-bool is_simple_closure (SCM s);
-SCM simple_closure_expression (SCM smob);
-SCM evaluate_with_simple_closure (SCM delayed_argument, SCM expr);
-SCM ly_make_simple_closure (SCM);
+#include "lily-guile.hh"
+#include "small-smobs.hh"
+
+class Simple_closure : public Smob1<Simple_closure>
+{
+public:
+ SCM expression() const { return scm1 (); }
+ int print_smob (SCM, scm_print_state *);
+ static const char type_p_name_[];
+};
+
+SCM evaluate_with_simple_closure (SCM delayed_argument, SCM expr, bool pure, int start, int end);