X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FPurePerl.pm;h=88c5b5bc66f8ee8cafee24381a320a1af47af444;hp=d1b2c27f6f9dbea6dbb882aeda89a9d25c5dceda;hb=HEAD;hpb=ca980dc4f492df68e6536c0c83a2d520adc43066 diff --git a/lib/Mouse/PurePerl.pm b/lib/Mouse/PurePerl.pm index d1b2c27..88c5b5b 100644 --- a/lib/Mouse/PurePerl.pm +++ b/lib/Mouse/PurePerl.pm @@ -1,16 +1,14 @@ 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 { @@ -136,29 +134,31 @@ sub generate_can_predicate_for { 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' } @@ -167,10 +167,12 @@ sub RegexpRef { ref($_[0]) eq 'Regexp' } sub GlobRef { ref($_[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') } @@ -244,6 +246,27 @@ sub add_method { 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; @@ -261,82 +284,91 @@ sub is_anon_class{ 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 $self = shift; + my $meta = shift; my %args = (@_ == 1 ? %{$_[0]} : @_); - my $object = bless {}, $self->name; + my $object = bless {}, $meta->name; - $self->_initialize_object($object, \%args); + $meta->_initialize_object($object, \%args, 0); + # BUILDALL + if( $object->can('BUILD') ) { + for my $class (reverse $meta->linearized_isa) { + my $build = Mouse::Util::get_code_ref($class, 'BUILD') + || next; + + $object->$build(\%args); + } + } return $object; } +sub clone_object { + my $class = shift; + my $object = shift; + my $args = $object->Mouse::Object::BUILDARGS(@_); + + (Scalar::Util::blessed($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}; +} - my @triggers_queue; +sub get_all_attributes { + my($self) = @_; + return @{ $self->{_mouse_cache}{all_attributes} + ||= $self->_calculate_all_attributes }; +} - foreach my $attribute ($self->get_all_attributes) { - my $init_arg = $attribute->init_arg; - my $slot = $attribute->name; +sub is_immutable { $_[0]->{is_immutable} } - if (defined($init_arg) && exists($args->{$init_arg})) { - $object->{$slot} = $attribute->_coerce_and_verify($args->{$init_arg}, $object); +sub strict_constructor; +*strict_constructor = $generate_class_accessor->('strict_constructor'); - weaken($object->{$slot}) - if ref($object->{$slot}) && $attribute->is_weak_ref; +sub _invalidate_metaclass_cache { + my($self) = @_; + delete $self->{_mouse_cache}; + return; +} - if ($attribute->has_trigger) { - push @triggers_queue, [ $attribute->trigger, $object->{$slot} ]; - } - } - elsif(!$is_cloning) { # no init arg, noop while cloning - if ($attribute->has_default || $attribute->has_builder) { - if (!$attribute->is_lazy) { - 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}) && $attribute->is_weak_ref; - } - } - elsif($attribute->is_required) { - $self->throw_error("Attribute (".$attribute->name.") is required"); - } - } - } +sub _report_unknown_args { + my($metaclass, $attrs, $args) = @_; - if(@triggers_queue){ - foreach my $trigger_and_value(@triggers_queue){ - my($trigger, $value) = @{$trigger_and_value}; - $trigger->($object, $value); + my @unknowns; + my %init_args; + foreach my $attr(@{$attrs}){ + my $init_arg = $attr->init_arg; + if(defined $init_arg){ + $init_args{$init_arg}++; } } - if($self->is_anon_class){ - $object->{__METACLASS__} = $self; + while(my $key = each %{$args}){ + if(!exists $init_args{$key}){ + push @unknowns, $key; + } } - 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' } @@ -379,6 +411,12 @@ sub get_after_method_modifiers { 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; @@ -412,6 +450,7 @@ sub should_auto_deref { $_[0]->{auto_deref} } sub should_coerce { $_[0]->{coerce} } sub documentation { $_[0]->{documentation} } +sub insertion_order { $_[0]->{insertion_order} } # predicates @@ -500,7 +539,7 @@ sub _process_options{ 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)"); @@ -550,7 +589,7 @@ sub _process_options{ 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; @@ -559,13 +598,21 @@ sub _process_options{ 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} } @@ -641,25 +688,8 @@ sub BUILDARGS { 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); - my $self = $meta->new_object($args); - - # BUILDALL - if( $self->can('BUILD') ) { - for my $class (reverse $meta->linearized_isa) { - my $build = Mouse::Util::get_code_ref($class, 'BUILD') - || next; - - $self->$build($args); - } - } - - return $self; + my $args = $class->BUILDARGS(@_); + return $class->meta->new_object($args); } sub DESTROY { @@ -667,9 +697,8 @@ sub DESTROY { return unless $self->can('DEMOLISH'); # short circuit - local $?; - my $e = do{ + local $?; local $@; eval{ # DEMOLISHALL @@ -720,7 +749,7 @@ Mouse::PurePerl - A Mouse guts in pure Perl =head1 VERSION -This document describes Mouse version 0.55 +This document describes Mouse version 0.95 =head1 SEE ALSO