/usr/share/perl5/Perl/PrereqScanner/Scanner/Moose.pm is in libperl-prereqscanner-perl 1.020-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | use strict;
use warnings;
package Perl::PrereqScanner::Scanner::Moose;
# ABSTRACT: scan for Moose sugar indicators of required modules
$Perl::PrereqScanner::Scanner::Moose::VERSION = '1.020';
use Moose;
with 'Perl::PrereqScanner::Scanner';
#pod =head1 DESCRIPTION
#pod
#pod This scanner will look for the following indicators:
#pod
#pod =begin :list
#pod
#pod * L<Moose> inheritance declared with the C<extends> keyword
#pod
#pod * L<Moose> roles included with the C<with> keyword
#pod
#pod =end :list
#pod
#pod =cut
sub scan_for_prereqs {
my ($self, $ppi_doc, $req) = @_;
# Moose-based roles / inheritance
my @chunks =
# This is what we get when someone does: with('Foo');
# The target to get at is the PPI::Token::Quote::Single.
# -- rjbs, 2010-09-05
#
# PPI::Statement
# PPI::Token::Word
# PPI::Structure::List
# PPI::Statement::Expression
# PPI::Token::Quote::Single
# PPI::Token::Structure
map { [ $_->schildren ] }
grep { $_->child(0)->literal =~ m{\A(?:with|extends)\z} }
grep { $_->child(0)->isa('PPI::Token::Word') }
@{ $ppi_doc->find('PPI::Statement') || [] };
foreach my $hunk ( @chunks ) {
# roles/inheritance *WITH* version declaration ( added in Moose 1.03 )
if ( grep { $_->isa('PPI::Structure::Constructor') || $_->isa('PPI::Structure::List') } @$hunk ) {
# hack for List
my @hunkdata = @$hunk;
while ( $hunkdata[0]->isa('PPI::Token::Whitespace') ) { shift @hunkdata }
if ( $hunkdata[1]->isa('PPI::Structure::List') ) {
@hunkdata = $hunkdata[1]->children;
next unless @hunkdata;
while ( $hunkdata[0]->isa('PPI::Token::Whitespace') ) { shift @hunkdata }
}
if ( $hunkdata[0]->isa('PPI::Statement::Expression') ) {
@hunkdata = $hunkdata[0]->children;
next unless @hunkdata;
}
# possibly contains a version declaration!
my( $pkg, $done );
foreach my $elem ( @hunkdata ) {
# Scan for the first quote-like word, which is the package name
if ( $elem->isa('PPI::Token::Quote') || $elem->isa('PPI::Token::QuoteLike') ) {
# found a new package and the previous one didn't have a version?
if ( defined $pkg ) {
$req->add_minimum( $pkg => 0 );
}
$pkg = ( $self->_q_contents( $elem ) )[0];
undef $done;
next;
}
# skip over the fluff and look for the version block
if ( $pkg and $elem->isa('PPI::Structure::Constructor') ) {
foreach my $subelem ( $elem->children ) {
# skip over the fluff and look for the real version code
if ( $subelem->isa('PPI::Statement') ) {
my $found_ver;
foreach my $code ( $subelem->children ) {
# skip over the fluff until we're sure we saw the version declaration
if ( $code->isa('PPI::Token::Word') and $code->literal eq '-version' ) {
$found_ver++;
next;
}
if ( $found_ver and ( $code->isa('PPI::Token::Quote') || $code->isa('PPI::Token::QuoteLike') || $code->isa('PPI::Token::Number') ) ) {
$req->add_minimum( $pkg => ( $self->_q_contents( $code ) )[0] );
$done++;
undef $pkg;
last;
}
}
# Did we fail to find the ver?
if ( $found_ver and ! $done ) {
die "Possible internal error!";
}
}
}
# Failed to find version-specific stuff
if ( ! $done ) {
$req->add_minimum( $pkg => 0 );
undef $pkg;
next;
}
}
}
# If we found a pkg but no done, this must be the "last" pkg to be declared and it has no version
if ( $pkg and ! $done ) {
$req->add_minimum( $pkg => 0 );
}
} else {
# no version or funky blocks in code, yay!
$req->add_minimum( $_ => 0 ) for
grep { Params::Util::_CLASS($_) }
map { $self->_q_contents( $_ ) }
grep { $_->isa('PPI::Token::Quote') || $_->isa('PPI::Token::QuoteLike') }
@$hunk;
}
}
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Perl::PrereqScanner::Scanner::Moose - scan for Moose sugar indicators of required modules
=head1 VERSION
version 1.020
=head1 DESCRIPTION
This scanner will look for the following indicators:
=over 4
=item *
L<Moose> inheritance declared with the C<extends> keyword
=item *
L<Moose> roles included with the C<with> keyword
=back
=head1 AUTHORS
=over 4
=item *
Jerome Quelin
=item *
Ricardo Signes <rjbs@cpan.org>
=back
=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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