# File lib/pry/default_commands/introspection.rb, line 324
          def extract_file_and_line
            if @method
              if @method.source_type == :c
                raise CommandError, "Can't edit a C method."
              else
                [@method.source_file, @method.source_line]
              end
            else
              [target.eval('__FILE__'), target.eval('__LINE__')]
            end
          end