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# You may distribute under the terms of either the GNU General Public License
# or the Artistic License (the same terms as Perl itself)
#
# (C) Paul Evans, 2007 -- leonerd@leonerd.org.uk
package # hide from CPAN
IO::Async::DetachedCode::FlatMarshaller;
use strict;
use warnings;
use Carp;
use constant LENGTH_OF_I => length( pack( "I", 0 ) );
sub new
{
my $class = shift;
return bless {}, $class;
}
sub marshall_args
{
my ( $self ) = shift;
my ( $id, $args ) = @_;
my $buffer = "";
foreach( @$args ) {
croak "Cannot marshall a ".ref($_)." using the 'flat' marshaller" if ref $_;
$buffer .= defined $_ ?
pack( "i", length( $_ ) ) . $_ :
pack( "i", -1 );
}
return $buffer;
}
sub unmarshall_args
{
my ( $self ) = shift;
my ( $id, $record ) = @_;
my @args;
while( length $record ) {
my $arglen = unpack( "i", $record );
substr( $record, 0, LENGTH_OF_I, "" );
if( $arglen == -1 ) {
push @args, undef;
}
else {
push @args, substr( $record, 0, $arglen, "" );
}
}
return ( \@args );
}
sub marshall_ret
{
my $self = shift;
my ( $id, $ret ) = @_;
return $self->marshall_args( $id, $ret );
}
sub unmarshall_ret
{
my $self = shift;
my ( $id, $record ) = @_;
return $self->unmarshall_args( $id, $record );
}
# Keep perl happy; keep Britain tidy
1;
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