-static int
-number_accidentals_from_sig (bool *different, SCM sig, Pitch *pitch,
- int bar_number, SCM laziness, bool ignore_octave)
+struct Accidental_result
+{
+ bool need_acc;
+ bool need_restore;
+
+ Accidental_result () {
+ need_restore = need_acc = false;
+ }
+
+ int score () const {
+ return need_acc ? 1 : 0
+ + need_restore ? 1 : 0;
+ }
+};
+
+Accidental_result
+check_pitch_against_signature (SCM key_signature, Pitch const &pitch,
+ int bar_number, SCM laziness, bool ignore_octave)