module Inch
  module Language
    module Ruby
      module Evaluation
        module Role
          # Roles assigned to all objects
          module Object
            # Role assigned to objects that are aliases.
            #
            class Alias < Base
              applicable_if :alias?
              # not sure about this yet,
              # but aliases should not show up high in the reports
              priority      -7
            end

            # Role assigned to objects with a describing comment (docstring)
            class WithDoc < Base
              applicable_if :has_doc?
            end

            # Role assigned to objects without a docstring
            class WithoutDoc < Missing
              applicable_unless :has_doc?

              def suggestion
                "Add a comment describing the #{object_type}"
              end
            end

            # Tagged means tagged in an unconsidred way, i.e. YARD tags not
            # considered by Inch. Since these tags are parsed from the docstring
            # the object seems undocumented to Inch.
            class Tagged < Base
              applicable_if :has_unconsidered_tags?
              priority      -1
            end

            # Role assigned to objects explicitly or implicitly tagged not to be
            # documented.
            #
            # @see CodeObject::NodocHelper
            class TaggedAsNodoc < Base
              applicable_if :nodoc?
              priority      -7
            end

            # Role assigned to objects explicitly or implicitly tagged to be part
            # of an API. If the API is 'private'/'internal' TaggedAsInternalAPI is
            # assigned instead.
            class TaggedAsAPI < Base
              applicable_if :api_tag?
            end

            # Role assigned to objects explicitly or implicitly tagged to be part
            # of a private API.
            class TaggedAsInternalAPI < Base
              applicable_if :tagged_as_internal_api?
              priority      -5
            end

            # Role assigned to objects explicitly or implicitly tagged to be
            # private.
            #
            # @see CodeObject::NodocHelper
            class TaggedAsPrivate < Base
              applicable_if :tagged_as_private?
              priority      -5
            end

            # Role assigned to objects declared in the top-level namespace
            class InRoot < Base
              applicable_if :in_root?
              priority      +3
            end

            # Role assigned to public objects
            class Public < Base
              applicable_if :public?
              priority      +2
            end

            # Role assigned to protected objects
            class Protected < Base
              applicable_if :protected?
              priority      +1
            end

            # Role assigned to private objects
            class Private < Base
              applicable_if :private?
              priority      -2
            end

            # Role assigned to objects with a single code example
            class WithCodeExample < Base
              applicable_if do |o|
                o.has_code_example? && !o.has_multiple_code_examples?
              end
            end

            # Role assigned to objects with multiple code examples
            class WithMultipleCodeExamples < Base
              applicable_if :has_multiple_code_examples?
            end

            # Role assigned to objects without a code example
            class WithoutCodeExample < Missing
              applicable_unless :has_code_example?

              def suggestion
                "Add a code example (optional)"
              end
            end
          end
        end
      end
    end
  end
end