use strict;
use warnings;
-use Carp 'confess';
use Scalar::Util 'blessed', 'weaken', 'looks_like_number';
-our $VERSION = '0.02';
+our $VERSION = '0.65';
our $AUTHORITY = 'cpan:STEVAN';
-use base 'Moose::Meta::Method';
+use base 'Moose::Meta::Method',
+ 'Class::MOP::Method::Generated';
sub new {
my $class = shift;
my %options = @_;
- (exists $options{options} && ref $options{options} eq 'HASH')
- || confess "You must pass a hash of options";
+ my $meta = $options{metaclass};
+
+ (ref $options{options} eq 'HASH')
+ || $class->throw_error("You must pass a hash of options", data => $options{options});
+
+ ($options{package_name} && $options{name})
+ || $class->throw_error("You must supply the package_name and name parameters $Class::MOP::Method::UPGRADE_ERROR_TEXT");
my $self = bless {
# from our superclass
- '&!body' => undef,
+ 'body' => undef,
+ 'package_name' => $options{package_name},
+ 'name' => $options{name},
# specific to this subclass
- '%!options' => $options{options},
- '$!meta_instance' => $options{metaclass}->get_meta_instance,
- '@!attributes' => [ $options{metaclass}->compute_all_applicable_attributes ],
+ 'options' => $options{options},
+ 'meta_instance' => $meta->get_meta_instance,
+ 'attributes' => [ $meta->compute_all_applicable_attributes ],
# ...
- '$!associated_metaclass' => $options{metaclass},
+ 'associated_metaclass' => $meta,
} => $class;
# we don't want this creating
# a cycle in the code, if not
# needed
- weaken($self->{'$!associated_metaclass'});
+ weaken($self->{'associated_metaclass'});
- $self->intialize_body;
+ $self->initialize_body;
return $self;
}
+sub can_be_inlined {
+ my $self = shift;
+ my $metaclass = $self->associated_metaclass;
+
+ my $expected_class = $self->_expected_constructor_class;
+
+ # If any of our parents have been made immutable, we are okay to
+ # inline our own new method. The assumption is that an inlined new
+ # method provided by a parent does not actually get used by
+ # children anyway.
+ for my $meta (
+ grep { $_->is_immutable }
+ map { ( ref $metaclass )->initialize($_) }
+ grep { $_ ne $expected_class }
+ $metaclass->linearized_isa
+ ) {
+ my $transformer = $meta->get_immutable_transformer;
+
+ # This is actually a false positive if we're in a subclass of
+ # this class, _and_ the expected class is not overridden (but
+ # should be), and the real expected class is actually
+ # immutable itself (see Fey::Object::Table for an example of
+ # how this can happen). I'm not sure how to actually handle
+ # that case, since it's effectively a bug in the subclass (for
+ # not overriding _expected_constructor_class).
+ return 1 if $transformer->inlined_constructor;
+ }
+
+ if ( my $constructor = $metaclass->find_method_by_name( $self->name ) ) {
+ my $class = $self->associated_metaclass->name;
+
+ if ( $constructor->body != $expected_class->can('new') ) {
+ my $warning
+ = "Not inlining a constructor for $class since it is not"
+ . " inheriting the default $expected_class constructor\n";
+
+ $warning .= " (constructor has method modifiers which would be lost if it were inlined)\n"
+ if $constructor->isa('Class::MOP::Method::Wrapped');
+
+ warn $warning;
+
+ return 0;
+ }
+ else {
+ return 1;
+ }
+ }
+
+ # This would be a rather weird case where we have no constructor
+ # in the inheritance chain.
+ return 1;
+}
+
+# This is here so can_be_inlined can be inherited by MooseX modules.
