my %SPEC;
-my $strict_bits = strict::bits(qw(subs refs vars));
+my $strict_bits;
+BEGIN{ $strict_bits = strict::bits(qw(subs refs vars)); }
# it must be "require", because Mouse::Util depends on Mouse::Exporter,
# which depends on Mouse::Util::import()
sub import{
$^H |= $strict_bits; # strict->import;
- ${^WARNING_BITS} = $warnings::Bits{all}; # warnings->import;
+ ${^WARNING_BITS} |= $warnings::Bits{all}; # warnings->import;
return;
}
my $exporting_package = $args{exporting_package} ||= caller();
+ my($import, $unimport) = $class->build_import_methods(%args);
+
+ Mouse::Util::install_subroutines($exporting_package,
+ import => $import,
+ unimport => $unimport,
+
+ export_to_level => sub {
+ my($package, $level, undef, @args) = @_; # the third argument is redundant
+ $package->import({ into_level => $level + 1 }, @args);
+ },
+ export => sub {
+ my($package, $into, @args) = @_;
+ $package->import({ into => $into }, @args);
+ },
+ );
+ return;
+}
+
+sub build_import_methods{
+ my($class, %args) = @_;
+
+ my $exporting_package = $args{exporting_package} ||= caller();
+
$SPEC{$exporting_package} = \%args;
# canonicalize args
@export_from = ($exporting_package);
}
- {
- my %exports;
- my @removables;
- my @all;
-
- my @init_meta_methods;
-
- foreach my $package(@export_from){
- my $spec = $SPEC{$package} or next;
-
- if(my $as_is = $spec->{as_is}){
- foreach my $thingy (@{$as_is}){
- my($code_package, $code_name, $code);
-
- if(ref($thingy)){
- $code = $thingy;
- ($code_package, $code_name) = Mouse::Util::get_code_info($code);
- }
- else{
- no strict 'refs';
- $code_package = $package;
- $code_name = $thingy;
- $code = \&{ $code_package . '::' . $code_name };
- }
-
- push @all, $code_name;
- $exports{$code_name} = $code;
- if($code_package eq $package){
- push @removables, $code_name;
- }
- }
- }
+ my %exports;
+ my @removables;
+ my @all;
+
+ my @init_meta_methods;
- if(my $init_meta = $package->can('init_meta')){
- if(!grep{ $_ == $init_meta } @init_meta_methods){
- unshift @init_meta_methods, $init_meta;
+ foreach my $package(@export_from){
+ my $spec = $SPEC{$package} or next;
+
+ if(my $as_is = $spec->{as_is}){
+ foreach my $thingy (@{$as_is}){
+ my($code_package, $code_name, $code);
+
+ if(ref($thingy)){
+ $code = $thingy;
+ ($code_package, $code_name) = Mouse::Util::get_code_info($code);
+ }
+ else{
+ $code_package = $package;
+ $code_name = $thingy;
+ no strict 'refs';
+ $code = \&{ $code_package . '::' . $code_name };
+ }
+
+ push @all, $code_name;
+ $exports{$code_name} = $code;
+ if($code_package eq $package){
+ push @removables, $code_name;
}
}
}
- $args{EXPORTS} = \%exports;
- $args{REMOVABLES} = \@removables;
-
- $args{groups}{all} ||= \@all;
- if(my $default_list = $args{groups}{default}){
- my %default;
- foreach my $keyword(@{$default_list}){
- $default{$keyword} = $exports{$keyword}
- || confess(qq{The $exporting_package package does not export "$keyword"});
+ if(my $init_meta = $package->can('init_meta')){
+ if(!grep{ $_ == $init_meta } @init_meta_methods){
+ push @init_meta_methods, $init_meta;
}
- $args{DEFAULT} = \%default;
- }
- else{
- $args{groups}{default} ||= \@all;
- $args{DEFAULT} = $args{EXPORTS};
}
+ }
+ $args{EXPORTS} = \%exports;
+ $args{REMOVABLES} = \@removables;
- if(@init_meta_methods){
- $args{INIT_META} = \@init_meta_methods;
+ $args{groups}{all} ||= \@all;
+
+ if(my $default_list = $args{groups}{default}){
+ my %default;
+ foreach my $keyword(@{$default_list}){
+ $default{$keyword} = $exports{$keyword}
+ || confess(qq{The $exporting_package package does not export "$keyword"});
}
+ $args{DEFAULT} = \%default;
+ }
+ else{
+ $args{groups}{default} ||= \@all;
+ $args{DEFAULT} = $args{EXPORTS};
}
- no strict 'refs';
-
- *{$exporting_package . '::import'} = \&do_import;
- *{$exporting_package . '::unimport'} = \&do_unimport;
+ if(@init_meta_methods){
+ $args{INIT_META} = \@init_meta_methods;
+ }
- return;
+ return (\&do_import, \&do_unimport);
}
my $into = _get_caller_package(ref($args[0]) ? shift @args : undef);
my @exports;
- foreach my $arg(@args){
+ my @traits;
+
+ while(@args){
+ my $arg = shift @args;
