ジンジャエールハッカーソンでの進捗

bf.rb

#coding:utf-8

class BrainFuck
  def set(src)
	@mark = 0
	@source = src
	@point = 0
	@mem = Array.new(3000,0)
  end

  def compile
	str = @source[@mark]
	case str
	when ">"
	  @point += 1
	when "<"
	  @point -= 1
	when "+"
	  @mem[@point] += 1
	when "-"
	  @mem[@point] -= 1
	when "."
	  print @mem[@point].chr
	when "["
	  if @mem[@point] == 0
		flag = 1
		while flag > 0
		  @mark += 1
		  case @source[@mark]
		  when "["
			flag += 1
		  when "]"
			flag -= 1
		  end
		end
	  end
	when "]"
	  if @mem[@point] != 0
		flag = 1
		while flag > 0
		  @mark -= 1
		  case @source[@mark]
		  when "["
			flag -= 1
		  when "]"
			flag += 1
		  end
		end
	  end
	end
	@mark += 1
  end

  def bfdo
	while @mark < @source.length
	  compile
	end 
  end
end


brainfuck = BrainFuck.new
line = gets
brainfuck.set(line)
brainfuck.bfdo