Initial Commit
This commit is contained in:
Riley Schneider
576
database/perl/lib/feature.pm
Normal file
576
database/perl/lib/feature.pm
Normal file
@@ -0,0 +1,576 @@
|
||||
# -*- buffer-read-only: t -*-
|
||||
# !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
|
||||
# This file is built by regen/feature.pl.
|
||||
# Any changes made here will be lost!
|
||||
|
||||
package feature;
|
||||
|
||||
our $VERSION = '1.58';
|
||||
|
||||
our %feature = (
|
||||
fc => 'feature_fc',
|
||||
isa => 'feature_isa',
|
||||
say => 'feature_say',
|
||||
state => 'feature_state',
|
||||
switch => 'feature_switch',
|
||||
bitwise => 'feature_bitwise',
|
||||
indirect => 'feature_indirect',
|
||||
evalbytes => 'feature_evalbytes',
|
||||
signatures => 'feature_signatures',
|
||||
current_sub => 'feature___SUB__',
|
||||
refaliasing => 'feature_refaliasing',
|
||||
postderef_qq => 'feature_postderef_qq',
|
||||
unicode_eval => 'feature_unieval',
|
||||
declared_refs => 'feature_myref',
|
||||
unicode_strings => 'feature_unicode',
|
||||
);
|
||||
|
||||
our %feature_bundle = (
|
||||
"5.10" => [qw(indirect say state switch)],
|
||||
"5.11" => [qw(indirect say state switch unicode_strings)],
|
||||
"5.15" => [qw(current_sub evalbytes fc indirect say state switch unicode_eval unicode_strings)],
|
||||
"5.23" => [qw(current_sub evalbytes fc indirect postderef_qq say state switch unicode_eval unicode_strings)],
|
||||
"5.27" => [qw(bitwise current_sub evalbytes fc indirect postderef_qq say state switch unicode_eval unicode_strings)],
|
||||
"all" => [qw(bitwise current_sub declared_refs evalbytes fc indirect isa postderef_qq refaliasing say signatures state switch unicode_eval unicode_strings)],
|
||||
"default" => [qw(indirect)],
|
||||
);
|
||||
|
||||
$feature_bundle{"5.12"} = $feature_bundle{"5.11"};
|
||||
$feature_bundle{"5.13"} = $feature_bundle{"5.11"};
|
||||
$feature_bundle{"5.14"} = $feature_bundle{"5.11"};
|
||||
$feature_bundle{"5.16"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.17"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.18"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.19"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.20"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.21"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.22"} = $feature_bundle{"5.15"};
|
||||
$feature_bundle{"5.24"} = $feature_bundle{"5.23"};
|
||||
$feature_bundle{"5.25"} = $feature_bundle{"5.23"};
|
||||
$feature_bundle{"5.26"} = $feature_bundle{"5.23"};
|
||||
$feature_bundle{"5.28"} = $feature_bundle{"5.27"};
|
||||
$feature_bundle{"5.29"} = $feature_bundle{"5.27"};
|
||||
$feature_bundle{"5.30"} = $feature_bundle{"5.27"};
|
||||
$feature_bundle{"5.31"} = $feature_bundle{"5.27"};
|
||||
$feature_bundle{"5.32"} = $feature_bundle{"5.27"};
|
||||
$feature_bundle{"5.9.5"} = $feature_bundle{"5.10"};
|
||||
my %noops = (
|
||||
postderef => 1,
|
||||
lexical_subs => 1,
|
||||
);
|
||||
my %removed = (
|
||||
array_base => 1,
|
||||
);
|
||||
|
||||
our $hint_shift = 26;
|
||||
our $hint_mask = 0x1c000000;
|
||||
our @hint_bundles = qw( default 5.10 5.11 5.15 5.23 5.27 );
