our $VERSION = '0.09';
our $AUTHORITY = 'cpan:STEVAN';
-use Moose::Meta::TypeConstraint::Union;
-use Moose::Meta::TypeConstraint::Container;
-
-__PACKAGE__->meta->add_attribute('name' => (reader => 'name' ));
-__PACKAGE__->meta->add_attribute('parent' => (reader => 'parent' ));
+__PACKAGE__->meta->add_attribute('name' => (reader => 'name'));
+__PACKAGE__->meta->add_attribute('parent' => (
+ reader => 'parent',
+ predicate => 'has_parent',
+));
__PACKAGE__->meta->add_attribute('constraint' => (
reader => 'constraint',
writer => '_set_constraint',
accessor => 'coercion',
predicate => 'has_coercion'
));
-
-# private accessor
-__PACKAGE__->meta->add_attribute('compiled_type_constraint' => (
- accessor => '_compiled_type_constraint'
-));
-
__PACKAGE__->meta->add_attribute('hand_optimized_type_constraint' => (
init_arg => 'optimized',
accessor => 'hand_optimized_type_constraint',
predicate => 'has_hand_optimized_type_constraint',
));
+# private accessors
+
+__PACKAGE__->meta->add_attribute('compiled_type_constraint' => (
+ accessor => '_compiled_type_constraint',
+ predicate => '_has_compiled_type_constraint'
+));
__PACKAGE__->meta->add_attribute('package_defined_in' => (
accessor => '_package_defined_in'
));
sub new {
my $class = shift;
my $self = $class->meta->new_object(@_);
- $self->compile_type_constraint();
+ $self->compile_type_constraint()
+ unless $self->_has_compiled_type_constraint;
return $self;
}
-sub coerce {
- ((shift)->coercion || confess "Cannot coerce without a type coercion")->coerce(@_)
-}
-
-sub _collect_all_parents {
- my $self = shift;
- my @parents;
- my $current = $self->parent;
- while (defined $current) {
- push @parents => $current;
- $current = $current->parent;
- }
- return @parents;
-}
-
-sub compile_type_constraint {
- my $self = shift;
-
- if ($self->has_hand_optimized_type_constraint) {
- my $type_constraint = $self->hand_optimized_type_constraint;
- $self->_compiled_type_constraint(sub {
- return undef unless $type_constraint->($_[0]);
- return 1;
- });
- return;
- }
-
- my $check = $self->constraint;
- (defined $check)
- || confess "Could not compile type constraint '" . $self->name . "' because no constraint check";
- my $parent = $self->parent;
- if (defined $parent) {
- # we have a subtype ...
- # 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;
- }
- else {
- unshift @parents => $parent->constraint;
- }
- }
-
- # then we compile them to run without
- # having to recurse as we did before
- $self->_compiled_type_constraint(subname $self->name => sub {
- local $_ = $_[0];
- foreach my $parent (@parents) {
- return undef unless $parent->($_[0]);
- }
- return undef unless $check->($_[0]);
- 1;
- });
- }
- else {
- # we have a type ....
- $self->_compiled_type_constraint(subname $self->name => sub {
- local $_ = $_[0];
- return undef unless $check->($_[0]);
- 1;
- });
- }
-}
-
-sub check { $_[0]->_compiled_type_constraint->($_[1]) }
-
+sub coerce { ((shift)->coercion || confess "Cannot coerce without a type coercion")->coerce(@_) }
+sub check { $_[0]->_compiled_type_constraint->($_[1]) }
sub validate {
my ($self, $value) = @_;
if ($self->_compiled_type_constraint->($value)) {
}
}
+## type predicates ...
+
sub is_a_type_of {
my ($self, $type_name) = @_;
($self->name eq $type_name || $self->is_subtype_of($type_name));
return 0;
}
-sub union {
- my ($class, @type_constraints) = @_;
- (scalar @type_constraints >= 2)
- || confess "You must pass in at least 2 Moose::Meta::TypeConstraint instances to make a union";
- (blessed($_) && $_->isa('Moose::Meta::TypeConstraint'))
- || confess "You must pass in only Moose::Meta::TypeConstraint instances to make unions"
- foreach @type_constraints;
- return Moose::Meta::TypeConstraint::Union->new(
- type_constraints => \@type_constraints,
- );
+## compiling the type constraint
+
+sub compile_type_constraint {
+ my $self = shift;
+ $self->_compiled_type_constraint($self->_actually_compile_type_constraint);
}
+## type compilers ...
+
+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
+ . "' 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;
+ };
+}
+
+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;
+ }
+ 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];
+ foreach my $parent (@parents) {
+ return undef unless $parent->($_[0]);
+ }
+ 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;
+ };
+}
+
+## other utils ...
+
+sub _collect_all_parents {
+ my $self = shift;
+ my @parents;
+ my $current = $self->parent;
+ while (defined $current) {
+ push @parents => $current;
+ $current = $current->parent;
+ }
+ return @parents;
+}
+
+## this should get deprecated actually ...
+
+sub union { die "DEPRECATED" }
+
1;
__END__
=item B<parent>
+=item B<has_parent>
+
=item B<constraint>
=item B<has_message>
=back
+=head2 DEPRECATED METHOD
+
=over 4
-=item B<union (@type_constraints)>
+=item B<union>
+
+This was just bad idea on my part,.. use the L<Moose::Meta::TypeConstraint::Union>
+itself instead.
=back
projects / gitmo/Moose.git / blobdiff