Add built local::lib

[catagits/Gitalist.git] / local-lib5 / lib / perl5 / Moose / Meta / TypeConstraint / Enum.pm

diff --git a/local-lib5/lib/perl5/Moose/Meta/TypeConstraint/Enum.pm b/local-lib5/lib/perl5/Moose/Meta/TypeConstraint/Enum.pm
new file mode 100644 (file)
index 0000000..926a55d
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+++ b/local-lib5/lib/perl5/Moose/Meta/TypeConstraint/Enum.pm
@@ -0,0 +1,148 @@
+package Moose::Meta::TypeConstraint::Enum;
+
+use strict;
+use warnings;
+use metaclass;
+
+use Moose::Util::TypeConstraints ();
+
+our $VERSION   = '0.93';
+$VERSION = eval $VERSION;
+our $AUTHORITY = 'cpan:STEVAN';
+
+use base 'Moose::Meta::TypeConstraint';
+
+__PACKAGE__->meta->add_attribute('values' => (
+    accessor => 'values',
+));
+
+sub new {
+    my ( $class, %args ) = @_;
+
+    $args{parent} = Moose::Util::TypeConstraints::find_type_constraint('Str');
+
+    my $self = $class->_new(\%args);
+
+    $self->compile_type_constraint()
+        unless $self->_has_compiled_type_constraint;
+
+    return $self;
+}
+
+sub equals {
+    my ( $self, $type_or_name ) = @_;
+
+    my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
+
+    return unless $other->isa(__PACKAGE__);
+
+    my @self_values  = sort @{ $self->values };
+    my @other_values = sort @{ $other->values };
+
+    return unless @self_values == @other_values;
+
+    while ( @self_values ) {
+        my $value = shift @self_values;
+        my $other_value = shift @other_values;
+
+        return unless $value eq $other_value;
+    }
+
+    return 1;
+}
+
+sub constraint {
+    my $self = shift;
+
+    my %values = map { $_ => undef } @{ $self->values };
+
+    return sub { exists $values{$_[0]} };
+}
+
+sub _compile_hand_optimized_type_constraint {
+    my $self  = shift;
+
+    my %values = map { $_ => undef } @{ $self->values };
+
+    sub { defined($_[0]) && !ref($_[0]) && exists $values{$_[0]} };
+}
+
+sub create_child_type {
+    my ($self, @args) = @_;
+    return Moose::Meta::TypeConstraint->new(@args, parent => $self);
+}
+
+1;
+
+__END__
+
+=pod
+
+=head1 NAME
+
+Moose::Meta::TypeConstraint::Enum - Type constraint for enumerated values.
+
+=head1 DESCRIPTION
+
+This class represents type constraints based on an enumerated list of
+acceptable values.
+
+=head1 INHERITANCE
+
+C<Moose::Meta::TypeConstraint::Enum> is a subclass of
+L<Moose::Meta::TypeConstraint>.
+
+=head1 METHODS
+
+=over 4
+
+=item B<< Moose::Meta::TypeConstraint::Enum->new(%options) >>
+
+This creates a new enum type constraint based on the given
+C<%options>.
+
+It takes the same options as its parent, with several
+exceptions. First, it requires an additional option, C<values>. This
+should be an array reference containing a list of valid string
+values. Second, it automatically sets the parent to the C<Str> type.
+
+Finally, it ignores any provided C<constraint> option. The constraint
+is generated automatically based on the provided C<values>.
+
+=item B<< $constraint->values >>
+
+Returns the array reference of acceptable values provided to the
+constructor.
+
+=item B<< $constraint->create_child_type >>
+
+This returns a new L<Moose::Meta::TypeConstraint> object with the type
+as its parent.
+
+Note that it does I<not> return a C<Moose::Meta::TypeConstraint::Enum>
+object!
+
+=back
+
+=head1 BUGS
+
+All complex software has bugs lurking in it, and this module is no
+exception. If you find a bug please either email me, or add the bug
+to cpan-RT.
+
+=head1 AUTHOR
+
+Yuval Kogman E<lt>nothingmuch@cpan.orgE<gt>
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright 2006-2009 by Infinity Interactive, Inc.
+
+L<http://www.iinteractive.com>
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself.
+
+=cut
+
+