use Scalar::Util 'blessed', 'weaken', 'looks_like_number', 'refaddr';
use Try::Tiny;
-our $VERSION = '1.19';
-our $AUTHORITY = 'cpan:STEVAN';
-
use base 'Moose::Meta::Method',
'Class::MOP::Method::Constructor';
'name' => $options{name},
'options' => $options{options},
'associated_metaclass' => $meta,
+ 'definition_context' => $options{definition_context},
'_expected_method_class' => $options{_expected_method_class} || 'Moose::Object',
} => $class;
};
}
-sub _generate_constructor_method_inline {
- my $self = shift;
- # TODO:
- # the %options should also include a both
- # a call 'initializer' and call 'SUPER::'
- # options, which should cover approx 90%
- # of the possible use cases (even if it
- # requires some adaption on the part of
- # the author, after all, nothing is free)
-
- my @source = (
- 'sub {',
- 'my $_instance = shift;',
- 'my $class = Scalar::Util::blessed($_instance) || $_instance;',
- 'if ($class ne \'' . $self->associated_metaclass->name . '\') {',
- 'return ' . $self->_generate_fallback_constructor('$class') . ';',
- '}',
- $self->_generate_params('$params', '$class'),
- $self->_generate_instance('$instance', '$class'),
- $self->_generate_slot_initializers,
- $self->_generate_triggers,
- $self->_generate_BUILDALL,
- 'return $instance;',
- '}'
- );
- warn join("\n", @source) if $self->options->{debug};
-
- return try {
- $self->_compile_code(\@source);
- }
- catch {
- my $source = join("\n", @source);
- $self->throw_error(
- "Could not eval the constructor :\n\n$source\n\nbecause :\n\n$_",
- error => $_,
- data => $source,
- );
- };
-}
-
-sub _generate_fallback_constructor {
- my $self = shift;
- my ($class_var) = @_;
- return $class_var . '->Moose::Object::new(@_)'
-}
-
-sub _generate_params {
- my $self = shift;
- my ($var, $class_var) = @_;
- return (
- 'my ' . $var . ' = ',
- $self->_generate_BUILDARGS($class_var, '@_'),
- ';',
- );
-}
-
-sub _generate_instance {
- my $self = shift;
- my ($var, $class_var) = @_;
- my $meta = $self->associated_metaclass;
-
- return (
- 'my ' . $var . ' = ',
- $meta->inline_create_instance($class_var) . ';',
- );
-}
-
-sub _generate_slot_initializers {
- my $self = shift;
- return map { $self->_generate_slot_initializer($_) }
- 0 .. (@{$self->_attributes} - 1);
-}
-
-sub _generate_BUILDARGS {
- my $self = shift;
- my ($class, $args) = @_;
-
- my $buildargs = $self->associated_metaclass->find_method_by_name("BUILDARGS");
-
- if ($args eq '@_'
- && (!$buildargs or $buildargs->body == \&Moose::Object::BUILDARGS)) {
-
- return (
- 'do {',
- 'my $params;',
- 'if (scalar @_ == 1) {',
- 'if (!defined($_[0]) || ref($_[0]) ne \'HASH\') {',
- $self->_inline_throw_error(
- '"Single parameters to new() must be a HASH ref"',
- 'data => $_[0]',
- ) . ';',
- '}',
- '$params = { %{ $_[0] } };',
- '}',
- 'elsif (@_ % 2) {',
- 'Carp::carp(',
- '"The new() method for ' . $class . ' expects a '
- . 'hash reference or a key/value list. You passed an '
- . 'odd number of arguments"',
- ');',
- '$params = {@_, undef};',
- '}',
- 'else {',
- '$params = {@_};',
- '}',
- '$params;',
- '}',
- );
- }
- else {
- return $class . '->BUILDARGS(' . $args . ')';
- }
-}
-
-sub _generate_BUILDALL {
- my $self = shift;
-
- my @methods = reverse $self->associated_metaclass->find_all_methods_by_name('BUILD');
- my @BUILD_calls;
-
- foreach my $method (@methods) {
- push @BUILD_calls,
- '$instance->' . $method->{class} . '::BUILD($params);';
- }
-
- return @BUILD_calls;
-}
-
-sub _generate_triggers {
- my $self = shift;
- my @trigger_calls;
-
- for my $i (0 .. $#{ $self->_attributes }) {
- my $attr = $self->_attributes->[$i];
-
- next unless $attr->can('has_trigger') && $attr->has_trigger;
-
- my $init_arg = $attr->init_arg;
- next unless defined $init_arg;
-
- push @trigger_calls,
- 'if (exists $params->{\'' . $init_arg . '\'}) {',
- '$attrs->[' . $i . ']->trigger->(',
- '$instance,',
- $attr->_inline_instance_get('$instance') . ',',