|
||||
|
||||
# This gets set (for now) in $^H as well as in %^H,
|
||||
# for runtime speed of the uc/lc/ucfirst/lcfirst functions.
|
||||
# See HINT_UNI_8_BIT in perl.h.
|
||||
our $hint_uni8bit = 0x00000800;
|
||||
|
||||
# TODO:
|
||||
# - think about versioned features (use feature switch => 2)
|
||||
|
||||
=head1 NAME
|
||||
|
||||
feature - Perl pragma to enable new features
|
||||
|
||||
=head1 SYNOPSIS
|
||||
|
||||
use feature qw(say switch);
|
||||
given ($foo) {
|
||||
when (1) { say "\$foo == 1" }
|
||||
when ([2,3]) { say "\$foo == 2 || \$foo == 3" }
|
||||
when (/^a[bc]d$/) { say "\$foo eq 'abd' || \$foo eq 'acd'" }
|
||||
when ($_ > 100) { say "\$foo > 100" }
|
||||
default { say "None of the above" }
|
||||
}
|
||||
|
||||
use feature ':5.10'; # loads all features available in perl 5.10
|
||||
|
||||
use v5.10; # implicitly loads :5.10 feature bundle
|
||||
|
||||
=head1 DESCRIPTION
|
||||
|
||||
It is usually impossible to add new syntax to Perl without breaking
|
||||
some existing programs. This pragma provides a way to minimize that
|
||||
risk. New syntactic constructs, or new semantic meanings to older
|
||||
constructs, can be enabled by C<use feature 'foo'>, and will be parsed
|
||||
only when the appropriate feature pragma is in scope. (Nevertheless, the
|
||||
C<CORE::> prefix provides access to all Perl keywords, regardless of this
|
||||
pragma.)
|
||||
|
||||
=head2 Lexical effect
|
||||
|
||||
Like other pragmas (C<use strict>, for example), features have a lexical
|
||||
effect. C<use feature qw(foo)> will only make the feature "foo" available
|
||||
from that point to the end of the enclosing block.
|
||||
|
||||
{
|
||||
use feature 'say';
|
||||
say "say is available here";
|
||||
}
|
||||
print "But not here.\n";
|
||||
|
||||
=head2 C<no feature>
|
||||
|
||||
Features can also be turned off by using C<no feature "foo">. This too
|
||||
has lexical effect.
|
||||
|
||||
use feature 'say';
|
||||
say "say is available here";
|
||||
{
|
||||
no feature 'say';
|
||||
print "But not here.\n";
|
||||
}
|
||||
say "Yet it is here.";
|
||||
|
||||
C<no feature> with no features specified will reset to the default group. To
|
||||
disable I<all> features (an unusual request!) use C<no feature ':all'>.
|
||||
|
||||
=head1 AVAILABLE FEATURES
|
||||
|
||||
=head2 The 'say' feature
|
||||
|
||||
C<use feature 'say'> tells the compiler to enable the Perl 6 style
|
||||
C<say> function.
|
||||
|
||||
See L<perlfunc/say> for details.
|
||||
|
||||
This feature is available starting with Perl 5.10.
|
||||
|
||||
=head2 The 'state' feature
|
||||
|
||||
C<use feature 'state'> tells the compiler to enable C<state>
|
||||
variables.
|
||||
|
||||
See L<perlsub/"Persistent Private Variables"> for details.
|
||||
|
||||
This feature is available starting with Perl 5.10.
|
||||
|
||||
=head2 The 'switch' feature
|
||||
|
||||
B<WARNING>: Because the L<smartmatch operator|perlop/"Smartmatch Operator"> is
|
||||
experimental, Perl will warn when you use this feature, unless you have
|
||||
explicitly disabled the warning:
|
||||
|
||||
no warnings "experimental::smartmatch";
|
||||
|
||||
C<use feature 'switch'> tells the compiler to enable the Perl 6
|
||||
given/when construct.
|
||||
|
||||
See L<perlsyn/"Switch Statements"> for details.
|
||||
|
||||
This feature is available starting with Perl 5.10.
|
||||
|
||||
=head2 The 'unicode_strings' feature
|
||||
|
||||
C<use feature 'unicode_strings'> tells the compiler to use Unicode rules
|
||||
in all string operations executed within its scope (unless they are also
|
||||
within the scope of either C<use locale> or C<use bytes>). The same applies
|
||||
to all regular expressions compiled within the scope, even if executed outside
|
||||
it. It does not change the internal representation of strings, but only how
|
||||
they are interpreted.
