use strict;
use warnings;
use base qw/Exporter/;
+
use Carp qw(confess);
use B ();
our @EXPORT_OK = qw(
- get_linear_isa
+ find_meta
+ does_role
+ resolve_metaclass_alias
+ english_list
+
+ load_class
+ is_class_loaded
+
apply_all_roles
+ not_supported
+
+ get_linear_isa
get_code_info
);
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) = @_;\r
+\r
+ my $meta = Mouse::Meta::Module::class_of($class_or_obj);\r
+\r
+ return 0 unless defined $meta;\r
+ return 1 if $meta->does_role($role);\r
+ return 0;
+}
+
+
+
BEGIN {
my $impl;
if ($] >= 5.009_005) {
}\r
}
-# 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 $possible_full_name =
- 'Mouse::Meta::'
- . $type
- . '::Custom::'
- . $metaclass_name;
-
- my $loaded_class =
- load_first_existing_class( $possible_full_name,
- $metaclass_name );
+ sub resolve_metaclass_alias {\r
+ my ( $type, $metaclass_name, %options ) = @_;\r
+\r
+ my $cache_key = $type . q{ } . ( $options{trait} ? '-Trait' : '' );\r
- return $cache{$cache_key}{$metaclass_name} =
- $loaded_class->can('register_implementation')
- ? $loaded_class->register_implementation
- : $loaded_class;
+ return $cache{$cache_key}{$metaclass_name} ||= do{\r
+\r
+ my $possible_full_name = join '::',
+ 'Mouse::Meta', $type, 'Custom', ($options{trait} ? 'Trait' : ()), $metaclass_name
+ ;
+
+ my $loaded_class = load_first_existing_class(\r
+ $possible_full_name,\r
+ $metaclass_name\r
+ );\r
+\r
+ $loaded_class->can('register_implementation')\r
+ ? $loaded_class->register_implementation\r
+ : $loaded_class;
+ };\r
}
}
return 0 if ref($class);
return 0 unless defined($class);
- return 0 unless length($class);
return 1 if $class =~ /^\w+(?:::\w+)*$/;
my $found;
my %exceptions;
for my $class (@classes) {
- unless ( is_valid_class_name($class) ) {
- my $display = defined($class) ? $class : 'undef';
- confess "Invalid class name ($display)";
- }
-
my $e = _try_load_one_class($class);
if ($e) {
sub _try_load_one_class {
my $class = shift;
- return if Mouse::is_class_loaded($class);
+ unless ( is_valid_class_name($class) ) {
+ my $display = defined($class) ? $class : 'undef';
+ confess "Invalid class name ($display)";
+ }
+
+ return if is_class_loaded($class);
my $file = $class . '.pm';
$file =~ s{::}{/}g;
};
}
+
+sub load_class {
+ my $class = shift;
+ my $e = _try_load_one_class($class);
+ confess "Could not load class ($class) because : $e" if $e;
+
+ 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::
+
+ my $pack = \%::;
+ foreach my $part (split('::', $class)) {
+ my $entry = \$pack->{$part . '::'};
+ return 0 if ref($entry) ne 'GLOB';
+ $pack = *{$entry}{HASH} or return 0;
+ }
+
+ # check for $VERSION or @ISA
+ return ++$is_class_loaded_cache{$class} if exists $pack->{VERSION}
+ && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} };
+ return ++$is_class_loaded_cache{$class} 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};
+ }
+
+ # fail
+ return 0;
+}
+
+
sub apply_all_roles {
my $meta = Mouse::Meta::Class->initialize(shift);
} else {
push @roles, [ $_[$i] => {} ];
}
+ my $role_name = $roles[-1][0];
+ load_class($role_name);
+ ( $role_name->can('meta') && $role_name->meta->isa('Mouse::Meta::Role') )
+ || $meta->throw_error("You can only consume roles, $role_name(".$role_name->meta.") is not a Mouse role");
}
- foreach my $role_spec (@roles) {
- Mouse::load_class( $role_spec->[0] );
- }
-
- ( $_->[0]->can('meta') && $_->[0]->meta->isa('Mouse::Meta::Role') )
- || confess("You can only consume roles, "
- . $_->[0]
- . " is not a Moose role")
- foreach @roles;
-
if ( scalar @roles == 1 ) {
my ( $role, $params ) = @{ $roles[0] };
$role->meta->apply( $meta, ( defined $params ? %$params : () ) );
return;
}
+# taken from Moose::Util 0.90
+sub english_list {
+ return $_[0] if @_ == 1;\r
+
+ my @items = sort @_;\r
+\r
+ return "$items[0] and $items[1]" if @items == 2;\r
+\r
+ my $tail = pop @items;\r
+\r
+ return join q{, }, @items, "and $tail";\r
+}
+
+sub not_supported{
+ my($feature) = @_;
+
+ $feature ||= ( caller(1) )[3]; # subroutine name
+
+ local $Carp::CarpLevel = $Carp::CarpLevel + 2;
+ Carp::croak("Mouse does not currently support $feature");
+}
+
1;
__END__
projects / gitmo/Mouse.git / blobdiff