+sub _expected_constructor_class {
+ return 'Moose::Object';
+}
+
## accessors
-sub options { (shift)->{'%!options'} }
-sub meta_instance { (shift)->{'$!meta_instance'} }
-sub attributes { (shift)->{'@!attributes'} }
+sub options { (shift)->{'options'} }
+sub meta_instance { (shift)->{'meta_instance'} }
+sub attributes { (shift)->{'attributes'} }
-sub associated_metaclass { (shift)->{'$!associated_metaclass'} }
+sub associated_metaclass { (shift)->{'associated_metaclass'} }
## method
-sub intialize_body {
+# this was changed in 0.41, but broke MooseX::Singleton, so try to catch
+# any other code using the original broken spelling
+sub intialize_body { Moose->throw_error("Please correct the spelling of 'intialize_body' to 'initialize_body'") }
+
+sub initialize_body {
my $self = shift;
# TODO:
# the %options should also include a both
$source .= "\n" . 'return $class->Moose::Object::new(@_)';
$source .= "\n" . ' if $class ne \'' . $self->associated_metaclass->name . '\';';
- $source .= "\n" . 'my %params = (scalar @_ == 1) ? %{$_[0]} : @_;';
+ $source .= "\n" . 'my $params = ' . $self->_generate_BUILDARGS('$class', '@_');
- $source .= "\n" . 'my $instance = ' . $self->meta_instance->inline_create_instance('$class');
+ $source .= ";\n" . 'my $instance = ' . $self->meta_instance->inline_create_instance('$class');
$source .= ";\n" . (join ";\n" => map {
$self->_generate_slot_initializer($_)
} 0 .. (@{$self->attributes} - 1));
+ $source .= ";\n" . $self->_generate_triggers();
$source .= ";\n" . $self->_generate_BUILDALL();
$source .= ";\n" . 'return $instance';
$source .= ";\n" . '}';
warn $source if $self->options->{debug};
- my $code;
- {
- # NOTE:
- # create the nessecary lexicals
- # to be picked up in the eval
- my $attrs = $self->attributes;
+ # We need to check if the attribute ->can('type_constraint')
+ # since we may be trying to immutabilize a Moose meta class,
+ # which in turn has attributes which are Class::MOP::Attribute
+ # objects, rather than Moose::Meta::Attribute. And
+ # Class::MOP::Attribute attributes have no type constraints.
+ # However we need to make sure we leave an undef value there
+ # because the inlined code is using the index of the attributes
+ # to determine where to find the type constraint
+
+ my $attrs = $self->attributes;
+
+ my @type_constraints = map {
+ $_->can('type_constraint') ? $_->type_constraint : undef
+ } @$attrs;
+
+ my @type_constraint_bodies = map {
+ defined $_ ? $_->_compiled_type_constraint : undef;
+ } @type_constraints;
+
+ my $code = $self->_compile_code(
+ code => $source,
+ environment => {
+ '$meta' => \$self,
+ '$attrs' => \$attrs,
+ '@type_constraints' => \@type_constraints,
+ '@type_constraint_bodies' => \@type_constraint_bodies,
+ },
+ ) or $self->throw_error("Could not eval the constructor :\n\n$source\n\nbecause :\n\n$@", error => $@, data => $source );
+
+ $self->{'body'} = $code;
+}
- $code = eval $source;
- confess "Could not eval the constructor :\n\n$source\n\nbecause :\n\n$@" if $@;
+sub _generate_BUILDARGS {
+ my ( $self, $class, $args ) = @_;
+
+ my $buildargs = $self->associated_metaclass->find_method_by_name("BUILDARGS");
+
+ if ( $args eq '@_' and ( !$buildargs or $buildargs->body == \&Moose::Object::BUILDARGS ) ) {
+ return join("\n",
+ 'do {',
+ $self->_inline_throw_error('"Single parameters to new() must be a HASH ref"', 'data => $_[0]'),
+ ' if scalar @_ == 1 && defined $_[0] && ref($_[0]) ne q{HASH};',
+ '(scalar @_ == 1) ? {%{$_[0]}} : {@_};',
+ '}',
+ );
+ } else {
+ return $class . "->BUILDARGS($args)";
}
- $self->{'&!body'} = $code;
}
sub _generate_BUILDALL {
my $self = shift;
my @BUILD_calls;
foreach my $method (reverse $self->associated_metaclass->find_all_methods_by_name('BUILD')) {
- push @BUILD_calls => '$instance->' . $method->{class} . '::BUILD(\%params)';
+ push @BUILD_calls => '$instance->' . $method->{class} . '::BUILD($params)';
}
return join ";\n" => @BUILD_calls;
}
+sub _generate_triggers {
+ my $self = shift;
+ my @trigger_calls;
+ foreach my $i (0 .. $#{ $self->attributes }) {
+ my $attr = $self->attributes->[$i];
+ if ($attr->can('has_trigger') && $attr->has_trigger) {
+ if (defined(my $init_arg = $attr->init_arg)) {
+ push @trigger_calls => (
+ '(exists $params->{\'' . $init_arg . '\'}) && do {' . "\n "
+ . '$attrs->[' . $i . ']->trigger->('
+ . '$instance, '
+ . $self->meta_instance->inline_get_slot_value(
+ '$instance',
+ ("'" . $attr->name . "'")
+ )
+ . ', '
+ . '$attrs->[' . $i . ']'
+ . ');'
+ ."\n}"
+ );
+ }
+ }
+ }
+ return join ";\n" => @trigger_calls;
+}
+
sub _generate_slot_initializer {
my $self = shift;
my $index = shift;
my $is_moose = $attr->isa('Moose::Meta::Attribute'); # XXX FIXME
- if ($is_moose && $attr->is_required && !$attr->has_default && !$attr->has_builder) {
- push @source => ('(exists $params{\'' . $attr->init_arg . '\'}) ' .
