PPIx::Regexp::Token::Quantifier - Represent an atomic quantifier.

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

Index

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NAME

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PPIx::Regexp::Token::Quantifier - Represent an atomic quantifier.

SYNOPSIS

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

INHERITANCE

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PPIx::Regexp::Token::Quantifier is a PPIx::Regexp::Token.

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

DESCRIPTION

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This class represents an atomic quantifier; that is, one of the characters *, +, or ?.

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_quantifier

 PPIx::Regexp::Token::Quantifier->could_be_quantifier( '*' );

This method returns true if the given string could be a quantifier; 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::Quantifier;

use strict;
use warnings;

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

our $VERSION = '0.020';

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

# Return true if the token is a quantifier.
sub is_quantifier { return 1 };

my %quantifier = map { $_ => 1 } qw{ * + ? };


sub could_be_quantifier {
    my ( $class, $string ) = @_;
    return $quantifier{$string};
}

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

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

    return $quantifier{$character};
}

1;

__END__


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