PPIx::Regexp::Structure(3)
NAME
PPIx::Regexp::Structure - Represent a structure.
SYNOPSIS
use PPIx::Regexp::Dumper;
PPIx::Regexp::Dumper->new( 'qr{(foo)}' )->print();
INHERITANCE
"PPIx::Regexp::Structure" is a PPIx::Regexp::Node.
"PPIx::Regexp::Structure" is the parent of
PPIx::Regexp::Structure::Assertion,
PPIx::Regexp::Structure::BranchReset, PPIx::Regexp::Structure::Capture,
PPIx::Regexp::Structure::CharClass, PPIx::Regexp::Structure::Code,
PPIx::Regexp::Structure::Main, PPIx::Regexp::Structure::Modifier,
PPIx::Regexp::Structure::Quantifier,
PPIx::Regexp::Structure::Script_Run,
PPIx::Regexp::Structure::Subexpression, PPIx::Regexp::Structure::Switch
and PPIx::Regexp::Structure::Unknown.
DESCRIPTION
This class represents a bracketed construction of some sort. The
brackets are considered part of the structure, but not inside it. So
the "elements()" method returns the brackets if they are defined, but
the "children()" method does not.
METHODS
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.
elements
This override returns all components of the structure, including those
that define it.
finish
my $elem = $struct->finish();
my @elem = $struct->finish();
my $elem = $struct->finish( 0 );
Returns the finishing structure element. This is included in the
"elements" but not in the "children".
The finishing element is actually an array, though it should never have
more than one element. Calling "finish" in list context gets you all
elements of the array. Calling it in scalar context gets you an element
of the array, defaulting to element 0 if no argument is passed.
start
my $elem = $struct->start();
my @elem = $struct->start();
my $elem = $struct->start( 0 );
Returns the starting structure element. This is included in the
"elements" but not in the "children".
The starting element is actually an array. The first element (element
0) is the actual starting delimiter. Subsequent elements, if any, are
insignificant elements (comments or white space) absorbed into the
start element for ease of parsing subsequent elements.
Calling "start" in list context gets you all elements of the array.
Calling it in scalar context gets you an element of the array,
defaulting to element 0 if no argument is passed.
type
my $elem = $struct->type();
my @elem = $struct->type();
my $elem = $struct->type( 0 );
Returns the group type if any. This will be the leading
PPIx::Regexp::Token::GroupType token if any. This is included in
"elements" but not in "children".
The type is actually an array. The first element (element 0) is the
actual type determiner. Subsequent elements, if any, are insignificant
elements (comments or white space) absorbed into the type element for
consistency with the way the start element is handled.
Calling "type" in list context gets you all elements of the array.
Calling it in scalar context gets you an element of the array,
defaulting to element 0 if no argument is passed.
SUPPORT
Support is by the author. Please file bug reports at
<http://rt.cpan.org>, or in electronic mail to the author.
AUTHOR
Thomas R. Wyant, III wyant at cpan dot org
COPYRIGHT AND LICENSE
Copyright (C) 2009-2019 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.
perl v5.28.1 2019-04-04 PPIx::Regexp::Structure(3)
ppix-regexp 0.64.0 - Generated Thu Apr 4 16:17:45 CDT 2019