X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMoose%2FExporter.pm;h=80f77a1ce08fa3e4285aeb17ed8749d3fb15d04d;hb=55d05fb16429c2150b5337b1a0130ae334e129d0;hp=26eaa11c870ae987353f4d8808ccd2cc5d08e003;hpb=addd05f659a6c3c2349fac6197a1e94ead0af36f;p=gitmo%2FMoose.git

diff --git a/lib/Moose/Exporter.pm b/lib/Moose/Exporter.pm
index 26eaa11..80f77a1 100644
--- a/lib/Moose/Exporter.pm
+++ b/lib/Moose/Exporter.pm
@@ -3,16 +3,22 @@ package Moose::Exporter;
 use strict;
 use warnings;
 
-our $VERSION   = '0.89_01';
+our $VERSION = '1.12';
+our $XS_VERSION = $VERSION;
 $VERSION = eval $VERSION;
 our $AUTHORITY = 'cpan:STEVAN';
 
 use Class::MOP;
 use List::MoreUtils qw( first_index uniq );
+use Moose::Deprecated;
 use Moose::Util::MetaRole;
 use Sub::Exporter 0.980;
 use Sub::Name qw(subname);
 
+use XSLoader;
+
+XSLoader::load( 'Moose', $XS_VERSION );
+
 my %EXPORT_SPEC;
 
 sub setup_import_methods {
@@ -33,13 +39,16 @@ sub build_import_methods {
 
     $EXPORT_SPEC{$exporting_package} = \%args;
 
-    my @exports_from = $class->_follow_also( $exporting_package );
+    my @exports_from = $class->_follow_also($exporting_package);
 
     my $export_recorder = {};
+    my $is_reexport     = {};
 
-    my ( $exports, $is_removable )
-        = $class->_make_sub_exporter_params(
-        [ @exports_from, $exporting_package ], $export_recorder );
+    my $exports = $class->_make_sub_exporter_params(
+        [ @exports_from, $exporting_package ],
+        $export_recorder,
+        $is_reexport,
+    );
 
     my $exporter = Sub::Exporter::build_exporter(
         {
@@ -49,17 +58,24 @@ sub build_import_methods {
     );
 
     my %methods;
-    # $args{_export_to_main} exists for backwards compat, because
-    # Moose::Util::TypeConstraints did export to main (unlike Moose &
-    # Moose::Role).
-    $methods{import} = $class->_make_import_sub( $exporting_package,
-        $exporter, \@exports_from, $args{_export_to_main} );
+    $methods{import} = $class->_make_import_sub(
+        $exporting_package,
+        $exporter,
+        \@exports_from,
+        $is_reexport
+    );
 
-    $methods{unimport} = $class->_make_unimport_sub( $exporting_package,
-        $exports, $is_removable, $export_recorder );
+    $methods{unimport} = $class->_make_unimport_sub(
+        $exporting_package,
+        $exports,
+        $export_recorder,
+        $is_reexport
+    );
 
-    $methods{init_meta} = $class->_make_init_meta( $exporting_package,
-        \%args );
+    $methods{init_meta} = $class->_make_init_meta(
+        $exporting_package,
+        \%args
+    );
 
     my $package = Class::MOP::Package->initialize($exporting_package);
     for my $to_install ( @{ $args{install} || [] } ) {
@@ -70,7 +86,7 @@ sub build_import_methods {
         $package->add_package_symbol( $symbol, $methods{$to_install} );
     }
 
-    return ( $methods{import}, $methods{unimport}, $methods{init_meta} )
+    return ( $methods{import}, $methods{unimport}, $methods{init_meta} );
 }
 
 {
@@ -88,12 +104,12 @@ sub build_import_methods {
     sub _follow_also_real {
         my $exporting_package = shift;
 
-        if (!exists $EXPORT_SPEC{$exporting_package}) {
+        if ( !exists $EXPORT_SPEC{$exporting_package} ) {
             my $loaded = Class::MOP::is_class_loaded($exporting_package);
 
             die "Package in also ($exporting_package) does not seem to "
-              . "use Moose::Exporter"
-              . ($loaded ? "" : " (is it loaded?)");
+                . "use Moose::Exporter"
+                . ( $loaded ? "" : " (is it loaded?)" );
         }
 
         my $also = $EXPORT_SPEC{$exporting_package}{also};
@@ -102,9 +118,9 @@ sub build_import_methods {
 
         my @also = ref $also ? @{$also} : $also;
 
