package PPIx::EditorTools::RenamePackage;

# ABSTRACT: Change the package name

use strict;

BEGIN {
	$^W = 1;
}
use base 'PPIx::EditorTools';

use Class::XSAccessor accessors => { 'replacement' => 'replacement' };

use PPI;
use Carp;

our $VERSION = '0.18';

=pod

=head1 SYNOPSIS

    my $munged = PPIx::EditorTools::RenamePackage->new->rename(
        code        => "package TestPackage;\nuse strict;\nBEGIN {
	$^W = 1;
}\n1;\n",
        replacement => 'NewPackage'
    );

    my $new_code_as_string = $munged->code;
    my $package_ppi_element = $munged->element;

=head1 DESCRIPTION

This module uses PPI to change the package name of code.

=head1 METHODS

=over 4

=item new()

Constructor. Generally shouldn't be called with any arguments.

=item rename( ppi => PPI::Document $ppi, replacement => Str )
=item rename( code => Str $code, replacement => Str )

Accepts either a C<PPI::Document> to process or a string containing
the code (which will be converted into a C<PPI::Document>) to process.
Replaces the package name with that supplied in the C<replacement>
parameter and returns a C<PPIx::EditorTools::ReturnObject> with the
new code available via the C<ppi> or C<code> accessors, as a
C<PPI::Document> or C<string>, respectively.

Croaks with a "package name not found" exception if unable to find the
package name.

=back

=cut

sub rename {
	my ( $self, %args ) = @_;
	$self->process_doc(%args);
	my $replacement = $args{replacement} || croak "replacement required";

	my $doc = $self->ppi;

	# TODO: support MooseX::Declare
	my $package = $doc->find_first('PPI::Statement::Package')
		or die "no package found";
	my $namespace = $package->schild(1) or croak "package name not found";
	$namespace->isa('PPI::Token::Word') or croak "package name not found";
	$namespace->{content} = $replacement;

	return PPIx::EditorTools::ReturnObject->new(
		ppi     => $doc,
		element => $package
	);
}

1;

__END__


=head1 SEE ALSO

This class inherits from C<PPIx::EditorTools>.
Also see L<App::EditorTools>, L<Padre>, and L<PPI>.

=cut
