use Scalar::Util 'blessed', 'weaken', 'reftype';
use Carp 'confess';
+use Sub::Name 'subname';
use overload ();
-our $VERSION = '0.15';
+our $VERSION = '0.16';
our $AUTHORITY = 'cpan:STEVAN';
use Moose::Meta::Method::Accessor;
# new type is a subtype
if ($options{isa}) {
my $type_constraint;
- if (blessed($options{isa}) && $options{isa}->isa('Moose::Meta::TypeConstraint')) {
- $type_constraint = $options{isa};
- }
- else {
- $type_constraint = Moose::Util::TypeConstraints::find_or_create_type_constraint(
- $options{isa}
- );
- (defined $type_constraint)
- || confess "Could not find the type constraint '" . $options{isa} . "'";
- }
- # NOTE:
- # check here to see if the new type
- # is a subtype of the old one
- ($type_constraint->is_subtype_of($self->type_constraint->name))
- || confess "New type constraint setting must be a subtype of inherited one"
- # iff we have a type constraint that is ...
- if $self->has_type_constraint;
- # then we use it :)
- $actual_options{type_constraint} = $type_constraint;
+ if (blessed($options{isa}) && $options{isa}->isa('Moose::Meta::TypeConstraint')) {
+ $type_constraint = $options{isa};
+ }
+ else {
+ $type_constraint = Moose::Util::TypeConstraints::find_or_create_type_constraint(
+ $options{isa}
+ );
+ (defined $type_constraint)
+ || confess "Could not find the type constraint '" . $options{isa} . "'";
+ }
+ # NOTE:
+ # check here to see if the new type
+ # is a subtype of the old one
+ ($type_constraint->is_subtype_of($self->type_constraint->name))
+ || confess "New type constraint setting must be a subtype of inherited one"
+ # iff we have a type constraint that is ...
+ if $self->has_type_constraint;
+ # then we use it :)
+ $actual_options{type_constraint} = $type_constraint;
delete $options{isa};
}
(scalar keys %options == 0)
sub _process_options {
my ($class, $name, $options) = @_;
-
+
if (exists $options->{is}) {
- if ($options->{is} eq 'ro') {
- $options->{reader} ||= $name;
- (!exists $options->{trigger})
- || confess "Cannot have a trigger on a read-only attribute";
- }
- elsif ($options->{is} eq 'rw') {
- $options->{accessor} = $name;
- ((reftype($options->{trigger}) || '') eq 'CODE')
- || confess "Trigger must be a CODE ref"
- if exists $options->{trigger};
- }
- else {
- confess "I do not understand this option (is => " . $options->{is} . ")"
- }
+ if ($options->{is} eq 'ro') {
+ $options->{reader} ||= $name;
+ (!exists $options->{trigger})
+ || confess "Cannot have a trigger on a read-only attribute";
+ }
+ elsif ($options->{is} eq 'rw') {
+ $options->{accessor} = $name;
+ ((reftype($options->{trigger}) || '') eq 'CODE')
+ || confess "Trigger must be a CODE ref"
+ if exists $options->{trigger};
+ }
+ else {
+ confess "I do not understand this option (is => " . $options->{is} . ")"
+ }
}
-
+
if (exists $options->{isa}) {
-
if (exists $options->{does}) {
if (eval { $options->{isa}->can('does') }) {
($options->{isa}->does($options->{does}))
confess "Cannot have an isa option which cannot ->does()";
}
}
-
+
# allow for anon-subtypes here ...
if (blessed($options->{isa}) && $options->{isa}->isa('Moose::Meta::TypeConstraint')) {
- $options->{type_constraint} = $options->{isa};
- }
- else {
- $options->{type_constraint} = Moose::Util::TypeConstraints::find_or_create_type_constraint(
- $options->{isa} => {
+ $options->{type_constraint} = $options->{isa};
+ }
+ else {
+ $options->{type_constraint} = Moose::Util::TypeConstraints::find_or_create_type_constraint(
+ $options->{isa} => {
parent => Moose::Util::TypeConstraints::find_type_constraint('Object'),
constraint => sub { $_[0]->isa($options->{isa}) }
}
- );
- }
+ );
