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package main;
use strict;
use warnings;
# ABSTRACT: persists lexical variables between lines
use mop;
use PadWalker 'peek_sub', 'closed_over';
=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
class Reply::Plugin::LexicalPersistence extends Reply::Plugin {
has $env = {};
method compile ($next, $line, %args) {
my ($code) = $next->($line, %args);
my $new_env = peek_sub($code);
delete $new_env->{$_} for keys %{ closed_over($code) };
$env = { %$env, %$new_env };
return $code;
}
method lexical_environment { $env }
}
1;
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