# File lib/parser/ruby22.rb, line 4889
def _reduce_312(val, _values, result)
                      *when_bodies, (else_t, else_body) = *val[3]

                      result = @builder.case(val[0], val[1],
                                             when_bodies, else_t, else_body,
                                             val[4])
                    
    result
end