-        for my $package (@also)
-        {
-            die "Circular reference in also parameter to Moose::Exporter between $exporting_package and $package"
+        for my $package (@also) {
+            die
+                "Circular reference in 'also' parameter to Moose::Exporter between $exporting_package and $package"
                 if $seen->{$package};
 
             $seen->{$package} = 1;
@@ -115,28 +131,20 @@ sub build_import_methods {
 }
 
 sub _make_sub_exporter_params {
-    my $class             = shift;
-    my $packages          = shift;
-    my $export_recorder   = shift;
+    my $class           = shift;
+    my $packages        = shift;
+    my $export_recorder = shift;
+    my $is_reexport  = shift;
 
     my %exports;
-    my %is_removable;
 
     for my $package ( @{$packages} ) {
         my $args = $EXPORT_SPEC{$package}
             or die "The $package package does not use Moose::Exporter\n";
 
         for my $name ( @{ $args->{with_meta} } ) {
-            my $sub = do {
-                no strict 'refs';
-                \&{ $package . '::' . $name };
-            };
-
-            if ( !defined(&$sub) ) {
-                Carp::cluck
-                    "Trying to export undefined sub ${package}::${name}";
-                next;
-            }
+            my $sub = $class->_sub_from_package( $package, $name )
+                or next;
 
             my $fq_name = $package . '::' . $name;
 
@@ -145,21 +153,11 @@ sub _make_sub_exporter_params {
                 $sub,
                 $export_recorder,
             );
-
-            $is_removable{$name} = 1;
         }
 
         for my $name ( @{ $args->{with_caller} } ) {
-            my $sub = do {
-                no strict 'refs';
-                \&{ $package . '::' . $name };
-            };
-
-            if ( !defined(&$sub) ) {
-                Carp::cluck
-                    "Trying to export undefined sub ${package}::${name}";
-                next;
-            }
+            my $sub = $class->_sub_from_package( $package, $name )
+                or next;
 
             my $fq_name = $package . '::' . $name;
 
@@ -168,45 +166,26 @@ sub _make_sub_exporter_params {
                 $sub,
                 $export_recorder,
             );
-
-            $is_removable{$name} = 1;
         }
 
         for my $name ( @{ $args->{as_is} } ) {
-            my ($sub, $coderef_name);
+            my ( $sub, $coderef_name );
 
             if ( ref $name ) {
-                $sub  = $name;
-
-                # Even though Moose re-exports things from Carp &
-                # Scalar::Util, we don't want to remove those at
-                # unimport time, because the importing package may
-                # have imported them explicitly ala
-                #
-                # use Carp qw( confess );
-                #
-                # This is a hack. Since we can't know whether they
-                # really want to keep these subs or not, we err on the
-                # safe side and leave them in.
+                $sub = $name;
+
                 my $coderef_pkg;
                 ( $coderef_pkg, $coderef_name )
                     = Class::MOP::get_code_info($name);
 
-                $is_removable{$coderef_name} = $coderef_pkg eq $package ? 1 : 0;
+                if ( $coderef_pkg ne $package ) {
+                    $is_reexport->{$coderef_name} = 1;
+                }
             }
             else {
-                $sub = do {
-                    no strict 'refs';
-                    \&{ $package . '::' . $name };
-                };
-
-                if ( !defined(&$sub) ) {
-                    Carp::cluck
-                        "Trying to export undefined sub ${package}::${name}";
-                    next;
-                }
+                $sub = $class->_sub_from_package( $package, $name )
+                    or next;
 
-                $is_removable{$name} = 1;
                 $coderef_name = $name;
             }
 
@@ -216,7 +195,24 @@ sub _make_sub_exporter_params {
         }
     }
 
-    return ( \%exports, \%is_removable );
+    return \%exports;
+}
+
+sub _sub_from_package {
+    my $sclass  = shift;
+    my $package = shift;
+    my $name    = shift;
+
+    my $sub = do {
+        no strict 'refs';
+        \&{ $package . '::' . $name };
+    };
+
+    return $sub if defined &$sub;
+
+    Carp::cluck "Trying to export undefined sub ${package}::${name}";
+
+    return;
 }
 
 our $CALLER;
@@ -236,9 +232,9 @@ sub _make_wrapped_sub {
     return sub {
         my $caller = $CALLER;
 
