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package PPIx::Utils::Language;
use strict;
use warnings;
use Exporter 'import';
our $VERSION = '0.003';
our @EXPORT_OK = qw(precedence_of symbol_without_sigil);
our %EXPORT_TAGS = (all => [@EXPORT_OK]);
# From Perl::Critic::Utils
my %PRECEDENCE_OF = (
'->' => 1,
'++' => 2,
'--' => 2,
'**' => 3,
'!' => 4,
'~' => 4,
'\\' => 4,
'=~' => 5,
'!~' => 5,
'*' => 6,
'/' => 6,
'%' => 6,
'x' => 6,
'+' => 7,
'-' => 7,
'.' => 7,
'<<' => 8,
'>>' => 8,
'-R' => 9,
'-W' => 9,
'-X' => 9,
'-r' => 9,
'-w' => 9,
'-x' => 9,
'-e' => 9,
'-O' => 9,
'-o' => 9,
'-z' => 9,
'-s' => 9,
'-M' => 9,
'-A' => 9,
'-C' => 9,
'-S' => 9,
'-c' => 9,
'-b' => 9,
'-f' => 9,
'-d' => 9,
'-p' => 9,
'-l' => 9,
'-u' => 9,
'-g' => 9,
'-k' => 9,
'-t' => 9,
'-T' => 9,
'-B' => 9,
'<' => 10,
'>' => 10,
'<=' => 10,
'>=' => 10,
'lt' => 10,
'gt' => 10,
'le' => 10,
'ge' => 10,
'==' => 11,
'!=' => 11,
'<=>' => 11,
'eq' => 11,
'ne' => 11,
'cmp' => 11,
'~~' => 11,
'&' => 12,
'|' => 13,
'^' => 13,
'&&' => 14,
'//' => 15,
'||' => 15,
'..' => 16,
'...' => 17,
'?' => 18,
':' => 18,
'=' => 19,
'+=' => 19,
'-=' => 19,
'*=' => 19,
'/=' => 19,
'%=' => 19,
'||=' => 19,
'&&=' => 19,
'|=' => 19,
'&=' => 19,
'**=' => 19,
'x=' => 19,
'.=' => 19,
'^=' => 19,
'<<=' => 19,
'>>=' => 19,
'//=' => 19,
',' => 20,
'=>' => 20,
'not' => 22,
'and' => 23,
'or' => 24,
'xor' => 24,
);
sub precedence_of {
my $elem = shift;
return undef if !$elem;
return $PRECEDENCE_OF{ ref $elem ? "$elem" : $elem };
}
# End from Perl::Critic::Utils
# From Perl::Critic::Utils::Perl
sub symbol_without_sigil {
my ($symbol) = @_;
(my $without_sigil = $symbol) =~ s< \A [\$@%*&] ><>x;
return $without_sigil;
}
# End from Perl::Critic::Utils::Perl
1;
=head1 NAME
PPIx::Utils::Language - Utility functions for PPI related to the Perl language
=head1 SYNOPSIS
use PPIx::Utils::Language ':all';
=head1 DESCRIPTION
This package is a component of L<PPIx::Utils> that contains functions
related to aspects of the Perl language.
=head1 FUNCTIONS
All functions can be imported by name, or with the tag C<:all>.
=head2 precedence_of
my $precedence = precedence_of($element);
Given a L<PPI::Token::Operator> or a string, returns the precedence of
the operator, where 1 is the highest precedence. Returns undef if the
precedence can't be determined (which is usually because it is not an
operator).
=head2 symbol_without_sigil
my $name = symbol_without_sigil($symbol);
Returns the name of the specified symbol with any sigil at the front.
The parameter can be a vanilla Perl string or a L<PPI::Element>.
=head1 BUGS
Report any issues on the public bugtracker.
=head1 AUTHOR
Dan Book <dbook@cpan.org>
Code originally from L<Perl::Critic::Utils> by Jeffrey Ryan Thalhammer
<jeff@imaginative-software.com> and L<Perl::Critic::Utils::Perl> by
Elliot Shank <perl@galumph.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2005-2011 Imaginative Software Systems,
2007-2011 Elliot Shank, 2017 Dan Book.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=head1 SEE ALSO
L<Perl::Critic::Utils>, L<Perl::Critic::Utils::Perl>
|
