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Current File : //proc/2/root/usr/local/share/perl5/Test/Deep/Stack.pm

use strict;
use warnings;

package Test::Deep::Stack;

use Carp qw( confess );
use Scalar::Util;

use Test::Deep::MM qw( new init Stack Arrow );

sub init
{
  my $self = shift;

  $self->SUPER::init(@_);

  $self->setStack([]) unless $self->getStack;
}

sub push
{
  my $self = shift;

  push(@{$self->getStack}, @_);
}

sub pop
{
  my $self = shift;

  return pop @{$self->getStack};
}

sub render
{
  my $self = shift;
  my $var = shift;

  my $stack = $self->getStack;

  $self->setArrow(0);

  foreach my $data (@$stack)
  {
    my $exp = $data->{exp};
    if (Scalar::Util::blessed($exp) and $exp->isa("Test::Deep::Cmp"))
    {
      $var = $exp->render_stack($var, $data);

      $self->setArrow(0) if $exp->reset_arrow;
    }
    else
    {
      confess "Don't know how to render '$exp'";
    }
  }

  return $var;
}

sub getLast
{
  my $self = shift;

  return $self->getStack->[-1];
}

sub incArrow
{
  my $self = shift;

  my $a = $self->getArrow;
  $self->setArrow($a + 1);

  return $a;
}

sub length
{
  my $self = shift;

  return @{$self->getStack} + 0;
}

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