1 files changed, 195 insertions, 0 deletions
diff --git a/chromium/third_party/cygwin/lib/perl5/5.10/UNIVERSAL.pm b/chromium/third_party/cygwin/lib/perl5/5.10/UNIVERSAL.pm
new file mode 100644
index 00000000000..6c756652fa2
--- /dev/null
+++ b/chromium/third_party/cygwin/lib/perl5/5.10/UNIVERSAL.pm
@@ -0,0 +1,195 @@
+package UNIVERSAL;
+
+our $VERSION = '1.04';
+
+# UNIVERSAL should not contain any extra subs/methods beyond those
+# that it exists to define. The use of Exporter below is a historical
+# accident that can't be fixed without breaking code.  Note that we
+# *don't* set @ISA here, as we don't want all classes/objects inheriting from
+# Exporter.  It's bad enough that all classes have a import() method
+# whenever UNIVERSAL.pm is loaded.
+require Exporter;
+@EXPORT_OK = qw(isa can VERSION);
+
+# Make sure that even though the import method is called, it doesn't do
+# anything unless called on UNIVERSAL.
+sub import {
+    return unless $_[0] eq __PACKAGE__;
+    goto &Exporter::import;
+}
+
+1;
+__END__
+
+=head1 NAME
+
+UNIVERSAL - base class for ALL classes (blessed references)
+
+=head1 SYNOPSIS
+
+    $is_io    = $fd->isa("IO::Handle");
+    $is_io    = Class->isa("IO::Handle");
+
+    $does_log = $obj->DOES("Logger");
+    $does_log = Class->DOES("Logger");
+
+    $sub      = $obj->can("print");
+    $sub      = Class->can("print");
+
+    $sub      = eval { $ref->can("fandango") };
+    $ver      = $obj->VERSION;
+
+    # but never do this!
+    $is_io    = UNIVERSAL::isa($fd, "IO::Handle");
+    $sub      = UNIVERSAL::can($obj, "print");
+
+=head1 DESCRIPTION
+
+C<UNIVERSAL> is the base class from which all blessed references inherit.
+See L<perlobj>.
+
+C<UNIVERSAL> provides the following methods:
+
+=over 4
+
+=item C<< $obj->isa( TYPE ) >>
+
+=item C<< CLASS->isa( TYPE ) >>
+
+=item C<< eval { VAL->isa( TYPE ) } >>
+
+Where
+
+=over 4
+
+=item C<TYPE>
+
+is a package name
+
+=item C<$obj>
+
+is a blessed reference or a string containing a package name
+
+=item C<CLASS>
+
+is a package name
+
+=item C<VAL>
+
+is any of the above or an unblessed reference
+
+=back
+
+When used as an instance or class method (C<< $obj->isa( TYPE ) >>),
+C<isa> returns I<true> if $obj is blessed into package C<TYPE> or
+inherits from package C<TYPE>.
+
+When used as a class method (C<< CLASS->isa( TYPE ) >>, sometimes
+referred to as a static method), C<isa> returns I<true> if C<CLASS>
+inherits from (or is itself) the name of the package C<TYPE> or
+inherits from package C<TYPE>.
+
+If you're not sure what you have (the C<VAL> case), wrap the method call in an
+C<eval> block to catch the exception if C<VAL> is undefined.
+
+If you want to be sure that you're calling C<isa> as a method, not a class,
+check the invocant with C<blessed> from L<Scalar::Util> first:
+
+  use Scalar::Util 'blessed';
+
+  if ( blessed( $obj ) && $obj->isa("Some::Class") {
+      ...
+  }
+
+=item C<< $obj->DOES( ROLE ) >>
+
+=item C<< CLASS->DOES( ROLE ) >>
+
+C<DOES> checks if the object or class performs the role C<ROLE>.  A role is a
+named group of specific behavior (often methods of particular names and
+signatures), similar to a class, but not necessarily a complete class by
+itself.  For example, logging or serialization may be roles.
+
+C<DOES> and C<isa> are similar, in that if either is true, you know that the
+object or class on which you call the method can perform specific behavior.
+However, C<DOES> is different from C<isa> in that it does not care I<how> the
+invocant performs the operations, merely that it does.  (C<isa> of course
+mandates an inheritance relationship.  Other relationships include aggregation,
+delegation, and mocking.)
+
+By default, classes in Perl only perform the C<UNIVERSAL> role, as well as the
+role of all classes in their inheritance.  In other words, by default C<DOES>
+responds identically to C<isa>.
+
+There is a relationship between roles and classes, as each class implies the
+existence of a role of the same name.  There is also a relationship between
+inheritance and roles, in that a subclass that inherits from an ancestor class
+implicitly performs any roles its parent performs.  Thus you can use C<DOES> in
+place of C<isa> safely, as it will return true in all places where C<isa> will
+return true (provided that any overridden C<DOES> I<and> C<isa> methods behave
+appropriately).
+
+=item C<< $obj->can( METHOD ) >>
+
+=item C<< CLASS->can( METHOD ) >>
+
+=item C<< eval { VAL->can( METHOD ) } >>
+
+C<can> checks if the object or class has a method called C<METHOD>. If it does,
+then it returns a reference to the sub.  If it does not, then it returns
+I<undef>.  This includes methods inherited or imported by C<$obj>, C<CLASS>, or
+C<VAL>.
+
+C<can> cannot know whether an object will be able to provide a method through
+AUTOLOAD (unless the object's class has overriden C<can> appropriately), so a
+return value of I<undef> does not necessarily mean the object will not be able
+to handle the method call. To get around this some module authors use a forward
+declaration (see L<perlsub>) for methods they will handle via AUTOLOAD. For
+such 'dummy' subs, C<can> will still return a code reference, which, when
+called, will fall through to the AUTOLOAD. If no suitable AUTOLOAD is provided,
+calling the coderef will cause an error.
+
+You may call C<can> as a class (static) method or an object method.
+
+Again, the same rule about having a valid invocant applies -- use an C<eval>
+block or C<blessed> if you need to be extra paranoid.
+
+=item C<VERSION ( [ REQUIRE ] )>
+
+C<VERSION> will return the value of the variable C<$VERSION> in the
+package the object is blessed into. If C<REQUIRE> is given then
+it will do a comparison and die if the package version is not
+greater than or equal to C<REQUIRE>.
+
+C<VERSION> can be called as either a class (static) method or an object
+method.
+
+=back
+
+=head1 EXPORTS
+
+None by default.
+
+You may request the import of three functions (C<isa>, C<can>, and C<VERSION>),
+however it is usually harmful to do so.  Please don't do this in new code.
+
+For example, previous versions of this documentation suggested using C<isa> as
+a function to determine the type of a reference:
+
+  use UNIVERSAL 'isa';
+
+  $yes = isa $h, "HASH";
+  $yes = isa "Foo", "Bar";
+
+The problem is that this code will I<never> call an overridden C<isa> method in
+any class.  Instead, use C<reftype> from L<Scalar::Util> for the first case:
+
+  use Scalar::Util 'reftype';
+
+  $yes = reftype( $h ) eq "HASH";
+
+and the method form of C<isa> for the second:
+
+  $yes = Foo->isa("Bar");
+
+=cut