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Man Pages


Manual Reference Pages  -  REGEXP::LEXER (3)

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NAME

Regexp::Lexer - Lexer for regular expression of perl

CONTENTS

SYNOPSIS



    use Regexp::Lexer qw(tokenize);
    my $tokens = tokenize(qr{\Ahello\s+world\z}i);



DESCRIPTION

Regexp::Lexer is a lexer for regular expression of perl.

This module splits the regular expression string to tokens which has minimum meaning.

FUNCTIONS

o tokenize($re:Regexp)

Tokenizes the regular expression.

This function takes an argument as Regexp, namely it must be regexp quoted variable (i.e. qr/SOMETHING/). If not Regexp argument is given, this function throws exception.

This function returns the result like so;



    {
        tokens => [
            {
                char => \A,
                index => 1,
                type => {
                    id => 67,
                    name => EscapedBeginningOfString,
                },
            },
            {
                char => h,
                index => 2,
                type => {
                    id => 1,
                    name => Character,
                },
            },
            ...
        ],
        modifiers => [^, i],
    }



tokens is the tokens list. Information about type of token is located in the Regexp::Lexer::TokenType.

modifiers is the list of modifiers of regular expression. Please see also perlre.

SEE ALSO

o perlre
o perlrebackslash
o Regexp::Lexer::TokenType

LICENSE

Copyright (C) moznion.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

moznion <moznion@gmail.com>
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perl v5.20.3 REGEXP::LEXER (3) 2015-02-07

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