File Coverage

blib/lib/Math/NumSeq/OEIS.pm

Criterion	Covered	Total	%
statement	32	35	91.4
branch	2	4	50.0
condition	1	3	33.3
subroutine	9	10	90.0
pod	3	3	100.0
total	47	55	85.4

# Copyright 2011, 2012, 2013, 2014, 2016 Kevin Ryde

# This file is part of Math-NumSeq.
#
# Math-NumSeq is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3, or (at your option) any later
# version.
#
# Math-NumSeq is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with Math-NumSeq.  If not, see .

package Math::NumSeq::OEIS;
use 5.004;
use strict;
use Carp;

use vars '$VERSION','@ISA';
$VERSION = 72;

use Math::NumSeq;
@ISA = ('Math::NumSeq');

# uncomment this to run the ### lines
#use Smart::Comments;


# use constant name => Math::NumSeq::__('OEIS');
use constant description => Math::NumSeq::__('OEIS sequence, by its A-number.  There\'s code for some sequences, others look in ~/OEIS directory for downloaded files A123456.internal, A123456.html and/or b123456.txt.');
use constant characteristic_integer => 1;

# recalculated each time for updated file min/max
sub parameter_info_array {
  require Math::NumSeq::OEIS::Catalogue;
  return [
          { name      => 'anum',
            type      => 'string',
            display   => Math::NumSeq::__('OEIS A-number'),
            type_hint => 'oeis_anum',
            width     => 8,
            minimum   => Math::NumSeq::OEIS::Catalogue->anum_first,
            maximum   => Math::NumSeq::OEIS::Catalogue->anum_last,
            default   => 'A000290', # Squares, an arbitrary choice
          },
         ];
}
### parameter_info_array parameter_info_array()

sub oeis_anum {
  my ($self) = @_;
  return $self->{'oeis_anum'};
}

sub new {
  my ($class, %options) = @_;
  ### Values-OEIS: @_

  my $anum = $options{'anum'};
  if (! defined $anum) {
    $anum = parameter_info_array()->[0]->{'default'};
  }
  ### $anum

  require Math::NumSeq::OEIS::Catalogue;
  my $info = Math::NumSeq::OEIS::Catalogue->anum_to_info($anum)
    || croak 'No data for OEIS sequence ',$anum;
  ### $info

  my $numseq_class = $info->{'class'};
  my $parameters = $info->{'parameters'};
  require Module::Load;
  Module::Load::load($numseq_class);
  return $numseq_class->new (%options, ($parameters ? @$parameters : ()));
}

1;
__END__