|
||||
|
||||
C<no feature 'unicode_strings'> tells the compiler to use the traditional
|
||||
Perl rules wherein the native character set rules is used unless it is
|
||||
clear to Perl that Unicode is desired. This can lead to some surprises
|
||||
when the behavior suddenly changes. (See
|
||||
L<perlunicode/The "Unicode Bug"> for details.) For this reason, if you are
|
||||
potentially using Unicode in your program, the
|
||||
C<use feature 'unicode_strings'> subpragma is B<strongly> recommended.
|
||||
|
||||
This feature is available starting with Perl 5.12; was almost fully
|
||||
implemented in Perl 5.14; and extended in Perl 5.16 to cover C<quotemeta>;
|
||||
was extended further in Perl 5.26 to cover L<the range
|
||||
operator|perlop/Range Operators>; and was extended again in Perl 5.28 to
|
||||
cover L<special-cased whitespace splitting|perlfunc/split>.
|
||||
|
||||
=head2 The 'unicode_eval' and 'evalbytes' features
|
||||
|
||||
Together, these two features are intended to replace the legacy string
|
||||
C<eval> function, which behaves problematically in some instances. They are
|
||||
available starting with Perl 5.16, and are enabled by default by a
|
||||
S<C<use 5.16>> or higher declaration.
|
||||
|
||||
C<unicode_eval> changes the behavior of plain string C<eval> to work more
|
||||
consistently, especially in the Unicode world. Certain (mis)behaviors
|
||||
couldn't be changed without breaking some things that had come to rely on
|
||||
them, so the feature can be enabled and disabled. Details are at
|
||||
L<perlfunc/Under the "unicode_eval" feature>.
|
||||
|
||||
C<evalbytes> is like string C<eval>, but operating on a byte stream that is
|
||||
not UTF-8 encoded. Details are at L<perlfunc/evalbytes EXPR>. Without a
|
||||
S<C<use feature 'evalbytes'>> nor a S<C<use v5.16>> (or higher) declaration in
|
||||
the current scope, you can still access it by instead writing
|
||||
C<CORE::evalbytes>.
|
||||
|
||||
=head2 The 'current_sub' feature
|
||||
|
||||
This provides the C<__SUB__> token that returns a reference to the current
|
||||
subroutine or C<undef> outside of a subroutine.
|
||||
|
||||
This feature is available starting with Perl 5.16.
|
||||
|
||||
=head2 The 'array_base' feature
|
||||
|
||||
This feature supported the legacy C<$[> variable. See L<perlvar/$[>.
|
||||
It was on by default but disabled under C<use v5.16> (see
|
||||
L</IMPLICIT LOADING>, below) and unavailable since perl 5.30.
|
||||
|
||||
This feature is available under this name starting with Perl 5.16. In
|
||||
previous versions, it was simply on all the time, and this pragma knew
|
||||
nothing about it.
|
||||
|
||||
=head2 The 'fc' feature
|
||||
|
||||
C<use feature 'fc'> tells the compiler to enable the C<fc> function,
|
||||
which implements Unicode casefolding.
|
||||
|
||||
See L<perlfunc/fc> for details.
|
||||
|
||||
This feature is available from Perl 5.16 onwards.
|
||||
|
||||
=head2 The 'lexical_subs' feature
|
||||
|
||||
In Perl versions prior to 5.26, this feature enabled
|
||||
declaration of subroutines via C<my sub foo>, C<state sub foo>
|
||||
and C<our sub foo> syntax. See L<perlsub/Lexical Subroutines> for details.
|
||||
|
||||
This feature is available from Perl 5.18 onwards. From Perl 5.18 to 5.24,
|
||||
it was classed as experimental, and Perl emitted a warning for its
|
||||
usage, except when explicitly disabled:
|
||||
|
||||
no warnings "experimental::lexical_subs";
|
||||
|
||||
As of Perl 5.26, use of this feature no longer triggers a warning, though
|
||||
the C<experimental::lexical_subs> warning category still exists (for
|
||||
compatibility with code that disables it). In addition, this syntax is
|
||||
not only no longer experimental, but it is enabled for all Perl code,
|
||||
regardless of what feature declarations are in scope.
