use Class::MOP;
-use Carp 'confess';
+use Carp ();
use Scalar::Util 'weaken', 'blessed';
our $VERSION = '0.50';
default => sub { [] }
));
+__PACKAGE__->meta->add_attribute('error_builder' => (
+ reader => 'error_builder',
+ default => 'confess',
+));
+
+__PACKAGE__->meta->add_attribute('error_class' => (
+ reader => 'error_class',
+));
+
+
sub initialize {
my $class = shift;
my $pkg = shift;
my ($self, $package_name, %options) = @_;
(ref $options{roles} eq 'ARRAY')
- || confess "You must pass an ARRAY ref of roles"
+ || $self->throw_error("You must pass an ARRAY ref of roles", data => $options{roles})
if exists $options{roles};
my $class = $self->SUPER::create($package_name, %options);
sub add_role {
my ($self, $role) = @_;
(blessed($role) && $role->isa('Moose::Meta::Role'))
- || confess "Roles must be instances of Moose::Meta::Role";
+ || $self->throw_error("Roles must be instances of Moose::Meta::Role", data => $role);
push @{$self->roles} => $role;
}
sub does_role {
my ($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");
foreach my $class ($self->class_precedence_list) {
next unless $class->can('meta') && $class->meta->can('roles');
foreach my $role (@{$class->meta->roles}) {
sub excludes_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");
foreach my $class ($self->class_precedence_list) {
next unless $class->can('meta');
# NOTE:
my ($self, $name, $method, $_super_package) = @_;
(!$self->has_method($name))
- || confess "Cannot add an override method if a local method is already present";
+ || $self->throw_error("Cannot add an override method if a local method is already present");
$self->add_method($name => Moose::Meta::Method::Overriden->new(
method => $method,
sub add_augment_method_modifier {
my ($self, $name, $method) = @_;
(!$self->has_method($name))
- || confess "Cannot add an augment method if a local method is already present";
+ || $self->throw_error("Cannot add an augment method if a local method is already present");
$self->add_method($name => Moose::Meta::Method::Augmented->new(
method => $method,
my ($self, $attr_name, %options) = @_;
my $inherited_attr = $self->find_attribute_by_name($attr_name);
(defined $inherited_attr)
- || confess "Could not find an attribute by the name of '$attr_name' to inherit from";
+ || $self->throw_error("Could not find an attribute by the name of '$attr_name' to inherit from", data => $attr_name);
if ($inherited_attr->isa('Moose::Meta::Attribute')) {
return $inherited_attr->clone_and_inherit_options(%options);
}
wrapped => {
add_package_symbol => sub {
my $original = shift;
- confess "Cannot add package symbols to an immutable metaclass"
+ $self->throw_error("Cannot add package symbols to an immutable metaclass")
unless (caller(2))[3] eq 'Class::MOP::Package::get_package_symbol';
goto $original->body;
},
);
}
+#{ package Moose::Meta::Class::ErrorRoutines; %Carp::Internal?
+
+our $level;
+
+sub throw_error {
+ my ( $self, @args ) = @_;
+ local $level = 1;
+ $self->raise_error($self->create_error(@args));
+}
+
+sub raise_error {
+ my ( $self, @args ) = @_;
+ die @args;
+}
+
+sub create_error {
+ my ( $self, @args ) = @_;
+
+ if ( @args % 2 == 1 ) {
+ unshift @args, "message";
+ }
+
+ my %args = @args;
+
+ local $level = $level + 1;
+
+ if ( my $class = $args{class} || ( ref $self && $self->error_class ) ) {
+ return $self->create_error_object( %args, class => $class );
+ } else {
+ my $builder = $args{builder} || ( ref($self) ? $self->error_builder : "confess" );
+
+ my $builder_method = ( ( ref($builder) && ref($builder) eq 'CODE' )
+ ? $builder
+ : ( $self->can("create_error_$builder") || "create_error_confess" ));
+
+ return $self->$builder_method(%args);
+ }
+}
+
+sub create_error_object {
+ my ( $self, %args ) = @_;
+
+ my $class = delete $args{class};
+
+ $class->new(
+ metaclass => $self,
+ %args,
+ depth => ( ($args{depth} || 1) + ( $level + 1 ) ),
+ );
+}
+
+sub create_error_croak {
+ my ( $self, @args ) = @_;
+ $self->_create_error_carpmess( @args );
+}
+
+sub create_error_confess {
+ my ( $self, @args ) = @_;
+ $self->_create_error_carpmess( @args, longmess => 1 );
+}
+
+sub _create_error_carpmess {
+ my ( $self, %args ) = @_;
+
+ my $carp_level = $level + 1 + ( $args{depth} || 1 );
+
+ local $Carp::CarpLevel = $carp_level; # $Carp::CarpLevel + $carp_level ?
+ local $Carp::MaxArgNums = 20; # default is 8, usually we use named args which gets messier though
+
+ my @args = exists $args{message} ? $args{message} : ();
+
+ if ( $args{longmess} ) {
+ return Carp::longmess(@args);
+ } else {
+ return Carp::shortmess(@args);
+ }
+}
+
1;
__END__
This method does the same thing as L<Class::MOP::Class::add_attribute>, but adds
support for taking the C<$params> as a HASH ref.
+=item B<throw_error $message, %extra>
+
+Throws the error created by C<create_error> using C<raise_error>
+
+=item B<create_error $message, %extra>
+
+Creates an error message or object.
+
+The default behavior is C<create_error_confess>.
+
+If C<error_class> is set uses C<create_error_object>. Otherwise uses
+C<error_builder> (a code reference or variant name), and calls the appropriate
+C<create_error_$builder> method.
+
+=item B<error_builder $builder_name>
+
+Get or set the error builder. Defaults to C<confess>.
+
+=item B<error_class $class_name>
+
+Get or set the error class. Has no default.
+
+=item B<create_error_confess %args>
+
+Creates an error using L<Carp/longmess>
+
+=item B<create_error_croak %args>
+
+Creates an error using L<Carp/shortmess>
+
+=item B<create_error_object %args>
+
+Calls C<new> on the C<class> parameter in C<%args>. Usable with C<error_class>
+to support custom error objects for your meta class.
+
+=item B<raise_error $error>
+
+Dies with an error object or string.
+
=back
=head1 BUGS
projects / gitmo/Moose.git / commitdiff