Better be on irc.perl.org

[perl/modules/Sub-Nary.git] / lib / Sub / Nary.pm

diff --git a/lib/Sub/Nary.pm b/lib/Sub/Nary.pm
index ee5fb6491ca60410c857f3f0d546b35ba0f9a54d..ec00eb18a72e3280c048cda6b7f2e75ed63dfd68 100644 (file)
--- a/lib/Sub/Nary.pm
+++ b/lib/Sub/Nary.pm
@@ -15,13 +15,13 @@ Sub::Nary - Try to count how many elements a subroutine can return in list conte
 
 =head1 VERSION
 
-Version 0.02
+Version 0.03
 
 =cut
 
 our $VERSION;
 BEGIN {
- $VERSION  = '0.02';
+ $VERSION  = '0.03';
 }
 
 =head1 SYNOPSIS
@@ -59,7 +59,9 @@ The probability is computed as such :
 
 =over 4
 
-=item * When branching, each branch is considered equally possible.
+=item *
+
+When branching, each branch is considered equally possible.
 
 For example, the subroutine
 
@@ -85,7 +87,9 @@ As for
 
 it is considered to return C<3> scalars with probability C<1/2>, C<2> with probability C<1/2 * 1/2 = 1/4> and C<1> (when the two tests fail, the last computed value is returned, which here is C<< $x > 0.9 >> evaluated in the scalar context of the test) with remaining probability C<1/4>.
 
-=item * The total probability law for a given returning point is the convolution product of the probabilities of its list elements.
+=item *
+
+The total probability law for a given returning point is the convolution product of the probabilities of its list elements.
 
 As such, 
 
@@ -101,11 +105,15 @@ returns C<3> or C<4> arguments with probability C<1/2> ; and
 
 never returns C<1> argument but returns C<2> with probability C<1/2 * 1/2 = 1/4>, C<3> with probability C<1/2 * 1/2 + 1/2 * 1/2 = 1/2> and C<4> with probability C<1/4> too.
 
-=item * If a core function may return different numbers of scalars, each kind is considered equally possible.
+=item *
+
+If a core function may return different numbers of scalars, each kind is considered equally possible.
 
 For example, C<stat> returns C<13> elements on success and C<0> on error. The according probability will then be C<< { 0 => 0.5, 13 => 0.5 } >>.
 
-=item * The C<list> state is absorbing in regard of all the other ones.
+=item *
+
+The C<list> state is absorbing in regard of all the other ones.
 
 This is just a pedantic way to say that "list + fixed length = list".
 That's why
@@ -230,7 +238,6 @@ sub enter {
  my $r = add $self->inspect($op->first);
  shift @{$self->{cv}};
 
- $r = { $r => 1 } unless ref $r;
  $self->{cache}->{$tag} = { %$r };
  return undef, $r;
 }
@@ -344,11 +351,9 @@ sub pp_entersub {
  my ($self, $op) = @_;
 
  $op = $op->first while $op->flags & OPf_KIDS;
- return undef, 0 if null $op;
- if (name($op) eq 'pushmark') {
-  $op = $op->sibling;
-  return undef, 0 if null $op;
- }
+ # First must be a pushmark
+ $op = $op->sibling;
+ # Next must be non null - at worse it's the rv2cv
 
  my $r;
  my $c = 1;
@@ -448,6 +453,15 @@ sub pp_rv2av {
  $self->inspect($op);
 }
 
+sub pp_sassign {
+ my ($self, $op) = @_;
+
+ my $r = ($self->inspect($op->first))[0];
+
+ my $c = 1 - count $r;
+ return $r, $c ? { 1 => $c } : undef
+}
+
 sub pp_aassign {
  my ($self, $op) = @_;
 
@@ -592,11 +606,11 @@ L<Carp> (standard since perl 5), L<B> (since perl 5.005) and L<XSLoader> (since
 
 Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
 
-You can contact me by mail or on #perl @ FreeNode (vincent or Prof_Vince).
+You can contact me by mail or on C<irc.perl.org> (vincent).
 
 =head1 BUGS
 
-Please report any bugs or feature requests to C<bug-b-nary at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Sub-Nary>.  I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
+Please report any bugs or feature requests to C<bug-sub-nary at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Sub-Nary>.  I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
 
 =head1 SUPPORT