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package Perl::Critic::Policy::ValuesAndExpressions::ProhibitImplicitNewlines;
use 5.010001;
use strict;
use warnings;
use Readonly;
use Perl::Critic::Utils qw{ :severities :classification };
use parent 'Perl::Critic::Policy';
our $VERSION = '1.156';
#-----------------------------------------------------------------------------
Readonly::Scalar my $DESC => q{Literal line breaks in a string};
Readonly::Scalar my $EXPL => [60,61];
#-----------------------------------------------------------------------------
sub supported_parameters { return () }
sub default_severity { return $SEVERITY_MEDIUM }
sub default_themes { return qw( core pbp cosmetic ) }
sub applies_to { return 'PPI::Token::Quote' }
#-----------------------------------------------------------------------------
sub violates {
my ( $self, $elem, undef ) = @_;
return if $elem->string !~ m/\n/xms;
return $self->violation( $DESC, $EXPL, $elem );
}
1;
__END__
#-----------------------------------------------------------------------------
=pod
=head1 NAME
Perl::Critic::Policy::ValuesAndExpressions::ProhibitImplicitNewlines - Use concatenation or HEREDOCs instead of literal line breaks in strings.
=head1 AFFILIATION
This Policy is part of the core L<Perl::Critic|Perl::Critic>
distribution.
=head1 DESCRIPTION
Strings with embedded line breaks are hard to read. Use concatenation
or HEREDOCs instead.
my $foo = "Line one is quite long
Line two"; # Bad
my $foo = "Line one is quite long\nLine two"; # Better, but still hard to read
my $foo = "Line one is quite long\n"
. "Line two"; # Better still
my $foo = <<'EOF'; # Use heredoc for longer passages
Line one is quite long
Line two
Line three breaks the camel's back
EOF
=head1 CONFIGURATION
This Policy is not configurable except for the standard options.
=head1 AUTHOR
Chris Dolan <cdolan@cpan.org>
=head1 CREDITS
Initial development of this policy was supported by a grant from the
Perl Foundation.
=head1 COPYRIGHT
Copyright (c) 2007-2011 Chris Dolan. Many rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
=cut
# Local Variables:
# mode: cperl
# cperl-indent-level: 4
# fill-column: 78
# indent-tabs-mode: nil
# c-indentation-style: bsd
# End:
# ex: set ts=8 sts=4 sw=4 tw=78 ft=perl expandtab shiftround :
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