X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse.pm;h=ea37765f23422c63e28b32e46e5d47161eff1622;hp=c529135f91715e4846dd42383f9e84d66eaf921d;hb=6614c108c8352daf75d6991ec550d1f520bc76f1;hpb=7a024324a4bc51897bafff2b9cf86998ae7cbe98 diff --git a/lib/Mouse.pm b/lib/Mouse.pm index c529135..ea37765 100644 --- a/lib/Mouse.pm +++ b/lib/Mouse.pm @@ -1,38 +1,27 @@ -#!/usr/bin/env perl package Mouse; use strict; use warnings; +use 5.006; use base 'Exporter'; -our $VERSION = '0.10'; -use 5.006; +our $VERSION = '0.20'; use Carp 'confess'; -use Mouse::Util 'blessed'; +use Scalar::Util 'blessed'; +use Mouse::Util; use Mouse::Meta::Attribute; use Mouse::Meta::Class; use Mouse::Object; -use Mouse::TypeRegistry; +use Mouse::Util::TypeConstraints; -our @EXPORT = qw(extends has before after around blessed confess with); +our @EXPORT = qw(extends has before after around override super blessed confess with); 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 { @@ -66,31 +55,82 @@ sub around { } 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 $role = shift; + my $name = shift; + my $code = shift; - confess "Mouse::Role only supports 'with' on individual roles at a time" if @_; + my $body = $pkg->can($name) + or confess "You cannot override '$name' because it has no super method"; - Mouse::load_class($role); - $role->meta->apply($meta); + $meta->add_method($name => sub { + local $SUPER_PACKAGE = $pkg; + local @SUPER_ARGS = @_; + local $SUPER_BODY = $body; + + $code->(@_); + }); } 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 ($caller eq 'main') { + warn qq{$class does not export its sugar to the 'main' package.\n}; + return; + } my $meta = Mouse::Meta::Class->initialize($caller); $meta->superclasses('Mouse::Object') unless $meta->superclasses; + # make a subtype for each Mouse class + class_type($caller) unless find_type_constraint($caller); + no strict 'refs'; no warnings 'redefine'; *{$caller.'::meta'} = sub { $meta }; - Mouse->export_to_level(1, @_); + if (@_) { + __PACKAGE__->export_to_level( $level+1, $class, @_); + } else { + # shortcut for the common case of no type character + no strict 'refs'; + for my $keyword (@EXPORT) { + *{ $caller . '::' . $keyword } = *{__PACKAGE__ . '::' . $keyword}; + } + } } sub unimport { @@ -110,6 +150,7 @@ sub load_class { confess "Invalid class name ($display)"; } + return 1 if $class eq 'Mouse::Object'; return 1 if is_class_loaded($class); (my $file = "$class.pm") =~ s{::}{/}g; @@ -186,21 +227,18 @@ 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 +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 applications. -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 @@ -211,37 +249,16 @@ 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. - -Mouse also has the blessings of Moose's author, stevan. - -=head2 MISSING FEATURES - -=head3 Roles - -We're working on fixing this one! stevan has suggested an implementation -strategy. Mouse currently ignores methods, so that needs to be fixed next. -Roles that consist entirely of attributes may be usable in this very version. - -=head3 Complex types +we have written L which will act as Mouse unless Moose is loaded, +in which case it will act as Moose. -User-defined type constraints and parameterized types may be implemented. Type -coercions probably not (patches welcome). +=head2 MouseX -=head3 Bootstrapped meta world +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! -Very handy for extensions to the MOP. Not pressing, but would be nice to have. - -=head3 Modification of attribute metaclass - -When you declare an attribute with L, you get the inlined accessors -installed immediately. Modifying the attribute metaclass, even if possible, -does nothing. - -=head3 Lots more.. - -MouseX? +If you really must write a Mouse extension, please contact the Moose mailing +list or #moose on IRC beforehand. =head1 KEYWORDS @@ -299,9 +316,10 @@ Whether this attribute is required to have a value. If the attribute is lazy or has a builder, then providing a value for the attribute in the constructor is optional. -=item init_arg => Str +=item init_arg => Str | Undef -Allows you to use a different key name in the constructor. +Allows you to use a different key name in the constructor. If undef, the +attribue can't be passed to the constructor. =item default => Value | CodeRef @@ -359,6 +377,11 @@ context. In scalar context, the reference is returned (NOT the list length or bucket status). You must specify an appropriate type constraint to use auto_deref. +=item lazy_build => 0|1 + +Automatically define lazy => 1 as well as builder => "_build_$attr", clearer => +"clear_$attr', predicate => 'has_$attr' unless they are already defined. + =back =head2 confess error -> BOOM @@ -395,12 +418,18 @@ Returns whether this class is actually loaded or not. It uses a heuristic which involves checking for the existence of C<$VERSION>, C<@ISA>, and any locally-defined method. -=head1 AUTHOR +=head1 AUTHORS Shawn M Moore, C<< >> Yuval Kogman, C<< >> +tokuhirom + +Yappo + +wu-lee + with plenty of code borrowed from L and L =head1 BUGS