-        my $wrapper = $self->_curry_wrapper($sub, $fq_name, $caller);
+        my $wrapper = $self->_curry_wrapper( $sub, $fq_name, $caller );
 
-        my $sub = subname($fq_name => $wrapper);
+        my $sub = subname( $fq_name => $wrapper );
 
         $export_recorder->{$sub} = 1;
 
@@ -255,10 +251,12 @@ sub _make_wrapped_sub_with_meta {
     return sub {
         my $caller = $CALLER;
 
-        my $wrapper = $self->_late_curry_wrapper($sub, $fq_name,
-            sub { Class::MOP::class_of(shift) } => $caller);
+        my $wrapper = $self->_late_curry_wrapper(
+            $sub, $fq_name,
+            sub { Class::MOP::class_of(shift) } => $caller
+        );
 
-        my $sub = subname($fq_name => $wrapper);
+        my $sub = subname( $fq_name => $wrapper );
 
         $export_recorder->{$sub} = 1;
 
@@ -266,67 +264,18 @@ sub _make_wrapped_sub_with_meta {
     };
 }
 
-sub _make_wrapped_group {
-    my $class           = shift;
-    my $package         = shift; # package calling use Moose::Exporter
-    my $sub             = shift;
-    my $export_recorder = shift;
-    my $keywords        = shift;
-    my $is_removable    = shift;
-
-    return sub {
-        my $caller = $CALLER; # package calling use PackageUsingMooseExporter -group => {args}
-
-        # there are plenty of ways to deal with telling the code which
-        # package it lives in. the last arg (collector hashref) is
-        # otherwise unused, so we'll stick the original package in
-        # there and act like 'with_caller' by putting the calling
-        # package name as the first arg
-        $_[0] = $caller;
-        $_[3]{from} = $package;
-
-        my $named_code = $sub->(@_);
-        $named_code ||= { };
-
-        # send invalid return value error up to Sub::Exporter
-        unless (ref $named_code eq 'HASH') {
-            return $named_code;
-        }
-
-        for my $name (keys %$named_code) {
-            my $code = $named_code->{$name};
-
-            my $fq_name = $package . '::' . $name;
-            my $wrapper = $class->_curry_wrapper(
-                $code,
-                $fq_name,
-                $caller
-            );
-
-            my $sub = subname( $fq_name => $wrapper );
-            $named_code->{$name} = $sub;
-
-            # mark each coderef as ours
-            $keywords->{$name} = 1;
-            $is_removable->{$name} = 1;
-            $export_recorder->{$sub} = 1;
-        }
-
-        return $named_code;
-    };
-}
-
 sub _curry_wrapper {
     my $class   = shift;
     my $sub     = shift;
     my $fq_name = shift;
     my @extra   = @_;
 
-    my $wrapper = sub { $sub->(@extra, @_) };
-    if (my $proto = prototype $sub) {
+    my $wrapper = sub { $sub->( @extra, @_ ) };
+    if ( my $proto = prototype $sub ) {
+
         # XXX - Perl's prototype sucks. Use & to make set_prototype
         # ignore the fact that we're passing "private variables"
-        &Scalar::Util::set_prototype($wrapper, $proto);
+        &Scalar::Util::set_prototype( $wrapper, $proto );
     }
     return $wrapper;
 }
@@ -339,15 +288,17 @@ sub _late_curry_wrapper {
     my @ex_args = @_;
 
     my $wrapper = sub {
+
         # resolve curried arguments at runtime via this closure
-        my @curry = ( $extra->( @ex_args ) );
-        return $sub->(@curry, @_);
+        my @curry = ( $extra->(@ex_args) );
+        return $sub->( @curry, @_ );
     };
 
-    if (my $proto = prototype $sub) {
+    if ( my $proto = prototype $sub ) {
+
         # XXX - Perl's prototype sucks. Use & to make set_prototype
         # ignore the fact that we're passing "private variables"
-        &Scalar::Util::set_prototype($wrapper, $proto);
+        &Scalar::Util::set_prototype( $wrapper, $proto );
     }
     return $wrapper;
 }
@@ -357,7 +308,7 @@ sub _make_import_sub {
     my $exporting_package = shift;
     my $exporter          = shift;
     my $exports_from      = shift;
-    my $export_to_main    = shift;
+    my $is_reexport    = shift;
 
     return sub {
 
@@ -374,9 +325,9 @@ sub _make_import_sub {
 
         my $metaclass;
         ( $metaclass, @_ ) = _strip_metaclass(@_);
-        $metaclass = Moose::Util::resolve_metaclass_alias(
-            'Class' => $metaclass
-        ) if defined $metaclass && length $metaclass;
+        $metaclass
+            = Moose::Util::resolve_metaclass_alias( 'Class' => $metaclass )
+            if defined $metaclass && length $metaclass;
 
