Remove casts

Library/Homebrew/sorbet/tapioca/compilers/attrables.rb

@@ -12,9 +12,7 @@ module Tapioca
       ConstantType = type_member { { fixed: Module } }
 
       sig { override.returns(T::Enumerable[Module]) }
-      def self.gather_constants
+      def self.gather_constants = Homebrew::Tapioca::Utils.named_objects_with_module(Attrable)
-        ObjectSpace.each_object(Attrable).map { |obj| obj.name.nil? ? obj.attached_object : obj }
-      end
 
       sig { override.void }
       def decorate

Library/Homebrew/sorbet/tapioca/compilers/forwardables.rb

@@ -17,22 +17,12 @@ module Tapioca
 
       sig { override.returns(T::Enumerable[Module]) }
       def self.gather_constants
-        objects = T.cast(ObjectSpace.each_object(Forwardable), T::Enumerator[Module])
+        Homebrew::Tapioca::Utils.named_objects_with_module(Forwardable).reject do |obj|
-        objects.map { |obj| named_object(obj) }.uniq.reject do |obj|
           # Avoid duplicate stubs for forwardables that are defined in vendored gems
           Object.const_source_location(T.must(obj.name))&.first&.include?("vendor/bundle/ruby")
         end
       end
 
-      sig { params(obj: Module).returns(Module) }
-      def self.named_object(obj)
-        if obj.is_a?(Class) && obj.name.nil?
-          T.cast(obj.attached_object, Module)
-        else
-          obj
-        end
-      end
-
       sig { override.void }
       def decorate
         root.create_path(constant) do |klass|

Library/Homebrew/sorbet/tapioca/utils.rb

@@ -4,6 +4,17 @@
 module Homebrew
   module Tapioca
     module Utils
+      sig { params(klass: T::Class[T.anything]).returns(Module) }
+      def self.named_object_for(klass)
+        return klass if klass.name
+
+        attached_object = klass.attached_object
+        case attached_object
+        when Module then attached_object
+        else raise "Unsupported attached object for: #{klass}"
+        end
+      end
+
       # @param class_methods [Boolean] whether to get class methods or instance methods
       # @return the `module` methods that are defined in the given file
       sig {
@@ -18,6 +29,17 @@ module Homebrew
         end
         methods.select { _1.source_location&.first&.end_with?(file_name) }
       end
+
+      sig { params(mod: Module).returns(T::Array[Module]) }
+      def self.named_objects_with_module(mod)
+        ObjectSpace.each_object(mod).map do |obj|
+          case obj
+          when Class then named_object_for(obj)
+          when Module then obj
+          else raise "Unsupported object: #{obj}"
+          end
+        end.uniq
+      end
     end
   end
 end