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package Perl::ToPerl6::Transformer::CompoundStatements::FormatMapGreps; |
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11407
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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{ :severities }; |
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use Perl::ToPerl6::Utils::PPI qw{ is_ppi_token_word make_ppi_structure_block }; |
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use base 'Perl::ToPerl6::Transformer'; |
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7983
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our $VERSION = '0.03'; |
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#----------------------------------------------------------------------------- |
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Readonly::Scalar my $DESC => q{Transform 'given()' to 'given ()'}; |
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Readonly::Scalar my $EXPL => |
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q{unless() needs whitespace in order to not be interpreted as a function call}; |
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#----------------------------------------------------------------------------- |
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my %map = ( |
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map => 1, |
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grep => 1 |
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); |
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#----------------------------------------------------------------------------- |
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sub supported_parameters { return () } |
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sub default_severity { return $SEVERITY_HIGHEST } |
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sub default_themes { return qw(core bugs) } |
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sub applies_to { |
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return sub { |
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is_ppi_token_word($_[1], %map) and |
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$_[1]->snext_sibling |
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} |
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} |
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#----------------------------------------------------------------------------- |
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sub transform { |
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my ($self, $elem, $doc) = @_; |
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# |
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# XXX This is worrisome, as this test should not need to be done. |
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# XXX The applies_to() method above implies that $elem should have an |
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# XXX snext_sibling by the time it gets here. |
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# |
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0
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return unless $elem->snext_sibling; |
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my $token = $elem->snext_sibling; |
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0
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if ( $token->isa('PPI::Structure::Block') and |
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0
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0
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0
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$token->start and |
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$token->start eq '{' and |
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$token->finish and |
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$token->finish eq '}' ) { |
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0
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return if $token->snext_sibling and |
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0
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$token->snext_sibling->isa('PPI::Token::Operator') and |
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$token->snext_sibling->content eq ','; |
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0
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my $comma = PPI::Token::Operator->new(','); |
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0
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$token->insert_after( $comma ); |
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} |
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else { |
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0
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my $point = $token; |
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0
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my $new_block = make_ppi_structure_block; |
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my $new_statement = PPI::Statement->new; |
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$new_block->add_element($new_statement); |
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0
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while ( $token and $token->next_sibling ) { |
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last if $token->content eq ','; |
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$new_statement->add_element($token->clone); |
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$token = $token->next_sibling; |
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} |
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0
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$point->insert_before($new_block); |
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while ( $point and |
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0
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not ( $point->isa('PPI::Token::Operator') and |
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$point->content eq ',' ) ) { |
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0
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my $temp = $point->next_sibling; |
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$point->remove; |
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$point = $temp; |
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} |
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} |
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0
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return $self->transformation( $DESC, $EXPL, $elem ); |
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} |
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1; |
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#----------------------------------------------------------------------------- |
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__END__ |
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=pod |
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=head1 NAME |
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100
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Perl::ToPerl6::Transformer::CompoundStatements::FormatMapGreps - Format map{}, grep{} |
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102
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103
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=head1 AFFILIATION |
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105
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This Transformer is part of the core L<Perl::ToPerl6|Perl::ToPerl6> |
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distribution. |
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108
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109
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=head1 DESCRIPTION |
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Perl6 unifies C<map{}> and C<grep{}> with the rest of the function calls, in that the first argument must be a block, and the arguments must be separated with commas. This transformer adds the block where needed, and inserts the comma as required: |
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113
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map {$_++} @x; --> map {$_++}, @x; |
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map /x/ @x; --> map {/x/}, @x; |
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grep {$_++} @x; --> grep {$_++}, @x; |
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grep /x/ @x; --> grep {/x/}, @x; |
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=head1 CONFIGURATION |
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This Transformer is not configurable except for the standard options. |
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122
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=head1 AUTHOR |
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Jeffrey Goff <drforr@pobox.com> |
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126
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=head1 COPYRIGHT |
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128
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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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133
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=cut |
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135
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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 : |