- ');',
- '}';
- }
-
- return @trigger_calls;
-}
-
-sub _generate_slot_initializer {
- my $self = shift;
- my ($index) = @_;
-
- my $attr = $self->_attributes->[$index];
-
- my @source = ('## ' . $attr->name);
-
- push @source, $self->_check_required_attr($attr);
-
- if (defined $attr->init_arg) {
- push @source,
- 'if (exists $params->{\'' . $attr->init_arg . '\'}) {',
- $self->_init_attr_from_constructor($attr, $index),
- '}';
- if (my @default = $self->_init_attr_from_default($attr, $index)) {
- push @source,
- 'else {',
- @default,
- '}';
- }
- }
- else {
- if (my @default = $self->_init_attr_from_default($attr, $index)) {
- push @source,
- '{', # _init_attr_from_default creates variables
- @default,
- '}';
- }
- }
-
- return @source;
-}
-
-sub _check_required_attr {
- my $self = shift;
- my ($attr) = @_;
-
- return unless defined $attr->init_arg;
- return unless $attr->can('is_required') && $attr->is_required;
- return if $attr->has_default || $attr->has_builder;
-
- return (
- 'if (!exists $params->{\'' . $attr->init_arg . '\'}) {',
- $self->_inline_throw_error(
- '"Attribute (' . quotemeta($attr->name) . ') is required"'
- ) . ';',
- '}',
- );
-}
-
-sub _init_attr_from_constructor {
- my $self = shift;
- my ($attr, $index) = @_;
-
- return (
- 'my $val = $params->{\'' . $attr->init_arg . '\'};',
- $self->_generate_slot_assignment($attr, $index, '$val'),
- );
-}
-
-sub _init_attr_from_default {
- my $self = shift;
- my ($attr, $index) = @_;
-
- my $default = $self->_generate_default_value($attr, $index);
- return unless $default;
-
- return (
- 'my $val = ' . $default . ';',
- $self->_generate_slot_assignment($attr, $index, '$val'),
- );
-}
-
-sub _generate_slot_assignment {
- my $self = shift;
- my ($attr, $index, $value) = @_;
-
- my @source;
-
- if ($self->can('_generate_type_constraint_and_coercion')) {
- push @source, $self->_generate_type_constraint_and_coercion(
- $attr, $index, $value,
- );
- }
-
- if ($attr->has_initializer) {
- push @source, (
- '$attrs->[' . $index . ']->set_initial_value(',
- '$instance' . ',',
- $value . ',',
- ');'
- );
- }
- else {
- push @source, (
- $attr->_inline_instance_set('$instance', $value) . ';',
- );
- }
-
- return @source;
-}
-
-sub _generate_type_constraint_and_coercion {
- my $self = shift;
- my ($attr, $index, $value) = @_;
-
- return unless $attr->can('has_type_constraint')
- && $attr->has_type_constraint;
-
- my @source;
-
- if ($attr->should_coerce && $attr->type_constraint->has_coercion) {
- push @source => $self->_generate_type_coercion(
- '$type_constraints[' . $index . ']',
- $value,
- $value,
- );
- }
-
- push @source => $self->_generate_type_constraint_check(
- $attr,
- '$type_constraint_bodies[' . $index . ']',
- '$type_constraints[' . $index . ']',
- $value,
- );
-
- return @source;
-}
-
-sub _generate_type_coercion {
- my $self = shift;
- my ($tc_obj, $value, $return_value) = @_;
- return $return_value . ' = ' . $tc_obj . '->coerce(' . $value . ');';
-}
-
-sub _generate_type_constraint_check {
- my $self = shift;
- my ($attr, $tc_body, $tc_obj, $value) = @_;
- return (
- $self->_inline_throw_error(
- '"Attribute (' . quotemeta($attr->name) . ') '
- . 'does not pass the type constraint because: " . '
- . $tc_obj . '->get_message(' . $value . ')'
- ),
- 'unless ' . $tc_body . '->(' . $value . ');'
- );
-}
-
1;
+# ABSTRACT: Method Meta Object for constructors
+
__END__
=pod
-=head1 NAME
-
-Moose::Meta::Method::Constructor - Method Meta Object for constructors
-
=head1 DESCRIPTION
This class is a subclass of L<Class::MOP::Method::Constructor> that
See L<Moose/BUGS> for details on reporting bugs.
-=head1 AUTHORS
-
-Stevan Little E<lt>stevan@iinteractive.comE<gt>
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2006-2010 by Infinity Interactive, Inc.
-
-L<http://www.iinteractive.com>
-
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
-
=cut
projects / gitmo/Moose.git / blobdiff