document.py 文件源码

def __set_gj_flag_sub_field(self, instance, fld, cur_depth):
        """Set $$good_json$$ flag to subfield."""
        from .fields import FollowReferenceField

        def set_good_json(fld):
            setattr(fld, "$$good_json$$", True)
            setattr(fld, "$$cur_depth$$", cur_depth)

        @singledispatch
        def set_flag_recursive(fld, instance):
            set_good_json(fld)

        @set_flag_recursive.register(db.ListField)
        def set_flag_list(fld, instance):
            set_good_json(fld.field)

        @set_flag_recursive.register(db.EmbeddedDocumentField)
        def set_flag_emb(fld, instance):
            if isinstance(instance, Helper):
                instance.begin_goodjson(cur_depth)

        @set_flag_recursive.register(FollowReferenceField)
        def set_flag_self(fld, instance):
            set_good_json(fld)

        set_flag_recursive(fld, instance)