package Devel::LexAlias;

require DynaLoader;

use Devel::Caller qw(caller_cv);

require 5.005003;

@ISA = qw(Exporter DynaLoader);

@EXPORT_OK = qw(lexalias);

$VERSION = '0.05';

bootstrap Devel::LexAlias $VERSION;

sub lexalias {

    my $cv = shift;

    unless (ref $cv eq 'CODE') {

        $cv = caller_cv($cv + 1);

    }

    return _lexalias($cv, @_);

}

1;

__END__

=head1 NAME

Devel::LexAlias - alias lexical variables

=head1 SYNOPSIS

 use Devel::LexAlias qw(lexalias);

 sub steal_my_x {

     my $foo = 1;

     lexalias(1, '$x', \$foo);

 }

 sub foo {

     my $x = 22;

     print $x; # prints 22

     steal_my_x;

     print $x; # prints 1

 }

=head1 DESCRIPTION

Devel::LexAlias provides the ability to alias a lexical variable in a

subroutines scope to one of your choosing.

If you don't know why you'd want to do this, I'd suggest that you skip

this module.  If you think you have a use for it, I'd insist on it.

Still here?

=over

=item lexalias( $where, $name, $variable )

C<$where> refers to the subroutine in which to alias the lexical, it

can be a coderef or a call level such that you'd give to C<caller>

C<$name> is the name of the lexical within that subroutine

C<$variable> is a reference to the variable to install at that location

=back

=head1 BUGS

lexalias delves into the internals of the interpreter to perform its

actions and is so very sensitive to bad data, which will likely result

in flaming death, or a core dump.  Consider this a warning.

There is no checking that you are attaching a suitable variable back

into the pad as implied by the name of the variable, so it is possible

to do the following:

 lexalias( $sub, '$foo', [qw(an array)] );

The behaviour of this is untested, I imagine badness is very close on

the horizon though.

=head1 SEE ALSO

peek_sub from L<PadWalker>, L<Devel::Peek>

=head1 AUTHOR

Richard Clamp E<lt>richardc@unixbeard.netE<gt> with close reference to

PadWalker by Robin Houston

=head1 COPYRIGHT

Copyright (c) 2002, 2013, Richard Clamp. All Rights Reserved.  This module

is free software. It may be used, redistributed and/or modified under

the same terms as Perl itself.

=cut