# coding=utf-8
#
# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis-python
#
# Most of this work is copyright (C) 2013-2017 David R. MacIver
# (david@drmaciver.com), but it contains contributions by others. See
# CONTRIBUTING.rst for a full list of people who may hold copyright, and
# consult the git log if you need to determine who owns an individual
# contribution.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at http://mozilla.org/MPL/2.0/.
#
# END HEADER

from __future__ import division, print_function, absolute_import

from hypothesis.types import Stream
from hypothesis.searchstrategy.strategies import SearchStrategy


class StreamStrategy(SearchStrategy):

    supports_find = False

    def __init__(self, source_strategy):
        super(StreamStrategy, self).__init__()
        self.source_strategy = source_strategy

    def __repr__(self):
        return u'StreamStrategy(%r)' % (self.source_strategy,)

    def do_draw(self, data):
        def gen():
            while True:
                yield data.draw(self.source_strategy)
        return Stream(gen())
