home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Chip 2007 January, February, March & April
/
Chip-Cover-CD-2007-02.iso
/
Pakiet bezpieczenstwa
/
mini Pentoo LiveCD 2006.1
/
mpentoo-2006.1.iso
/
livecd.squashfs
/
usr
/
lib
/
perl5
/
5.8.7
/
i686-linux-thread-multi
/
ops.pm
< prev
next >
Wrap
Text File
|
2006-04-25
|
993b
|
48 lines
package ops;
our $VERSION = '1.00';
use Opcode qw(opmask_add opset invert_opset);
sub import {
shift;
# Not that unimport is the prefered form since import's don't
# accumulate well owing to the 'only ever add opmask' rule.
# E.g., perl -Mops=:set1 -Mops=:setb is unlikely to do as expected.
opmask_add(invert_opset opset(@_)) if @_;
}
sub unimport {
shift;
opmask_add(opset(@_)) if @_;
}
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 irreversible 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, optags, opmasks
and important information about safety.
=head1 SEE ALSO
Opcode(3), Safe(3), perlrun(3)
=cut