X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=9a34e0caae9386e9e246a445e7f7765acb6522bf;hp=835db2adb7d6c6ba8f8f7132455cecf4bb6409c2;hb=0e81c55d54fbd14fb67d6f22c184df2d0d7059c0;hpb=bedd575c2018fe372304d9c03b1e9427435c9622 diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm index 835db2a..9a34e0c 100644 --- a/lib/Mouse/Util.pm +++ b/lib/Mouse/Util.pm @@ -1,50 +1,62 @@ package Mouse::Util; -use strict; -use warnings; - -use Exporter; +use Mouse::Exporter; # enables strict and warnings use Carp qw(confess); +use Scalar::Util qw(blessed); use B (); use constant _MOUSE_VERBOSE => !!$ENV{MOUSE_VERBOSE}; -our @ISA = qw(Exporter); -our @EXPORT_OK = qw( - find_meta - does_role - resolve_metaclass_alias - apply_all_roles - english_list +Mouse::Exporter->setup_import_methods( + as_is => [qw( + find_meta + does_role + resolve_metaclass_alias + apply_all_roles + english_list - load_class - is_class_loaded + load_class + is_class_loaded - get_linear_isa - get_code_info + get_linear_isa + get_code_info - get_code_package + get_code_package - not_supported + not_supported - does meta dump - _MOUSE_VERBOSE -); -our %EXPORT_TAGS = ( - all => \@EXPORT_OK, - meta => [qw(does meta dump _MOUSE_VERBOSE)], + does meta dump + _MOUSE_VERBOSE + )], + groups => { + default => [], # export no functions by default + + # The ':meta' group is 'use metaclass' for Mouse + meta => [qw(does meta dump _MOUSE_VERBOSE)], + }, ); +# aliases as public APIs +# it must be 'require', not 'use', 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()"); @@ -52,8 +64,6 @@ sub does_role{ return defined($meta) && $meta->does_role($role_name); } - - BEGIN { my $impl; if ($] >= 5.009_005) { @@ -151,6 +161,9 @@ BEGIN { } } +# Utilities from Class::MOP + + # taken from Class/MOP.pm sub is_valid_class_name { my $class = shift; @@ -191,6 +204,7 @@ sub load_first_existing_class { } # taken from Class/MOP.pm +my %is_class_loaded_cache; sub _try_load_one_class { my $class = shift; @@ -199,7 +213,7 @@ sub _try_load_one_class { confess "Invalid class name ($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; @@ -220,14 +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:: @@ -239,15 +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 @@ -256,7 +268,7 @@ sub is_class_loaded { sub apply_all_roles { - my $meta = Mouse::Meta::Class->initialize(shift); + my $applicant = blessed($_[0]) ? shift : Mouse::Meta::Class->initialize(shift); my @roles; @@ -264,22 +276,24 @@ sub apply_all_roles { my $max = scalar(@_); for (my $i = 0; $i < $max ; $i++) { if ($i + 1 < $max && ref($_[$i + 1])) { - push @roles, [ $_[$i++] => $_[$i] ]; + push @roles, [ $_[$i] => $_[++$i] ]; } else { - push @roles, [ $_[$i] => undef ]; + push @roles, [ $_[$i] => undef ]; } 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"); + + my $metarole = get_metaclass_by_name($role_name); + ( $metarole && $metarole->isa('Mouse::Meta::Role') ) + || $applicant->meta->throw_error("You can only consume roles, $role_name(".$role_name->meta.") is not a Mouse role"); } if ( scalar @roles == 1 ) { - my ( $role, $params ) = @{ $roles[0] }; - $role->meta->apply( $meta, ( defined $params ? %$params : () ) ); + my ( $role_name, $params ) = @{ $roles[0] }; + get_metaclass_by_name($role_name)->apply( $applicant, defined $params ? $params : () ); } else { - Mouse::Meta::Role->combine_apply($meta, @roles); + Mouse::Meta::Role->combine(@roles)->apply($applicant); } return; } @@ -309,11 +323,13 @@ sub not_supported{ Carp::confess("Mouse does not currently support $feature"); } -sub meta{ - return Mouse::Meta::Class->initialize($_[0]); +# general meta() method +sub meta :method{ + return Mouse::Meta::Class->initialize(ref($_[0]) || $_[0]); } -sub dump { +# general dump() method +sub dump :method { my($self, $maxdepth) = @_; require 'Data/Dumper.pm'; # we don't want to create its namespace @@ -323,6 +339,7 @@ sub dump { return $dd->Dump(); } +# general does() method sub does :method; *does = \&does_role; # alias @@ -334,6 +351,10 @@ __END__ Mouse::Util - Features, with or without their dependencies +=head1 VERSION + +This document describes Mouse version 0.40 + =head1 IMPLEMENTATIONS FOR =head2 Moose::Util @@ -358,10 +379,18 @@ locally-defined method. =head3 C<< load_class(ClassName) >> -This will load a given C (or die if it's not loadable). +This will load a given C (or die if it is not loadable). This function can be used in place of tricks like C or using C. +=head3 C<< Mouse::Util::class_of(ClassName or Object) >> + +=head3 C<< Mouse::Util::get_metaclass_by_name(ClassName) >> + +=head3 C<< Mouse::Util::get_all_metaclass_instances() >> + +=head3 C<< Mouse::Util::get_all_metaclass_names() >> + =head2 MRO::Compat =head3 C @@ -378,7 +407,7 @@ C or using C. L -L +L L