X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FUtil.pm;h=c3f1f39f01728e90017e6f9ee7dabeaa074e76eb;hp=7bff75c0be8f33adb2658627af39ef6fccb4129f;hb=b4d1723ead47f05198e369a2d38ba9e4a3a59354;hpb=06a970ab9fb60a4cac5e3f1774cf9a2914c94cc1 diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm index 7bff75c..c3f1f39 100644 --- a/lib/Mouse/Util.pm +++ b/lib/Mouse/Util.pm @@ -1,53 +1,96 @@ package Mouse::Util; use Mouse::Exporter; # enables strict and warnings -use Carp qw(confess); -use Scalar::Util qw(blessed); -use B (); +sub get_linear_isa($;$); # must be here -use constant _MOUSE_VERBOSE => !!$ENV{MOUSE_VERBOSE}; +BEGIN{ + # This is used in Mouse::PurePerl + 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 + + get_linear_isa + get_code_info + + get_code_package + get_code_ref + + not_supported + + does meta dump + )], + groups => { + default => [], # export no functions by default + + # The ':meta' group is 'use metaclass' for Mouse + meta => [qw(does meta dump)], + }, + ); + + + # 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_08'; -Mouse::Exporter->setup_import_methods( - as_is => [qw( - find_meta - does_role - resolve_metaclass_alias - apply_all_roles - english_list + my $xs = !(exists $INC{'Mouse/PurePerl.pm'} || $ENV{MOUSE_PUREPERL}); - load_class - is_class_loaded + if($xs){ + local $@; + + # XXX: XSLoader tries to get the object path from caller's file name + # $hack_mouse_file fools its mechanism - get_linear_isa - get_code_info + (my $hack_mouse_file = __FILE__) =~ s/.Util//; # .../Mouse/Util.pm -> .../Mouse.pm + $xs = eval sprintf("#line %d %s\n", __LINE__, $hack_mouse_file) . q{ + require XSLoader; + XSLoader::load('Mouse', $VERSION); - get_code_package + *Mouse::Meta::Method::Constructor::XS::meta = \&meta; + *Mouse::Meta::Method::Destructor::XS::meta = \&meta; + }; + #warn $@ if $@; + } - not_supported + if(!$xs){ + require 'Mouse/PurePerl.pm'; # we don't want to create its namespace + } - does meta dump - _MOUSE_VERBOSE - )], - groups => { - default => [], # export no functions by default + *MOUSE_XS = sub(){ $xs }; +} - # The ':meta' group is 'use metaclass' for Mouse - meta => [qw(does meta dump _MOUSE_VERBOSE)], - }, - _export_to_main => 1, -); + +use Carp (); +use Scalar::Util (); + +use constant _MOUSE_VERBOSE => !!$ENV{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; + *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; + + # is-a predicates + generate_isa_predicate_for('Mouse::Meta::TypeConstraint' => 'is_a_type_constraint'); + generate_isa_predicate_for('Mouse::Meta::Class' => 'is_a_metaclass'); + generate_isa_predicate_for('Mouse::Meta::Role' => 'is_a_metarole'); } +our $in_global_destruction = 0; +END{ $in_global_destruction = 1 } + # Moose::Util compatible utilities sub find_meta{ @@ -66,10 +109,10 @@ sub does_role{ } BEGIN { - my $impl; + my $get_linear_isa; if ($] >= 5.009_005) { require mro; - $impl = \&mro::get_linear_isa; + $get_linear_isa = \&mro::get_linear_isa; } else { my $e = do { local $@; @@ -77,11 +120,11 @@ BEGIN { $@; }; if (!$e) { - $impl = \&mro::get_linear_isa; + $get_linear_isa = \&mro::get_linear_isa; } else { # VVVVV CODE TAKEN FROM MRO::COMPAT VVVVV my $_get_linear_isa_dfs; # this recurses so it isn't pretty - $_get_linear_isa_dfs = sub { + $_get_linear_isa_dfs = sub ($;$){ no strict 'refs'; my $classname = shift; @@ -99,41 +142,13 @@ BEGIN { return \@lin; }; # ^^^^^ CODE TAKEN FROM MRO::COMPAT ^^^^^ - $impl = $_get_linear_isa_dfs; + $get_linear_isa = $_get_linear_isa_dfs; } } - - no warnings 'once'; - *get_linear_isa = $impl; + *get_linear_isa = $get_linear_isa; } -{ # taken from Sub::Identify - sub get_code_info($) { - my ($coderef) = @_; - ref($coderef) or return; - - 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, $gv->NAME); - } - - sub get_code_package{ - my($coderef) = @_; - - my $cv = B::svref_2object($coderef); - $cv->isa('B::CV') or return ''; - - my $gv = $cv->GV; - $gv->isa('B::GV') or return ''; - - return $gv->STASH->NAME; - } -} # taken from Mouse::Util (0.90) { @@ -164,6 +179,8 @@ BEGIN { # Utilities from Class::MOP +sub get_code_info; +sub get_code_package; # taken from Class/MOP.pm sub is_valid_class_name { @@ -172,7 +189,7 @@ sub is_valid_class_name { return 0 if ref($class); return 0 unless defined($class); - return 1 if $class =~ /^\w+(?:::\w+)*$/; + return 1 if $class =~ /\A \w+ (?: :: \w+ )* \z/xms; return 0; } @@ -195,7 +212,7 @@ sub load_first_existing_class { } # not found - confess join( + Carp::confess join( "\n", map { sprintf( "Could not load class (%s) because : %s", @@ -211,7 +228,7 @@ sub _try_load_one_class { unless ( is_valid_class_name($class) ) { my $display = defined($class) ? $class : 'undef'; - confess "Invalid class name ($display)"; + Carp::confess "Invalid class name ($display)"; } return undef if $is_class_loaded_cache{$class} ||= is_class_loaded($class); @@ -230,46 +247,18 @@ sub _try_load_one_class { sub load_class { my $class = shift; my $e = _try_load_one_class($class); - confess "Could not load class ($class) because : $e" if $e; + Carp::confess "Could not load class ($class) because : $e" if $e; return 1; } - -sub is_class_loaded { - my $class = shift; - - return 0 if ref($class) || !defined($class) || !length($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 1 if exists $pack->{VERSION} - && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} }; - 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 1 if ref($entry) ne 'GLOB' || defined *{$entry}{CODE}; - } - - # fail - return 0; -} +sub is_class_loaded; sub apply_all_roles { - my $applicant = blessed($_[0]) ? shift : Mouse::Meta::Class->initialize(shift); + my $applicant = Scalar::Util::blessed($_[0]) + ? shift # instance + : Mouse::Meta::Class->initialize(shift); # class or role name my @roles; @@ -284,9 +273,8 @@ sub apply_all_roles { my $role_name = $roles[-1][0]; load_class($role_name); - 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"); + is_a_metarole( get_metaclass_by_name($role_name) ) + || $applicant->meta->throw_error("You can only consume roles, $role_name is not a Mouse role"); } if ( scalar @roles == 1 ) { @@ -354,7 +342,7 @@ Mouse::Util - Features, with or without their dependencies =head1 VERSION -This document describes Mouse version 0.38 +This document describes Mouse version 0.40_08 =head1 IMPLEMENTATIONS FOR