X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=35c117d1acbf2c6163acfe6ae41cd8e7433ceff9;hp=bcb865eae420e12d0c4ef64330062fa45c7c9f1a;hb=ea249879d28f5ce42afb95feeb7dcb6d37fcd241;hpb=ff6870694bb440c13826e0f0fa25e760247fd24e

diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm
index bcb865e..35c117d 100644
--- a/lib/Mouse/Util.pm
+++ b/lib/Mouse/Util.pm
@@ -2,21 +2,47 @@ package Mouse::Util;
 use strict;
 use warnings;
 use base qw/Exporter/;
+
 use Carp qw(confess);
 use B ();
 
 our @EXPORT_OK = qw(
+    find_meta
+    does_role
+    resolve_metaclass_alias
+    apply_all_roles
+    english_list
+
     load_class
     is_class_loaded
+
     get_linear_isa
-    apply_all_roles
     get_code_info
+
     not_supported
 );
 our %EXPORT_TAGS = (
     all  => \@EXPORT_OK,
 );
 
+# Moose::Util compatible utilities
+
+sub find_meta{
+    return Mouse::Meta::Module::class_of( $_[0] );
+}
+
+sub does_role{
+    my ($class_or_obj, $role) = @_;
+
+    my $meta = Mouse::Meta::Module::class_of($class_or_obj);
+
+    return 0 unless defined $meta;
+    return 1 if $meta->does_role($role);
+    return 0;
+}
+
+
+
 BEGIN {
     my $impl;
     if ($] >= 5.009_005) {
@@ -61,45 +87,44 @@ BEGIN {
 }
 
 { # taken from Sub::Identify
-    sub get_code_info($) {
-        my ($coderef) = @_;
-        ref($coderef) or return;
+    sub get_code_info($) {
+        my ($coderef) = @_;
+        ref($coderef) or return;
 
-        my $cv = B::svref_2object($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, $gv->NAME);
-    }
+        my $gv = $cv->GV;
+        $gv->isa('B::GV') or return;
+
+        return ($gv->STASH->NAME, $gv->NAME);
+    }
 }
 
-# taken from Class/MOP.pm
+# taken from Mouse::Util (0.90)
 {
     my %cache;
 
     sub resolve_metaclass_alias {
         my ( $type, $metaclass_name, %options ) = @_;
 
-        my $cache_key = $type;
-        return $cache{$cache_key}{$metaclass_name}
-          if $cache{$cache_key}{$metaclass_name};
+        my $cache_key = $type . q{ } . ( $options{trait} ? '-Trait' : '' );
+
+        return $cache{$cache_key}{$metaclass_name} ||= do{
 
-        my $possible_full_name =
-            'Mouse::Meta::' 
-          . $type
-          . '::Custom::'
-          . $metaclass_name;
+            my $possible_full_name = join '::',
+                'Mouse::Meta', $type, 'Custom', ($options{trait} ? 'Trait' : ()), $metaclass_name
+            ;
 
-        my $loaded_class =
-          load_first_existing_class( $possible_full_name,
-            $metaclass_name );
+            my $loaded_class = load_first_existing_class(
+                $possible_full_name,
+                $metaclass_name
+            );
 
-        return $cache{$cache_key}{$metaclass_name} =
             $loaded_class->can('register_implementation')
-          ? $loaded_class->register_implementation
-          : $loaded_class;
+                ? $loaded_class->register_implementation
+                : $loaded_class;
+        };
     }
 }
 
@@ -238,13 +263,26 @@ sub apply_all_roles {
     return;
 }
 
+# taken from Moose::Util 0.90
+sub english_list {
+    return $_[0] if @_ == 1;
+
+    my @items = sort @_;
+
+    return "$items[0] and $items[1]" if @items == 2;
+
+    my $tail = pop @items;
+
+    return join q{, }, @items, "and $tail";
+}
+
 sub not_supported{
     my($feature) = @_;
 
     $feature ||= ( caller(1) )[3]; # subroutine name
 
-    local $Carp::CarpLevel = $Carp::CarpLevel + 2;
-    Carp::croak("Mouse does not currently support $feature");
+    local $Carp::CarpLevel = $Carp::CarpLevel + 1;
+    Carp::confess("Mouse does not currently support $feature");
 }
 
 1;
@@ -257,9 +295,41 @@ Mouse::Util - features, with or without their dependencies
 
 =head1 IMPLEMENTATIONS FOR
 
-=head2 L<MRO::Compat>
+=head2 Moose::Util
+
+=head3 C<find_meta>
+
+=head3 C<does_role>
+
+=head3 C<resolve_metaclass_alias>
+
+=head3 C<apply_all_roles>
+
+=head3 C<english_list>
+
+=head2 Class::MOP
+
+=head3 C<is_class_loaded>
+
+=head3 C<load_class>
+
+=head2 MRO::Compat
+
+=head3 C<get_linear_isa>
+
+=head2 Sub::Identify
+
+=head3 C<get_code_info>
+
+=head1 UTILITIES FOR MOUSE
+
+=over 4
+
+=item *
+
+C<not_supported>
 
-=head3 get_linear_isa
+=back
 
 =cut