+int
+procedure_arity (SCM proc)
+{
+ assert (ly_is_procedure (proc));
+ SCM arity = scm_procedure_property (proc,
+ ly_symbol2scm ("arity"));
+
+ SCM fixed = scm_car (arity);
+ return scm_to_int (fixed);
+}
+
+string
+mangle_cxx_identifier (string cxx_id)
+{
+ if (cxx_id.substr (0, 3) == "ly_")
+ cxx_id = cxx_id.replace (0, 3, "ly:");
+ else
+ {
+ cxx_id = String_convert::to_lower (cxx_id);
+ cxx_id = "ly:" + cxx_id;
+ }
+ if (cxx_id.substr (cxx_id.length () - 2) == "_p")
+ cxx_id = cxx_id.replace (cxx_id.length () - 2, 1, "?");
+ else if (cxx_id.substr (cxx_id.length () - 2) == "_x")
+ cxx_id = cxx_id.replace (cxx_id.length () - 2, 1, "!");
+
+ cxx_id = replace_all (cxx_id, '_', '-');
+ return cxx_id;
+}
+