X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FClass%2FMOP%2FPackage.pm;h=2911d2e5f4bb9fdaee16130ab837756b0403e8e5;hb=c46b802b9f10829ddce24dbf3fb81d5319f8be8f;hp=275c1652c92dc2e8c0aa9aa6fc12b935f4cbd272;hpb=2243a22b2f3dd10fe1d860722e83526fa3c998b3;p=gitmo%2FClass-MOP.git
diff --git a/lib/Class/MOP/Package.pm b/lib/Class/MOP/Package.pm
index 275c165..2911d2e 100644
--- a/lib/Class/MOP/Package.pm
+++ b/lib/Class/MOP/Package.pm
@@ -5,8 +5,9 @@ use strict;
use warnings;
use Scalar::Util 'blessed';
+use Carp 'confess';
-our $VERSION = '0.01';
+our $VERSION = '0.02';
# introspection
@@ -15,6 +16,145 @@ sub meta {
Class::MOP::Class->initialize(blessed($_[0]) || $_[0]);
}
+# creation ...
+
+sub initialize {
+ my $class = shift;
+ my $package_name = shift;
+ # we hand-construct the class
+ # until we can bootstrap it
+ no strict 'refs';
+ return bless {
+ '$:package' => $package_name,
+ '%:namespace' => \%{$package_name . '::'},
+ } => $class;
+}
+
+# Attributes
+
+# NOTE:
+# all these attribute readers will be bootstrapped
+# away in the Class::MOP bootstrap section
+
+sub name { $_[0]->{'$:package'} }
+sub namespace { $_[0]->{'%:namespace'} }
+
+# utility methods
+
+{
+ my %SIGIL_MAP = (
+ '$' => 'SCALAR',
+ '@' => 'ARRAY',
+ '%' => 'HASH',
+ '&' => 'CODE',
+ );
+
+ sub _deconstruct_variable_name {
+ my ($self, $variable) = @_;
+
+ (defined $variable)
+ || confess "You must pass a variable name";
+
+ my ($sigil, $name) = ($variable =~ /^(.)(.*)$/);
+
+ (defined $sigil)
+ || confess "The variable name must include a sigil";
+
+ (exists $SIGIL_MAP{$sigil})
+ || confess "I do not recognize that sigil '$sigil'";
+
+ return ($name, $sigil, $SIGIL_MAP{$sigil});
+ }
+}
+
+# Class attributes
+
+# ... these functions have to touch the symbol table itself,.. yuk
+
+sub add_package_symbol {
+ my ($self, $variable, $initial_value) = @_;
+
+ my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
+
+ no strict 'refs';
+ no warnings 'redefine', 'misc';
+ *{$self->name . '::' . $name} = ref $initial_value ? $initial_value : \$initial_value;
+}
+
+sub remove_package_glob {
+ my ($self, $name) = @_;
+ no strict 'refs';
+ delete ${$self->name . '::'}{$name};
+}
+
+# ... these functions deal with stuff on the namespace level
+
+sub has_package_symbol {
+ my ($self, $variable) = @_;
+
+ my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
+
+ return 0 unless exists $self->namespace->{$name};
+ defined *{$self->namespace->{$name}}{$type} ? 1 : 0;
+}
+
+sub get_package_symbol {
+ my ($self, $variable) = @_;
+
+ my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
+
+ $self->add_package_symbol($variable)
+ unless exists $self->namespace->{$name};
+ return *{$self->namespace->{$name}}{$type};
+}
+
+sub remove_package_symbol {
+ my ($self, $variable) = @_;
+
+ my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
+
+ # FIXME:
+ # no doubt this is grossly inefficient and
+ # could be done much easier and faster in XS
+
+ my ($scalar, $array, $hash, $code);
+ if ($type eq 'SCALAR') {
+ $array = $self->get_package_symbol('@' . $name) if $self->has_package_symbol('@' . $name);
+ $hash = $self->get_package_symbol('%' . $name) if $self->has_package_symbol('%' . $name);
+ $code = $self->get_package_symbol('&' . $name) if $self->has_package_symbol('&' . $name);
+ }
+ elsif ($type eq 'ARRAY') {
+ $scalar = $self->get_package_symbol('$' . $name) if $self->has_package_symbol('$' . $name);
+ $hash = $self->get_package_symbol('%' . $name) if $self->has_package_symbol('%' . $name);
+ $code = $self->get_package_symbol('&' . $name) if $self->has_package_symbol('&' . $name);
+ }
+ elsif ($type eq 'HASH') {
+ $scalar = $self->get_package_symbol('$' . $name) if $self->has_package_symbol('$' . $name);
+ $array = $self->get_package_symbol('@' . $name) if $self->has_package_symbol('@' . $name);
+ $code = $self->get_package_symbol('&' . $name) if $self->has_package_symbol('&' . $name);
+ }
+ elsif ($type eq 'CODE') {
+ $scalar = $self->get_package_symbol('$' . $name) if $self->has_package_symbol('$' . $name);
+ $array = $self->get_package_symbol('@' . $name) if $self->has_package_symbol('@' . $name);
+ $hash = $self->get_package_symbol('%' . $name) if $self->has_package_symbol('%' . $name);
+ }
+ else {
+ confess "This should never ever ever happen";
+ }
+
+ $self->remove_package_glob($name);
+
+ $self->add_package_symbol(('$' . $name) => $scalar) if defined $scalar;
+ $self->add_package_symbol(('@' . $name) => $array) if defined $array;
+ $self->add_package_symbol(('%' . $name) => $hash) if defined $hash;
+ $self->add_package_symbol(('&' . $name) => $code) if defined $code;
+}
+
+sub list_all_package_symbols {
+ my ($self) = @_;
+ return keys %{$self->namespace};
+}
+
1;
__END__
@@ -35,12 +175,32 @@ Class::MOP::Package - Package Meta Object
=item B
+=item B
+
+=item B
+
+=item B
+
+=item B
+
+=item B
+
+=item B
+
+=item B
+
+=item B
+
+=item B
+
=back
-=head1 AUTHOR
+=head1 AUTHORS
Stevan Little Estevan@iinteractive.comE
+Yuval Kogman Enothingmuch@woobling.comE
+
=head1 COPYRIGHT AND LICENSE
Copyright 2006 by Infinity Interactive, Inc.