X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse.pm;h=4f6e8f9647be01592d3ccf3b3f3be1dfa27a8f4e;hb=6cfa1e5e70616fb102915489c02d8347ffa912fb;hp=97914a6b2ade94d63e076539a8f5553703f99abe;hpb=7daedfff24bc2061ea1028f415b2e914bd8f1639;p=gitmo%2FMouse.git diff --git a/lib/Mouse.pm b/lib/Mouse.pm index 97914a6..4f6e8f9 100644 --- a/lib/Mouse.pm +++ b/lib/Mouse.pm @@ -4,43 +4,29 @@ use warnings; use 5.006; use base 'Exporter'; -our $VERSION = '0.15'; - -BEGIN { - if ($ENV{MOUSE_DEBUG}) { - *DEBUG = sub (){ 1 }; - } else { - *DEBUG = sub (){ 0 }; - } -} +our $VERSION = '0.30'; use Carp 'confess'; use Scalar::Util 'blessed'; -use Mouse::Util; +use Mouse::Util qw(load_class is_class_loaded); use Mouse::Meta::Attribute; +use Mouse::Meta::Module; # class_of() use Mouse::Meta::Class; use Mouse::Object; -use Mouse::TypeRegistry; +use Mouse::Util::TypeConstraints; + +our @EXPORT = qw(extends has before after around override super blessed confess with); -our @EXPORT = qw(extends has before after around blessed confess with); +our %is_removable = map{ $_ => undef } @EXPORT; +delete $is_removable{blessed}; +delete $is_removable{confess}; sub extends { Mouse::Meta::Class->initialize(caller)->superclasses(@_) } sub has { my $meta = Mouse::Meta::Class->initialize(caller); - - my $names = shift; - $names = [$names] if !ref($names); - - for my $name (@$names) { - if ($name =~ s/^\+//) { - Mouse::Meta::Attribute->clone_parent($meta, $name, @_); - } - else { - Mouse::Meta::Attribute->create($meta, $name, @_); - } - } + $meta->add_attribute(@_); } sub before { @@ -77,13 +63,91 @@ sub with { Mouse::Util::apply_all_roles((caller)[0], @_); } +our $SUPER_PACKAGE; +our $SUPER_BODY; +our @SUPER_ARGS; + +sub super { + # This check avoids a recursion loop - see + # t/100_bugs/020_super_recursion.t + return if defined $SUPER_PACKAGE && $SUPER_PACKAGE ne caller(); + return unless $SUPER_BODY; $SUPER_BODY->(@SUPER_ARGS); +} + +sub override { + my $meta = Mouse::Meta::Class->initialize(caller); + my $pkg = $meta->name; + + my $name = shift; + my $code = shift; + + my $body = $pkg->can($name) + or confess "You cannot override '$name' because it has no super method"; + + $meta->add_method($name => sub { + local $SUPER_PACKAGE = $pkg; + local @SUPER_ARGS = @_; + local $SUPER_BODY = $body; + + $code->(@_); + }); +} + +sub init_meta { + # This used to be called as a function. This hack preserves + # backwards compatibility. + if ( $_[0] ne __PACKAGE__ ) { + return __PACKAGE__->init_meta( + for_class => $_[0], + base_class => $_[1], + metaclass => $_[2], + ); + } + + shift; + my %args = @_; + + my $class = $args{for_class} + or Carp::croak( + "Cannot call init_meta without specifying a for_class"); + my $base_class = $args{base_class} || 'Mouse::Object'; + my $metaclass = $args{metaclass} || 'Mouse::Meta::Class'; + + Carp::croak("The Metaclass $metaclass must be a subclass of Mouse::Meta::Class.") + unless $metaclass->isa('Mouse::Meta::Class'); + + # make a subtype for each Mouse class + class_type($class) + unless find_type_constraint($class); + + my $meta = $metaclass->initialize($class); + $meta->superclasses($base_class) + unless $meta->superclasses; + + $meta->add_method(meta => sub{ + return Mouse::Meta::Class->initialize(ref($_[0]) || $_[0]); + }); + + + return $meta; +} + sub import { my $class = shift; strict->import; warnings->import; - my $caller = caller; + my $opts = do { + if (ref($_[0]) && ref($_[0]) eq 'HASH') { + shift @_; + } else { + +{ }; + } + }; + my $level = delete $opts->{into_level}; + $level = 0 unless defined $level; + my $caller = caller($level); # we should never export to main if ($caller eq 'main') { @@ -91,16 +155,12 @@ sub import { return; } - my $meta = Mouse::Meta::Class->initialize($caller); - $meta->superclasses('Mouse::Object') - unless $meta->superclasses; - - no strict 'refs'; - no warnings 'redefine'; - *{$caller.'::meta'} = sub { $meta }; + Mouse->init_meta( + for_class => $caller, + ); if (@_) { - __PACKAGE__->export_to_level( 1, $class, @_); + __PACKAGE__->export_to_level( $level+1, $class, @_); } else { # shortcut for the common case of no type character no strict 'refs'; @@ -113,59 +173,20 @@ sub import { sub unimport { my $caller = caller; - no strict 'refs'; - for my $keyword (@EXPORT) { - delete ${ $caller . '::' }{$keyword}; - } -} - -sub load_class { - my $class = shift; - - if (ref($class) || !defined($class) || !length($class)) { - my $display = defined($class) ? $class : 'undef'; - confess "Invalid class name ($display)"; - } - - return 1 if $class eq 'Mouse::Object'; - return 1 if is_class_loaded($class); - - (my $file = "$class.pm") =~ s{::}{/}g; - - eval { CORE::require($file) }; - confess "Could not load class ($class) because : $@" if $@; - - 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)) { - return 0 unless exists ${$$pack}{"${part}::"}; - $pack = \*{${$$pack}{"${part}::"}}; - } + my $stash = do{ + no strict 'refs'; + \%{$caller . '::'} + }; - # check for $VERSION or @ISA - return 1 if exists ${$$pack}{VERSION} - && defined *{${$$pack}{VERSION}}{SCALAR}; - return 1 if exists ${$$pack}{ISA} - && defined *{${$$pack}{ISA}}{ARRAY}; + for my $keyword (@EXPORT) { + my $code; + if(exists $is_removable{$keyword} + && ($code = $caller->can($keyword)) + && (Mouse::Util::get_code_info($code))[0] eq __PACKAGE__){ - # check for any method - foreach ( keys %{$$pack} ) { - next if substr($_, -2, 2) eq '::'; - return 1 if defined *{${$$pack}{$_}}{CODE}; + delete $stash->{$keyword}; + } } - - # fail - return 0; } 1; @@ -204,21 +225,21 @@ Mouse - Moose minus the antlers =head1 DESCRIPTION -L is wonderful. +L is wonderful. B -Unfortunately, it's a little slow. Though significant progress has been made -over the years, the compile time penalty is a non-starter for some -applications. +Unfortunately, Moose has a compile-time penalty. Though significant progress +has been made over the years, the compile time penalty is a non-starter for +some very specific applications. If you are writing a command-line application +or CGI script where startup time is essential, you may not be able to use +Moose. We recommend that you instead use L and FastCGI for the +latter, if possible. -Mouse aims to alleviate this by providing a subset of Moose's -functionality, faster. In particular, L is missing only a few -expert-level features. +Mouse aims to alleviate this by providing a subset of Moose's functionality, +faster. -We're also going as light on dependencies as possible. Most functions we use -from L are copied into this dist. L is required if -you'd like weak references; there's simply no way to do it from pure Perl. -L is required if you want support for L, -L, and L. +We're also going as light on dependencies as possible. +L or L is required +if you want support for L, L, and L. =head2 MOOSE COMPAT @@ -229,10 +250,28 @@ runs the test suite 4x faster. The idea is that, if you need the extra power, you should be able to run C on your codebase and have nothing break. To that end, -nothingmuch has written L (part of this distribution) which will act -as Mouse unless Moose is loaded, in which case it will act as Moose. +we have written L which will act as Mouse unless Moose is loaded, +in which case it will act as Moose. Since Mouse is a little sloppier than +Moose, if you run into weird errors, it would be worth running: + + ANY_MOOSE=Moose perl your-script.pl + +to see if the bug is caused by Mouse. Moose's diagnostics and validation are +also much better. + +=head2 MouseX + +Please don't copy MooseX code to MouseX. If you need extensions, you really +should upgrade to Moose. We don't need two parallel sets of extensions! + +If you really must write a Mouse extension, please contact the Moose mailing +list or #moose on IRC beforehand. -Mouse also has the blessings of Moose's author, stevan. +=head2 Maintenance + +The original author of this module has mostly stepped down from maintaining +Mouse. See L. +If you would like to help maintain this module, please get in touch with us. =head1 KEYWORDS @@ -279,10 +318,16 @@ the attribute. =item isa => TypeConstraint -Provides basic type checking in the constructor and accessor. Basic types such -as C, C, C are supported. Any unknown type is taken to -be a class check (e.g. isa => 'DateTime' would accept only L -objects). +Provides type checking in the constructor and accessor. The following types are +supported. Any unknown type is taken to be a class check (e.g. isa => +'DateTime' would accept only L objects). + + Any Item Bool Undef Defined Value Num Int Str ClassName + Ref ScalarRef ArrayRef HashRef CodeRef RegexpRef GlobRef + FileHandle Object + +For more documentation on type constraints, see L. + =item required => 0|1 @@ -392,6 +437,12 @@ Returns whether this class is actually loaded or not. It uses a heuristic which involves checking for the existence of C<$VERSION>, C<@ISA>, and any locally-defined method. +=head1 SOURCE CODE ACCESS + +We have a public git repo: + + git clone git://jules.scsys.co.uk/gitmo/Mouse.git + =head1 AUTHORS Shawn M Moore, C<< >> @@ -402,11 +453,15 @@ tokuhirom Yappo +wu-lee + with plenty of code borrowed from L and L =head1 BUGS -No known bugs. +There is a known issue with Mouse on 5.6.2 regarding the @ISA tests. Until +this is resolve the minimum version of Perl for Mouse is set to 5.8.0. Patches +to resolve these tests are more than welcome. Please report any bugs through RT: email C, or browse @@ -414,7 +469,9 @@ L. =head1 COPYRIGHT AND LICENSE -Copyright 2008 Shawn M Moore. +Copyright 2008-2009 Infinity Interactive, Inc. + +http://www.iinteractive.com/ This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.