Package Gnumed :: Package timelinelib :: Package general :: Module methodcontainer
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Source Code for Module Gnumed.timelinelib.general.methodcontainer

 1  # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018  Rickard Lindberg, Roger Lindberg 
 2  # 
 3  # This file is part of Timeline. 
 4  # 
 5  # Timeline is free software: you can redistribute it and/or modify 
 6  # it under the terms of the GNU General Public License as published by 
 7  # the Free Software Foundation, either version 3 of the License, or 
 8  # (at your option) any later version. 
 9  # 
10  # Timeline is distributed in the hope that it will be useful, 
11  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
12  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
13  # GNU General Public License for more details. 
14  # 
15  # You should have received a copy of the GNU General Public License 
16  # along with Timeline.  If not, see <http://www.gnu.org/licenses/>. 
17   
18   
19  from collections import defaultdict 
20   
21   
22 -class MethodContainer(object):
23
24 - def __init__(self, methods_kvp, default_method=None):
25 self._default_method = default_method 26 if self._all_keys_are_booleans(methods_kvp): 27 if self._first_truthy_method(methods_kvp): 28 self._container = defaultdict(self._default, [(True, self._first_truthy_method(methods_kvp))]) 29 else: 30 self._container = defaultdict(self._default, []) 31 else: 32 self._container = defaultdict(self._default, methods_kvp)
33
34 - def select(self, key):
35 return self._container[key]
36
37 - def _all_keys_are_booleans(self, methods_kvp):
38 return len([m for k, m in methods_kvp if not isinstance(k, bool)]) == 0
39
40 - def _first_truthy_method(self, methods_kvp):
41 for key, method in methods_kvp: 42 if key: 43 return method
44
45 - def _default(self):
46 if self._default_method is None: 47 return self._noop 48 else: 49 return self._default_method
50
51 - def _noop(self, *args, **kwargs):
52 pass
53