use Mouse::Meta::TypeConstraint;
-sub _process_options{
- my($class, $name, $args) = @_;
+my %valid_options = map { $_ => undef } (
+ 'accessor',
+ 'auto_deref',
+ 'builder',
+ 'clearer',
+ 'coerce',
+ 'default',
+ 'documentation',
+ 'does',
+ 'handles',
+ 'init_arg',
+ 'is',
+ 'isa',
+ 'lazy',
+ 'lazy_build',
+ 'name',
+ 'predicate',
+ 'reader',
+ 'required',
+ 'traits',
+ 'trigger',
+ 'type_constraint',
+ 'weak_ref',
+ 'writer',
+
+ # internally used
+ 'associated_class',
+ 'associated_methods',
+
+ # Moose defines, but Mouse doesn't
+ #'definition_context',
+ #'initializer',
+ #'insertion_order',
+
+ # special case for AttributeHelpers
+ 'provides',
+ 'curries',
+);
+
+our @CARP_NOT = qw(Mouse::Meta::Class);
+
+sub new {
+ my $class = shift;
+ my $name = shift;
+
+ my $args = $class->Mouse::Object::BUILDARGS(@_);
# XXX: for backward compatibility (with method modifiers)
if($class->can('canonicalize_args') != \&canonicalize_args){
%{$args} = $class->canonicalize_args($name, %{$args});
}
- # taken from Class::MOP::Attribute::new
-
- defined($name)
- or $class->throw_error('You must provide a name for the attribute');
-
- if(!exists $args->{init_arg}){
- $args->{init_arg} = $name;
- }
+ $class->_process_options($name, $args);
- # 'required' requires eigher 'init_arg', 'builder', or 'default'
- my $can_be_required = defined( $args->{init_arg} );
+ $args->{name} = $name;
- if(exists $args->{builder}){
- # XXX:
- # Moose refuses a CODE ref builder, but Mouse doesn't for backward compatibility
- # This feature will be changed in a future. (gfx)
- $class->throw_error('builder must be a defined scalar value which is a method name')
- #if ref $args->{builder} || !defined $args->{builder};
- if !defined $args->{builder};
+ # check options
+ # (1) known by core
+ my @bad = grep{ !exists $valid_options{$_} } keys %{$args};
- $can_be_required++;
- }
- elsif(exists $args->{default}){
- if(ref $args->{default} && ref($args->{default}) ne 'CODE'){
- $class->throw_error("References are not allowed as default values, you must "
- . "wrap the default of '$name' in a CODE reference (ex: sub { [] } and not [])");
- }
- $can_be_required++;
- }
-
- if( $args->{required} && !$can_be_required ) {
- $class->throw_error("You cannot have a required attribute ($name) without a default, builder, or an init_arg");
+ # (2) known by subclasses
+ if(@bad && $class ne __PACKAGE__){
+ my %valid_attrs = (
+ map { $_ => undef }
+ grep { defined }
+ map { $_->init_arg() }
+ $class->meta->get_all_attributes()
+ );
+ @bad = grep{ !exists $valid_attrs{$_} } @bad;
}
- # taken from Mouse::Meta::Attribute->new and _process_args->
-
- if(exists $args->{is}){
- my $is = $args->{is};
-
- if($is eq 'ro'){
- $args->{reader} ||= $name;
- }
- elsif($is eq 'rw'){
- if(exists $args->{writer}){
- $args->{reader} ||= $name;
- }
- else{
- $args->{accessor} ||= $name;
- }
- }
- elsif($is eq 'bare'){
- # do nothing, but don't complain (later) about missing methods
- }
- else{
- $is = 'undef' if !defined $is;
- $class->throw_error("I do not understand this option (is => $is) on attribute ($name)");
- }
- }
-
- my $tc;
- if(exists $args->{isa}){
- $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_isa_type_constraint($args->{isa});
- }
- elsif(exists $args->{does}){
- $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_does_type_constraint($args->{does});
- }
- $tc = $args->{type_constraint};
-
- if($args->{coerce}){
- defined($tc)
- || $class->throw_error("You cannot have coercion without specifying a type constraint on attribute ($name)");
-
- $args->{weak_ref}
- && $class->throw_error("You cannot have a weak reference to a coerced value on attribute ($name)");
- }
-
- if ($args->{lazy_build}) {
- exists($args->{default})
- && $class->throw_error("You can not use lazy_build and default for the same attribute ($name)");
-
- $args->{lazy} = 1;
- $args->{builder} ||= "_build_${name}";
- if ($name =~ /^_/) {
- $args->{clearer} ||= "_clear${name}";
- $args->{predicate} ||= "_has${name}";
- }
- else {
- $args->{clearer} ||= "clear_${name}";
- $args->{predicate} ||= "has_${name}";
- }
+ # (3) bad options found
+ if(@bad){
+ Carp::carp(
+ "Found unknown argument(s) passed to '$name' attribute constructor in '$class': "
+ . Mouse::Util::english_list(@bad));
}
- if ($args->{auto_deref}) {
- defined($tc)
- || $class->throw_error("You cannot auto-dereference without specifying a type constraint on attribute ($name)");
-
- ( $tc->is_a_type_of('ArrayRef') || $tc->is_a_type_of('HashRef') )
- || $class->throw_error("You cannot auto-dereference anything other than a ArrayRef or HashRef on attribute ($name)");
- }
-
- if (exists $args->{trigger}) {
- ('CODE' eq ref $args->{trigger})
- || $class->throw_error("Trigger must be a CODE ref on attribute ($name)");
- }
-
- if ($args->{lazy}) {
- (exists $args->{default} || defined $args->{builder})
- || $class->throw_error("You cannot have lazy attribute ($name) without specifying a default value for it");
- }
-
- return;
-}
-
-sub new {
- my $class = shift;
- my $name = shift;
-
- my %args = (@_ == 1) ? %{ $_[0] } : @_;
-
- $class->_process_options($name, \%args);
-
- $args{name} = $name;
-
- my $self = bless \%args, $class;
+ my $self = bless $args, $class;
# extra attributes
if($class ne __PACKAGE__){
- $class->meta->_initialize_object($self, \%args);
+ $class->meta->_initialize_object($self, $args);
}
-# XXX: there is no fast way to check attribute validity
-# my @bad = ...;
-# if(@bad){
-# @bad = sort @bad;
-# Carp::cluck("Found unknown argument(s) passed to '$name' attribute constructor in '$class': @bad");
-# }
-
return $self;
}
my ($self, $name, %args) = @_;
Carp::cluck("$self->canonicalize_args has been deprecated."
