use overload '""' => sub { shift->name }, # stringify to tc name
fallback => 1;
-use Sub::Name 'subname';
use Carp 'confess';
-use Scalar::Util 'blessed';
+use Scalar::Util qw(blessed refaddr);
-our $VERSION = '0.09';
+our $VERSION = '0.13';
our $AUTHORITY = 'cpan:STEVAN';
__PACKAGE__->meta->add_attribute('name' => (reader => 'name'));
predicate => 'has_parent',
));
__PACKAGE__->meta->add_attribute('constraint' => (
- reader => 'constraint',
- writer => '_set_constraint',
+ reader => 'constraint',
+ writer => '_set_constraint',
+ default => sub { sub { 1 } }
));
__PACKAGE__->meta->add_attribute('message' => (
accessor => 'message',
__PACKAGE__->meta->add_attribute('hand_optimized_type_constraint' => (
init_arg => 'optimized',
accessor => 'hand_optimized_type_constraint',
- predicate => 'has_hand_optimized_type_constraint',
+ predicate => 'has_hand_optimized_type_constraint',
));
+sub parents {
+ my $self;
+ $self->parent;
+}
+
# private accessors
__PACKAGE__->meta->add_attribute('compiled_type_constraint' => (
accessor => '_package_defined_in'
));
-sub new {
+sub new {
my $class = shift;
my $self = $class->meta->new_object(@_);
$self->compile_type_constraint()
}
sub coerce { ((shift)->coercion || confess "Cannot coerce without a type coercion")->coerce(@_) }
-sub check { $_[0]->_compiled_type_constraint->($_[1]) }
-sub validate {
+sub check { $_[0]->_compiled_type_constraint->($_[1]) ? 1 : undef }
+sub validate {
my ($self, $value) = @_;
if ($self->_compiled_type_constraint->($value)) {
return undef;
}
else {
- if ($self->has_message) {
- local $_ = $value;
- return $self->message->($value);
- }
- else {
- return "Validation failed for '" . $self->name . "' failed";
- }
+ $self->get_message($value);
}
}
+sub get_message {
+ my ($self, $value) = @_;
+ $value = (defined $value ? overload::StrVal($value) : 'undef');
+ if (my $msg = $self->message) {
+ local $_ = $value;
+ return $msg->($value);
+ }
+ else {
+ return "Validation failed for '" . $self->name . "' failed with value $value";
+ }
+}
+
## type predicates ...
+sub equals {
+ my ( $self, $type_or_name ) = @_;
+
+ my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
+
+ return 1 if refaddr($self) == refaddr($other);
+
+ if ( $self->has_hand_optimized_type_constraint and $other->has_hand_optimized_type_constraint ) {
+ return 1 if $self->hand_optimized_type_constraint == $other->hand_optimized_type_constraint;
+ }
+
+ return unless $self->constraint == $other->constraint;
+
+ if ( $self->has_parent ) {
+ return unless $other->has_parent;
+ return unless $self->parent->equals( $other->parent );
+ } else {
+ return if $other->has_parent;
+ }
+
+ return 1;
+}
+
sub is_a_type_of {
- my ($self, $type_name) = @_;
- ($self->name eq $type_name || $self->is_subtype_of($type_name));
+ my ($self, $type_or_name) = @_;
+
+ my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
+
+ ($self->equals($type) || $self->is_subtype_of($type));
}
sub is_subtype_of {
- my ($self, $type_name) = @_;
+ my ($self, $type_or_name) = @_;
+
+ my $type = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
+
my $current = $self;
+
while (my $parent = $current->parent) {
- return 1 if $parent->name eq $type_name;
+ return 1 if $parent->equals($type);
$current = $parent;
}
+
return 0;
}
sub _actually_compile_type_constraint {
my $self = shift;
-
+
return $self->_compile_hand_optimized_type_constraint
if $self->has_hand_optimized_type_constraint;
-
+
my $check = $self->constraint;
(defined $check)
- || confess "Could not compile type constraint '"
- . $self->name
+ || confess "Could not compile type constraint '"
+ . $self->name
. "' because no constraint check";
-
+
return $self->_compile_subtype($check)
if $self->has_parent;
-
+
return $self->_compile_type($check);
}
sub _compile_hand_optimized_type_constraint {
my $self = shift;
-
+
my $type_constraint = $self->hand_optimized_type_constraint;
-
- return sub {
- return undef unless $type_constraint->($_[0]);
- return 1;
- };
+
+ confess unless ref $type_constraint;
+
+ return $type_constraint;
}
sub _compile_subtype {
my ($self, $check) = @_;
