/usr/share/perl5/Data/Stream/Bulk/Array.pm is in libdata-stream-bulk-perl 0.11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | package Data::Stream::Bulk::Array;
BEGIN {
$Data::Stream::Bulk::Array::AUTHORITY = 'cpan:NUFFIN';
}
{
$Data::Stream::Bulk::Array::VERSION = '0.11';
}
use Moose;
# ABSTRACT: L<Data::Stream::Bulk> wrapper for simple arrays.
use namespace::clean -except => 'meta';
with qw(Data::Stream::Bulk) => { -excludes => [qw/loaded filter list_cat/] };
has array => (
isa => "ArrayRef",
reader => "_array",
writer => "_set_array",
clearer => "_clear_array",
predicate => "_has_array",
required => 1,
);
sub is_done {
my $self = shift;
!$self->_has_array;
}
sub next {
my $self = shift;
if ( my $array = $self->_array ) {
$self->_clear_array;
return $array;
} else {
return;
}
}
# squish several arrays into one
sub list_cat {
my ( $self, @rest ) = @_;
return $self unless @rest;
my @arrays = ( $self );
# fetch all adjacent arrays
push @arrays, shift @rest while @rest and $rest[0]->isa(__PACKAGE__);
if ( @arrays > 1 ) {
my @cat;
push @cat, @$_ for map { $_->_array } @arrays;
return __PACKAGE__->new(
array => \@cat,
)->cat( @rest );
} else {
my $head = shift @rest;
return ( $self, $head->list_cat(@rest) );
}
}
sub filter {
my ( $self, $filter ) = @_;
local $_ = $self->next;
$self->_set_array( $filter->($_) );
return $self;
}
sub loaded { 1 }
__PACKAGE__->meta->make_immutable;
__PACKAGE__;
=pod
=head1 NAME
Data::Stream::Bulk::Array - L<Data::Stream::Bulk> wrapper for simple arrays.
=head1 VERSION
version 0.11
=head1 SYNOPSIS
return Data::Stream::Bulk::Array->new(
array => \@results,
);
=head1 DESCRIPTION
This implementation of the L<Data::Stream::Bulk> api wraps an array.
The use case is to keep the consumer of the data set implementation agnostic so
that it can deal with larger data sets if they are encountered, but still
retain most of the simplicity when the current data set easily fits in memory.
=head1 ATTRIBUTES
=over 4
=item array
The array reference to wrap.
=back
=head1 METHODS
=over 4
=item next
Returns the array reference on the first invocation, and nothing thereafter.
=item is_done
Returns true if C<next> has been called.
=item list_cat
Squishes adjacent arrays into a new array.
=item filter $filter
Immediately applies C<$filter> to the internal array and returns C<$self>.
=item loaded
Returns true
=back
=head1 AUTHOR
Yuval Kogman <nothingmuch@woobling.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Yuval Kogman.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
__END__
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