         # Normally we could look at $_[0], but in some weird cases
         # (involving goto &Moose::import), $_[0] ends as something
@@ -394,15 +345,9 @@ sub _make_import_sub {
         strict->import;
         warnings->import;
 
-        # we should never export to main
-        if ( $CALLER eq 'main' && !$export_to_main ) {
-            warn
-                qq{$class does not export its sugar to the 'main' package.\n};
-            return;
-        }
-
         my $did_init_meta;
         for my $c ( grep { $_->can('init_meta') } $class, @{$exports_from} ) {
+
             # init_meta can apply a role, which when loaded uses
             # Moose::Exporter, which in turn sets $CALLER, so we need
             # to protect against that.
@@ -412,6 +357,7 @@ sub _make_import_sub {
         }
 
         if ( $did_init_meta && @{$traits} ) {
+
             # The traits will use Moose::Role, which in turn uses
             # Moose::Exporter, which in turn sets $CALLER, so we need
             # to protect against that.
@@ -425,11 +371,25 @@ sub _make_import_sub {
             );
         }
 
-        goto $exporter;
+        my ( undef, @args ) = @_;
+        my $extra = shift @args if ref $args[0] eq 'HASH';
+
+        $extra ||= {};
+        if ( !$extra->{into} ) {
+            $extra->{into_level} ||= 0;
+            $extra->{into_level}++;
+        }
+
+        $class->$exporter( $extra, @args );
+
+        for my $name ( keys %{$is_reexport} ) {
+            no strict 'refs';
+            no warnings 'once';
+            _flag_as_reexport( \*{ join q{::}, $CALLER, $name } );
+        }
     };
 }
 
-
 sub _strip_traits {
     my $idx = first_index { $_ eq '-traits' } @_;
 
@@ -439,7 +399,7 @@ sub _strip_traits {
 
     splice @_, $idx, 2;
 
-    $traits = [ $traits ] unless ref $traits;
+    $traits = [$traits] unless ref $traits;
 
     return ( $traits, @_ );
 }
@@ -466,23 +426,30 @@ sub _apply_meta_traits {
     my $type = ( split /::/, ref $meta )[-1]
         or Moose->throw_error(
         'Cannot determine metaclass type for trait application . Meta isa '
-        . ref $meta );
+            . ref $meta );
 
-    my @resolved_traits
-        = map {
-            ref $_ ? $_ : Moose::Util::resolve_metatrait_alias( $type => $_ )
-        }
-        @$traits;
+    my @resolved_traits = map {
+        ref $_
+            ? $_
+            : Moose::Util::resolve_metatrait_alias( $type => $_ )
+    } @$traits;
 
     return unless @resolved_traits;
 
-    Moose::Util::MetaRole::apply_metaclass_roles(
-        for_class       => $class,
-        metaclass_roles => \@resolved_traits,
-    );
+    my %args = ( for => $class );
+
+    if ( $meta->isa('Moose::Meta::Role') ) {
+        $args{role_metaroles} = { role => \@resolved_traits };
+    }
+    else {
+        $args{class_metaroles} = { class => \@resolved_traits };
+    }
+
+    Moose::Util::MetaRole::apply_metaroles(%args);
 }
 
 sub _get_caller {
+
     # 1 extra level because it's called by import so there's a layer
     # of indirection
     my $offset = 1;
@@ -498,16 +465,16 @@ sub _make_unimport_sub {
     shift;
     my $exporting_package = shift;
     my $exports           = shift;
-    my $is_removable      = shift;
     my $export_recorder   = shift;
+    my $is_reexport    = shift;
 
     return sub {
         my $caller = scalar caller();
         Moose::Exporter->_remove_keywords(
             $caller,
             [ keys %{$exports} ],
-            $is_removable,
             $export_recorder,
+            $is_reexport,
         );
     };
 }
@@ -516,20 +483,25 @@ sub _remove_keywords {
     shift;
     my $package          = shift;
     my $keywords         = shift;
-    my $is_removable     = shift;
     my $recorded_exports = shift;
+    my $is_reexport   = shift;
 
     no strict 'refs';
 
