use Scalar::Util 'blessed', 'reftype';
use Carp 'confess';
+use Package::Stash;
-our $VERSION = '0.98';
+our $VERSION = '1.12';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
-use base 'Class::MOP::Object', 'Class::MOP::Mixin::HasMethods';
+use base 'Class::MOP::Object';
# creation ...
# all these attribute readers will be bootstrapped
# away in the Class::MOP bootstrap section
-sub namespace {
- # NOTE:
- # because of issues with the Perl API
- # to the typeglob in some versions, we
- # need to just always grab a new
- # reference to the hash here. Ideally
- # we could just store a ref and it would
- # Just Work, but oh well :\
- no strict 'refs';
- \%{$_[0]->{'package'} . '::'}
+sub _package_stash {
+ $_[0]->{_package_stash} ||= Package::Stash->new($_[0]->name)
}
-
-# 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 $sigil = substr($variable, 0, 1, '');
-
- (defined $sigil)
- || confess "The variable name must include a sigil";
-
- (exists $SIGIL_MAP{$sigil})
- || confess "I do not recognize that sigil '$sigil'";
-
- return ($variable, $sigil, $SIGIL_MAP{$sigil});
- }
+sub namespace {
+ $_[0]->_package_stash->namespace
}
# Class attributes
# ... these functions have to touch the symbol table itself,.. yuk
sub add_package_symbol {
- my ($self, $variable, $initial_value) = @_;
-
- my ($name, $sigil, $type) = ref $variable eq 'HASH'
- ? @{$variable}{qw[name sigil type]}
- : $self->_deconstruct_variable_name($variable);
-
- my $pkg = $self->{'package'};
-
- no strict 'refs';
- no warnings 'redefine', 'misc', 'prototype';
- *{$pkg . '::' . $name} = ref $initial_value ? $initial_value : \$initial_value;
+ my $self = shift;
+ $self->_package_stash->add_symbol(@_);
}
sub remove_package_glob {
- my ($self, $name) = @_;
- no strict 'refs';
- delete ${$self->name . '::'}{$name};
+ my $self = shift;
+ $self->_package_stash->remove_glob(@_);
}
# ... these functions deal with stuff on the namespace level
sub has_package_symbol {
- my ( $self, $variable ) = @_;
-
- my ( $name, $sigil, $type )
- = ref $variable eq 'HASH'
- ? @{$variable}{qw[name sigil type]}
- : $self->_deconstruct_variable_name($variable);
-
- my $namespace = $self->namespace;
-
- return 0 unless exists $namespace->{$name};
-
- my $entry_ref = \$namespace->{$name};
- if ( reftype($entry_ref) eq 'GLOB' ) {
- if ( $type eq 'SCALAR' ) {
- return defined( ${ *{$entry_ref}{SCALAR} } );
- }
- else {
- return defined( *{$entry_ref}{$type} );
- }
- }
- else {
-
- # a symbol table entry can be -1 (stub), string (stub with prototype),
- # or reference (constant)
- return $type eq 'CODE';
- }
+ my $self = shift;
+ $self->_package_stash->has_symbol(@_);
}
sub get_package_symbol {
- my ($self, $variable) = @_;
-
- my ($name, $sigil, $type) = ref $variable eq 'HASH'
- ? @{$variable}{qw[name sigil type]}
- : $self->_deconstruct_variable_name($variable);
-
- my $namespace = $self->namespace;
-
- # FIXME
- $self->add_package_symbol($variable)
- unless exists $namespace->{$name};
-
- my $entry_ref = \$namespace->{$name};
+ my $self = shift;
+ $self->_package_stash->get_symbol(@_);
+}
- if ( ref($entry_ref) eq 'GLOB' ) {
- return *{$entry_ref}{$type};
- }
- else {
- if ( $type eq 'CODE' ) {
- no strict 'refs';
- return \&{ $self->name . '::' . $name };
- }
- else {
- return undef;
- }
- }
+sub get_or_add_package_symbol {
+ my $self = shift;
+ $self->_package_stash->get_or_add_symbol(@_);
}
sub remove_package_symbol {
- my ($self, $variable) = @_;
-
- my ($name, $sigil, $type) = ref $variable eq 'HASH'
- ? @{$variable}{qw[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_desc, $array_desc, $hash_desc, $code_desc) = (
- { sigil => '$', type => 'SCALAR', name => $name },
- { sigil => '@', type => 'ARRAY', name => $name },
- { sigil => '%', type => 'HASH', name => $name },
- { sigil => '&', type => 'CODE', name => $name },
- );
-
- my ($scalar, $array, $hash, $code);
- if ($type eq 'SCALAR') {
- $array = $self->get_package_symbol($array_desc) if $self->has_package_symbol($array_desc);
- $hash = $self->get_package_symbol($hash_desc) if $self->has_package_symbol($hash_desc);
- $code = $self->get_package_symbol($code_desc) if $self->has_package_symbol($code_desc);
- }
- elsif ($type eq 'ARRAY') {
- $scalar = $self->get_package_symbol($scalar_desc) if $self->has_package_symbol($scalar_desc);
- $hash = $self->get_package_symbol($hash_desc) if $self->has_package_symbol($hash_desc);
- $code = $self->get_package_symbol($code_desc) if $self->has_package_symbol($code_desc);
- }
- elsif ($type eq 'HASH') {
- $scalar = $self->get_package_symbol($scalar_desc) if $self->has_package_symbol($scalar_desc);
- $array = $self->get_package_symbol($array_desc) if $self->has_package_symbol($array_desc);
- $code = $self->get_package_symbol($code_desc) if $self->has_package_symbol($code_desc);
