X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=f24da52f53263a3a64f8fe3d00d7cb5d7c1b322a;hp=fa0642390cb72024f55e055f7c6f10afc6ce6b30;hb=df6dd016657118a06b408d21767dbc9b4ca476b9;hpb=7ca5c5fb6e084d9c57bc022b336458afc74c6847 diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm index fa06423..f24da52 100644 --- a/lib/Mouse/Util.pm +++ b/lib/Mouse/Util.pm @@ -1,42 +1,84 @@ package Mouse::Util; -use strict; -use warnings; -use base qw/Exporter/; +use Mouse::Exporter; # enables strict and warnings + +BEGIN{ + # Because Mouse::Util is loaded first in all the Mouse sub-modules, + # XS loader is placed here, not in Mouse.pm. + + our $VERSION = '0.40'; + + my $need_pp = !!$ENV{MOUSE_PUREPERL}; + + if(!$need_pp && !exists $INC{'Mouse/PurePerl.pm'}){ + local $@; + $need_pp = !eval{ + require XSLoader; + XSLoader::load('Mouse', $VERSION); + }; + warn $@ if $@; # for DEBUGGING + } + + if($need_pp){ + require 'Mouse/PurePerl.pm'; # we don't want to create its namespace + } +} + use Carp qw(confess); +use Scalar::Util qw(blessed); -our @EXPORT_OK = qw( - find_meta - does_role - resolve_metaclass_alias - apply_all_roles - english_list +use constant _MOUSE_VERBOSE => !!$ENV{MOUSE_VERBOSE}; - load_class - is_class_loaded +Mouse::Exporter->setup_import_methods( + as_is => [qw( + find_meta + does_role + resolve_metaclass_alias + apply_all_roles + english_list - get_linear_isa - get_code_info + load_class + is_class_loaded - not_supported + get_linear_isa + get_code_info - does meta dump -); -our %EXPORT_TAGS = ( - all => \@EXPORT_OK, - meta => [qw(does meta dump)], + get_code_package + + not_supported + + 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()"); @@ -44,8 +86,6 @@ sub does_role{ return defined($meta) && $meta->does_role($role_name); } - - BEGIN { my $impl; if ($] >= 5.009_005) { @@ -89,22 +129,6 @@ BEGIN { *get_linear_isa = $impl; } -{ # taken from Sub::Identify - sub get_code_info($) { - my ($coderef) = @_; - ref($coderef) or return; - - require B; - - 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); - } -} # taken from Mouse::Util (0.90) { @@ -133,6 +157,11 @@ BEGIN { } } +# Utilities from Class::MOP + +sub get_code_info; +sub get_code_package; + # taken from Class/MOP.pm sub is_valid_class_name { my $class = shift; @@ -173,6 +202,7 @@ sub load_first_existing_class { } # taken from Class/MOP.pm +my %is_class_loaded_cache; sub _try_load_one_class { my $class = shift; @@ -181,7 +211,7 @@ sub _try_load_one_class { confess "Invalid class name ($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; @@ -202,43 +232,11 @@ 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:: - - 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 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; @@ -246,22 +244,24 @@ 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; } @@ -291,11 +291,13 @@ 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 @@ -305,6 +307,7 @@ sub dump { return $dd->Dump(); } +# general does() method sub does :method; *does = \&does_role; # alias @@ -314,7 +317,11 @@ __END__ =head1 NAME -Mouse::Util - features, with or without their dependencies +Mouse::Util - Features, with or without their dependencies + +=head1 VERSION + +This document describes Mouse version 0.40 =head1 IMPLEMENTATIONS FOR @@ -332,7 +339,7 @@ Mouse::Util - features, with or without their dependencies =head2 Class::MOP -=head2 C<< is_class_loaded(ClassName) -> Bool >> +=head3 C<< is_class_loaded(ClassName) -> Bool >> Returns whether C is actually loaded or not. It uses a heuristic which involves checking for the existence of C<$VERSION>, C<@ISA>, and any @@ -340,10 +347,18 @@ 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 @@ -354,19 +369,13 @@ C or using C. =head1 UTILITIES FOR MOUSE -=over 4 - -=item * - -C - -=back +=head3 C =head1 SEE ALSO L -L +L L