package Mouse::PurePerl;
-
-require Mouse::Util;
-
+# The pure Perl backend for Mouse
package Mouse::Util;
-
use strict;
use warnings;
+use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl twice
-use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl
-
+use Scalar::Util ();
use B ();
+require Mouse::Util;
# taken from Class/MOP.pm
sub is_valid_class_name {
package Mouse::Util::TypeConstraints;
-use Scalar::Util qw(blessed looks_like_number openhandle);
sub Any { 1 }
sub Item { 1 }
-sub Bool { $_[0] ? $_[0] eq '1' : 1 }
+sub Bool { !$_[0] || $_[0] eq '1' }
sub Undef { !defined($_[0]) }
sub Defined { defined($_[0]) }
sub Value { defined($_[0]) && !ref($_[0]) }
-sub Num { looks_like_number($_[0]) }
-sub Int {
- my($value) = @_;
- looks_like_number($value) && $value =~ /\A [+-]? [0-9]+ \z/xms;
-}
+sub Num { Scalar::Util::looks_like_number($_[0]) }
sub Str {
+ # We need to use a copy here to flatten MAGICs, for instance as in
+ # Str( substr($_, 0, 42) ).
my($value) = @_;
return defined($value) && ref(\$value) eq 'SCALAR';
}
+sub Int {
+ # We need to use a copy here to save the original internal SV flags.
+ my($value) = @_;
+ return defined($value) && $value =~ /\A -? [0-9]+ \z/xms;
+}
sub Ref { ref($_[0]) }
sub ScalarRef {
my($value) = @_;
- return ref($value) eq 'SCALAR'
+ return ref($value) eq 'SCALAR' || ref($value) eq 'REF';
}
sub ArrayRef { ref($_[0]) eq 'ARRAY' }
sub HashRef { ref($_[0]) eq 'HASH' }
sub GlobRef { ref($_[0]) eq 'GLOB' }
sub FileHandle {
- return openhandle($_[0]) || (blessed($_[0]) && $_[0]->isa("IO::Handle"))
+ my($value) = @_;
+ return Scalar::Util::openhandle($value)
+ || (Scalar::Util::blessed($value) && $value->isa("IO::Handle"))
}
-sub Object { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }
+sub Object { Scalar::Util::blessed($_[0]) && ref($_[0]) ne 'Regexp' }
sub ClassName { Mouse::Util::is_class_loaded($_[0]) }
sub RoleName { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') }
return;
}
+my $generate_class_accessor = sub {
+ my($name) = @_;
+ return sub {
+ my $self = shift;
+ if(@_) {
+ return $self->{$name} = shift;
+ }
+
+ foreach my $class($self->linearized_isa) {
+ my $meta = Mouse::Util::get_metaclass_by_name($class)
+ or next;
+
+ if(exists $meta->{$name}) {
+ return $meta->{$name};
+ }
+ }
+ return undef;
+ };
+};
+
+
package Mouse::Meta::Class;
use Mouse::Meta::Method::Constructor;
sub roles { $_[0]->{roles} }
-sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } }
-
-sub get_all_attributes {
- my($self) = @_;
- my %attrs = map { %{ $self->initialize($_)->{attributes} } } reverse $self->linearized_isa;
- return values %attrs;
-}
+sub linearized_isa { @{ Mouse::Util::get_linear_isa($_[0]->{package}) } }
sub new_object {
my $meta = shift;
my $object = bless {}, $meta->name;
- $meta->_initialize_object($object, \%args);
+ $meta->_initialize_object($object, \%args, 0);
# BUILDALL
if( $object->can('BUILD') ) {
for my $class (reverse $meta->linearized_isa) {
my $object = shift;
my $args = $object->Mouse::Object::BUILDARGS(@_);
- (blessed($object) && $object->isa($class->name))
+ (Scalar::Util::blessed($object) && $object->isa($class->name))
|| $class->throw_error("You must pass an instance of the metaclass (" . $class->name . "), not ($object)");
my $cloned = bless { %$object }, ref $object;
$class->_initialize_object($cloned, $args, 1);
-
return $cloned;
}
sub _initialize_object{
my($self, $object, $args, $is_cloning) = @_;
+ # The initializer, which is used everywhere, must be clear
+ # when an attribute is added. See Mouse::Meta::Class::add_attribute.