|
||||
|
||||
=head2 The 'postderef' and 'postderef_qq' features
|
||||
|
||||
The 'postderef_qq' feature extends the applicability of L<postfix
|
||||
dereference syntax|perlref/Postfix Dereference Syntax> so that postfix array
|
||||
and scalar dereference are available in double-quotish interpolations. For
|
||||
example, it makes the following two statements equivalent:
|
||||
|
||||
my $s = "[@{ $h->{a} }]";
|
||||
my $s = "[$h->{a}->@*]";
|
||||
|
||||
This feature is available from Perl 5.20 onwards. In Perl 5.20 and 5.22, it
|
||||
was classed as experimental, and Perl emitted a warning for its
|
||||
usage, except when explicitly disabled:
|
||||
|
||||
no warnings "experimental::postderef";
|
||||
|
||||
As of Perl 5.24, use of this feature no longer triggers a warning, though
|
||||
the C<experimental::postderef> warning category still exists (for
|
||||
compatibility with code that disables it).
|
||||
|
||||
The 'postderef' feature was used in Perl 5.20 and Perl 5.22 to enable
|
||||
postfix dereference syntax outside double-quotish interpolations. In those
|
||||
versions, using it triggered the C<experimental::postderef> warning in the
|
||||
same way as the 'postderef_qq' feature did. As of Perl 5.24, this syntax is
|
||||
not only no longer experimental, but it is enabled for all Perl code,
|
||||
regardless of what feature declarations are in scope.
|
||||
|
||||
=head2 The 'signatures' feature
|
||||
|
||||
B<WARNING>: This feature is still experimental and the implementation may
|
||||
change in future versions of Perl. For this reason, Perl will
|
||||
warn when you use the feature, unless you have explicitly disabled the
|
||||
warning:
|
||||
|
||||
no warnings "experimental::signatures";
|
||||
|
||||
This enables unpacking of subroutine arguments into lexical variables
|
||||
by syntax such as
|
||||
|
||||
sub foo ($left, $right) {
|
||||
return $left + $right;
|
||||
}
|
||||
|
||||
See L<perlsub/Signatures> for details.
|
||||
|
||||
This feature is available from Perl 5.20 onwards.
|
||||
|
||||
=head2 The 'refaliasing' feature
|
||||
|
||||
B<WARNING>: This feature is still experimental and the implementation may
|
||||
change in future versions of Perl. For this reason, Perl will
|
||||
warn when you use the feature, unless you have explicitly disabled the
|
||||
warning:
|
||||
|
||||
no warnings "experimental::refaliasing";
|
||||
|
||||
This enables aliasing via assignment to references:
|
||||
|
||||
\$a = \$b; # $a and $b now point to the same scalar
|
||||
\@a = \@b; # to the same array
|
||||
\%a = \%b;
|
||||
\&a = \&b;
|
||||
foreach \%hash (@array_of_hash_refs) {
|
||||
...
|
||||
}
|
||||
|
||||
See L<perlref/Assigning to References> for details.
|
||||
|
||||
This feature is available from Perl 5.22 onwards.
|
||||
|
||||
=head2 The 'bitwise' feature
|
||||
|
||||
This makes the four standard bitwise operators (C<& | ^ ~>) treat their
|
||||
operands consistently as numbers, and introduces four new dotted operators
|
||||
(C<&. |. ^. ~.>) that treat their operands consistently as strings. The
|
||||
same applies to the assignment variants (C<&= |= ^= &.= |.= ^.=>).
|
||||
|
||||
See L<perlop/Bitwise String Operators> for details.
|
||||
|
||||
This feature is available from Perl 5.22 onwards. Starting in Perl 5.28,
|
||||
C<use v5.28> will enable the feature. Before 5.28, it was still
|
||||
experimental and would emit a warning in the "experimental::bitwise"
|
||||
category.
