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|
# You may distribute under the terms of either the GNU General Public License
# or the Artistic License (the same terms as Perl itself)
#
# (C) Paul Evans, 2010-2024 -- leonerd@leonerd.org.uk
use v5.26;
use warnings;
use Object::Pad 0.800;
package Tangence::Class 0.33;
class Tangence::Class :isa(Tangence::Meta::Class);
use Tangence::Constants;
use Tangence::Property;
use Tangence::Meta::Method;
use Tangence::Meta::Event;
use Tangence::Meta::Argument;
use Carp;
use meta 0.007; # set_subname
no warnings 'meta::experimental';
=head1 NAME
C<Tangence::Class> - server implementation of a C<Tangence> class
=head1 DESCRIPTION
This module is a component of L<Tangence::Server>. It is not intended for
end-user use directly.
=cut
our %CLASSES; # cache one per class, keyed by _Tangence_ class name
sub make ( $class, %args )
{
my $name = $args{name};
return $CLASSES{$name} //= $class->new( %args );
}
sub _new_type ( $sig )
{
return Tangence::Type->make_from_sig( $sig );
}
sub declare ( $class, $perlname, %args )
{
( my $name = $perlname ) =~ s{::}{.}g;
if( exists $CLASSES{$name} ) {
croak "Cannot re-declare $name";
}
my $self = $class->make( name => $name );
my %methods;
foreach ( keys %{ $args{methods} } ) {
my %params = %{ $args{methods}{$_} };
$methods{$_} = Tangence::Meta::Method->new(
class => $self,
name => $_,
arguments => [ map {
Tangence::Meta::Argument->new( name => $_->[0], type => _new_type( $_->[1] ) )
} @{ delete $params{args} } ],
ret => _new_type( delete $params{ret} ),
%params,
);
}
my %events;
foreach ( keys %{ $args{events} } ) {
my %params = %{ $args{events}{$_} };
$events{$_} = Tangence::Meta::Event->new(
class => $self,
name => $_,
arguments => [ map {
Tangence::Meta::Argument->new( name => $_->[0], type => _new_type( $_->[1] ) )
} @{ delete $params{args} } ],
%params,
);
}
my %properties;
foreach ( keys %{ $args{props} } ) {
my %params = %{ $args{props}{$_} };
$properties{$_} = Tangence::Property->new(
class => $self,
name => $_,
dimension => ( delete $params{dim} ) || DIM_SCALAR,
type => _new_type( delete $params{type} ),
%params,
);
}
my @superclasses;
foreach ( @{ $args{superclasses} } ) {
push @superclasses, Tangence::Class->for_perlname( $_ );
}
$self->define(
methods => \%methods,
events => \%events,
properties => \%properties,
superclasses => \@superclasses,
);
}
method define
{
$self->SUPER::define( @_ );
my $class = $self->perlname;
my $classmeta = meta::package->get( $class );
my %subs;
foreach my $prop ( values %{ $self->direct_properties } ) {
$prop->build_accessor( \%subs );
}
foreach my $name ( keys %subs ) {
next if $classmeta->try_get_symbol( '&' . $name );
$classmeta->add_symbol(
'&' . $name => $subs{$name}
)->set_subname( "${class}::${name}" );
}
}
sub for_name ( $class, $name )
{
return $CLASSES{$name} // croak "Unknown Tangence::Class for '$name'";
}
sub for_perlname ( $class, $perlname )
{
( my $name = $perlname ) =~ s{::}{.}g;
return $CLASSES{$name} // croak "Unknown Tangence::Class for '$perlname'";
}
sub superclasses
{
my $self = shift;
my @supers = $self->SUPER::superclasses;
if( !@supers and $self->perlname ne "Tangence::Object" ) {
@supers = Tangence::Class->for_perlname( "Tangence::Object" );
}
return @supers;
}
method method ( $name )
{
return $self->methods->{$name};
}
method event ( $name )
{
return $self->events->{$name};
}
method property ( $name )
{
return $self->properties->{$name};
}
field $smashkeys;
method smashkeys
{
return $smashkeys //= do {
my %smash;
$smash{$_->name} = 1 for grep { $_->smashed } values %{ $self->properties };
$Tangence::Message::SORT_HASH_KEYS ? [ sort keys %smash ] : [ keys %smash ];
};
}
=head1 AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
=cut
0x55AA;
|
