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package Class::MOP::Method::Inlined;
use strict;
use warnings;
use Carp 'confess';
use Scalar::Util 'blessed', 'weaken', 'looks_like_number', 'refaddr';
our $VERSION = '1.04';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
use base 'Class::MOP::Method::Generated';
sub _expected_method_class { $_[0]{_expected_method_class} }
sub _uninlined_body {
my $self = shift;
my $super_method
= $self->associated_metaclass->find_next_method_by_name( $self->name )
or return;
if ( $super_method->isa(__PACKAGE__) ) {
return $super_method->_uninlined_body;
}
else {
return $super_method->body;
}
}
sub can_be_inlined {
my $self = shift;
my $metaclass = $self->associated_metaclass;
my $class = $metaclass->name;
# If we don't find an inherited method, this is a rather weird
# case where we have no method in the inheritance chain even
# though we're expecting one to be there
my $inherited_method
= $metaclass->find_next_method_by_name( $self->name );
if ( $inherited_method
&& $inherited_method->isa('Class::MOP::Method::Wrapped') ) {
warn "Not inlining '"
. $self->name
. "' for $class since it "
. "has method modifiers which would be lost if it were inlined\n";
return 0;
}
my $expected_class = $self->_expected_method_class
or return 1;
# if we are shadowing a method we first verify that it is
# compatible with the definition we are replacing it with
my $expected_method = $expected_class->can( $self->name );
if ( ! $expected_method ) {
warn "Not inlining '"
. $self->name
. "' for $class since ${expected_class}::"
. $self->name
. " is not defined\n";
return 0;
}
my $actual_method = $class->can( $self->name )
or return 1;
# the method is what we wanted (probably Moose::Object::new)
return 1
if refaddr($expected_method) == refaddr($actual_method);
# otherwise we have to check that the actual method is an inlined
# version of what we're expecting
if ( $inherited_method->isa(__PACKAGE__) ) {
if ( $inherited_method->_uninlined_body
&& refaddr( $inherited_method->_uninlined_body )
== refaddr($expected_method) ) {
return 1;
}
}
elsif ( refaddr( $inherited_method->body )
== refaddr($expected_method) ) {
return 1;
}
my $warning
= "Not inlining '"
. $self->name
. "' for $class since it is not"
. " inheriting the default ${expected_class}::"
. $self->name . "\n";
if ( $self->isa("Class::MOP::Method::Constructor") ) {
# FIXME kludge, refactor warning generation to a method
$warning
.= "If you are certain you don't need to inline your"
. " constructor, specify inline_constructor => 0 in your"
. " call to $class->meta->make_immutable\n";
}
warn $warning;
return 0;
}
1;
__END__
=pod
=head1 NAME
Class::MOP::Method::Inlined - Method base class for methods which have been inlined
=head1 DESCRIPTION
This is a L<Class::MOP::Method::Generated> subclass for methods which
can be inlined.
=head1 METHODS
=over 4
=item B<< $metamethod->can_be_inlined >>
This method returns true if the method in question can be inlined in
the associated metaclass.
If it cannot be inlined, it spits out a warning and returns false.
=back
=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
|