- '|| confess "Attribute (' . $attr->name . ') is required";');
+ if ($is_moose && defined($attr->init_arg) && $attr->is_required && !$attr->has_default && !$attr->has_builder) {
+ push @source => ('(exists $params->{\'' . $attr->init_arg . '\'}) ' .
+ '|| ' . $self->_inline_throw_error('"Attribute (' . $attr->name . ') is required"') .';');
}
- if ($attr->has_default && !($is_moose && $attr->is_lazy)) {
-
- push @source => 'if (exists $params{\'' . $attr->init_arg . '\'}) {';
-
- push @source => ('my $val = $params{\'' . $attr->init_arg . '\'};');
- if ($is_moose && $attr->has_type_constraint) {
- push @source => ('my $type_constraint = $attrs->[' . $index . ']->type_constraint;');
+ if (($attr->has_default || $attr->has_builder) && !($is_moose && $attr->is_lazy)) {
- if ($attr->should_coerce && $attr->type_constraint->has_coercion) {
- push @source => $self->_generate_type_coercion($attr, '$type_constraint', '$val', '$val');
- }
- push @source => $self->_generate_type_constraint_check($attr, '$type_constraint', '$val');
+ if ( defined( my $init_arg = $attr->init_arg ) ) {
+ push @source => 'if (exists $params->{\'' . $init_arg . '\'}) {';
+ push @source => ('my $val = $params->{\'' . $init_arg . '\'};');
+ push @source => $self->_generate_type_constraint_and_coercion($attr, $index)
+ if $is_moose;
+ push @source => $self->_generate_slot_assignment($attr, '$val', $index);
+ push @source => "} else {";
+ }
+ my $default;
+ if ( $attr->has_default ) {
+ $default = $self->_generate_default_value($attr, $index);
+ }
+ else {
+ my $builder = $attr->builder;
+ $default = '$instance->' . $builder;
}
- push @source => $self->_generate_slot_assignment($attr, '$val');
-
-
- push @source => "} else {";
-
- my $default = $self->_generate_default_value($attr, $index);
-
+
+ push @source => '{'; # wrap this to avoid my $val overwrite warnings
push @source => ('my $val = ' . $default . ';');
- push @source => $self->_generate_type_constraint_check(
- $attr,
- ('$attrs->[' . $index . ']->type_constraint'),
- '$val'
- ) if ($is_moose && $attr->has_type_constraint);
- push @source => $self->_generate_slot_assignment($attr, $default);
+ push @source => $self->_generate_type_constraint_and_coercion($attr, $index)
+ if $is_moose;
+ push @source => $self->_generate_slot_assignment($attr, '$val', $index);
+ push @source => '}'; # close - wrap this to avoid my $val overrite warnings
- push @source => "}";
+ push @source => "}" if defined $attr->init_arg;
}
- else {
- push @source => '(exists $params{\'' . $attr->init_arg . '\'}) && do {';
+ elsif ( defined( my $init_arg = $attr->init_arg ) ) {
+ push @source => '(exists $params->{\'' . $init_arg . '\'}) && do {';
- push @source => ('my $val = $params{\'' . $attr->init_arg . '\'};');
+ push @source => ('my $val = $params->{\'' . $init_arg . '\'};');
if ($is_moose && $attr->has_type_constraint) {
- push @source => ('my $type_constraint = $attrs->[' . $index . ']->type_constraint;');
-
if ($attr->should_coerce && $attr->type_constraint->has_coercion) {
- push @source => $self->_generate_type_coercion($attr, '$type_constraint', '$val', '$val');
+ push @source => $self->_generate_type_coercion(
+ $attr,
+ '$type_constraints[' . $index . ']',
+ '$val',
+ '$val'
+ );
}
- push @source => $self->_generate_type_constraint_check($attr, '$type_constraint', '$val');
