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package Devel::REPL::Plugin::Packages;
use Moose::Role;
use vars qw($PKG_SAVE);
has 'current_package' => (
isa => 'Str',
is => 'rw',
default => 'Devel::REPL::Plugin::Packages::DefaultScratchpad',
lazy => 1
);
around 'wrap_as_sub' => sub {
my $orig = shift;
my ($self, @args) = @_;
my $line = $self->$orig(@args);
# prepend package def before sub { ... }
return q!package !.$self->current_package.qq!;\n${line}!;
};
around 'mangle_line' => sub {
my $orig = shift;
my ($self, @args) = @_;
my $line = $self->$orig(@args);
# add a BEGIN block to set the package around at the end of the sub
# without mangling the return value (we save it off into a global)
$line .= '; BEGIN { $Devel::REPL::Plugin::Packages::PKG_SAVE = __PACKAGE__; }';
return $line;
};
after 'execute' => sub {
my ($self) = @_;
# if we survived execution successfully, save the new package out the global
$self->current_package($PKG_SAVE);
};
around 'eval' => sub {
my $orig = shift;
my ($self, @args) = @_;
# localise the $PKG_SAVE global in case of nested evals
local $PKG_SAVE;
return $self->$orig(@args);
};
package Devel::REPL::Plugin::Packages::DefaultScratchpad;
# declare empty scratchpad package for cleanliness
1;
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