File Coverage

blib/lib/Eval/WithLexicals/WithHintPersistence.pm

Criterion	Covered	Total	%
statement	19	19	100.0
branch	3	4	75.0
condition			n/a
subroutine	5	5	100.0
pod	0	1	0.0
total	27	29	93.1

package Eval::WithLexicals::WithHintPersistence;
use Moo::Role;
use Sub::Quote;

our $VERSION = '1.003005'; # 1.3.5
$VERSION = eval $VERSION;

has hints => (
  is => 'rw',
  default => quote_sub q{ {} },
);

has _first_eval => (
  is => 'rw',
  default => quote_sub q{ 1 },
);

around eval => sub {
  my $orig = shift;
  my($self) = @_;

  local *Eval::WithLexicals::Cage::capture_hints;
  local $Eval::WithLexicals::Cage::hints = { %{$self->hints} };

  my @ret = $orig->(@_);

  $self->hints({ Eval::WithLexicals::Cage::capture_hints() });

  @ret;
};

# XXX: Sub::Quote::capture_unroll without 'my'
use B();
sub _capture_unroll_global {
  my ($from, $captures, $indent) = @_;
  join(
    '',
    map {
      /^([\@\%\$])/
        or die "capture key should start with \@, \% or \$: $_";
      (' ' x $indent).qq{${_} = ${1}{${from}->{${\B::perlstring $_}}};\n};
    } keys %$captures
  );
}

sub setup_code {
  my($self) = @_;
  # Only run the prelude on the first eval, hints will be set after
  # that.
  if($self->_first_eval) {
    $self->_first_eval(0);
    return $self->prelude;
  } else {
    # Seems we can't use the technique of passing via @_ for code in a BEGIN
    # block
    return q[ BEGIN { ],
      _capture_unroll_global('$Eval::WithLexicals::Cage::hints', $self->hints, 2),
      q[ } ],
  }
};

around capture_code => sub {
  my $orig = shift;
  my($self) = @_;

  ( q{ sub Eval::WithLexicals::Cage::capture_hints {
          my ($hints, %hints, $warn_bits);
          BEGIN {
            no warnings 'closure';
            $hints = $^H;
            %hints = %^H;
            $warn_bits = ${^WARNING_BITS};
          }
          return (
            q{$^H}              => \$hints,
            q{%^H}              => \%hints,
            q{${^WARNING_BITS}} => \$warn_bits,
          );
        } },
    $orig->(@_) )
};

1;
__END__