if($arg =~ s/^-//){
- Mouse::Util::not_supported("-$arg");
+ if($arg eq 'traits'){
+ push @traits, ref($args[0]) ? @{shift(@args)} : shift(@args);
+ }
+ else {
+ Mouse::Util::not_supported("-$arg");
+ }
}
elsif($arg =~ s/^://){
my $group = $spec->{groups}{$arg}
}
$^H |= $strict_bits; # strict->import;
- ${^WARNING_BITS} = $warnings::Bits{all}; # warnings->import;
-
- if($into eq 'main' && !$spec->{_export_to_main}){
- warn qq{$package does not export its sugar to the 'main' package.\n};
- return;
- }
+ ${^WARNING_BITS} |= $warnings::Bits{all}; # warnings->import;
if($spec->{INIT_META}){
+ my $meta;
foreach my $init_meta(@{$spec->{INIT_META}}){
- $into->$init_meta(for_class => $into);
+ $meta = $package->$init_meta(for_class => $into);
}
- # _apply_meta_traits($into); # TODO
+ if(@traits){
+ my $type = (split /::/, ref $meta)[-1]; # e.g. "Class" for "My::Meta::Class"
+ @traits =
+ map{
+ ref($_) ? $_
+ : Mouse::Util::resolve_metaclass_alias($type => $_, trait => 1)
+ } @traits;
+
+ require Mouse::Util::MetaRole;
+ Mouse::Util::MetaRole::apply_metaroles(
+ for => $into,
+ Mouse::Util::is_a_metarole($into->meta)
+ ? (role_metaroles => { role => \@traits })
+ : (class_metaroles => { class => \@traits }),
+ );
+ }
+ }
+ elsif(@traits){
+ Carp::confess("Cannot provide traits when $package does not have an init_meta() method");
}
if(@exports){
+ my @export_table;
foreach my $keyword(@exports){
- no strict 'refs';
- *{$into.'::'.$keyword} = $spec->{EXPORTS}{$keyword}
- || confess(qq{The $package package does not export "$keyword"});
+ push @export_table,
+ $keyword => ($spec->{EXPORTS}{$keyword}
+ || confess(qq{The $package package does not export "$keyword"})
+ );
}
+ Mouse::Util::install_subroutines($into, @export_table);
}
else{
- my $default = $spec->{DEFAULT};
- while(my($keyword, $code) = each %{$default}){
- no strict 'refs';
- *{$into.'::'.$keyword} = $code;
- }
+ Mouse::Util::install_subroutines($into, %{$spec->{DEFAULT}});
}
return;
}
};
for my $keyword (@{ $spec->{REMOVABLES} }) {
+ next if !exists $stash->{$keyword};
my $gv = \$stash->{$keyword};
if(ref($gv) eq 'GLOB' && *{$gv}{CODE} == $spec->{EXPORTS}{$keyword}){ # make sure it is from us
delete $stash->{$keyword};
sub _get_caller_package {
my($arg) = @_;
- # 2 extra level because it's called by import so there's a layer\r
- # of indirection\r
- my $offset = 1;\r
-
+ # We need one extra level because it's called by import so there's a layer
+ # of indirection
if(ref $arg){
return defined($arg->{into}) ? $arg->{into}
- : defined($arg->{into_level}) ? scalar caller($offset + $arg->{into_level})
- : scalar caller($offset);
+ : defined($arg->{into_level}) ? scalar caller(1 + $arg->{into_level})
+ : scalar caller(1);
}
else{
- return scalar caller($offset);
+ return scalar caller(1);
}
}
-1;
+#sub _spec{ %SPEC }
+1;
__END__
=head1 NAME
-Mouse - The Mouse Exporter
+Mouse::Exporter - make an import() and unimport() just like Mouse.pm
+
+=head1 VERSION
+
+This document describes Mouse version 0.50_03
=head1 SYNOPSIS
- package MouseX::Foo;
+ package MyApp::Mouse;
+
+ use Mouse ();
use Mouse::Exporter;
Mouse::Exporter->setup_import_methods(
-
+ as_is => [ 'has_rw', 'other_sugar', \&Some::Random::thing ],
+ also => 'Mouse',
);
+ sub has_rw {
+ my $meta = caller->meta;
+ my ( $name, %options ) = @_;
+ $meta->add_attribute(
+ $name,
+ is => 'rw',
+ %options,
+ );
+ }
+
+ # then later ...
+ package MyApp::User;
+
+ use MyApp::Mouse;
+
+ has 'name';
+ has_rw 'size';
+ thing;
+
+ no MyApp::Mouse;
+
=head1 DESCRIPTION
+This module encapsulates the exporting of sugar functions in a
+C<Mouse.pm>-like manner. It does this by building custom C<import>,
+C<unimport> methods for your module, based on a spec you provide.
+
+Note that C<Mouse::Exporter> does not provide the C<with_meta> option,
+but you can easily get the metaclass by C<< caller->meta >> as L</SYNOPSIS> shows.
+
+=head1 METHODS
+
+=head2 C<< setup_import_methods( ARGS ) >>
+
+=head2 C<< build_import_methods( ARGS ) -> (\&import, \&unimport) >>
=head1 SEE ALSO
L<Moose::Exporter>
=cut
+
projects / gitmo/Mouse.git / blobdiff