# File lib/sass/tree/variable_node.rb, line 28 def _perform(environment) return [] if @guarded && !environment.var(@name).nil? val = @expr.perform(environment) if @expr.context == :equals && val.is_a?(Sass::Script::String) val = Sass::Script::String.new(val.value) end environment.set_var(@name, val) [] end