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package CSAF::Util::List;
use 5.010001;
use strict;
use warnings;
use utf8;
use Moo;
use overload '@{}' => \&to_array, fallback => 1;
has items => (is => 'rw', default => sub { [] });
around BUILDARGS => sub {
my ($orig, $class, @args) = @_;
return {items => \@args} if @args > 0; # TODO
return $class->$orig(@args);
};
sub size { scalar @{shift->items} }
sub each {
my ($self, $callback) = @_;
return @{$self->items} unless $callback;
my $idx = 0;
$_->$callback($idx++) for @{$self->items};
return $self;
}
sub grep {
my ($self, $callback) = @_;
return $self->new(grep { $_->$callback(@_) } @{$self->items});
}
sub map {
my ($self, $callback) = @_;
return $self->new(map { $_->$callback(@_) } @{$self->items});
}
sub to_array { [@{shift->items}] }
sub item { push @{shift->items}, shift }
sub add { shift->item(@_) }
sub first { shift->items->[0] }
sub last { shift->items->[-1] }
sub join { join($_[1] // '', @{$_[0]->items}) }
sub TO_JSON { [@{shift->items}] }
1;
__END__
=encoding utf-8
=head1 NAME
CSAF::Util::List - (Mojo like) collection utility
=head1 SYNOPSIS
use CSAF::Util::List;
my $collection = CSAF::Util::List->new( qw[foo bar baz] );
=head1 DESCRIPTION
L<CSAF::Util::List> is a collection utility.
=head2 METHODS
=over
=item TO_JSON
Alias for L</"to_array">.
=item add
Alias for L</"item">.
=item each
Evaluate callback for each element in collection.
foreach my $item ($c->each) {
[...]
}
my $collection = $c->each(sub {...});
$c->each(sub {
my ($value, $idx) = @_;
[...]
});
=item first
Get the first element of collection.
=item grep
Filter items.
my $filtered = $c->grep(sub { $_ eq 'foo' });
=item item
Add a new item in collection.
$c->item('foo');
$c->item(sub {...});
=item items
Get the list of collection items.
=item join
Join elements in collection.
$c->join(', ');
=item last
Get the last element of collection.
=item map
Evaluate the callback and create a new collection.
CSAF::Util::List->new(1,2,3)->map(sub { $_ * 2 });
=item new
Create a new collection.
my $c = CSAF::Util::List->new( [foo bar baz] );
=item size
Number of item elements.
=item to_array
Return the collection array.
=back
=head1 SUPPORT
=head2 Bugs / Feature Requests
Please report any bugs or feature requests through the issue tracker
at L<https://github.com/giterlizzi/perl-CSAF/issues>.
You will be notified automatically of any progress on your issue.
=head2 Source Code
This is open source software. The code repository is available for
public review and contribution under the terms of the license.
L<https://github.com/giterlizzi/perl-CSAF>
git clone https://github.com/giterlizzi/perl-CSAF.git
=head1 AUTHOR
=over 4
=item * Giuseppe Di Terlizzi <gdt@cpan.org>
=back
=head1 LICENSE AND COPYRIGHT
This software is copyright (c) 2023-2025 by Giuseppe Di Terlizzi.
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
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