X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse.pm;h=89b628991caf11c97a68269fe5167ea6c059f7cd;hb=927982b4ddf5c12d12e053f91d4186e841a32c4e;hp=32ee7ab673265dd1ff1f315a7a86f2ae19d6bbea;hpb=21498b08feb4f9e5f74670eafe293adcbf3cdd29;p=gitmo%2FMouse.git diff --git a/lib/Mouse.pm b/lib/Mouse.pm index 32ee7ab..89b6289 100644 --- a/lib/Mouse.pm +++ b/lib/Mouse.pm @@ -1,61 +1,27 @@ - package Mouse; use strict; use warnings; use 5.006; use base 'Exporter'; -our $VERSION; -our $PurePerl; - -BEGIN { - $VERSION = '0.12'; - - if ($ENV{MOUSE_DEBUG}) { - *DEBUG = sub (){ 1 }; - } else { - *DEBUG = sub (){ 0 }; - } - - if (! defined $PurePerl && $ENV{MOUSE_PUREPERL} && $ENV{MOUSE_PUREPERL} =~ /^(.+)$/) { - $PurePerl = $1; - } - - if (! $PurePerl) { - local $@; - local $^W = 0; - require XSLoader; - $PurePerl = ! eval{ XSLoader::load(__PACKAGE__, $VERSION); 1 }; - warn "Failed to load XS mode: $@" if $@; # && Mouse::DEBUG(); - } -} +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 { @@ -92,24 +58,72 @@ 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 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 }; if (@_) { - __PACKAGE__->export_to_level( 1, $class, @_); + __PACKAGE__->export_to_level( $level+1, $class, @_); } else { # shortcut for the common case of no type character no strict 'refs'; @@ -136,6 +150,7 @@ sub load_class { confess "Invalid class name ($display)"; } + return 1 if $class eq 'Mouse::Object'; return 1 if is_class_loaded($class); (my $file = "$class.pm") =~ s{::}{/}g; @@ -222,11 +237,9 @@ 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. -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 @@ -239,35 +252,15 @@ 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. +L is a more high-tech L. -Mouse also has the blessings of Moose's author, stevan. - -=head2 MISSING FEATURES +=head2 MouseX -=head3 Roles +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! -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 - -User-defined type constraints and parameterized types may be implemented. Type -coercions probably not (patches welcome). - -=head3 Bootstrapped meta world - -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 @@ -427,12 +420,16 @@ 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 + with plenty of code borrowed from L and L =head1 BUGS