types.py 文件源码

def to_rain(cls, val):
    if val is None:
      return cls.new(typi.null, 0, 0, cls.null)
    elif val is False:
      return cls.new(typi.bool, 0, 0, cls.null)
    elif val is True:
      return cls.new(typi.bool, 0, 1, cls.null)
    elif isinstance(val, int):
      return cls.new(typi.int, 0, val, cls.null)
    elif isinstance(val, float):
      raw = struct.pack('d', val)
      intrep = struct.unpack('Q', raw)[0]
      return cls.new(typi.float, 0, intrep, cls.null)
    elif isinstance(val, str):
      str_p = ct.create_string_buffer(val.encode('utf-8'))
      cls._saves_.append(str_p)
      return cls.new(typi.str, len(val), ct.cast(str_p, ct.c_void_p).value, cls.null)

    raise Exception("Can't convert value {!r} to Rain".format(val))