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package Perl::PrereqScanner::Scanner::Perl5;
BEGIN {
$Perl::PrereqScanner::Scanner::Perl5::VERSION = '0.101890';
}
use Moose;
with 'Perl::PrereqScanner::Scanner';
# ABSTRACT: scan for core Perl 5 language indicators of required modules
sub scan_for_prereqs {
my ($self, $ppi_doc, $req) = @_;
# regular use and require
my $includes = $ppi_doc->find('Statement::Include') || [];
for my $node ( @$includes ) {
# minimum perl version
if ( $node->version ) {
$req->add_minimum(perl => $node->version);
next;
}
# skipping pragmata
next if grep { $_ eq $node->module } qw{ strict warnings lib feature };
# inheritance
if (grep { $_ eq $node->module } qw{ base parent }) {
# rt#55713: skip arguments to base or parent, focus only on inheritance
my @meat = grep {
$_->isa('PPI::Token::QuoteLike::Words')
|| $_->isa('PPI::Token::Quote')
} $node->arguments;
my @parents = map { $self->_q_contents($_) } @meat;
$req->add_minimum($_ => 0) for @parents;
}
# regular modules
my $version = $node->module_version ? $node->module_version->content : 0;
# base has been core since perl 5.0
next if $node->module eq 'base' and not $version;
# rt#55851: 'require $foo;' shouldn't add any prereq
$req->add_minimum($node->module, $version) if $node->module;
}
}
1;
__END__
=pod
=head1 NAME
Perl::PrereqScanner::Scanner::Perl5 - scan for core Perl 5 language indicators of required modules
=head1 VERSION
version 0.101890
=head1 DESCRIPTION
This scanner will look for the following indicators:
=over 4
=item *
plain lines beginning with C<use> or C<require> in your perl modules and scripts, including minimum perl version
=item *
regular inheritance declared with the C<base> and C<parent> pragmata
=back
=head1 AUTHORS
Jerome Quelin
Ricardo Signes <rjbs@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2009 by Jerome Quelin.
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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