm_list_4 (unpure, args, scm_from_int (start), scm_from_int (end)));
}
-
-/*
- PROP_PATH should be big-to-small ordering
- */
-SCM
-nested_property_alist (SCM alist, SCM prop_path, SCM value)
-{
- SCM new_value = SCM_BOOL_F;
- if (scm_is_pair (scm_cdr (prop_path)))
- {
- SCM sub_alist = ly_assoc_get (scm_car (prop_path), alist, SCM_EOL);
- new_value = nested_property_alist (sub_alist, scm_cdr (prop_path), value);
- }
- else
- {
- new_value = value;
- }
-
- return scm_acons (scm_car (prop_path), new_value, alist);
-}
-
-
-void
-set_nested_property (Grob *me, SCM property_path, SCM value)
-{
- SCM big_to_small = scm_reverse (property_path);
- SCM alist = me->get_property (scm_car (big_to_small));
-
- alist = nested_property_alist (alist, scm_cdr (big_to_small), value);
-
- me->set_property (scm_car (big_to_small),
- alist);
-}
-
projects / lilypond.git / blobdiff