package Mouse::Meta::TypeConstraint;
use Mouse::Util qw(:meta); # enables strict and warnings
-use Scalar::Util ();
sub new {
my $class = shift;
$args{name} = '__ANON__' if !defined $args{name};
- if($args{parent}) {
+ if(defined $args{parent}) {
%args = (%{$args{parent}}, %args);
# a child type must not inherit 'compiled_type_constraint'
# and 'hand_optimized_type_constraint' from the parent
delete $args{compiled_type_constraint};
delete $args{hand_optimized_type_constraint};
+ if(defined(my $parent_tp = $args{parent}{type_parameter})) {
+ delete $args{type_parameter} if $parent_tp == $args{type_parameter};
+ }
}
my $check;
sub _add_type_coercions { # ($self, @pairs)
my $self = shift;
+ if(exists $self->{type_constraints}){ # union type
+ $self->throw_error(
+ "Cannot add additional type coercions to Union types '$self'");
+ }
+
my $coercions = ($self->{coercion_map} ||= []);
my %has = map{ $_->[0] => undef } @{$coercions};
push @{$coercions}, [ $type => $action ];
}
- # compile
- if(exists $self->{type_constraints}){ # union type
- $self->throw_error(
- "Cannot add additional type coercions to Union types");
- }
- else{
- $self->_compile_type_coercion();
- }
+ $self->_compile_type_coercion();
return;
}
sub coerce {
my $self = shift;
-
- my $coercion = $self->_compiled_type_coercion;
- if(!$coercion){
- $self->throw_error("Cannot coerce without a type coercion");
- }
-
return $_[0] if $self->check(@_);
+ my $coercion = $self->{_compiled_type_coercion}
+ or $self->throw_error("Cannot coerce without a type coercion");
return $coercion->(@_);
}
}
}
-sub is_a_type_of{
+sub is_a_type_of {
my($self, $other) = @_;
# ->is_a_type_of('__ANON__') is always false
}
# See also Moose::Meta::TypeConstraint::Parameterizable
-sub parameterize{
+sub parameterize {
my($self, $param, $name) = @_;
if(!ref $param){
}
sub _as_string { $_[0]->name } # overload ""
-sub _identity { Scalar::Util::refaddr($_[0]) } # overload 0+
+sub _identity; # overload 0+
sub _unite { # overload infix:<|>
my($lhs, $rhs) = @_;
=head1 VERSION
-This document describes Mouse version 0.72
+This document describes Mouse version 0.81
=head1 DESCRIPTION