[Haml] Convert Haml::Helpers::ActionViewExtensions docs to YARD.

lib/haml/helpers.rb

@@ -1,5 +1,7 @@
+if defined?(ActionView)
   require 'haml/helpers/action_view_mods'
   require 'haml/helpers/action_view_extensions'
+end
 
 module Haml
   # This module contains various helpful methods to make it easier to do various tasks.

lib/haml/helpers/action_view_extensions.rb

@@ -1,6 +1,5 @@
 require 'haml/helpers/action_view_mods'
 
-if defined?(ActionView)
 module Haml
   module Helpers
     # This module contains various useful helper methods
@@ -12,7 +11,7 @@ if defined?(ActionView)
       # Returns a value for the "class" attribute
       # unique to this controller/action pair.
       # This can be used to target styles specifically at this action or controller.
-        # For example, if the current action were EntryController#show,
+      # For example, if the current action were `EntryController#show`,
       #
       #     %div{:class => page_class} My Div
       #
@@ -20,8 +19,7 @@ if defined?(ActionView)
       #
       #     <div class="entry show">My Div</div>
       #
-        # Then, in a stylesheet
+      # Then, in a stylesheet (shown here as {Sass}),
-        # (shown here as Sass),
       # you could refer to this specific action:
       #
       #     .entry.show
@@ -32,14 +30,11 @@ if defined?(ActionView)
       #     .entry
       #       :color #00f
       #
+      # @return [String] The class name for the current page
       def page_class
         controller.controller_name + " " + controller.action_name
       end
-
-        # :stopdoc:
       alias_method :generate_content_class_names, :page_class
-        # :startdoc:
-      end
     end
   end
 end

lib/haml/helpers/action_view_mods.rb

@@ -1,4 +1,3 @@
-if defined?(ActionView) and not defined?(Merb::Plugins)
 module ActionView
   class Base
     def render_with_haml(*args, &block)
@@ -173,5 +172,3 @@ if defined?(ActionView) and not defined?(Merb::Plugins)
     end
   end
 end
-end
-