class Jcompiler::Provider
  def initialize
    @context = nil
  end

  def object!(arg_name = nil, &block)
    pre_context = @context
    @context = []
    srcs, subst_src = if arg_name
                       [block.call(nil), "#{block.parameters[0][1]}=#{arg_name};"]
                     else
                       [block.call, '']
                     end
    @context = pre_context
    %{"{\#{#{subst_src}[#{srcs.join(',')}].join(',')}}"}
  end

  def array!(arg_name, &block)
    item_name = block.parameters[0][1].to_s
    src = block.call(nil)
    %{"[\#{#{arg_name}.map { |#{item_name}| #{src} }.join(',')}]"}
  end

  def number!(num)
    %{"#{num}"}
  end

  def method_missing(name, *args, &block)
    src = if block
            block.call
          else
            args[0]
          end
    @context << %{"\\"#{name}\\":\#{ActiveSupport::JSON.encode(#{src})}"}
  end

  protected

  def value!

  end
end