lib/vedeu/colours/colour.rb in vedeu-0.8.3 vs lib/vedeu/colours/colour.rb in vedeu-0.8.4

@@ -72,19 +72,19 @@
         }
       end
 
       # @return [Vedeu::Colours::Background]
       def background
-        @_background ||= Vedeu::Colours::Background.coerce(@background)
+        Vedeu::Colours::Background.coerce(@background)
       end
 
       # Converts the value into a Vedeu::Colours::Background.
       #
       # @param value [String]
       # @return [Vedeu::Colours::Foreground]
       def background=(value)
-        @_background = @background = Vedeu::Colours::Background.coerce(value)
+        @background = Vedeu::Colours::Background.coerce(value)
       end
 
       # An object is equal when its values are the same.
       #
       # @param other [void]
@@ -95,18 +95,25 @@
       end
       alias_method :==, :eql?
 
       # @return [Vedeu::Colours::Foreground]
       def foreground
-        @_foreground ||= Vedeu::Colours::Foreground.coerce(@foreground)
+        Vedeu::Colours::Foreground.coerce(@foreground)
       end
 
       # Converts the value into a Vedeu::Colours::Foreground.
       #
       # @param value [String]
       # @return [Vedeu::Colours::Foreground]
       def foreground=(value)
-        @_foreground = @foreground = Vedeu::Colours::Foreground.coerce(value)
+        @foreground = Vedeu::Colours::Foreground.coerce(value)
+      end
+
+      # @return [String]
+      def to_ast
+        [foreground.to_ast, background.to_ast].reject do |value|
+          absent?(value)
+        end.join(' ')
       end
 
       # @return [Hash<Symbol => Hash<Symbol => String>>]
       def to_h
         {