use warnings;
use Carp 'confess';
-use Scalar::Util 'blessed', 'weaken', 'looks_like_number';
+use Scalar::Util 'blessed', 'weaken';
+use Try::Tiny;
-our $VERSION = '0.94';
+our $VERSION = '1.11';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
## cached values ...
-sub _meta_instance {
- my $self = shift;
- $self->{'meta_instance'} ||= $self->associated_metaclass->get_meta_instance;
-}
-
sub _attributes {
my $self = shift;
$self->{'attributes'} ||= [ $self->associated_metaclass->get_all_attributes ]
return sub { Class::MOP::Class->initialize(shift)->new_object(@_) }
}
-sub _generate_constructor_method_inline {
+sub _eval_environment {
my $self = shift;
+ my $defaults = [map { $_->default } @{ $self->_attributes }];
+ return {
+ '$defaults' => \$defaults,
+ };
+}
- my $close_over = {};
-
- my $source = 'sub {';
- $source .= "\n" . 'my $class = shift;';
-
- $source .= "\n" . 'return Class::MOP::Class->initialize($class)->new_object(@_)';
- $source .= "\n" . ' if $class ne \'' . $self->associated_metaclass->name . '\';';
+sub _generate_constructor_method_inline {
+ my $self = shift;
- $source .= "\n" . 'my $params = @_ == 1 ? $_[0] : {@_};';
+ my $meta = $self->associated_metaclass;
+
+ my $idx = 0;
+ my @source = (
+ 'sub {',
+ 'my $class = shift;',
+ 'return Class::MOP::Class->initialize($class)->new_object(@_)',
+ 'if $class ne \'' . $meta->name . '\';',
+ 'my $params = @_ == 1 ? $_[0] : {@_};',
+ 'my $instance = ' . $meta->inline_create_instance('$class') . ';',
+ (map { $self->_generate_slot_initializer($_, $idx++) }
+ @{ $self->_attributes }),
+ $self->_preserve_weak_metaclasses,
+ 'return $instance',
+ '}',
+ );
- $source .= "\n" . 'my $instance = ' . $self->_meta_instance->inline_create_instance('$class');
- $source .= ";\n" . (join ";\n" => map {
- $self->_generate_slot_initializer($_, $close_over)
- } @{ $self->_attributes });
- $source .= ";\n" . 'return $instance';
- $source .= ";\n" . '}';
- warn $source if $self->options->{debug};
+ warn join("\n", @source) if $self->options->{debug};
- my ( $code, $e ) = $self->_eval_closure(
- $close_over,
- $source
- );
- confess "Could not eval the constructor :\n\n$source\n\nbecause :\n\n$e" if $e;
+ my $code = try {
+ $self->_compile_code(\@source);
+ }
+ catch {
+ my $source = join("\n", @source);
+ confess "Could not eval the constructor :\n\n$source\n\nbecause :\n\n$_";
+ };
return $code;
}
sub _generate_slot_initializer {
my $self = shift;
- my $attr = shift;
- my $close = shift;
+ my ($attr, $idx) = @_;
+
+ my $default = $self->_generate_default_value($attr, $idx);
+
+ if (defined(my $init_arg = $attr->init_arg)) {
+ my @source = (
+ 'if (exists $params->{\'' . $init_arg . '\'}) {',
+ $attr->inline_set(
+ '$instance', '$params->{\'' . $init_arg . '\'}'
+ ) . ';',
+ '}',
+ );
+ if (defined $default) {
+ push @source, (
+ 'else {',
+ $attr->inline_set('$instance', $default) . ';',
+ '}',
+ );
+ }
+ return @source;
+ }
+ elsif (defined $default) {
+ return ($attr->inline_set('$instance', $default) . ';');
+ }
+ else {
+ return ();
+ }
+}
+
+sub _preserve_weak_metaclasses {
+ my $self = shift;
+ my $meta = $self->associated_metaclass;
+ if (Class::MOP::metaclass_is_weak($meta->name)) {
+ return (
+ $meta->_inline_set_mop_slot(
+ '$instance', 'Class::MOP::class_of($class)'
+ ) . ';'
+ );
+ }
+ else {
+ return ();
+ }
+}
+
+sub _generate_default_value {
+ my $self = shift;
+ my ($attr, $index) = @_;
- my $default;
if ($attr->has_default) {
# NOTE:
# default values can either be CODE refs
# in which case we can just deal with them
# in the code we eval.
if ($attr->is_default_a_coderef) {
- my $idx = @{$close->{'@defaults'}||=[]};
- push(@{$close->{'@defaults'}}, $attr->default);
- $default = '$defaults[' . $idx . ']->($instance)';
+ return '$defaults->[' . $index . ']->($instance)';
}
else {
- $default = $attr->default;
- # make sure to quote strings ...
- unless (looks_like_number($default)) {
- $default = "'$default'";
- }
+ return '$defaults->[' . $index . ']';
}
- } elsif( $attr->has_builder ) {
- $default = '$instance->'.$attr->builder;
}
-
- if ( defined(my $init_arg = $attr->init_arg) ) {
- return (
- 'if(exists $params->{\'' . $init_arg . '\'}){' . "\n" .
- $self->_meta_instance->inline_set_slot_value(
- '$instance',
- $attr->name,
- '$params->{\'' . $init_arg . '\'}' ) . "\n" .
- '} ' . (!defined $default ? '' : 'else {' . "\n" .
- $self->_meta_instance->inline_set_slot_value(
- '$instance',
- $attr->name,
- $default ) . "\n" .
- '}')
- );
- } elsif ( defined $default ) {
- return (
- $self->_meta_instance->inline_set_slot_value(
- '$instance',
- $attr->name,
- $default ) . "\n"
- );
- } else { return '' }
+ elsif ($attr->has_builder) {
+ return '$instance->' . $attr->builder;
+ }
+ else {
+ return;
+ }
}
1;
=head1 COPYRIGHT AND LICENSE
-Copyright 2006-2009 by Infinity Interactive, Inc.
+Copyright 2006-2010 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>