mapped_struct.py 文件源码

def register_schema(cls, typ, schema, typecode):
        if typecode is not None and typ in cls.TYPE_CODES:
            if cls.TYPE_CODES[typ] != typecode or cls.OBJ_PACKERS[typecode][2].schema is not schema:
                raise ValueError("Registering different types with same typecode %r: %r" % (cls.TYPE_CODES[typ], typ))
            return cls.OBJ_PACKERS[typecode][2]

        if isinstance(typ, mapped_object_with_schema):
            packable = typ
        else:
            packable = mapped_object_with_schema(schema)
        class SchemaBufferProxyProperty(GenericBufferProxyProperty):
            typ = packable
        if typecode is not None:
            cls.TYPE_CODES[typ] = typecode
            cls.TYPE_CODES[packable] = typecode
            cls.OBJ_PACKERS[typecode] = (packable.pack_into, packable.unpack_from, packable)
        TYPES[typ] = packable
        TYPES[packable] = packable
        PROXY_TYPES[typ] = SchemaBufferProxyProperty
        PROXY_TYPES[packable] = SchemaBufferProxyProperty
        return packable