return $predicate;
}
+sub generate_can_predicate_for {
+ my($methods_ref, $name) = @_;
+
+ my @methods = @{$methods_ref};
+
+ my $predicate = sub{
+ my($instance) = @_;
+ if(Scalar::Util::blessed($instance)){
+ foreach my $method(@methods){
+ if(!$instance->can($method)){
+ return 0;
+ }
+ }
+ return 1;
+ }
+ return 0;
+ };
+
+ if(defined $name){
+ no strict 'refs';
+ *{ caller() . '::' . $name } = $predicate;
+ return;
+ }
+
+ return $predicate;
+}
package
Mouse::Util::TypeConstraints;
sub Value { defined($_[0]) && !ref($_[0]) }
sub Num { !ref($_[0]) && looks_like_number($_[0]) }
sub Int { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }
-sub Str { defined($_[0]) && !ref($_[0]) }
+sub Str {
+ my($value) = @_;
+ return defined($value) && ref(\$value) eq 'SCALAR';
+}
sub Ref { ref($_[0]) }
-sub ScalarRef { ref($_[0]) eq 'SCALAR' }
+sub ScalarRef {
+ my($value) = @_;
+ return ref($value) eq 'SCALAR'
+}
sub ArrayRef { ref($_[0]) eq 'ARRAY' }
sub HashRef { ref($_[0]) eq 'HASH' }
sub CodeRef { ref($_[0]) eq 'CODE' }
sub GlobRef { ref($_[0]) eq 'GLOB' }
sub FileHandle {
- openhandle($_[0]) || (blessed($_[0]) && $_[0]->isa("IO::Handle"))
+ return openhandle($_[0]) || (blessed($_[0]) && $_[0]->isa("IO::Handle"))
}
sub Object { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }
return;
}
+sub is_immutable { $_[0]->{is_immutable} }
package
Mouse::Meta::Role;
sub has_documentation { exists $_[0]->{documentation} }
+sub _process_options{
+ my($class, $name, $args) = @_;
+
+ # taken from Class::MOP::Attribute::new
+
+ defined($name)
+ or $class->throw_error('You must provide a name for the attribute');
+
+ if(!exists $args->{init_arg}){
+ $args->{init_arg} = $name;
+ }
+
+ # 'required' requires eigher 'init_arg', 'builder', or 'default'
+ my $can_be_required = defined( $args->{init_arg} );
+
+ if(exists $args->{builder}){
+ # XXX:
+ # Moose refuses a CODE ref builder, but Mouse doesn't for backward compatibility
+ # This feature will be changed in a future. (gfx)
+ $class->throw_error('builder must be a defined scalar value which is a method name')
+ #if ref $args->{builder} || !defined $args->{builder};
+ if !defined $args->{builder};
+
+ $can_be_required++;
+ }
+ elsif(exists $args->{default}){
+ if(ref $args->{default} && ref($args->{default}) ne 'CODE'){
+ $class->throw_error("References are not allowed as default values, you must "
+ . "wrap the default of '$name' in a CODE reference (ex: sub { [] } and not [])");
+ }
+ $can_be_required++;
+ }
+
+ if( $args->{required} && !$can_be_required ) {
+ $class->throw_error("You cannot have a required attribute ($name) without a default, builder, or an init_arg");
+ }
+
+ # taken from Mouse::Meta::Attribute->new and ->_process_args
+
+ if(exists $args->{is}){
+ my $is = $args->{is};
+
+ if($is eq 'ro'){
+ $args->{reader} ||= $name;
+ }
+ elsif($is eq 'rw'){
+ if(exists $args->{writer}){
+ $args->{reader} ||= $name;
+ }
+ else{
+ $args->{accessor} ||= $name;
+ }
+ }
+ elsif($is eq 'bare'){
+ # do nothing, but don't complain (later) about missing methods
+ }
+ else{
+ $is = 'undef' if !defined $is;
+ $class->throw_error("I do not understand this option (is => $is) on attribute ($name)");
+ }
+ }
+
+ my $tc;
+ if(exists $args->{isa}){
+ $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_isa_type_constraint($args->{isa});
+ }
+ elsif(exists $args->{does}){
+ $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_does_type_constraint($args->{does});
+ }
+ $tc = $args->{type_constraint};
+
+ if($args->{coerce}){
+ defined($tc)
+ || $class->throw_error("You cannot have coercion without specifying a type constraint on attribute ($name)");
+
+ $args->{weak_ref}
+ && $class->throw_error("You cannot have a weak reference to a coerced value on attribute ($name)");
+ }
+
+ if ($args->{lazy_build}) {
+ exists($args->{default})
+ && $class->throw_error("You can not use lazy_build and default for the same attribute ($name)");
+
+ $args->{lazy} = 1;
+ $args->{builder} ||= "_build_${name}";
+ if ($name =~ /^_/) {
+ $args->{clearer} ||= "_clear${name}";
+ $args->{predicate} ||= "_has${name}";
+ }
+ else {
+ $args->{clearer} ||= "clear_${name}";
+ $args->{predicate} ||= "has_${name}";
+ }
+ }
+
+ if ($args->{auto_deref}) {
+ defined($tc)
+ || $class->throw_error("You cannot auto-dereference without specifying a type constraint on attribute ($name)");
+
+ ( $tc->is_a_type_of('ArrayRef') || $tc->is_a_type_of('HashRef') )
+ || $class->throw_error("You cannot auto-dereference anything other than a ArrayRef or HashRef on attribute ($name)");
+ }
+
+ if (exists $args->{trigger}) {
+ ('CODE' eq ref $args->{trigger})
+ || $class->throw_error("Trigger must be a CODE ref on attribute ($name)");
+ }
+
+ if ($args->{lazy}) {
+ (exists $args->{default} || defined $args->{builder})
+ || $class->throw_error("You cannot have lazy attribute ($name) without specifying a default value for it");
+ }
+
+ return;
+}
+
+
package
Mouse::Meta::TypeConstraint;
my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH')
|| next;
- $self->$demolish();
+ $self->$demolish($Mouse::Util::in_global_destruction);
}
};
$@;
die $e if $e; # rethrow
}
+sub BUILDALL {
+ my $self = shift;
+
+ # short circuit
+ return unless $self->can('BUILD');
+
+ for my $class (reverse $self->meta->linearized_isa) {
+ my $build = Mouse::Util::get_code_ref($class, 'BUILD')
+ || next;
+
+ $self->$build(@_);
+ }
+ return;
+}
+
+sub DEMOLISHALL;
+*DEMOLISHALL = \&DESTROY;
+
1;
__END__
=head1 VERSION
-This document describes Mouse version 0.42
+This document describes Mouse version 0.50
=head1 SEE ALSO
projects / gitmo/Mouse.git / blobdiff