Brainfuck interpreter in Ruby's Regexp - 兼雑記Ruby ã®æ£è¦è¡¨ç¾ã ã‘㧠Brainfuck インタプリタを作るã“ã¨ãŒã§ãã¾ã—ãŸã€‚æ£è¦è¡¨ç¾ã®å®Ÿè¡Œã¯ =~ ã ã‘ãªã®ã§ã€ãƒ«ãƒ¼ãƒ—ãªã©ã‚‚æ£è¦è¡¨ç¾ã®å†…部ã§å®Ÿè¡Œã—ã¦ã¾ã™ã€‚ https://github.com/shinh/hack/blob/master/bf_rb_reg/bf.rb ã¤ã¾ã‚Šã©ã†ã„ã†ã“ã¨ãŒã§ãã‚‹ã‹ã¨ã„ã†ã¨ã€ BF_REG ã¨ã„ㆠRegexp 㨠BF_SUFFIX ã¨ã„ã†æ–‡å—列定数ãŒã‚ã£ã¦ã€ bf ã¨ã„ã†æ–‡å—列ã«æ ¼ç´ã•ã‚ŒãŸ Brainfuck ã®ã‚³ãƒ¼ãƒ‰ã‚’ BF_REG =~ bf + BF_SUFFIX ã§å®Ÿè¡Œã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚出力㯠$~['o0'], $~['o1'], ... ã«å…¥ã£ã¦ã„ã‚‹ã®ã§ã€ output = '' 256.times do |i| o = $~["o#{i}"] break if !o output += o end çš„ãªã‚³ãƒ¼ãƒ‰ã§å–り出ã™ã“ã¨ãŒã§ã
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