use strict;
use warnings;
+
use Carp::Clan qw( ^MooseX::Types );
use Moose::Util::TypeConstraints ();
use Moose::Meta::TypeConstraint::Union;
use overload(
'""' => sub {
- return shift->__type_constraint->name;
+ my $self = shift @_;
+ if(blessed $self) {
+ return $self->__type_constraint->name;
+ } else {
+ return "$self";
+ }
},
'|' => sub {
## It's kind of ugly that we need to know about Union Types, but this
## is needed for syntax compatibility. Maybe someday we'll all just do
## Or[Str,Str,Int]
-
- my @tc = grep {blessed $_} @_;
+
+ my @args = @_[0,1]; ## arg 3 is special, see the overload docs.
+ my @tc = grep {blessed $_} map {
+ blessed $_ ? $_ :
+ Moose::Util::TypeConstraints::find_or_parse_type_constraint($_)
+ || __PACKAGE__->_throw_error( "$_ is not a type constraint")
+ } @args;
+
+ ( scalar @tc == scalar @args)
+ || __PACKAGE__->_throw_error(
+ "one of your type constraints is bad. Passed: ". join(', ', @args) ." Got: ". join(', ', @tc));
+
+ ( scalar @tc >= 2 )
+ || __PACKAGE__->_throw_error("You must pass in at least 2 type names to make a union");
+
my $union = Moose::Meta::TypeConstraint::Union->new(type_constraints=>\@tc);
return Moose::Util::TypeConstraints::register_type_constraint($union);
},
+ fallback => 1,
+
);
-
=head1 NAME
MooseX::Types::TypeDecorator - More flexible access to a Type Constraint
if(my $arg = shift @_) {
if(blessed $arg && $arg->isa('Moose::Meta::TypeConstraint')) {
return bless {'__type_constraint'=>$arg}, $class;
- } elsif(blessed $arg && $arg->isa('MooseX::Types::UndefinedType')) {
+ } elsif(
+ blessed $arg &&
+ $arg->isa('MooseX::Types::UndefinedType')
+ ) {
## stub in case we'll need to handle these types differently
return bless {'__type_constraint'=>$arg}, $class;
} elsif(blessed $arg) {
- croak "Argument must be ->isa('Moose::Meta::TypeConstraint') or ->isa('MooseX::Types::UndefinedType'), not ". blessed $arg;
+ __PACKAGE__->_throw_error("Argument must be ->isa('Moose::Meta::TypeConstraint') or ->isa('MooseX::Types::UndefinedType'), not ". blessed $arg);
} else {
- croak "Argument cannot be '$arg'";
+ __PACKAGE__->_throw_error("Argument cannot be '$arg'");
}
} else {
- croak "This method [new] requires a single argument of 'arg'.";
+ __PACKAGE__->_throw_error("This method [new] requires a single argument.");
}
}
-=head __type_constraint ($type_constraint)
+=head2 __type_constraint ($type_constraint)
Set/Get the type_constraint.
=cut
sub __type_constraint {
- my $self = shift @_;
-
+ my $self = shift @_;
if(blessed $self) {
if(defined(my $tc = shift @_)) {
$self->{__type_constraint} = $tc;
}
return $self->{__type_constraint};
} else {
- croak 'cannot call __type_constraint as a class method';
+ __PACKAGE__->_throw_error('cannot call __type_constraint as a class method');
}
}
sub isa {
my ($self, $target) = @_;
if(defined $target) {
- return $self->__type_constraint->isa($target);
+ if(blessed $self) {
+ return $self->__type_constraint->isa($target);
+ } else {
+ return;
+ }
} else {
return;
}
}
+
=head2 can
handle $self->can since AUTOLOAD can't.
sub can {
my ($self, $target) = @_;
if(defined $target) {
- return $self->__type_constraint->can($target);
+ if(blessed $self) {
+ return $self->__type_constraint->can($target);
+ } else {
+ return;
+ }
} else {
return;
}
}
+=head2 meta
+
+have meta examine the underlying type constraints
+
+=cut
+
+sub meta {
+ my $self = shift @_;
+ if(blessed $self) {
+ return $self->__type_constraint->meta;
+ }
+}
+
+=head2 _throw_error
+
+properly delegate error messages
+
+=cut
+
+sub _throw_error {
+ shift;
+ require Moose;
+ unshift @_, 'Moose';
+ goto &Moose::throw_error;
+}
+
=head2 DESTROY
We might need it later
=cut
sub AUTOLOAD {
+
my ($self, @args) = @_;
my ($method) = (our $AUTOLOAD =~ /([^:]+)$/);
- if($self->__type_constraint->can($method)) {
- return $self->__type_constraint->$method(@args);
+
+ ## We delegate with this method in an attempt to support a value of
+ ## __type_constraint which is also AUTOLOADing, in particular the class
+ ## MooseX::Types::UndefinedType which AUTOLOADs during autovivication.
+
+ my $return;
+
+ eval {
+ $return = $self->__type_constraint->$method(@args);
+ }; if($@) {
+ __PACKAGE__->_throw_error($@);
} else {
- croak "Method '$method' is not supported";
+ return $return;
}
}
-=head1 AUTHOR AND COPYRIGHT
+=head1 AUTHOR
-John Napiorkowski (jnapiorkowski) <jjnapiork@cpan.org>
+See L<MooseX::Types/AUTHOR>.
=head1 LICENSE