- }
- elsif ($type eq 'CODE') {
- $scalar = $self->get_package_symbol($scalar_desc) if $self->has_package_symbol($scalar_desc);
- $array = $self->get_package_symbol($array_desc) if $self->has_package_symbol($array_desc);
- $hash = $self->get_package_symbol($hash_desc) if $self->has_package_symbol($hash_desc);
- }
- else {
- confess "This should never ever ever happen";
- }
-
- $self->remove_package_glob($name);
-
- $self->add_package_symbol($scalar_desc => $scalar) if defined $scalar;
- $self->add_package_symbol($array_desc => $array) if defined $array;
- $self->add_package_symbol($hash_desc => $hash) if defined $hash;
- $self->add_package_symbol($code_desc => $code) if defined $code;
+ my $self = shift;
+ $self->_package_stash->remove_symbol(@_);
}
sub list_all_package_symbols {
- my ($self, $type_filter) = @_;
-
- my $namespace = $self->namespace;
- return keys %{$namespace} unless defined $type_filter;
-
- # NOTE:
- # or we can filter based on
- # type (SCALAR|ARRAY|HASH|CODE)
- if ( $type_filter eq 'CODE' ) {
- return grep {
- (ref($namespace->{$_})
- ? (ref($namespace->{$_}) eq 'SCALAR')
- : (ref(\$namespace->{$_}) eq 'GLOB'
- && defined(*{$namespace->{$_}}{CODE})));
- } keys %{$namespace};
- } else {
- return grep { *{$namespace->{$_}}{$type_filter} } keys %{$namespace};
- }
+ my $self = shift;
+ $self->_package_stash->list_all_symbols(@_);
+}
+
+sub get_all_package_symbols {
+ my $self = shift;
+ $self->_package_stash->get_all_symbols(@_);
}
1;
or undef if it does not exist. The C<$variable_name> must contain a
leading sigil.
+=item B<< $metapackage->get_or_add_package_symbol($variable_name) >>
+
+Given a variable name, this method returns the variable as a reference.
+If it does not exist, a default value will be generated if possible. The
+C<$variable_name> must contain a leading sigil.
+
=item B<< $metapackage->has_package_symbol($variable_name) >>
Returns true if there is a package variable defined for
hash reference. The keys are glob names and the values are references
to the value for that name.
-=back
-
-=head2 Method introspection and creation
-
-These methods allow you to introspect a class's methods, as well as
-add, remove, or change methods.
-
-Determining what is truly a method in a Perl 5 class requires some
-heuristics (aka guessing).
-
-Methods defined outside the package with a fully qualified name (C<sub
-Package::name { ... }>) will be included. Similarly, methods named
-with a fully qualified name using L<Sub::Name> are also included.
-
-However, we attempt to ignore imported functions.
-
-Ultimately, we are using heuristics to determine what truly is a
-method in a class, and these heuristics may get the wrong answer in
-some edge cases. However, for most "normal" cases the heuristics work
-correctly.
-
-=over 4
-
-=item B<< $metapackage->get_method($method_name) >>
-
-This will return a L<Class::MOP::Method> for the specified
-C<$method_name>. If the class does not have the specified method, it
-returns C<undef>
-
-=item B<< $metapackage->has_method($method_name) >>
-
-Returns a boolean indicating whether or not the class defines the
-named method. It does not include methods inherited from parent
-classes.
-
-=item B<< $metapackage->get_method_list >>
-
-This will return a list of method I<names> for all methods defined in
-this class.
-
-=item B<< $metapackage->add_method($method_name, $method) >>
-
-This method takes a method name and a subroutine reference, and adds
-the method to the class.
-
-The subroutine reference can be a L<Class::MOP::Method>, and you are
-strongly encouraged to pass a meta method object instead of a code
-reference. If you do so, that object gets stored as part of the
-class's method map directly. If not, the meta information will have to
-be recreated later, and may be incorrect.
-
-If you provide a method object, this method will clone that object if
-the object's package name does not match the class name. This lets us
-track the original source of any methods added from other classes
-(notably Moose roles).
-
-=item B<< $metapackage->remove_method($method_name) >>
-
-Remove the named method from the class. This method returns the
-L<Class::MOP::Method> object for the method.
-
-=item B<< $metapackage->method_metaclass >>
-
-Returns the class name of the method metaclass, see
-L<Class::MOP::Method> for more information on the method metaclass.
-
-=item B<< $metapackage->wrapped_method_metaclass >>
-
-Returns the class name of the wrapped method metaclass, see
-L<Class::MOP::Method::Wrapped> for more information on the wrapped
-method metaclass.
-
=item B<< Class::MOP::Package->meta >>
This will return a L<Class::MOP::Class> instance for this class.
projects / gitmo/Class-MOP.git / blobdiff