|
||||
|
||||
=head2 The 'declared_refs' feature
|
||||
|
||||
B<WARNING>: This feature is still experimental and the implementation may
|
||||
change in future versions of Perl. For this reason, Perl will
|
||||
warn when you use the feature, unless you have explicitly disabled the
|
||||
warning:
|
||||
|
||||
no warnings "experimental::declared_refs";
|
||||
|
||||
This allows a reference to a variable to be declared with C<my>, C<state>,
|
||||
our C<our>, or localized with C<local>. It is intended mainly for use in
|
||||
conjunction with the "refaliasing" feature. See L<perlref/Declaring a
|
||||
Reference to a Variable> for examples.
|
||||
|
||||
This feature is available from Perl 5.26 onwards.
|
||||
|
||||
=head2 The 'isa' feature
|
||||
|
||||
This allows the use of the C<isa> infix operator, which tests whether the
|
||||
scalar given by the left operand is an object of the class given by the
|
||||
right operand. See L<perlop/Class Instance Operator> for more details.
|
||||
|
||||
This feature is available from Perl 5.32 onwards.
|
||||
|
||||
=head2 The 'indirect' feature
|
||||
|
||||
This feature allows the use of L<indirect object
|
||||
syntax|perlobj/Indirect Object Syntax> for method calls, e.g. C<new
|
||||
Foo 1, 2;>. It is enabled by default, but can be turned off to
|
||||
disallow indirect object syntax.
|
||||
|
||||
This feature is available under this name from Perl 5.32 onwards. In
|
||||
previous versions, it was simply on all the time. To disallow (or
|
||||
warn on) indirect object syntax on older Perls, see the L<indirect>
|
||||
CPAN module.
|
||||
|
||||
=head1 FEATURE BUNDLES
|
||||
|
||||
It's possible to load multiple features together, using
|
||||
a I<feature bundle>. The name of a feature bundle is prefixed with
|
||||
a colon, to distinguish it from an actual feature.
|
||||
|
||||
use feature ":5.10";
|
||||
|
||||
The following feature bundles are available:
|
||||
|
||||
bundle features included
|
||||
--------- -----------------
|
||||
:default indirect
|
||||
|
||||
:5.10 say state switch indirect
|
||||
|
||||
:5.12 say state switch unicode_strings indirect
|
||||
|
||||
:5.14 say state switch unicode_strings indirect
|
||||
|
||||
:5.16 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
indirect
|
||||
|
||||
:5.18 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
indirect
|
||||
|
||||
:5.20 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
indirect
|
||||
|
||||
:5.22 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
indirect
|
||||
|
||||
:5.24 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
postderef_qq indirect
|
||||
|
||||
:5.26 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
postderef_qq indirect
|
||||
|
||||
:5.28 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
postderef_qq bitwise indirect
|
||||
|
||||
:5.30 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
postderef_qq bitwise indirect
|
||||
|
||||
:5.32 say state switch unicode_strings
|
||||
unicode_eval evalbytes current_sub fc
|
||||
postderef_qq bitwise indirect
|
||||
|
||||
The C<:default> bundle represents the feature set that is enabled before
|
||||
any C<use feature> or C<no feature> declaration.
|
||||
|
||||
Specifying sub-versions such as the C<0> in C<5.14.0> in feature bundles has
|
||||
no effect. Feature bundles are guaranteed to be the same for all sub-versions.
|
||||
|
||||
use feature ":5.14.0"; # same as ":5.14"
|
||||
use feature ":5.14.1"; # same as ":5.14"
|
||||
|
||||
=head1 IMPLICIT LOADING
|
||||
|
||||
Instead of loading feature bundles by name, it is easier to let Perl do
|
||||
implicit loading of a feature bundle for you.
|
||||
|
||||
There are two ways to load the C<feature> pragma implicitly:
|
||||
|
||||
=over 4
|
||||
|
||||
=item *
|
||||
|
||||
By using the C<-E> switch on the Perl command-line instead of C<-e>.
|
||||
That will enable the feature bundle for that version of Perl in the
|
||||
main compilation unit (that is, the one-liner that follows C<-E>).