+ my $initializer = $self->{_mouse_cache}{_initialize_object} ||=
+ Mouse::Util::load_class($self->constructor_class)
+ ->_generate_initialize_object($self);
+ goto &{$initializer};
+}
+
+sub get_all_attributes {
+ my($self) = @_;
+ return @{ $self->{_mouse_cache}{all_attributes}
+ ||= $self->_calculate_all_attributes };
+}
- my @triggers_queue;
+sub is_immutable { $_[0]->{is_immutable} }
- foreach my $attribute ($self->get_all_attributes) {
- my $init_arg = $attribute->init_arg;
- my $slot = $attribute->name;
+sub strict_constructor;
+*strict_constructor = $generate_class_accessor->('strict_constructor');
- if (defined($init_arg) && exists($args->{$init_arg})) {
- $object->{$slot} = $attribute->_coerce_and_verify($args->{$init_arg}, $object);
+sub _invalidate_metaclass_cache {
+ my($self) = @_;
+ delete $self->{_mouse_cache};
+ return;
+}
- weaken($object->{$slot})
- if ref($object->{$slot}) && $attribute->is_weak_ref;
+sub _report_unknown_args {
+ my($metaclass, $attrs, $args) = @_;
- if ($attribute->has_trigger) {
- push @triggers_queue, [ $attribute->trigger, $object->{$slot} ];
- }
- }
- else { # no init arg
- if ($attribute->has_default || $attribute->has_builder) {
- if (!$attribute->is_lazy && !exists $object->{$slot}) {
- my $default = $attribute->default;
- my $builder = $attribute->builder;
- my $value = $builder ? $object->$builder()
- : ref($default) eq 'CODE' ? $object->$default()
- : $default;
-
- $object->{$slot} = $attribute->_coerce_and_verify($value, $object);
-
- weaken($object->{$slot})
- if ref($object->{$slot}) && $attribute->is_weak_ref;
- }
- }
- elsif(!$is_cloning && $attribute->is_required) {
- $self->throw_error("Attribute (".$attribute->name.") is required");
- }
+ my @unknowns;
+ my %init_args;
+ foreach my $attr(@{$attrs}){
+ my $init_arg = $attr->init_arg;
+ if(defined $init_arg){
+ $init_args{$init_arg}++;
}
}
- if(@triggers_queue){
- foreach my $trigger_and_value(@triggers_queue){
- my($trigger, $value) = @{$trigger_and_value};
- $trigger->($object, $value);
+ while(my $key = each %{$args}){
+ if(!exists $init_args{$key}){
+ push @unknowns, $key;
}
}
- if($self->is_anon_class){
- $object->{__METACLASS__} = $self;
- }
-
- return;
+ $metaclass->throw_error( sprintf
+ "Unknown attribute passed to the constructor of %s: %s",
+ $metaclass->name, Mouse::Util::english_list(@unknowns),
+ );
}
-sub is_immutable { $_[0]->{is_immutable} }
-
-sub __strict_constructor{ $_[0]->{strict_constructor} }
-
package Mouse::Meta::Role;
sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' }
return @{ $self->{after_method_modifiers}{$method_name} ||= [] }
}
+sub add_metaclass_accessor { # for meta roles (a.k.a. traits)
+ my($meta, $name) = @_;
+ $meta->add_method($name => $generate_class_accessor->($name));
+ return;
+}
+
package Mouse::Meta::Attribute;
require Mouse::Meta::Method::Accessor;
sub should_coerce { $_[0]->{coerce} }
sub documentation { $_[0]->{documentation} }
+sub insertion_order { $_[0]->{insertion_order} }
# predicates
if(defined $tc){ # both isa and does supplied
my $does_ok = do{
local $@;
- eval{ "$tc"->does($args) };
+ eval{ "$tc"->does($args->{does}) };
};
if(!$does_ok){
$class->throw_error("Cannot have both an isa option and a does option because '$tc' does not do '$args->{does}' on attribute ($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");
+ || $class->throw_error("You cannot have a lazy attribute ($name) without specifying a default value for it");
}
return;
package Mouse::Meta::TypeConstraint;
+use overload
+ '""' => '_as_string',
+ '0+' => '_identity',
+ '|' => '_unite',
+
+ fallback => 1;
+
sub name { $_[0]->{name} }
sub parent { $_[0]->{parent} }
sub message { $_[0]->{message} }
+sub _identity { Scalar::Util::refaddr($_[0]) } # overload 0+
+
sub type_parameter { $_[0]->{type_parameter} }
sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} }
-sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} }
sub __is_parameterized { exists $_[0]->{type_parameter} }
sub has_coercion { exists $_[0]->{_compiled_type_coercion} }
sub new {
my $class = shift;
-
- $class->meta->throw_error('Cannot call new() on an instance') if ref $class;
-
- my $args = $class->BUILDARGS(@_);
-
- my $meta = Mouse::Meta::Class->initialize($class);
- return $meta->new_object($args);
+ my $args = $class->BUILDARGS(@_);
+ return $class->meta->new_object($args);
}
sub DESTROY {
return unless $self->can('DEMOLISH'); # short circuit
- local $?;
-
my $e = do{
+ local $?;
local $@;
eval{
# DEMOLISHALL
=head1 VERSION
-This document describes Mouse version 0.60
+This document describes Mouse version 0.95
=head1 SEE ALSO
projects / gitmo/Mouse.git / blobdiff