-
+
# so we gather all the parents in order
# and grab their constraints ...
my @parents;
foreach my $parent ($self->_collect_all_parents) {
if ($parent->has_hand_optimized_type_constraint) {
unshift @parents => $parent->hand_optimized_type_constraint;
- last;
+ last;
}
else {
unshift @parents => $parent->constraint;
}
}
-
+
# then we compile them to run without
# having to recurse as we did before
- return subname $self->name => sub {
- local $_ = $_[0];
+ return Class::MOP::subname($self->name => sub {
+ local $_ = $_[0];
foreach my $parent (@parents) {
return undef unless $parent->($_[0]);
}
- return undef unless $check->($_[0]);
- 1;
- };
+ return undef unless $check->($_[0]);
+ 1;
+ });
}
sub _compile_type {
my ($self, $check) = @_;
- return subname $self->name => sub {
- local $_ = $_[0];
- return undef unless $check->($_[0]);
- 1;
- };
+ return Class::MOP::subname($self->name => sub {
+ local $_ = $_[0];
+ return undef unless $check->($_[0]);
+ 1;
+ });
}
## other utils ...
## this should get deprecated actually ...
-sub union { die "DEPRECATED" }
+sub union { Carp::croak "DEPRECATED" }
1;
=head1 DESCRIPTION
-For the most part, the only time you will ever encounter an
-instance of this class is if you are doing some serious deep
-introspection. This API should not be considered final, but
-it is B<highly unlikely> that this will matter to a regular
+For the most part, the only time you will ever encounter an
+instance of this class is if you are doing some serious deep
+introspection. This API should not be considered final, but
+it is B<highly unlikely> that this will matter to a regular
Moose user.
-If you wish to use features at this depth, please come to the
+If you wish to use features at this depth, please come to the
#moose IRC channel on irc.perl.org and we can talk :)
=head1 METHODS
=item B<new>
-=item B<is_a_type_of ($type_name)>
+=item B<equals ($type_name_or_object)>
+
+=item B<is_a_type_of ($type_name_or_object)>
-This checks the current type name, and if it does not match,
+This checks the current type name, and if it does not match,
checks if it is a subtype of it.
-=item B<is_subtype_of ($type_name)>
+=item B<is_subtype_of ($type_name_or_object)>
=item B<compile_type_constraint>
=item B<check ($value)>
-This method will return a true (C<1>) if the C<$value> passes the
+This method will return a true (C<1>) if the C<$value> passes the
constraint, and false (C<0>) otherwise.
=item B<validate ($value)>
-This method is similar to C<check>, but it deals with the error
-message. If the C<$value> passes the constraint, C<undef> will be
-returned. If the C<$value> does B<not> pass the constraint, then
-the C<message> will be used to construct a custom error message.
+This method is similar to C<check>, but it deals with the error
+message. If the C<$value> passes the constraint, C<undef> will be
+returned. If the C<$value> does B<not> pass the constraint, then
+the C<message> will be used to construct a custom error message.
=item B<name>
=item B<has_parent>
+=item B<parents>
+
=item B<constraint>
=item B<has_message>
=item B<message>
+=item B<get_message ($value)>
+
=item B<has_coercion>
=item B<coercion>
=head1 BUGS
-All complex software has bugs lurking in it, and this module is no
+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 COPYRIGHT AND LICENSE
-Copyright 2006, 2007 by Infinity Interactive, Inc.
+Copyright 2006-2008 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.
+it under the same terms as Perl itself.
=cut
projects / gitmo/Moose.git / blobdiff