package Mouse::Meta::Role;
use strict;
use warnings;
-use Carp 'confess';
+use Mouse::Util qw(not_supported);
use base qw(Mouse::Meta::Module);
-do {
- my %METACLASS_CACHE;
-
- # because Mouse doesn't introspect existing classes, we're forced to
- # only pay attention to other Mouse classes
- sub _metaclass_cache {
- my $class = shift;
- my $name = shift;
- return $METACLASS_CACHE{$name};
- }
-
- sub initialize {
- my($class, $package_name, @args) = @_;
-
- ($package_name && !ref($package_name))\r
- || confess("You must pass a package name and it cannot be blessed");\r
-
- return $METACLASS_CACHE{$package_name}
- ||= $class->_new(package => $package_name, @args);
- }
-};
+sub method_metaclass(){ 'Mouse::Meta::Role::Method' } # required for get_method()
sub _new {
my $class = shift;
sub get_roles { $_[0]->{roles} }
+sub get_required_method_list{
+ return @{ $_[0]->{required_methods} };
+}
sub add_required_methods {
my $self = shift;
push @{$self->{required_methods}}, @methods;
}
+sub requires_method {
+ my($self, $name) = @_;
+ return scalar( grep{ $_ eq $name } @{ $self->{required_methods} } ) != 0;
+}
+
sub add_attribute {
my $self = shift;
my $name = shift;
- my $spec = shift;
- $self->{attributes}->{$name} = $spec;
-}
-sub has_attribute { exists $_[0]->{attributes}->{$_[1]} }
-sub get_attribute_list { keys %{ $_[0]->{attributes} } }
-sub get_attribute { $_[0]->{attributes}->{$_[1]} }
+ $self->{attributes}->{$name} = (@_ == 1) ? $_[0] : { @_ };
+}
sub _check_required_methods{
my($role, $class, $args, @other_roles) = @_;
}
}
- confess "'$role_name' requires the method '$method_name' to be implemented by '$class_name'"
+ $role->throw_error("'$role_name' requires the method '$method_name' to be implemented by '$class_name'")
unless $has_method;
}
}
my $role_name = $role->name;
my $class_name = $class->name;
- my $alias = $args->{alias};
+
+ my $alias = (exists $args->{alias} && !exists $args->{-alias}) ? $args->{alias} : $args->{-alias};
+ my $excludes = (exists $args->{excludes} && !exists $args->{-excludes}) ? $args->{excludes} : $args->{-excludes};
+
+ my %exclude_map;
+
+ if(defined $excludes){
+ if(ref $excludes){
+ %exclude_map = map{ $_ => undef } @{$excludes};
+ }
+ else{
+ $exclude_map{$excludes} = undef;
+ }
+ }
foreach my $method_name($role->get_method_list){
next if $method_name eq 'meta';
my $code = $role_name->can($method_name);
- if(do{ no strict 'refs'; defined &{$class_name . '::' . $method_name} }){
- # XXX what's Moose's behavior?
- }
- else{
- $class->add_method($method_name => $code);
+
+ if(!exists $exclude_map{$method_name}){
+ if(!$class->has_method($method_name)){
+ $class->add_method($method_name => $code);
+ }
}
if($alias && $alias->{$method_name}){
my $dstname = $alias->{$method_name};
- if(do{ no strict 'refs'; defined &{$class_name . '::' . $dstname} }){
- # XXX wat's Moose's behavior?
+
+ my $slot = do{ no strict 'refs'; \*{$class_name . '::' . $dstname} };
+ if(defined(*{$slot}{CODE}) && *{$slot}{CODE} != $code){
+ $class->throw_error("Cannot create a method alias if a local method of the same name exists");
}
else{
$class->add_method($dstname => $code);
my $modifiers = $role->{"${modifier_type}_method_modifiers"};
while(my($method_name, $modifier_codes) = each %{$modifiers}){
- foreach my $code(@{$modifier_codes}){
+ foreach my $code(ref($modifier_codes) eq 'ARRAY' ? @{$modifier_codes} : $modifier_codes){
$class->$add_modifier($method_name => $code);
}
}
my($self, $class, %args) = @_;
if ($class->isa('Mouse::Object')) {
- Carp::croak('Mouse does not support Application::ToInstance yet');
+ not_supported 'Application::ToInstance';
}
$self->_check_required_methods($class, \%args);
return;
}
-for my $modifier_type (qw/before after around override/) {
+for my $modifier_type (qw/before after around/) {
my $modifier = "${modifier_type}_method_modifiers";
my $add_method_modifier = sub {
push @{ $self->{$modifier}->{$method_name} ||= [] }, $method;
return;
};
+ my $has_method_modifiers = sub{
+ my($self, $method_name) = @_;
+ my $m = $self->{$modifier}->{$method_name};
+ return $m && @{$m} != 0;
+ };
my $get_method_modifiers = sub {
my ($self, $method_name) = @_;
return @{ $self->{$modifier}->{$method_name} ||= [] }
no strict 'refs';
*{ 'add_' . $modifier_type . '_method_modifier' } = $add_method_modifier;
+ *{ 'has_' . $modifier_type . '_method_modifiers' } = $has_method_modifiers;
*{ 'get_' . $modifier_type . '_method_modifiers' } = $get_method_modifiers;
}
+sub add_override_method_modifier{
+ my($self, $method_name, $method) = @_;
+
+ (!$self->has_method($method_name))\r
+ || $self->throw_error("Cannot add an override of method '$method_name' " .\r
+ "because there is a local version of '$method_name'");
+
+ $self->{override_method_modifiers}->{$method_name} = $method;
+}
+
+sub has_override_method_modifier {\r
+ my ($self, $method_name) = @_;\r
+ return exists $self->{override_method_modifiers}->{$method_name};\r
+}\r
+\r
+sub get_override_method_modifier {\r
+ my ($self, $method_name) = @_;\r
+ return $self->{override_method_modifiers}->{$method_name};\r
+}
+
+sub get_method_modifier_list {
+ my($self, $modifier_type) = @_;
+
+ return keys %{ $self->{$modifier_type . '_method_modifiers'} };
+}
+
# This is currently not passing all the Moose tests.
sub does_role {
my ($self, $role_name) = @_;
(defined $role_name)
- || confess "You must supply a role name to look for";
+ || $self->throw_error("You must supply a role name to look for");
# if we are it,.. then return true
return 1 if $role_name eq $self->name;
projects / gitmo/Mouse.git / blobdiff