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| author | Mike Guy <mjtg@cam.ac.uk> | 2001-05-22 14:11:39 +0100 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2001-05-23 21:19:28 +0000 |
| commit | 7eb43e029e176f4ffee0d8c749b60e92343e3503 (patch) | |
| tree | 7594cd4bda58a84d5a17f1e1b1233a9b4215fb69 /lib/vars.pm | |
| parent | cb19cdb0fd3ce67876c25a91eb9a0f13a6646713 (diff) | |
| download | perl-7eb43e029e176f4ffee0d8c749b60e92343e3503.tar.gz | |
vars.pm to support qualified variables (was Re: [ID 20010521.001])
Sender: "M.J.T. Guy" <mjtg@cus.cam.ac.uk>
p4raw-id: //depot/perl@10178
Diffstat (limited to 'lib/vars.pm')
| -rw-r--r-- | lib/vars.pm | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/lib/vars.pm b/lib/vars.pm index d39f19766e..4f3bddf2fa 100644 --- a/lib/vars.pm +++ b/lib/vars.pm @@ -17,31 +17,29 @@ require strict; sub import { my $callpack = caller; my ($pack, @imports, $sym, $ch) = @_; - foreach $sym (@imports) { - ($ch, $sym) = unpack('a1a*', $sym); + foreach (@imports) { + ($ch, $sym) = unpack('a1a*', $_); if ($sym =~ tr/A-Za-z_0-9//c) { # time for a more-detailed check-up - if ($sym =~ /::/) { - require Carp; - Carp::croak("Can't declare another package's variables"); - } elsif ($sym =~ /^\w+[[{].*[]}]$/) { + if ($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 ( $^H &= strict::bits('vars') ) { - Carp::croak("'$ch$sym' is not a valid variable name under strict vars"); + Carp::croak("'$_' is not a valid variable name under strict vars"); } } - *{"${callpack}::$sym"} = - ( $ch eq "\$" ? \$ {"${callpack}::$sym"} - : $ch eq "\@" ? \@ {"${callpack}::$sym"} - : $ch eq "\%" ? \% {"${callpack}::$sym"} - : $ch eq "\*" ? \* {"${callpack}::$sym"} - : $ch eq "\&" ? \& {"${callpack}::$sym"} + $sym = "${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("'$ch$sym' is not a valid variable name"); + Carp::croak("'$_' is not a valid variable name"); }); } }; @@ -59,9 +57,9 @@ vars - Perl pragma to predeclare global variable names (obsolete) =head1 DESCRIPTION -NOTE: The functionality provided by this pragma has been superseded -by C<our> declarations, available in Perl v5.6.0 or later. See -L<perlfunc/our>. +NOTE: For variables in the current package, the functionality provided +by this pragma has been superseded by C<our> declarations, available +in Perl v5.6.0 or later. See L<perlfunc/our>. This will predeclare all the variables whose names are in the list, allowing you to use them under "use strict", and |