actually compile start-stack to something useful

[bpt/guile.git] / libguile / debug.c

diff --git a/libguile/debug.c b/libguile/debug.c
index 1f2acc9..27e9a10 100644 (file)
--- a/libguile/debug.c
+++ b/libguile/debug.c
@@ -445,8 +445,10 @@ scm_reverse_lookup (SCM env, SCM data)
   return SCM_BOOL_F;
 }
 
-SCM
-scm_start_stack (SCM id, SCM exp, SCM env)
+SCM_DEFINE (scm_sys_start_stack, "%start-stack", 2, 0, 0,
+            (SCM id, SCM thunk),
+           "Call @var{thunk} on an evaluator stack tagged with @var{id}.")
+#define FUNC_NAME s_scm_sys_start_stack
 {
   SCM answer;
   scm_t_debug_frame vframe;
@@ -456,27 +458,12 @@ scm_start_stack (SCM id, SCM exp, SCM env)
   vframe.vect = &vframe_vect_body;
   vframe.vect[0].id = id;
   scm_i_set_last_debug_frame (&vframe);
-  answer = scm_i_eval (exp, env);
+  answer = scm_call_0 (thunk);
   scm_i_set_last_debug_frame (vframe.prev);
   return answer;
 }
-
-SCM_SYNTAX(s_start_stack, "start-stack", scm_makacro, scm_m_start_stack);
-
-static SCM
-scm_m_start_stack (SCM exp, SCM env)
-#define FUNC_NAME s_start_stack
-{
-  exp = SCM_CDR (exp);
-  if (!scm_is_pair (exp) 
-      || !scm_is_pair (SCM_CDR (exp))
-      || !scm_is_null (SCM_CDDR (exp)))
-    SCM_WRONG_NUM_ARGS ();
-  return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env);
-}
 #undef FUNC_NAME
 
-
 /* {Debug Objects}
  *
  * The debugging evaluator throws these on frame traps.