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|
use strict;
use warnings;
package Devel::REPL::Plugin::LexEnv;
# ABSTRACT: Provide a lexical environment for the REPL
our $VERSION = '1.003028';
use Devel::REPL::Plugin;
use namespace::autoclean;
use Lexical::Persistence;
sub BEFORE_PLUGIN {
my $self = shift;
$self->load_plugin('FindVariable');
}
has 'lexical_environment' => (
isa => 'Lexical::Persistence',
is => 'rw',
lazy => 1,
default => sub { Lexical::Persistence->new }
);
has '_hints' => (
isa => "ArrayRef",
is => "rw",
predicate => '_has_hints',
);
around 'mangle_line' => sub {
my $orig = shift;
my ($self, @rest) = @_;
my $line = $self->$orig(@rest);
my $lp = $self->lexical_environment;
# Collate my declarations for all LP context vars then add '';
# so an empty statement doesn't return anything (with a no warnings
# to prevent "Useless use ..." warning)
return join('',
'BEGIN { if ( $_REPL->_has_hints ) { ( $^H, %^H ) = @{ $_REPL->_hints } } }',
( map { "my $_;\n" } keys %{$lp->get_context('_')} ),
qq{{ no warnings 'void'; ''; }\n},
$line,
'; BEGIN { $_REPL->_hints([ $^H, %^H ]) }',
);
};
around 'execute' => sub {
my $orig = shift;
my ($self, $to_exec, @rest) = @_;
my $wrapped = $self->lexical_environment->wrap($to_exec);
return $self->$orig($wrapped, @rest);
};
# this doesn't work! yarg. we now just check $self->can('lexical_environment')
# in FindVariable
#around 'find_variable' => sub {
# my $orig = shift;
# my ($self, $name) = @_;
#
# return \( $self->lexical_environment->get_context('_')->{$name} )
# if exists $self->lexical_environment->get_context('_')->{$name};
#
# return $orig->(@_);
#};
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Devel::REPL::Plugin::LexEnv - Provide a lexical environment for the REPL
=head1 VERSION
version 1.003028
=head1 SYNOPSIS
# in your re.pl file:
use Devel::REPL;
my $repl = Devel::REPL->new;
$repl->load_plugin('LexEnv');
$repl->lexical_environment->do(<<'CODEZ');
use FindBin;
use lib "$FindBin::Bin/../lib";
use MyApp::Schema;
my $s = MyApp::Schema->connect('dbi:Pg:dbname=foo','broseph','elided');
CODEZ
$repl->run;
# after you run re.pl:
$ warn $s->resultset('User')->first->first_name # <-- note that $s works
=head1 SUPPORT
Bugs may be submitted through L<the RT bug tracker|https://rt.cpan.org/Public/Dist/Display.html?Name=Devel-REPL>
(or L<bug-Devel-REPL@rt.cpan.org|mailto:bug-Devel-REPL@rt.cpan.org>).
There is also an irc channel available for users of this distribution, at
L<C<#devel> on C<irc.perl.org>|irc://irc.perl.org/#devel-repl>.
=head1 AUTHOR
Matt S Trout - mst (at) shadowcatsystems.co.uk (L<http://www.shadowcatsystems.co.uk/>)
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2007 by Matt S Trout - mst (at) shadowcatsystems.co.uk (L<http://www.shadowcatsystems.co.uk/>).
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