- . "Use \$self->_process_options instead.")
- if Mouse::Util::_MOUSE_VERBOSE;
+ . "Use \$self->_process_options instead.");
return %args;
}
my ($self, $class, $name, %args) = @_;
Carp::cluck("$self->create has been deprecated."
- . "Use \$meta->add_attribute and \$attr->install_accessors instead.")
- if Mouse::Util::_MOUSE_VERBOSE;
+ . "Use \$meta->add_attribute and \$attr->install_accessors instead.");
# noop
return $self;
return 1 if !$type_constraint;
return 1 if $type_constraint->check($value);
- $self->verify_type_constraint_error($self->name, $value, $type_constraint);
+ $self->_throw_type_constraint_error($value, $type_constraint);
}
-sub verify_type_constraint_error {
- my($self, $name, $value, $type) = @_;
- $self->throw_error("Attribute ($name) does not pass the type constraint because: "
- . $type->get_message($value));
-}
-
-sub coerce_constraint { # DEPRECATED
- my $type = $_[0]->{type_constraint}
- or return $_[1];
-
- Carp::cluck("coerce_constraint() has been deprecated, which was an internal utility anyway");
+sub _throw_type_constraint_error {
+ my($self, $value, $type) = @_;
- return Mouse::Util::TypeConstraints->typecast_constraints($_[0]->associated_class->name, $type, $_[1]);
+ $self->throw_error(
+ sprintf q{Attribute (%s) does not pass the type constraint because: %s},
+ $self->name,
+ $type->get_message($value),
+ );
}
sub clone_and_inherit_options{
- my($self, %args) = @_;
+ my $self = shift;
+ my $args = $self->Mouse::Object::BUILDARGS(@_);
- my($attribute_class, @traits) = ref($self)->interpolate_class(\%args);
+ my($attribute_class, @traits) = ref($self)->interpolate_class($args);
- $args{traits} = \@traits if @traits;
+ $args->{traits} = \@traits if @traits;
# do not inherit the 'handles' attribute
foreach my $name(keys %{$self}){
- if(!exists $args{$name} && $name ne 'handles'){
- $args{$name} = $self->{$name};
+ if(!exists $args->{$name} && $name ne 'handles'){
+ $args->{$name} = $self->{$name};
+ }
+ }
+
+ # remove temporary caches
+ foreach my $attr(keys %{$args}){
+ if($attr =~ /\A _/xms){
+ delete $args->{$attr};
}
}
- return $attribute_class->new($self->name, %args);
+
+ return $attribute_class->new($self->name, $args);
}
sub clone_parent { # DEPRECATED
my %args = ($self->get_parent_args($class, $name), @_);
Carp::cluck("$self->clone_parent has been deprecated."
- . "Use \$meta->add_attribute and \$attr->install_accessors instead.")
- if Mouse::Util::_MOUSE_VERBOSE;
+ . "Use \$meta->add_attribute and \$attr->install_accessors instead.");
$self->clone_and_inherited_args($class, $name, %args);
}
elsif (ref($handles) eq 'ARRAY') {
return map { $_ => $_ } @$handles;
}
+ elsif ( ref($handles) eq 'CODE' ) {
+ my $class_or_role = ( $self->{isa} || $self->{does} )
+ || $self->throw_error( "Cannot find delegate metaclass for attribute " . $self->name );
+ return $handles->( $self, Mouse::Meta::Class->initialize("$class_or_role"));
+ }
elsif (ref($handles) eq 'Regexp') {
my $class_or_role = ($self->{isa} || $self->{does})
|| $self->throw_error("Cannot delegate methods based on a Regexp without a type constraint (isa)");
sub _make_delegation_method {
my($self, $handle, $method_to_call) = @_;
- my $delegator = $self->delegation_metaclass;
- Mouse::Util::load_class($delegator);
-
- return $delegator->_generate_delegation($self, $handle, $method_to_call);
+ return Mouse::Util::load_class($self->delegation_metaclass)
+ ->_generate_delegation($self, $handle, $method_to_call);
}
sub throw_error{
=head1 VERSION
-This document describes Mouse version 0.44
+This document describes Mouse version 0.50_03
=head1 METHODS
projects / gitmo/Mouse.git / blobdiff