script.rb in scss-lint-0.10.0

- old
+ new
@@ -7,6 +7,42 @@
     # can safely override the behaviour to return the original name.
     def underscored_name
       @name
     end
   end
+
+  # When linting colors, it's convenient to be able to inspect the original
+  # color string. This adds an attribute to the Color to keep track of the
+  # original string and provides a method which the modified lexer can use to
+  # set it.
+  class Color
+    attr_accessor :original
+
+    def self.from_string(string)
+      rgb = string.scan(/^#(..?)(..?)(..?)$/).
+                   first.
+                   map { |hex| hex.ljust(2, hex).to_i(16) }
+
+      color = Color.new(rgb, false)
+      color.original = string
+      color
+    end
+  end
+
+  class Lexer
+    # We redefine the color lexer to store the original string with the created
+    # `Color` object so that we can inspect the original string before it is
+    # normalized.
+    #
+    # This is an adapted version from the original Sass source code.
+    def color
+      return unless color_string = scan(REGULAR_EXPRESSIONS[:color])
+
+      unless [4, 7].include?(color_string.length)
+        raise ::Sass::SyntaxError,
+              "Colors must have either three or six digits: '#{color_string}'"
+      end
+
+      [:color, Color.from_string(color_string)]
+    end
+  end
 end