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Give multiple-values objects a tc7

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* libguile/scm.h (scm_tc7_values): New tc7.  Never seen by Scheme, so we
  don't need to update it anywhere else.
* libguile/values.h (scm_is_values): New public static inline function.
  (scm_i_nvalues, scm_i_value_ref): New private static inline
  functions.
  (SCM_VALUESP): Use scm_is_value.
  (scm_values_2, scm_values_3): New functions.
  (scm_values_vtable): Remove; values objects are not structs any more.
* libguile/values.c (scm_i_extract_values_2): Adapt to new values
  representation.
  (print_values): Remove now-unused function.
  (scm_c_nvalues): Use scm_i_nvalues.
  (scm_c_value_ref): Use scm_i_value_ref.
  (scm_values, scm_c_values): Make the new-style objects, which store
  their values inline.
  (scm_values_2, scm_values_3): New helpers, to avoid consing little
  useless lists.
* libguile/vm-engine.c (halt, subr-call)
* libguile/eval.c (eval): Adapt to new values representation.
* libguile/i18n.c (scm_locale_string_to_integer)
  (scm_locale_string_to_integer)
* libguile/numbers.c (scm_i_floor_divide, scm_i_ceiling_divide)
  (scm_i_truncate_divide, scm_i_centered_divide, scm_i_round_divide)
  (scm_i_exact_integer_sqrt)
* libguile/r6rs-ports.c (make_bytevector_output_port)
* libguile/srfi-1.c (scm_srfi1_partition, scm_srfi1_partition_x)
* libguile/srfi-14.c (scm_char_set_diff_plus_intersection)
  (scm_char_set_diff_plus_intersection_x)
* libguile/posix.c (scm_getrlimit, scm_open_process): Adapt to use
  scm_values_2 or scm_values_3.
* libguile/print.c (iprin1): Add printer for values objects.
This commit is contained in:
Andy Wingo 2018-06-25 15:49:34 +02:00
parent 08bf4aba30
commit 4a2d78b4d4
12 changed files with 123 additions and 98 deletions
Download patch file Download diff file Expand all files Collapse all files

22
libguile/vm-engine.c
View file

@ -342,11 +342,11 @@ VM_NAME (scm_i_thread *thread, jmp_buf *registers, int resume)
else
{
uint32_t n;
ret = SCM_EOL;
SYNC_IP ();
for (n = nvals; n > 0; n--)
ret = scm_inline_cons (thread, FP_REF (4 + n - 1), ret);
ret = scm_values (ret);
VM_ASSERT (nvals <= (UINTPTR_MAX >> 8), abort ());
ret = scm_words ((nvals << 8) | scm_tc7_values, nvals + 1);
for (n = 0; n < nvals; n++)
SCM_SET_CELL_OBJECT (ret, n+1, FP_REF (4 + n - 1));
}
VP->ip = SCM_FRAME_RETURN_ADDRESS (VP->fp);
@ -608,16 +608,12 @@ VM_NAME (scm_i_thread *thread, jmp_buf *registers, int resume)
ret = scm_apply_subr (sp, FRAME_LOCALS_COUNT ());
CACHE_SP ();
if (SCM_UNLIKELY (SCM_VALUESP (ret)))
if (SCM_UNLIKELY (scm_is_values (ret)))
{
SCM vals = scm_struct_ref (ret, SCM_INUM0);
long len = scm_ilength (vals);
ALLOC_FRAME (1 + len);
while (len--)
{
SP_SET (len, SCM_CAR (vals));
vals = SCM_CDR (vals);
}
size_t n, nvals = scm_i_nvalues (ret);
ALLOC_FRAME (1 + nvals);
for (n = 0; n < nvals; n++)
FP_SET (n + 1, scm_i_value_ref (ret, n));
NEXT (1);
}
else