PPIx::Regexp::Token::Greediness - Represent a greediness qualifier.

PPIx-Regexp documentation Contained in the PPIx-Regexp distribution.

Index

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NAME

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PPIx::Regexp::Token::Greediness - Represent a greediness qualifier.

SYNOPSIS

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 use PPIx::Regexp::Dumper;
 PPIx::Regexp::Dumper->new( 'qr{foo*+}smx' )
     ->print();

INHERITANCE

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PPIx::Regexp::Token::Greediness is a PPIx::Regexp::Token.

PPIx::Regexp::Token::Greediness has no descendants.

DESCRIPTION

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This class represents a greediness qualifier for the preceding quantifier.

METHODS

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This class provides the following public methods. Methods not documented here are private, and unsupported in the sense that the author reserves the right to change or remove them without notice.

could_be_greediness

 PPIx::Regexp::Token::Greediness->could_be_greediness( '?' );

This method returns true if the given string could be a greediness indicator; that is, if it is '+' or '?'.

SUPPORT

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Support is by the author. Please file bug reports at http://rt.cpan.org, or in electronic mail to the author.

AUTHOR

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Thomas R. Wyant, III wyant at cpan dot org

COPYRIGHT AND LICENSE

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Copyright (C) 2009-2011 by Thomas R. Wyant, III

This program is free software; you can redistribute it and/or modify it under the same terms as Perl 5.10.0. For more details, see the full text of the licenses in the directory LICENSES.

This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.

PPIx-Regexp documentation Contained in the PPIx-Regexp distribution. 
package PPIx::Regexp::Token::Greediness;

use strict;
use warnings;

use base qw{ PPIx::Regexp::Token };

use PPIx::Regexp::Constant qw{ MINIMUM_PERL };

our $VERSION = '0.020';

# Return true if the token can be quantified, and false otherwise
sub can_be_quantified { return };

my %greediness = (
    '?' => MINIMUM_PERL,
    '+' => '5.009005',
);


sub could_be_greediness {
    my ( $class, $string ) = @_;
    return $greediness{$string};
}

sub perl_version_introduced {
    my ( $self ) = @_;
    return $greediness{ $self->content() } || MINIMUM_PERL;
}

sub __PPIX_TOKENIZER__regexp {
    my ( $class, $tokenizer, $character, $char_type ) = @_;

    $tokenizer->prior( 'is_quantifier' ) or return;

    $greediness{$character} or return;

    return length $character;
}

1;

__END__


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