gistfile1

module BCCode

  def self.build(&block)
    builder = Bc.new
    builder.instance_eval(&block)
    builder.codes
  end

  class Bc
    
    attr_reader :code, :codes

    def initialize
      @code = @codes = ""
    end

    def method_missing(name)
      table = {
		:plus => "+",
		:minus => "-",
		:div => "/",
		:times => "*",
		#:modulos => "%"
	      }
      @code += table.has_key?(name)? table[name] : name.to_s
      self
    end

    def number(n)
      @code += n.to_s
      self
    end

    def set(variable, value)
      @code += variable + "=" + value
      self
    end

    def stop
      build_code
    end

    private
    def build_code
      @codes += code + "\n"
      @code = ""
      #@codes = eval(@codes)
    end
  end
end

if $0 == __FILE__
  code = ARGV[0].to_s.gsub(/\"/, "")
  block = Proc.new { instance_eval(code) }
  puts BCCode::build(&block)
end

puts BCCode.build { number(4).plus.number(2).stop }