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package Reply::Plugin::LexicalPersistence;
use strict;
use warnings;
# ABSTRACT: persists lexical variables between lines
use base 'Reply::Plugin';
use PadWalker 'peek_sub';
=head1 SYNOPSIS
; .replyrc
[LexicalPersistence]
=head1 DESCRIPTION
This plugin persists the values of lexical variables between input lines. For
instance, with this plugin you can enter C<my $x = 2> into the Reply shell, and
then use C<$x> as expected in subsequent lines.
=cut
sub new {
my $class = shift;
my $self = $class->SUPER::new(@_);
$self->{env} = {};
return $self;
}
sub compile {
my $self = shift;
my ($next, $line, %args) = @_;
$args{environment} ||= {};
$args{environment} = {
%{ $args{environment} },
%{ $self->{env} },
};
my ($code) = $next->($line, %args);
$self->{env} = {
%{ $self->{env} },
%{ peek_sub($code) },
};
return $code;
}
1;
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