Rewrite zero in XS

diff --git a/Nary.xs b/Nary.xs
index 63f8cab646f7da48fb21ae1e2ef74a06f0bd6eda..2415760185f879bcddfba0c20c1ade5d93ab449f 100644 (file)
--- a/Nary.xs
+++ b/Nary.xs
@@ -33,6 +33,23 @@ CODE:
  ST(0) = sv_2mortal(newSVuv(o == NULL));
  XSRETURN(1);
 
+void
+zero(SV *sv)
+PROTOTYPE: $
+PREINIT:
+ HV *hv;
+ IV res;
+CODE:
+ if (!SvOK(sv))
+  XSRETURN_IV(1);
+ if (!SvROK(sv)) {
+  res = SvNOK(sv) ? SvNV(sv) == 0.0 : SvUV(sv) == 0;
+  XSRETURN_IV(res);
+ }
+ hv = (HV *) SvRV(sv);
+ res = hv_exists(hv, "0", 1) && hv_iterinit(hv) == 1;
+ XSRETURN_IV(res);
+
 void
 count(SV *sv)
 PROTOTYPE: $

diff --git a/lib/Sub/Nary.pm b/lib/Sub/Nary.pm
index f538fc7c9eddbe327daa52c6f27630a76285b44d..53aabd8cd022c8c7123b898fdd62201bc855c657 100644 (file)
--- a/lib/Sub/Nary.pm
+++ b/lib/Sub/Nary.pm
@@ -178,13 +178,6 @@ sub name ($) {
  $n eq 'null' ? substr(ppname($_[0]->targ), 3) : $n
 }
 
-sub zero ($) {
- my $r = $_[0];
- return 1 unless defined $r;
- return $r eq '0' unless ref $r;
- return $r->{0} and 1 == scalar keys %$r;
-}
-
 sub list ($) {
  my $r = $_[0];
  return 0 unless defined $r;