use Carp qw(confess);
-# it must be "require", because Mouse::Util depends on Mouse::Exporter
-require Mouse::Util;
-
my %SPEC;
-my $strict_bits = strict::bits(qw(subs refs vars));
+use constant _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()
+require Mouse::Util;
sub import{
- $^H |= $strict_bits; # strict->import;
+ $^H |= _strict_bits; # strict->import;
${^WARNING_BITS} = $warnings::Bits{all}; # warnings->import;
return;
}
+
sub setup_import_methods{
my($class, %args) = @_;
push @export_from, $current;
my $also = $SPEC{$current}{also} or next;
- push @stack, grep{ !$seen{$_}++ } @{ $also };
+ push @stack, grep{ !$seen{$_}++ } ref($also) ? @{ $also } : $also;
}
}
else{
*{$exporting_package . '::import'} = \&do_import;
*{$exporting_package . '::unimport'} = \&do_unimport;
+ # for backward compatibility
+
+ *{$exporting_package . '::export_to_level'} = sub{
+ my($package, $level, undef, @args) = @_; # the third argument is redundant
+ do_import($package, { into_level => $level + 1 }, @args);
+ };
+ *{$exporting_package . '::export'} = sub{
+ my($package, $into, @args) = @_;
+ do_import($package, { into => $into }, @args);
+ };
+
return;
}
my $into = _get_caller_package(ref($args[0]) ? shift @args : undef);
my @exports;
+
foreach my $arg(@args){
if($arg =~ s/^-//){
Mouse::Util::not_supported("-$arg");
}
}
- $^H |= $strict_bits; # strict->import;
+ $^H |= _strict_bits; # strict->import;
${^WARNING_BITS} = $warnings::Bits{all}; # warnings->import;
- if($into eq 'main' && !$spec->{_not_export_to_main}){
+ if($into eq 'main' && !$spec->{_export_to_main}){
warn qq{$package does not export its sugar to the 'main' package.\n};
return;
}
return;
}
+# 1 extra level because it's called by import so there's a layer\r
+# of indirection\r
+sub _LEVEL(){ 1 }
+
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
-
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(_LEVEL + $arg->{into_level})
+ : scalar caller(_LEVEL);
}
else{
- return scalar caller($offset);
+ return scalar caller(_LEVEL);
}
}
+#sub _spec{ %SPEC }
+
1;
__END__
=head1 NAME
-Mouse - The Mouse Exporter
+Mouse::Exporter - make an import() and unimport() just like Mouse.pm
=head1 SYNOPSIS
- package MouseX::Foo;
- use Mouse::Exporter;
-
- Mouse::Exporter->setup_import_methods(
-
- );
+ package MyApp::Mouse;\r
+\r
+ use Mouse ();\r
+ use Mouse::Exporter;\r
+\r
+ Mouse::Exporter->setup_import_methods(\r
+ as_is => [ 'has_rw', 'other_sugar', \&Some::Random::thing ],\r
+ also => 'Mouse',\r
+ );\r
+\r
+ sub has_rw {
+ my $meta = caller->meta;\r
+ my ( $name, %options ) = @_;\r
+ $meta->add_attribute(\r
+ $name,\r
+ is => 'rw',\r
+ %options,\r
+ );\r
+ }\r
+\r
+ # then later ...\r
+ package MyApp::User;\r
+
+ use MyApp::Mouse;\r
+\r
+ has 'name';\r
+ has_rw 'size';\r
+ thing;\r
+\r
+ no MyApp::Mouse;
=head1 DESCRIPTION
+This module encapsulates the exporting of sugar functions in a\r
+C<Mouse.pm>-like manner. It does this by building custom C<import>,\r
+C<unimport> methods for your module, based on a spec you provide.\r
+
+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 SEE ALSO
L<Moose::Exporter>
=cut
+