package ops;

use Opcode qw(opmask_add ops_to_opset invert_opset);

sub import {
    shift;
    opmask_add(invert_opset ops_to_opset(@_));
}

sub unimport {
    shift;
    opmask_add(ops_to_opset(@_));
}

1;

__END__

=head1 NAME

ops - Perl pragma to restrict unsafe operations when compiling
 
=head1 SYNOPSIS  
 
  perl -Mops=:default ...    # only allow reasonably safe operations

  perl -M-ops=system ...     # disable the 'system' opcode
 
=head1 DESCRIPTION

Since the ops pragma currently has an irreversable global effect, it is
only of significant practical use with the C<-M> option on the command line.

See the L<Opcode> module for information about opcodes.

=head1 SEE ALSO

Opcode(3), Safe(3), perlrun(3)
 
=cut

