# -*- coding:utf-8 -*-
# Author: hankcs
# Date: 2020-12-16 22:24
from hanlp_common.reflection import str_to_type, classpath_of
[docs]class Configurable(object):
[docs] @staticmethod
def from_config(config: dict, **kwargs):
"""Build an object from config.
Args:
config: A ``dict`` holding parameters for its constructor. It has to contain a `classpath` key,
which has a classpath str as its value. ``classpath`` will determine the type of object
being deserialized.
kwargs: Arguments not used.
Returns: A deserialized object.
"""
cls = config.get('classpath', None)
assert cls, f'{config} doesn\'t contain classpath field'
cls = str_to_type(cls)
deserialized_config = dict(config)
for k, v in config.items():
if isinstance(v, dict) and 'classpath' in v:
deserialized_config[k] = Configurable.from_config(v)
if cls.from_config == Configurable.from_config:
deserialized_config.pop('classpath')
return cls(**deserialized_config)
else:
return cls.from_config(deserialized_config)
[docs]class AutoConfigurable(Configurable):
@property
def config(self) -> dict:
"""
The config of this object, which are public properties. If any properties needs to be excluded from this config,
simply declare it with prefix ``_``.
"""
return dict([('classpath', classpath_of(self))] +
[(k, v.config if hasattr(v, 'config') else v)
for k, v in self.__dict__.items() if
not k.startswith('_')])
def __repr__(self) -> str:
return repr(self.config)
