module Sass::Script::Value # A SassScript object representing a null value. class Callable < Base # Constructs a Callable value for use in SassScript. # # @param callable [Sass::Callable] The callable to be used when the # callable is called. def initialize(callable) super(callable) end def to_s(opts = {}) raise Sass::SyntaxError.new("#{to_sass} isn't a valid CSS value.") end def inspect to_sass end # @abstract def to_sass Sass::Util.abstract(self) end end end