home *** CD-ROM | disk | FTP | other *** search
- package vars;
-
- =head1 NAME
-
- vars - Perl pragma to predeclare global variable names
-
- =head1 SYNOPSIS
-
- use vars qw($frob @mung %seen);
-
- =head1 DESCRIPTION
-
- This will predeclare all the variables whose names are
- in the list, allowing you to use them under "use strict", and
- disabling any typo warnings.
-
- See L<perlmod/Pragmatic Modules>.
-
- =cut
- require 5.000;
- use Carp;
-
- sub import {
- my $callpack = caller;
- my ($pack, @imports, $sym, $ch) = @_;
- foreach $sym (@imports) {
- croak "Can't declare another package's variables" if $sym =~ /::/;
- ($ch, $sym) = unpack('a1a*', $sym);
- *{"${callpack}::$sym"} =
- ( $ch eq "\$" ? \$ {"${callpack}::$sym"}
- : $ch eq "\@" ? \@ {"${callpack}::$sym"}
- : $ch eq "\%" ? \% {"${callpack}::$sym"}
- : $ch eq "\*" ? \* {"${callpack}::$sym"}
- : $ch eq "\&" ? \& {"${callpack}::$sym"}
- : croak "'$ch$sym' is not a valid variable name\n");
- }
- };
-
- 1;
-