+ }
}
elsif (exists $options->{does}) {
# allow for anon-subtypes here ...
if (blessed($options->{does}) && $options->{does}->isa('Moose::Meta::TypeConstraint')) {
- $options->{type_constraint} = $options->{isa};
- }
- else {
- $options->{type_constraint} = Moose::Util::TypeConstraints::find_or_create_type_constraint(
- $options->{does} => {
+ $options->{type_constraint} = $options->{isa};
+ }
+ else {
+ $options->{type_constraint} = Moose::Util::TypeConstraints::find_or_create_type_constraint(
+ $options->{does} => {
parent => Moose::Util::TypeConstraints::find_type_constraint('Role'),
constraint => sub { $_[0]->does($options->{does}) }
}
- );
- }
+ );
+ }
}
-
+
if (exists $options->{coerce} && $options->{coerce}) {
(exists $options->{type_constraint})
|| confess "You cannot have coercion without specifying a type constraint";
- confess "You cannot have a weak reference to a coerced value"
- if $options->{weak_ref};
+ confess "You cannot have a weak reference to a coerced value"
+ if $options->{weak_ref};
}
-
+
if (exists $options->{auto_deref} && $options->{auto_deref}) {
(exists $options->{type_constraint})
|| confess "You cannot auto-dereference without specifying a type constraint";
($options->{type_constraint}->is_a_type_of('ArrayRef') ||
- $options->{type_constraint}->is_a_type_of('HashRef'))
+ $options->{type_constraint}->is_a_type_of('HashRef'))
|| confess "You cannot auto-dereference anything other than a ArrayRef or HashRef";
}
-
+
if (exists $options->{lazy_build} && $options->{lazy_build} == 1) {
confess("You can not use lazy_build and default for the same attribute")
- if exists $options->{default};
- $options->{lazy} = 1;
- $options->{required} = 1;
- $options->{builder} ||= "_build_${name}";
- if($name =~ /^_/){
+ if exists $options->{default};
+ $options->{lazy} = 1;
+ $options->{required} = 1;
+ $options->{builder} ||= "_build_${name}";
+ if ($name =~ /^_/) {
$options->{clearer} ||= "_clear${name}";
$options->{predicate} ||= "_has${name}";
- } else {
+ }
+ else {
$options->{clearer} ||= "clear_${name}";
$options->{predicate} ||= "has_${name}";
}
}
-
+
if (exists $options->{lazy} && $options->{lazy}) {
(exists $options->{default} || exists $options->{builder} )
|| confess "You cannot have lazy attribute without specifying a default value for it";
my $value_is_set;
if (exists $params->{$init_arg}) {
$val = $params->{$init_arg};
- $value_is_set = 1;
+ $value_is_set = 1;
}
else {
# skip it if it's lazy
if ($self->has_default) {
$val = $self->default($instance);
$value_is_set = 1;
- } elsif ($self->has_builder) {
- if(my $builder = $instance->can($self->builder)){
+ }
+ elsif ($self->has_builder) {
+ if (my $builder = $instance->can($self->builder)){
$val = $instance->$builder;
$value_is_set = 1;
- } else {
+ }
+ else {
confess(blessed($instance)." does not support builder method '".$self->builder."' for attribute '" . $self->name . "'");
}
}
$type_constraint->name .
") with '" .
(defined $val
- ? (blessed($val) && overload::Overloaded($val)
- ? overload::StrVal($val)
- : $val)
+ ? overload::StrVal($val)
: 'undef') .
"'";
}
$meta_instance->set_slot_value($instance, $self->name, $val);
$meta_instance->weaken_slot_value($instance, $self->name)
- if ref $val && $self->is_weak_ref;
+ if ref $val && $self->is_weak_ref;
}
## Slot management
. $type_constraint->name
. ") with "
. (defined($value)
- ? ("'" .
- (blessed($value) && overload::Overloaded($value)
- ? overload::StrVal($value)
- : $value)
- . "'")
+ ? ("'" . overload::StrVal($value) . "'")
: "undef")
if defined($value);
}
my ($self, $instance) = @_;
if ($self->is_lazy) {
- unless ($self->has_value($instance)) {
- if ($self->has_default) {
- my $default = $self->default($instance);
- $self->set_value($instance, $default);
- }
- if ( $self->has_builder ){
- if(my $builder = $instance->can($self->builder)){
- $self->set_value($instance, $instance->$builder);
- } else {
- confess(blessed($instance)." does not support builder method '".$self->builder."' for attribute '" . $self->name . "'");
- }
- } else {
- $self->set_value($instance, undef);
+ unless ($self->has_value($instance)) {
+ if ($self->has_default) {
+ my $default = $self->default($instance);
+ $self->set_value($instance, $default);
+ }
+ if ( $self->has_builder ){
+ if (my $builder = $instance->can($self->builder)){
+ $self->set_value($instance, $instance->$builder);
+ }
+ else {
+ confess(blessed($instance)
+ . " does not support builder method '"
+ . $self->builder
+ . "' for attribute '"
+ . $self->name
+ . "'");
}
+ }
+ else {
+ $self->set_value($instance, undef);
}
+ }
}
if ($self->should_auto_deref) {
my $associated_class = $self->associated_class;
foreach my $handle (keys %handles) {
my $method_to_call = $handles{$handle};
+ my $class_name = $associated_class->name;
+ my $name = "${class_name}::${handle}";
(!$associated_class->has_method($handle))
|| confess "You cannot overwrite a locally defined method ($handle) with a delegation";
# any of these methods, as they will
# override the ones in your class, which
# is almost certainly not what you want.
- next if $handle =~ /^BUILD|DEMOLISH$/ || Moose::Object->can($handle);
+
+ # FIXME warn when $handle was explicitly specified, but not if the source is a regex or something
+ #cluck("Not delegating method '$handle' because it is a core method") and
+ next if $class_name->isa("Moose::Object") and $handle =~ /^BUILD|DEMOLISH$/ || Moose::Object->can($handle);
if ((reftype($method_to_call) || '') eq 'CODE') {
- $associated_class->add_method($handle => $method_to_call);
+ $associated_class->add_method($handle => subname $name, $method_to_call);
}
else {
- $associated_class->add_method($handle => sub {
- # FIXME
- # we should check for lack of
- # a callable return value from
- # the accessor here
+ $associated_class->add_method($handle => subname $name, sub {
my $proxy = (shift)->$accessor();
@_ = ($proxy, @_);
- goto &{ $proxy->can($method_to_call) };
+ goto &{ $proxy->can($method_to_call) || return };
});
}
}
Any coercion to convert values is done before checking the type constraint.
To check a value against a type constraint before setting it, fetch the
-attribute instance using L<Moose::Meta::Attribute/find_attribute_by_name>,
+attribute instance using L<Class::MOP::Class/find_attribute_by_name>,
fetch the type_constraint from the attribute using L<Moose::Meta::Attribute/type_constraint>
and call L<Moose::Meta::TypeConstraint/check>. See L<Moose::Cookbook::RecipeX>
for an example.
=head1 COPYRIGHT AND LICENSE
-Copyright 2006, 2007 by Infinity Interactive, Inc.
+Copyright 2006-2008 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
projects / gitmo/Moose.git / blobdiff