int fibonaccit(int n) a = 0 b = 1 while( n > 1 ) tmp = a a = b b = tmp + b puts(b) n = n - 1 end end -- -- -- s(:expressions, s(:function, :int, s(:name, :fibonaccit), s(:parameters, s(:field, :int, :n)), s(:expressions, s(:assign, s(:name, :a), s(:int, 0)), s(:assign, s(:name, :b), s(:int, 1)), s(:while, s(:condition, s(:operator, ">", s(:name, :n), s(:int, 1))), s(:expressions, s(:assign, s(:name, :tmp), s(:name, :a)), s(:assign, s(:name, :a), s(:name, :b)), s(:assign, s(:name, :b), s(:operator, "+", s(:name, :tmp), s(:name, :b))), s(:call, s(:name, :puts), s(:arguments, s(:name, :b))), s(:assign, s(:name, :n), s(:operator, "-", s(:name, :n), s(:int, 1))))))))