X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=d8d9d82e9bda255999cd278af39097cff1365c65;hp=01a9efc993f7333093abf1b7f987ef5c436fe2c6;hb=3aac966d5b498bf4adcb8681f59343ae8409c9e5;hpb=53875581c2449e237cc1135b8c2cf1674a874aed

diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm
index 01a9efc..d8d9d82 100644
--- a/lib/Mouse/Util.pm
+++ b/lib/Mouse/Util.pm
@@ -1,11 +1,15 @@
 package Mouse::Util;
 use strict;
 use warnings;
-use base qw/Exporter/;
+
+use Exporter;
 
 use Carp qw(confess);
 use B ();
 
+use constant _MOUSE_VERBOSE => !!$ENV{MOUSE_VERBOSE};
+
+our @ISA       = qw(Exporter);
 our @EXPORT_OK = qw(
     find_meta
     does_role
@@ -19,25 +23,40 @@ our @EXPORT_OK = qw(
     get_linear_isa
     get_code_info
 
+    get_code_package
+
     not_supported
 
     does meta dump
+    _MOUSE_VERBOSE
 );
 our %EXPORT_TAGS = (
     all  => \@EXPORT_OK,
-    meta => [qw(does meta dump)],
+    meta => [qw(does meta dump _MOUSE_VERBOSE)],
 );
 
+# aliases as public APIs
+
+# it must be 'require', because Mouse::Meta::Module depends on Mouse::Util
+require Mouse::Meta::Module; # for the entities of metaclass cache utilities
+
+BEGIN {
+    *class_of                    = \&Mouse::Meta::Module::class_of;
+    *get_metaclass_by_name       = \&Mouse::Meta::Module::get_metaclass_by_name;
+    *get_all_metaclass_instances = \&Mouse::Meta::Module::get_all_metaclass_instances;
+    *get_all_metaclass_names     = \&Mouse::Meta::Module::get_all_metaclass_names;
+}
+
 # Moose::Util compatible utilities
 
 sub find_meta{
-    return Mouse::Meta::Module::class_of( $_[0] );
+    return class_of( $_[0] );
 }
 
 sub does_role{
     my ($class_or_obj, $role_name) = @_;
 
-    my $meta = Mouse::Meta::Module::class_of($class_or_obj);
+    my $meta = class_of($class_or_obj);
 
     (defined $role_name)
         || ($meta || 'Mouse::Meta::Class')->throw_error("You must supply a role name to does()");
@@ -45,8 +64,6 @@ sub does_role{
     return defined($meta) && $meta->does_role($role_name);
 }
 
-
-
 BEGIN {
     my $impl;
     if ($] >= 5.009_005) {
@@ -103,6 +120,18 @@ BEGIN {
 
         return ($gv->STASH->NAME, $gv->NAME);
     }
+
+    sub get_code_package{
+        my($coderef) = @_;
+
+        my $cv = B::svref_2object($coderef);
+        $cv->isa('B::CV') or return '';
+
+        my $gv = $cv->GV;
+        $gv->isa('B::GV') or return '';
+
+        return $gv->STASH->NAME;
+    }
 }
 
 # taken from Mouse::Util (0.90)
@@ -132,6 +161,9 @@ BEGIN {
     }
 }
 
+# Utilities from Class::MOP
+
+
 # taken from Class/MOP.pm
 sub is_valid_class_name {
     my $class = shift;
@@ -172,6 +204,7 @@ sub load_first_existing_class {
 }
 
 # taken from Class/MOP.pm
+my %is_class_loaded_cache;
 sub _try_load_one_class {
     my $class = shift;
 
@@ -180,7 +213,7 @@ sub _try_load_one_class {
         confess "Invalid class name ($display)";
     }
 
-    return if is_class_loaded($class);
+    return undef if $is_class_loaded_cache{$class} ||= is_class_loaded($class);
 
     my $file = $class . '.pm';
     $file =~ s{::}{/}g;
@@ -201,14 +234,12 @@ sub load_class {
     return 1;
 }
 
-my %is_class_loaded_cache;
+
 sub is_class_loaded {
     my $class = shift;
 
     return 0 if ref($class) || !defined($class) || !length($class);
 
-    return 1 if $is_class_loaded_cache{$class};
-
     # walk the symbol table tree to avoid autovififying
     # \*{${main::}{"Foo::"}} == \*main::Foo::
 
@@ -220,15 +251,15 @@ sub is_class_loaded {
     }
 
     # check for $VERSION or @ISA
-    return ++$is_class_loaded_cache{$class} if exists $pack->{VERSION}
+    return 1 if exists $pack->{VERSION}
              && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} };
-    return ++$is_class_loaded_cache{$class} if exists $pack->{ISA}
+    return 1 if exists $pack->{ISA}
              && defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0;
 
     # check for any method
     foreach my $name( keys %{$pack} ) {
         my $entry = \$pack->{$name};
-        return ++$is_class_loaded_cache{$class} if ref($entry) ne 'GLOB' || defined *{$entry}{CODE};
+        return 1 if ref($entry) ne 'GLOB' || defined *{$entry}{CODE};
     }
 
     # fail
@@ -247,7 +278,7 @@ sub apply_all_roles {
         if ($i + 1 < $max && ref($_[$i + 1])) {
             push @roles, [ $_[$i++] => $_[$i] ];
         } else {
-            push @roles, [ $_[$i] => {} ];
+            push @roles, [ $_[$i]   => undef ];
         }
         my $role_name = $roles[-1][0];
         load_class($role_name);
@@ -313,7 +344,7 @@ __END__
 
 =head1 NAME
 
-Mouse::Util - features, with or without their dependencies
+Mouse::Util - Features, with or without their dependencies
 
 =head1 IMPLEMENTATIONS FOR
 
@@ -331,9 +362,25 @@ Mouse::Util - features, with or without their dependencies
 
 =head2 Class::MOP
 
-=head3 C<is_class_loaded>
+=head3 C<< is_class_loaded(ClassName) -> Bool >>
+
+Returns whether C<ClassName> is actually loaded or not. It uses a heuristic which
+involves checking for the existence of C<$VERSION>, C<@ISA>, and any
+locally-defined method.
 
-=head3 C<load_class>
+=head3 C<< load_class(ClassName) >>
+
+This will load a given C<ClassName> (or die if it is not loadable).
+This function can be used in place of tricks like
+C<eval "use $module"> or using C<require>.
+
+=head2 C<< Mouse::Util::class_of(ClassName) >>
+
+The counterpart of C<Class::MOP::class_of()>. This is not exportable.
+
+=head2 C<< Mouse::Util::get_metaclass_by_name(ClassName) >>
+
+The counterpart of C<Class::MOP::get_metaclass_by_name()>. This is not exportable.
 
 =head2 MRO::Compat
 
@@ -345,13 +392,17 @@ Mouse::Util - features, with or without their dependencies
 
 =head1 UTILITIES FOR MOUSE
 
-=over 4
+=head3 C<not_supported>
+
+=head1 SEE ALSO
+
+L<Moose::Util>
 
-=item *
+L<Scalar::Util>
 
-C<not_supported>
+L<Sub::Identify>
 
-=back
+L<MRO::Compat>
 
 =cut