75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
|
# Eos - Verifiable elections
|
||
|
|
# Copyright © 2017 RunasSudo (Yingtong Li)
|
||
|
|
#
|
||
|
|
# This program is free software: you can redistribute it and/or modify
|
||
|
|
# it under the terms of the GNU Affero General Public License as published by
|
||
|
|
# the Free Software Foundation, either version 3 of the License, or
|
||
|
|
# (at your option) any later version.
|
||
|
|
#
|
||
|
|
# This program is distributed in the hope that it will be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
# GNU Affero General Public License for more details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU Affero General Public License
|
||
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
import mongoengine
|
||
|
|
|
||
|
|
class Field:
|
||
|
|
def __init__(self, *args, **kwargs):
|
||
|
|
if 'default' in kwargs:
|
||
|
|
self.required = False
|
||
|
|
self.default = kwargs['default']
|
||
|
|
else:
|
||
|
|
self.required = True
|
||
|
|
self.default = None
|
||
|
|
|
||
|
|
class PrimitiveField(Field):
|
||
|
|
def to_python(self):
|
||
|
|
return self.mongo_field(
|
||
|
|
required=self.required,
|
||
|
|
default=self.default
|
||
|
|
)
|
||
|
|
|
||
|
|
class StringField(PrimitiveField):
|
||
|
|
mongo_field = mongoengine.StringField
|
||
|
|
|
||
|
|
class EosObjectType(type):
|
||
|
|
def before_new(meta, name, bases, attrs):
|
||
|
|
# Process fields
|
||
|
|
fields = {}
|
||
|
|
for attr, val in attrs.items():
|
||
|
|
if isinstance(val, Field):
|
||
|
|
fields[attr] = val
|
||
|
|
attrs[attr] = val.to_python()
|
||
|
|
attrs['_fields'] = fields
|
||
|
|
|
||
|
|
return meta, name, bases, attrs
|
||
|
|
|
||
|
|
class TopLevelObjectType(mongoengine.base.TopLevelDocumentMetaclass, EosObjectType):
|
||
|
|
def __new__(meta, name, bases, attrs):
|
||
|
|
meta, name, bases, attrs = meta.before_new(meta, name, bases, attrs)
|
||
|
|
return super().__new__(meta, name, bases, attrs)
|
||
|
|
|
||
|
|
class EmbeddedObjectType(mongoengine.base.DocumentMetaclass, EosObjectType):
|
||
|
|
def __new__(meta, name, bases, attrs):
|
||
|
|
meta, name, bases, attrs = meta.before_new(meta, name, bases, attrs)
|
||
|
|
return super().__new__(meta, name, bases, attrs)
|
||
|
|
|
||
|
|
class EosObject():
|
||
|
|
pass
|
||
|
|
|
||
|
|
class DocumentObject(EosObject):
|
||
|
|
pass
|
||
|
|
|
||
|
|
class TopLevelObject(DocumentObject, mongoengine.Document, metaclass=TopLevelObjectType):
|
||
|
|
meta = {
|
||
|
|
'abstract': True
|
||
|
|
}
|
||
|
|
|
||
|
|
class EmbeddedObject(DocumentObject, mongoengine.EmbeddedDocument, metaclass=EmbeddedObjectType):
|
||
|
|
meta = {
|
||
|
|
'abstract': True
|
||
|
|
}
|