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be more like the interpreter in signalling wrong-num-args

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* libguile/vm-engine.c: Call scm_wrong_num_args in the wrong-num-args
  case, to be more like the interpreter.

* libguile/vm-engine.h (ASSERT): New macro.

* libguile/vm-i-system.c (apply, goto/apply): Assert that nargs >= 2,
  because the compiler should always feed us correct instructions.
  (call/cc): If no values are returned to the continuation, signal
  no_values instead of wrong_num_args.
This commit is contained in:
Andy Wingo 2008-10-02 11:00:55 +02:00
parent 7e91e01dd8
commit 9a8cc8e7f7
3 changed files with 15 additions and 7 deletions
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5
libguile/vm-engine.c
View file

@ -151,8 +151,9 @@ vm_run (SCM vm, SCM program, SCM args)
goto vm_error;
vm_error_wrong_num_args:
err_msg = scm_from_locale_string ("VM: Wrong number of arguments");
err_args = SCM_EOL;
/* nargs and program are valid */
scm_wrong_num_args (program);
/* shouldn't get here */
goto vm_error;
vm_error_wrong_type_apply:

9
libguile/vm-engine.h
View file

@ -127,6 +127,15 @@
* Cache/Sync
*/
#define ENABLE_ASSERTIONS
#ifdef ENABLE_ASSERTIONS
# define ASSERT(condition) if (SCM_UNLIKELY (!(condition))) abort()
#else
# define ASSERT(condition)
#endif
#define CACHE_REGISTER() \
{ \
ip = vp->ip; \

8
libguile/vm-i-system.c
View file

@ -840,8 +840,7 @@ VM_DEFINE_INSTRUCTION (apply, "apply", 1, -1, 1)
POP (ls);
nargs = FETCH ();
if (nargs < 2)
goto vm_error_wrong_num_args;
ASSERT (nargs >= 2);
len = scm_ilength (ls);
if (len < 0)
@ -861,8 +860,7 @@ VM_DEFINE_INSTRUCTION (goto_apply, "goto/apply", 1, -1, 1)
POP (ls);
nargs = FETCH ();
if (nargs < 2)
goto vm_error_wrong_num_args;
ASSERT (nargs >= 2);
len = scm_ilength (ls);
if (len < 0)
@ -895,7 +893,7 @@ VM_DEFINE_INSTRUCTION (call_cc, "call/cc", 0, 1, 1)
SCM values;
values = scm_struct_ref (cont, SCM_INUM0);
if (SCM_NULLP (values))
goto vm_error_wrong_num_args;
goto vm_error_no_values;
/* non-tail context does not accept multiple values? */
PUSH (SCM_CAR (values));
NEXT;