|
||||
|
||||
=item *
|
||||
|
||||
By explicitly requiring a minimum Perl version number for your program, with
|
||||
the C<use VERSION> construct. That is,
|
||||
|
||||
use v5.10.0;
|
||||
|
||||
will do an implicit
|
||||
|
||||
no feature ':all';
|
||||
use feature ':5.10';
|
||||
|
||||
and so on. Note how the trailing sub-version
|
||||
is automatically stripped from the
|
||||
version.
|
||||
|
||||
But to avoid portability warnings (see L<perlfunc/use>), you may prefer:
|
||||
|
||||
use 5.010;
|
||||
|
||||
with the same effect.
|
||||
|
||||
If the required version is older than Perl 5.10, the ":default" feature
|
||||
bundle is automatically loaded instead.
|
||||
|
||||
Unlike C<use feature ":5.12">, saying C<use v5.12> (or any higher version)
|
||||
also does the equivalent of C<use strict>; see L<perlfunc/use> for details.
|
||||
|
||||
=back
|
||||
|
||||
=cut
|
||||
|
||||
sub import {
|
||||
shift;
|
||||
|
||||
if (!@_) {
|
||||
croak("No features specified");
|
||||
}
|
||||
|
||||
__common(1, @_);
|
||||
}
|
||||
|
||||
sub unimport {
|
||||
shift;
|
||||
|
||||
# A bare C<no feature> should reset to the default bundle
|
||||
if (!@_) {
|
||||
$^H &= ~($hint_uni8bit|$hint_mask);
|
||||
return;
|
||||
}
|
||||
|
||||
__common(0, @_);
|
||||
}
|
||||
|
||||
|
||||
sub __common {
|
||||
my $import = shift;
|
||||
my $bundle_number = $^H & $hint_mask;
|
||||
my $features = $bundle_number != $hint_mask
|
||||
&& $feature_bundle{$hint_bundles[$bundle_number >> $hint_shift]};
|
||||
if ($features) {
|
||||
# Features are enabled implicitly via bundle hints.
|
||||
# Delete any keys that may be left over from last time.
|
||||
delete @^H{ values(%feature) };
|
||||
$^H |= $hint_mask;
|
||||
for (@$features) {
|
||||
$^H{$feature{$_}} = 1;
|
||||
$^H |= $hint_uni8bit if $_ eq 'unicode_strings';
|
||||
}
|
||||
}
|
||||
while (@_) {
|
||||
my $name = shift;
|
||||
if (substr($name, 0, 1) eq ":") {
|
||||
my $v = substr($name, 1);
|
||||
if (!exists $feature_bundle{$v}) {
|
||||
$v =~ s/^([0-9]+)\.([0-9]+).[0-9]+$/$1.$2/;
|
||||
if (!exists $feature_bundle{$v}) {
|
||||
unknown_feature_bundle(substr($name, 1));
|
||||
}
|
||||
}
|
||||
unshift @_, @{$feature_bundle{$v}};
|
||||
next;
|
||||
}
|
||||
if (!exists $feature{$name}) {
|
||||
if (exists $noops{$name}) {
|
||||
next;
|
||||
}
|
||||
if (!$import && exists $removed{$name}) {
|
||||
next;
|
||||
}
|
||||
unknown_feature($name);
|
||||
}
|
||||
if ($import) {
|
||||
$^H{$feature{$name}} = 1;
|
||||
$^H |= $hint_uni8bit if $name eq 'unicode_strings';
|
||||
} else {
|
||||
delete $^H{$feature{$name}};
|
||||
$^H &= ~ $hint_uni8bit if $name eq 'unicode_strings';
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
sub unknown_feature {
|
||||
my $feature = shift;
|
||||
croak(sprintf('Feature "%s" is not supported by Perl %vd',
|
||||
$feature, $^V));
|
||||
}
|
||||
|
||||
sub unknown_feature_bundle {
|
||||
my $feature = shift;
|
||||
croak(sprintf('Feature bundle "%s" is not supported by Perl %vd',
|
||||
$feature, $^V));
|
||||
}
|
||||
|
||||
sub croak {
|
||||
require Carp;
|
||||
Carp::croak(@_);
|
||||
}
|
||||
|
||||
1;
|
||||
|
||||
# ex: set ro:
|
||||
Reference in New Issue
Block a user