module MasterView
  module Directives

    #outputs a block around the text tags, if left bracket count is higher than right
    #assume that the end is a right bracket otherwise use end
    class Block < MasterView::DirectiveBase
      def priority
        DirectivePriorities::MediumHigh
      end

      def stag(directive_call_stack)
        count_left_brackets = attr_value.scan( /\{/ ).size
        count_right_brackets = attr_value.scan( /\}/ ).size
        @end_block = (count_left_brackets > count_right_brackets) ? '}' : 'end'

        ret = []
        ret << erb(attr_value)
        ret << directive_call_stack.render
      end

      def etag(directive_call_stack)
        ret = []
        ret << directive_call_stack.render
        ret << erb(@end_block)
      end

    end
  end
end