Implement Mouse::Util::TypeConstraints::register_type_constraint()

[gitmo/Mouse.git] / lib / Mouse / Util / TypeConstraints.pm

diff --git a/lib/Mouse/Util/TypeConstraints.pm b/lib/Mouse/Util/TypeConstraints.pm
index 3915dc7..3289de6 100644 (file)
--- a/lib/Mouse/Util/TypeConstraints.pm
+++ b/lib/Mouse/Util/TypeConstraints.pm
@@ -17,6 +17,7 @@ Mouse::Exporter->setup_import_methods(
         coerce
 
         find_type_constraint
+        register_type_constraint
     )],
 );
 
@@ -82,13 +83,13 @@ $TYPE{HashRef} {constraint_generator} = \&_parameterize_HashRef_for;
 
 # sugars
 
-sub as          ($) { (as          => $_[0]) }
-sub where       (&) { (where       => $_[0]) }
-sub message     (&) { (message     => $_[0]) }
-sub optimize_as (&) { (optimize_as => $_[0]) }
+sub as          ($) { (as          => $_[0]) } ## no critic
+sub where       (&) { (where       => $_[0]) } ## no critic
+sub message     (&) { (message     => $_[0]) } ## no critic
+sub optimize_as (&) { (optimize_as => $_[0]) } ## no critic
 
 sub from    { @_ }
-sub via (&) { $_[0] }
+sub via (&) { $_[0] } ## no critic
 
 # type utilities
 
@@ -227,7 +228,8 @@ sub duck_type {
     @methods = (@_ == 1 && ref($_[0]) eq 'ARRAY') ? @{$_[0]} : @_;
 
     # DuckType
-    return _create_type 'type', $name => (
+    return _create_type 'subtype', $name => (
+        as           => 'Object',
         optimized_as => Mouse::Util::generate_can_predicate_for(\@methods),
     );
 }
@@ -242,7 +244,8 @@ sub enum {
     %valid = map{ $_ => undef } (@_ == 1 && ref($_[0]) eq 'ARRAY' ? @{$_[0]} : @_);
 
     # EnumType
-    return _create_type 'type', $name => (
+    return _create_type 'subtype', $name => (
+        as            => 'Str',
         optimized_as  => sub{ defined($_[0]) && !ref($_[0]) && exists $valid{$_[0]} },
     );
 }
@@ -365,6 +368,16 @@ sub find_type_constraint {
     return $TYPE{$spec};
 }
 
+sub register_type_constraint {
+    my($constraint) = @_;
+    Carp::croak("No type supplied / type is not a valid type constraint")
+        unless Mouse::Util::is_a_type_constraint($constraint);
+    my $name = $constraint->name;
+    Carp::croak("can't register an unnamed type constraint")
+        unless defined $name;
+    return $TYPE{$name} = $constraint;
+}
+
 sub find_or_parse_type_constraint {
     my($spec) = @_;
     return $spec if Mouse::Util::is_a_type_constraint($spec);
@@ -404,7 +417,7 @@ Mouse::Util::TypeConstraints - Type constraint system for Mouse
 
 =head1 VERSION
 
-This document describes Mouse version 0.50_07
+This document describes Mouse version 0.62
 
 =head2 SYNOPSIS