-    foreach my $name ( @{ $keywords } ) {
-        next unless $is_removable->{$name};
-
+    foreach my $name ( @{$keywords} ) {
         if ( defined &{ $package . '::' . $name } ) {
             my $sub = \&{ $package . '::' . $name };
 
             # make sure it is from us
             next unless $recorded_exports->{$sub};
 
+            if ( $is_reexport->{$name} ) {
+                no strict 'refs';
+                next
+                    unless _export_is_flagged(
+                            \*{ join q{::} => $package, $name } );
+            }
+
             # and if it is from us, then undef the slot
             delete ${ $package . '::' }{$name};
         }
@@ -541,10 +513,11 @@ sub _make_init_meta {
     my $class = shift;
     my $args  = shift;
 
-    my %metaclass_roles;
+    my %old_style_roles;
     for my $role (
         map {"${_}_roles"}
-        qw(metaclass
+        qw(
+        metaclass
         attribute_metaclass
         method_metaclass
         wrapped_method_metaclass
@@ -552,18 +525,20 @@ sub _make_init_meta {
         constructor_class
         destructor_class
         error_class
-        application_to_class_class
-        application_to_role_class
-        application_to_instance_class)
+        )
         ) {
-        $metaclass_roles{$role} = $args->{$role} if exists $args->{$role};
+        $old_style_roles{$role} = $args->{$role}
+            if exists $args->{$role};
     }
 
     my %base_class_roles;
     %base_class_roles = ( roles => $args->{base_class_roles} )
         if exists $args->{base_class_roles};
 
-    return unless %metaclass_roles || %base_class_roles;
+    my %new_style_roles = map { $_ => $args->{$_} }
+        grep { exists $args->{$_} } qw( class_metaroles role_metaroles );
+
+    return unless %new_style_roles || %old_style_roles || %base_class_roles;
 
     return sub {
         shift;
@@ -571,10 +546,13 @@ sub _make_init_meta {
 
         return unless Class::MOP::class_of( $options{for_class} );
 
-        Moose::Util::MetaRole::apply_metaclass_roles(
-            for_class => $options{for_class},
-            %metaclass_roles,
-        );
+        if ( %new_style_roles || %old_style_roles ) {
+            Moose::Util::MetaRole::apply_metaroles(
+                for => $options{for_class},
+                %new_style_roles,
+                %old_style_roles,
+            );
+        }
 
         Moose::Util::MetaRole::apply_base_class_roles(
             for_class => $options{for_class},
@@ -664,11 +642,13 @@ will export the functions you specify, and can also re-export functions
 exported by some other module (like C<Moose.pm>).
 
 The C<unimport> method cleans the caller's namespace of all the exported
-functions.
+functions. This includes any functions you re-export from other
+packages. However, if the consumer of your package also imports those
+functions from the original package, they will I<not> be cleaned.
 
 If you pass any parameters for L<Moose::Util::MetaRole>, this method will
 generate an C<init_meta> for you as well (see below for details). This
-C<init_meta> will call C<Moose::Util::MetaRole::apply_metaclass_roles> and
+C<init_meta> will call C<Moose::Util::MetaRole::apply_metaroles> and
 C<Moose::Util::MetaRole::apply_base_class_roles> as needed.
 
 Note that if any of these methods already exist, they will not be
@@ -712,9 +692,9 @@ when C<unimport> is called.
 
 =back
 
-Any of the C<*_roles> options for
-C<Moose::Util::MetaRole::apply_metaclass_roles> and
-C<Moose::Util::MetaRole::base_class_roles> are also acceptable.
+You can also provide parameters for C<Moose::Util::MetaRole::apply_metaroles>
+and C<Moose::Util::MetaRole::base_class_roles>. Specifically, valid parameters
+are "class_metaroles", "role_metaroles", and "base_class_roles".
 
 =item B<< Moose::Exporter->build_import_methods(...) >>
 
@@ -794,6 +774,10 @@ These traits will be applied to the caller's metaclass
 instance. Providing traits for an exporting class that does not create
 a metaclass for the caller is an error.
 
+=head1 BUGS
+
+See L<Moose/BUGS> for details on reporting bugs.
+
 =head1 AUTHOR
 
 Dave Rolsky E<lt>autarch@urth.orgE<gt>