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Diffstat (limited to 'Master/tlpkg/tlperl.old/lib/vars.pm')
-rw-r--r-- | Master/tlpkg/tlperl.old/lib/vars.pm | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/Master/tlpkg/tlperl.old/lib/vars.pm b/Master/tlpkg/tlperl.old/lib/vars.pm deleted file mode 100644 index a0151b84030..00000000000 --- a/Master/tlpkg/tlperl.old/lib/vars.pm +++ /dev/null @@ -1,82 +0,0 @@ -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__ - -=head1 NAME - -vars - Perl pragma to predeclare global variable names (obsolete) - -=head1 SYNOPSIS - - use vars qw($frob @mung %seen); - -=head1 DESCRIPTION - -NOTE: For variables in the current package, the functionality provided -by this pragma has been superseded by C<our> declarations, available -in Perl v5.6.0 or later. See L<perlfunc/our>. - -This will predeclare all the variables whose names are -in the list, allowing you to use them under "use strict", and -disabling any typo warnings. - -Unlike pragmas that affect the C<$^H> hints variable, the C<use vars> and -C<use subs> declarations are not BLOCK-scoped. They are thus effective -for the entire file in which they appear. You may not rescind such -declarations with C<no vars> or C<no subs>. - -Packages such as the B<AutoLoader> and B<SelfLoader> that delay -loading of subroutines within packages can create problems with -package lexicals defined using C<my()>. While the B<vars> pragma -cannot duplicate the effect of package lexicals (total transparency -outside of the package), it can act as an acceptable substitute by -pre-declaring global symbols, ensuring their availability to the -later-loaded routines. - -See L<perlmodlib/Pragmatic Modules>. - -=cut |