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|
package PPI::Statement::Variable;
=pod
=head1 NAME
PPI::Statement::Variable - Variable declaration statements
=head1 DESCRIPTION
The main intent of the PPI::Statement::Variable class is to describe
simple statements that explicitly declare new local or global variables.
=head1 METHODS
=cut
use strict;
use UNIVERSAL 'isa';
use base 'PPI::Statement';
use vars qw{$VERSION};
BEGIN {
$VERSION = '0.903';
}
=pod
=head2 type
The C<type> method checks and returns the declaration type of the statement,
which will be one of either 'my', 'local' or 'our'.
Returns a string or the type, or C<undef> if the type cannot be detected
=cut
sub type {
my $self = shift;
# Get the children we care about
my @schild = grep { $_->significant } $self->children;
shift @schild if isa($schild[0], 'PPI::Token::Label');
# Get the type
(isa($schild[0], 'PPI::Token::Word') and $schild[0]->content =~ /^(my|local|our)$/)
? $schild[0]->content
: undef;
}
=pod
=head2 variables
As for several other PDOM Element types that can declare variables, the
C<variables> method returns a list of the canonical forms of the variables
defined by the statement.
Returns a list of the canonical string forms of variables, or the null list
if it is unable to find any variables.
=cut
sub variables {
my $self = shift;
# Get the children we care about
my @schild = grep { $_->significant } $self->children;
shift @schild if isa($schild[0], 'PPI::Token::Label');
# If the second child is a symbol, return its name
if ( isa($schild[1], 'PPI::Token::Symbol') ) {
return $schild[1]->canonical;
}
# If it's a list, return as a list
if ( isa($schild[1], 'PPI::Statement::List') ) {
my $symbols = $schild[1]->find('PPI::Token::Symbol') or return ();
return map { $_->canonical } @$symbols;
}
# erm... this is unexpected
();
}
1;
=pod
=head1 TO DO
- Write unit tests for this
=head1 SUPPORT
See the L<support section|PPI/SUPPORT> in the main module
=head1 AUTHOR
Adam Kennedy (Maintainer), L<http://ali.as/>, cpan@ali.as
=head1 COPYRIGHT
Copyright (c) 2004 - 2005 Adam Kennedy. All rights reserved.
This program is free software; you can redistribute
it and/or modify it under the same terms as Perl itself.
The full text of the license can be found in the
LICENSE file included with this module.
=cut
|
