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=deee325863b96522e4e428bc69fffac999840e7b;hb=df6dd016657118a06b408d21767dbc9b4ca476b9;hpb=7727a2f03f4837d7b043d011bf9f7d48215b9948 diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm index deee325..f24da52 100644 --- a/lib/Mouse/Util.pm +++ b/lib/Mouse/Util.pm @@ -1,43 +1,65 @@ package Mouse::Util; -use strict; -use warnings; +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 Exporter; use Carp qw(confess); -use B (); +use Scalar::Util qw(blessed); 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', because Mouse::Meta::Module depends on Mouse::Util +# 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 { @@ -107,32 +129,6 @@ BEGIN { *get_linear_isa = $impl; } -{ # taken from Sub::Identify - sub get_code_info($) { - 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) { @@ -163,6 +159,8 @@ BEGIN { # Utilities from Class::MOP +sub get_code_info; +sub get_code_package; # taken from Class/MOP.pm sub is_valid_class_name { @@ -204,6 +202,7 @@ sub load_first_existing_class { } # taken from Class/MOP.pm +my %is_class_loaded_cache; sub _try_load_one_class { my $class = shift; @@ -212,7 +211,7 @@ sub _try_load_one_class { confess "Invalid class name ($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; @@ -233,43 +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; @@ -277,22 +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; } @@ -322,11 +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 @@ -336,6 +307,7 @@ sub dump { return $dd->Dump(); } +# general does() method sub does :method; *does = \&does_role; # alias @@ -347,6 +319,10 @@ __END__ Mouse::Util - Features, with or without their dependencies +=head1 VERSION + +This document describes Mouse version 0.40 + =head1 IMPLEMENTATIONS FOR =head2 Moose::Util @@ -375,13 +351,13 @@ 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. -=head2 C<< Mouse::Util::class_of(ClassName) >> +=head3 C<< Mouse::Util::class_of(ClassName or Object) >> -The counterpart of C. This is not exportable. +=head3 C<< Mouse::Util::get_metaclass_by_name(ClassName) >> -=head2 C<< Mouse::Util::get_metaclass_by_name(ClassName) >> +=head3 C<< Mouse::Util::get_all_metaclass_instances() >> -The counterpart of C. This is not exportable. +=head3 C<< Mouse::Util::get_all_metaclass_names() >> =head2 MRO::Compat @@ -399,7 +375,7 @@ The counterpart of C. This is not exportabl L -L +L L