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| Current File : //usr/lib/x86_64-linux-gnu/perl-base/vars.pm |
package vars;
use 5.006;
our $VERSION = '1.03';
use warnings::register;
use strict qw(vars subs);
sub import {
my $callpack = caller;
my (undef, @imports) = @_;
my ($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__
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