+ push @source => $self->_generate_type_constraint_check(
+ $attr,
+ '$type_constraint_bodies[' . $index . ']',
+ '$type_constraints[' . $index . ']',
+ '$val'
+ );
}
- push @source => $self->_generate_slot_assignment($attr, '$val');
+ push @source => $self->_generate_slot_assignment($attr, '$val', $index);
push @source => "}";
}
}
sub _generate_slot_assignment {
- my ($self, $attr, $value) = @_;
- my $source = (
- $self->meta_instance->inline_set_slot_value(
- '$instance',
- ("'" . $attr->name . "'"),
- $value
- ) . ';'
- );
-
- my $is_moose = $attr->isa('Moose::Meta::Attribute'); # XXX FIXME
+ my ($self, $attr, $value, $index) = @_;
+
+ my $source;
+
+ if ($attr->has_initializer) {
+ $source = (
+ '$attrs->[' . $index . ']->set_initial_value($instance, ' . $value . ');'
+ );
+ }
+ else {
+ $source = (
+ $self->meta_instance->inline_set_slot_value(
+ '$instance',
+ ("'" . $attr->name . "'"),
+ $value
+ ) . ';'
+ );
+ }
+
+ my $is_moose = $attr->isa('Moose::Meta::Attribute'); # XXX FIXME
if ($is_moose && $attr->is_weak_ref) {
$source .= (
return $source;
}
+sub _generate_type_constraint_and_coercion {
+ my ($self, $attr, $index) = @_;
+
+ return unless $attr->has_type_constraint;
+
+ my @source;
+ if ($attr->should_coerce && $attr->type_constraint->has_coercion) {
+ push @source => $self->_generate_type_coercion(
+ $attr,
+ '$type_constraints[' . $index . ']',
+ '$val',
+ '$val'
+ );
+ }
+ push @source => $self->_generate_type_constraint_check(
+ $attr,
+ ('$type_constraint_bodies[' . $index . ']'),
+ ('$type_constraints[' . $index . ']'),
+ '$val'
+ );
+ return @source;
+}
+
sub _generate_type_coercion {
my ($self, $attr, $type_constraint_name, $value_name, $return_value_name) = @_;
return ($return_value_name . ' = ' . $type_constraint_name . '->coerce(' . $value_name . ');');
}
sub _generate_type_constraint_check {
- my ($self, $attr, $type_constraint_name, $value_name) = @_;
+ my ($self, $attr, $type_constraint_cv, $type_constraint_obj, $value_name) = @_;
return (
- 'defined(' . $type_constraint_name . '->_compiled_type_constraint->(' . $value_name . '))'
- . "\n\t" . '|| confess "Attribute (' . $attr->name . ') does not pass the type constraint ('
- . $attr->type_constraint->name
- . ') with " . (defined(' . $value_name . ') ? (Scalar::Util::blessed(' . $value_name . ') && overload::Overloaded(' . $value_name . ') ? overload::StrVal(' . $value_name . ') : ' . $value_name . ') : "undef");'
+ $self->_inline_throw_error('"Attribute (' # FIXME add 'dad'
+ . $attr->name
+ . ') does not pass the type constraint because: " . '
+ . $type_constraint_obj . '->get_message(' . $value_name . ')')
+ . "\n\t unless " . $type_constraint_cv . '->(' . $value_name . ');'
);
}
return '$attrs->[' . $index . ']->default($instance)';
}
else {
- my $default = $attr->default;
- # make sure to quote strings ...
- unless (looks_like_number($default)) {
- $default = "'$default'";
- }
-
- return $default;
+ return q{"} . quotemeta( $attr->default ) . q{"};
}
}
=item B<new>
+=item B<can_be_inlined>
+
=item B<attributes>
=item B<meta_instance>
=item B<options>
-=item B<intialize_body>
+=item B<initialize_body>
=item B<associated_metaclass>
+=item B<can_be_inlined>
+
=back
=head1 AUTHORS
=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