blob: 27b3a372d9f3956c4527e8d40d2e459d65e41947 [file] [log] [blame]
# Copyright 2010 the Melange authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Module containing data providers for BooleanProperty."""
import random
from soc.modules.seeder.logic.providers.provider import FixedValueProvider
from soc.modules.seeder.logic.providers.provider import BaseDataProvider
from soc.modules.seeder.logic.providers.provider import ParameterValueError
from soc.modules.seeder.logic.providers.provider import DataProviderParameter
class BooleanProvider(BaseDataProvider):
"""Base class for all data providers that return a boolean."""
class FixedBooleanProvider(BooleanProvider, FixedValueProvider):
"""Data provider that returns a fixed integer."""
def checkParameters(self):
super(FixedBooleanProvider, self).checkParameters()
value = self.param_values.get('value', None)
try:
bool(value)
except (TypeError, ValueError):
raise ParameterValueError('%s is not a valid boolean' % value)
class RandomBooleanProvider(BooleanProvider):
"""Data provider that returns a random boolean value."""
DEFAULT_CHANCE = 0.5
@classmethod
def getParametersList(cls):
parameters = super(RandomBooleanProvider, cls).getParametersList()[:]
parameters += [
DataProviderParameter('chance',
'Chance for True',
'Chance (between 0 and 1) that True will be '
'returned.',
False)]
return parameters
def getValue(self):
chance = self.param_values.get('chance', self.DEFAULT_CHANCE)
return random.random() < chance