mirror of
https://git.savannah.gnu.org/git/parallel.git
synced 2024-12-28 07:37:55 +00:00
49 lines
1.1 KiB
Perl
49 lines
1.1 KiB
Perl
package vars;
|
|
|
|
use 5.006;
|
|
|
|
our $VERSION = '1.01';
|
|
|
|
use warnings::register;
|
|
use strict qw(vars subs);
|
|
|
|
sub import {
|
|
my $callpack = caller;
|
|
my ($pack, @imports) = @_;
|
|
my ($sym, $ch);
|
|
foreach (@imports) {
|
|
if (($ch, $sym) = /^([\$\@\%\*\&])(.+)/) {
|
|
if ($sym =~ /\W/) {
|
|
# time for a more-detailed check-up
|
|
if ($sym =~ /^\w+[[{].*[]}]$/) {
|
|
require Carp;
|
|
Carp::croak("Can't declare individual elements of hash or array");
|
|
} elsif (warnings::enabled() and length($sym) == 1 and $sym !~ tr/a-zA-Z//) {
|
|
warnings::warn("No need to declare built-in vars");
|
|
} elsif (($^H &= strict::bits('vars'))) {
|
|
require Carp;
|
|
Carp::croak("'$_' is not a valid variable name under strict vars");
|
|
}
|
|
}
|
|
$sym = "${callpack}::$sym" unless $sym =~ /::/;
|
|
*$sym =
|
|
( $ch eq "\$" ? \$$sym
|
|
: $ch eq "\@" ? \@$sym
|
|
: $ch eq "\%" ? \%$sym
|
|
: $ch eq "\*" ? \*$sym
|
|
: $ch eq "\&" ? \&$sym
|
|
: do {
|
|
require Carp;
|
|
Carp::croak("'$_' is not a valid variable name");
|
|
});
|
|
} else {
|
|
require Carp;
|
|
Carp::croak("'$_' is not a valid variable name");
|
|
}
|
|
}
|
|
};
|
|
|
|
1;
|
|
__END__
|
|
|