#! /usr/bin/env python3
# -*- coding: utf-8 -*-
# File : container.py
# Author : Jiayuan Mao
# Email : maojiayuan@gmail.com
# Date : 01/18/2018
#
# Qinsheng Zhang modified based on Jacinle.
# Distributed under terms of the MIT license.
import copy
import collections
from .printing import kvformat, kvprint
__all__ = ["G", "g", "GView", "SlotAttrObject", "OrderedSet"]
[docs]class G(dict):
def __getattr__(self, k):
if k not in self:
raise AttributeError
return self[k]
def __setattr__(self, k, v):
self[k] = v
def __delattr__(self, k):
del self[k]
[docs] def print(self, sep=": ", end="\n", file=None):
return kvprint(self, sep=sep, end=end, file=file)
g = G()
[docs]class GView(object):
def __init__(self, dict_=None):
if dict_ is None:
dict_ = dict()
object.__setattr__(self, "_dict", dict_)
def __getattr__(self, k):
if k not in self.raw():
raise AttributeError
return self.raw()[k]
def __setattr__(self, k, v):
self.raw()[k] = v
def __delattr__(self, k):
del self.raw()[k]
def __getitem__(self, k):
return self.raw()[k]
def __setitem__(self, k, v):
self.raw()[k] = v
def __delitem__(self, k):
del self.raw()[k]
def __contains__(self, k):
return k in self.raw()
def __iter__(self):
return iter(self.raw().items())
[docs] def raw(self):
return object.__getattribute__(self, "_dict")
[docs] def update(self, other):
self.raw().update(other)
[docs] def copy(self):
return GView(self.raw().copy())
[docs] def print(self, sep=": ", end="\n", file=None):
return kvprint(self.raw(), sep=sep, end=end, file=file)
[docs]class SlotAttrObject(object):
def __init__(self, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)
[docs] def update(self, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)
def __setattr__(self, k, v):
assert not k.startswith("_")
if k not in type(self).__dict__:
# do not use hasattr; since it may result in infinite recursion
raise AttributeError(
"{}: could not set non-existing attribute {}".format(self, k)
)
cvt = getattr(type(self), "_convert_{}".format(k), None)
if cvt is not None:
v = cvt(v)
super().__setattr__(k, v)
[docs] def clone(self):
return copy.deepcopy(self)
[docs]class OrderedSet(object):
def __init__(self, initial_list=None):
if initial_list is not None:
self._dict = collections.OrderedDict([(v, True) for v in initial_list])
else:
self._dict = collections.OrderedDict()
[docs] def append(self, value):
self._dict[value] = True
[docs] def remove(self, value):
del self._dict[value]
def __contains__(self, value):
return value in self._dict
def __iter__(self):
return self._dict.keys()
[docs] def as_list(self):
return list(self._dict.keys())
