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package Perl::ToPerl6::Transformer::Arrays::FormatArrayQws; |
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use 5.006001; |
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use strict; |
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use warnings; |
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use Readonly; |
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use Perl::ToPerl6::Utils qw{ :characters :severities }; |
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use Perl::ToPerl6::Utils::PPI qw{ is_ppi_token_quotelike_words_like }; |
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use base 'Perl::ToPerl6::Transformer'; |
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our $VERSION = '0.031'; |
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#----------------------------------------------------------------------------- |
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Readonly::Scalar my $DESC => q{Transform qw(...) to qw (...)}; |
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Readonly::Scalar my $EXPL => |
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q{qw<>, qw{} &c are fine, but qw() is now a function call. Add ' ' to avoid this}; |
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#----------------------------------------------------------------------------- |
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sub supported_parameters { return () } |
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sub default_severity { return $SEVERITY_HIGHEST } |
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sub default_themes { return qw(core bugs) } |
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sub applies_to { |
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return sub { |
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is_ppi_token_quotelike_words_like($_[1],qr{^qw\(}) |
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} |
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} |
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#----------------------------------------------------------------------------- |
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# |
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# Note to the reader: |
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# |
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# A PPI::Token::QuoteLike::Words object contains a single string which has the |
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# entire 'qw{...}' token. Therefore we can't add a Token::Whitespace between |
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# the 'qw' and '{..}' like we can with loops and conditionals. |
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# |
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sub transform { |
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my ($self, $elem, $doc) = @_; |
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my $old_content = $elem->content; |
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$old_content =~ s{^qw\(}{qw (}; |
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$elem->set_content( $old_content ); |
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return $self->transformation( $DESC, $EXPL, $elem ); |
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} |
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1; |
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#----------------------------------------------------------------------------- |
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__END__ |
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=pod |
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=head1 NAME |
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Perl::ToPerl6::Transformer::Array::FormatArrayQws - Format qw() to qw () |
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=head1 AFFILIATION |
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This Transformer is part of the core L<Perl::ToPerl6|Perl::ToPerl6> distribution. |
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=head1 DESCRIPTION |
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Perl6 qw() operates almost exactly like Perl5 qw() but with one corner case - C<qw(a b c)>, like any bareword followed by an open parenthesis, is treated as a function call. This Transformer places a whitespace between C<qw> and C<(...)> in order to disambiguate, like so: |
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qw(a b c) --> qw (a b c) |
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qw{a b c} --> qw{a b c} |
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qw<a b c> --> qw{a b c} |
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=head1 CONFIGURATION |
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This Transformer is not configurable except for the standard options. |
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=head1 AUTHOR |
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Jeffrey Goff <drforr@pobox.com> |
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=head1 COPYRIGHT |
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Copyright (c) 2015 Jeffrey Goff |
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This program is free software; you can redistribute it and/or modify |
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it under the same terms as Perl itself. |
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=cut |
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############################################################################## |
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# Local Variables: |
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# mode: cperl |
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# cperl-indent-level: 4 |
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# fill-column: 78 |
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# indent-tabs-mode: nil |
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# c-indentation-style: bsd |
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# End: |
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# ex: set ts=8 sts=4 sw=4 tw=78 ft=perl expandtab shiftround : |